Merge pull request #11739 from neikeq/tengo-el-mono

Moved mono module here

25 files changed, 5421 insertions, 0 deletions

diff --git a/modules/mono/editor/GodotSharpTools/Build/BuildSystem.cs b/modules/mono/editor/GodotSharpTools/Build/BuildSystem.cs
new file mode 100644
index 0000000000..256e64ddde
--- /dev/null
+++ b/modules/mono/editor/GodotSharpTools/Build/BuildSystem.cs
@@ -0,0 +1,335 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.Specialized;
+using System.Diagnostics;
+using System.IO;
+using System.Runtime.CompilerServices;
+using System.Security;
+using Microsoft.Build.Framework;
+
+namespace GodotSharpTools.Build
+{
+    public class BuildInstance : IDisposable
+    {
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_BuildInstance_ExitCallback(string solution, string config, int exitCode);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static string godot_icall_BuildInstance_get_MSBuildPath();
+
+        private static string MSBuildPath
+        {
+            get { return godot_icall_BuildInstance_get_MSBuildPath(); }
+        }
+
+        private string solution;
+        private string config;
+
+        private Process process;
+
+        private int exitCode;
+        public int ExitCode { get { return exitCode; } }
+
+        public bool IsRunning { get { return process != null && !process.HasExited; } }
+
+        public BuildInstance(string solution, string config)
+        {
+            this.solution = solution;
+            this.config = config;
+        }
+
+        public bool Build(string loggerAssemblyPath, string loggerOutputDir, string[] customProperties = null)
+        {
+            string compilerArgs = BuildArguments(loggerAssemblyPath, loggerOutputDir, customProperties);
+
+            ProcessStartInfo startInfo = new ProcessStartInfo(MSBuildPath, compilerArgs);
+
+            // No console output, thanks
+            startInfo.RedirectStandardOutput = true;
+            startInfo.RedirectStandardError = true;
+            startInfo.UseShellExecute = false;
+
+            // Needed when running from Developer Command Prompt for VS
+            RemovePlatformVariable(startInfo.EnvironmentVariables);
+
+            using (Process process = new Process())
+            {
+                process.StartInfo = startInfo;
+
+                process.Start();
+
+                process.BeginOutputReadLine();
+                process.BeginErrorReadLine();
+
+                process.WaitForExit();
+
+                exitCode = process.ExitCode;
+            }
+
+            return true;
+        }
+
+        public bool BuildAsync(string loggerAssemblyPath, string loggerOutputDir, string[] customProperties = null)
+        {
+            if (process != null)
+                throw new InvalidOperationException("Already in use");
+
+            string compilerArgs = BuildArguments(loggerAssemblyPath, loggerOutputDir, customProperties);
+
+            ProcessStartInfo startInfo = new ProcessStartInfo("msbuild", compilerArgs);
+
+            // No console output, thanks
+            startInfo.RedirectStandardOutput = true;
+            startInfo.RedirectStandardError = true;
+            startInfo.UseShellExecute = false;
+
+            // Needed when running from Developer Command Prompt for VS
+            RemovePlatformVariable(startInfo.EnvironmentVariables);
+
+            process = new Process();
+            process.StartInfo = startInfo;
+            process.EnableRaisingEvents = true;
+            process.Exited += new EventHandler(BuildProcess_Exited);
+
+            process.Start();
+
+            return true;
+        }
+
+        private string BuildArguments(string loggerAssemblyPath, string loggerOutputDir, string[] customProperties)
+        {
+            string arguments = string.Format("{0} /v:normal /t:Build /p:{1} /l:{2},{3};{4}",
+                solution,
+                "Configuration=" + config,
+                typeof(GodotBuildLogger).FullName,
+                loggerAssemblyPath,
+                loggerOutputDir
+            );
+
+            if (customProperties != null)
+            {
+                foreach (string customProperty in customProperties)
+                {
+                    arguments += " /p:" + customProperty;
+                }
+            }
+
+            return arguments;
+        }
+
+        private void RemovePlatformVariable(StringDictionary environmentVariables)
+        {
+            // EnvironmentVariables is case sensitive? Seriously?
+
+            List<string> platformEnvironmentVariables = new List<string>();
+
+            foreach (string env in environmentVariables.Keys)
+            {
+                if (env.ToUpper() == "PLATFORM")
+                    platformEnvironmentVariables.Add(env);
+            }
+
+            foreach (string env in platformEnvironmentVariables)
+                environmentVariables.Remove(env);
+        }
+
+        private void BuildProcess_Exited(object sender, System.EventArgs e)
+        {
+            exitCode = process.ExitCode;
+
+            godot_icall_BuildInstance_ExitCallback(solution, config, exitCode);
+
+            Dispose();
+        }
+
+        public void Dispose()
+        {
+            if (process != null)
+            {
+                process.Dispose();
+                process = null;
+            }
+        }
+    }
+
+    public class GodotBuildLogger : ILogger
+    {
+        public string Parameters { get; set; }
+        public LoggerVerbosity Verbosity { get; set; }
+
+        public void Initialize(IEventSource eventSource)
+        {
+            if (null == Parameters)
+                throw new LoggerException("Log directory was not set.");
+
+            string[] parameters = Parameters.Split(';');
+
+            string logDir = parameters[0];
+
+            if (String.IsNullOrEmpty(logDir))
+                throw new LoggerException("Log directory was not set.");
+
+            if (parameters.Length > 1)
+                throw new LoggerException("Too many parameters passed.");
+
+            string logFile = Path.Combine(logDir, "msbuild_log.txt");
+            string issuesFile = Path.Combine(logDir, "msbuild_issues.csv");
+
+            try
+            {
+                if (!Directory.Exists(logDir))
+                    Directory.CreateDirectory(logDir);
+
+                this.logStreamWriter = new StreamWriter(logFile);
+                this.issuesStreamWriter = new StreamWriter(issuesFile);
+            }
+            catch (Exception ex)
+            {
+                if
+                (
+                    ex is UnauthorizedAccessException
+                    || ex is ArgumentNullException
+                    || ex is PathTooLongException
+                    || ex is DirectoryNotFoundException
+                    || ex is NotSupportedException
+                    || ex is ArgumentException
+                    || ex is SecurityException
+                    || ex is IOException
+                )
+                {
+                    throw new LoggerException("Failed to create log file: " + ex.Message);
+                }
+                else
+                {
+                    // Unexpected failure
+                    throw;
+                }
+            }
+
+            eventSource.ProjectStarted += new ProjectStartedEventHandler(eventSource_ProjectStarted);
+            eventSource.TaskStarted += new TaskStartedEventHandler(eventSource_TaskStarted);
+            eventSource.MessageRaised += new BuildMessageEventHandler(eventSource_MessageRaised);
+            eventSource.WarningRaised += new BuildWarningEventHandler(eventSource_WarningRaised);
+            eventSource.ErrorRaised += new BuildErrorEventHandler(eventSource_ErrorRaised);
+            eventSource.ProjectFinished += new ProjectFinishedEventHandler(eventSource_ProjectFinished);
+        }
+
+        void eventSource_ErrorRaised(object sender, BuildErrorEventArgs e)
+        {
+            string line = String.Format("{0}({1},{2}): error {3}: {4}", e.File, e.LineNumber, e.ColumnNumber, e.Code, e.Message);
+
+            if (e.ProjectFile.Length > 0)
+                line += string.Format(" [{0}]", e.ProjectFile);
+
+            WriteLine(line);
+
+            string errorLine = String.Format(@"error,{0},{1},{2},{3},{4},{5}",
+                                    e.File.CsvEscape(), e.LineNumber, e.ColumnNumber,
+                                    e.Code.CsvEscape(), e.Message.CsvEscape(), e.ProjectFile.CsvEscape());
+            issuesStreamWriter.WriteLine(errorLine);
+        }
+
+        void eventSource_WarningRaised(object sender, BuildWarningEventArgs e)
+        {
+            string line = String.Format("{0}({1},{2}): warning {3}: {4}", e.File, e.LineNumber, e.ColumnNumber, e.Code, e.Message, e.ProjectFile);
+
+            if (e.ProjectFile != null && e.ProjectFile.Length > 0)
+                line += string.Format(" [{0}]", e.ProjectFile);
+
+            WriteLine(line);
+
+            string warningLine = String.Format(@"warning,{0},{1},{2},{3},{4},{5}",
+                                    e.File.CsvEscape(), e.LineNumber, e.ColumnNumber,
+                                    e.Code.CsvEscape(), e.Message.CsvEscape(), e.ProjectFile != null ? e.ProjectFile.CsvEscape() : string.Empty);
+            issuesStreamWriter.WriteLine(warningLine);
+        }
+
+        void eventSource_MessageRaised(object sender, BuildMessageEventArgs e)
+        {
+            // BuildMessageEventArgs adds Importance to BuildEventArgs
+            // Let's take account of the verbosity setting we've been passed in deciding whether to log the message
+            if ((e.Importance == MessageImportance.High && IsVerbosityAtLeast(LoggerVerbosity.Minimal))
+                || (e.Importance == MessageImportance.Normal && IsVerbosityAtLeast(LoggerVerbosity.Normal))
+                || (e.Importance == MessageImportance.Low && IsVerbosityAtLeast(LoggerVerbosity.Detailed))
+                )
+            {
+                WriteLineWithSenderAndMessage(String.Empty, e);
+            }
+        }
+
+        void eventSource_TaskStarted(object sender, TaskStartedEventArgs e)
+        {
+            // TaskStartedEventArgs adds ProjectFile, TaskFile, TaskName
+            // To keep this log clean, this logger will ignore these events.
+        }
+
+        void eventSource_ProjectStarted(object sender, ProjectStartedEventArgs e)
+        {
+            WriteLine(e.Message);
+            indent++;
+        }
+
+        void eventSource_ProjectFinished(object sender, ProjectFinishedEventArgs e)
+        {
+            indent--;
+            WriteLine(e.Message);
+        }
+
+        /// <summary>
+        /// Write a line to the log, adding the SenderName
+        /// </summary>
+        private void WriteLineWithSender(string line, BuildEventArgs e)
+        {
+            if (0 == String.Compare(e.SenderName, "MSBuild", true /*ignore case*/))
+            {
+                // Well, if the sender name is MSBuild, let's leave it out for prettiness
+                WriteLine(line);
+            }
+            else
+            {
+                WriteLine(e.SenderName + ": " + line);
+            }
+        }
+
+        /// <summary>
+        /// Write a line to the log, adding the SenderName and Message
+        /// (these parameters are on all MSBuild event argument objects)
+        /// </summary>
+        private void WriteLineWithSenderAndMessage(string line, BuildEventArgs e)
+        {
+            if (0 == String.Compare(e.SenderName, "MSBuild", true /*ignore case*/))
+            {
+                // Well, if the sender name is MSBuild, let's leave it out for prettiness
+                WriteLine(line + e.Message);
+            }
+            else
+            {
+                WriteLine(e.SenderName + ": " + line + e.Message);
+            }
+        }
+
+        private void WriteLine(string line)
+        {
+            for (int i = indent; i > 0; i--)
+            {
+                logStreamWriter.Write("\t");
+            }
+            logStreamWriter.WriteLine(line);
+        }
+
+        public void Shutdown()
+        {
+            logStreamWriter.Close();
+            issuesStreamWriter.Close();
+        }
+
+        public bool IsVerbosityAtLeast(LoggerVerbosity checkVerbosity)
+        {
+            return this.Verbosity >= checkVerbosity;
+        }
+
+        private StreamWriter logStreamWriter;
+        private StreamWriter issuesStreamWriter;
+        private int indent;
+    }
+}
diff --git a/modules/mono/editor/GodotSharpTools/Editor/MonoDevelopInstance.cs b/modules/mono/editor/GodotSharpTools/Editor/MonoDevelopInstance.cs
new file mode 100644
index 0000000000..303be3b732
--- /dev/null
+++ b/modules/mono/editor/GodotSharpTools/Editor/MonoDevelopInstance.cs
@@ -0,0 +1,58 @@
+using System;
+using System.IO;
+using System.Collections.Generic;
+using System.Diagnostics;
+
+namespace GodotSharpTools.Editor
+{
+    public class MonoDevelopInstance
+    {
+        private Process process;
+        private string solutionFile;
+
+        public void Execute(string[] files)
+        {
+            bool newWindow = process == null || process.HasExited;
+
+            List<string> args = new List<string>();
+
+            args.Add("--ipc-tcp");
+
+            if (newWindow)
+                args.Add("\"" + Path.GetFullPath(solutionFile) + "\"");
+
+            foreach (var file in files)
+            {
+                int semicolonIndex = file.IndexOf(';');
+
+                string filePath = semicolonIndex < 0 ? file : file.Substring(0, semicolonIndex);
+                string cursor = semicolonIndex < 0 ? string.Empty : file.Substring(semicolonIndex);
+
+                args.Add("\"" + Path.GetFullPath(filePath.NormalizePath()) + cursor + "\"");
+            }
+
+            if (newWindow)
+            {
+                ProcessStartInfo startInfo = new ProcessStartInfo(MonoDevelopFile, string.Join(" ", args));
+                process = Process.Start(startInfo);
+            }
+            else
+            {
+                Process.Start(MonoDevelopFile, string.Join(" ", args));
+            }
+        }
+
+        public MonoDevelopInstance(string solutionFile)
+        {
+            this.solutionFile = solutionFile;
+        }
+
+        private static string MonoDevelopFile
+        {
+            get
+            {
+                return "monodevelop";
+            }
+        }
+    }
+}
diff --git a/modules/mono/editor/GodotSharpTools/GodotSharpTools.csproj b/modules/mono/editor/GodotSharpTools/GodotSharpTools.csproj
new file mode 100644
index 0000000000..981083a3c2
--- /dev/null
+++ b/modules/mono/editor/GodotSharpTools/GodotSharpTools.csproj
@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{A8CDAD94-C6D4-4B19-A7E7-76C53CC92984}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <RootNamespace>GodotSharpTools</RootNamespace>
+    <AssemblyName>GodotSharpTools</AssemblyName>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug</OutputPath>
+    <DefineConstants>DEBUG;</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <ConsolePause>false</ConsolePause>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>full</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release</OutputPath>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <ConsolePause>false</ConsolePause>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="Microsoft.Build" />
+    <Reference Include="Microsoft.Build.Framework" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="StringExtensions.cs" />
+    <Compile Include="Build\BuildSystem.cs" />
+    <Compile Include="Editor\MonoDevelopInstance.cs" />
+    <Compile Include="Project\ProjectExtensions.cs" />
+    <Compile Include="Project\ProjectGenerator.cs" />
+    <Compile Include="Project\ProjectUtils.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
+</Project>
\ No newline at end of file
diff --git a/modules/mono/editor/GodotSharpTools/GodotSharpTools.sln b/modules/mono/editor/GodotSharpTools/GodotSharpTools.sln
new file mode 100644
index 0000000000..7eabcdff5d
--- /dev/null
+++ b/modules/mono/editor/GodotSharpTools/GodotSharpTools.sln
@@ -0,0 +1,17 @@
+

+Microsoft Visual Studio Solution File, Format Version 12.00

+# Visual Studio 2012

+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "GodotSharpTools", "GodotSharpTools.csproj", "{A8CDAD94-C6D4-4B19-A7E7-76C53CC92984}"

+EndProject

+Global

+	GlobalSection(SolutionConfigurationPlatforms) = preSolution

+		Debug|Any CPU = Debug|Any CPU

+		Release|Any CPU = Release|Any CPU

+	EndGlobalSection

+	GlobalSection(ProjectConfigurationPlatforms) = postSolution

+		{A8CDAD94-C6D4-4B19-A7E7-76C53CC92984}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{A8CDAD94-C6D4-4B19-A7E7-76C53CC92984}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{A8CDAD94-C6D4-4B19-A7E7-76C53CC92984}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{A8CDAD94-C6D4-4B19-A7E7-76C53CC92984}.Release|Any CPU.Build.0 = Release|Any CPU

+	EndGlobalSection

+EndGlobal

diff --git a/modules/mono/editor/GodotSharpTools/GodotSharpTools.userprefs b/modules/mono/editor/GodotSharpTools/GodotSharpTools.userprefs
new file mode 100644
index 0000000000..0cbafdc20d
--- /dev/null
+++ b/modules/mono/editor/GodotSharpTools/GodotSharpTools.userprefs
@@ -0,0 +1,14 @@
+<Properties StartupItem="GodotSharpTools.csproj">
+  <MonoDevelop.Ide.Workspace ActiveConfiguration="Debug" />
+  <MonoDevelop.Ide.Workbench ActiveDocument="Build/BuildSystem.cs">
+    <Files>
+      <File FileName="Build/ProjectExtensions.cs" Line="1" Column="1" />
+      <File FileName="Build/ProjectGenerator.cs" Line="1" Column="1" />
+      <File FileName="Build/BuildSystem.cs" Line="37" Column="14" />
+    </Files>
+  </MonoDevelop.Ide.Workbench>
+  <MonoDevelop.Ide.DebuggingService.Breakpoints>
+    <BreakpointStore />
+  </MonoDevelop.Ide.DebuggingService.Breakpoints>
+  <MonoDevelop.Ide.DebuggingService.PinnedWatches />
+</Properties>
\ No newline at end of file
diff --git a/modules/mono/editor/GodotSharpTools/Project/ProjectExtensions.cs b/modules/mono/editor/GodotSharpTools/Project/ProjectExtensions.cs
new file mode 100644
index 0000000000..6a97731539
--- /dev/null
+++ b/modules/mono/editor/GodotSharpTools/Project/ProjectExtensions.cs
@@ -0,0 +1,49 @@
+using System;
+using Microsoft.Build.Construction;
+
+namespace GodotSharpTools.Project
+{
+    public static class ProjectExtensions
+    {
+        public static bool HasItem(this ProjectRootElement root, string itemType, string include)
+        {
+            string includeNormalized = include.NormalizePath();
+
+            foreach (var itemGroup in root.ItemGroups)
+            {
+                if (itemGroup.Condition.Length != 0)
+                    continue;
+
+                foreach (var item in itemGroup.Items)
+                {
+                    if (item.ItemType == itemType)
+                    {
+                        if (item.Include.NormalizePath() == includeNormalized)
+                            return true;
+                    }
+                }
+            }
+
+            return false;
+        }
+
+        public static void AddItemChecked(this ProjectRootElement root, string itemType, string include)
+        {
+            if (!root.HasItem(itemType, include))
+            {
+                root.AddItem(itemType, include);
+            }
+        }
+
+        public static Guid GetGuid(this ProjectRootElement root)
+        {
+            foreach (var property in root.Properties)
+            {
+                if (property.Name == "ProjectGuid")
+                    return Guid.Parse(property.Value);
+            }
+
+            return Guid.Empty;
+        }
+    }
+}
diff --git a/modules/mono/editor/GodotSharpTools/Project/ProjectGenerator.cs b/modules/mono/editor/GodotSharpTools/Project/ProjectGenerator.cs
new file mode 100644
index 0000000000..6bf54a0156
--- /dev/null
+++ b/modules/mono/editor/GodotSharpTools/Project/ProjectGenerator.cs
@@ -0,0 +1,216 @@
+using System;
+using System.IO;
+using Microsoft.Build.Construction;
+
+namespace GodotSharpTools.Project
+{
+    public static class ProjectGenerator
+    {
+        public static string GenCoreApiProject(string dir, string[] compileItems)
+        {
+            string path = Path.Combine(dir, CoreApiProject + ".csproj");
+
+            ProjectPropertyGroupElement mainGroup;
+            var root = CreateLibraryProject(CoreApiProject, out mainGroup);
+
+            mainGroup.AddProperty("DocumentationFile", Path.Combine("$(OutputPath)", "$(AssemblyName).xml"));
+            mainGroup.SetProperty("RootNamespace", "Godot");
+
+            GenAssemblyInfoFile(root, dir, CoreApiProject,
+                                new string[] { "[assembly: InternalsVisibleTo(\"" + EditorApiProject + "\")]" },
+                                new string[] { "System.Runtime.CompilerServices" });
+
+            foreach (var item in compileItems)
+            {
+                root.AddItem("Compile", item.RelativeToPath(dir).Replace("/", "\\"));
+            }
+
+            root.Save(path);
+
+            return root.GetGuid().ToString().ToUpper();
+        }
+
+        public static string GenEditorApiProject(string dir, string coreApiHintPath, string[] compileItems)
+        {
+            string path = Path.Combine(dir, EditorApiProject + ".csproj");
+
+            ProjectPropertyGroupElement mainGroup;
+            var root = CreateLibraryProject(EditorApiProject, out mainGroup);
+
+            mainGroup.AddProperty("DocumentationFile", Path.Combine("$(OutputPath)", "$(AssemblyName).xml"));
+            mainGroup.SetProperty("RootNamespace", "Godot");
+
+            GenAssemblyInfoFile(root, dir, EditorApiProject);
+
+            foreach (var item in compileItems)
+            {
+                root.AddItem("Compile", item.RelativeToPath(dir).Replace("/", "\\"));
+            }
+
+            var coreApiRef = root.AddItem("Reference", CoreApiProject);
+            coreApiRef.AddMetadata("HintPath", coreApiHintPath);
+            coreApiRef.AddMetadata("Private", "False");
+
+            root.Save(path);
+
+            return root.GetGuid().ToString().ToUpper();
+        }
+
+        public static string GenGameProject(string dir, string name, string[] compileItems)
+        {
+            string path = Path.Combine(dir, name + ".csproj");
+
+            ProjectPropertyGroupElement mainGroup;
+            var root = CreateLibraryProject(name, out mainGroup);
+
+            mainGroup.SetProperty("OutputPath", Path.Combine(".mono", "temp", "bin", "$(Configuration)"));
+            mainGroup.SetProperty("BaseIntermediateOutputPath", Path.Combine(".mono", "temp", "obj"));
+            mainGroup.SetProperty("IntermediateOutputPath", Path.Combine("$(BaseIntermediateOutputPath)", "$(Configuration)"));
+
+            var toolsGroup = root.AddPropertyGroup();
+            toolsGroup.Condition = " '$(Configuration)|$(Platform)' == 'Tools|AnyCPU' ";
+            toolsGroup.AddProperty("DebugSymbols", "true");
+            toolsGroup.AddProperty("DebugType", "full");
+            toolsGroup.AddProperty("Optimize", "false");
+            toolsGroup.AddProperty("DefineConstants", "DEBUG;TOOLS;");
+            toolsGroup.AddProperty("ErrorReport", "prompt");
+            toolsGroup.AddProperty("WarningLevel", "4");
+            toolsGroup.AddProperty("ConsolePause", "false");
+
+            var coreApiRef = root.AddItem("Reference", CoreApiProject);
+            coreApiRef.AddMetadata("HintPath", Path.Combine("$(ProjectDir)", ".mono", "assemblies", CoreApiProject + ".dll"));
+            coreApiRef.AddMetadata("Private", "False");
+
+            var editorApiRef = root.AddItem("Reference", EditorApiProject);
+            editorApiRef.Condition = " '$(Configuration)' == 'Tools' ";
+            editorApiRef.AddMetadata("HintPath", Path.Combine("$(ProjectDir)", ".mono", "assemblies", EditorApiProject + ".dll"));
+            editorApiRef.AddMetadata("Private", "False");
+
+            GenAssemblyInfoFile(root, dir, name);
+
+            foreach (var item in compileItems)
+            {
+                root.AddItem("Compile", item.RelativeToPath(dir).Replace("/", "\\"));
+            }
+
+            root.Save(path);
+
+            return root.GetGuid().ToString().ToUpper();
+        }
+
+        public static void GenAssemblyInfoFile(ProjectRootElement root, string dir, string name, string[] assemblyLines = null, string[] usingDirectives = null)
+        {
+
+            string propertiesDir = Path.Combine(dir, "Properties");
+            if (!Directory.Exists(propertiesDir))
+                Directory.CreateDirectory(propertiesDir);
+
+            string usingDirectivesText = string.Empty;
+
+            if (usingDirectives != null)
+            {
+                foreach (var usingDirective in usingDirectives)
+                    usingDirectivesText += "\nusing " + usingDirective + ";";
+            }
+
+            string assemblyLinesText = string.Empty;
+
+            if (assemblyLines != null)
+            {
+                foreach (var assemblyLine in assemblyLines)
+                    assemblyLinesText += string.Join("\n", assemblyLines) + "\n";
+            }
+
+            string content = string.Format(assemblyInfoTemplate, usingDirectivesText, name, assemblyLinesText);
+
+            string assemblyInfoFile = Path.Combine(propertiesDir, "AssemblyInfo.cs");
+
+            File.WriteAllText(assemblyInfoFile, content);
+
+            root.AddItem("Compile", assemblyInfoFile.RelativeToPath(dir).Replace("/", "\\"));
+        }
+
+        public static ProjectRootElement CreateLibraryProject(string name, out ProjectPropertyGroupElement mainGroup)
+        {
+            var root = ProjectRootElement.Create();
+            root.DefaultTargets = "Build";
+
+            mainGroup = root.AddPropertyGroup();
+            mainGroup.AddProperty("Configuration", "Debug").Condition = " '$(Configuration)' == '' ";
+            mainGroup.AddProperty("Platform", "AnyCPU").Condition = " '$(Platform)' == '' ";
+            mainGroup.AddProperty("ProjectGuid", "{" + Guid.NewGuid().ToString().ToUpper() + "}");
+            mainGroup.AddProperty("OutputType", "Library");
+            mainGroup.AddProperty("OutputPath", Path.Combine("bin", "$(Configuration)"));
+            mainGroup.AddProperty("RootNamespace", name);
+            mainGroup.AddProperty("AssemblyName", name);
+            mainGroup.AddProperty("TargetFrameworkVersion", "v4.5");
+
+            var debugGroup = root.AddPropertyGroup();
+            debugGroup.Condition = " '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ";
+            debugGroup.AddProperty("DebugSymbols", "true");
+            debugGroup.AddProperty("DebugType", "full");
+            debugGroup.AddProperty("Optimize", "false");
+            debugGroup.AddProperty("DefineConstants", "DEBUG;");
+            debugGroup.AddProperty("ErrorReport", "prompt");
+            debugGroup.AddProperty("WarningLevel", "4");
+            debugGroup.AddProperty("ConsolePause", "false");
+
+            var releaseGroup = root.AddPropertyGroup();
+            releaseGroup.Condition = " '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ";
+            releaseGroup.AddProperty("DebugType", "full");
+            releaseGroup.AddProperty("Optimize", "true");
+            releaseGroup.AddProperty("ErrorReport", "prompt");
+            releaseGroup.AddProperty("WarningLevel", "4");
+            releaseGroup.AddProperty("ConsolePause", "false");
+
+            // References
+            var referenceGroup = root.AddItemGroup();
+            referenceGroup.AddItem("Reference", "System");
+
+            root.AddImport(Path.Combine("$(MSBuildBinPath)", "Microsoft.CSharp.targets").Replace("/", "\\"));
+
+            return root;
+        }
+
+        private static void AddItems(ProjectRootElement elem, string groupName, params string[] items)
+        {
+            var group = elem.AddItemGroup();
+
+            foreach (var item in items)
+            {
+                group.AddItem(groupName, item);
+            }
+        }
+
+        public const string CoreApiProject = "GodotSharp";
+        public const string EditorApiProject = "GodotSharpEditor";
+
+        private const string assemblyInfoTemplate =
+@"using System.Reflection;{0}
+
+// Information about this assembly is defined by the following attributes.
+// Change them to the values specific to your project.
+
+[assembly: AssemblyTitle(""{1}"")]
+[assembly: AssemblyDescription("""")]
+[assembly: AssemblyConfiguration("""")]
+[assembly: AssemblyCompany("""")]
+[assembly: AssemblyProduct("""")]
+[assembly: AssemblyCopyright("""")]
+[assembly: AssemblyTrademark("""")]
+[assembly: AssemblyCulture("""")]
+
+// The assembly version has the format ""{{Major}}.{{Minor}}.{{Build}}.{{Revision}}"".
+// The form ""{{Major}}.{{Minor}}.*"" will automatically update the build and revision,
+// and ""{{Major}}.{{Minor}}.{{Build}}.*"" will update just the revision.
+
+[assembly: AssemblyVersion(""1.0.*"")]
+
+// The following attributes are used to specify the signing key for the assembly,
+// if desired. See the Mono documentation for more information about signing.
+
+//[assembly: AssemblyDelaySign(false)]
+//[assembly: AssemblyKeyFile("""")]
+{2}";
+    }
+}
diff --git a/modules/mono/editor/GodotSharpTools/Project/ProjectUtils.cs b/modules/mono/editor/GodotSharpTools/Project/ProjectUtils.cs
new file mode 100644
index 0000000000..a50b4fb064
--- /dev/null
+++ b/modules/mono/editor/GodotSharpTools/Project/ProjectUtils.cs
@@ -0,0 +1,17 @@
+using System;
+using System.IO;
+using Microsoft.Build.Construction;
+
+namespace GodotSharpTools.Project
+{
+    public static class ProjectUtils
+    {
+        public static void AddItemToProjectChecked(string projectPath, string itemType, string include)
+        {
+            var dir = Directory.GetParent(projectPath).FullName;
+            var root = ProjectRootElement.Open(projectPath);
+            root.AddItemChecked(itemType, include.RelativeToPath(dir).Replace("/", "\\"));
+            root.Save();
+        }
+    }
+}
diff --git a/modules/mono/editor/GodotSharpTools/Properties/AssemblyInfo.cs b/modules/mono/editor/GodotSharpTools/Properties/AssemblyInfo.cs
new file mode 100644
index 0000000000..7115d8fc71
--- /dev/null
+++ b/modules/mono/editor/GodotSharpTools/Properties/AssemblyInfo.cs
@@ -0,0 +1,27 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+
+// Information about this assembly is defined by the following attributes.
+// Change them to the values specific to your project.
+
+[assembly: AssemblyTitle("GodotSharpTools")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("")]
+[assembly: AssemblyCopyright("ignacio")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// The assembly version has the format "{Major}.{Minor}.{Build}.{Revision}".
+// The form "{Major}.{Minor}.*" will automatically update the build and revision,
+// and "{Major}.{Minor}.{Build}.*" will update just the revision.
+
+[assembly: AssemblyVersion("1.0.*")]
+
+// The following attributes are used to specify the signing key for the assembly,
+// if desired. See the Mono documentation for more information about signing.
+
+//[assembly: AssemblyDelaySign(false)]
+//[assembly: AssemblyKeyFile("")]
+
diff --git a/modules/mono/editor/GodotSharpTools/StringExtensions.cs b/modules/mono/editor/GodotSharpTools/StringExtensions.cs
new file mode 100644
index 0000000000..b66c86f8ce
--- /dev/null
+++ b/modules/mono/editor/GodotSharpTools/StringExtensions.cs
@@ -0,0 +1,52 @@
+using System;
+using System.IO;
+
+namespace GodotSharpTools
+{
+    public static class StringExtensions
+    {
+        public static string RelativeToPath(this string path, string dir)
+        {
+            // Make sure the directory ends with a path separator
+            dir = Path.Combine(dir, " ").TrimEnd();
+
+            if (Path.DirectorySeparatorChar == '\\')
+                dir = dir.Replace("/", "\\") + "\\";
+
+            Uri fullPath = new Uri(Path.GetFullPath(path), UriKind.Absolute);
+            Uri relRoot = new Uri(Path.GetFullPath(dir), UriKind.Absolute);
+
+            return relRoot.MakeRelativeUri(fullPath).ToString();
+        }
+
+        public static string NormalizePath(this string path)
+        {
+            bool rooted = path.IsAbsolutePath();
+
+            path = path.Replace('\\', '/');
+
+            string[] parts = path.Split(new[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
+
+            path = string.Join(Path.DirectorySeparatorChar.ToString(), parts).Trim();
+
+            return rooted ? Path.DirectorySeparatorChar.ToString() + path : path;
+        }
+
+        private static readonly string driveRoot = Path.GetPathRoot(Environment.CurrentDirectory);
+
+        public static bool IsAbsolutePath(this string path)
+        {
+            return path.StartsWith("/") || path.StartsWith("\\") || path.StartsWith(driveRoot);
+        }
+
+        public static string CsvEscape(this string value, char delimiter = ',')
+        {
+            bool hasSpecialChar = value.IndexOfAny(new char[] { '\"', '\n', '\r', delimiter }) != -1;
+
+            if (hasSpecialChar)
+                return "\"" + value.Replace("\"", "\"\"") + "\"";
+
+            return value;
+        }
+    }
+}
diff --git a/modules/mono/editor/bindings_generator.cpp b/modules/mono/editor/bindings_generator.cpp
new file mode 100644
index 0000000000..123f00ea10
--- /dev/null
+++ b/modules/mono/editor/bindings_generator.cpp
@@ -0,0 +1,2151 @@
+/*************************************************************************/
+/*  bindings_generator.cpp                                               */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#include "bindings_generator.h"
+
+#ifdef DEBUG_METHODS_ENABLED
+
+#include "global_constants.h"
+#include "io/compression.h"
+#include "os/dir_access.h"
+#include "os/file_access.h"
+#include "os/os.h"
+#include "project_settings.h"
+#include "ucaps.h"
+
+#include "../glue/cs_compressed.gen.h"
+#include "../godotsharp_defs.h"
+#include "../mono_gd/gd_mono_marshal.h"
+#include "../utils/path_utils.h"
+#include "../utils/string_utils.h"
+#include "csharp_project.h"
+#include "net_solution.h"
+
+#define CS_INDENT "    "
+
+#define INDENT1 CS_INDENT
+#define INDENT2 INDENT1 INDENT1
+#define INDENT3 INDENT2 INDENT1
+#define INDENT4 INDENT3 INDENT1
+#define INDENT5 INDENT4 INDENT1
+
+#define MEMBER_BEGIN "\n" INDENT2
+
+#define OPEN_BLOCK "{\n"
+#define CLOSE_BLOCK "}\n"
+
+#define OPEN_BLOCK_L2 INDENT2 OPEN_BLOCK INDENT3
+#define OPEN_BLOCK_L3 INDENT3 OPEN_BLOCK INDENT4
+#define OPEN_BLOCK_L4 INDENT4 OPEN_BLOCK INDENT5
+#define CLOSE_BLOCK_L2 INDENT2 CLOSE_BLOCK
+#define CLOSE_BLOCK_L3 INDENT3 CLOSE_BLOCK
+#define CLOSE_BLOCK_L4 INDENT4 CLOSE_BLOCK
+
+#define LOCAL_RET "ret"
+
+#define CS_CLASS_NATIVECALLS "NativeCalls"
+#define CS_CLASS_NATIVECALLS_EDITOR "EditorNativeCalls"
+#define CS_FIELD_MEMORYOWN "memoryOwn"
+#define CS_PARAM_METHODBIND "method"
+#define CS_PARAM_INSTANCE "ptr"
+#define CS_SMETHOD_GETINSTANCE "GetPtr"
+#define CS_FIELD_SINGLETON "instance"
+#define CS_PROP_SINGLETON "Instance"
+#define CS_CLASS_SIGNALAWAITER "SignalAwaiter"
+#define CS_METHOD_CALL "Call"
+
+#define GLUE_HEADER_FILE "glue_header.h"
+#define ICALL_PREFIX "godot_icall_"
+#define SINGLETON_ICALL_SUFFIX "_get_singleton"
+#define ICALL_GET_METHODBIND ICALL_PREFIX "ClassDB_get_method"
+#define ICALL_CONNECT_SIGNAL_AWAITER ICALL_PREFIX "Object_connect_signal_awaiter"
+#define ICALL_OBJECT_DTOR ICALL_PREFIX "Object_Dtor"
+#define C_LOCAL_PTRCALL_ARGS "call_args"
+#define C_MACRO_OBJECT_CONSTRUCT "GODOTSHARP_INSTANCE_OBJECT"
+
+#define C_NS_MONOUTILS "GDMonoUtils"
+#define C_NS_MONOINTERNALS "GDMonoInternals"
+#define C_METHOD_TIE_MANAGED_TO_UNMANAGED C_NS_MONOINTERNALS "::tie_managed_to_unmanaged"
+#define C_METHOD_UNMANAGED_GET_MANAGED C_NS_MONOUTILS "::unmanaged_get_managed"
+
+#define C_NS_MONOMARSHAL "GDMonoMarshal"
+#define C_METHOD_MANAGED_TO_VARIANT C_NS_MONOMARSHAL "::mono_object_to_variant"
+#define C_METHOD_MANAGED_FROM_VARIANT C_NS_MONOMARSHAL "::variant_to_mono_object"
+#define C_METHOD_MONOSTR_TO_GODOT C_NS_MONOMARSHAL "::mono_string_to_godot"
+#define C_METHOD_MONOSTR_FROM_GODOT C_NS_MONOMARSHAL "::mono_string_from_godot"
+#define C_METHOD_MONOARRAY_TO(m_type) C_NS_MONOMARSHAL "::mono_array_to_" #m_type
+#define C_METHOD_MONOARRAY_FROM(m_type) C_NS_MONOMARSHAL "::" #m_type "_to_mono_array"
+#define C_METHOD_MANAGED_TO_DICT C_NS_MONOMARSHAL "::mono_object_to_Dictionary"
+#define C_METHOD_MANAGED_FROM_DICT C_NS_MONOMARSHAL "::Dictionary_to_mono_object"
+
+const char *BindingsGenerator::TypeInterface::DEFAULT_VARARG_C_IN = "\t%0 %1_in = %1;\n";
+
+bool BindingsGenerator::verbose_output = false;
+
+static bool is_csharp_keyword(const String &p_name) {
+
+	// Reserved keywords
+
+	return p_name == "abstract" || p_name == "as" || p_name == "base" || p_name == "bool" ||
+		   p_name == "break" || p_name == "byte" || p_name == "case" || p_name == "catch" ||
+		   p_name == "char" || p_name == "checked" || p_name == "class" || p_name == "const" ||
+		   p_name == "continue" || p_name == "decimal" || p_name == "default" || p_name == "delegate" ||
+		   p_name == "do" || p_name == "double" || p_name == "else" || p_name == "enum" ||
+		   p_name == "event" || p_name == "explicit" || p_name == "extern" || p_name == "false" ||
+		   p_name == "finally" || p_name == "fixed" || p_name == "float" || p_name == "for" ||
+		   p_name == "forech" || p_name == "goto" || p_name == "if" || p_name == "implicit" ||
+		   p_name == "in" || p_name == "int" || p_name == "interface" || p_name == "internal" ||
+		   p_name == "is" || p_name == "lock" || p_name == "long" || p_name == "namespace" ||
+		   p_name == "new" || p_name == "null" || p_name == "object" || p_name == "operator" ||
+		   p_name == "out" || p_name == "override" || p_name == "params" || p_name == "private" ||
+		   p_name == "protected" || p_name == "public" || p_name == "readonly" || p_name == "ref" ||
+		   p_name == "return" || p_name == "sbyte" || p_name == "sealed" || p_name == "short" ||
+		   p_name == "sizeof" || p_name == "stackalloc" || p_name == "static" || p_name == "string" ||
+		   p_name == "struct" || p_name == "switch" || p_name == "this" || p_name == "throw" ||
+		   p_name == "true" || p_name == "try" || p_name == "typeof" || p_name == "uint" || p_name == "ulong" ||
+		   p_name == "unchecked" || p_name == "unsafe" || p_name == "ushort" || p_name == "using" ||
+		   p_name == "virtual" || p_name == "volatile" || p_name == "void" || p_name == "while";
+}
+
+static bool is_singleton_black_listed(const String &p_type) {
+
+	return p_type == "IP_Unix" || p_type == "InputDefault" || p_type == "AudioServerSW" || p_type == "PhysicsServerSW" ||
+		   p_type == "Physics2DServerSW" || p_type == "SpatialSoundServerSW" || p_type == "SpatialSound2DServerSW";
+}
+
+inline static String escape_csharp_keyword(const String &p_name) {
+
+	return is_csharp_keyword(p_name) ? "@" + p_name : p_name;
+}
+
+static String snake_to_pascal_case(const String &p_identifier) {
+
+	String ret;
+	Vector<String> parts = p_identifier.split("_", true);
+
+	for (int i = 0; i < parts.size(); i++) {
+		String part = parts[i];
+
+		if (part.length()) {
+			part[0] = _find_upper(part[0]);
+			ret += part;
+		} else {
+			if (i == 0 || i == (parts.size() - 1)) {
+				// Preserve underscores at the beginning and end
+				ret += "_";
+			} else {
+				// Preserve contiguous underscores
+				if (parts[i - 1].length()) {
+					ret += "__";
+				} else {
+					ret += "_";
+				}
+			}
+		}
+	}
+
+	return ret;
+}
+
+static String snake_to_camel_case(const String &p_identifier) {
+
+	String ret;
+	Vector<String> parts = p_identifier.split("_", true);
+
+	for (int i = 0; i < parts.size(); i++) {
+		String part = parts[i];
+
+		if (part.length()) {
+			if (i != 0)
+				part[0] = _find_upper(part[0]);
+			ret += part;
+		} else {
+			if (i == 0 || i == (parts.size() - 1)) {
+				// Preserve underscores at the beginning and end
+				ret += "_";
+			} else {
+				// Preserve contiguous underscores
+				if (parts[i - 1].length()) {
+					ret += "__";
+				} else {
+					ret += "_";
+				}
+			}
+		}
+	}
+
+	return ret;
+}
+
+void BindingsGenerator::_generate_header_icalls() {
+
+	core_custom_icalls.clear();
+
+	core_custom_icalls.push_back(InternalCall(ICALL_GET_METHODBIND, "IntPtr", "string type, string method"));
+	core_custom_icalls.push_back(InternalCall(ICALL_OBJECT_DTOR, "void", "IntPtr ptr"));
+
+	core_custom_icalls.push_back(InternalCall(ICALL_CONNECT_SIGNAL_AWAITER, "Error",
+			"IntPtr source, string signal, IntPtr target, " CS_CLASS_SIGNALAWAITER " awaiter"));
+
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "NodePath_Ctor", "IntPtr", "string path"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "NodePath_Dtor", "void", "IntPtr ptr"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "NodePath_operator_String", "string", "IntPtr ptr"));
+
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "RID_Ctor", "IntPtr", "IntPtr from"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "RID_Dtor", "void", "IntPtr ptr"));
+
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "String_md5_buffer", "byte[]", "string str"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "String_md5_text", "string", "string str"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "String_rfind", "int", "string str, string what, int from"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "String_rfindn", "int", "string str, string what, int from"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "String_sha256_buffer", "byte[]", "string str"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "String_sha256_text", "string", "string str"));
+
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_bytes2var", "object", "byte[] bytes"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_convert", "object", "object what, int type"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_hash", "int", "object var"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_instance_from_id", "Object", "int instance_id"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_print", "void", "object[] what"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_printerr", "void", "object[] what"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_printraw", "void", "object[] what"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_prints", "void", "object[] what"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_printt", "void", "object[] what"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_seed", "void", "int seed"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_str", "string", "object[] what"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_str2var", "object", "string str"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_type_exists", "bool", "string type"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_var2bytes", "byte[]", "object what"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_var2str", "string", "object var"));
+	core_custom_icalls.push_back(InternalCall(ICALL_PREFIX "Godot_weakref", "WeakRef", "IntPtr obj"));
+}
+
+void BindingsGenerator::_generate_method_icalls(const TypeInterface &p_itype) {
+
+	if (p_itype.base_name.length() && obj_types[p_itype.base_name].is_singleton && is_singleton_black_listed(p_itype.name))
+		return;
+
+	for (const List<MethodInterface>::Element *E = p_itype.methods.front(); E; E = E->next()) {
+		const MethodInterface &imethod = E->get();
+
+		if (imethod.is_virtual)
+			continue;
+
+		const TypeInterface *return_type = _get_type_by_name_or_placeholder(imethod.return_type);
+
+		String im_sig = "IntPtr " CS_PARAM_METHODBIND ", IntPtr " CS_PARAM_INSTANCE;
+		String im_unique_sig = imethod.return_type + ",IntPtr,IntPtr";
+
+		// Get arguments information
+		int i = 0;
+		for (const List<ArgumentInterface>::Element *F = imethod.arguments.front(); F; F = F->next()) {
+			const TypeInterface *arg_type = _get_type_by_name_or_placeholder(F->get().type);
+
+			im_sig += ", ";
+			im_sig += arg_type->im_type_in;
+			im_sig += " arg";
+			im_sig += itos(i + 1);
+
+			im_unique_sig += ",";
+			im_unique_sig += get_unique_sig(*arg_type);
+
+			i++;
+		}
+
+		// godot_icall_{argc}_{icallcount}
+		String icall_method = ICALL_PREFIX + itos(imethod.arguments.size()) + "_" + itos(method_icalls.size());
+
+		InternalCall im_icall = InternalCall(p_itype.api_type, icall_method, return_type->im_type_out, im_sig, im_unique_sig);
+
+		List<InternalCall>::Element *match = method_icalls.find(im_icall);
+
+		if (match) {
+			if (p_itype.api_type != ClassDB::API_EDITOR)
+				match->get().editor_only = false;
+			method_icalls_map.insert(&E->get(), &match->get());
+		} else {
+			List<InternalCall>::Element *added = method_icalls.push_back(im_icall);
+			method_icalls_map.insert(&E->get(), &added->get());
+		}
+	}
+}
+
+Error BindingsGenerator::generate_cs_core_project(const String &p_output_dir, bool p_verbose_output) {
+
+	verbose_output = p_verbose_output;
+
+	DirAccessRef da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
+	ERR_FAIL_COND_V(!da, ERR_CANT_CREATE);
+
+	if (!DirAccess::exists(p_output_dir)) {
+		Error err = da->make_dir_recursive(p_output_dir);
+		ERR_FAIL_COND_V(err != OK, ERR_CANT_CREATE);
+	}
+
+	da->change_dir(p_output_dir);
+	da->make_dir("Core");
+	da->make_dir("ObjectType");
+
+	String core_dir = path_join(p_output_dir, "Core");
+	String obj_type_dir = path_join(p_output_dir, "ObjectType");
+
+	Vector<String> compile_items;
+
+	NETSolution solution(API_ASSEMBLY_NAME);
+
+	if (!solution.set_path(p_output_dir))
+		return ERR_FILE_NOT_FOUND;
+
+	for (Map<String, TypeInterface>::Element *E = obj_types.front(); E; E = E->next()) {
+		const TypeInterface &itype = E->get();
+
+		if (itype.api_type == ClassDB::API_EDITOR)
+			continue;
+
+		String output_file = path_join(obj_type_dir, E->get().proxy_name + ".cs");
+		Error err = _generate_cs_type(E->get(), output_file);
+
+		if (err == ERR_SKIP)
+			continue;
+
+		if (err != OK)
+			return err;
+
+		compile_items.push_back(output_file);
+	}
+
+#define GENERATE_BUILTIN_TYPE(m_name)                                       \
+	{                                                                       \
+		String output_file = path_join(core_dir, #m_name ".cs");            \
+		Error err = _generate_cs_type(builtin_types[#m_name], output_file); \
+		if (err != OK)                                                      \
+			return err;                                                     \
+		compile_items.push_back(output_file);                               \
+	}
+
+	GENERATE_BUILTIN_TYPE(NodePath);
+	GENERATE_BUILTIN_TYPE(RID);
+
+#undef GENERATE_BUILTIN_TYPE
+
+	// Generate source for GlobalConstants
+
+	String constants_source;
+	int global_constants_count = GlobalConstants::get_global_constant_count();
+
+	if (global_constants_count > 0) {
+		Map<String, DocData::ClassDoc>::Element *match = EditorHelp::get_doc_data()->class_list.find("@Global Scope");
+
+		ERR_EXPLAIN("Could not find `@Global Scope` in DocData");
+		ERR_FAIL_COND_V(!match, ERR_BUG);
+
+		const DocData::ClassDoc &global_scope_doc = match->value();
+
+		for (int i = 0; i < global_constants_count; i++) {
+			const DocData::ConstantDoc &const_doc = global_scope_doc.constants[i];
+
+			if (i > 0)
+				constants_source += MEMBER_BEGIN;
+
+			if (const_doc.description.size()) {
+				constants_source += "/// <summary>\n";
+
+				Vector<String> description_lines = const_doc.description.split("\n");
+
+				for (int i = 0; i < description_lines.size(); i++) {
+					if (description_lines[i].size()) {
+						constants_source += INDENT2 "/// ";
+						constants_source += description_lines[i].strip_edges().xml_escape();
+						constants_source += "\n";
+					}
+				}
+
+				constants_source += INDENT2 "/// </summary>" MEMBER_BEGIN;
+			}
+
+			constants_source += "public const int ";
+			constants_source += GlobalConstants::get_global_constant_name(i);
+			constants_source += " = ";
+			constants_source += itos(GlobalConstants::get_global_constant_value(i));
+			constants_source += ";";
+		}
+	}
+
+	// Generate sources from compressed files
+
+	Map<String, CompressedFile> compressed_files;
+	get_compressed_files(compressed_files);
+
+	for (Map<String, CompressedFile>::Element *E = compressed_files.front(); E; E = E->next()) {
+		const String &file_name = E->key();
+		const CompressedFile &file_data = E->value();
+
+		String output_file = path_join(core_dir, file_name);
+
+		Vector<uint8_t> data;
+		data.resize(file_data.uncompressed_size);
+		Compression::decompress(data.ptr(), file_data.uncompressed_size, file_data.data, file_data.compressed_size, Compression::MODE_DEFLATE);
+
+		if (file_name.get_basename() == BINDINGS_GLOBAL_SCOPE_CLASS) {
+			// GD.cs must be formatted to include the generated global constants
+			String data_str = String::utf8(reinterpret_cast<const char *>(data.ptr()), data.size());
+
+			Dictionary format_keys;
+			format_keys["GodotGlobalConstants"] = constants_source;
+			data_str = data_str.format(format_keys, "/*{_}*/");
+
+			CharString data_utf8 = data_str.utf8();
+			data.resize(data_utf8.length());
+			copymem(data.ptr(), reinterpret_cast<const uint8_t *>(data_utf8.get_data()), data_utf8.length());
+		}
+
+		FileAccessRef file = FileAccess::open(output_file, FileAccess::WRITE);
+		ERR_FAIL_COND_V(!file, ERR_FILE_CANT_WRITE);
+		file->store_buffer(data.ptr(), data.size());
+		file->close();
+
+		compile_items.push_back(output_file);
+	}
+
+	List<String> cs_icalls_content;
+
+	cs_icalls_content.push_back("using System;\n"
+								"using System.Runtime.CompilerServices;\n"
+								"using System.Collections.Generic;\n"
+								"\n");
+	cs_icalls_content.push_back("namespace " BINDINGS_NAMESPACE "\n" OPEN_BLOCK);
+	cs_icalls_content.push_back(INDENT1 "internal static class " CS_CLASS_NATIVECALLS "\n" INDENT1 OPEN_BLOCK);
+
+#define ADD_INTERNAL_CALL(m_icall)                                                             \
+	if (!m_icall.editor_only) {                                                                \
+		cs_icalls_content.push_back(INDENT2 "[MethodImpl(MethodImplOptions.InternalCall)]\n"); \
+		cs_icalls_content.push_back(INDENT2 "internal extern static ");                        \
+		cs_icalls_content.push_back(m_icall.im_type_out + " ");                                \
+		cs_icalls_content.push_back(m_icall.name + "(");                                       \
+		cs_icalls_content.push_back(m_icall.im_sig + ");\n");                                  \
+	}
+
+	for (const List<InternalCall>::Element *E = core_custom_icalls.front(); E; E = E->next())
+		ADD_INTERNAL_CALL(E->get());
+	for (const List<InternalCall>::Element *E = method_icalls.front(); E; E = E->next())
+		ADD_INTERNAL_CALL(E->get());
+
+#undef ADD_INTERNAL_CALL
+
+	cs_icalls_content.push_back(INDENT1 CLOSE_BLOCK CLOSE_BLOCK);
+
+	String internal_methods_file = path_join(core_dir, CS_CLASS_NATIVECALLS ".cs");
+
+	Error err = _save_file(internal_methods_file, cs_icalls_content);
+	if (err != OK)
+		return err;
+
+	compile_items.push_back(internal_methods_file);
+
+	String guid = CSharpProject::generate_core_api_project(p_output_dir, compile_items);
+
+	solution.add_new_project(API_ASSEMBLY_NAME, guid);
+
+	Error sln_error = solution.save();
+	if (sln_error != OK) {
+		ERR_PRINT("Could not to save .NET solution.");
+		return sln_error;
+	}
+
+	return OK;
+}
+
+Error BindingsGenerator::generate_cs_editor_project(const String &p_output_dir, const String &p_core_dll_path, bool p_verbose_output) {
+
+	verbose_output = p_verbose_output;
+
+	DirAccessRef da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
+	ERR_FAIL_COND_V(!da, ERR_CANT_CREATE);
+
+	if (!DirAccess::exists(p_output_dir)) {
+		Error err = da->make_dir_recursive(p_output_dir);
+		ERR_FAIL_COND_V(err != OK, ERR_CANT_CREATE);
+	}
+
+	da->change_dir(p_output_dir);
+	da->make_dir("Core");
+	da->make_dir("ObjectType");
+
+	String core_dir = path_join(p_output_dir, "Core");
+	String obj_type_dir = path_join(p_output_dir, "ObjectType");
+
+	Vector<String> compile_items;
+
+	NETSolution solution(EDITOR_API_ASSEMBLY_NAME);
+
+	if (!solution.set_path(p_output_dir))
+		return ERR_FILE_NOT_FOUND;
+
+	for (Map<String, TypeInterface>::Element *E = obj_types.front(); E; E = E->next()) {
+		const TypeInterface &itype = E->get();
+
+		if (itype.api_type != ClassDB::API_EDITOR)
+			continue;
+
+		String output_file = path_join(obj_type_dir, E->get().proxy_name + ".cs");
+		Error err = _generate_cs_type(E->get(), output_file);
+
+		if (err == ERR_SKIP)
+			continue;
+
+		if (err != OK)
+			return err;
+
+		compile_items.push_back(output_file);
+	}
+
+	List<String> cs_icalls_content;
+
+	cs_icalls_content.push_back("using System;\n"
+								"using System.Runtime.CompilerServices;\n"
+								"using System.Collections.Generic;\n"
+								"\n");
+	cs_icalls_content.push_back("namespace " BINDINGS_NAMESPACE "\n" OPEN_BLOCK);
+	cs_icalls_content.push_back(INDENT1 "internal static class " CS_CLASS_NATIVECALLS_EDITOR "\n" INDENT1 OPEN_BLOCK);
+
+#define ADD_INTERNAL_CALL(m_icall)                                                             \
+	if (m_icall.editor_only) {                                                                 \
+		cs_icalls_content.push_back(INDENT2 "[MethodImpl(MethodImplOptions.InternalCall)]\n"); \
+		cs_icalls_content.push_back(INDENT2 "internal extern static ");                        \
+		cs_icalls_content.push_back(m_icall.im_type_out + " ");                                \
+		cs_icalls_content.push_back(m_icall.name + "(");                                       \
+		cs_icalls_content.push_back(m_icall.im_sig + ");\n");                                  \
+	}
+
+	for (const List<InternalCall>::Element *E = editor_custom_icalls.front(); E; E = E->next())
+		ADD_INTERNAL_CALL(E->get());
+	for (const List<InternalCall>::Element *E = method_icalls.front(); E; E = E->next())
+		ADD_INTERNAL_CALL(E->get());
+
+#undef ADD_INTERNAL_CALL
+
+	cs_icalls_content.push_back(INDENT1 CLOSE_BLOCK CLOSE_BLOCK);
+
+	String internal_methods_file = path_join(core_dir, CS_CLASS_NATIVECALLS_EDITOR ".cs");
+
+	Error err = _save_file(internal_methods_file, cs_icalls_content);
+	if (err != OK)
+		return err;
+
+	compile_items.push_back(internal_methods_file);
+
+	String guid = CSharpProject::generate_editor_api_project(p_output_dir, p_core_dll_path, compile_items);
+
+	solution.add_new_project(EDITOR_API_ASSEMBLY_NAME, guid);
+
+	Error sln_error = solution.save();
+	if (sln_error != OK) {
+		ERR_PRINT("Could not to save .NET solution.");
+		return sln_error;
+	}
+
+	return OK;
+}
+
+// TODO: there are constants that hide inherited members. must explicitly use `new` to avoid warnings
+// e.g.: warning CS0108: 'SpriteBase3D.FLAG_MAX' hides inherited member 'GeometryInstance.FLAG_MAX'. Use the new keyword if hiding was intended.
+Error BindingsGenerator::_generate_cs_type(const TypeInterface &itype, const String &p_output_file) {
+
+	int method_bind_count = 0;
+
+	bool is_derived_type = itype.base_name.length();
+
+	if (is_derived_type && obj_types[itype.base_name].is_singleton && is_singleton_black_listed(itype.name))
+		return ERR_SKIP;
+
+	List<InternalCall> &custom_icalls = itype.api_type == ClassDB::API_EDITOR ? editor_custom_icalls : core_custom_icalls;
+
+	if (verbose_output)
+		OS::get_singleton()->print(String("Generating " + itype.proxy_name + ".cs...\n").utf8());
+
+	String ctor_method(ICALL_PREFIX + itype.proxy_name + "_Ctor");
+
+	List<String> cs_file;
+
+	cs_file.push_back("using System;\n"); // IntPtr
+
+	if (itype.requires_collections)
+		cs_file.push_back("using System.Collections.Generic;\n"); // Dictionary
+
+	cs_file.push_back("\nnamespace " BINDINGS_NAMESPACE "\n" OPEN_BLOCK);
+
+	const DocData::ClassDoc *class_doc = itype.class_doc;
+
+	if (class_doc && class_doc->description.size()) {
+		cs_file.push_back(INDENT1 "/// <summary>\n");
+
+		Vector<String> description_lines = class_doc->description.split("\n");
+
+		for (int i = 0; i < description_lines.size(); i++) {
+			if (description_lines[i].size()) {
+				cs_file.push_back(INDENT1 "/// ");
+				cs_file.push_back(description_lines[i].strip_edges().xml_escape());
+				cs_file.push_back("\n");
+			}
+		}
+
+		cs_file.push_back(INDENT1 "/// </summary>\n");
+	}
+
+	cs_file.push_back(INDENT1 "public ");
+	cs_file.push_back(itype.is_singleton ? "static class " : "class ");
+	cs_file.push_back(itype.proxy_name);
+
+	if (itype.is_singleton || !itype.is_object_type) {
+		cs_file.push_back("\n");
+	} else if (!is_derived_type) {
+		cs_file.push_back(" : IDisposable\n");
+	} else if (obj_types.has(itype.base_name)) {
+		cs_file.push_back(" : ");
+		cs_file.push_back(obj_types[itype.base_name].proxy_name);
+		cs_file.push_back("\n");
+	} else {
+		ERR_PRINTS("Base type ' " + itype.base_name + "' does not exist");
+		return ERR_INVALID_DATA;
+	}
+
+	cs_file.push_back(INDENT1 "{");
+
+	if (class_doc) {
+
+		// Add constants
+
+		for (int i = 0; i < class_doc->constants.size(); i++) {
+			const DocData::ConstantDoc &const_doc = class_doc->constants[i];
+
+			if (const_doc.description.size()) {
+				cs_file.push_back(MEMBER_BEGIN "/// <summary>\n");
+
+				Vector<String> description_lines = const_doc.description.split("\n");
+
+				for (int i = 0; i < description_lines.size(); i++) {
+					if (description_lines[i].size()) {
+						cs_file.push_back(INDENT2 "/// ");
+						cs_file.push_back(description_lines[i].strip_edges().xml_escape());
+						cs_file.push_back("\n");
+					}
+				}
+
+				cs_file.push_back(INDENT2 "/// </summary>");
+			}
+
+			cs_file.push_back(MEMBER_BEGIN "public const int ");
+			cs_file.push_back(const_doc.name);
+			cs_file.push_back(" = ");
+			cs_file.push_back(const_doc.value);
+			cs_file.push_back(";");
+		}
+
+		if (class_doc->constants.size())
+			cs_file.push_back("\n");
+
+		// Add properties
+
+		const Vector<DocData::PropertyDoc> &properties = itype.class_doc->properties;
+
+		for (int i = 0; i < properties.size(); i++) {
+			const DocData::PropertyDoc &prop_doc = properties[i];
+
+			const MethodInterface *setter = itype.find_method_by_name(prop_doc.setter);
+
+			// Search it in base types too
+			const TypeInterface *current_type = &itype;
+			while (!setter && current_type->base_name.length()) {
+				Map<String, TypeInterface>::Element *base_match = obj_types.find(current_type->base_name);
+				ERR_FAIL_NULL_V(base_match, ERR_BUG);
+				current_type = &base_match->get();
+				setter = current_type->find_method_by_name(prop_doc.setter);
+			}
+
+			const MethodInterface *getter = itype.find_method_by_name(prop_doc.getter);
+
+			// Search it in base types too
+			current_type = &itype;
+			while (!getter && current_type->base_name.length()) {
+				Map<String, TypeInterface>::Element *base_match = obj_types.find(current_type->base_name);
+				ERR_FAIL_NULL_V(base_match, ERR_BUG);
+				current_type = &base_match->get();
+				getter = current_type->find_method_by_name(prop_doc.getter);
+			}
+
+			ERR_FAIL_COND_V(!setter && !getter, ERR_BUG);
+
+			bool is_valid = false;
+			int prop_index = ClassDB::get_property_index(itype.name, prop_doc.name, &is_valid);
+			ERR_FAIL_COND_V(!is_valid, ERR_BUG);
+
+			if (setter) {
+				int setter_argc = prop_index != -1 ? 2 : 1;
+				ERR_FAIL_COND_V(setter->arguments.size() != setter_argc, ERR_BUG);
+			}
+
+			if (getter) {
+				int getter_argc = prop_index != -1 ? 1 : 0;
+				ERR_FAIL_COND_V(getter->arguments.size() != getter_argc, ERR_BUG);
+			}
+
+			if (getter && setter) {
+				ERR_FAIL_COND_V(getter->return_type != setter->arguments.back()->get().type, ERR_BUG);
+			}
+
+			// Let's not trust PropertyDoc::type
+			String proptype_name = getter ? getter->return_type : setter->arguments.back()->get().type;
+
+			const TypeInterface *prop_itype = _get_type_by_name_or_null(proptype_name);
+			if (!prop_itype) {
+				// Try with underscore prefix
+				prop_itype = _get_type_by_name_or_null("_" + proptype_name);
+			}
+
+			ERR_FAIL_NULL_V(prop_itype, ERR_BUG);
+
+			String prop_proxy_name = escape_csharp_keyword(snake_to_pascal_case(prop_doc.name));
+
+			// Prevent property and enclosing type from sharing the same name
+			if (prop_proxy_name == itype.proxy_name) {
+				if (verbose_output) {
+					WARN_PRINTS("Name of property `" + prop_proxy_name + "` is ambiguous with the name of its class `" +
+								itype.proxy_name + "`. Renaming property to `" + prop_proxy_name + "_`");
+				}
+
+				prop_proxy_name += "_";
+			}
+
+			if (prop_doc.description.size()) {
+				cs_file.push_back(MEMBER_BEGIN "/// <summary>\n");
+
+				Vector<String> description_lines = prop_doc.description.split("\n");
+
+				for (int i = 0; i < description_lines.size(); i++) {
+					if (description_lines[i].size()) {
+						cs_file.push_back(INDENT2 "/// ");
+						cs_file.push_back(description_lines[i].strip_edges().xml_escape());
+						cs_file.push_back("\n");
+					}
+				}
+
+				cs_file.push_back(INDENT2 "/// </summary>");
+			}
+
+			cs_file.push_back(MEMBER_BEGIN "public ");
+
+			if (itype.is_singleton)
+				cs_file.push_back("static ");
+
+			cs_file.push_back(prop_itype->cs_type);
+			cs_file.push_back(" ");
+			cs_file.push_back(prop_proxy_name.replace("/", "__"));
+			cs_file.push_back("\n" INDENT2 OPEN_BLOCK);
+
+			if (getter) {
+				cs_file.push_back(INDENT3 "get\n" OPEN_BLOCK_L3);
+				cs_file.push_back("return ");
+				cs_file.push_back(getter->proxy_name + "(");
+				if (prop_index != -1)
+					cs_file.push_back(itos(prop_index));
+				cs_file.push_back(");\n" CLOSE_BLOCK_L3);
+			}
+
+			if (setter) {
+				cs_file.push_back(INDENT3 "set\n" OPEN_BLOCK_L3);
+				cs_file.push_back(setter->proxy_name + "(");
+				if (prop_index != -1)
+					cs_file.push_back(itos(prop_index) + ", ");
+				cs_file.push_back("value);\n" CLOSE_BLOCK_L3);
+			}
+
+			cs_file.push_back(CLOSE_BLOCK_L2);
+		}
+
+		if (class_doc->properties.size())
+			cs_file.push_back("\n");
+	}
+
+	if (!itype.is_object_type) {
+		cs_file.push_back(MEMBER_BEGIN "private const string " BINDINGS_NATIVE_NAME_FIELD " = \"" + itype.name + "\";\n");
+		cs_file.push_back(MEMBER_BEGIN "private bool disposed = false;\n");
+		cs_file.push_back(MEMBER_BEGIN "internal IntPtr " BINDINGS_PTR_FIELD ";\n");
+
+		cs_file.push_back(MEMBER_BEGIN "internal static IntPtr " CS_SMETHOD_GETINSTANCE "(");
+		cs_file.push_back(itype.proxy_name);
+		cs_file.push_back(" instance)\n" OPEN_BLOCK_L2 "return instance == null ? IntPtr.Zero : instance." BINDINGS_PTR_FIELD ";\n" CLOSE_BLOCK_L2);
+
+		// Add Destructor
+		cs_file.push_back(MEMBER_BEGIN "~");
+		cs_file.push_back(itype.proxy_name);
+		cs_file.push_back("()\n" OPEN_BLOCK_L2 "Dispose(false);\n" CLOSE_BLOCK_L2);
+
+		// Add the Dispose from IDisposable
+		cs_file.push_back(MEMBER_BEGIN "public void Dispose()\n" OPEN_BLOCK_L2 "Dispose(true);\n" INDENT3 "GC.SuppressFinalize(this);\n" CLOSE_BLOCK_L2);
+
+		// Add the virtual Dispose
+		cs_file.push_back(MEMBER_BEGIN "public virtual void Dispose(bool disposing)\n" OPEN_BLOCK_L2
+									   "if (disposed) return;\n" INDENT3
+									   "if (" BINDINGS_PTR_FIELD " != IntPtr.Zero)\n" OPEN_BLOCK_L3 "NativeCalls.godot_icall_");
+		cs_file.push_back(itype.proxy_name);
+		cs_file.push_back("_Dtor(" BINDINGS_PTR_FIELD ");\n" INDENT5 BINDINGS_PTR_FIELD " = IntPtr.Zero;\n" CLOSE_BLOCK_L3 INDENT3
+						  "GC.SuppressFinalize(this);\n" INDENT3 "disposed = true;\n" CLOSE_BLOCK_L2);
+
+		cs_file.push_back(MEMBER_BEGIN "internal ");
+		cs_file.push_back(itype.proxy_name);
+		cs_file.push_back("(IntPtr " BINDINGS_PTR_FIELD ")\n" OPEN_BLOCK_L2 "this." BINDINGS_PTR_FIELD " = " BINDINGS_PTR_FIELD ";\n" CLOSE_BLOCK_L2);
+
+		cs_file.push_back(MEMBER_BEGIN "public bool HasValidHandle()\n" OPEN_BLOCK_L2
+									   "return " BINDINGS_PTR_FIELD " == IntPtr.Zero;\n" CLOSE_BLOCK_L2);
+	} else if (itype.is_singleton) {
+		// Add the type name and the singleton pointer as static fields
+
+		cs_file.push_back(MEMBER_BEGIN "private const string " BINDINGS_NATIVE_NAME_FIELD " = \"");
+		cs_file.push_back(itype.name);
+		cs_file.push_back("\";\n");
+
+		cs_file.push_back(INDENT2 "internal static IntPtr " BINDINGS_PTR_FIELD " = ");
+		cs_file.push_back(itype.api_type == ClassDB::API_EDITOR ? CS_CLASS_NATIVECALLS_EDITOR : CS_CLASS_NATIVECALLS);
+		cs_file.push_back("." ICALL_PREFIX);
+		cs_file.push_back(itype.name);
+		cs_file.push_back(SINGLETON_ICALL_SUFFIX "();\n");
+	} else {
+		// Add member fields
+
+		cs_file.push_back(MEMBER_BEGIN "private const string " BINDINGS_NATIVE_NAME_FIELD " = \"");
+		cs_file.push_back(itype.name);
+		cs_file.push_back("\";\n");
+
+		// Only the base class stores the pointer to the native object
+		// This pointer is expected to be and must be of type Object*
+		if (!is_derived_type) {
+			cs_file.push_back(MEMBER_BEGIN "private bool disposed = false;\n");
+			cs_file.push_back(INDENT2 "internal IntPtr " BINDINGS_PTR_FIELD ";\n");
+			cs_file.push_back(INDENT2 "internal bool " CS_FIELD_MEMORYOWN ";\n");
+		}
+
+		// Add default constructor
+		if (itype.is_instantiable) {
+			cs_file.push_back(MEMBER_BEGIN "public ");
+			cs_file.push_back(itype.proxy_name);
+			cs_file.push_back("() : this(");
+			cs_file.push_back(itype.memory_own ? "true" : "false");
+
+			// The default constructor may also be called by the engine when instancing existing native objects
+			// The engine will initialize the pointer field of the managed side before calling the constructor
+			// This is why we only allocate a new native object from the constructor if the pointer field is not set
+			cs_file.push_back(")\n" OPEN_BLOCK_L2 "if (" BINDINGS_PTR_FIELD " == IntPtr.Zero)\n" INDENT4 BINDINGS_PTR_FIELD " = ");
+			cs_file.push_back(itype.api_type == ClassDB::API_EDITOR ? CS_CLASS_NATIVECALLS_EDITOR : CS_CLASS_NATIVECALLS);
+			cs_file.push_back("." + ctor_method);
+			cs_file.push_back("(this);\n" CLOSE_BLOCK_L2);
+		} else {
+			// Hide the constructor
+			cs_file.push_back(MEMBER_BEGIN "internal ");
+			cs_file.push_back(itype.proxy_name);
+			cs_file.push_back("() {}\n");
+		}
+
+		// Add.. em.. trick constructor. Sort of.
+		cs_file.push_back(MEMBER_BEGIN "internal ");
+		cs_file.push_back(itype.proxy_name);
+		if (is_derived_type) {
+			cs_file.push_back("(bool " CS_FIELD_MEMORYOWN ") : base(" CS_FIELD_MEMORYOWN ") {}\n");
+		} else {
+			cs_file.push_back("(bool " CS_FIELD_MEMORYOWN ")\n" OPEN_BLOCK_L2
+							  "this." CS_FIELD_MEMORYOWN " = " CS_FIELD_MEMORYOWN ";\n" CLOSE_BLOCK_L2);
+		}
+
+		// Add methods
+
+		if (!is_derived_type) {
+			cs_file.push_back(MEMBER_BEGIN "public bool HasValidHandle()\n" OPEN_BLOCK_L2
+										   "return " BINDINGS_PTR_FIELD " == IntPtr.Zero;\n" CLOSE_BLOCK_L2);
+
+			cs_file.push_back(MEMBER_BEGIN "internal static IntPtr " CS_SMETHOD_GETINSTANCE "(Object instance)\n" OPEN_BLOCK_L2
+										   "return instance == null ? IntPtr.Zero : instance." BINDINGS_PTR_FIELD ";\n" CLOSE_BLOCK_L2);
+		}
+
+		if (!is_derived_type) {
+			// Add destructor
+			cs_file.push_back(MEMBER_BEGIN "~");
+			cs_file.push_back(itype.proxy_name);
+			cs_file.push_back("()\n" OPEN_BLOCK_L2 "Dispose(false);\n" CLOSE_BLOCK_L2);
+
+			// Add the Dispose from IDisposable
+			cs_file.push_back(MEMBER_BEGIN "public void Dispose()\n" OPEN_BLOCK_L2 "Dispose(true);\n" INDENT3 "GC.SuppressFinalize(this);\n" CLOSE_BLOCK_L2);
+
+			// Add the virtual Dispose
+			cs_file.push_back(MEMBER_BEGIN "public virtual void Dispose(bool disposing)\n" OPEN_BLOCK_L2
+										   "if (disposed) return;\n" INDENT3
+										   "if (" BINDINGS_PTR_FIELD " != IntPtr.Zero)\n" OPEN_BLOCK_L3
+										   "if (" CS_FIELD_MEMORYOWN ")\n" OPEN_BLOCK_L4 CS_FIELD_MEMORYOWN
+										   " = false;\n" INDENT5 CS_CLASS_NATIVECALLS "." ICALL_OBJECT_DTOR
+										   "(" BINDINGS_PTR_FIELD ");\n" INDENT5 BINDINGS_PTR_FIELD
+										   " = IntPtr.Zero;\n" CLOSE_BLOCK_L4 CLOSE_BLOCK_L3 INDENT3
+										   "GC.SuppressFinalize(this);\n" INDENT3 "disposed = true;\n" CLOSE_BLOCK_L2);
+
+			Map<String, TypeInterface>::Element *array_itype = builtin_types.find("Array");
+
+			if (!array_itype) {
+				ERR_PRINT("BUG: Array type interface not found!");
+				return ERR_BUG;
+			}
+
+			cs_file.push_back(MEMBER_BEGIN "private void _AwaitedSignalCallback(");
+			cs_file.push_back(array_itype->get().cs_type);
+			cs_file.push_back(" args, SignalAwaiter awaiter)\n" OPEN_BLOCK_L2 "awaiter.SignalCallback(args);\n" CLOSE_BLOCK_L2);
+
+			Map<String, TypeInterface>::Element *object_itype = obj_types.find("Object");
+
+			if (!object_itype) {
+				ERR_PRINT("BUG: Array type interface not found!");
+				return ERR_BUG;
+			}
+
+			cs_file.push_back(MEMBER_BEGIN "public " CS_CLASS_SIGNALAWAITER " ToSignal(");
+			cs_file.push_back(object_itype->get().cs_type);
+			cs_file.push_back(" source, string signal)\n" OPEN_BLOCK_L2
+							  "return new " CS_CLASS_SIGNALAWAITER "(source, signal, this);\n" CLOSE_BLOCK_L2);
+		}
+	}
+
+	Map<String, String>::Element *extra_member = extra_members.find(itype.name);
+	if (extra_member)
+		cs_file.push_back(extra_member->get());
+
+	for (const List<MethodInterface>::Element *E = itype.methods.front(); E; E = E->next()) {
+		const MethodInterface &imethod = E->get();
+
+		const TypeInterface *return_type = _get_type_by_name_or_placeholder(imethod.return_type);
+
+		String method_bind_field = "method_bind_" + itos(method_bind_count);
+
+		String icall_params = method_bind_field + ", " + sformat(itype.cs_in, "this");
+		String arguments_sig;
+		String cs_in_statements;
+
+		List<String> default_args_doc;
+
+		// Retrieve information from the arguments
+		for (const List<ArgumentInterface>::Element *F = imethod.arguments.front(); F; F = F->next()) {
+			const ArgumentInterface &iarg = F->get();
+			const TypeInterface *arg_type = _get_type_by_name_or_placeholder(iarg.type);
+
+			// Add the current arguments to the signature
+			// If the argument has a default value which is not a constant, we will make it Nullable
+			{
+				if (F != imethod.arguments.front())
+					arguments_sig += ", ";
+
+				if (iarg.def_param_mode == ArgumentInterface::NULLABLE_VAL)
+					arguments_sig += "Nullable<";
+
+				arguments_sig += arg_type->cs_type;
+
+				if (iarg.def_param_mode == ArgumentInterface::NULLABLE_VAL)
+					arguments_sig += "> ";
+				else
+					arguments_sig += " ";
+
+				arguments_sig += iarg.name;
+
+				if (iarg.default_argument.size()) {
+					if (iarg.def_param_mode != ArgumentInterface::CONSTANT)
+						arguments_sig += " = null";
+					else
+						arguments_sig += " = " + sformat(iarg.default_argument, arg_type->cs_type);
+				}
+			}
+
+			icall_params += ", ";
+
+			if (iarg.default_argument.size() && iarg.def_param_mode != ArgumentInterface::CONSTANT) {
+				// The default value of an argument must be constant. Otherwise we make it Nullable and do the following:
+				// Type arg_in = arg.HasValue ? arg.Value : <non-const default value>;
+				String arg_in = iarg.name;
+				arg_in += "_in";
+
+				cs_in_statements += arg_type->cs_type;
+				cs_in_statements += " ";
+				cs_in_statements += arg_in;
+				cs_in_statements += " = ";
+				cs_in_statements += iarg.name;
+
+				if (iarg.def_param_mode == ArgumentInterface::NULLABLE_VAL)
+					cs_in_statements += ".HasValue ? ";
+				else
+					cs_in_statements += " != null ? ";
+
+				cs_in_statements += iarg.name;
+
+				if (iarg.def_param_mode == ArgumentInterface::NULLABLE_VAL)
+					cs_in_statements += ".Value : ";
+				else
+					cs_in_statements += " : ";
+
+				String def_arg = sformat(iarg.default_argument, arg_type->cs_type);
+
+				cs_in_statements += def_arg;
+				cs_in_statements += ";\n" INDENT3;
+
+				icall_params += arg_type->cs_in.empty() ? arg_in : sformat(arg_type->cs_in, arg_in);
+
+				default_args_doc.push_back(INDENT2 "/// <param name=\"" + iarg.name + "\">If the param is null, then the default value is " + def_arg + "</param>\n");
+			} else {
+				icall_params += arg_type->cs_in.empty() ? iarg.name : sformat(arg_type->cs_in, iarg.name);
+			}
+		}
+
+		// Generate method
+		{
+			if (!imethod.is_virtual && !imethod.requires_object_call) {
+				cs_file.push_back(MEMBER_BEGIN "private ");
+				cs_file.push_back(itype.is_singleton ? "static IntPtr " : "IntPtr ");
+				cs_file.push_back(method_bind_field + " = " CS_CLASS_NATIVECALLS "." ICALL_GET_METHODBIND "(" BINDINGS_NATIVE_NAME_FIELD ", \"");
+				cs_file.push_back(imethod.name);
+				cs_file.push_back("\");\n");
+			}
+
+			if (imethod.method_doc && imethod.method_doc->description.size()) {
+				cs_file.push_back(MEMBER_BEGIN "/// <summary>\n");
+
+				Vector<String> description_lines = imethod.method_doc->description.split("\n");
+
+				for (int i = 0; i < description_lines.size(); i++) {
+					if (description_lines[i].size()) {
+						cs_file.push_back(INDENT2 "/// ");
+						cs_file.push_back(description_lines[i].strip_edges().xml_escape());
+						cs_file.push_back("\n");
+					}
+				}
+
+				for (List<String>::Element *E = default_args_doc.front(); E; E = E->next()) {
+					cs_file.push_back(E->get().xml_escape());
+				}
+
+				cs_file.push_back(INDENT2 "/// </summary>");
+			}
+
+			if (!imethod.is_internal) {
+				cs_file.push_back(MEMBER_BEGIN "[GodotMethod(\"");
+				cs_file.push_back(imethod.name);
+				cs_file.push_back("\")]");
+			}
+
+			cs_file.push_back(MEMBER_BEGIN);
+			cs_file.push_back(imethod.is_internal ? "internal " : "public ");
+
+			if (itype.is_singleton) {
+				cs_file.push_back("static ");
+			} else if (imethod.is_virtual) {
+				cs_file.push_back("virtual ");
+			}
+
+			cs_file.push_back(return_type->cs_type + " ");
+			cs_file.push_back(imethod.proxy_name + "(");
+			cs_file.push_back(arguments_sig + ")\n" OPEN_BLOCK_L2);
+
+			if (imethod.is_virtual) {
+				// Godot virtual method must be overridden, therefore we return a default value by default.
+
+				if (return_type->name == "void") {
+					cs_file.push_back("return;\n" CLOSE_BLOCK_L2);
+				} else {
+					cs_file.push_back("return default(");
+					cs_file.push_back(return_type->cs_type);
+					cs_file.push_back(");\n" CLOSE_BLOCK_L2);
+				}
+
+				continue;
+			}
+
+			if (imethod.requires_object_call) {
+				// Fallback to Godot's object.Call(string, params)
+
+				cs_file.push_back(CS_METHOD_CALL "(\"");
+				cs_file.push_back(imethod.name);
+				cs_file.push_back("\"");
+
+				for (const List<ArgumentInterface>::Element *F = imethod.arguments.front(); F; F = F->next()) {
+					cs_file.push_back(", ");
+					cs_file.push_back(F->get().name);
+				}
+
+				cs_file.push_back(");\n" CLOSE_BLOCK_L2);
+
+				continue;
+			}
+
+			const Map<const MethodInterface *, const InternalCall *>::Element *match = method_icalls_map.find(&E->get());
+			ERR_FAIL_NULL_V(match, ERR_BUG);
+
+			const InternalCall *im_icall = match->value();
+
+			String im_call = im_icall->editor_only ? CS_CLASS_NATIVECALLS_EDITOR : CS_CLASS_NATIVECALLS;
+			im_call += "." + im_icall->name + "(" + icall_params + ");\n";
+
+			if (imethod.arguments.size())
+				cs_file.push_back(cs_in_statements);
+
+			if (return_type->name == "void") {
+				cs_file.push_back(im_call);
+			} else if (return_type->cs_out.empty()) {
+				cs_file.push_back("return " + im_call);
+			} else {
+				cs_file.push_back(return_type->im_type_out);
+				cs_file.push_back(" " LOCAL_RET " = ");
+				cs_file.push_back(im_call);
+				cs_file.push_back(INDENT3);
+				cs_file.push_back(sformat(return_type->cs_out, LOCAL_RET) + "\n");
+			}
+
+			cs_file.push_back(CLOSE_BLOCK_L2);
+		}
+
+		method_bind_count++;
+	}
+
+	if (itype.is_singleton) {
+		InternalCall singleton_icall = InternalCall(itype.api_type, ICALL_PREFIX + itype.name + SINGLETON_ICALL_SUFFIX, "IntPtr");
+
+		if (!find_icall_by_name(singleton_icall.name, custom_icalls))
+			custom_icalls.push_back(singleton_icall);
+	}
+
+	if (itype.is_instantiable) {
+		InternalCall ctor_icall = InternalCall(itype.api_type, ctor_method, "IntPtr", itype.proxy_name + " obj");
+
+		if (!find_icall_by_name(ctor_icall.name, custom_icalls))
+			custom_icalls.push_back(ctor_icall);
+	}
+
+	cs_file.push_back(INDENT1 CLOSE_BLOCK CLOSE_BLOCK);
+
+	return _save_file(p_output_file, cs_file);
+}
+
+Error BindingsGenerator::generate_glue(const String &p_output_dir) {
+
+	verbose_output = true;
+
+	bool dir_exists = DirAccess::exists(p_output_dir);
+	ERR_EXPLAIN("The output directory does not exist.");
+	ERR_FAIL_COND_V(!dir_exists, ERR_FILE_BAD_PATH);
+
+	List<String> cpp_file;
+
+	cpp_file.push_back("#include \"" GLUE_HEADER_FILE "\"\n"
+					   "\n");
+
+	List<const InternalCall *> generated_icall_funcs;
+
+	for (Map<String, TypeInterface>::Element *type_elem = obj_types.front(); type_elem; type_elem = type_elem->next()) {
+		const TypeInterface &itype = type_elem->get();
+
+		if (itype.base_name.length() && obj_types[itype.base_name].is_singleton && is_singleton_black_listed(itype.name))
+			continue;
+
+		List<InternalCall> &custom_icalls = itype.api_type == ClassDB::API_EDITOR ? editor_custom_icalls : core_custom_icalls;
+
+		OS::get_singleton()->print(String("Generating " + itype.name + "...\n").utf8());
+
+		String ctor_method(ICALL_PREFIX + itype.proxy_name + "_Ctor");
+
+		for (const List<MethodInterface>::Element *E = itype.methods.front(); E; E = E->next()) {
+			const MethodInterface &imethod = E->get();
+
+			if (imethod.is_virtual)
+				continue;
+
+			bool ret_void = imethod.return_type == "void";
+
+			const TypeInterface *return_type = _get_type_by_name_or_placeholder(imethod.return_type);
+
+			String argc_str = itos(imethod.arguments.size());
+
+			String c_func_sig = "MethodBind* " CS_PARAM_METHODBIND ", " + itype.c_type_in + " " CS_PARAM_INSTANCE;
+			String c_in_statements;
+			String c_args_var_content;
+
+			// Get arguments information
+			int i = 0;
+			for (const List<ArgumentInterface>::Element *F = imethod.arguments.front(); F; F = F->next()) {
+				const ArgumentInterface &iarg = F->get();
+				const TypeInterface *arg_type = _get_type_by_name_or_placeholder(iarg.type);
+
+				String c_param_name = "arg" + itos(i + 1);
+
+				if (imethod.is_vararg) {
+					if (i < imethod.arguments.size() - 1) {
+						c_in_statements += sformat(arg_type->c_in.size() ? arg_type->c_in : TypeInterface::DEFAULT_VARARG_C_IN, "Variant", c_param_name);
+						c_in_statements += "\t" C_LOCAL_PTRCALL_ARGS ".set(0, ";
+						c_in_statements += sformat("&%s_in", c_param_name);
+						c_in_statements += ");\n";
+					}
+				} else {
+					if (i > 0)
+						c_args_var_content += ", ";
+					if (arg_type->c_in.size())
+						c_in_statements += sformat(arg_type->c_in, arg_type->c_type, c_param_name);
+					c_args_var_content += sformat(arg_type->c_arg_in, c_param_name);
+				}
+
+				c_func_sig += ", ";
+				c_func_sig += arg_type->c_type_in;
+				c_func_sig += " ";
+				c_func_sig += c_param_name;
+
+				i++;
+			}
+
+			const Map<const MethodInterface *, const InternalCall *>::Element *match = method_icalls_map.find(&E->get());
+			ERR_FAIL_NULL_V(match, ERR_BUG);
+
+			const InternalCall *im_icall = match->value();
+			String icall_method = im_icall->name;
+
+			if (!generated_icall_funcs.find(im_icall)) {
+				generated_icall_funcs.push_back(im_icall);
+
+				if (im_icall->editor_only)
+					cpp_file.push_back("#ifdef TOOLS_ENABLED\n");
+
+				// Generate icall function
+
+				cpp_file.push_back(ret_void ? "void " : return_type->c_type_out + " ");
+				cpp_file.push_back(icall_method);
+				cpp_file.push_back("(");
+				cpp_file.push_back(c_func_sig);
+				cpp_file.push_back(") " OPEN_BLOCK);
+
+				String fail_ret = ret_void ? "" : ", " + (return_type->c_type_out.ends_with("*") ? "NULL" : return_type->c_type_out + "()");
+
+				if (!ret_void) {
+					String ptrcall_return_type;
+					String initialization;
+
+					if (return_type->is_object_type) {
+						ptrcall_return_type = return_type->is_reference ? "Ref<Reference>" : return_type->c_type;
+						initialization = return_type->is_reference ? "" : " = NULL";
+					} else {
+						ptrcall_return_type = return_type->c_type;
+					}
+
+					cpp_file.push_back("\t" + ptrcall_return_type);
+					cpp_file.push_back(" " LOCAL_RET);
+					cpp_file.push_back(initialization + ";\n");
+					cpp_file.push_back("\tERR_FAIL_NULL_V(" CS_PARAM_INSTANCE);
+					cpp_file.push_back(fail_ret);
+					cpp_file.push_back(");\n");
+				} else {
+					cpp_file.push_back("\tERR_FAIL_NULL(" CS_PARAM_INSTANCE ");\n");
+				}
+
+				if (imethod.arguments.size()) {
+					if (imethod.is_vararg) {
+						String err_fail_macro = ret_void ? "ERR_FAIL_COND" : "ERR_FAIL_COND_V";
+						String vararg_arg = "arg" + argc_str;
+						String real_argc_str = itos(imethod.arguments.size() - 1); // Arguments count without vararg
+
+						cpp_file.push_back("\tVector<Variant> varargs;\n"
+										   "\tint vararg_length = mono_array_length(");
+						cpp_file.push_back(vararg_arg);
+						cpp_file.push_back(");\n\tint total_length = ");
+						cpp_file.push_back(real_argc_str);
+						cpp_file.push_back(" + vararg_length;\n\t");
+						cpp_file.push_back(err_fail_macro);
+						cpp_file.push_back("(varargs.resize(vararg_length) != OK");
+						cpp_file.push_back(fail_ret);
+						cpp_file.push_back(");\n\tVector<Variant*> " C_LOCAL_PTRCALL_ARGS ";\n\t");
+						cpp_file.push_back(err_fail_macro);
+						cpp_file.push_back("(call_args.resize(total_length) != OK");
+						cpp_file.push_back(fail_ret);
+						cpp_file.push_back(");\n");
+						cpp_file.push_back(c_in_statements);
+						cpp_file.push_back("\tfor (int i = 0; i < vararg_length; i++) " OPEN_BLOCK
+										   "\t\tMonoObject* elem = mono_array_get(");
+						cpp_file.push_back(vararg_arg);
+						cpp_file.push_back(", MonoObject*, i);\n"
+										   "\t\tvarargs.set(i, GDMonoMarshal::mono_object_to_variant(elem));\n"
+										   "\t\t" C_LOCAL_PTRCALL_ARGS ".set(");
+						cpp_file.push_back(real_argc_str);
+						cpp_file.push_back(" + i, &varargs[i]);\n\t" CLOSE_BLOCK);
+					} else {
+						cpp_file.push_back(c_in_statements);
+						cpp_file.push_back("\tconst void* " C_LOCAL_PTRCALL_ARGS "[");
+						cpp_file.push_back(argc_str + "] = { ");
+						cpp_file.push_back(c_args_var_content + " };\n");
+					}
+				}
+
+				if (imethod.is_vararg) {
+					cpp_file.push_back("\tVariant::CallError vcall_error;\n\t");
+
+					if (!ret_void)
+						cpp_file.push_back(LOCAL_RET " = ");
+
+					cpp_file.push_back(CS_PARAM_METHODBIND "->call(" CS_PARAM_INSTANCE ", ");
+					cpp_file.push_back(imethod.arguments.size() ? "(const Variant**)" C_LOCAL_PTRCALL_ARGS ".ptr()" : "NULL");
+					cpp_file.push_back(", total_length, vcall_error);\n");
+				} else {
+					cpp_file.push_back("\t" CS_PARAM_METHODBIND "->ptrcall(" CS_PARAM_INSTANCE ", ");
+					cpp_file.push_back(imethod.arguments.size() ? C_LOCAL_PTRCALL_ARGS ", " : "NULL, ");
+					cpp_file.push_back(!ret_void ? "&" LOCAL_RET ");\n" : "NULL);\n");
+				}
+
+				if (!ret_void) {
+					if (return_type->c_out.empty())
+						cpp_file.push_back("\treturn " LOCAL_RET ";\n");
+					else
+						cpp_file.push_back(sformat(return_type->c_out, return_type->c_type_out, LOCAL_RET, return_type->name));
+				}
+
+				cpp_file.push_back(CLOSE_BLOCK "\n");
+
+				if (im_icall->editor_only)
+					cpp_file.push_back("#endif // TOOLS_ENABLED\n");
+			}
+		}
+
+		if (itype.is_singleton) {
+			String singleton_icall_name = ICALL_PREFIX + itype.name + SINGLETON_ICALL_SUFFIX;
+			InternalCall singleton_icall = InternalCall(itype.api_type, singleton_icall_name, "IntPtr");
+
+			if (!find_icall_by_name(singleton_icall.name, custom_icalls))
+				custom_icalls.push_back(singleton_icall);
+
+			cpp_file.push_back("Object* ");
+			cpp_file.push_back(singleton_icall_name);
+			cpp_file.push_back("() " OPEN_BLOCK "\treturn ProjectSettings::get_singleton()->get_singleton_object(\"");
+			cpp_file.push_back(itype.proxy_name);
+			cpp_file.push_back("\");\n" CLOSE_BLOCK "\n");
+		}
+
+		if (itype.is_instantiable) {
+			InternalCall ctor_icall = InternalCall(itype.api_type, ctor_method, "IntPtr", itype.proxy_name + " obj");
+
+			if (!find_icall_by_name(ctor_icall.name, custom_icalls))
+				custom_icalls.push_back(ctor_icall);
+
+			cpp_file.push_back("Object* ");
+			cpp_file.push_back(ctor_method);
+			cpp_file.push_back("(MonoObject* obj) " OPEN_BLOCK
+							   "\t" C_MACRO_OBJECT_CONSTRUCT "(instance, \"");
+			cpp_file.push_back(itype.name);
+			cpp_file.push_back("\");\n"
+							   "\t" C_METHOD_TIE_MANAGED_TO_UNMANAGED "(obj, instance);\n"
+							   "\treturn instance;\n" CLOSE_BLOCK "\n");
+		}
+	}
+
+	cpp_file.push_back("namespace GodotSharpBindings\n" OPEN_BLOCK);
+	cpp_file.push_back("uint64_t get_core_api_hash() { return ");
+	cpp_file.push_back(itos(GDMono::get_singleton()->get_api_core_hash()) + "; }\n");
+	cpp_file.push_back("#ifdef TOOLS_ENABLED\n"
+					   "uint64_t get_editor_api_hash() { return ");
+	cpp_file.push_back(itos(GDMono::get_singleton()->get_api_editor_hash()) +
+					   "; }\n#endif // TOOLS_ENABLED\n");
+	cpp_file.push_back("void register_generated_icalls() " OPEN_BLOCK);
+
+#define ADD_INTERNAL_CALL_REGISTRATION(m_icall)                                                       \
+	{                                                                                                 \
+		cpp_file.push_back("\tmono_add_internal_call(");                                              \
+		cpp_file.push_back("\"" BINDINGS_NAMESPACE ".");                                              \
+		cpp_file.push_back(m_icall.editor_only ? CS_CLASS_NATIVECALLS_EDITOR : CS_CLASS_NATIVECALLS); \
+		cpp_file.push_back("::");                                                                     \
+		cpp_file.push_back(m_icall.name);                                                             \
+		cpp_file.push_back("\", (void*)");                                                            \
+		cpp_file.push_back(m_icall.name);                                                             \
+		cpp_file.push_back(");\n");                                                                   \
+	}
+
+	bool tools_sequence = false;
+	for (const List<InternalCall>::Element *E = core_custom_icalls.front(); E; E = E->next()) {
+
+		if (tools_sequence) {
+			if (!E->get().editor_only) {
+				tools_sequence = false;
+				cpp_file.push_back("#endif\n");
+			}
+		} else {
+			if (E->get().editor_only) {
+				cpp_file.push_back("#ifdef TOOLS_ENABLED\n");
+				tools_sequence = true;
+			}
+		}
+
+		ADD_INTERNAL_CALL_REGISTRATION(E->get());
+	}
+
+	if (tools_sequence) {
+		tools_sequence = false;
+		cpp_file.push_back("#endif\n");
+	}
+
+	cpp_file.push_back("#ifdef TOOLS_ENABLED\n");
+	for (const List<InternalCall>::Element *E = editor_custom_icalls.front(); E; E = E->next())
+		ADD_INTERNAL_CALL_REGISTRATION(E->get());
+	cpp_file.push_back("#endif // TOOLS_ENABLED\n");
+
+	for (const List<InternalCall>::Element *E = method_icalls.front(); E; E = E->next()) {
+
+		if (tools_sequence) {
+			if (!E->get().editor_only) {
+				tools_sequence = false;
+				cpp_file.push_back("#endif\n");
+			}
+		} else {
+			if (E->get().editor_only) {
+				cpp_file.push_back("#ifdef TOOLS_ENABLED\n");
+				tools_sequence = true;
+			}
+		}
+
+		ADD_INTERNAL_CALL_REGISTRATION(E->get());
+	}
+
+	if (tools_sequence) {
+		tools_sequence = false;
+		cpp_file.push_back("#endif\n");
+	}
+
+#undef ADD_INTERNAL_CALL_REGISTRATION
+
+	cpp_file.push_back(CLOSE_BLOCK "}\n");
+
+	return _save_file(path_join(p_output_dir, "mono_glue.gen.cpp"), cpp_file);
+}
+
+Error BindingsGenerator::_save_file(const String &p_path, const List<String> &p_content) {
+
+	FileAccessRef file = FileAccess::open(p_path, FileAccess::WRITE);
+
+	ERR_FAIL_COND_V(!file, ERR_FILE_CANT_WRITE);
+
+	for (const List<String>::Element *E = p_content.front(); E; E = E->next()) {
+		file->store_string(E->get());
+	}
+
+	file->close();
+
+	return OK;
+}
+
+const BindingsGenerator::TypeInterface *BindingsGenerator::_get_type_by_name_or_null(const String &p_name) {
+
+	const Map<String, TypeInterface>::Element *match = builtin_types.find(p_name);
+
+	if (match)
+		return &match->get();
+
+	match = obj_types.find(p_name);
+
+	if (match)
+		return &match->get();
+
+	return NULL;
+}
+
+const BindingsGenerator::TypeInterface *BindingsGenerator::_get_type_by_name_or_placeholder(const String &p_name) {
+
+	const TypeInterface *found = _get_type_by_name_or_null(p_name);
+
+	if (found)
+		return found;
+
+	ERR_PRINTS(String() + "Type not found. Creating placeholder: " + p_name);
+
+	const Map<String, TypeInterface>::Element *match = placeholder_types.find(p_name);
+
+	if (match)
+		return &match->get();
+
+	TypeInterface placeholder;
+	TypeInterface::create_placeholder_type(placeholder, p_name);
+
+	return &placeholder_types.insert(placeholder.name, placeholder)->get();
+}
+
+void BindingsGenerator::_populate_object_type_interfaces() {
+
+	obj_types.clear();
+
+	List<StringName> class_list;
+	ClassDB::get_class_list(&class_list);
+	class_list.sort_custom<StringName::AlphCompare>();
+
+	StringName refclass_name = String("Reference");
+
+	while (class_list.size()) {
+		StringName type_cname = class_list.front()->get();
+
+		ClassDB::APIType api_type = ClassDB::get_api_type(type_cname);
+
+		if (api_type == ClassDB::API_NONE) {
+			class_list.pop_front();
+			continue;
+		}
+
+		TypeInterface itype = TypeInterface::create_object_type(type_cname, api_type);
+
+		itype.base_name = ClassDB::get_parent_class(type_cname);
+		itype.is_singleton = ProjectSettings::get_singleton()->has_singleton(itype.proxy_name);
+		itype.is_instantiable = ClassDB::can_instance(type_cname) && !itype.is_singleton;
+		itype.is_reference = ClassDB::is_parent_class(type_cname, refclass_name);
+		itype.memory_own = itype.is_reference;
+
+		itype.c_out = "\treturn ";
+		itype.c_out += C_METHOD_UNMANAGED_GET_MANAGED;
+		itype.c_out += itype.is_reference ? "(%1.ptr());\n" : "(%1);\n";
+
+		itype.cs_in = itype.is_singleton ? BINDINGS_PTR_FIELD : "Object." CS_SMETHOD_GETINSTANCE "(%0)";
+
+		itype.c_type = "Object*";
+		itype.c_type_in = itype.c_type;
+		itype.c_type_out = "MonoObject*";
+		itype.cs_type = itype.proxy_name;
+		itype.im_type_in = "IntPtr";
+		itype.im_type_out = itype.proxy_name;
+
+		List<MethodInfo> virtual_method_list;
+		ClassDB::get_virtual_methods(type_cname, &virtual_method_list, true);
+
+		List<MethodInfo> method_list;
+		ClassDB::get_method_list(type_cname, &method_list, true);
+		method_list.sort();
+
+		for (List<MethodInfo>::Element *E = method_list.front(); E; E = E->next()) {
+			const MethodInfo &method_info = E->get();
+
+			int argc = method_info.arguments.size();
+
+			if (method_info.name.empty())
+				continue;
+
+			MethodInterface imethod;
+			imethod.name = method_info.name;
+
+			if (method_info.flags & METHOD_FLAG_VIRTUAL)
+				imethod.is_virtual = true;
+
+			PropertyInfo return_info = method_info.return_val;
+
+			MethodBind *m = imethod.is_virtual ? NULL : ClassDB::get_method(type_cname, method_info.name);
+
+			imethod.is_vararg = m && m->is_vararg();
+
+			if (!m && !imethod.is_virtual) {
+				if (virtual_method_list.find(method_info)) {
+					// A virtual method without the virtual flag. This is a special case.
+
+					// This type of method can only be found in Object derived types.
+					ERR_FAIL_COND(!itype.is_object_type);
+
+					// There is no method bind, so let's fallback to Godot's object.Call(string, params)
+					imethod.requires_object_call = true;
+
+					// The method Object.free is registered as a virtual method, but without the virtual flag.
+					// This is because this method is not supposed to be overridden, but called.
+					// We assume the return type is void.
+					imethod.return_type = "void";
+
+					// Actually, more methods like this may be added in the future,
+					// which could actually will return something differnet.
+					// Let's put this to notify us if that ever happens.
+					if (itype.name != "Object" || imethod.name != "free") {
+						WARN_PRINTS("Notification: New unexpected virtual non-overridable method found.\n"
+									"We only expected Object.free, but found " +
+									itype.name + "." + imethod.name);
+					}
+				} else {
+					ERR_PRINTS("Missing MethodBind for non-virtual method: " + itype.name + "." + imethod.name);
+				}
+			} else if (return_info.type == Variant::INT && return_info.usage & PROPERTY_USAGE_CLASS_IS_ENUM) {
+				//imethod.return_type = return_info.class_name;
+				imethod.return_type = "int";
+			} else if (return_info.class_name != StringName()) {
+				imethod.return_type = return_info.class_name;
+			} else if (return_info.hint == PROPERTY_HINT_RESOURCE_TYPE) {
+				imethod.return_type = return_info.hint_string;
+			} else if (return_info.type == Variant::NIL && return_info.usage & PROPERTY_USAGE_NIL_IS_VARIANT) {
+				imethod.return_type = "Variant";
+			} else if (return_info.type == Variant::NIL) {
+				imethod.return_type = "void";
+			} else {
+				imethod.return_type = Variant::get_type_name(return_info.type);
+			}
+
+			if (!itype.requires_collections && imethod.return_type == "Dictionary")
+				itype.requires_collections = true;
+
+			for (int i = 0; i < argc; i++) {
+				PropertyInfo arginfo = method_info.arguments[i];
+
+				ArgumentInterface iarg;
+				iarg.name = arginfo.name;
+
+				if (arginfo.type == Variant::INT && arginfo.usage & PROPERTY_USAGE_CLASS_IS_ENUM) {
+					//iarg.type = arginfo.class_name;
+					iarg.type = "int";
+				} else if (arginfo.class_name != StringName()) {
+					iarg.type = arginfo.class_name;
+				} else if (arginfo.hint == PROPERTY_HINT_RESOURCE_TYPE) {
+					iarg.type = arginfo.hint_string;
+				} else if (arginfo.type == Variant::NIL) {
+					iarg.type = "Variant";
+				} else {
+					iarg.type = Variant::get_type_name(arginfo.type);
+				}
+
+				iarg.name = escape_csharp_keyword(snake_to_camel_case(iarg.name));
+
+				if (!itype.requires_collections && iarg.type == "Dictionary")
+					itype.requires_collections = true;
+
+				if (m && m->has_default_argument(i)) {
+					_default_argument_from_variant(m->get_default_argument(i), iarg);
+				}
+
+				imethod.add_argument(iarg);
+			}
+
+			if (imethod.is_vararg) {
+				ArgumentInterface ivararg;
+				ivararg.type = "VarArg";
+				ivararg.name = "@args";
+				imethod.add_argument(ivararg);
+			}
+
+			imethod.proxy_name = escape_csharp_keyword(snake_to_pascal_case(imethod.name));
+
+			// Prevent naming the property and its enclosing type from sharing the same name
+			if (imethod.proxy_name == itype.proxy_name) {
+				if (verbose_output) {
+					WARN_PRINTS("Name of method `" + imethod.proxy_name + "` is ambiguous with the name of its class `" +
+								itype.proxy_name + "`. Renaming method to `" + imethod.proxy_name + "_`");
+				}
+
+				imethod.proxy_name += "_";
+			}
+
+			if (itype.class_doc) {
+				for (int i = 0; i < itype.class_doc->methods.size(); i++) {
+					if (itype.class_doc->methods[i].name == imethod.name) {
+						imethod.method_doc = &itype.class_doc->methods[i];
+						break;
+					}
+				}
+			}
+
+			if (!imethod.is_virtual && imethod.name[0] == '_') {
+				const Vector<DocData::PropertyDoc> &properties = itype.class_doc->properties;
+
+				for (int i = 0; i < properties.size(); i++) {
+					const DocData::PropertyDoc &prop_doc = properties[i];
+
+					if (prop_doc.getter == imethod.name || prop_doc.setter == imethod.name) {
+						imethod.is_internal = true;
+						itype.methods.push_back(imethod);
+						break;
+					}
+				}
+			} else {
+				itype.methods.push_back(imethod);
+			}
+		}
+
+		obj_types.insert(itype.name, itype);
+
+		class_list.pop_front();
+	}
+}
+
+void BindingsGenerator::_default_argument_from_variant(const Variant &p_val, ArgumentInterface &r_iarg) {
+
+	r_iarg.default_argument = p_val;
+
+	switch (p_val.get_type()) {
+		case Variant::NIL:
+			if (ClassDB::class_exists(r_iarg.type)) {
+				// Object type
+				r_iarg.default_argument = "null";
+			} else {
+				// Variant
+				r_iarg.default_argument = "null";
+			}
+			break;
+		// Atomic types
+		case Variant::BOOL:
+			r_iarg.default_argument = bool(p_val) ? "true" : "false";
+			break;
+		case Variant::INT:
+			break; // Keep it
+		case Variant::REAL:
+#ifndef REAL_T_IS_DOUBLE
+			r_iarg.default_argument += "f";
+#endif
+			break;
+		case Variant::STRING:
+		case Variant::NODE_PATH:
+			r_iarg.default_argument = "\"" + r_iarg.default_argument + "\"";
+			break;
+		case Variant::TRANSFORM:
+			if (p_val.operator Transform() == Transform())
+				r_iarg.default_argument.clear();
+			r_iarg.default_argument = "new %s(" + r_iarg.default_argument + ")";
+			r_iarg.def_param_mode = ArgumentInterface::NULLABLE_VAL;
+			break;
+		case Variant::PLANE:
+		case Variant::RECT3:
+		case Variant::COLOR:
+			r_iarg.default_argument = "new Color(1, 1, 1, 1)";
+			r_iarg.def_param_mode = ArgumentInterface::NULLABLE_VAL;
+			break;
+		case Variant::VECTOR2:
+		case Variant::RECT2:
+		case Variant::VECTOR3:
+			r_iarg.default_argument = "new %s" + r_iarg.default_argument;
+			r_iarg.def_param_mode = ArgumentInterface::NULLABLE_VAL;
+			break;
+		case Variant::OBJECT:
+			if (p_val.is_zero()) {
+				r_iarg.default_argument = "null";
+				break;
+			}
+		case Variant::DICTIONARY:
+		case Variant::_RID:
+			r_iarg.default_argument = "new %s()";
+			r_iarg.def_param_mode = ArgumentInterface::NULLABLE_REF;
+			break;
+		case Variant::ARRAY:
+		case Variant::POOL_BYTE_ARRAY:
+		case Variant::POOL_INT_ARRAY:
+		case Variant::POOL_REAL_ARRAY:
+		case Variant::POOL_STRING_ARRAY:
+		case Variant::POOL_VECTOR2_ARRAY:
+		case Variant::POOL_VECTOR3_ARRAY:
+		case Variant::POOL_COLOR_ARRAY:
+			r_iarg.default_argument = "new %s {}";
+			r_iarg.def_param_mode = ArgumentInterface::NULLABLE_REF;
+			break;
+		case Variant::TRANSFORM2D:
+		case Variant::BASIS:
+		case Variant::QUAT:
+			r_iarg.default_argument = Variant::get_type_name(p_val.get_type()) + ".Identity";
+			r_iarg.def_param_mode = ArgumentInterface::NULLABLE_VAL;
+			break;
+		default: {}
+	}
+
+	if (r_iarg.def_param_mode == ArgumentInterface::CONSTANT && r_iarg.type == "Variant" && r_iarg.default_argument != "null")
+		r_iarg.def_param_mode = ArgumentInterface::NULLABLE_REF;
+}
+
+void BindingsGenerator::_populate_builtin_type_interfaces() {
+
+	builtin_types.clear();
+
+	TypeInterface itype;
+
+#define INSERT_STRUCT_TYPE(m_type, m_type_in)                                                         \
+	{                                                                                                 \
+		itype = TypeInterface::create_value_type(#m_type);                                            \
+		itype.c_in = "\tMARSHALLED_IN(" #m_type ", %1, %1_in);\n";                                    \
+		itype.c_out = "\tMARSHALLED_OUT(" #m_type ", %1, ret_out)\n"                                  \
+					  "\treturn mono_value_box(mono_domain_get(), CACHED_CLASS_RAW(%2), ret_out);\n"; \
+		itype.c_arg_in = "&%s_in";                                                                    \
+		itype.c_type_in = m_type_in;                                                                  \
+		itype.cs_in = "ref %s";                                                                       \
+		itype.cs_out = "return (" #m_type ")%0;";                                                     \
+		itype.im_type_out = "object";                                                                 \
+		builtin_types.insert(#m_type, itype);                                                         \
+	}
+
+	INSERT_STRUCT_TYPE(Vector2, "real_t*")
+	INSERT_STRUCT_TYPE(Rect2, "real_t*")
+	INSERT_STRUCT_TYPE(Transform2D, "real_t*")
+	INSERT_STRUCT_TYPE(Vector3, "real_t*")
+	INSERT_STRUCT_TYPE(Basis, "real_t*")
+	INSERT_STRUCT_TYPE(Quat, "real_t*")
+	INSERT_STRUCT_TYPE(Transform, "real_t*")
+	INSERT_STRUCT_TYPE(Rect3, "real_t*")
+	INSERT_STRUCT_TYPE(Color, "real_t*")
+	INSERT_STRUCT_TYPE(Plane, "real_t*")
+
+#undef INSERT_STRUCT_TYPE
+
+#define INSERT_PRIMITIVE_TYPE(m_type)                      \
+	{                                                      \
+		itype = TypeInterface::create_value_type(#m_type); \
+		itype.c_arg_in = "&%s";                            \
+		itype.c_type_in = #m_type;                         \
+		itype.c_type_out = #m_type;                        \
+		itype.im_type_in = #m_type;                        \
+		itype.im_type_out = #m_type;                       \
+		builtin_types.insert(#m_type, itype);              \
+	}
+
+	INSERT_PRIMITIVE_TYPE(bool)
+	//INSERT_PRIMITIVE_TYPE(int)
+
+	// int
+	itype = TypeInterface::create_value_type("int");
+	itype.c_arg_in = "&%s_in";
+	//* ptrcall only supports int64_t and uint64_t
+	itype.c_in = "\t%0 %1_in = (%0)%1;\n";
+	itype.c_out = "\treturn (%0)%1;\n";
+	itype.c_type = "int64_t";
+	//*/
+	itype.c_type_in = itype.name;
+	itype.c_type_out = itype.name;
+	itype.im_type_in = itype.name;
+	itype.im_type_out = itype.name;
+	builtin_types.insert(itype.name, itype);
+
+#undef INSERT_PRIMITIVE_TYPE
+
+	// real_t
+	itype = TypeInterface();
+#ifdef REAL_T_IS_DOUBLE
+	itype.name = "double";
+#else
+	itype.name = "float";
+#endif
+	itype.proxy_name = itype.name;
+	itype.c_arg_in = "&%s_in";
+	//* ptrcall only supports double
+	itype.c_in = "\t%0 %1_in = (%0)%1;\n";
+	itype.c_out = "\treturn (%0)%1;\n";
+	itype.c_type = "double";
+	//*/
+	itype.c_type_in = "real_t";
+	itype.c_type_out = "real_t";
+	itype.cs_type = itype.proxy_name;
+	itype.im_type_in = itype.proxy_name;
+	itype.im_type_out = itype.proxy_name;
+	builtin_types.insert(itype.name, itype);
+
+	// String
+	itype = TypeInterface();
+	itype.name = "String";
+	itype.proxy_name = "string";
+	itype.c_in = "\t%0 %1_in = " C_METHOD_MONOSTR_TO_GODOT "(%1);\n";
+	itype.c_out = "\treturn " C_METHOD_MONOSTR_FROM_GODOT "(%1);\n";
+	itype.c_arg_in = "&%s_in";
+	itype.c_type = itype.name;
+	itype.c_type_in = "MonoString*";
+	itype.c_type_out = "MonoString*";
+	itype.cs_type = itype.proxy_name;
+	itype.im_type_in = itype.proxy_name;
+	itype.im_type_out = itype.proxy_name;
+	builtin_types.insert(itype.name, itype);
+
+	// NodePath
+	itype = TypeInterface();
+	itype.name = "NodePath";
+	itype.proxy_name = "NodePath";
+	itype.c_out = "\treturn memnew(NodePath(%1));\n";
+	itype.c_type = itype.name;
+	itype.c_type_in = itype.c_type + "*";
+	itype.c_type_out = itype.c_type + "*";
+	itype.cs_type = itype.proxy_name;
+	itype.cs_in = "NodePath." CS_SMETHOD_GETINSTANCE "(%0)";
+	itype.cs_out = "return new NodePath(%0);";
+	itype.im_type_in = "IntPtr";
+	itype.im_type_out = "IntPtr";
+	_populate_builtin_type(itype, Variant::NODE_PATH);
+	extra_members.insert(itype.name, MEMBER_BEGIN "public NodePath() : this(string.Empty) {}\n" MEMBER_BEGIN "public NodePath(string path)\n" OPEN_BLOCK_L2
+												  "this." BINDINGS_PTR_FIELD " = NativeCalls.godot_icall_NodePath_Ctor(path);\n" CLOSE_BLOCK_L2
+														  MEMBER_BEGIN "public static implicit operator NodePath(string from)\n" OPEN_BLOCK_L2 "return new NodePath(from);\n" CLOSE_BLOCK_L2
+																  MEMBER_BEGIN "public static implicit operator string(NodePath from)\n" OPEN_BLOCK_L2
+												  "return NativeCalls." ICALL_PREFIX "NodePath_operator_String(NodePath." CS_SMETHOD_GETINSTANCE "(from));\n" CLOSE_BLOCK_L2);
+	builtin_types.insert(itype.name, itype);
+
+	// RID
+	itype = TypeInterface();
+	itype.name = "RID";
+	itype.proxy_name = "RID";
+	itype.c_out = "\treturn memnew(RID(%1));\n";
+	itype.c_type = itype.name;
+	itype.c_type_in = itype.c_type + "*";
+	itype.c_type_out = itype.c_type + "*";
+	itype.cs_type = itype.proxy_name;
+	itype.cs_in = "RID." CS_SMETHOD_GETINSTANCE "(%0)";
+	itype.cs_out = "return new RID(%0);";
+	itype.im_type_in = "IntPtr";
+	itype.im_type_out = "IntPtr";
+	_populate_builtin_type(itype, Variant::_RID);
+	extra_members.insert(itype.name, MEMBER_BEGIN "internal RID()\n" OPEN_BLOCK_L2
+												  "this." BINDINGS_PTR_FIELD " = IntPtr.Zero;\n" CLOSE_BLOCK_L2);
+	builtin_types.insert(itype.name, itype);
+
+	// Variant
+	itype = TypeInterface();
+	itype.name = "Variant";
+	itype.proxy_name = "object";
+	itype.c_in = "\t%0 %1_in = " C_METHOD_MANAGED_TO_VARIANT "(%1);\n";
+	itype.c_out = "\treturn " C_METHOD_MANAGED_FROM_VARIANT "(%1);\n";
+	itype.c_arg_in = "&%s_in";
+	itype.c_type = itype.name;
+	itype.c_type_in = "MonoObject*";
+	itype.c_type_out = "MonoObject*";
+	itype.cs_type = itype.proxy_name;
+	itype.im_type_in = "object";
+	itype.im_type_out = itype.proxy_name;
+	builtin_types.insert(itype.name, itype);
+
+	// VarArg (fictitious type to represent variable arguments)
+	itype = TypeInterface();
+	itype.name = "VarArg";
+	itype.proxy_name = "object[]";
+	itype.c_in = "\t%0 %1_in = " C_METHOD_MONOARRAY_TO(Array) "(%1);\n";
+	itype.c_arg_in = "&%s_in";
+	itype.c_type = "Array";
+	itype.c_type_in = "MonoArray*";
+	itype.cs_type = "params object[]";
+	itype.im_type_in = "object[]";
+	builtin_types.insert(itype.name, itype);
+
+#define INSERT_ARRAY_FULL(m_name, m_type, m_proxy_t)                          \
+	{                                                                         \
+		itype = TypeInterface();                                              \
+		itype.name = #m_name;                                                 \
+		itype.proxy_name = #m_proxy_t "[]";                                   \
+		itype.c_in = "\t%0 %1_in = " C_METHOD_MONOARRAY_TO(m_type) "(%1);\n"; \
+		itype.c_out = "\treturn " C_METHOD_MONOARRAY_FROM(m_type) "(%1);\n";  \
+		itype.c_arg_in = "&%s_in";                                            \
+		itype.c_type = #m_type;                                               \
+		itype.c_type_in = "MonoArray*";                                       \
+		itype.c_type_out = "MonoArray*";                                      \
+		itype.cs_type = itype.proxy_name;                                     \
+		itype.im_type_in = itype.proxy_name;                                  \
+		itype.im_type_out = itype.proxy_name;                                 \
+		builtin_types.insert(itype.name, itype);                              \
+	}
+
+#define INSERT_ARRAY(m_type, m_proxy_t) INSERT_ARRAY_FULL(m_type, m_type, m_proxy_t)
+
+	INSERT_ARRAY(Array, object);
+	INSERT_ARRAY(PoolIntArray, int);
+	INSERT_ARRAY_FULL(PoolByteArray, PoolByteArray, byte);
+
+#ifdef REAL_T_IS_DOUBLE
+	INSERT_ARRAY(PoolRealArray, double);
+#else
+	INSERT_ARRAY(PoolRealArray, float);
+#endif
+
+	INSERT_ARRAY(PoolStringArray, string);
+
+	INSERT_ARRAY(PoolColorArray, Color);
+	INSERT_ARRAY(PoolVector2Array, Vector2);
+	INSERT_ARRAY(PoolVector3Array, Vector3);
+
+#undef INSERT_ARRAY
+
+	// Dictionary
+	itype = TypeInterface();
+	itype.name = "Dictionary";
+	itype.proxy_name = "Dictionary<object, object>";
+	itype.c_in = "\t%0 %1_in = " C_METHOD_MANAGED_TO_DICT "(%1);\n";
+	itype.c_out = "\treturn " C_METHOD_MANAGED_FROM_DICT "(%1);\n";
+	itype.c_arg_in = "&%s_in";
+	itype.c_type = itype.name;
+	itype.c_type_in = "MonoObject*";
+	itype.c_type_out = "MonoObject*";
+	itype.cs_type = itype.proxy_name;
+	itype.im_type_in = itype.proxy_name;
+	itype.im_type_out = itype.proxy_name;
+	builtin_types.insert(itype.name, itype);
+
+	// void (fictitious type to represent the return type of methods that do not return anything)
+	itype = TypeInterface();
+	itype.name = "void";
+	itype.proxy_name = itype.name;
+	itype.c_type = itype.name;
+	itype.c_type_in = itype.c_type;
+	itype.c_type_out = itype.c_type;
+	itype.cs_type = itype.proxy_name;
+	itype.im_type_in = itype.proxy_name;
+	itype.im_type_out = itype.proxy_name;
+	builtin_types.insert(itype.name, itype);
+
+	// Error
+	itype = TypeInterface();
+	itype.name = "Error";
+	itype.proxy_name = "Error";
+	itype.c_type = itype.name;
+	itype.c_type_in = itype.c_type;
+	itype.c_type_out = itype.c_type;
+	itype.cs_type = itype.proxy_name;
+	itype.cs_in = "(int)%0";
+	itype.cs_out = "return (Error)%s;";
+	itype.im_type_in = "int";
+	itype.im_type_out = "int";
+	builtin_types.insert(itype.name, itype);
+}
+
+void BindingsGenerator::_populate_builtin_type(TypeInterface &r_itype, Variant::Type vtype) {
+
+	Variant::CallError cerror;
+	Variant v = Variant::construct(vtype, NULL, 0, cerror);
+
+	List<MethodInfo> method_list;
+	v.get_method_list(&method_list);
+	method_list.sort();
+
+	for (List<MethodInfo>::Element *E = method_list.front(); E; E = E->next()) {
+		MethodInfo &mi = E->get();
+		MethodInterface imethod;
+
+		imethod.name = mi.name;
+		imethod.proxy_name = mi.name;
+
+		for (int i = 0; i < mi.arguments.size(); i++) {
+			ArgumentInterface iarg;
+			PropertyInfo pi = mi.arguments[i];
+
+			iarg.name = pi.name;
+
+			if (pi.type == Variant::NIL)
+				iarg.type = "Variant";
+			else
+				iarg.type = Variant::get_type_name(pi.type);
+
+			if (!r_itype.requires_collections && iarg.type == "Dictionary")
+				r_itype.requires_collections = true;
+
+			if ((mi.default_arguments.size() - mi.arguments.size() + i) >= 0)
+				_default_argument_from_variant(Variant::construct(pi.type, NULL, 0, cerror), iarg);
+
+			imethod.add_argument(iarg);
+		}
+
+		if (mi.return_val.type == Variant::NIL) {
+			if (mi.return_val.name != "")
+				imethod.return_type = "Variant";
+		} else {
+			imethod.return_type = Variant::get_type_name(mi.return_val.type);
+		}
+
+		if (!r_itype.requires_collections && imethod.return_type == "Dictionary")
+			r_itype.requires_collections = true;
+
+		if (r_itype.class_doc) {
+			for (int i = 0; i < r_itype.class_doc->methods.size(); i++) {
+				if (r_itype.class_doc->methods[i].name == imethod.name) {
+					imethod.method_doc = &r_itype.class_doc->methods[i];
+					break;
+				}
+			}
+		}
+
+		r_itype.methods.push_back(imethod);
+	}
+}
+
+BindingsGenerator::BindingsGenerator() {
+
+	EditorHelp::generate_doc();
+
+	_populate_object_type_interfaces();
+	_populate_builtin_type_interfaces();
+	_generate_header_icalls();
+
+	for (Map<String, TypeInterface>::Element *E = obj_types.front(); E; E = E->next())
+		_generate_method_icalls(E->get());
+
+	_generate_method_icalls(builtin_types["NodePath"]);
+	_generate_method_icalls(builtin_types["RID"]);
+}
+
+void BindingsGenerator::handle_cmdline_args(const List<String> &p_cmdline_args) {
+
+	int options_count = 3;
+
+	String mono_glue_option = "--generate-mono-glue";
+	String cs_core_api_option = "--generate-cs-core-api";
+	String cs_editor_api_option = "--generate-cs-editor-api";
+
+	verbose_output = true;
+
+	const List<String>::Element *elem = p_cmdline_args.front();
+
+	while (elem && options_count) {
+
+		if (elem->get() == mono_glue_option) {
+
+			const List<String>::Element *path_elem = elem->next();
+
+			if (path_elem) {
+				get_singleton().generate_glue(path_elem->get());
+				elem = elem->next();
+			} else {
+				ERR_PRINTS("--generate-mono-glue: No output directory specified");
+			}
+
+			--options_count;
+
+		} else if (elem->get() == cs_core_api_option) {
+
+			const List<String>::Element *path_elem = elem->next();
+
+			if (path_elem) {
+				get_singleton().generate_cs_core_project(path_elem->get());
+				elem = elem->next();
+			} else {
+				ERR_PRINTS(cs_core_api_option + ": No output directory specified");
+			}
+
+			--options_count;
+
+		} else if (elem->get() == cs_editor_api_option) {
+
+			const List<String>::Element *path_elem = elem->next();
+
+			if (path_elem) {
+				if (path_elem->next()) {
+					get_singleton().generate_cs_editor_project(path_elem->get(), path_elem->next()->get());
+					elem = path_elem->next();
+				} else {
+					ERR_PRINTS(cs_editor_api_option + ": No hint path for the Core API dll specified");
+				}
+			} else {
+				ERR_PRINTS(cs_editor_api_option + ": No output directory specified");
+			}
+
+			--options_count;
+		}
+
+		elem = elem->next();
+	}
+
+	verbose_output = false;
+}
+
+#endif
diff --git a/modules/mono/editor/bindings_generator.h b/modules/mono/editor/bindings_generator.h
new file mode 100644
index 0000000000..437a566556
--- /dev/null
+++ b/modules/mono/editor/bindings_generator.h
@@ -0,0 +1,429 @@
+/*************************************************************************/
+/*  bindings_generator.h                                                 */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#ifndef BINDINGS_GENERATOR_H
+#define BINDINGS_GENERATOR_H
+
+#include "class_db.h"
+#include "editor/doc/doc_data.h"
+#include "editor/editor_help.h"
+
+#ifdef DEBUG_METHODS_ENABLED
+
+#include "ustring.h"
+
+class BindingsGenerator {
+	struct ArgumentInterface {
+		enum DefaultParamMode {
+			CONSTANT,
+			NULLABLE_VAL,
+			NULLABLE_REF
+		};
+
+		String type;
+		String name;
+		String default_argument;
+		DefaultParamMode def_param_mode;
+
+		ArgumentInterface() {
+			def_param_mode = CONSTANT;
+		}
+	};
+
+	struct MethodInterface {
+		String name;
+
+		/**
+		 * Name of the C# method
+		 */
+		String proxy_name;
+
+		/**
+		 * [TypeInterface::name] of the return type
+		 */
+		String return_type;
+
+		/**
+		 * Determines if the method has a variable number of arguments (VarArg)
+		 */
+		bool is_vararg;
+
+		/**
+		 * Virtual methods ("virtual" as defined by the Godot API) are methods that by default do nothing,
+		 * but can be overridden by the user to add custom functionality.
+		 * e.g.: _ready, _process, etc.
+		 */
+		bool is_virtual;
+
+		/**
+		 * Determines if the call should fallback to Godot's object.Call(string, params) in C#.
+		 */
+		bool requires_object_call;
+
+		/**
+		 * Determines if the method visibility is `internal` (visible only to files in the same assembly).
+		 * Currently, we only use this for methods that are not meant to be exposed,
+		 * but are required by properties as getters or setters.
+		 * Methods that are not meant to be exposed are those that begin with underscore and are not virtual.
+		 */
+		bool is_internal;
+
+		List<ArgumentInterface> arguments;
+
+		const DocData::MethodDoc *method_doc;
+
+		void add_argument(const ArgumentInterface &argument) {
+			arguments.push_back(argument);
+		}
+
+		MethodInterface() {
+			return_type = "void";
+			is_vararg = false;
+			is_virtual = false;
+			requires_object_call = false;
+			is_internal = false;
+			method_doc = NULL;
+		}
+	};
+
+	struct TypeInterface {
+		/**
+		 * Identifier name for this type.
+		 * Also used to format [c_out].
+		 */
+		String name;
+
+		/**
+		 * Identifier name of the base class.
+		 */
+		String base_name;
+
+		/**
+		 * Name of the C# class
+		 */
+		String proxy_name;
+
+		ClassDB::APIType api_type;
+
+		bool is_object_type;
+		bool is_singleton;
+		bool is_reference;
+
+		/**
+		 * Used only by Object-derived types.
+		 * Determines if this type is not virtual (incomplete).
+		 * e.g.: CanvasItem cannot be instantiated.
+		 */
+		bool is_instantiable;
+
+		/**
+		 * Used only by Object-derived types.
+		 * Determines if the C# class owns the native handle and must free it somehow when disposed.
+		 * e.g.: Reference types must notify when the C# instance is disposed, for proper refcounting.
+		 */
+		bool memory_own;
+
+		/**
+		 * Determines if the file must have a using directive for System.Collections.Generic
+		 * e.g.: When the generated class makes use of Dictionary
+		 */
+		bool requires_collections;
+
+		// !! The comments of the following fields make reference to other fields via square brackets, e.g.: [field_name]
+		// !! When renaming those fields, make sure to rename their references in the comments
+
+		// --- C INTERFACE ---
+
+		static const char *DEFAULT_VARARG_C_IN;
+
+		/**
+		 * One or more statements that manipulate the parameter before being passed as argument of a ptrcall.
+		 * If the statement adds a local that must be passed as the argument instead of the parameter,
+		 * the name of that local must be specified with [c_arg_in].
+		 * For variadic methods, this field is required and, if empty, [DEFAULT_VARARG_C_IN] is used instead.
+		 * Formatting elements:
+		 * %0: [c_type] of the parameter
+		 * %1: name of the parameter
+		 */
+		String c_in;
+
+		/**
+		 * Determines the name of the variable that will be passed as argument to a ptrcall.
+		 * By default the value equals the name of the parameter,
+		 * this varies for types that require special manipulation via [c_in].
+		 * Formatting elements:
+		 * %0 or %s: name of the parameter
+		 */
+		String c_arg_in;
+
+		/**
+		 * One or more statements that determine how a variable of this type is returned from a function.
+		 * It must contain the return statement(s).
+		 * Formatting elements:
+		 * %0: [c_type_out] of the return type
+		 * %1: name of the variable to be returned
+		 * %2: [name] of the return type
+		 */
+		String c_out;
+
+		/**
+		 * The actual expected type, as seen (in most cases) in Variant copy constructors
+		 * Used for the type of the return variable and to format [c_in].
+		 * The value must be the following depending of the type:
+		 * Object-derived types: Object*
+		 * Other types: [name]
+		 * -- Exceptions --
+		 * VarArg (fictitious type to represent variable arguments): Array
+		 * float: double (because ptrcall only supports double)
+		 * int: int64_t (because ptrcall only supports int64_t and uint64_t)
+		 * Reference types override this for the type of the return variable: Ref<Reference>
+		 */
+		String c_type;
+
+		/**
+		 * Determines the type used for parameters in function signatures.
+		 */
+		String c_type_in;
+
+		/**
+		 * Determines the return type used for function signatures.
+		 * Also used to construct a default value to return in case of errors,
+		 * and to format [c_out].
+		 */
+		String c_type_out;
+
+		// --- C# INTERFACE ---
+
+		/**
+		 * An expression that overrides the way the parameter is passed to the internal call.
+		 * If empty, the parameter is passed as is.
+		 * Formatting elements:
+		 * %0 or %s: name of the parameter
+		 */
+		String cs_in;
+
+		/**
+		 * One or more statements that determine how a variable of this type is returned from a method.
+		 * It must contain the return statement(s).
+		 * Formatting elements:
+		 * %0 or %s: name of the variable to be returned
+		 */
+		String cs_out;
+
+		/**
+		 * Type used for method signatures, both for parameters and the return type.
+		 * Same as [proxy_name] except for variable arguments (VarArg).
+		 */
+		String cs_type;
+
+		/**
+		 * Type used for parameters of internal call methods.
+		 */
+		String im_type_in;
+
+		/**
+		 * Type used for the return type of internal call methods.
+		 * If [cs_out] is not empty and the method return type is not void,
+		 * it is also used for the type of the return variable.
+		 */
+		String im_type_out;
+
+		const DocData::ClassDoc *class_doc;
+
+		List<MethodInterface> methods;
+
+		const MethodInterface *find_method_by_name(const String &p_name) const {
+
+			for (const List<MethodInterface>::Element *E = methods.front(); E; E = E->next()) {
+				if (E->get().name == p_name)
+					return &E->get();
+			}
+
+			return NULL;
+		}
+
+		static TypeInterface create_value_type(const String &p_name) {
+			TypeInterface itype;
+
+			itype.name = p_name;
+			itype.proxy_name = p_name;
+
+			itype.c_type = itype.name;
+			itype.c_type_in = "void*";
+			itype.c_type_out = "MonoObject*";
+			itype.cs_type = itype.proxy_name;
+			itype.im_type_in = "ref " + itype.proxy_name;
+			itype.im_type_out = itype.proxy_name;
+			itype.class_doc = &EditorHelp::get_doc_data()->class_list[itype.proxy_name];
+
+			return itype;
+		}
+
+		static TypeInterface create_object_type(const String &p_name, ClassDB::APIType p_api_type) {
+			TypeInterface itype;
+
+			itype.name = p_name;
+			itype.proxy_name = p_name.begins_with("_") ? p_name.substr(1, p_name.length()) : p_name;
+			itype.api_type = p_api_type;
+			itype.is_object_type = true;
+			itype.class_doc = &EditorHelp::get_doc_data()->class_list[itype.proxy_name];
+
+			return itype;
+		}
+
+		static void create_placeholder_type(TypeInterface &r_itype, const String &p_name) {
+			r_itype.name = p_name;
+			r_itype.proxy_name = p_name;
+
+			r_itype.c_type = r_itype.name;
+			r_itype.c_type_in = "MonoObject*";
+			r_itype.c_type_out = "MonoObject*";
+			r_itype.cs_type = r_itype.proxy_name;
+			r_itype.im_type_in = r_itype.proxy_name;
+			r_itype.im_type_out = r_itype.proxy_name;
+		}
+
+		TypeInterface() {
+
+			api_type = ClassDB::API_NONE;
+
+			is_object_type = false;
+			is_singleton = false;
+			is_reference = false;
+			is_instantiable = false;
+
+			memory_own = false;
+			requires_collections = false;
+
+			c_arg_in = "%s";
+
+			class_doc = NULL;
+		}
+	};
+
+	struct InternalCall {
+		String name;
+		String im_type_out; // Return type for the C# method declaration. Also used as companion of [unique_siq]
+		String im_sig; // Signature for the C# method declaration
+		String unique_sig; // Unique signature to avoid duplicates in containers
+		bool editor_only;
+
+		InternalCall() {}
+
+		InternalCall(const String &p_name, const String &p_im_type_out, const String &p_im_sig = String(), const String &p_unique_sig = String()) {
+			name = p_name;
+			im_type_out = p_im_type_out;
+			im_sig = p_im_sig;
+			unique_sig = p_unique_sig;
+			editor_only = false;
+		}
+
+		InternalCall(ClassDB::APIType api_type, const String &p_name, const String &p_im_type_out, const String &p_im_sig = String(), const String &p_unique_sig = String()) {
+			name = p_name;
+			im_type_out = p_im_type_out;
+			im_sig = p_im_sig;
+			unique_sig = p_unique_sig;
+			editor_only = api_type == ClassDB::API_EDITOR;
+		}
+
+		inline bool operator==(const InternalCall &p_a) const {
+			return p_a.unique_sig == unique_sig;
+		}
+	};
+
+	static bool verbose_output;
+
+	Map<String, TypeInterface> placeholder_types;
+	Map<String, TypeInterface> builtin_types;
+	Map<String, TypeInterface> obj_types;
+
+	Map<String, String> extra_members;
+
+	List<InternalCall> method_icalls;
+	Map<const MethodInterface *, const InternalCall *> method_icalls_map;
+
+	List<InternalCall> core_custom_icalls;
+	List<InternalCall> editor_custom_icalls;
+
+	const List<InternalCall>::Element *find_icall_by_name(const String &p_name, const List<InternalCall> &p_list) {
+
+		const List<InternalCall>::Element *it = p_list.front();
+		while (it) {
+			if (it->get().name == p_name) return it;
+			it = it->next();
+		}
+		return NULL;
+	}
+
+	inline String get_unique_sig(const TypeInterface &p_type) {
+		if (p_type.is_reference)
+			return "Ref";
+		else if (p_type.is_object_type)
+			return "Obj";
+
+		return p_type.name;
+	}
+
+	void _generate_header_icalls();
+	void _generate_method_icalls(const TypeInterface &p_itype);
+
+	const TypeInterface *_get_type_by_name_or_null(const String &p_name);
+	const TypeInterface *_get_type_by_name_or_placeholder(const String &p_name);
+
+	void _default_argument_from_variant(const Variant &p_var, ArgumentInterface &r_iarg);
+	void _populate_builtin_type(TypeInterface &r_type, Variant::Type vtype);
+
+	void _populate_object_type_interfaces();
+	void _populate_builtin_type_interfaces();
+
+	Error _generate_cs_type(const TypeInterface &itype, const String &p_output_file);
+
+	Error _save_file(const String &path, const List<String> &content);
+
+	BindingsGenerator();
+
+	BindingsGenerator(const BindingsGenerator &);
+	BindingsGenerator &operator=(const BindingsGenerator &);
+
+public:
+	Error generate_cs_core_project(const String &p_output_dir, bool p_verbose_output = true);
+	Error generate_cs_editor_project(const String &p_output_dir, const String &p_core_dll_path, bool p_verbose_output = true);
+	Error generate_glue(const String &p_output_dir);
+
+	static BindingsGenerator &get_singleton() {
+		static BindingsGenerator singleton;
+		return singleton;
+	}
+
+	static void handle_cmdline_args(const List<String> &p_cmdline_args);
+};
+
+#endif
+
+#endif // BINDINGS_GENERATOR_H
diff --git a/modules/mono/editor/csharp_project.cpp b/modules/mono/editor/csharp_project.cpp
new file mode 100644
index 0000000000..bde5f0fd0b
--- /dev/null
+++ b/modules/mono/editor/csharp_project.cpp
@@ -0,0 +1,120 @@
+/*************************************************************************/
+/*  csharp_project.cpp                                                   */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#include "csharp_project.h"
+
+#include "os/os.h"
+#include "project_settings.h"
+
+#include "../mono_gd/gd_mono_class.h"
+#include "../mono_gd/gd_mono_marshal.h"
+
+namespace CSharpProject {
+
+String generate_core_api_project(const String &p_dir, const Vector<String> &p_files) {
+
+	_GDMONO_SCOPE_DOMAIN_(TOOLS_DOMAIN)
+
+	GDMonoClass *klass = GDMono::get_singleton()->get_editor_tools_assembly()->get_class("GodotSharpTools.Project", "ProjectGenerator");
+
+	Variant dir = p_dir;
+	Variant compile_items = p_files;
+	const Variant *args[2] = { &dir, &compile_items };
+	MonoObject *ex = NULL;
+	MonoObject *ret = klass->get_method("GenCoreApiProject", 2)->invoke(NULL, args, &ex);
+
+	if (ex) {
+		mono_print_unhandled_exception(ex);
+		ERR_FAIL_V(String());
+	}
+
+	return ret ? GDMonoMarshal::mono_string_to_godot((MonoString *)ret) : "";
+}
+
+String generate_editor_api_project(const String &p_dir, const String &p_core_dll_path, const Vector<String> &p_files) {
+
+	_GDMONO_SCOPE_DOMAIN_(TOOLS_DOMAIN)
+
+	GDMonoClass *klass = GDMono::get_singleton()->get_editor_tools_assembly()->get_class("GodotSharpTools.Project", "ProjectGenerator");
+
+	Variant dir = p_dir;
+	Variant core_dll_path = p_core_dll_path;
+	Variant compile_items = p_files;
+	const Variant *args[3] = { &dir, &core_dll_path, &compile_items };
+	MonoObject *ex = NULL;
+	MonoObject *ret = klass->get_method("GenEditorApiProject", 3)->invoke(NULL, args, &ex);
+
+	if (ex) {
+		mono_print_unhandled_exception(ex);
+		ERR_FAIL_V(String());
+	}
+
+	return ret ? GDMonoMarshal::mono_string_to_godot((MonoString *)ret) : "";
+}
+
+String generate_game_project(const String &p_dir, const String &p_name, const Vector<String> &p_files) {
+
+	_GDMONO_SCOPE_DOMAIN_(TOOLS_DOMAIN)
+
+	GDMonoClass *klass = GDMono::get_singleton()->get_editor_tools_assembly()->get_class("GodotSharpTools.Project", "ProjectGenerator");
+
+	Variant dir = p_dir;
+	Variant name = p_name;
+	Variant compile_items = p_files;
+	const Variant *args[3] = { &dir, &name, &compile_items };
+	MonoObject *ex = NULL;
+	MonoObject *ret = klass->get_method("GenGameProject", 3)->invoke(NULL, args, &ex);
+
+	if (ex) {
+		mono_print_unhandled_exception(ex);
+		ERR_FAIL_V(String());
+	}
+
+	return ret ? GDMonoMarshal::mono_string_to_godot((MonoString *)ret) : "";
+}
+
+void add_item(const String &p_project_path, const String &p_item_type, const String &p_include) {
+
+	_GDMONO_SCOPE_DOMAIN_(TOOLS_DOMAIN)
+
+	GDMonoClass *klass = GDMono::get_singleton()->get_editor_tools_assembly()->get_class("GodotSharpTools.Project", "ProjectUtils");
+
+	Variant project_path = p_project_path;
+	Variant item_type = p_item_type;
+	Variant include = p_include;
+	const Variant *args[3] = { &project_path, &item_type, &include };
+	MonoObject *ex = NULL;
+	klass->get_method("AddItemToProjectChecked", 3)->invoke(NULL, args, &ex);
+
+	if (ex) {
+		mono_print_unhandled_exception(ex);
+		ERR_FAIL();
+	}
+}
+} // CSharpProject
diff --git a/modules/mono/editor/csharp_project.h b/modules/mono/editor/csharp_project.h
new file mode 100644
index 0000000000..4832d2251e
--- /dev/null
+++ b/modules/mono/editor/csharp_project.h
@@ -0,0 +1,44 @@
+/*************************************************************************/
+/*  csharp_project.h                                                     */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#ifndef CSHARP_PROJECT_H
+#define CSHARP_PROJECT_H
+
+#include "ustring.h"
+
+namespace CSharpProject {
+
+String generate_core_api_project(const String &p_dir, const Vector<String> &p_files = Vector<String>());
+String generate_editor_api_project(const String &p_dir, const String &p_core_dll_path, const Vector<String> &p_files = Vector<String>());
+String generate_game_project(const String &p_dir, const String &p_name, const Vector<String> &p_files = Vector<String>());
+
+void add_item(const String &p_project_path, const String &p_item_type, const String &p_include);
+}
+
+#endif // CSHARP_PROJECT_H
diff --git a/modules/mono/editor/godotsharp_builds.cpp b/modules/mono/editor/godotsharp_builds.cpp
new file mode 100644
index 0000000000..e7d9c83421
--- /dev/null
+++ b/modules/mono/editor/godotsharp_builds.cpp
@@ -0,0 +1,440 @@
+/*************************************************************************/
+/*  godotsharp_builds.cpp                                                */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#include "godotsharp_builds.h"
+
+#include "../godotsharp_dirs.h"
+#include "../mono_gd/gd_mono_class.h"
+#include "../mono_gd/gd_mono_marshal.h"
+#include "../utils/path_utils.h"
+#include "bindings_generator.h"
+#include "godotsharp_editor.h"
+#include "main/main.h"
+
+void godot_icall_BuildInstance_ExitCallback(MonoString *p_solution, MonoString *p_config, int p_exit_code) {
+
+	String solution = GDMonoMarshal::mono_string_to_godot(p_solution);
+	String config = GDMonoMarshal::mono_string_to_godot(p_config);
+	GodotSharpBuilds::get_singleton()->build_exit_callback(MonoBuildInfo(solution, config), p_exit_code);
+}
+
+MonoString *godot_icall_BuildInstance_get_MSBuildPath() {
+
+	GodotSharpBuilds::BuildTool build_tool = GodotSharpBuilds::BuildTool(int(EditorSettings::get_singleton()->get("mono/builds/build_tool")));
+
+#ifdef WINDOWS_ENABLED
+	switch (build_tool) {
+		case GodotSharpBuilds::MSBUILD: {
+			static String msbuild_tools_path = MonoRegUtils::find_msbuild_tools_path();
+
+			if (msbuild_tools_path.length()) {
+				if (!msbuild_tools_path.ends_with("\\"))
+					msbuild_tools_path += "\\";
+
+				return GDMonoMarshal::mono_string_from_godot(msbuild_tools_path + "MSBuild.exe");
+			}
+
+			OS::get_singleton()->print("Cannot find System's MSBuild. Trying with Mono's...\n");
+		}
+		case GodotSharpBuilds::MSBUILD_MONO: {
+			String msbuild_path = GDMono::get_singleton()->get_mono_reg_info().bin_dir.plus_file("msbuild.bat");
+
+			if (!FileAccess::exists(msbuild_path)) {
+				WARN_PRINTS("Cannot find msbuild ('mono/builds/build_tool'). Tried with path: " + msbuild_path);
+			}
+
+			return GDMonoMarshal::mono_string_from_godot(msbuild_path);
+		}
+		case GodotSharpBuilds::XBUILD: {
+			String xbuild_path = GDMono::get_singleton()->get_mono_reg_info().bin_dir.plus_file("xbuild.bat");
+
+			if (!FileAccess::exists(xbuild_path)) {
+				WARN_PRINTS("Cannot find xbuild ('mono/builds/build_tool'). Tried with path: " + xbuild_path);
+			}
+
+			return GDMonoMarshal::mono_string_from_godot(xbuild_path);
+		}
+		default:
+			ERR_EXPLAIN("You don't deserve to live");
+			CRASH_NOW();
+	}
+#else
+	static bool msbuild_found = path_which("msbuild").length();
+
+	if (build_tool != GodotSharpBuilds::XBUILD && !msbuild_found) {
+		WARN_PRINT("Cannot find msbuild ('mono/builds/build_tool').");
+	}
+
+	return GDMonoMarshal::mono_string_from_godot(build_tool != GodotSharpBuilds::XBUILD ? "msbuild" : "xbuild");
+#endif
+}
+
+void GodotSharpBuilds::_register_internal_calls() {
+
+	mono_add_internal_call("GodotSharpTools.Build.BuildSystem::godot_icall_BuildInstance_ExitCallback", (void *)godot_icall_BuildInstance_ExitCallback);
+	mono_add_internal_call("GodotSharpTools.Build.BuildInstance::godot_icall_BuildInstance_get_MSBuildPath", (void *)godot_icall_BuildInstance_get_MSBuildPath);
+}
+
+void GodotSharpBuilds::show_build_error_dialog(const String &p_message) {
+
+	GodotSharpEditor::get_singleton()->show_error_dialog(p_message, "Build error");
+	MonoBottomPanel::get_singleton()->show_build_tab();
+}
+
+bool GodotSharpBuilds::build_api_sln(const String &p_name, const String &p_api_sln_dir, const String &p_config) {
+
+	String api_sln_file = p_api_sln_dir.plus_file(p_name + ".sln");
+	String api_assembly_dir = p_api_sln_dir.plus_file("bin").plus_file(p_config);
+	String api_assembly_file = api_assembly_dir.plus_file(p_name + ".dll");
+
+	if (!FileAccess::exists(api_assembly_file)) {
+		MonoBuildInfo api_build_info(api_sln_file, p_config);
+		api_build_info.custom_props.push_back("NoWarn=1591"); // Ignore missing documentation warnings
+
+		if (!GodotSharpBuilds::get_singleton()->build(api_build_info)) {
+			show_build_error_dialog("Failed to build " + p_name + " solution.");
+			return false;
+		}
+	}
+
+	return true;
+}
+
+bool GodotSharpBuilds::copy_api_assembly(const String &p_src_dir, const String &p_dst_dir, const String &p_assembly_name) {
+
+	String assembly_file = p_assembly_name + ".dll";
+	String assembly_src = p_src_dir.plus_file(assembly_file);
+	String assembly_dst = p_dst_dir.plus_file(assembly_file);
+
+	if (!FileAccess::exists(assembly_dst) || FileAccess::get_modified_time(assembly_src) > FileAccess::get_modified_time(assembly_dst)) {
+		DirAccess *da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
+
+		String xml_file = p_assembly_name + ".xml";
+		if (da->copy(p_src_dir.plus_file(xml_file), p_dst_dir.plus_file(xml_file)) != OK)
+			WARN_PRINTS("Failed to copy " + xml_file);
+
+		String pdb_file = p_assembly_name + ".pdb";
+		if (da->copy(p_src_dir.plus_file(pdb_file), p_dst_dir.plus_file(pdb_file)) != OK)
+			WARN_PRINTS("Failed to copy " + pdb_file);
+
+		Error err = da->copy(assembly_src, assembly_dst);
+
+		memdelete(da);
+
+		if (err != OK) {
+			show_build_error_dialog("Failed to copy " API_ASSEMBLY_NAME ".dll");
+			return false;
+		}
+	}
+
+	return true;
+}
+
+bool GodotSharpBuilds::make_api_sln(GodotSharpBuilds::APIType p_api_type) {
+
+	String api_name = p_api_type == API_CORE ? API_ASSEMBLY_NAME : EDITOR_API_ASSEMBLY_NAME;
+	String api_build_config = "Release";
+
+	EditorProgress pr("mono_build_release_" + api_name, "Building " + api_name + " solution...", 4);
+
+	pr.step("Generating " + api_name + " solution");
+
+	uint64_t core_hash = GDMono::get_singleton()->get_api_core_hash();
+	uint64_t editor_hash = GDMono::get_singleton()->get_api_editor_hash();
+
+	String core_api_sln_dir = GodotSharpDirs::get_mono_solutions_dir().plus_file(API_ASSEMBLY_NAME "_" + itos(core_hash));
+	String editor_api_sln_dir = GodotSharpDirs::get_mono_solutions_dir().plus_file(EDITOR_API_ASSEMBLY_NAME "_" + itos(editor_hash));
+
+	String api_sln_dir = p_api_type == API_CORE ? core_api_sln_dir : editor_api_sln_dir;
+	String api_sln_file = api_sln_dir.plus_file(api_name + ".sln");
+
+	if (!DirAccess::exists(api_sln_dir) || !FileAccess::exists(api_sln_file)) {
+		String core_api_assembly;
+
+		if (p_api_type == API_EDITOR) {
+			core_api_assembly = core_api_sln_dir.plus_file("bin")
+										.plus_file(api_build_config)
+										.plus_file(API_ASSEMBLY_NAME ".dll");
+		}
+
+#ifndef DEBUG_METHODS_ENABLED
+#error "How am I supposed to generate the bindings?"
+#endif
+
+		BindingsGenerator &gen = BindingsGenerator::get_singleton();
+		bool gen_verbose = OS::get_singleton()->is_stdout_verbose();
+
+		Error err = p_api_type == API_CORE ?
+							gen.generate_cs_core_project(api_sln_dir, gen_verbose) :
+							gen.generate_cs_editor_project(api_sln_dir, core_api_assembly, gen_verbose);
+
+		if (err != OK) {
+			show_build_error_dialog("Failed to generate " + api_name + " solution. Error: " + itos(err));
+			return false;
+		}
+	}
+
+	pr.step("Building " + api_name + " solution");
+
+	if (!GodotSharpBuilds::build_api_sln(api_name, api_sln_dir, api_build_config))
+		return false;
+
+	pr.step("Copying " + api_name + " assembly");
+
+	String res_assemblies_dir = GodotSharpDirs::get_res_assemblies_dir();
+
+	// Create assemblies directory if needed
+	if (!DirAccess::exists(res_assemblies_dir)) {
+		DirAccess *da = DirAccess::create_for_path(res_assemblies_dir);
+		Error err = da->make_dir_recursive(res_assemblies_dir);
+		memdelete(da);
+
+		if (err != OK) {
+			show_build_error_dialog("Failed to create assemblies directory. Error: " + itos(err));
+			return false;
+		}
+	}
+
+	// Copy the built assembly to the assemblies directory
+	String api_assembly_dir = api_sln_dir.plus_file("bin").plus_file(api_build_config);
+	if (!GodotSharpBuilds::copy_api_assembly(api_assembly_dir, res_assemblies_dir, api_name))
+		return false;
+
+	pr.step("Done");
+
+	return true;
+}
+
+bool godotsharp_build_callback() {
+
+	if (!FileAccess::exists(GodotSharpDirs::get_project_sln_path()))
+		return true; // No solution to build
+
+	if (!GodotSharpBuilds::make_api_sln(GodotSharpBuilds::API_CORE))
+		return false;
+
+	if (!GodotSharpBuilds::make_api_sln(GodotSharpBuilds::API_EDITOR))
+		return false;
+
+	EditorProgress pr("mono_project_debug_build", "Building project solution...", 2);
+
+	pr.step("Building project solution");
+
+	MonoBuildInfo build_info(GodotSharpDirs::get_project_sln_path(), "Tools");
+	if (!GodotSharpBuilds::get_singleton()->build(build_info)) {
+		GodotSharpBuilds::show_build_error_dialog("Failed to build project solution");
+		return false;
+	}
+
+	pr.step("Done");
+
+	return true;
+}
+
+GodotSharpBuilds *GodotSharpBuilds::singleton = NULL;
+
+void GodotSharpBuilds::build_exit_callback(const MonoBuildInfo &p_build_info, int p_exit_code) {
+
+	BuildProcess *match = builds.getptr(p_build_info);
+	ERR_FAIL_COND(!match);
+
+	BuildProcess &bp = *match;
+	bp.on_exit(p_exit_code);
+}
+
+void GodotSharpBuilds::restart_build(MonoBuildTab *p_build_tab) {
+}
+
+void GodotSharpBuilds::stop_build(MonoBuildTab *p_build_tab) {
+}
+
+bool GodotSharpBuilds::build(const MonoBuildInfo &p_build_info) {
+
+	BuildProcess *match = builds.getptr(p_build_info);
+
+	if (match) {
+		BuildProcess &bp = *match;
+		bp.start(true);
+		return bp.exit_code == 0;
+	} else {
+		BuildProcess bp = BuildProcess(p_build_info);
+		bp.start(true);
+		builds.set(p_build_info, bp);
+		return bp.exit_code == 0;
+	}
+}
+
+bool GodotSharpBuilds::build_async(const MonoBuildInfo &p_build_info, GodotSharpBuild_ExitCallback p_callback) {
+
+	BuildProcess *match = builds.getptr(p_build_info);
+
+	if (match) {
+		BuildProcess &bp = *match;
+		bp.start();
+		return !bp.exited; // failed to start
+	} else {
+		BuildProcess bp = BuildProcess(p_build_info, p_callback);
+		bp.start();
+		builds.set(p_build_info, bp);
+		return !bp.exited; // failed to start
+	}
+}
+
+GodotSharpBuilds::GodotSharpBuilds() {
+
+	singleton = this;
+
+	EditorNode::get_singleton()->add_build_callback(&godotsharp_build_callback);
+
+	// Build tool settings
+	EditorSettings *ed_settings = EditorSettings::get_singleton();
+	if (!ed_settings->has("mono/builds/build_tool")) {
+		ed_settings->set("mono/builds/build_tool", MSBUILD);
+	}
+	ed_settings->add_property_hint(PropertyInfo(Variant::INT, "mono/builds/build_tool", PROPERTY_HINT_ENUM, "MSBuild (System),MSBuild (Mono),xbuild"));
+}
+
+GodotSharpBuilds::~GodotSharpBuilds() {
+
+	singleton = NULL;
+}
+
+void GodotSharpBuilds::BuildProcess::on_exit(int p_exit_code) {
+
+	exited = true;
+	exit_code = p_exit_code;
+	build_tab->on_build_exit(p_exit_code == 0 ? MonoBuildTab::RESULT_SUCCESS : MonoBuildTab::RESULT_ERROR);
+	build_instance.unref();
+
+	if (exit_callback)
+		exit_callback(exit_code);
+}
+
+void GodotSharpBuilds::BuildProcess::start(bool p_blocking) {
+
+	_GDMONO_SCOPE_DOMAIN_(TOOLS_DOMAIN)
+
+	exit_code = -1;
+
+	String logs_dir = GodotSharpDirs::get_build_logs_dir().plus_file(build_info.solution.md5_text() + "_" + build_info.configuration);
+
+	if (build_tab) {
+		build_tab->on_build_start();
+	} else {
+		build_tab = memnew(MonoBuildTab(build_info, logs_dir));
+		MonoBottomPanel::get_singleton()->add_build_tab(build_tab);
+	}
+
+	if (p_blocking) {
+		// Required in order to update the build tasks list
+		Main::iteration();
+	}
+
+	if (!exited) {
+		ERR_PRINT("BuildProcess::start called, but process still running");
+		exited = true;
+		build_tab->on_build_exec_failed("!exited");
+		return;
+	}
+
+	exited = false;
+
+	// Remove old issues file
+
+	String issues_file = "msbuild_issues.csv";
+	DirAccessRef d = DirAccess::create_for_path(logs_dir);
+	if (d->file_exists(issues_file)) {
+		Error err = d->remove(issues_file);
+		if (err != OK) {
+			ERR_PRINTS("Cannot remove file: " + logs_dir.plus_file(issues_file));
+			exited = true;
+			build_tab->on_build_exec_failed("Cannot remove file: " + issues_file);
+			return;
+		}
+	}
+
+	GDMonoClass *klass = GDMono::get_singleton()->get_editor_tools_assembly()->get_class("GodotSharpTools.Build", "BuildInstance");
+
+	MonoObject *mono_object = mono_object_new(mono_domain_get(), klass->get_raw());
+
+	// Construct
+
+	Variant solution = build_info.solution;
+	Variant config = build_info.configuration;
+
+	const Variant *ctor_args[2] = { &solution, &config };
+
+	MonoObject *ex = NULL;
+	GDMonoMethod *ctor = klass->get_method(".ctor", 2);
+	ctor->invoke(mono_object, ctor_args, &ex);
+
+	if (ex) {
+		exited = true;
+		build_tab->on_build_exec_failed("The build constructor threw an exception.\n" + GDMonoUtils::get_exception_name_and_message(ex));
+		ERR_FAIL();
+	}
+
+	// Call Build
+
+	Variant logger_assembly = OS::get_singleton()->get_executable_path().get_base_dir().plus_file(EDITOR_TOOLS_ASSEMBLY_NAME) + ".dll";
+	Variant logger_output_dir = logs_dir;
+	Variant custom_props = build_info.custom_props;
+
+	const Variant *args[3] = { &logger_assembly, &logger_output_dir, &custom_props };
+
+	ex = NULL;
+	GDMonoMethod *build_method = klass->get_method(p_blocking ? "Build" : "BuildAsync", 3);
+	build_method->invoke(mono_object, args, &ex);
+
+	if (ex) {
+		exited = true;
+		build_tab->on_build_exec_failed("The build method threw an exception.\n" + GDMonoUtils::get_exception_name_and_message(ex));
+		ERR_FAIL();
+	}
+
+	// Build returned
+
+	if (p_blocking) {
+		exited = true;
+		exit_code = klass->get_field("exitCode")->get_int_value(mono_object);
+		build_tab->on_build_exit(exit_code == 0 ? MonoBuildTab::RESULT_SUCCESS : MonoBuildTab::RESULT_ERROR);
+	} else {
+		build_instance = MonoGCHandle::create_strong(mono_object);
+		exited = false;
+	}
+}
+
+GodotSharpBuilds::BuildProcess::BuildProcess(const MonoBuildInfo &p_build_info, GodotSharpBuild_ExitCallback p_callback) {
+
+	build_info = p_build_info;
+	build_tab = NULL;
+	exit_callback = p_callback;
+	exited = true;
+	exit_code = -1;
+}
diff --git a/modules/mono/editor/godotsharp_builds.h b/modules/mono/editor/godotsharp_builds.h
new file mode 100644
index 0000000000..6d5fa3b44a
--- /dev/null
+++ b/modules/mono/editor/godotsharp_builds.h
@@ -0,0 +1,96 @@
+/*************************************************************************/
+/*  godotsharp_builds.h                                                  */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#ifndef GODOTSHARP_BUILDS_H
+#define GODOTSHARP_BUILDS_H
+
+#include "mono_bottom_panel.h"
+#include "mono_build_info.h"
+
+typedef void (*GodotSharpBuild_ExitCallback)(int);
+
+class GodotSharpBuilds {
+
+private:
+	struct BuildProcess {
+		Ref<MonoGCHandle> build_instance;
+		MonoBuildInfo build_info;
+		MonoBuildTab *build_tab;
+		GodotSharpBuild_ExitCallback exit_callback;
+		bool exited;
+		int exit_code;
+
+		void on_exit(int p_exit_code);
+		void start(bool p_blocking = false);
+
+		BuildProcess() {}
+		BuildProcess(const MonoBuildInfo &p_build_info, GodotSharpBuild_ExitCallback p_callback = NULL);
+	};
+
+	HashMap<MonoBuildInfo, BuildProcess, MonoBuildInfo::Hasher> builds;
+
+	static GodotSharpBuilds *singleton;
+
+	friend class GDMono;
+	static void _register_internal_calls();
+
+public:
+	enum APIType {
+		API_CORE,
+		API_EDITOR
+	};
+
+	enum BuildTool {
+		MSBUILD,
+		MSBUILD_MONO,
+		XBUILD
+	};
+
+	_FORCE_INLINE_ static GodotSharpBuilds *get_singleton() { return singleton; }
+
+	static void show_build_error_dialog(const String &p_message);
+
+	void build_exit_callback(const MonoBuildInfo &p_build_info, int p_exit_code);
+
+	void restart_build(MonoBuildTab *p_build_tab);
+	void stop_build(MonoBuildTab *p_build_tab);
+
+	bool build(const MonoBuildInfo &p_build_info);
+	bool build_async(const MonoBuildInfo &p_build_info, GodotSharpBuild_ExitCallback p_callback = NULL);
+
+	static bool build_api_sln(const String &p_name, const String &p_api_sln_dir, const String &p_config);
+	static bool copy_api_assembly(const String &p_src_dir, const String &p_dst_dir, const String &p_assembly_name);
+
+	static bool make_api_sln(APIType p_api_type);
+
+	GodotSharpBuilds();
+	~GodotSharpBuilds();
+};
+
+#endif // GODOTSHARP_BUILDS_H
diff --git a/modules/mono/editor/godotsharp_editor.cpp b/modules/mono/editor/godotsharp_editor.cpp
new file mode 100644
index 0000000000..5aaf029495
--- /dev/null
+++ b/modules/mono/editor/godotsharp_editor.cpp
@@ -0,0 +1,256 @@
+/*************************************************************************/
+/*  godotsharp_editor.cpp                                                */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#include "godotsharp_editor.h"
+
+#include "core/os/os.h"
+#include "core/project_settings.h"
+#include "scene/gui/control.h"
+#include "scene/main/node.h"
+
+#include "../csharp_script.h"
+#include "../godotsharp_dirs.h"
+#include "../mono_gd/gd_mono.h"
+#include "../utils/path_utils.h"
+#include "bindings_generator.h"
+#include "csharp_project.h"
+#include "net_solution.h"
+
+#ifdef WINDOWS_ENABLED
+#include "../utils/mono_reg_utils.h"
+#endif
+
+class MonoReloadNode : public Node {
+	GDCLASS(MonoReloadNode, Node)
+
+protected:
+	void _notification(int p_what) {
+		switch (p_what) {
+			case MainLoop::NOTIFICATION_WM_FOCUS_IN: {
+				CSharpLanguage::get_singleton()->reload_assemblies_if_needed(true);
+			} break;
+			default: {
+			} break;
+		};
+	}
+};
+
+GodotSharpEditor *GodotSharpEditor::singleton = NULL;
+
+bool GodotSharpEditor::_create_project_solution() {
+
+	EditorProgress pr("create_csharp_solution", "Generating solution...", 2);
+
+	pr.step("Generating C# project...");
+
+	String path = OS::get_singleton()->get_resource_dir();
+	String name = ProjectSettings::get_singleton()->get("application/config/name");
+	String guid = CSharpProject::generate_game_project(path, name);
+
+	if (guid.length()) {
+
+		NETSolution solution(name);
+
+		if (!solution.set_path(path)) {
+			show_error_dialog("Failed to create solution.");
+			return false;
+		}
+
+		Vector<String> extra_configs;
+		extra_configs.push_back("Tools");
+
+		solution.add_new_project(name, guid, extra_configs);
+
+		Error sln_error = solution.save();
+
+		if (sln_error != OK) {
+			show_error_dialog("Failed to save solution.");
+			return false;
+		}
+
+		if (!GodotSharpBuilds::make_api_sln(GodotSharpBuilds::API_CORE))
+			return false;
+
+		if (!GodotSharpBuilds::make_api_sln(GodotSharpBuilds::API_EDITOR))
+			return false;
+
+		pr.step("Done");
+
+		// Here, after all calls to progress_task_step
+		call_deferred("_remove_create_sln_menu_option");
+
+	} else {
+		show_error_dialog("Failed to create C# project.");
+	}
+
+	return true;
+}
+
+void GodotSharpEditor::_remove_create_sln_menu_option() {
+
+	menu_popup->remove_item(menu_popup->get_item_index(MENU_CREATE_SLN));
+
+	if (menu_popup->get_item_count() == 0)
+		menu_button->hide();
+
+	bottom_panel_btn->show();
+}
+
+void GodotSharpEditor::_menu_option_pressed(int p_id) {
+
+	switch (p_id) {
+		case MENU_CREATE_SLN: {
+
+			_create_project_solution();
+		} break;
+		default:
+			ERR_FAIL();
+	}
+}
+
+void GodotSharpEditor::_bind_methods() {
+
+	ClassDB::bind_method(D_METHOD("_create_project_solution"), &GodotSharpEditor::_create_project_solution);
+	ClassDB::bind_method(D_METHOD("_remove_create_sln_menu_option"), &GodotSharpEditor::_remove_create_sln_menu_option);
+	ClassDB::bind_method(D_METHOD("_menu_option_pressed", "id"), &GodotSharpEditor::_menu_option_pressed);
+}
+
+void GodotSharpEditor::show_error_dialog(const String &p_message, const String &p_title) {
+
+	error_dialog->set_title(p_title);
+	error_dialog->set_text(p_message);
+	error_dialog->popup_centered_minsize();
+}
+
+Error GodotSharpEditor::open_in_external_editor(const Ref<Script> &p_script, int p_line, int p_col) {
+
+	ExternalEditor editor = ExternalEditor(int(EditorSettings::get_singleton()->get("mono/editor/external_editor")));
+
+	switch (editor) {
+		case EDITOR_CODE: {
+			List<String> args;
+			args.push_back(ProjectSettings::get_singleton()->get_resource_path());
+
+			String script_path = ProjectSettings::get_singleton()->globalize_path(p_script->get_path());
+
+			if (p_line >= 0) {
+				args.push_back("-g");
+				args.push_back(script_path + ":" + itos(p_line) + ":" + itos(p_col));
+			} else {
+				args.push_back(script_path);
+			}
+
+			static String program = path_which("code");
+
+			Error err = OS::get_singleton()->execute(program.length() ? program : "code", args, false);
+
+			if (err != OK) {
+				ERR_PRINT("GodotSharp: Could not execute external editor");
+				return err;
+			}
+		} break;
+		case EDITOR_MONODEVELOP: {
+			if (!monodevel_instance)
+				monodevel_instance = memnew(MonoDevelopInstance(GodotSharpDirs::get_project_sln_path()));
+
+			String script_path = ProjectSettings::get_singleton()->globalize_path(p_script->get_path());
+			monodevel_instance->execute(script_path);
+		} break;
+		case EDITOR_VISUAL_STUDIO:
+		// TODO
+		// devenv <PathToSolutionFolder>
+		// devenv /edit <PathToCsFile> /command "edit.goto <Line>"
+		// HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\SxS\VS7
+		default:
+			return ERR_UNAVAILABLE;
+	}
+
+	return OK;
+}
+
+bool GodotSharpEditor::overrides_external_editor() {
+
+	return ExternalEditor(int(EditorSettings::get_singleton()->get("mono/editor/external_editor"))) != EDITOR_NONE;
+}
+
+GodotSharpEditor::GodotSharpEditor(EditorNode *p_editor) {
+
+	singleton = this;
+
+	monodevel_instance = NULL;
+
+	editor = p_editor;
+
+	error_dialog = memnew(AcceptDialog);
+	editor->get_gui_base()->add_child(error_dialog);
+
+	bottom_panel_btn = editor->add_bottom_panel_item("Mono", memnew(MonoBottomPanel(editor)));
+
+	godotsharp_builds = memnew(GodotSharpBuilds);
+
+	editor->add_child(memnew(MonoReloadNode));
+
+	menu_button = memnew(MenuButton);
+	menu_button->set_text("Mono");
+	menu_popup = menu_button->get_popup();
+
+	String sln_path = GodotSharpDirs::get_project_sln_path();
+	String csproj_path = GodotSharpDirs::get_project_csproj_path();
+
+	if (!FileAccess::exists(sln_path) || !FileAccess::exists(csproj_path)) {
+		bottom_panel_btn->hide();
+		menu_popup->add_item("Create C# solution", MENU_CREATE_SLN);
+	}
+
+	menu_popup->connect("id_pressed", this, "_menu_option_pressed");
+
+	if (menu_popup->get_item_count() == 0)
+		menu_button->hide();
+
+	editor->get_menu_hb()->add_child(menu_button);
+
+	// External editor settings
+	EditorSettings *ed_settings = EditorSettings::get_singleton();
+	if (!ed_settings->has("mono/editor/external_editor")) {
+		ed_settings->set("mono/editor/external_editor", EDITOR_NONE);
+	}
+	ed_settings->add_property_hint(PropertyInfo(Variant::INT, "mono/editor/external_editor", PROPERTY_HINT_ENUM, "None,MonoDevelop,Visual Studio,Visual Studio Code"));
+}
+
+GodotSharpEditor::~GodotSharpEditor() {
+
+	singleton = NULL;
+
+	memdelete(godotsharp_builds);
+
+	if (monodevel_instance) {
+		memdelete(monodevel_instance);
+		monodevel_instance = NULL;
+	}
+}
diff --git a/modules/mono/editor/godotsharp_editor.h b/modules/mono/editor/godotsharp_editor.h
new file mode 100644
index 0000000000..1ecb8c7a94
--- /dev/null
+++ b/modules/mono/editor/godotsharp_editor.h
@@ -0,0 +1,87 @@
+/*************************************************************************/
+/*  godotsharp_editor.h                                                  */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#ifndef GODOTSHARP_EDITOR_H
+#define GODOTSHARP_EDITOR_H
+
+#include "godotsharp_builds.h"
+
+#include "monodevelop_instance.h"
+
+class GodotSharpEditor : public Node {
+	GDCLASS(GodotSharpEditor, Object)
+
+	EditorNode *editor;
+
+	MenuButton *menu_button;
+	PopupMenu *menu_popup;
+
+	AcceptDialog *error_dialog;
+
+	ToolButton *bottom_panel_btn;
+
+	GodotSharpBuilds *godotsharp_builds;
+
+	MonoDevelopInstance *monodevel_instance;
+
+	bool _create_project_solution();
+
+	void _remove_create_sln_menu_option();
+
+	void _menu_option_pressed(int p_id);
+
+	static GodotSharpEditor *singleton;
+
+protected:
+	static void _bind_methods();
+
+public:
+	enum MenuOptions {
+		MENU_CREATE_SLN
+	};
+
+	enum ExternalEditor {
+		EDITOR_NONE,
+		EDITOR_MONODEVELOP,
+		EDITOR_VISUAL_STUDIO,
+		EDITOR_CODE,
+	};
+
+	_FORCE_INLINE_ static GodotSharpEditor *get_singleton() { return singleton; }
+
+	void show_error_dialog(const String &p_message, const String &p_title = "Error");
+
+	Error open_in_external_editor(const Ref<Script> &p_script, int p_line, int p_col);
+	bool overrides_external_editor();
+
+	GodotSharpEditor(EditorNode *p_editor);
+	~GodotSharpEditor();
+};
+
+#endif // GODOTSHARP_EDITOR_H
diff --git a/modules/mono/editor/mono_bottom_panel.cpp b/modules/mono/editor/mono_bottom_panel.cpp
new file mode 100644
index 0000000000..07109eaac7
--- /dev/null
+++ b/modules/mono/editor/mono_bottom_panel.cpp
@@ -0,0 +1,441 @@
+/*************************************************************************/
+/*  mono_bottom_panel.cpp                                                */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#include "mono_bottom_panel.h"
+
+#include "../csharp_script.h"
+#include "godotsharp_editor.h"
+
+MonoBottomPanel *MonoBottomPanel::singleton = NULL;
+
+void MonoBottomPanel::_update_build_tabs_list() {
+
+	build_tabs_list->clear();
+
+	int current_tab = build_tabs->get_current_tab();
+
+	bool no_current_tab = current_tab < 0 || current_tab >= build_tabs->get_tab_count();
+
+	for (int i = 0; i < build_tabs->get_child_count(); i++) {
+
+		MonoBuildTab *tab = Object::cast_to<MonoBuildTab>(build_tabs->get_child(i));
+
+		if (tab) {
+			String item_name = tab->build_info.solution.get_file().get_basename();
+			item_name += " [" + tab->build_info.configuration + "]";
+
+			build_tabs_list->add_item(item_name, tab->get_icon_texture());
+
+			String item_tooltip = String("Solution: ") + tab->build_info.solution;
+			item_tooltip += String("\nConfiguration: ") + tab->build_info.configuration;
+			item_tooltip += String("\nStatus: ");
+
+			if (tab->build_exited) {
+				item_tooltip += tab->build_result == MonoBuildTab::RESULT_SUCCESS ? "Succeeded" : "Errored";
+			} else {
+				item_tooltip += "Running";
+			}
+
+			if (!tab->build_exited || !tab->build_result == MonoBuildTab::RESULT_SUCCESS) {
+				item_tooltip += "\nErrors: " + itos(tab->error_count);
+			}
+
+			item_tooltip += "\nWarnings: " + itos(tab->warning_count);
+
+			build_tabs_list->set_item_tooltip(i, item_tooltip);
+
+			if (no_current_tab || current_tab == i) {
+				build_tabs_list->select(i);
+				_build_tab_item_selected(i);
+			}
+		}
+	}
+}
+
+void MonoBottomPanel::add_build_tab(MonoBuildTab *p_build_tab) {
+
+	build_tabs->add_child(p_build_tab);
+	raise_build_tab(p_build_tab);
+}
+
+void MonoBottomPanel::raise_build_tab(MonoBuildTab *p_build_tab) {
+
+	ERR_FAIL_COND(p_build_tab->get_parent() != build_tabs);
+	build_tabs->move_child(p_build_tab, 0);
+	_update_build_tabs_list();
+}
+
+void MonoBottomPanel::show_build_tab() {
+
+	for (int i = 0; i < panel_tabs->get_tab_count(); i++) {
+		if (panel_tabs->get_tab_control(i) == panel_builds_tab) {
+			panel_tabs->set_current_tab(i);
+			editor->make_bottom_panel_item_visible(this);
+			return;
+		}
+	}
+
+	ERR_PRINT("Builds tab not found");
+}
+
+void MonoBottomPanel::_build_tab_item_selected(int p_idx) {
+
+	ERR_FAIL_INDEX(p_idx, build_tabs->get_tab_count());
+	build_tabs->set_current_tab(p_idx);
+}
+
+void MonoBottomPanel::_build_tab_changed(int p_idx) {
+
+	if (p_idx < 0 || p_idx >= build_tabs->get_tab_count()) {
+		warnings_btn->set_visible(false);
+		errors_btn->set_visible(false);
+	} else {
+		warnings_btn->set_visible(true);
+		errors_btn->set_visible(true);
+	}
+}
+
+void MonoBottomPanel::_warnings_toggled(bool p_pressed) {
+
+	int current_tab = build_tabs->get_current_tab();
+	ERR_FAIL_INDEX(current_tab, build_tabs->get_tab_count());
+	MonoBuildTab *build_tab = Object::cast_to<MonoBuildTab>(build_tabs->get_child(current_tab));
+	build_tab->warnings_visible = p_pressed;
+	build_tab->_update_issues_list();
+}
+
+void MonoBottomPanel::_errors_toggled(bool p_pressed) {
+
+	int current_tab = build_tabs->get_current_tab();
+	ERR_FAIL_INDEX(current_tab, build_tabs->get_tab_count());
+	MonoBuildTab *build_tab = Object::cast_to<MonoBuildTab>(build_tabs->get_child(current_tab));
+	build_tab->errors_visible = p_pressed;
+	build_tab->_update_issues_list();
+}
+
+void MonoBottomPanel::_notification(int p_what) {
+
+	switch (p_what) {
+
+		case EditorSettings::NOTIFICATION_EDITOR_SETTINGS_CHANGED: {
+			panel_tabs->add_style_override("panel", editor->get_gui_base()->get_stylebox("DebuggerPanel", "EditorStyles"));
+			panel_tabs->add_style_override("tab_fg", editor->get_gui_base()->get_stylebox("DebuggerTabFG", "EditorStyles"));
+			panel_tabs->add_style_override("tab_bg", editor->get_gui_base()->get_stylebox("DebuggerTabBG", "EditorStyles"));
+		} break;
+	}
+}
+
+void MonoBottomPanel::_bind_methods() {
+
+	ClassDB::bind_method(D_METHOD("_warnings_toggled", "pressed"), &MonoBottomPanel::_warnings_toggled);
+	ClassDB::bind_method(D_METHOD("_errors_toggled", "pressed"), &MonoBottomPanel::_errors_toggled);
+	ClassDB::bind_method(D_METHOD("_build_tab_item_selected", "idx"), &MonoBottomPanel::_build_tab_item_selected);
+	ClassDB::bind_method(D_METHOD("_build_tab_changed", "idx"), &MonoBottomPanel::_build_tab_changed);
+}
+
+MonoBottomPanel::MonoBottomPanel(EditorNode *p_editor) {
+
+	singleton = this;
+
+	editor = p_editor;
+
+	set_v_size_flags(SIZE_EXPAND_FILL);
+	set_anchors_and_margins_preset(Control::PRESET_WIDE);
+
+	panel_tabs = memnew(TabContainer);
+	panel_tabs->set_tab_align(TabContainer::ALIGN_LEFT);
+	panel_tabs->add_style_override("panel", editor->get_gui_base()->get_stylebox("DebuggerPanel", "EditorStyles"));
+	panel_tabs->add_style_override("tab_fg", editor->get_gui_base()->get_stylebox("DebuggerTabFG", "EditorStyles"));
+	panel_tabs->add_style_override("tab_bg", editor->get_gui_base()->get_stylebox("DebuggerTabBG", "EditorStyles"));
+	panel_tabs->set_custom_minimum_size(Size2(0, 228) * EDSCALE);
+	panel_tabs->set_v_size_flags(SIZE_EXPAND_FILL);
+	add_child(panel_tabs);
+
+	{ // Builds
+		panel_builds_tab = memnew(VBoxContainer);
+		panel_builds_tab->set_name(TTR("Builds"));
+		panel_builds_tab->set_h_size_flags(SIZE_EXPAND_FILL);
+		panel_tabs->add_child(panel_builds_tab);
+
+		HBoxContainer *toolbar_hbc = memnew(HBoxContainer);
+		toolbar_hbc->set_h_size_flags(SIZE_EXPAND_FILL);
+		panel_builds_tab->add_child(toolbar_hbc);
+
+		toolbar_hbc->add_spacer();
+
+		warnings_btn = memnew(ToolButton);
+		warnings_btn->set_text("Warnings");
+		warnings_btn->set_toggle_mode(true);
+		warnings_btn->set_pressed(true);
+		warnings_btn->set_visible(false);
+		warnings_btn->set_focus_mode(FOCUS_NONE);
+		warnings_btn->connect("toggled", this, "_warnings_toggled");
+		toolbar_hbc->add_child(warnings_btn);
+
+		errors_btn = memnew(ToolButton);
+		errors_btn->set_text("Errors");
+		errors_btn->set_toggle_mode(true);
+		errors_btn->set_pressed(true);
+		errors_btn->set_visible(false);
+		errors_btn->set_focus_mode(FOCUS_NONE);
+		errors_btn->connect("toggled", this, "_errors_toggled");
+		toolbar_hbc->add_child(errors_btn);
+
+		HSplitContainer *hsc = memnew(HSplitContainer);
+		hsc->set_h_size_flags(SIZE_EXPAND_FILL);
+		hsc->set_v_size_flags(SIZE_EXPAND_FILL);
+		panel_builds_tab->add_child(hsc);
+
+		build_tabs_list = memnew(ItemList);
+		build_tabs_list->set_h_size_flags(SIZE_EXPAND_FILL);
+		build_tabs_list->connect("item_selected", this, "_build_tab_item_selected");
+		hsc->add_child(build_tabs_list);
+
+		build_tabs = memnew(TabContainer);
+		build_tabs->set_tab_align(TabContainer::ALIGN_LEFT);
+		build_tabs->set_h_size_flags(SIZE_EXPAND_FILL);
+		build_tabs->set_tabs_visible(false);
+		build_tabs->connect("tab_changed", this, "_build_tab_changed");
+		hsc->add_child(build_tabs);
+	}
+}
+
+MonoBottomPanel::~MonoBottomPanel() {
+
+	singleton = NULL;
+}
+
+void MonoBuildTab::_load_issues_from_file(const String &p_csv_file) {
+
+	FileAccessRef f = FileAccess::open(p_csv_file, FileAccess::READ);
+
+	if (!f)
+		return;
+
+	while (!f->eof_reached()) {
+		Vector<String> csv_line = f->get_csv_line();
+
+		if (csv_line.size() == 1 && csv_line[0].empty())
+			return;
+
+		ERR_CONTINUE(csv_line.size() != 7);
+
+		BuildIssue issue;
+		issue.warning = csv_line[0] == "warning";
+		issue.file = csv_line[1];
+		issue.line = csv_line[2].to_int();
+		issue.column = csv_line[3].to_int();
+		issue.code = csv_line[4];
+		issue.message = csv_line[5];
+		issue.project_file = csv_line[6];
+
+		if (issue.warning)
+			warning_count += 1;
+		else
+			error_count += 1;
+
+		issues.push_back(issue);
+	}
+}
+
+void MonoBuildTab::_update_issues_list() {
+
+	issues_list->clear();
+
+	Ref<Texture> warning_icon = get_icon("Warning", "EditorIcons");
+	Ref<Texture> error_icon = get_icon("Error", "EditorIcons");
+
+	for (int i = 0; i < issues.size(); i++) {
+
+		const BuildIssue &issue = issues[i];
+
+		if (!(issue.warning ? warnings_visible : errors_visible))
+			continue;
+
+		String tooltip;
+		tooltip += String("Message: ") + issue.message;
+		tooltip += String("\nCode: ") + issue.code;
+		tooltip += String("\nType: ") + (issue.warning ? "warning" : "error");
+
+		String text;
+
+		if (issue.file.length()) {
+			String sline = String::num_int64(issue.line);
+			String scolumn = String::num_int64(issue.column);
+
+			text += issue.file + "(";
+			text += sline + ",";
+			text += scolumn + "): ";
+
+			tooltip += "\nFile: " + issue.file;
+			tooltip += "\nLine: " + sline;
+			tooltip += "\nColumn: " + scolumn;
+		}
+
+		if (issue.project_file.length()) {
+			tooltip += "\nProject: " + issue.project_file;
+		}
+
+		text += issue.message;
+
+		int line_break_idx = text.find("\n");
+		issues_list->add_item(line_break_idx == -1 ? text : text.substr(0, line_break_idx),
+				issue.warning ? warning_icon : error_icon);
+		int index = issues_list->get_item_count() - 1;
+		issues_list->set_item_tooltip(index, tooltip);
+		issues_list->set_item_metadata(index, i);
+	}
+}
+
+Ref<Texture> MonoBuildTab::get_icon_texture() const {
+
+	// FIXME these icons were removed... find something better
+
+	if (build_exited) {
+		if (build_result == RESULT_ERROR) {
+			return get_icon("DependencyChangedHl", "EditorIcons");
+		} else {
+			return get_icon("DependencyOkHl", "EditorIcons");
+		}
+	} else {
+		return get_icon("GraphTime", "EditorIcons");
+	}
+}
+
+MonoBuildInfo MonoBuildTab::get_build_info() {
+
+	return build_info;
+}
+
+void MonoBuildTab::on_build_start() {
+
+	build_exited = false;
+
+	issues.clear();
+	warning_count = 0;
+	error_count = 0;
+	_update_issues_list();
+
+	MonoBottomPanel::get_singleton()->raise_build_tab(this);
+}
+
+void MonoBuildTab::on_build_exit(BuildResult result) {
+
+	build_exited = true;
+	build_result = result;
+
+	_load_issues_from_file(logs_dir.plus_file("msbuild_issues.csv"));
+	_update_issues_list();
+
+	MonoBottomPanel::get_singleton()->raise_build_tab(this);
+}
+
+void MonoBuildTab::on_build_exec_failed(const String &p_cause, const String &p_detailed) {
+
+	build_exited = true;
+	build_result = RESULT_ERROR;
+
+	issues_list->clear();
+
+	String tooltip;
+
+	tooltip += "Message: " + (p_detailed.length() ? p_detailed : p_cause);
+	tooltip += "\nType: error";
+
+	int line_break_idx = p_cause.find("\n");
+	issues_list->add_item(line_break_idx == -1 ? p_cause : p_cause.substr(0, line_break_idx),
+			get_icon("Error", "EditorIcons"));
+	int index = issues_list->get_item_count() - 1;
+	issues_list->set_item_tooltip(index, tooltip);
+
+	MonoBottomPanel::get_singleton()->raise_build_tab(this);
+}
+
+void MonoBuildTab::restart_build() {
+
+	ERR_FAIL_COND(!build_exited);
+	GodotSharpBuilds::get_singleton()->restart_build(this);
+}
+
+void MonoBuildTab::stop_build() {
+
+	ERR_FAIL_COND(build_exited);
+	GodotSharpBuilds::get_singleton()->stop_build(this);
+}
+
+void MonoBuildTab::_issue_activated(int p_idx) {
+
+	ERR_FAIL_INDEX(p_idx, issues.size());
+
+	const BuildIssue &issue = issues[p_idx];
+
+	if (issue.project_file.empty() && issue.file.empty())
+		return;
+
+	String project_dir = issue.project_file.length() ? issue.project_file.get_base_dir() : build_info.solution.get_base_dir();
+
+	String file = project_dir.simplify_path().plus_file(issue.file.simplify_path());
+
+	if (!FileAccess::exists(file))
+		return;
+
+	file = ProjectSettings::get_singleton()->localize_path(file);
+
+	if (file.begins_with("res://")) {
+		Ref<Script> script = ResourceLoader::load(file, CSharpLanguage::get_singleton()->get_type());
+
+		if (script.is_valid() && ScriptEditor::get_singleton()->edit(script, issue.line, issue.column)) {
+			EditorNode::get_singleton()->call("_editor_select", EditorNode::EDITOR_SCRIPT);
+		}
+	}
+}
+
+void MonoBuildTab::_bind_methods() {
+
+	ClassDB::bind_method("_issue_activated", &MonoBuildTab::_issue_activated);
+}
+
+MonoBuildTab::MonoBuildTab(const MonoBuildInfo &p_build_info, const String &p_logs_dir) {
+
+	build_info = p_build_info;
+	logs_dir = p_logs_dir;
+
+	build_exited = false;
+
+	issues_list = memnew(ItemList);
+	issues_list->set_v_size_flags(SIZE_EXPAND_FILL);
+	issues_list->connect("item_activated", this, "_issue_activated");
+	add_child(issues_list);
+
+	error_count = 0;
+	warning_count = 0;
+
+	errors_visible = true;
+	warnings_visible = true;
+}
diff --git a/modules/mono/editor/mono_bottom_panel.h b/modules/mono/editor/mono_bottom_panel.h
new file mode 100644
index 0000000000..909fa4b385
--- /dev/null
+++ b/modules/mono/editor/mono_bottom_panel.h
@@ -0,0 +1,145 @@
+/*************************************************************************/
+/*  mono_bottom_panel.h                                                  */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#ifndef MONO_BOTTOM_PANEL_H
+#define MONO_BOTTOM_PANEL_H
+
+#include "editor/editor_node.h"
+#include "scene/gui/control.h"
+
+#include "mono_build_info.h"
+
+class MonoBuildTab;
+
+class MonoBottomPanel : public VBoxContainer {
+
+	GDCLASS(MonoBottomPanel, VBoxContainer)
+
+	EditorNode *editor;
+
+	TabContainer *panel_tabs;
+
+	VBoxContainer *panel_builds_tab;
+
+	ItemList *build_tabs_list;
+	TabContainer *build_tabs;
+
+	Button *warnings_btn;
+	Button *errors_btn;
+
+	void _update_build_tabs_list();
+
+	void _build_tab_item_selected(int p_idx);
+	void _build_tab_changed(int p_idx);
+
+	void _warnings_toggled(bool p_pressed);
+	void _errors_toggled(bool p_pressed);
+
+	static MonoBottomPanel *singleton;
+
+protected:
+	void _notification(int p_what);
+
+	static void _bind_methods();
+
+public:
+	_FORCE_INLINE_ static MonoBottomPanel *get_singleton() { return singleton; }
+
+	void add_build_tab(MonoBuildTab *p_build_tab);
+	void raise_build_tab(MonoBuildTab *p_build_tab);
+
+	void show_build_tab();
+
+	MonoBottomPanel(EditorNode *p_editor = NULL);
+	~MonoBottomPanel();
+};
+
+class MonoBuildTab : public VBoxContainer {
+
+	GDCLASS(MonoBuildTab, VBoxContainer)
+
+public:
+	enum BuildResult {
+		RESULT_ERROR,
+		RESULT_SUCCESS
+	};
+
+	struct BuildIssue {
+		bool warning;
+		String file;
+		int line;
+		int column;
+		String code;
+		String message;
+		String project_file;
+	};
+
+private:
+	friend class MonoBottomPanel;
+
+	bool build_exited;
+	BuildResult build_result;
+
+	Vector<BuildIssue> issues;
+	ItemList *issues_list;
+
+	int error_count;
+	int warning_count;
+
+	bool errors_visible;
+	bool warnings_visible;
+
+	String logs_dir;
+
+	MonoBuildInfo build_info;
+
+	void _load_issues_from_file(const String &p_csv_file);
+	void _update_issues_list();
+
+	void _issue_activated(int p_idx);
+
+protected:
+	static void _bind_methods();
+
+public:
+	Ref<Texture> get_icon_texture() const;
+
+	MonoBuildInfo get_build_info();
+
+	void on_build_start();
+	void on_build_exit(BuildResult result);
+	void on_build_exec_failed(const String &p_cause, const String &p_detailed = String());
+
+	void restart_build();
+	void stop_build();
+
+	MonoBuildTab(const MonoBuildInfo &p_build_info, const String &p_logs_dir);
+};
+
+#endif // MONO_BOTTOM_PANEL_H
diff --git a/modules/mono/editor/mono_build_info.h b/modules/mono/editor/mono_build_info.h
new file mode 100644
index 0000000000..f3b3e43b6d
--- /dev/null
+++ b/modules/mono/editor/mono_build_info.h
@@ -0,0 +1,64 @@
+/*************************************************************************/
+/*  mono_build_info.h                                                    */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#ifndef MONO_BUILD_INFO_H
+#define MONO_BUILD_INFO_H
+
+#include "../mono_gd/gd_mono_utils.h"
+
+struct MonoBuildInfo {
+
+	struct Hasher {
+		static _FORCE_INLINE_ uint32_t hash(const MonoBuildInfo &p_key) {
+			uint32_t hash = 0;
+
+			GDMonoUtils::hash_combine(hash, p_key.solution.hash());
+			GDMonoUtils::hash_combine(hash, p_key.configuration.hash());
+
+			return hash;
+		}
+	};
+
+	String solution;
+	String configuration;
+	Vector<String> custom_props;
+
+	MonoBuildInfo() {}
+
+	MonoBuildInfo(const String &p_solution, const String &p_config) {
+		solution = p_solution;
+		configuration = p_config;
+	}
+
+	bool operator==(const MonoBuildInfo &p_b) const {
+		return p_b.solution == solution && p_b.configuration == configuration;
+	}
+};
+
+#endif // MONO_BUILD_INFO_H
diff --git a/modules/mono/editor/monodevelop_instance.cpp b/modules/mono/editor/monodevelop_instance.cpp
new file mode 100644
index 0000000000..a34d82ffcb
--- /dev/null
+++ b/modules/mono/editor/monodevelop_instance.cpp
@@ -0,0 +1,81 @@
+/*************************************************************************/
+/*  monodevelop_instance.cpp                                             */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#include "monodevelop_instance.h"
+
+#include "../mono_gd/gd_mono.h"
+#include "../mono_gd/gd_mono_class.h"
+
+void MonoDevelopInstance::execute(const Vector<String> &p_files) {
+
+	ERR_FAIL_NULL(execute_method);
+	ERR_FAIL_COND(gc_handle.is_null());
+
+	MonoObject *ex = NULL;
+
+	Variant files = p_files;
+	const Variant *args[1] = { &files };
+	execute_method->invoke(gc_handle->get_target(), args, &ex);
+
+	if (ex) {
+		mono_print_unhandled_exception(ex);
+		ERR_FAIL();
+	}
+}
+
+void MonoDevelopInstance::execute(const String &p_file) {
+
+	Vector<String> files;
+	files.push_back(p_file);
+	execute(files);
+}
+
+MonoDevelopInstance::MonoDevelopInstance(const String &p_solution) {
+
+	_GDMONO_SCOPE_DOMAIN_(TOOLS_DOMAIN)
+
+	GDMonoClass *klass = GDMono::get_singleton()->get_editor_tools_assembly()->get_class("GodotSharpTools.Editor", "MonoDevelopInstance");
+
+	MonoObject *obj = mono_object_new(TOOLS_DOMAIN, klass->get_raw());
+
+	GDMonoMethod *ctor = klass->get_method(".ctor", 1);
+	MonoObject *ex = NULL;
+
+	Variant solution = p_solution;
+	const Variant *args[1] = { &solution };
+	ctor->invoke(obj, args, &ex);
+
+	if (ex) {
+		mono_print_unhandled_exception(ex);
+		ERR_FAIL();
+	}
+
+	gc_handle = MonoGCHandle::create_strong(obj);
+	execute_method = klass->get_method("Execute", 1);
+}
diff --git a/modules/mono/editor/monodevelop_instance.h b/modules/mono/editor/monodevelop_instance.h
new file mode 100644
index 0000000000..9eb154eba1
--- /dev/null
+++ b/modules/mono/editor/monodevelop_instance.h
@@ -0,0 +1,50 @@
+/*************************************************************************/
+/*  monodevelop_instance.h                                               */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#ifndef MONODEVELOP_INSTANCE_H
+#define MONODEVELOP_INSTANCE_H
+
+#include "reference.h"
+
+#include "../mono_gc_handle.h"
+#include "../mono_gd/gd_mono_method.h"
+
+class MonoDevelopInstance {
+
+	Ref<MonoGCHandle> gc_handle;
+	GDMonoMethod *execute_method;
+
+public:
+	void execute(const Vector<String> &p_files);
+	void execute(const String &p_files);
+
+	MonoDevelopInstance(const String &p_solution);
+};
+
+#endif // MONODEVELOP_INSTANCE_H
diff --git a/modules/mono/editor/net_solution.cpp b/modules/mono/editor/net_solution.cpp
new file mode 100644
index 0000000000..fa60c310db
--- /dev/null
+++ b/modules/mono/editor/net_solution.cpp
@@ -0,0 +1,130 @@
+/*************************************************************************/
+/*  net_solution.cpp                                                     */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#include "net_solution.h"
+
+#include "os/dir_access.h"
+#include "os/file_access.h"
+
+#include "../utils/path_utils.h"
+#include "../utils/string_utils.h"
+#include "csharp_project.h"
+
+#define SOLUTION_TEMPLATE                                             \
+	"Microsoft Visual Studio Solution File, Format Version 12.00\n"   \
+	"# Visual Studio 2012\n"                                          \
+	"%0\n"                                                            \
+	"Global\n"                                                        \
+	"\tGlobalSection(SolutionConfigurationPlatforms) = preSolution\n" \
+	"%1\n"                                                            \
+	"\tEndGlobalSection\n"                                            \
+	"\tGlobalSection(ProjectConfigurationPlatforms) = postSolution\n" \
+	"%2\n"                                                            \
+	"\tEndGlobalSection\n"                                            \
+	"EndGlobal\n"
+
+#define PROJECT_DECLARATION "Project(\"{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}\") = \"%0\", \"%1\", \"{%2}\"\nEndProject"
+
+#define SOLUTION_PLATFORMS_CONFIG "\t\%0|Any CPU = %0|Any CPU"
+
+#define PROJECT_PLATFORMS_CONFIG                   \
+	"\t\t{%0}.%1|Any CPU.ActiveCfg = %1|Any CPU\n" \
+	"\t\t{%0}.%1|Any CPU.Build.0 = %1|Any CPU"
+
+void NETSolution::add_new_project(const String &p_name, const String &p_guid, const Vector<String> &p_extra_configs) {
+	if (projects.has(p_name))
+		WARN_PRINT("Overriding existing project.");
+
+	ProjectInfo procinfo;
+	procinfo.guid = p_guid;
+
+	procinfo.configs.push_back("Debug");
+	procinfo.configs.push_back("Release");
+
+	for (int i = 0; i < p_extra_configs.size(); i++) {
+		procinfo.configs.push_back(p_extra_configs[i]);
+	}
+
+	projects[p_name] = procinfo;
+}
+
+Error NETSolution::save() {
+	bool dir_exists = DirAccess::exists(path);
+	ERR_EXPLAIN("The directory does not exist.");
+	ERR_FAIL_COND_V(!dir_exists, ERR_FILE_BAD_PATH);
+
+	String projs_decl;
+	String sln_platform_cfg;
+	String proj_platform_cfg;
+
+	for (Map<String, ProjectInfo>::Element *E = projects.front(); E; E = E->next()) {
+		const String &name = E->key();
+		const ProjectInfo &procinfo = E->value();
+
+		projs_decl += sformat(PROJECT_DECLARATION, name, name + ".csproj", procinfo.guid);
+
+		for (int i = 0; i < procinfo.configs.size(); i++) {
+			const String &config = procinfo.configs[i];
+
+			if (i != 0) {
+				sln_platform_cfg += "\n";
+				proj_platform_cfg += "\n";
+			}
+
+			sln_platform_cfg += sformat(SOLUTION_PLATFORMS_CONFIG, config);
+			proj_platform_cfg += sformat(PROJECT_PLATFORMS_CONFIG, procinfo.guid, config);
+		}
+	}
+
+	String content = sformat(SOLUTION_TEMPLATE, projs_decl, sln_platform_cfg, proj_platform_cfg);
+
+	FileAccessRef file = FileAccess::open(path_join(path, name + ".sln"), FileAccess::WRITE);
+	ERR_FAIL_COND_V(!file, ERR_FILE_CANT_WRITE);
+	file->store_string(content);
+	file->close();
+
+	return OK;
+}
+
+bool NETSolution::set_path(const String &p_existing_path) {
+	if (p_existing_path.is_abs_path()) {
+		path = p_existing_path;
+	} else {
+		String abspath;
+		if (!rel_path_to_abs(p_existing_path, abspath))
+			return false;
+		path = abspath;
+	}
+
+	return true;
+}
+
+NETSolution::NETSolution(const String &p_name) {
+	name = p_name;
+}
diff --git a/modules/mono/editor/net_solution.h b/modules/mono/editor/net_solution.h
new file mode 100644
index 0000000000..d7ccebb7df
--- /dev/null
+++ b/modules/mono/editor/net_solution.h
@@ -0,0 +1,57 @@
+/*************************************************************************/
+/*  net_solution.h                                                       */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#ifndef NET_SOLUTION_H
+#define NET_SOLUTION_H
+
+#include "map.h"
+#include "ustring.h"
+
+struct NETSolution {
+	String name;
+
+	void add_new_project(const String &p_name, const String &p_guid, const Vector<String> &p_extra_configs = Vector<String>());
+
+	Error save();
+
+	bool set_path(const String &p_existing_path);
+
+	NETSolution(const String &p_name);
+
+private:
+	struct ProjectInfo {
+		String guid;
+		Vector<String> configs;
+	};
+
+	String path;
+	Map<String, ProjectInfo> projects;
+};
+
+#endif // NET_SOLUTION_H