Implement toast notifications in the editor

14 files changed, 265 insertions, 70 deletions

diff --git a/core/debugger/engine_debugger.h b/core/debugger/engine_debugger.h
index 22c6ef943e..41142bf305 100644
--- a/core/debugger/engine_debugger.h
+++ b/core/debugger/engine_debugger.h
@@ -128,7 +128,7 @@ public:
 
 	virtual void poll_events(bool p_is_idle) {}
 	virtual void send_message(const String &p_msg, const Array &p_data) = 0;
-	virtual void send_error(const String &p_func, const String &p_file, int p_line, const String &p_err, const String &p_descr, ErrorHandlerType p_type) = 0;
+	virtual void send_error(const String &p_func, const String &p_file, int p_line, const String &p_err, const String &p_descr, bool p_editor_notify, ErrorHandlerType p_type) = 0;
 	virtual void debug(bool p_can_continue = true, bool p_is_error_breakpoint = false) = 0;
 
 	virtual ~EngineDebugger();
diff --git a/core/debugger/local_debugger.cpp b/core/debugger/local_debugger.cpp
index f7e56351b0..60aa3e6be7 100644
--- a/core/debugger/local_debugger.cpp
+++ b/core/debugger/local_debugger.cpp
@@ -358,7 +358,7 @@ void LocalDebugger::send_message(const String &p_message, const Array &p_args) {
 	// print_line("MESSAGE: '" + p_message + "' - " + String(Variant(p_args)));
 }
 
-void LocalDebugger::send_error(const String &p_func, const String &p_file, int p_line, const String &p_err, const String &p_descr, ErrorHandlerType p_type) {
+void LocalDebugger::send_error(const String &p_func, const String &p_file, int p_line, const String &p_err, const String &p_descr, bool p_editor_notify, ErrorHandlerType p_type) {
 	print_line("ERROR: '" + (p_descr.is_empty() ? p_err : p_descr) + "'");
 }
 
diff --git a/core/debugger/local_debugger.h b/core/debugger/local_debugger.h
index e793b2a859..cb59eb82e9 100644
--- a/core/debugger/local_debugger.h
+++ b/core/debugger/local_debugger.h
@@ -50,7 +50,7 @@ private:
 public:
 	void debug(bool p_can_continue, bool p_is_error_breakpoint);
 	void send_message(const String &p_message, const Array &p_args);
-	void send_error(const String &p_func, const String &p_file, int p_line, const String &p_err, const String &p_descr, ErrorHandlerType p_type);
+	void send_error(const String &p_func, const String &p_file, int p_line, const String &p_err, const String &p_descr, bool p_editor_notify, ErrorHandlerType p_type);
 
 	LocalDebugger();
 	~LocalDebugger();
diff --git a/core/debugger/remote_debugger.cpp b/core/debugger/remote_debugger.cpp
index 032c7d55c0..9967d1e361 100644
--- a/core/debugger/remote_debugger.cpp
+++ b/core/debugger/remote_debugger.cpp
@@ -455,7 +455,7 @@ Error RemoteDebugger::_put_msg(String p_message, Array p_data) {
 	return err;
 }
 
-void RemoteDebugger::_err_handler(void *p_this, const char *p_func, const char *p_file, int p_line, const char *p_err, const char *p_descr, ErrorHandlerType p_type) {
+void RemoteDebugger::_err_handler(void *p_this, const char *p_func, const char *p_file, int p_line, const char *p_err, const char *p_descr, bool p_editor_notify, ErrorHandlerType p_type) {
 	if (p_type == ERR_HANDLER_SCRIPT) {
 		return; //ignore script errors, those go through debugger
 	}
@@ -475,7 +475,7 @@ void RemoteDebugger::_err_handler(void *p_this, const char *p_func, const char *
 	}
 
 	// send_error will lock internally.
-	rd->script_debugger->send_error(p_func, p_file, p_line, p_err, p_descr, p_type, si);
+	rd->script_debugger->send_error(p_func, p_file, p_line, p_err, p_descr, p_editor_notify, p_type, si);
 }
 
 void RemoteDebugger::_print_handler(void *p_this, const String &p_string, bool p_error) {
@@ -605,7 +605,7 @@ void RemoteDebugger::send_message(const String &p_message, const Array &p_args)
 	}
 }
 
-void RemoteDebugger::send_error(const String &p_func, const String &p_file, int p_line, const String &p_err, const String &p_descr, ErrorHandlerType p_type) {
+void RemoteDebugger::send_error(const String &p_func, const String &p_file, int p_line, const String &p_err, const String &p_descr, bool p_editor_notify, ErrorHandlerType p_type) {
 	ErrorMessage oe;
 	oe.error = p_err;
 	oe.error_descr = p_descr;
diff --git a/core/debugger/remote_debugger.h b/core/debugger/remote_debugger.h
index 28e670747e..73799e3f81 100644
--- a/core/debugger/remote_debugger.h
+++ b/core/debugger/remote_debugger.h
@@ -89,7 +89,7 @@ private:
 	PrintHandlerList phl;
 	static void _print_handler(void *p_this, const String &p_string, bool p_error);
 	ErrorHandlerList eh;
-	static void _err_handler(void *p_this, const char *p_func, const char *p_file, int p_line, const char *p_err, const char *p_descr, ErrorHandlerType p_type);
+	static void _err_handler(void *p_this, const char *p_func, const char *p_file, int p_line, const char *p_err, const char *p_descr, bool p_editor_notify, ErrorHandlerType p_type);
 
 	ErrorMessage _create_overflow_error(const String &p_what, const String &p_descr);
 	Error _put_msg(String p_message, Array p_data);
@@ -111,7 +111,7 @@ public:
 	// Overrides
 	void poll_events(bool p_is_idle);
 	void send_message(const String &p_message, const Array &p_args);
-	void send_error(const String &p_func, const String &p_file, int p_line, const String &p_err, const String &p_descr, ErrorHandlerType p_type);
+	void send_error(const String &p_func, const String &p_file, int p_line, const String &p_err, const String &p_descr, bool p_editor_notify, ErrorHandlerType p_type);
 	void debug(bool p_can_continue = true, bool p_is_error_breakpoint = false);
 
 	RemoteDebugger(Ref<RemoteDebuggerPeer> p_peer);
diff --git a/core/debugger/script_debugger.cpp b/core/debugger/script_debugger.cpp
index 6d1e4ed101..70ec101a03 100644
--- a/core/debugger/script_debugger.cpp
+++ b/core/debugger/script_debugger.cpp
@@ -100,10 +100,10 @@ void ScriptDebugger::debug(ScriptLanguage *p_lang, bool p_can_continue, bool p_i
 	break_lang = prev;
 }
 
-void ScriptDebugger::send_error(const String &p_func, const String &p_file, int p_line, const String &p_err, const String &p_descr, ErrorHandlerType p_type, const Vector<StackInfo> &p_stack_info) {
+void ScriptDebugger::send_error(const String &p_func, const String &p_file, int p_line, const String &p_err, const String &p_descr, bool p_editor_notify, ErrorHandlerType p_type, const Vector<StackInfo> &p_stack_info) {
 	// Store stack info, this is ugly, but allows us to separate EngineDebugger and ScriptDebugger. There might be a better way.
 	error_stack_info.append_array(p_stack_info);
-	EngineDebugger::get_singleton()->send_error(p_func, p_file, p_line, p_err, p_descr, p_type);
+	EngineDebugger::get_singleton()->send_error(p_func, p_file, p_line, p_err, p_descr, p_editor_notify, p_type);
 	error_stack_info.resize(0);
 }
 
diff --git a/core/debugger/script_debugger.h b/core/debugger/script_debugger.h
index 9f034a5e5d..c1d0170334 100644
--- a/core/debugger/script_debugger.h
+++ b/core/debugger/script_debugger.h
@@ -71,7 +71,7 @@ public:
 	void debug(ScriptLanguage *p_lang, bool p_can_continue = true, bool p_is_error_breakpoint = false);
 	ScriptLanguage *get_break_language() const;
 
-	void send_error(const String &p_func, const String &p_file, int p_line, const String &p_err, const String &p_descr, ErrorHandlerType p_type, const Vector<StackInfo> &p_stack_info);
+	void send_error(const String &p_func, const String &p_file, int p_line, const String &p_err, const String &p_descr, bool p_editor_notify, ErrorHandlerType p_type, const Vector<StackInfo> &p_stack_info);
 	Vector<StackInfo> get_error_stack_info() const;
 	ScriptDebugger() {}
 };
diff --git a/core/error/error_macros.cpp b/core/error/error_macros.cpp
index 272dda97d8..719ea8afb5 100644
--- a/core/error/error_macros.cpp
+++ b/core/error/error_macros.cpp
@@ -65,45 +65,49 @@ void remove_error_handler(ErrorHandlerList *p_handler) {
 	_global_unlock();
 }
 
-void _err_print_error(const char *p_function, const char *p_file, int p_line, const char *p_error, ErrorHandlerType p_type) {
-	_err_print_error(p_function, p_file, p_line, p_error, "", p_type);
+// Errors without messages.
+void _err_print_error(const char *p_function, const char *p_file, int p_line, const char *p_error, bool p_editor_notify, ErrorHandlerType p_type) {
+	_err_print_error(p_function, p_file, p_line, p_error, "", p_editor_notify, p_type);
 }
 
-void _err_print_error(const char *p_function, const char *p_file, int p_line, const String &p_error, ErrorHandlerType p_type) {
-	_err_print_error(p_function, p_file, p_line, p_error.utf8().get_data(), "", p_type);
+void _err_print_error(const char *p_function, const char *p_file, int p_line, const String &p_error, bool p_editor_notify, ErrorHandlerType p_type) {
+	_err_print_error(p_function, p_file, p_line, p_error.utf8().get_data(), "", p_editor_notify, p_type);
 }
 
-void _err_print_error(const char *p_function, const char *p_file, int p_line, const char *p_error, const char *p_message, ErrorHandlerType p_type) {
+// Main error printing function.
+void _err_print_error(const char *p_function, const char *p_file, int p_line, const char *p_error, const char *p_message, bool p_editor_notify, ErrorHandlerType p_type) {
 	OS::get_singleton()->print_error(p_function, p_file, p_line, p_error, p_message, (Logger::ErrorType)p_type);
 
 	_global_lock();
 	ErrorHandlerList *l = error_handler_list;
 	while (l) {
-		l->errfunc(l->userdata, p_function, p_file, p_line, p_error, p_message, p_type);
+		l->errfunc(l->userdata, p_function, p_file, p_line, p_error, p_message, p_editor_notify, p_type);
 		l = l->next;
 	}
 
 	_global_unlock();
 }
 
-void _err_print_error(const char *p_function, const char *p_file, int p_line, const String &p_error, const char *p_message, ErrorHandlerType p_type) {
-	_err_print_error(p_function, p_file, p_line, p_error.utf8().get_data(), p_message, p_type);
+// Errors with message. (All combinations of p_error and p_message as String or char*.)
+void _err_print_error(const char *p_function, const char *p_file, int p_line, const String &p_error, const char *p_message, bool p_editor_notify, ErrorHandlerType p_type) {
+	_err_print_error(p_function, p_file, p_line, p_error.utf8().get_data(), p_message, p_editor_notify, p_type);
 }
 
-void _err_print_error(const char *p_function, const char *p_file, int p_line, const char *p_error, const String &p_message, ErrorHandlerType p_type) {
-	_err_print_error(p_function, p_file, p_line, p_error, p_message.utf8().get_data(), p_type);
+void _err_print_error(const char *p_function, const char *p_file, int p_line, const char *p_error, const String &p_message, bool p_editor_notify, ErrorHandlerType p_type) {
+	_err_print_error(p_function, p_file, p_line, p_error, p_message.utf8().get_data(), p_editor_notify, p_type);
 }
 
-void _err_print_error(const char *p_function, const char *p_file, int p_line, const String &p_error, const String &p_message, ErrorHandlerType p_type) {
-	_err_print_error(p_function, p_file, p_line, p_error.utf8().get_data(), p_message.utf8().get_data(), p_type);
+void _err_print_error(const char *p_function, const char *p_file, int p_line, const String &p_error, const String &p_message, bool p_editor_notify, ErrorHandlerType p_type) {
+	_err_print_error(p_function, p_file, p_line, p_error.utf8().get_data(), p_message.utf8().get_data(), p_editor_notify, p_type);
 }
 
-void _err_print_index_error(const char *p_function, const char *p_file, int p_line, int64_t p_index, int64_t p_size, const char *p_index_str, const char *p_size_str, const char *p_message, bool fatal) {
-	String fstr(fatal ? "FATAL: " : "");
+// Index errors. (All combinations of p_message as String or char*.)
+void _err_print_index_error(const char *p_function, const char *p_file, int p_line, int64_t p_index, int64_t p_size, const char *p_index_str, const char *p_size_str, const char *p_message, bool p_editor_notify, bool p_fatal) {
+	String fstr(p_fatal ? "FATAL: " : "");
 	String err(fstr + "Index " + p_index_str + " = " + itos(p_index) + " is out of bounds (" + p_size_str + " = " + itos(p_size) + ").");
 	_err_print_error(p_function, p_file, p_line, err.utf8().get_data(), p_message);
 }
 
-void _err_print_index_error(const char *p_function, const char *p_file, int p_line, int64_t p_index, int64_t p_size, const char *p_index_str, const char *p_size_str, const String &p_message, bool fatal) {
-	_err_print_index_error(p_function, p_file, p_line, p_index, p_size, p_index_str, p_size_str, p_message.utf8().get_data(), fatal);
+void _err_print_index_error(const char *p_function, const char *p_file, int p_line, int64_t p_index, int64_t p_size, const char *p_index_str, const char *p_size_str, const String &p_message, bool p_editor_notify, bool p_fatal) {
+	_err_print_index_error(p_function, p_file, p_line, p_index, p_size, p_index_str, p_size_str, p_message.utf8().get_data(), p_fatal);
 }
diff --git a/core/error/error_macros.h b/core/error/error_macros.h
index 1bed8d366b..4eb862dce2 100644
--- a/core/error/error_macros.h
+++ b/core/error/error_macros.h
@@ -46,7 +46,7 @@ enum ErrorHandlerType {
 
 // Pointer to the error handler printing function. Reassign to any function to have errors printed.
 // Parameters: userdata, function, file, line, error, explanation, type.
-typedef void (*ErrorHandlerFunc)(void *, const char *, const char *, int p_line, const char *, const char *, ErrorHandlerType p_type);
+typedef void (*ErrorHandlerFunc)(void *, const char *, const char *, int p_line, const char *, const char *, bool p_editor_notify, ErrorHandlerType p_type);
 
 struct ErrorHandlerList {
 	ErrorHandlerFunc errfunc = nullptr;
@@ -61,14 +61,14 @@ void add_error_handler(ErrorHandlerList *p_handler);
 void remove_error_handler(ErrorHandlerList *p_handler);
 
 // Functions used by the error macros.
-void _err_print_error(const char *p_function, const char *p_file, int p_line, const char *p_error, ErrorHandlerType p_type = ERR_HANDLER_ERROR);
-void _err_print_error(const char *p_function, const char *p_file, int p_line, const String &p_error, ErrorHandlerType p_type = ERR_HANDLER_ERROR);
-void _err_print_error(const char *p_function, const char *p_file, int p_line, const char *p_error, const char *p_message, ErrorHandlerType p_type = ERR_HANDLER_ERROR);
-void _err_print_error(const char *p_function, const char *p_file, int p_line, const String &p_error, const char *p_message, ErrorHandlerType p_type = ERR_HANDLER_ERROR);
-void _err_print_error(const char *p_function, const char *p_file, int p_line, const char *p_error, const String &p_message, ErrorHandlerType p_type = ERR_HANDLER_ERROR);
-void _err_print_error(const char *p_function, const char *p_file, int p_line, const String &p_error, const String &p_message, ErrorHandlerType p_type = ERR_HANDLER_ERROR);
-void _err_print_index_error(const char *p_function, const char *p_file, int p_line, int64_t p_index, int64_t p_size, const char *p_index_str, const char *p_size_str, const char *p_message = "", bool fatal = false);
-void _err_print_index_error(const char *p_function, const char *p_file, int p_line, int64_t p_index, int64_t p_size, const char *p_index_str, const char *p_size_str, const String &p_message, bool fatal = false);
+void _err_print_error(const char *p_function, const char *p_file, int p_line, const char *p_error, bool p_editor_notify = false, ErrorHandlerType p_type = ERR_HANDLER_ERROR);
+void _err_print_error(const char *p_function, const char *p_file, int p_line, const String &p_error, bool p_editor_notify = false, ErrorHandlerType p_type = ERR_HANDLER_ERROR);
+void _err_print_error(const char *p_function, const char *p_file, int p_line, const char *p_error, const char *p_message, bool p_editor_notify = false, ErrorHandlerType p_type = ERR_HANDLER_ERROR);
+void _err_print_error(const char *p_function, const char *p_file, int p_line, const String &p_error, const char *p_message, bool p_editor_notify = false, ErrorHandlerType p_type = ERR_HANDLER_ERROR);
+void _err_print_error(const char *p_function, const char *p_file, int p_line, const char *p_error, const String &p_message, bool p_editor_notify = false, ErrorHandlerType p_type = ERR_HANDLER_ERROR);
+void _err_print_error(const char *p_function, const char *p_file, int p_line, const String &p_error, const String &p_message, bool p_editor_notify = false, ErrorHandlerType p_type = ERR_HANDLER_ERROR);
+void _err_print_index_error(const char *p_function, const char *p_file, int p_line, int64_t p_index, int64_t p_size, const char *p_index_str, const char *p_size_str, const char *p_message = "", bool p_editor_notify = false, bool fatal = false);
+void _err_print_index_error(const char *p_function, const char *p_file, int p_line, int64_t p_index, int64_t p_size, const char *p_index_str, const char *p_size_str, const String &p_message, bool p_editor_notify = false, bool fatal = false);
 
 #ifdef __GNUC__
 //#define FUNCTION_STR __PRETTY_FUNCTION__ - too annoying
@@ -136,6 +136,17 @@ void _err_print_index_error(const char *p_function, const char *p_file, int p_li
 		((void)0)
 
 /**
+ * Ensures an integer index `m_index` is less than `m_size` and greater than or equal to 0.
+ * If not, prints `m_msg`, notifies in the editor, and the current function returns.
+ */
+#define ERR_FAIL_INDEX_EDMSG(m_index, m_size, m_msg)                                                                         \
+	if (unlikely((m_index) < 0 || (m_index) >= (m_size))) {                                                                  \
+		_err_print_index_error(FUNCTION_STR, __FILE__, __LINE__, m_index, m_size, _STR(m_index), _STR(m_size), m_msg, true); \
+		return;                                                                                                              \
+	} else                                                                                                                   \
+		((void)0)
+
+/**
  * Try using `ERR_FAIL_INDEX_V_MSG`.
  * Only use this macro if there is no sensible error message.
  *
@@ -161,6 +172,17 @@ void _err_print_index_error(const char *p_function, const char *p_file, int p_li
 		((void)0)
 
 /**
+ * Ensures an integer index `m_index` is less than `m_size` and greater than or equal to 0.
+ * If not, prints `m_msg`, notifies in the editor, and the current function returns `m_retval`.
+ */
+#define ERR_FAIL_INDEX_V_EDMSG(m_index, m_size, m_retval, m_msg)                                                             \
+	if (unlikely((m_index) < 0 || (m_index) >= (m_size))) {                                                                  \
+		_err_print_index_error(FUNCTION_STR, __FILE__, __LINE__, m_index, m_size, _STR(m_index), _STR(m_size), m_msg, true); \
+		return m_retval;                                                                                                     \
+	} else                                                                                                                   \
+		((void)0)
+
+/**
  * Try using `ERR_FAIL_INDEX_MSG` or `ERR_FAIL_INDEX_V_MSG`.
  * Only use this macro if there is no sensible fallback i.e. the error is unrecoverable, and
  * there is no sensible error message.
@@ -215,6 +237,16 @@ void _err_print_index_error(const char *p_function, const char *p_file, int p_li
 		return;                                                                                                        \
 	} else                                                                                                             \
 		((void)0)
+/**
+ * Ensures an unsigned integer index `m_index` is less than `m_size`.
+ * If not, prints `m_msg`, notifies in the editor, and the current function returns.
+ */
+#define ERR_FAIL_UNSIGNED_INDEX_EDMSG(m_index, m_size, m_msg)                                                                \
+	if (unlikely((m_index) >= (m_size))) {                                                                                   \
+		_err_print_index_error(FUNCTION_STR, __FILE__, __LINE__, m_index, m_size, _STR(m_index), _STR(m_size), m_msg, true); \
+		return;                                                                                                              \
+	} else                                                                                                                   \
+		((void)0)
 
 /**
  * Try using `ERR_FAIL_UNSIGNED_INDEX_V_MSG`.
@@ -242,6 +274,17 @@ void _err_print_index_error(const char *p_function, const char *p_file, int p_li
 		((void)0)
 
 /**
+ * Ensures an unsigned integer index `m_index` is less than `m_size`.
+ * If not, prints `m_msg`, notifies in the editor, and the current function returns `m_retval`.
+ */
+#define ERR_FAIL_UNSIGNED_INDEX_V_EDMSG(m_index, m_size, m_retval, m_msg)                                                    \
+	if (unlikely((m_index) >= (m_size))) {                                                                                   \
+		_err_print_index_error(FUNCTION_STR, __FILE__, __LINE__, m_index, m_size, _STR(m_index), _STR(m_size), m_msg, true); \
+		return m_retval;                                                                                                     \
+	} else                                                                                                                   \
+		((void)0)
+
+/**
  * Try using `ERR_FAIL_UNSIGNED_INDEX_MSG` or `ERR_FAIL_UNSIGNED_INDEX_V_MSG`.
  * Only use this macro if there is no sensible fallback i.e. the error is unrecoverable, and
  * there is no sensible error message.
@@ -298,6 +341,17 @@ void _err_print_index_error(const char *p_function, const char *p_file, int p_li
 		((void)0)
 
 /**
+ * Ensures a pointer `m_param` is not null.
+ * If it is null, prints `m_msg`, notifies in the editor, and the current function returns.
+ */
+#define ERR_FAIL_NULL_EDMSG(m_param, m_msg)                                                                          \
+	if (unlikely(m_param == nullptr)) {                                                                              \
+		_err_print_error(FUNCTION_STR, __FILE__, __LINE__, "Parameter \"" _STR(m_param) "\" is null.", m_msg, true); \
+		return;                                                                                                      \
+	} else                                                                                                           \
+		((void)0)
+
+/**
  * Try using `ERR_FAIL_NULL_V_MSG`.
  * Only use this macro if there is no sensible error message.
  *
@@ -323,6 +377,17 @@ void _err_print_index_error(const char *p_function, const char *p_file, int p_li
 		((void)0)
 
 /**
+ * Ensures a pointer `m_param` is not null.
+ * If it is null, prints `m_msg`, notifies in the editor, and the current function returns `m_retval`.
+ */
+#define ERR_FAIL_NULL_V_EDMSG(m_param, m_retval, m_msg)                                                              \
+	if (unlikely(m_param == nullptr)) {                                                                              \
+		_err_print_error(FUNCTION_STR, __FILE__, __LINE__, "Parameter \"" _STR(m_param) "\" is null.", m_msg, true); \
+		return m_retval;                                                                                             \
+	} else                                                                                                           \
+		((void)0)
+
+/**
  * Try using `ERR_FAIL_COND_MSG`.
  * Only use this macro if there is no sensible error message.
  * If checking for null use ERR_FAIL_NULL_MSG instead.
@@ -353,6 +418,20 @@ void _err_print_index_error(const char *p_function, const char *p_file, int p_li
 		((void)0)
 
 /**
+ * Ensures `m_cond` is false.
+ * If `m_cond` is true, prints `m_msg`, notifies in the editor, and the current function returns.
+ *
+ * If checking for null use ERR_FAIL_NULL_MSG instead.
+ * If checking index bounds use ERR_FAIL_INDEX_MSG instead.
+ */
+#define ERR_FAIL_COND_EDMSG(m_cond, m_msg)                                                                          \
+	if (unlikely(m_cond)) {                                                                                         \
+		_err_print_error(FUNCTION_STR, __FILE__, __LINE__, "Condition \"" _STR(m_cond) "\" is true.", m_msg, true); \
+		return;                                                                                                     \
+	} else                                                                                                          \
+		((void)0)
+
+/**
  * Try using `ERR_FAIL_COND_V_MSG`.
  * Only use this macro if there is no sensible error message.
  * If checking for null use ERR_FAIL_NULL_V_MSG instead.
@@ -383,6 +462,20 @@ void _err_print_index_error(const char *p_function, const char *p_file, int p_li
 		((void)0)
 
 /**
+ * Ensures `m_cond` is false.
+ * If `m_cond` is true, prints `m_msg`, notifies in the editor, and the current function returns `m_retval`.
+ *
+ * If checking for null use ERR_FAIL_NULL_V_MSG instead.
+ * If checking index bounds use ERR_FAIL_INDEX_V_MSG instead.
+ */
+#define ERR_FAIL_COND_V_EDMSG(m_cond, m_retval, m_msg)                                                                                         \
+	if (unlikely(m_cond)) {                                                                                                                    \
+		_err_print_error(FUNCTION_STR, __FILE__, __LINE__, "Condition \"" _STR(m_cond) "\" is true. Returning: " _STR(m_retval), m_msg, true); \
+		return m_retval;                                                                                                                       \
+	} else                                                                                                                                     \
+		((void)0)
+
+/**
  * Try using `ERR_CONTINUE_MSG`.
  * Only use this macro if there is no sensible error message.
  *
@@ -408,6 +501,17 @@ void _err_print_index_error(const char *p_function, const char *p_file, int p_li
 		((void)0)
 
 /**
+ * Ensures `m_cond` is false.
+ * If `m_cond` is true, prints `m_msg`, notifies in the editor, and the current loop continues.
+ */
+#define ERR_CONTINUE_EDMSG(m_cond, m_msg)                                                                                       \
+	if (unlikely(m_cond)) {                                                                                                     \
+		_err_print_error(FUNCTION_STR, __FILE__, __LINE__, "Condition \"" _STR(m_cond) "\" is true. Continuing.", m_msg, true); \
+		continue;                                                                                                               \
+	} else                                                                                                                      \
+		((void)0)
+
+/**
  * Try using `ERR_BREAK_MSG`.
  * Only use this macro if there is no sensible error message.
  *
@@ -433,6 +537,17 @@ void _err_print_index_error(const char *p_function, const char *p_file, int p_li
 		((void)0)
 
 /**
+ * Ensures `m_cond` is false.
+ * If `m_cond` is true, prints `m_msg`, notifies in the editor, and the current loop breaks.
+ */
+#define ERR_BREAK_EDMSG(m_cond, m_msg)                                                                                        \
+	if (unlikely(m_cond)) {                                                                                                   \
+		_err_print_error(FUNCTION_STR, __FILE__, __LINE__, "Condition \"" _STR(m_cond) "\" is true. Breaking.", m_msg, true); \
+		break;                                                                                                                \
+	} else                                                                                                                    \
+		((void)0)
+
+/**
  * Try using `ERR_FAIL_COND_MSG` or `ERR_FAIL_COND_V_MSG`.
  * Only use this macro if there is no sensible fallback i.e. the error is unrecoverable, and
  * there is no sensible error message.
@@ -491,6 +606,19 @@ void _err_print_index_error(const char *p_function, const char *p_file, int p_li
 		((void)0)
 
 /**
+ * Try using `ERR_FAIL_COND_MSG`.
+ * Only use this macro if more complex error detection or recovery is required.
+ *
+ * Prints `m_msg`, notifies in the editor, and the current function returns.
+ */
+#define ERR_FAIL_EDMSG(m_msg)                                                                       \
+	if (true) {                                                                                     \
+		_err_print_error(FUNCTION_STR, __FILE__, __LINE__, "Method/function failed.", m_msg, true); \
+		return;                                                                                     \
+	} else                                                                                          \
+		((void)0)
+
+/**
  * Try using `ERR_FAIL_COND_V_MSG` or `ERR_FAIL_V_MSG`.
  * Only use this macro if more complex error detection or recovery is required, and
  * there is no sensible error message.
@@ -518,6 +646,19 @@ void _err_print_index_error(const char *p_function, const char *p_file, int p_li
 		((void)0)
 
 /**
+ * Try using `ERR_FAIL_COND_V_MSG`.
+ * Only use this macro if more complex error detection or recovery is required.
+ *
+ * Prints `m_msg`, notifies in the editor, and the current function returns `m_retval`.
+ */
+#define ERR_FAIL_V_EDMSG(m_retval, m_msg)                                                                                      \
+	if (true) {                                                                                                                \
+		_err_print_error(FUNCTION_STR, __FILE__, __LINE__, "Method/function failed. Returning: " _STR(m_retval), m_msg, true); \
+		return m_retval;                                                                                                       \
+	} else                                                                                                                     \
+		((void)0)
+
+/**
  * Try using `ERR_FAIL_COND_MSG`, `ERR_FAIL_COND_V_MSG`, `ERR_CONTINUE_MSG` or ERR_BREAK_MSG.
  * Only use this macro at the start of a function that has not been implemented yet, or
  * if more complex error detection or recovery is required.
@@ -528,6 +669,16 @@ void _err_print_index_error(const char *p_function, const char *p_file, int p_li
 	_err_print_error(FUNCTION_STR, __FILE__, __LINE__, m_msg)
 
 /**
+ * Try using `ERR_FAIL_COND_MSG`, `ERR_FAIL_COND_V_MSG`, `ERR_CONTINUE_MSG` or ERR_BREAK_MSG.
+ * Only use this macro at the start of a function that has not been implemented yet, or
+ * if more complex error detection or recovery is required.
+ *
+ * Prints `m_msg` and notifies the editor.
+ */
+#define ERR_PRINT_ED(m_msg) \
+	_err_print_error(FUNCTION_STR, __FILE__, __LINE__, m_msg, )
+
+/**
  * Prints `m_msg` once during the application lifetime.
  */
 #define ERR_PRINT_ONCE(m_msg)                                          \
@@ -540,6 +691,19 @@ void _err_print_index_error(const char *p_function, const char *p_file, int p_li
 	} else                                                             \
 		((void)0)
 
+/**
+ * Prints `m_msg` and notifies the editor once during the application lifetime.
+ */
+#define ERR_PRINT_ONCE_ED(m_msg)                                             \
+	if (true) {                                                              \
+		static bool first_print = true;                                      \
+		if (first_print) {                                                   \
+			_err_print_error(FUNCTION_STR, __FILE__, __LINE__, m_msg, true); \
+			first_print = false;                                             \
+		}                                                                    \
+	} else                                                                   \
+		((void)0)
+
 // Print warning message macros.
 
 /**
@@ -548,52 +712,75 @@ void _err_print_index_error(const char *p_function, const char *p_file, int p_li
  * If warning about deprecated usage, use `WARN_DEPRECATED` or `WARN_DEPRECATED_MSG` instead.
  */
 #define WARN_PRINT(m_msg) \
-	_err_print_error(FUNCTION_STR, __FILE__, __LINE__, m_msg, ERR_HANDLER_WARNING)
+	_err_print_error(FUNCTION_STR, __FILE__, __LINE__, m_msg, false, ERR_HANDLER_WARNING)
+
+/**
+ * Prints `m_msg` and notifies the editor.
+ *
+ * If warning about deprecated usage, use `WARN_DEPRECATED` or `WARN_DEPRECATED_MSG` instead.
+ */
+#define WARN_PRINT_ED(m_msg) \
+	_err_print_error(FUNCTION_STR, __FILE__, __LINE__, m_msg, true, ERR_HANDLER_WARNING)
 
 /**
  * Prints `m_msg` once during the application lifetime.
  *
  * If warning about deprecated usage, use `WARN_DEPRECATED` or `WARN_DEPRECATED_MSG` instead.
  */
-#define WARN_PRINT_ONCE(m_msg)                                                              \
-	if (true) {                                                                             \
-		static bool first_print = true;                                                     \
-		if (first_print) {                                                                  \
-			_err_print_error(FUNCTION_STR, __FILE__, __LINE__, m_msg, ERR_HANDLER_WARNING); \
-			first_print = false;                                                            \
-		}                                                                                   \
-	} else                                                                                  \
+#define WARN_PRINT_ONCE(m_msg)                                                                     \
+	if (true) {                                                                                    \
+		static bool first_print = true;                                                            \
+		if (first_print) {                                                                         \
+			_err_print_error(FUNCTION_STR, __FILE__, __LINE__, m_msg, false, ERR_HANDLER_WARNING); \
+			first_print = false;                                                                   \
+		}                                                                                          \
+	} else                                                                                         \
 		((void)0)
 
-// Print deprecated warning message macros.
-
 /**
- * Warns that the current function is deprecated.
+ * Prints `m_msg` and notifies the editor once during the application lifetime.
+ *
+ * If warning about deprecated usage, use `WARN_DEPRECATED` or `WARN_DEPRECATED_MSG` instead.
  */
-#define WARN_DEPRECATED                                                                                                                                    \
-	if (true) {                                                                                                                                            \
-		static SafeFlag warning_shown;                                                                                                                     \
-		if (!warning_shown.is_set()) {                                                                                                                     \
-			_err_print_error(FUNCTION_STR, __FILE__, __LINE__, "This method has been deprecated and will be removed in the future.", ERR_HANDLER_WARNING); \
-			warning_shown.set();                                                                                                                           \
-		}                                                                                                                                                  \
-	} else                                                                                                                                                 \
+#define WARN_PRINT_ONCE_ED(m_msg)                                                                 \
+	if (true) {                                                                                   \
+		static bool first_print = true;                                                           \
+		if (first_print) {                                                                        \
+			_err_print_error(FUNCTION_STR, __FILE__, __LINE__, m_msg, true, ERR_HANDLER_WARNING); \
+			first_print = false;                                                                  \
+		}                                                                                         \
+	} else                                                                                        \
 		((void)0)
 
+// Print deprecated warning message macros.
+
 /**
- * Warns that the current function is deprecated and prints `m_msg`.
+ * Warns that the current function is deprecated.
  */
-#define WARN_DEPRECATED_MSG(m_msg)                                                                                                                                \
+#define WARN_DEPRECATED                                                                                                                                           \
 	if (true) {                                                                                                                                                   \
 		static SafeFlag warning_shown;                                                                                                                            \
 		if (!warning_shown.is_set()) {                                                                                                                            \
-			_err_print_error(FUNCTION_STR, __FILE__, __LINE__, "This method has been deprecated and will be removed in the future.", m_msg, ERR_HANDLER_WARNING); \
+			_err_print_error(FUNCTION_STR, __FILE__, __LINE__, "This method has been deprecated and will be removed in the future.", false, ERR_HANDLER_WARNING); \
 			warning_shown.set();                                                                                                                                  \
 		}                                                                                                                                                         \
 	} else                                                                                                                                                        \
 		((void)0)
 
 /**
+ * Warns that the current function is deprecated and prints `m_msg`.
+ */
+#define WARN_DEPRECATED_MSG(m_msg)                                                                                                                                       \
+	if (true) {                                                                                                                                                          \
+		static SafeFlag warning_shown;                                                                                                                                   \
+		if (!warning_shown.is_set()) {                                                                                                                                   \
+			_err_print_error(FUNCTION_STR, __FILE__, __LINE__, "This method has been deprecated and will be removed in the future.", m_msg, false, ERR_HANDLER_WARNING); \
+			warning_shown.set();                                                                                                                                         \
+		}                                                                                                                                                                \
+	} else                                                                                                                                                               \
+		((void)0)
+
+/**
  * Do not use.
  * If the application should never reach this point use CRASH_NOW_MSG(m_msg) to explain why.
  *
diff --git a/core/extension/gdnative_interface.cpp b/core/extension/gdnative_interface.cpp
index ff09b0b86c..4770c9c65f 100644
--- a/core/extension/gdnative_interface.cpp
+++ b/core/extension/gdnative_interface.cpp
@@ -51,13 +51,13 @@ static void gdnative_free(void *p_mem) {
 
 // Helper print functions.
 static void gdnative_print_error(const char *p_description, const char *p_function, const char *p_file, int32_t p_line) {
-	_err_print_error(p_function, p_file, p_line, p_description, ERR_HANDLER_ERROR);
+	_err_print_error(p_function, p_file, p_line, p_description, false, ERR_HANDLER_ERROR);
 }
 static void gdnative_print_warning(const char *p_description, const char *p_function, const char *p_file, int32_t p_line) {
-	_err_print_error(p_function, p_file, p_line, p_description, ERR_HANDLER_WARNING);
+	_err_print_error(p_function, p_file, p_line, p_description, false, ERR_HANDLER_WARNING);
 }
 static void gdnative_print_script_error(const char *p_description, const char *p_function, const char *p_file, int32_t p_line) {
-	_err_print_error(p_function, p_file, p_line, p_description, ERR_HANDLER_SCRIPT);
+	_err_print_error(p_function, p_file, p_line, p_description, false, ERR_HANDLER_SCRIPT);
 }
 
 // Variant functions
diff --git a/core/io/logger.cpp b/core/io/logger.cpp
index 09539f716c..b68a8b20a5 100644
--- a/core/io/logger.cpp
+++ b/core/io/logger.cpp
@@ -50,7 +50,7 @@ void Logger::set_flush_stdout_on_print(bool value) {
 	_flush_stdout_on_print = value;
 }
 
-void Logger::log_error(const char *p_function, const char *p_file, int p_line, const char *p_code, const char *p_rationale, ErrorType p_type) {
+void Logger::log_error(const char *p_function, const char *p_file, int p_line, const char *p_code, const char *p_rationale, bool p_editor_notify, ErrorType p_type) {
 	if (!should_log(true)) {
 		return;
 	}
@@ -81,7 +81,11 @@ void Logger::log_error(const char *p_function, const char *p_file, int p_line, c
 		err_details = p_code;
 	}
 
-	logf_error("%s: %s\n", err_type, err_details);
+	if (p_editor_notify) {
+		logf_error("%s: %s\n", err_type, err_details);
+	} else {
+		logf_error("USER %s: %s\n", err_type, err_details);
+	}
 	logf_error("   at: %s (%s:%i) - %s\n", p_function, p_file, p_line, p_code);
 }
 
@@ -256,7 +260,7 @@ void CompositeLogger::logv(const char *p_format, va_list p_list, bool p_err) {
 	}
 }
 
-void CompositeLogger::log_error(const char *p_function, const char *p_file, int p_line, const char *p_code, const char *p_rationale, ErrorType p_type) {
+void CompositeLogger::log_error(const char *p_function, const char *p_file, int p_line, const char *p_code, const char *p_rationale, bool p_editor_notify, ErrorType p_type) {
 	if (!should_log(true)) {
 		return;
 	}
diff --git a/core/io/logger.h b/core/io/logger.h
index ccf68562d6..f244f70e7e 100644
--- a/core/io/logger.h
+++ b/core/io/logger.h
@@ -54,7 +54,7 @@ public:
 	static void set_flush_stdout_on_print(bool value);
 
 	virtual void logv(const char *p_format, va_list p_list, bool p_err) _PRINTF_FORMAT_ATTRIBUTE_2_0 = 0;
-	virtual void log_error(const char *p_function, const char *p_file, int p_line, const char *p_code, const char *p_rationale, ErrorType p_type = ERR_ERROR);
+	virtual void log_error(const char *p_function, const char *p_file, int p_line, const char *p_code, const char *p_rationale, bool p_editor_notify = false, ErrorType p_type = ERR_ERROR);
 
 	void logf(const char *p_format, ...) _PRINTF_FORMAT_ATTRIBUTE_2_3;
 	void logf_error(const char *p_format, ...) _PRINTF_FORMAT_ATTRIBUTE_2_3;
@@ -103,7 +103,7 @@ public:
 	CompositeLogger(Vector<Logger *> p_loggers);
 
 	virtual void logv(const char *p_format, va_list p_list, bool p_err) _PRINTF_FORMAT_ATTRIBUTE_2_0;
-	virtual void log_error(const char *p_function, const char *p_file, int p_line, const char *p_code, const char *p_rationale, ErrorType p_type = ERR_ERROR);
+	virtual void log_error(const char *p_function, const char *p_file, int p_line, const char *p_code, const char *p_rationale, bool p_editor_notify, ErrorType p_type = ERR_ERROR);
 
 	void add_logger(Logger *p_logger);
 
diff --git a/core/os/os.cpp b/core/os/os.cpp
index 12f85858c3..7404ffdcd5 100644
--- a/core/os/os.cpp
+++ b/core/os/os.cpp
@@ -75,12 +75,12 @@ void OS::add_logger(Logger *p_logger) {
 	}
 }
 
-void OS::print_error(const char *p_function, const char *p_file, int p_line, const char *p_code, const char *p_rationale, Logger::ErrorType p_type) {
+void OS::print_error(const char *p_function, const char *p_file, int p_line, const char *p_code, const char *p_rationale, bool p_editor_notify, Logger::ErrorType p_type) {
 	if (!_stderr_enabled) {
 		return;
 	}
 
-	_logger->log_error(p_function, p_file, p_line, p_code, p_rationale, p_type);
+	_logger->log_error(p_function, p_file, p_line, p_code, p_rationale, p_editor_notify, p_type);
 }
 
 void OS::print(const char *p_format, ...) {
diff --git a/core/os/os.h b/core/os/os.h
index 29d33ce4f0..6d7bc47407 100644
--- a/core/os/os.h
+++ b/core/os/os.h
@@ -110,7 +110,7 @@ public:
 
 	static OS *get_singleton();
 
-	void print_error(const char *p_function, const char *p_file, int p_line, const char *p_code, const char *p_rationale, Logger::ErrorType p_type = Logger::ERR_ERROR);
+	void print_error(const char *p_function, const char *p_file, int p_line, const char *p_code, const char *p_rationale, bool p_editor_notify = false, Logger::ErrorType p_type = Logger::ERR_ERROR);
 	void print(const char *p_format, ...) _PRINTF_FORMAT_ATTRIBUTE_2_3;
 	void printerr(const char *p_format, ...) _PRINTF_FORMAT_ATTRIBUTE_2_3;