C# Truncate instead of round in Vector2/3/4 to Vector2I/3I/4I conversion

(cherry picked from commit f53d3382af3ce04c924e6f92bb4c81ba349cfd8f)

3 files changed, 15 insertions, 18 deletions

diff --git a/modules/mono/glue/GodotSharp/GodotSharp/Core/Vector2I.cs b/modules/mono/glue/GodotSharp/GodotSharp/Core/Vector2I.cs
index e849939ebb..0dac8205b6 100644
--- a/modules/mono/glue/GodotSharp/GodotSharp/Core/Vector2I.cs
+++ b/modules/mono/glue/GodotSharp/GodotSharp/Core/Vector2I.cs
@@ -504,15 +504,15 @@ namespace Godot
         }
 
         /// <summary>
-        /// Converts a <see cref="Vector2"/> to a <see cref="Vector2I"/>.
+        /// Converts a <see cref="Vector2"/> to a <see cref="Vector2I"/> by truncating
+        /// components' fractional parts (rounding towards zero). For a different
+        /// behavior consider passing the result of <see cref="Vector2.Ceil"/>,
+        /// <see cref="Vector2.Floor"/> or <see cref="Vector2.Round"/> to this conversion operator instead.
         /// </summary>
         /// <param name="value">The vector to convert.</param>
         public static explicit operator Vector2I(Vector2 value)
         {
-            return new Vector2I(
-                Mathf.RoundToInt(value.X),
-                Mathf.RoundToInt(value.Y)
-            );
+            return new Vector2I((int)value.X, (int)value.Y);
         }
 
         /// <summary>
diff --git a/modules/mono/glue/GodotSharp/GodotSharp/Core/Vector3I.cs b/modules/mono/glue/GodotSharp/GodotSharp/Core/Vector3I.cs
index fe899527ef..a2927533f8 100644
--- a/modules/mono/glue/GodotSharp/GodotSharp/Core/Vector3I.cs
+++ b/modules/mono/glue/GodotSharp/GodotSharp/Core/Vector3I.cs
@@ -559,16 +559,15 @@ namespace Godot
         }
 
         /// <summary>
-        /// Converts a <see cref="Vector3"/> to a <see cref="Vector3I"/>.
+        /// Converts a <see cref="Vector3"/> to a <see cref="Vector3I"/> by truncating
+        /// components' fractional parts (rounding towards zero). For a different
+        /// behavior consider passing the result of <see cref="Vector3.Ceil"/>,
+        /// <see cref="Vector3.Floor"/> or <see cref="Vector3.Round"/> to this conversion operator instead.
         /// </summary>
         /// <param name="value">The vector to convert.</param>
         public static explicit operator Vector3I(Vector3 value)
         {
-            return new Vector3I(
-                Mathf.RoundToInt(value.X),
-                Mathf.RoundToInt(value.Y),
-                Mathf.RoundToInt(value.Z)
-            );
+            return new Vector3I((int)value.X, (int)value.Y, (int)value.Z);
         }
 
         /// <summary>
diff --git a/modules/mono/glue/GodotSharp/GodotSharp/Core/Vector4I.cs b/modules/mono/glue/GodotSharp/GodotSharp/Core/Vector4I.cs
index f065327066..bb552b939d 100644
--- a/modules/mono/glue/GodotSharp/GodotSharp/Core/Vector4I.cs
+++ b/modules/mono/glue/GodotSharp/GodotSharp/Core/Vector4I.cs
@@ -580,17 +580,15 @@ namespace Godot
         }
 
         /// <summary>
-        /// Converts a <see cref="Vector4"/> to a <see cref="Vector4I"/>.
+        /// Converts a <see cref="Vector4"/> to a <see cref="Vector4I"/> by truncating
+        /// components' fractional parts (rounding towards zero). For a different
+        /// behavior consider passing the result of <see cref="Vector4.Ceil"/>,
+        /// <see cref="Vector4.Floor"/> or <see cref="Vector4.Round"/> to this conversion operator instead.
         /// </summary>
         /// <param name="value">The vector to convert.</param>
         public static explicit operator Vector4I(Vector4 value)
         {
-            return new Vector4I(
-                Mathf.RoundToInt(value.X),
-                Mathf.RoundToInt(value.Y),
-                Mathf.RoundToInt(value.Z),
-                Mathf.RoundToInt(value.W)
-            );
+            return new Vector4I((int)value.X, (int)value.Y, (int)value.Z, (int)value.W);
         }
 
         /// <summary>