godot-tscn-source-generator

Generates C# source code within Visual Studio 2022 based on Godot project.godot and .tscn files. Based on Righthand.GodotTscnParser which in turn uses ANTLR.

NOTE: Currently in alpha stage. If you have pull requests, problems or improvements ideas, feel free to create Issues. Also .tscn parser is probably not yet complete. If you find a case when generator doesn't create any code it could be that it failed parsing .tscn file (check build output). In such case I'd be interested in your .tscn file so I can update the parser.

Quick start

1. Open a Godot solution in Visual Studio.
2. Mark all .tscn files that will be used for code generation as "C# analyzer additional file" - select file in Solution Explorer and set its Build Action to C# analyzer additional file. Or alternatively add entry manually to .csproj as

<ItemGroup>
	<AdditionalFiles Include="FILENAME.cs" />
</ItemGroup>

where FILENAME should be replaced with relative path to file. Add AdditionalFiles node for each file.

3. Install Righthand.GodotSourceGenerator from NuGet. Make sure you check "Include prerelease" as it is currently marked so.
4. Build project.
5. Use generated strong typed calls.

Sample generated code:

partial class Player
{
	public record struct AnimatedSprite2DNode
	{
		// ...
		public AnimatedSprite2D Instance => owner.GetNode<AnimatedSprite2D>("AnimatedSprite2D");
		// ...
		public static class SpriteFrames
		{
			public static StringName Up { get; } = "up";
			public static StringName Walk { get; } = "walk";
		}
	}
	public AnimatedSprite2DNode AnimatedSprite2D => new AnimatedSprite2DNode(this);
}

public static partial class InputActions
{
	public static StringName MoveLeft { get; } = "move_left";
	public static StringName MoveRight { get; } = "move_right";
	public static StringName MoveUp { get; } = "move_up";
	public static StringName MoveDown { get; } = "move_down";
	public static StringName StartGame { get; } = "start_game";
}

public static class Scenes
{
	public static readonly StringName Game = "res://Scenes/game.tscn";
	public static readonly StringName Hud = "res://Scenes/hud.tscn";
	public static readonly StringName Level = "res://Scenes/level.tscn";
	public static readonly StringName Start = "res://Scenes/start.tscn";
}

If you have a class named Player you can use

a) AnimatedSprite2D.Instance method without explicilty using generic argument or node name.

b) node.Animation = AnimatedSprite2DNode.SpriteFrames.Up instead of node.Animation = "up"

c) if (Input.IsActionPressed(InputActions.MoveRight)) instead of if (Input.IsActionPressed("move_right)). Note that InputActions are global constants.

d) Scenes.Level instead of "res://Scenes/level.tscn". If scenes are not within a Scenes directory, that root class will be PackedScenes and access will be like PackedScenes.SomeDirectory.SomeScene.

Besides providing Intellisense auto completition, it also helps when nodes are renamed in .tscn file. If this happens, code won't compile anymore and it would require update.

Generated code

• Strong typed GetNode(name) calls
• Animation name constants
• Input actions names
• Node groups
• Supports node nesting
• Strong typed script resources

Sample

• See refactored Dodge The Creeps Refactored

Roadmap

More code generation.