Add Godot client

1 files changed, 74 insertions, 0 deletions

diff --git a/client/Root.cs b/client/Root.cs
new file mode 100644
index 0000000..e39a485
--- /dev/null
+++ b/client/Root.cs
@@ -0,0 +1,74 @@
+using Godot;
+using System;
+using Djup.Native;
+
+public partial class Root : Node2D
+{
+	private IntPtr native_world;
+	private int[] balls = new int[100];
+	private Random rng = new();
+	private const double Tps = 1d/60d;
+	
+	// Called when the node enters the scene tree for the first time.
+	public unsafe override void _Ready()
+	{
+		RenderingServer.SetDefaultClearColor(Colors.LightGray);
+		
+		native_world = LibDjup.world_create();
+		for (int i = 0; i < balls.Length; i++)
+		{
+			int id = LibDjup.world_create_entity(native_world, EntityKind.Ball);
+			if (id < 0)
+			{
+				throw new Exception("Failed to create entity");
+			}
+			balls[i] = id;
+			Entity *ent;
+			var pos = new Vec2(5f * rng.Next(10), 5f * rng.Next(20));
+			var vel = new Vec2(50f + 5f * rng.Next(10), 50f);
+			ent = LibDjup.world_find_entity(native_world, balls[i]);
+			ent->ball.Position = pos;
+			ent->ball.Velocity = vel;
+		}
+	}
+
+	public override void _ExitTree()
+	{
+		LibDjup.world_free(native_world);
+	}
+
+	private void DrawBall(Ball ball)
+	{
+		//Color color = rng.Next(5) switch
+		//{
+			//0 => Colors.Black,
+			//1 => Colors.Blue,
+			//2 => Colors.Red,
+			//3 => Colors.Green,
+			//4 => Colors.Pink
+		//};
+		Color color = Colors.Blue;
+		this.DrawCircle(new Vector2(ball.Position.X, ball.Position.Y), 5f, color, antialiased: true);
+	}
+
+	public unsafe override void _Draw()
+	{
+		for (int i = 0; i < balls.Length; i++)
+		{
+			DrawBall(LibDjup.world_find_entity(native_world, balls[i])->ball);
+		}
+	}
+
+	public override void _Process(double delta)
+	{
+		this.QueueRedraw();
+	}
+	
+	public override void _PhysicsProcess(double delta)
+	{
+		if (LibDjup.world_tick(native_world, Tps) != 0)
+		{
+			GD.Print("world_tick failed");
+		}
+	}
+}