1 files changed, 75 insertions, 0 deletions
diff --git a/client/World.cs b/client/World.cs
new file mode 100644
index 0000000..8f5dfb6
--- /dev/null
+++ b/client/World.cs
@@ -0,0 +1,75 @@
+using Godot;
+using System;
+using Djup.Native;
+
+public partial class World : Node2D
+{
+	private IntPtr context;
+	private IntPtr currentSnapshot;
+	public const double Tps = 1d/60d;
+
+	public unsafe override void _Ready()
+	{
+		context = LibDjup.physics_context_create(2);
+		currentSnapshot = LibDjup.physics_context_get_snapshot(context);
+	}
+
+	public override void _ExitTree()
+	{
+		LibDjup.physics_context_free(context);
+	}
+
+	public unsafe void PutPlayer(uint id, Djup.Native.Player player)
+	{
+		if (LibDjup.snapshot_put_player(currentSnapshot, id, &player) != 0)
+		{
+			throw new Exception($"Failed to put player {id}");
+		}
+	}
+
+	public void SetPlayerInput(uint playerId, byte input)
+	{
+		int ret = LibDjup.snapshot_set_player_input(currentSnapshot, playerId, input);
+		if (ret != 0)
+		{
+			throw new Exception($"Failed to set input of player {playerId}: {ret}");
+		}
+	}
+
+	private unsafe void DrawPlayer(Djup.Native.Player player)
+	{
+		float radius = 50f;
+		this.DrawCircle(new Vector2(player.Position.X, player.Position.Y), radius, Colors.DarkBlue, antialiased: true);
+		this.DrawCircle(new Vector2(player.Position.X, player.Position.Y), radius * 0.90f, Colors.Blue, antialiased: true);
+	}
+
+	public unsafe override void _Draw()
+	{
+		Snapshot *s = (Snapshot *)currentSnapshot;
+
+		for (int i = 0; i < Constants.WorldMaxPlayers; i++)
+		{
+			var p = s->Players[i];
+			if (p.State == EntityState.Active)
+			{
+				DrawPlayer(p);
+			}
+		}
+	}
+
+	public override void _Process(double delta)
+	{
+		this.QueueRedraw();
+	}
+
+	public override void _PhysicsProcess(double delta)
+	{
+		IntPtr next = LibDjup.physics_context_get_snapshot(context);
+		if (LibDjup.physics_tick(currentSnapshot, Tps, next) != 0)
+		{
+			throw new Exception("World tick failed");
+		}
+		LibDjup.physics_context_return_snapshot(context, currentSnapshot);
+		currentSnapshot = next;
+	}
+}