Basic drawing

src/main.zig

@@ -10,6 +10,7 @@ pub fn main(init: std.process.Init) !void {
     defer rl.closeWindow();
 
     var sim: Simulator = .init(allocator);
+    defer sim.deinit();
 
     while (!rl.windowShouldClose()) {
         rl.beginDrawing();