commands.AddResource

samples/MyBattleground/Program.cs

@@ -27,17 +27,22 @@
 .RunIf(() => true)
 .RunIf((Res<GameStates> state, Res<GameStates> state1, Res<GameStates> state2, Query<Velocity> velQuery) => state.Value == GameStates.InGame);
 
-scheduler.AddSystem((Local<int> i32, Res<string> str) => {
+scheduler.AddSystem((Local<int> i32, Res<string> str, Commands commands) => {
 	Console.WriteLine(i32.Value++);
-});
 
+	commands.AddResource(23ul);
+}, Stages.Startup);
+scheduler.AddSystem((Res<ulong> ul) => {
+	Console.WriteLine(ul.Value++);
+});
 scheduler.AddState<GameStates>();
 scheduler.AddSystem(() => Console.WriteLine("playing the game"))
-	.RunIf((Res<GameStates> state) => state.Value == GameStates.InGame);
+	.RunIf((Res<GameStates> state) => state == GameStates.InGame);
 
 scheduler.AddSystem(() => Console.WriteLine("game paused"))
 	.RunIf((Res<GameStates> state) => state.Value == GameStates.Paused)
-	.RunIf((Query<Position, (With<PlayerTag>, Without<ComponentInfo>)> query) => query.Count() > 0 && query.Single<Position>().X > 0);
+	.RunIf((Query<Position, (With<PlayerTag>, Without<ComponentInfo>)> query)
+		=> query.Count() > 0 && query.Single<Position>().X > 0);
 
 scheduler.AddSystem((Res<GameStates> state) =>
 	state.Value = state.Value switch

src/System.cs

@@ -56,6 +56,7 @@ public Scheduler(World world)
 			_systems[i] = new ();
 
 		AddSystemParam(world);
+		AddSystemParam(new Commands(world, this));
 	}
 
 
@@ -218,12 +219,22 @@ void ISystemParam.New(object arguments)
 
 partial class Commands : ISystemParam
 {
+	private readonly Scheduler _scheduler;
+
 	public Commands() : this(null!) { }
 
+	public Commands(World world, Scheduler scheduler) : this(world)
+		=> _scheduler = scheduler;
+
 	void ISystemParam.New(object arguments)
 	{
 		World = (World) arguments;
 	}
+
+	public void AddResource<T>(T resource)
+	{
+		_scheduler?.AddResource(resource);
+	}
 }
 
 public sealed class Res<T> : ISystemParam
@@ -263,3 +274,26 @@ void ISystemParam.New(object arguments)
 		//throw new Exception("Resources must be initialized using 'scheduler.AddResource<T>' api");
 	}
 }
+
+// public sealed class SystemState : ISystemParam
+// {
+// 	private readonly Scheduler _scheduler;
+
+// 	internal SystemState(Scheduler scheduler)
+// 	{
+// 		_scheduler = scheduler;
+// 	}
+
+// 	public SystemState()
+// 		=> throw new Exception("You are not allowed to initialixze this object by yourself!");
+
+// 	public void AddResource<T>(T resource)
+// 	{
+// 		_scheduler.AddResource(resource);
+// 	}
+
+// 	void ISystemParam.New(object arguments)
+// 	{
+
+// 	}
+// }