Convenience function to addd and remove actors to or from systems.

demo/sprite/sprite.go

@@ -24,8 +24,7 @@ func (g *Game) Setup() {
 	}
 
 	sprite := goga.NewSprite(tex)
-	renderer := goga.GetSystemByName("spriteRenderer")
-	renderer.Add(sprite)
+	goga.AddActor(sprite)
 }
 
 func (g *Game) Update(delta float64) {

sprite.go

@@ -101,20 +101,13 @@ func (s *SpriteRenderer) Add(actor interface{}) bool {
 
 // Removes sprite from renderer.
 func (s *SpriteRenderer) Remove(actor interface{}) bool {
-	sprite, ok := actor.(Sprite)
+	sprite, ok := actor.(*Sprite)
 
 	if !ok {
 		return false
 	}
 
-	for i, sp := range s.sprites {
-		if sp == sprite {
-			s.sprites = append(s.sprites[:i], s.sprites[i+1:]...)
-			return true
-		}
-	}
-
-	return false
+	return s.RemoveById(sprite.Actor.GetId())
 }
 
 // Removes sprite from renderer by ID.

system.go

@@ -75,3 +75,48 @@ func updateSystems(delta float64) {
 		system.Update(delta)
 	}
 }
+
+// Takes an actor and tries to add it to all systems that accept it.
+// This maybe not as performant as directly adding it to the right system.
+// Returns true if it could be added to at least one system, else false.
+func AddActor(actor interface{}) bool {
+	accepted := false
+
+	for _, system := range systems {
+		if system.Add(actor) {
+			accepted = true
+		}
+	}
+
+	return accepted
+}
+
+// Removes an actor from all systems.
+// This maybe not as performant as directly removing it from the right system.
+// Returns true if it could be removed from at least one system, else false.
+func RemoveActor(actor interface{}) bool {
+	removed := false
+
+	for _, system := range systems {
+		if system.Remove(actor) {
+			removed = true
+		}
+	}
+
+	return removed
+}
+
+// Removes an actor from all systems by ID.
+// This maybe not as performant as directly removing it from the right system.
+// Returns true if it could be removed from at least one system, else false.
+func RemoveActorById(id ActorId) bool {
+	removed := false
+
+	for _, system := range systems {
+		if system.RemoveById(id) {
+			removed = true
+		}
+	}
+
+	return removed
+}