Cleaned and improved some event stuff

scripts/Event/Event.gd

@@ -2,15 +2,13 @@ class_name Event extends Node
 
 const Entity = preload("res://scripts/Entity/Entity.gd");
 
+var inEventSystemTree:bool = false;
 var started:bool = false;
 var ended:bool = false;
 var interactor:EntityInteractor = null
 var interactee:EntityInteractable = null
 
 # Godot Methods
-func _init() -> void:
-	pass
-
 func _process(delta: float) -> void:
 	if !started || ended:
 		return
@@ -21,6 +19,11 @@ func _process(delta: float) -> void:
 
 # Event methods (cleaned up)
 func start() -> void:
+	assert(
+		self.is_inside_tree(), 
+		"Event is trying to start but the node is not part of the scene tree. "+
+		"Refer to EventSystem.addEvent"
+	)
 	assert(started == false)
 	started = true
 
@@ -34,6 +37,8 @@ func isDone() -> bool:
 func end() -> void:
 	assert(ended == false)
 	ended = true
+	if self.inEventSystemTree:
+		EVENT.removeEvent(self)
 
 func isEndingEvent() -> bool:
 	return false