Add cutscene change event

scripts/Cutscene/Event/CutsceneWhileEvent.gd

@@ -0,0 +1,43 @@
+class_name CutsceneWhileEvent extends "res://scripts/Cutscene/CutsceneEvent.gd"
+
+var events:Array[CutsceneEvent] = []
+var callback:Callable
+var current:int = 0
+
+func _init(callback:Callable, evt:Array[CutsceneEvent]) -> void:
+	super._init();
+	self.events = evt;
+	self.callback = callback;
+
+func shouldLoop() -> bool:
+	return self.callback.call(self)
+
+func update(delta:float) -> void:
+	if self.current >= self.events.size():
+		return;
+	
+	var evt = self.events[self.current]
+	if !evt.started:
+		evt.start()
+		evt.started = true
+
+	evt.update(delta)
+
+	if evt.isDone():
+		evt.end()
+		self.current += 1
+
+	if self.current < self.events.size():
+		return
+	
+	if !self.shouldLoop():
+		return
+	
+	self.current = 0
+	for event in self.events:
+		event.reset()
+
+func isDone() -> bool:
+	if self.shouldLoop():
+		return false;
+	return self.current >= self.events.size();