Revert "Empty"

This reverts commit b98fdd0f29.

scripts/Cutscene/Event/CutsceneConcurrentEvent.gd

@@ -0,0 +1,73 @@
+class_name CutsceneConcurrentEvent extends "res://scripts/Cutscene/CutsceneEvent.gd"
+
+enum ConcurrentType {
+	SEQUENTIAL,
+	PARALLEL,
+	FIRST_DONE
+}
+
+var events:Array[CutsceneEvent] = []
+var type:ConcurrentType = ConcurrentType.SEQUENTIAL
+var current:int = 0
+
+func _init(t:ConcurrentType, evts:Array[CutsceneEvent]) -> void:
+	super._init();
+	self.events = evts;
+	self.type = t;
+
+func update(delta:float) -> void:
+	if self.type == ConcurrentType.PARALLEL:
+		for event in self.events:
+			if !event.started:
+				event.start()
+				event.started = true
+
+			if !event.isDone():
+				event.update(delta)
+
+				if event.isDone():
+					event.end()
+
+	elif self.type == ConcurrentType.FIRST_DONE:
+		for event in self.events:
+			if !event.started:
+				event.start()
+				event.started = true
+
+			event.update(delta)
+
+			if event.isDone():
+				event.end()
+				break
+
+	elif self.type == ConcurrentType.SEQUENTIAL:
+		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
+
+func isDone() -> bool:
+	if self.type == ConcurrentType.SEQUENTIAL:
+		return self.current >= self.events.size();
+	elif self.type == ConcurrentType.PARALLEL:
+		for evt in self.events:
+			if !evt.isDone():
+				return false;
+		return true;
+	elif self.type == ConcurrentType.FIRST_DONE:
+		for evt in self.events:
+			if evt.isDone():
+				return true;
+		return false;
+
+	printerr("Invalid ConcurrentType")
+	return false;