@tool
@icon("res://addons/reedscene/prop/icon/prop_trans_icon.svg")

extends Node
class_name ReedTransition

@export var from_state_id: int = -1
@export var effects: Array[ReedPropEffect] = []

## runtime only
@export var runtime_only: bool = true

##Transtion能否被触发
func can_trigger(from: ReedPropState, ctx: Dictionary) -> bool:
	if from == null:
		return false

	if from_state_id != -1 and from.state_id != from_state_id:
		return false

	if runtime_only and ctx.get("is_load", false):
		return false

	return true


##执行Transition的逻辑
func execute(from: ReedPropState, to: ReedPropState, ctx: Dictionary) -> bool:
	# Effect 不需要知道 from/to，但 Transition 需要用 to 拿目标对象
	var owner : Node= to._owner
	var prop_comp : Node= to._owner_prop_comp

	for e in effects:
		e.apply(owner, prop_comp, ctx)

	return true