class_name MotionExecutor
extends Node

signal motion_started(action: Resource)
signal motion_finished(action: Resource)

var current_action: Resource
var velocity := Vector2.ZERO
var duration := 0.0
var elapsed := 0.0
var active := false


func execute(action: Resource, direction: Vector2, beat_time: float, speed := 220.0) -> void:
	current_action = action
	duration = maxf(0.01, float(action.get("action_beats")) * maxf(0.01, beat_time))
	elapsed = 0.0
	active = true
	var move_x := float(action.get("move_mult_x"))
	if move_x == 0.0:
		move_x = -1.0 if StringName(str(action.get("displacement"))) == &"left" else 1.0 if StringName(str(action.get("displacement"))) == &"right" else 0.0
	velocity = Vector2(direction.x if direction.x != 0.0 else move_x, direction.y).normalized() * speed if move_x != 0.0 or direction != Vector2.ZERO else Vector2.ZERO
	motion_started.emit(action)


func tick(delta: float) -> Vector2:
	if not active:
		return Vector2.ZERO
	elapsed += delta
	if elapsed >= duration:
		active = false
		velocity = Vector2.ZERO
		motion_finished.emit(current_action)
	return velocity


func cancel() -> void:
	active = false
	velocity = Vector2.ZERO
	current_action = null