extends Node3D
class_name Effect

@onready var afterimage: PackedScene = preload("res://scene/effect/afterimage/normal.tscn")
@onready var corpse: PackedScene = preload("res://scene/effect/afterimage/normal.tscn")
@onready var readiness_hero: PackedScene = preload("res://scene/effect/readiness/readiness_hero.tscn")
@onready var readiness_monster: PackedScene = preload("res://scene/effect/readiness/readiness_monster.tscn")
@onready var readiness_bullet: PackedScene = preload("res://scene/effect/readiness/readiness_bullet.tscn")
@onready var character: Character = (get_owner() as Character)
@onready var view: View = (%View as View)
@onready var status: Status = (%Status as Status)

var rediness: Decal
var is_pause: bool
var is_right: bool
var temp_release_particle_list: Array[Variant] = []


func particle_list() -> Array[Variant]:
    var ret: Array[Variant] = []
    for child in get_children():
        if child is Particle:
            ret.append(child)
    return ret


func init(type: Enum.ECharacterType):
    match type:
        Enum.ECharacterType.Player: rediness = readiness_hero.instantiate()
        Enum.ECharacterType.Monster: rediness = readiness_monster.instantiate()
        Enum.ECharacterType.Bullet: rediness = readiness_bullet.instantiate()
    if rediness:
        add_child(rediness)


func set_body_scale(body_scale: Vector3):
    if rediness:
        rediness.scale = body_scale *2.2
        rediness.scale.y = 10
        rediness.position = Vector3.DOWN * 4


func _process(delta):
    #指针方向
    if status.move_dir:
        var angle: float = status.move_dir.angle_to(Vector2.RIGHT)
        rediness.rotation.y = angle
    #flip
    if is_right != status.is_right:
        is_right = status.is_right
        for particle: Particle in particle_list():
            particle.scale.x =  abs(particle.scale.x) * (1 if is_right else -1)
    #pause
    if is_pause != status.is_pause:
        is_pause = status.is_pause
        var ret: Array[Variant] = particle_list()
        for particle: Particle in ret:
            particle.set_pause(is_pause)
    if !is_pause:
        for particle: Particle in temp_release_particle_list:
            _release_effect(particle)
        temp_release_particle_list.clear()


func cast_image(res: Resource):
    var new_afterimage: Afterimage = afterimage.instantiate() as Afterimage
    new_afterimage.position = character.view_pos()
    new_afterimage.name = "afterimage"
    new_afterimage.velocity = character.velocity / 4
    new_afterimage.target = view
    SignalManager.effect_create.emit(new_afterimage)


func cast_after_image(): cast_image(afterimage)


func cast_corpse(): cast_image(corpse)


func cast_particle(resource: Resource, is_attach: bool, offset: Vector3, scale: Vector3): _cast_particle(resource, is_attach, offset, scale)


func cast_attack_particle1(): _cast_attack_particle(1, true)


func cast_attack_particle1_release(): _cast_attack_particle(1, false)


func cast_attack_particle2(): _cast_attack_particle(2, true)


func cast_attack_particle2_release(): _cast_attack_particle(2, false)


func cast_self_particle() -> void:
    if !status.cfg:
        return
    var particle: Resource = status.cfg.get_particle()
    if !particle:
        return
    _cast_particle(particle, true, Vector3.ZERO, Vector3.ZERO)


func _cast_attack_particle(index: int, is_attach: bool) -> void:
    if !status.skill_cfg:
        return
    var attack_particle: Resource = status.skill_cfg.get_attack_particle(index)
    if !attack_particle:
        print("未配置技能攻击特效:", status.skill_cfg.resource_path)
        return
    _cast_particle(attack_particle, is_attach, Vector3.ZERO, Vector3.ZERO)


func _cast_particle(resource: Resource, is_attach: bool, offset: Vector3, scale: Vector3) -> void:
    if !resource:
        print("未配置技能特效")
        return
    var new_particle: Particle = resource.instantiate() as Particle
    new_particle.name = "particle"
    var angle: float           = Util.dir_angle(status.skill_dir)
    new_particle.rotation.y = angle if is_right else -angle
    if scale:
        new_particle.scale = scale
    new_particle.scale.x = abs(new_particle.scale.x) * (1 if is_right else -1)
    if offset:
        new_particle.position = offset
    else:
        new_particle.position = status.basic_offset
    add_child(new_particle)
    if !is_attach:
        temp_release_particle_list.append(new_particle)


func release_effect():
    for particle: Particle in particle_list():
        _release_effect(particle)
    temp_release_particle_list.clear()


func _release_effect(particle: Particle):
    var pos: Vector3 = particle.get_global_position()
    particle.set_pause(false)
    particle.position = pos
    remove_child(particle)
    SignalManager.effect_create.emit(particle)