TouhouGD/script/manager/level_manager.gd

extends Node3D
class_name LevelManager

var target: int
var level: Level
var cur_level_instance: LevelInstance
var level_instance_dict: Dictionary = {}
var level_loading_rate: float
var level_active_spots: Array[Node]
var level_character_born_spots: Array[LevelInstance.ChacacterBornSpot]
var level_enemy_cfgs: Array[CharacterCfg]
var level_doors: Array[LevelDoor]
var is_level_active: bool
var enemy_count: int #由关卡生成的怪物数量
var current_enmey: Array[int] #当前存活怪物id

func _ready():
    Global.level_mgr = self
    SignalManager.character_create.connect(on_character_create)
    SignalManager.character_pos_changed.connect(on_character_pos_changed)
    SignalManager.character_die.connect(on_character_die)


func init():
    var level_scene: PackedScene = load("res://scene/level/level.tscn")
    level = level_scene.instantiate() as Level
    add_child(level)
    var level_instance_list: Array[LevelInstance] = level.get_level_instance_list()
    for level_instance in level_instance_list:
        var level_id_list: Array[Vector3i] = get_level_id_list(level_instance.get_global_position(), level_instance.size)
        for level_id in level_id_list:
            if level_id in level_instance_dict:
                print("关卡id重复", level_id)
            level_instance_dict[level_id] = level_instance
    level.init()


func _process(delta) -> void:
    if not level:
        return
    if level_loading_rate < 1:
        level_loading_rate += delta *2
        if level_loading_rate > 1:
            level_loading_rate = 1
        level.set_level_loading_rate(level_loading_rate)


func get_born_pos() -> Vector3:
    return level.get_born_pos()


func on_character_create(id: int, type: int, pos: Vector3):
    if type == Enum.ECharacterType.Player:
        target = id
        on_character_pos_changed(id, pos)
    elif type == Enum.ECharacterType.Monster:
        current_enmey.append(id)


func on_character_pos_changed(id: int, pos: Vector3):
    if id == target:
        set_player_position(pos)


func on_character_die(id: int):
    if id in current_enmey:
        current_enmey.remove_at(current_enmey.find(id))
        #强制战斗关卡通关
        if not cur_level_instance.is_force_battle:
            return
        if enemy_born(1):
            return
        if current_enmey.size() > 0:
            return
        for level_door: LevelDoor in level_doors:
            level_door.set_open(true)


func set_player_position(pos: Vector3) -> void:
    level.set_player_position(pos)
    var new_id: Vector3i                  = Util.get_level_id(pos)
    var new_level_instance: LevelInstance = level_instance_dict.get(new_id)
    if not new_level_instance:
        return #todo 不存在的关卡 主角直接死亡
    if cur_level_instance:
        if new_level_instance == cur_level_instance:
            check_level_active(pos)
            return
        cur_level_instance.set_focus_from(true)

    new_level_instance.set_focus_to(true)
    cur_level_instance = new_level_instance
    enter_level()

func enter_level() -> void:
    SignalManager.level_loading_start.emit()
    is_level_active = false
    level_active_spots = []
    level_doors = []
    #创建关卡内活动部件
    for level_active_spot: Node in level_active_spots:
        level_active_spot.queue_free()
    for level_active_spot: LevelInstance.LevelActiveSpot in cur_level_instance.get_level_active_spots():
        var new_level_active: Node = level_active_spot.scene.instantiate()
        add_child(new_level_active)
        new_level_active.global_position = level_active_spot.pos
        level_active_spots.append(new_level_active)
        if new_level_active is LevelDoor:
            level_doors.append(new_level_active)
    #更新刷怪数据
    level_character_born_spots = cur_level_instance.get_character_born_spots()
    level_enemy_cfgs = cur_level_instance.get_enemy_cfgs()
    enemy_count = 0

    level_loading_rate = 1-level_loading_rate
    level.set_level_loading_rate(level_loading_rate)
    SignalManager.level_size_change.emit(cur_level_instance.get_level_size())
    SignalManager.level_pos_change.emit(cur_level_instance.get_level_pos())

    SignalManager.level_loading_end.emit()

func check_level_active(pos: Vector3) -> void:
    if is_level_active:
        return
    var is_active: bool = cur_level_instance.is_in_active_area(pos)
    if not is_active:
        return
    is_level_active = true
    for level_door: LevelDoor in level_doors:
        level_door.set_open(true)
    #创建关卡内角色
    for character_spot: LevelInstance.ChacacterSpot in cur_level_instance.get_character_spots():
        Global.character_mgr.create_character(character_spot.cfg, Enum.ETeam.Monster, character_spot.pos)
    #强制战斗关门刷怪
    if cur_level_instance.is_force_battle:
        if enemy_born(level_character_born_spots.size()):
            for level_door: LevelDoor in level_doors:
                level_door.set_open(false)


func get_level_id_list(pos: Vector3, size: Vector3i) -> Array[Vector3i]:
    var size_basic: Vector3  = Setting.size_basic
    var ret: Array[Vector3i] = []
    for x in range(size.x):
        for y in range(size.y):
            for z in range(size.z):
                var pos_sub: Vector3 = pos +Vector3(x*size_basic.x, y*size_basic.y, z*size_basic.z)
                ret.append(Util.get_level_id(pos_sub))
    return ret


func enemy_born(count : int) -> bool:
    if level_character_born_spots.size() == 0:
        return false
    var count_max: int = level_enemy_cfgs.size()
    count = min(count, count_max - enemy_count)
    if count == 0:
        return false
    var count_start = enemy_count
    for i in count:
        var cfg_index: int = count_start + i
        var cfg: CharacterCfg = level_enemy_cfgs[cfg_index]
        var pos_index: int = enemy_count % level_character_born_spots.size()
        var character_spot: LevelInstance.ChacacterBornSpot = level_character_born_spots[pos_index]
        Global.character_mgr.create_character(cfg, Enum.ETeam.Monster, character_spot.pos)
        enemy_count += 1
    return true