@tool
extends Node3D
class_name LevelInstance

@export var size: Vector3i = Vector3i.ONE:
    set(value):
        if (value.x<1) or (value.y<1) or (value.z<1):
            value = Vector3i.ONE
        size = value
        _on_size_change()

@export var is_force_battle: bool

@export var focus: bool:
    get: return false
    set(value):
        set_focus_from(false)
        set_focus_to(true)

@export var cancel_focus: bool:
    get: return false
    set(value):
        set_focus_from(false)
        set_focus_to(false)

@export var enemy_nums: Array[LevelEnemy]

@onready var grid_block_material: Material = load("res://render/material/grid_block.tres") as Material

var level_area_cfg: LevelAreaCfg #运行时设置
var character_spots: Array[ChacacterSpot] #运行时设置
var character_born_spots: Array[ChacacterBornSpot] #运行时设置
var level_active_spots: Array[LevelActiveSpot] #运行时设置
var enemy_cfgs: Array[CharacterCfg] #运行时设置

class ChacacterSpot:
    var pos: Vector3
    var cfg: CharacterCfg

class ChacacterBornSpot:
    var pos: Vector3
    var type: int

class LevelActiveSpot:
    var pos: Vector3
    var scene: PackedScene


func _on_size_change() -> void:
    var level_range: CSGBox3D = $LevelRange as CSGBox3D
    var size_basic: Vector3   = Setting.size_basic
    level_range.size = Vector3(size.x*size_basic.x, size.y*size_basic.y, size.z*size_basic.z)
    level_range.position = level_range.size / 2


func set_focus_from(is_focus: bool) -> void:
    _set_focus(is_focus, "from")


func set_focus_to(is_focus: bool) -> void:
    _set_focus(is_focus, "to")


func _set_focus(is_focus: bool, key: String) -> void:
    if not grid_block_material:
        return
    if is_focus:
        grid_block_material.set_shader_parameter("is_focus_"+key, true)
        grid_block_material.set_shader_parameter("focus_min_"+key, pos_min() - Vector3.ONE * 0.32)
        grid_block_material.set_shader_parameter("focus_max_"+key, pos_max() + Vector3.ONE * 0.32)
    else:
        grid_block_material.set_shader_parameter("is_focus_"+key, false)


func get_level_size() -> Vector2:
    var level_range: CSGBox3D = $LevelRange as CSGBox3D
    var level_size: Vector3   = level_range.size
    return Vector2(level_size.x, level_size.z)


func get_level_pos() -> Vector2:
    var pos: Vector3 = get_global_position()
    return Vector2(pos.x, pos.z)


func set_level_range_visible(value: bool) -> void:
    var level_range: CSGBox3D = $LevelRange as CSGBox3D
    level_range.visible = value


func init_character_spots(level_character: GridMap) -> void:
    character_spots = []
    character_born_spots = []
    level_active_spots = []
    enemy_cfgs = []
    var id_min: Vector3i          = Util.get_level_grid_pos(pos_min())
    var id_max: Vector3i          = Util.get_level_grid_pos(pos_max())
    var mesh_library: MeshLibrary = level_character.get_mesh_library()
    for x in range(id_min.x, id_max.x):
        for y in range(id_min.y, id_max.y):
            for z in range(id_min.z, id_max.z):
                var pos: Vector3i = Vector3i(x, y, z)
                var float_pos: Vector3 = Util.get_level_float_pos(pos) + Vector3(0.32, 0, 0.32)
                var item_id: int  = level_character.get_cell_item(pos)
                if item_id == GridMap.INVALID_CELL_ITEM:
                    continue
                var item_name: String = mesh_library.get_item_name(item_id)
                if item_name.begins_with("cp_"):
                    var character_born_spot = ChacacterBornSpot.new()
                    character_born_spot.pos = float_pos
                    character_born_spots.append(character_born_spot)
                elif item_name.begins_with("c_"):
                    var character_name: String      = item_name.trim_prefix("c_")
                    var character_cfg: CharacterCfg = Util.get_character_cfg_by_name(character_name)
                    if not character_cfg:
                        continue
                    var character_spot = ChacacterSpot.new()
                    character_spot.cfg = character_cfg
                    character_spot.pos = float_pos
                    character_spots.append(character_spot)
                elif item_name.begins_with("a_"):
                    var scene_name: String      = item_name.trim_prefix("a_")
                    var scene : PackedScene     = Util.get_level_active_scene_by_name(scene_name)
                    if not scene:
                        continue
                    var level_active_spot = LevelActiveSpot.new()
                    level_active_spot.scene = scene
                    level_active_spot.pos   = float_pos
                    level_active_spots.append(level_active_spot)

    for enemy_num: LevelEnemy in enemy_nums:
        for i in enemy_num.num:
            enemy_cfgs.append(enemy_num.cfg)


func get_character_spots() -> Array[ChacacterSpot]:
    return character_spots

func get_character_born_spots() -> Array[ChacacterBornSpot]:
    return character_born_spots

func get_enemy_cfgs() -> Array[CharacterCfg]:
    return enemy_cfgs

func get_level_active_spots() -> Array[LevelActiveSpot]:
    return level_active_spots

func pos_min() -> Vector3:
    return get_global_position()


func pos_max() -> Vector3:
    var level_range: CSGBox3D = $LevelRange as CSGBox3D
    var level_size: Vector3   = level_range.size
    return get_global_position() + level_size


func is_in_active_area(pos: Vector3) -> bool:
    var active_pos_min: Vector3 = pos_min() + Vector3(0.96, 0, 0.96)
    var active_pos_max: Vector3 = pos_max() - Vector3(0.96, 0, 0.96)
    return pos.x >= active_pos_min.x and pos.x <= active_pos_max.x and \
           pos.z >= active_pos_min.z and pos.z <= active_pos_max.z and \
           pos.y >= active_pos_min.y and pos.y <= active_pos_max.y