import os

import pygame

from src.config.game_config import GameConfig
from src.config.scenes import scene_dict


class Game:
    def __init__(self):
        # 初始化
        pygame.init()

        # 显示输入法候选框
        os.environ["SDL_IME_SHOW_UI"] = "1"

        # 设置窗口大小
        size = (GameConfig.window_x, GameConfig.window_y)
        self.screen = pygame.display.set_mode(size, pygame.NOFRAME)

        # 设置计时器
        self.clock = pygame.time.Clock()

        # 场景字典
        self.game_scenes = scene_dict
        # 当前场景
        self.scene = self.game_scenes["MainMenuScene"](self.screen)

        # 运行循环
        self.running = True
        self.run()

    def run(self):
        while self.running:
            # 更新每帧时间
            dt = self.clock.tick()
            # 事件处理
            for event in pygame.event.get():  # 这里已经获取了事件，事件队列被清空，在场景的update中再次获取将没有事件
                if event.type == pygame.QUIT:
                    self.running = False
                self.scene.handle_event(event)  # 当前场景接收事件

            # 检查是否切换场景
            if self.scene.next_scene is not None:
                if self.scene.next_scene in self.game_scenes.keys():
                    scene_class = self.game_scenes[self.scene.next_scene]
                    self.scene = scene_class(self.screen)

            # 清屏
            self.screen.fill(GameConfig.bg_color)

            # 场景每帧更新逻辑运行
            self.scene.update(dt)
            # 当场景的下一场景为exit时退出游戏
            if self.scene.next_scene == "exit":
                self.running = False

            # 更新显示
            pygame.display.update()

if __name__ == "__main__":
    Game()