234 lines
9.8 KiB
Python
Executable File
234 lines
9.8 KiB
Python
Executable File
import os
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import json
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from abc import abstractmethod
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import pygame as pg
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from pygame.locals import *
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from . import constants as c
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# an abstract class, one state of automata
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class State():
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def __init__(self):
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self.start_time = 0
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self.current_time = 0
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self.done = False # false 代表未做完
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self.next = None # 表示这个状态退出后要转到的下一个状态
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self.persist = {} # 在状态间转换时需要传递的数据
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# 当从其他状态进入这个状态时，需要进行的初始化操作
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@abstractmethod
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def startup(self, current_time, persist):
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'''abstract method'''
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# 当从这个状态退出时，需要进行的清除操作
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def cleanup(self):
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self.done = False
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return self.persist
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# 在这个状态运行时进行的更新操作
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@abstractmethod
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def update(self, surface, keys, current_time):
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'''abstract method'''
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# control this game. do event loops
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class Control():
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def __init__(self):
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self.screen = pg.display.get_surface()
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self.done = False
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self.clock = pg.time.Clock() # 创建一个对象来帮助跟踪时间
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self.keys = pg.key.get_pressed()
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self.mouse_pos = None
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self.mouse_click = [False, False] # value:[left mouse click, right mouse click]
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self.current_time = 0.0
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self.state_dict = {}
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self.state_name = None
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self.state = None
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try:
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# 存在存档即导入
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with open(c.USERDATA_PATH) as f:
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userdata = json.load(f)
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self.game_info = {}
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# 导入数据，保证了可运行性，但是放弃了数据向后兼容性，即假如某些变量在以后改名，在导入时可能会被重置
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need_to_rewrite = False
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for key in c.INIT_USERDATA:
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if key in userdata:
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self.game_info[key] = userdata[key]
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else:
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self.game_info[key] = c.INIT_USERDATA[key]
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need_to_rewrite = True
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if need_to_rewrite:
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with open(c.USERDATA_PATH, "w") as f:
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savedata = json.dumps(self.game_info, sort_keys=True, indent=4)
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f.write(savedata)
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except: # 这里需要考虑多种情况，如文件不存在、文件不可读、文件不符合JSON语法要求，这些情况目前暂定统一进行新建文件操作
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if not os.path.exists(os.path.dirname(c.USERDATA_PATH)):
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os.makedirs(os.path.dirname(c.USERDATA_PATH))
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with open(c.USERDATA_PATH, "w") as f:
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savedata = json.dumps(c.INIT_USERDATA, sort_keys=True, indent=4)
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f.write(savedata)
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self.game_info = c.INIT_USERDATA.copy() # 内部全是不可变对象，浅拷贝即可
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# 存档内不包含即时游戏时间信息，需要新建
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self.game_info[c.CURRENT_TIME] = 0
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# 50为目前的基础帧率，乘以倍率即是游戏帧率
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self.fps = 50 * self.game_info[c.GAME_RATE]
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def setup_states(self, state_dict, start_state):
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self.state_dict = state_dict
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self.state_name = start_state
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self.state = self.state_dict[self.state_name]
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self.state.startup(self.current_time, self.game_info)
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def update(self):
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# 返回自 pygame_init() 调用以来的毫秒数 * 游戏速度倍率
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self.current_time = pg.time.get_ticks() * self.game_info[c.GAME_RATE]
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if self.state.done:
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self.flip_state()
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self.state.update(self.screen, self.current_time, self.mouse_pos, self.mouse_click)
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self.mouse_pos = None
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self.mouse_click[0] = False
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self.mouse_click[1] = False
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# 状态转移
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def flip_state(self):
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if self.state.next == c.EXIT:
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pg.quit()
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os._exit(0)
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# previous, self.state_name = self.state_name, self.state.next
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self.state_name = self.state.next
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persist = self.state.cleanup()
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self.state = self.state_dict[self.state_name]
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self.state.startup(self.current_time, persist)
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def event_loop(self):
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for event in pg.event.get():
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if event.type == pg.QUIT:
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self.done = True
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elif event.type == pg.KEYDOWN:
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self.keys = pg.key.get_pressed()
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if event.key == pg.K_f:
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pg.display.set_mode(c.SCREEN_SIZE, pg.HWSURFACE|pg.FULLSCREEN)
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elif event.key == pg.K_u:
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pg.display.set_mode(c.SCREEN_SIZE)
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elif event.type == pg.KEYUP:
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self.keys = pg.key.get_pressed()
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elif event.type == pg.MOUSEBUTTONDOWN:
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self.mouse_pos = pg.mouse.get_pos()
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self.mouse_click[0], _, self.mouse_click[1] = pg.mouse.get_pressed()
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# self.mouse_click[0]表示左键，self.mouse_click[1]表示右键
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print( f"点击位置: ({self.mouse_pos[0]:3}, {self.mouse_pos[1]:3})",
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f"左右键点击情况: {self.mouse_click}")
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def run(self):
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while not self.done:
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self.event_loop()
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self.update()
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pg.display.update()
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self.clock.tick(self.fps)
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def get_image(sheet, x, y, width, height, colorkey=c.BLACK, scale=1):
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image = pg.Surface([width, height])
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rect = image.get_rect()
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image.blit(sheet, (0, 0), (x, y, width, height))
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if colorkey:
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image.set_colorkey(colorkey)
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image = pg.transform.scale(image,
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(int(rect.width*scale),
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int(rect.height*scale)))
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return image
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def get_image_menu(sheet, x, y, width, height, colorkey=c.BLACK, scale=1):
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# 一定要保留阿尔法通道，修复主菜单bug，游戏中car显示又有bug
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image = pg.Surface([width, height], SRCALPHA)
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rect = image.get_rect()
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image.blit(sheet, (0, 0), (x, y, width, height))
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image.set_colorkey(colorkey)
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image = pg.transform.scale(image,
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(int(rect.width*scale),
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int(rect.height*scale)))
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return image
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def load_image_frames(directory, image_name, colorkey, accept):
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frame_list = []
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tmp = {}
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# image_name is "Peashooter", pic name is 'Peashooter_1', get the index 1
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index_start = len(image_name) + 1
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frame_num = 0
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for pic in os.listdir(directory):
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name, ext = os.path.splitext(pic)
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if ext.lower() in accept:
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index = int(name[index_start:])
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img = pg.image.load(os.path.join(directory, pic))
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if img.get_alpha():
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img = img.convert_alpha()
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else:
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img = img.convert()
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img.set_colorkey(colorkey)
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tmp[index]= img
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frame_num += 1
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for i in range(frame_num): # 这里注意编号必须连续，否则会出错
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frame_list.append(tmp[i])
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return frame_list
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# colorkeys 是设置图像中的某个颜色值为透明,这里用来消除白边
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def load_all_gfx(directory, colorkey=c.WHITE, accept=('.png', '.jpg', '.bmp', '.gif', 'webp')):
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graphics = {}
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for name1 in os.listdir(directory):
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# subfolders under the folder resources\graphics
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dir1 = os.path.join(directory, name1)
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if os.path.isdir(dir1):
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for name2 in os.listdir(dir1):
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dir2 = os.path.join(dir1, name2)
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if os.path.isdir(dir2):
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# e.g. subfolders under the folder resources\graphics\Zombies
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for name3 in os.listdir(dir2):
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dir3 = os.path.join(dir2, name3)
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# e.g. subfolders or pics under the folder resources\graphics\Zombies\ConeheadZombie
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if os.path.isdir(dir3):
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# e.g. it's the folder resources\graphics\Zombies\ConeheadZombie\ConeheadZombieAttack
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image_name, _ = os.path.splitext(name3)
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graphics[image_name] = load_image_frames(dir3, image_name, colorkey, accept)
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else:
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# e.g. pics under the folder resources\graphics\Plants\Peashooter
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image_name, _ = os.path.splitext(name2)
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graphics[image_name] = load_image_frames(dir2, image_name, colorkey, accept)
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break
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else:
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# e.g. pics under the folder resources\graphics\Screen
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name, ext = os.path.splitext(name2)
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if ext.lower() in accept:
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img = pg.image.load(dir2)
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if img.get_alpha():
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img = img.convert_alpha()
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else:
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img = img.convert()
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img.set_colorkey(colorkey)
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graphics[name] = img
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return graphics
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# 从文件加载矩形碰撞范围
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# 用于消除文件边框影响
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def loadZombieImageRect():
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with open(c.JSON_PATH_ZOMBIE) as f:
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data = json.load(f)
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return data[c.ZOMBIE_IMAGE_RECT]
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def loadPlantImageRect():
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with open(c.JSON_PATH_PLANTS) as f:
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data = json.load(f)
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return data[c.PLANT_IMAGE_RECT]
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pg.display.set_caption(c.ORIGINAL_CAPTION) # 设置标题
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SCREEN = pg.display.set_mode(c.SCREEN_SIZE) # 设置初始屏幕
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pg.mixer.set_num_channels(255) # 设置可以同时播放的音频数量，默认为8，经常不够用
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if os.path.exists(c.ORIGINAL_LOGO): # 设置窗口图标，仅对非Nuitka时生效，Nuitka不需要包括额外的图标文件，自动跳过这一过程即可
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pg.display.set_icon(pg.image.load(c.ORIGINAL_LOGO))
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GFX = load_all_gfx(c.IMG_DIR_PATH)
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ZOMBIE_RECT = loadZombieImageRect()
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PLANT_RECT = loadPlantImageRect()
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