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snake.py

-import pygame
-
+import pygame #导入模块
+from pygame import locals #从pygame中导入locals模块  
 # 初始化pygame，为使用pygame做准备
 # 初始化pygame，为使用pygame做准备
 pygame.init()
 pygame.init()
-
+bg = pygame.image.load("bg.png")#加载背景图
+right = pygame.image.load("right.png")#加载蛇图片
+body = pygame.image.load("body.png")#加载蛇身图片
+apple = pygame.image.load("apple.png")#加载苹果图片
 # 创建一个窗口
 # 创建一个窗口
-screen = pygame.display.set_mode((660,480))
+screen = pygame.display.set_mode((660,480))
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+#创建计时器
+FPSCLOCK=pygame.time.Clock()
+#定义xy坐标
+x,y=120,90
+position=[(90,90),(60,90),(60,60),(x,y)]
+while True:
+    for event in pygame.event.get():
+        if event.type==locals.QUIT:#退出事件
+            exit()
+    x+=30
+    #每次追加贪吃蛇头部坐标，然后删除第一个坐标
+    position.append((x,y))
+    position.pop(0)
+    screen.blit(bg,(0,0))#窗口画背景图
+    #窗口画蛇  取列表最后下标的数
+    screen.blit(right,position[-1])
+    #窗口画蛇身
+    for i in range(len(position)-1):
+        screen.blit(body,position[i])
+    # screen.blit(body,(90,90))
+    # screen.blit(body,(60,90))
+    # screen.blit(body,(60,60))
+    screen.blit(apple,(330,210))#窗口画苹果
+    pygame.display.update()#刷新画面
+    FPSCLOCK.tick(3)#设置游戏画面每秒布超过3帧
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