save project

snake.py

@@ -9,24 +9,49 @@ screen = pygame.display.set_mode((660, 480))
 
 
 # 背景
 # 背景
 background = pygame.image.load('bg.png')
 background = pygame.image.load('bg.png')
+left = pygame.image.load('left.png')
+down = pygame.image.load('down.png')
+up = pygame.image.load('up.png')
 right = pygame.image.load('right.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 body = pygame.image.load('body.png')
 x,y=240,120
 x,y=240,120
 FPS=pygame.time.Clock()
 FPS=pygame.time.Clock()
 list=[(180,90),(180,120),(210,120),(x,y)]
 list=[(180,90),(180,120),(210,120),(x,y)]
+sd=right
+setheading='right'
 while True:
 while True:
     for event in pygame.event.get():
     for event in pygame.event.get():
         if event.type == locals.QUIT:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             # 接收到退出事件后退出程序
             exit()
             exit()
-    # 将背景图画上去
+    if event.type==locals.KEYDOWN:
+        if event.key==locals.K_RIGHT and setheading!='left':
+            setheading='right'
+            sd= right
+        if event.key==locals.K_LEFT and setheading!='right':
+            setheading='left'
+            sd=left      
+        if event.key==locals.K_UP and setheading!='down':
+            setheading='up'
+            sd=up      
+        if event.key==locals.K_DOWN and setheading!='up':
+            setheading='down'
+            sd=down      
+    if setheading == 'right':
         x+=30
         x+=30
+    elif setheading == 'left': 
+        x-=30
+    elif setheading == 'up':
+        y-=30
+    else: 
+        y+=30
+    # 将背景图画上去
     list.append((x,y))
     list.append((x,y))
     list.pop(0)
     list.pop(0)
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
     # 将贪吃蛇画上去
-    screen.blit(right,list[3])
+    screen.blit(sd,list[3])
     # 将贪吃蛇的身体画上去
     # 将贪吃蛇的身体画上去
     screen.blit(body, list[2])
     screen.blit(body, list[2])
     screen.blit(body, list[1])
     screen.blit(body, list[1])