save project

snake.py

@@ -10,28 +10,58 @@ FPSCLOCK=pygame.time.Clock()
 # 背景
 background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
+left = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down=pygame.image.load('down.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
-x,y=270, 120
-position=[(180, 90),(180, 120),(210, 120),(x, y)]    
+x,y=240, 120
+position=[(180,90),(180,120),(210,120),(x,y)]
+setheeting='right'
+snake_haeding=right
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-    x+=30
-    position.append((x, y))
+        elif event.type == locals.KEYDOWN:
+            if event.key==locals.K_RIGHT and setheeting!='left':
+                setheeting='right'
+                snake_haeding=right
+            if event.key==locals.K_LEFT and setheeting!='right':
+                setheeting='left'
+                snake_haeding=left
+            if event.key==locals.K_UP and setheeting!='down':
+                setheeting='up'
+                snake_haeding=up
+            if event.key==locals.K_DOWN and setheeting!='up':
+                setheeting='down'
+                snake_haeding=down
+    if setheeting=='right':
+        x+=30
+    elif setheeting=='left':
+        x-=30
+    elif setheeting=='down':
+        y+=30
+    elif setheeting=='up':
+        y-=30    
+   
+    position.append((x,y))
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right,position[-1])
+    screen.blit(snake_haeding, position[-1])
+    
+
     # 将贪吃蛇的身体画上去
     # screen.blit(body, (210, 120))
     # screen.blit(body, (180, 120))
     # screen.blit(body, (180, 90))
-    screen.blit(food, (360, 300))
     for i in range(len(position)-1):
-        screen.blit(body,position[i])          
+        screen.blit(body,position[i])
+    # 将果实画上去
+    screen.blit(food, (360, 300))
+    # 刷新画面
     pygame.display.update()
-    FPSCLOCK.tick(3)
\ No newline at end of file
+    FPSCLOCK.tick(3)