save project

snake.py

@@ -12,19 +12,44 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
+left=pygame.image.load('left.png')
+up=pygame.image.load('up.png')
+down=pygame.image.load('down.png')
 x,y=240,120
 position=[(180,90),(180,120),(210,120),(x,y)]
+setheading="right"
+snake_head=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
+        elif event.type==locals.KEYDOWN:
+            if event.key==locals.KMOD_RIGHT and setheading != "left":
+                setheading='right'
+                snake_head=right
+            if event.key==locals.KMOD_LEFT and setheading != "right":
+                setheading='left'
+                snake_head=left
+            if event.key==locals.KMOD_UP and setheading != "down":
+                setheading='up'
+                snake_head=up
+            if event.key==locals.KMOD_DOWN and setheading != "up":
+                setheading='down'
+                snake_head=down
+        if setheading=="right":
+            x+=30
+        elif setheading=="left":
+            x-=30
+        elif setheading=="up":
+            y-=30
+        else:
+            y+=30
     position.append((x,y))
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
-    screen.blit(right,position[-1])
+    screen.blit(snake_head,position[-1])
     for i in range(len(position)-1):
         screen.blit(body,position[i])
     # 将贪吃蛇画上去
@@ -34,7 +59,7 @@ while True:
     #screen.blit(body, (180, 120))
     #screen.blit(body, (180, 90))
     # 将果实画上去
-    screen.blit(food, (360, 300))
+    screen.blit(food,(360, 300))
     # 刷新画面
     pygame.display.update()
     FPSCLOCK.tick(3)
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