save project

snake.py

@@ -11,22 +11,48 @@ FPSCLOCK=pygame.time.Clock()
 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
 positon=[(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
+        if event.type == locals.KEYDOWN:
+            if event.key == locals.K_RIGHT and setheading !="left":
+                setheading =  'right'
+                snake_head = right
+            if event.key == locals.K_LEFT and setheading !="right":
+                setheading =  'left'
+                snake_head = left
+            if event.key == locals.K_UP and setheading !="down":
+                setheading =  'up'
+                snake_head = up
+            if event.key == locals.K_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
     positon.append((x,y))
     positon.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
 
     # 将贪吃蛇画上去
-    screen.blit(right,positon[-1] )
+    screen.blit(snake_head ,positon[-1] )
     # 将贪吃蛇的身体画上去
     for i in range(len(positon)-1):
         screen.blit(body,positon[i])
@@ -37,4 +63,4 @@ while True:
     screen.blit(food, (360, 300))
     # 刷新画面
     pygame.display.update()
-    FPSCLOCK.tick(3)
\ No newline at end of file
+    FPSCLOCK.tick(7)
\ No newline at end of file