save project

snake.py

@@ -12,19 +12,50 @@ screen = pygame.display.set_mode((660, 480))
 # 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')
 f=pygame.time.Clock()
+setheading = 'right'
+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()
+        if event.type==locals.KEYDOWN:
+            if event.key==locals.K_UP and setheading != 'down':
+                setheading='up'
+                head=up
+            if event.key==locals.K_DOWN and setheading != 'up':
+                setheading='down'
+                head=down
+            if event.key==locals.K_RIGHT and setheading != 'left':
+                setheading='right'
+                head=right
+            if event.key==locals.K_LEFT and setheading != 'right':
+                setheading='left'
+                head=left
+    
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
+    if setheading=='right':
+    
         x+=30
-    screen.blit(right, (x,y))
+    elif setheading=='left':
+        
+        x-=30
+    elif setheading=='up':
+        
+        y-=30
+    else:
+    
+        y+=30
+    
+    screen.blit(head, (x,y))
     
     position.append((x,y))
     position.pop(0)
@@ -32,6 +63,7 @@ while True:
     
     #头移动
     
+
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
         screen.blit(body,position[i])