save project

snake.py

@@ -12,22 +12,45 @@ 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_hear = 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()
+        elif event.type == locals.KEYDOWN:
+            if event.key == locals.K_RIGHT and setheading !="left":
+                setheading = 'right'
+                snake_hear = right
+            if event.key == locals.K_LEFT and setheading !="right":
+                setheading = 'left'
+                snake_hear = left
+            if event.key == locals.K_UP and setheading !="down":
+                setheading = 'up'
+                snake_hear = up
+            if event.key == locals.K_DOWN and setheading !="up":
+                setheading = 'down'
+                snake_hear = down
+    
+    if setheading =='right':
         x+=30
+    if setheading =='left':
+        x-=30
+    if setheading =='up':
+        y-=30
+    if setheading =='down':
+        y+=30    
     position.append((x,y))
     position.pop(0)
     screen.blit(background, (0, 0))
-    # 将贪吃蛇画上去
-    screen.blit(right,(x,y))
-    # 将贪吃蛇的身体画上去
-    screen.blit(right,position[-1])
+    screen.blit(snake_hear,position[-1])
     for i in range(len(position)-1):
         screen.blit(body,position[i])
     screen.blit(food,(360,300))