save project

snake.py

@@ -13,22 +13,49 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 body = pygame.image.load('body.png')
+left = pygame.image.load("left.pug")
+up = pygame.image.load("up.pug")
+down = pygame.image.load("down.pug")
 
 
 x, y = 240, 120   
 x, y = 240, 120   
 position = [(180,90),(180,120),(210,120),(x,y)]
 position = [(180,90),(180,120),(210,120),(x,y)]
 
 
+setheading = "right"
+snake_head = right
+
+
 while True:
 while True:
     for event in pygame.event.get():
     for event in pygame.event.get():
         if event.type == locals.QUIT:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             # 接收到退出事件后退出程序
             exit()
             exit()
-    x += 30   #
+        elif 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":
+               c= "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              
     position.append((x,y))
     position.append((x,y))
     position.pop(0)
     position.pop(0)
     # 将背景图画上去
     # 将背景图画上去
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
     # 将贪吃蛇画上去
-    screen.blit(right, (x, y))
+    screen.blit(snake_head, position[-1])
     # 将贪吃蛇的身体画上去
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
     for i in range(len(position)-1):
         screen.blit(body,position[i])
         screen.blit(body,position[i])