save project

snake.py

 import pygame
 import pygame
 from pygame import locals
 from pygame import locals
 tick=pygame.time.Clock()
 tick=pygame.time.Clock()
+setheading="right"
 
 
 # 初始化pygame，为使用硬件做准备
 # 初始化pygame，为使用硬件做准备
 pygame.init()
 pygame.init()
@@ -14,21 +15,51 @@ pos=[(210, 120),(180, 120),(180, 90),(x,y)]
 # 背景
 # 背景
 background = pygame.image.load('bg.png')
 background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 right = pygame.image.load('right.png')
+left = pygame.image.load('left.png')
+down = pygame.image.load('down.png')
+up = pygame.image.load('up.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')
+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()
-    y+=30
+        elif event.type==locals.KEYDOWN:
+            if event.key==locals.K_DOWN and setheading != "up":
+                setheading="down"
+            elif event.key==locals.K_UP and setheading != "down":
+                setheading="up"
+            elif event.key==locals.K_LEFT and setheading != "right":
+                setheading="left"
+            elif event.key==locals.K_RIGHT and setheading != "left":
+                setheading="right"
+    if setheading=="down":
+        y+=30 
+        head=down
+    elif setheading=="up":
+        y-=30
+        head=up
+    elif setheading=="left":
+        x-=30
+        head=left    
+    elif setheading=="right":
+        x+=30
+        head=right
+        
+                
+
+
+    
     pos.append((x,y))
     pos.append((x,y))
     pos.pop(0)
     pos.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,pos[-1] )
+    screen.blit(head,pos[-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(pos)-1):
     for i in range(len(pos)-1):
         screen.blit(body, pos[i])
         screen.blit(body, pos[i])
@@ -36,4 +67,4 @@ while True:
     screen.blit(food, (360, 300))
     screen.blit(food, (360, 300))
     # 刷新画面
     # 刷新画面
     pygame.display.update()
     pygame.display.update()
-    tick.tick(3)
+    tick.tick(5)
\ No newline at end of file