save project

snake.py

 import pygame
 import pygame
 from pygame import locals
 from pygame import locals
-
 # 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()
 x,y=240,120
 x,y=240,120
@@ -10,24 +9,48 @@ position=[(180,90),(180,120),(210,120),(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')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.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')
-
+focus='r'
 PYGCLOCK=pygame.time.Clock()
 PYGCLOCK=pygame.time.Clock()
-
+snack_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()
+        if event.type==locals.KEYDOWN:
+            if event.key==locals.K_RIGHT and focus!='l':
+                snack_head=right
+                focus='r'
+            if event.key==locals.K_LEFT and focus!='r':
+                snack_head=left
+                focus='l'
+            if event.key==locals.K_UP and focus!='d':
+                snack_head=up
+                focus='u'
+            if event.key==locals.K_DOWN and focus!='u':
+                snack_head=down
+                focus='d'
+    if focus=='r':
         x+=30
         x+=30
+    elif focus=='l':
+        x-=30
+    elif focus=='d':
+        y+=30
+    else:
+        y-=30
+
+    position.append((x,y))
+    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(snack_head, position[-1])
     # 将贪吃蛇的身体画上去
     # 将贪吃蛇的身体画上去
-    position.append((x,y))
-    position.pop(0)
     for i in range(len(position)-1):
     for i in range(len(position)-1):
         screen.blit(body,position[i])
         screen.blit(body,position[i])
     # 将果实画上去
     # 将果实画上去