save project

snake.py

@@ -12,19 +12,45 @@ 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.png')
+up= pygame.image.load('up.png')
+down= pygame.image.load('down.png')
 x,y=240,120
 x,y=240,120
 p=[(180,90),(180,120),(210,120),(x,y)]
 p=[(180,90),(180,120),(210,120),(x,y)]
+setheading='right'
+
+s=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
+        if event.type==locals.KEYDOWN:
+            if event.key==locals.K_RIGHT and setheading!='left':
+                setheading='right'
+                s=right
+            if event.key==locals.K_LEFT and setheading!='right':
+                setheading='left'
+                s=left
+            if event.key==locals.K_UP and setheading!='down':
+                setheading='up'
+                s=up
+            if event.key==locals.K_DOWN and setheading!='up':
+                setheading='down'
+                s=down           
+    if setheading=='right':
+        x+=30
+    elif setheading=='left':
+        x-=30
+    elif setheading=='up':
+        y-=30
+    else:
+        y+=30            
     p.append((x,y))
     p.append((x,y))
     p.pop(0)
     p.pop(0)
     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,p[-1])
+    screen.blit(s,p[-1])
     for i in range(len(p)-1):
     for i in range(len(p)-1):
         screen.blit(body,p[i])
         screen.blit(body,p[i])
     #screen.blit(body, (210, 120))
     #screen.blit(body, (210, 120))