save project

snake.py

@@ -14,21 +14,47 @@ screen = pygame.display.set_mode((660, 480))
 # 背景
 background = pygame.image.load('bg.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')
 body = pygame.image.load('body.png')
 FPSCLOCK=pygame.time.Clock()
+a=right
+setheading = "left"
 while True:
-    x += 30
+    
+    if setheading == "right":
+        x+=30
+        a=right
+    if setheading == "left":
+        x-=30
+        a=left
+    if setheading == "up":
+        y-=30
+        a=up
+    if setheading == "down":
+        y+=30
+        a=down
     sb.append((x,y))
     sb.pop(0)
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
+        if event.type==locals.KEYYDOWN:
+            if event.key==locals.K_RIGHT and setheading !="left"
+                setheading="right"
+            if event.key==locals.K_LEFT and setheading !="right"
+                setheading="left"
+            if event.key==locals.K_UP and setheading !="down"
+                setheading=="up"
+            if event.key==locals.K_DOWM and setheading !="up"
+                setheading="down"
     
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right, (x, y))
+    screen.blit(a, (x, y))
     # 将贪吃蛇的身体画上去
     for i in range(len(sb)-1):
         screen.blit(body,sb[i])