save project

snake.py

@@ -18,7 +18,7 @@ down = pygame.image.load('down.png')
 x,y=240,120
 liebiao=[(180,90),(180,120),(210,120),(x,y)]
 
-setheading = "right6"
+setheading = "right"
 snake_head = right
 
 while True:
@@ -26,16 +26,34 @@ while True:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-        if event.key == locals.KEYDOWN:
-            
+        if 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_DOWN and setheading !='up':
+                setheading = "down"
+                snake_head = down
+            if event.key == locals.K_UP and setheading !='down':
+                setheading = "up"
+                snake_head = up
 
-    x+=30
+    if setheading =='right':
+        x+=30
+    elif  setheading =='left':
+        x-=30
+    elif setheading =='up':
+        y-=30
+    else:
+        y+=30
     liebiao.append((x,y))
     liebiao.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right, liebiao[-1])
+    screen.blit(snake_head, liebiao[-1])
     # 将贪吃蛇的身体画上去
     for i in range(len(liebiao)-1):
         screen.blit(body, liebiao[i])