save project

snake.py

@@ -14,12 +14,15 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.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
 position=[(180,90),(180,120),(210,120),(x,y)]
 
 setheading="right"
-snake_head='right'
+snake_head=right
 
 
 while True:
@@ -30,16 +33,16 @@ while True:
         elif event.type==locals.KEYDOWN:
             if event.key==locals.K_RIGHT and setheading !="left":
                 setheading='right'
-                snake_head='right'
+                snake_head=right
             if event.key==locals.K_LEFT and setheading !="right":
                 setheading='left'
-                snake_head='left'
-            if event.key==locals.K_UP and setheading !="up":
+                snake_head=left
+            if event.key==locals.K_UP and setheading !="down":
                 setheading='up'
-                snake_head='up'  
-            if event.key==locals.K_DOWN and setheading !="down":
+                snake_head=up  
+            if event.key==locals.K_DOWN and setheading !="up":
                 setheading='down'
-                snake_head='down'   
+                snake_head=down 
     if setheading=="right":
         x+=30
     elif setheading=="left":
@@ -55,12 +58,12 @@ while True:
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(snake_head,positino[-1])
+    screen.blit(snake_head,position[-1])
     # 将贪吃蛇的身体画上去
-    for i in  range(len(positino)-1):
-        screen.blit(body,positino[i])
+    for i in  range(len(position)-1):
+        screen.blit(body,position[i])
     # 将果实画上去
     screen.blit(food, (360, 300))
     # 刷新画面
     pygame.display.update()
-    FPSCLOCK.tick(4)
\ No newline at end of file
+    FPSCLOCK.tick(5)
\ No newline at end of file