save project

snake.py

@@ -19,7 +19,7 @@ FPS = pygame.time.Clock()
 x,y = 240,120
 position = [(180,90),(180,120),(210,120),(x,y)]
 heading = "right"
-
+head = right
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -28,25 +28,29 @@ while True:
         if event.type == locals.KEYDOWN:
             if event.key == locals.K_RIGHT and heading != "left":
                 heading = "right"
+                head = right
             if event.key == locals.K_LEFT and heading != "right":
                 heading = "left"
+                head = left
             if event.key == locals.K_UP and heading != "down":
                 heading = "up"
+                head = up
             if event.key == locals.K_DOWN and heading != "up":
                 heading = "down"
+                head = down
     if heading == "right":
         x += 30
     if heading == "left":
         x -= 30   
     if heading == "up":
-        x -= 30
+        y -= 30
     if heading == "down":
-        x += 30
+        y += 30
     position.append((x,y))
     position.pop(0)
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right, (x, y))
+    screen.blit(head, (x, y))
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
         screen.blit(body,position[i])
@@ -54,4 +58,4 @@ while True:
     screen.blit(food, (360, 300))
     # 刷新画面
     pygame.display.update()
-    FPS.tick(3)
\ No newline at end of file
+    FPS.tick(5)
\ No newline at end of file