save project

snake.py

 import pygame
 from pygame import locals
 import random
-
-FK = pygame.time.Clock()
+pygame.init()
+FPSCLOCK = pygame.time.Clock()
 
 # 初始化pygame，为使用硬件做准备
-pygame.init()
+
 
 # 创建一个窗口
 screen = pygame.display.set_mode((660, 480))
@@ -45,9 +45,7 @@ while True:
             if event.key == locals.K_DOWN and setheading != "up":
                setheading = 'down' 
                snake_head = down
-        if x==apple_x and y==apple_y:
-            apple_x=random.randint(0,660)
-            apple_y=random.randint(0,480)  
+        
             
             
     
@@ -61,8 +59,13 @@ while True:
         y += 30
     
     position.append((x,y))
+    if x==apple_x and y==apple_y:
+            num1=random.randint(1,22)
+            num2=random.randint(1,16)  
+            apple_x=num1*30-30
+            apple_y=num2*30-30
+    else:
         position.pop(0)
-    # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
     screen.blit(snake_head, position[-1])
@@ -73,4 +76,4 @@ while True:
     screen.blit(food, (apple_x, apple_y))
     # 刷新画面
     pygame.display.update()
-    FK.tick(3)
\ No newline at end of file
+    FPSCLOCK.tick(3)
\ No newline at end of file