save project

snake.py

 import pygame
 from pygame import locals
-
+import random
 # 初始化pygame，为使用硬件做准备
 pygame.init()
 
@@ -53,11 +53,15 @@ while True:
     else:
         y += 30
     position.append((x, y))
-    position.pop(0)
+    
     if x == apple_x and y == apple_y:
-        apple_x = random.randint(0,660)
-        apple_y = random.randint(0,480)
-    # 将背景图画上去
+        
+        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))
     # 将贪吃蛇的头画上去
     screen.blit(snake_head, position[-1])
@@ -66,7 +70,7 @@ while True:
         screen.blit(body, position[i])
 
     # 将果实画上去
-    screen.blit(food, (360, 300))
+    screen.blit(food, (apple_x, apple_y))
     # 刷新画面
     pygame.display.update()
-    FPSCLOCK.tick(3)
\ No newline at end of file
+    FPSCLOCK.tick(10)
\ No newline at end of file