save project

snake.py

 import pygame
+import random
 from pygame import locals
 
 # 初始化pygame，为使用硬件做准备
@@ -19,7 +20,10 @@ down = pygame.image.load('down.png')        # 头 朝下
 
 x, y = 240, 120
 position = [(180, 90), (180, 120), (210, 120), (x, y)]
-
+a2x=random.randint(1,21)
+a2y=random.randint(1,15)
+apple_x=30*a2x
+apple_y=30*a2y
 setheading = "right"
 snake_head = right
 
@@ -54,6 +58,12 @@ while True:
     position.append((x, y))
     position.pop(0)
     # 将背景图画上去
+    if y==apple_y and apple_x==x:
+        a2x=random.randint(1,21)
+        a2y=random.randint(1,15)
+        apple_x=30*a2x
+        apple_y=30*a2y
+        position.append((x,y))
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
     screen.blit(snake_head, position[-1])
@@ -62,7 +72,8 @@ 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(7)
\ No newline at end of file