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()
+food_x,food_y=360,300
 
 # 创建一个窗口
 screen = pygame.display.set_mode((660, 480))
@@ -41,7 +43,13 @@ while True:
             if event.key == locals.K_DOWN and setheading != "up":
                 setheading = 'down'
                 snake_head = down
-
+    if x==food_x and y==food_y :
+        num1=random.randint(1,22)
+        num2=random.randint(1,16)
+        food_x=30*num1-30
+        food_y=30*num2-30
+    else :
+        position.pop(0)
     # 设置贪吃蛇的头部坐标
     if setheading == "right":
         x += 30
@@ -52,7 +60,6 @@ while True:
     else:
         y += 30
     position.append((x, y))
-    position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
@@ -62,7 +69,7 @@ while True:
         screen.blit(body, position[i])
 
     # 将果实画上去
-    screen.blit(food, (360, 300))
+    screen.blit(food, (food_x, food_y))
     # 刷新画面
     pygame.display.update()
-    FPSCLOCK.tick(3)
\ No newline at end of file
+    FPSCLOCK.tick(8)
\ No newline at end of file