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()
@@ -53,8 +55,15 @@ while True:
         y -= 30
     else:
         y += 30
-    position.append((x, y))
-    position.pop(0)
+    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))
     # 将贪吃蛇的头画上去
@@ -64,7 +73,7 @@ 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)
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