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()
@@ -23,6 +24,9 @@ position = [(180, 90), (180, 120), (210, 120), (x, y)]
 setheading = "right"
 snake_head = right
 
+apple_x=360
+apple_y=300
+
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -38,7 +42,7 @@ while True:
             if event.key == locals.K_UP and setheading != "down":
                 setheading = 'up'
                 snake_head = up
-            if event.key == locals.K_DOWN and setheading != "up":
+            if event.key == locals.K_DWON and setheading != "up":
                 setheading = 'down'
                 snake_head = down
 
@@ -53,6 +57,14 @@ while True:
         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
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
@@ -62,7 +74,7 @@ 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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