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()
@@ -18,10 +19,11 @@ up = pygame.image.load('up.png')            # 头 朝上
 down = pygame.image.load('down.png')        # 头 朝下
 
 x, y = 240, 120
-position = [(180, 90), (180, 120), (210, 120), (x, y)]
-
-setheading = "right"
-snake_head = right
+p = [(180, 90), (180, 120), (210, 120), (x, y)]
+ax=360
+ay=300
+sd = "right"
+sh = right
 
 while True:
     for event in pygame.event.get():
@@ -29,40 +31,43 @@ while True:
             # 接收到退出事件后退出程序
             exit()
         if event.type == locals.KEYDOWN:
-            if event.key == locals.K_RIGHT and setheading != "left":
-                setheading = 'right'
-                snake_head = right
-            if event.key == locals.K_LEFT and setheading != "right":
-                setheading = 'left'
-                snake_head = left
-            if event.key == locals.K_UP and setheading != "down":
-                setheading = 'up'
-                snake_head = up
-            if event.key == locals.K_DOWN and setheading != "up":
-                setheading = 'down'
-                snake_head = down
+            if event.key == locals.K_RIGHT and sd != "left":
+                sd = 'right'
+                sh = right
+            if event.key == locals.K_LEFT and sd != "right":
+                sd = 'left'
+                sh = left
+            if event.key == locals.K_UP and sd != "down":
+                sd = 'up'
+                sh = up
+            if event.key == locals.K_DOWN and sd != "up":
+                sd = 'down'
+                sh = down
 
     # 设置贪吃蛇的头部坐标
-    if setheading == "right":
+    if sd == "right":
         x += 30
-    elif setheading == "left":
+    elif sd == "left":
         x -= 30
-    elif setheading == "up":
+    elif sd == "up":
         y -= 30
     else:
         y += 30
-    position.append((x, y))
-    position.pop(0)
+    p.append((x, y))
+    if x==ax and y==ay:
+        ax=random.randint(0,660)
+        ay=random.randint(0,480)
+    p.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])
+    screen.blit(sh, p[-1])
     # 将贪吃蛇的身体画上去
-    for i in range(len(position)-1):
-        screen.blit(body, position[i])
+    for i in range(len(p)-1):
+        screen.blit(body, p[i])
 
     # 将果实画上去
-    screen.blit(food, (360, 300))
+    screen.blit(food, (ax, ay))
     # 刷新画面
     pygame.display.update()
     FPSCLOCK.tick(3)
\ No newline at end of file