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()
 
+FPSCLOCK=pygame.time.Clock()
 # 创建一个窗口
 screen = pygame.display.set_mode((660, 480))
 
-FPSCLOCK=pygame.time.Clock()
 # 背景
 background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
@@ -18,25 +18,28 @@ up = pygame.image.load('up.png')
 down = pygame.image.load('down.png')
 
 x,y=240,120
+position = [(180,90),(180,120),(210,120),(x,y)]
 
+setheading = 'right'
+snake_head = 'right'
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             # 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"
+            if event.key == locals.K_RIGHT and setheading !="left":
                 setheading = 'right'
-                snake_head == 'right'
-            if event.key == locals.K_LEFT and 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"
+                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"
+                snake_head = up
+            if event.key == locals.K_DOWN and setheading !="up":
                 setheading = 'down'
-                snake_head == 'down'
+                snake_head = down
     
 
     if setheading == "right":
@@ -48,14 +51,24 @@ while True:
     else:
         y += 30
     position.append((x,y))
-    screen.blit(snake_head,position[-1])
-    screen.blit(right, (x, y))
     # 将贪吃蛇的身体画上去
-    screen.blit(body, (210, 120))
-    screen.blit(body, (180, 120))
-    screen.blit(body, (180, 90))
+    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)
+        
     # 将果实画上去
-    screen.blit(food, (360, 300))
+    screen.blit(background, (0, 0))
     # 刷新画面
+    screen.blit(snake_head,position[-1])
+
+    for i in range(len(position)-1):
+        screen.blit(body,position[i])
+
+    screen.blit(food(360,300))
+
     pygame.display.update()
     FPSCLOCK.tick(3)
\ No newline at end of file