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()
 
-# 创建一个窗口
-screen = pygame.display.set_mode((660, 480))
+# 创建一个窗
+screen = pygame.display.set_mode((660,420))
 
 FPSCLOCK = pygame.time.Clock()
 x,y=240,120
@@ -16,20 +17,58 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
+left = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down =pygame.image.load('down.png')
+setheading = 'right'
+snake_head = right
+apple_x=360
+apple_y=240
+
 
 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()
-    x += 30
+    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 setheading == "up":
+        y = y-30
+
+    elif setheading == "down":
+        y=y+30
+
+    elif setheading == "right":
+        x=x+30
+    else:
+        x=x-30
     position.append((x,y))
+
+    if x == apple_x and y == apple_y:
+        apple_x=random.randomint[(0,21)]*30
+
+
+   
     position.pop(0)
 
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right, position[-1])
+    screen.blit(snake_head, position[-1])
     # 将贪吃蛇的身体画上去
     # screen.blit(body, (210, 120))
     # screen.blit(body, (180, 120))
@@ -40,7 +79,7 @@ while True:
 
 
     # 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()