save project

snake.py

 import pygame
 import pygame
 from pygame import locals
 from pygame import locals
-
+import random
 # 初始化pygame，为使用硬件做准备
 # 初始化pygame，为使用硬件做准备
 pygame.init()
 pygame.init()
 
 
@@ -12,8 +12,16 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.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')
 x,y=240,120
 x,y=240,120
 position=[(180,90),(180,120),(210,120),(x,y)]
 position=[(180,90),(180,120),(210,120),(x,y)]
+apple_x=360
+apple_y=300
+
+setheading='right'
+snake_head=right
 
 
 while True:
 while True:
     for event in pygame.event.get():
     for event in pygame.event.get():
@@ -21,14 +29,18 @@ while True:
             # 接收到退出事件后退出程序
             # 接收到退出事件后退出程序
             exit()
             exit()
         if event.type==locals.KEYDOWN:
         if event.type==locals.KEYDOWN:
-            if event.key==locals.k_RIGHT and setheading!="left":
-                setheading="right"   
-            if event.key==locals.k_LEFT and setheading!="right":
+            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"
                 setheading="left"
-            if event.key==locals.k_UP and setheading!="down":
+                snake_head=left
+            if event.key==locals.K_UP and setheading!="down":
                 setheading="up"
                 setheading="up"
-            if event.key==locals.k_DOWN and setheading!="up":
+                snake_head=up
+            if event.key==locals.K_DOWN and setheading!="up":
                 setheading="down"
                 setheading="down"
+                snake_head=down
     if setheading =="right":
     if setheading =="right":
         x+=30
         x+=30
     elif setheading =="left":
     elif setheading =="left":
@@ -37,14 +49,16 @@ while True:
         y-=30                 
         y-=30                 
     else:
     else:
         y+=30
         y+=30
-
-
     position.append((x,y))
     position.append((x,y))
+    if x==apple_x and y==apple_y:
+        apple_x=random.randint(0,630)
+        apple_y=random.randint(0,450)
+   
     position.pop(0)
     position.pop(0)
     # 将背景图画上去
     # 将背景图画上去
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
     # 将贪吃蛇画上去
-    screen.blit(right, position[-1])
+    screen.blit(snake_head,(x,y))
     # 将贪吃蛇的身体画上去
     # 将贪吃蛇的身体画上去
     # screen.blit(body, (210, 120))
     # screen.blit(body, (210, 120))
     # screen.blit(body, (180, 120))
     # screen.blit(body, (180, 120))
@@ -52,7 +66,7 @@ while True:
     for i in range(len(position)-1):
     for i in range(len(position)-1):
         screen.blit(body,position[i])
         screen.blit(body,position[i])
     # 将果实画上去
     # 将果实画上去
-    screen.blit(food, (360, 300))
+    screen.blit(food, (apple_x,apple_y))
     # 刷新画面
     # 刷新画面
     pygame.display.update()
     pygame.display.update()
     FPSCLOCK.tick(3)
     FPSCLOCK.tick(3)