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()
 
 
 # 创建一个窗口
 # 创建一个窗口
 screen = pygame.display.set_mode((660, 480))
 screen = pygame.display.set_mode((660, 480))
 FPSCLOCK = pygame.time.Clock()
 FPSCLOCK = pygame.time.Clock()
+
 # 背景
 # 背景
 background = pygame.image.load('bg.png')
 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)]
+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():
         if event.type == locals.QUIT:
         if event.type == locals.QUIT:
             # 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()
-    x += 30
-    # 将背景图画上去
-    screen.blit(background, (0, 0))
+        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 == "right":
+        x += 30
+    elif setheading == "left":  
+        x -= 30
+    elif setheading == "up":   
+        y -= 30
+    else:
+        y += 30        
+    
+    position.append((x,y))
+    if x == apple_x and y == apple_y:
+        apple_x = random.randint(0,660)
+        apple_y = random.randint(0,480)
+    position.pop(0)
+     # 将背景图画上去
+    screen.blit(background , (0, 0))
     # 将贪吃蛇画上去
     # 将贪吃蛇画上去
-    screen.blit(right, (x, y))
+    screen.blit(snake_head,  position[-1])
+    for i in range(len(position)-1):
+         screen.blit(body,position[i])
     # 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, (180, 120))
-    screen.blit(body, (180, 90))
+    #screen.blit(body, (210, 120))
+    #screen.blit(body, (180, 120))
+    #screen.blit(body, (180, 90))
     # 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)