save project

snake.py

+
 import pygame
 import pygame
 from pygame import locals
 from pygame import locals
-# 初始化pygame，为使用pygame做准备
+
+# 初始化pygame，为使用硬件做准备
 pygame.init()
 pygame.init()
-screen=pygame.display.set_mode((660,480))
-q=pygame.time.Clock()
-background=pygame.image.load('bg.png')
-headright=pygame.image.load("right.png")
-apple=pygame.image.load('apple.png')
-body=pygame.image.load('body.png')
-x,y=240,120
-e=[(180,90),(180,120),(210,120),(x,y)]
+
+# 创建一个窗口
+screen = pygame.display.set_mode((660, 480))
+
+FPSCLOCK = pygame.time.Clock()  # pygame时钟，控制游戏速度（帧数）
+# 背景
+background = pygame.image.load('bg.png')
+right = pygame.image.load('right.png')      # 头 朝右
+food = pygame.image.load('apple.png')       # 食物 苹果
+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
+position = [(180, 90), (180, 120), (210, 120), (x, y)]
+
+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
             exit()
             exit()
-    x+=30
-    e.append((x,y))
-    e.pop(0)
-    screen.blit(background,(0,0))
-    screen.blit(headright,e[-1])
-    for i in range(len(e)-1):
-        screen.blit(body,e[i])
-    screen.blit(apple,(360,300))  
-    pygame.display.update()  
-    q.tick(3)                               
+        elif 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
+
+    # 设置贪吃蛇的头部坐标
+    if setheading=="right":
+        x+=30
+    elif setheading=="left":
+        x-=30
+    elif setheading=="up":
+        y-=30
+    else :
+        y+=30
+    position.append((x, y))
+    position.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])
+    # 将贪吃蛇的身体画上去
+    for i in range(len(position)-1):
+        screen.blit(body, position[i])
 
 
+    # 将果实画上去
+    screen.blit(food, (360, 300))
+    # 刷新画面
+    pygame.display.update()
+    FPSCLOCK.tick(3)