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
+import random
+# 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))
-background=pygame.image.load('bg.png')
-right=pygame.image.load('right.png')
-left=pygame.image.load('left.png')
-up=pygame.image.load('up.png')
-down=pygame.image.load('down.png')
-body=pygame.image.load('body.png')
-food=pygame.image.load('apple.png')
-s=pygame.time.Clock()
-sethending='right'
-snake_head=right
-x,y=240,120
-position=[(180,90),(180,120),(210,120),(x,y)]
+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')        # 身体
+left = pygame.image.load('left.png')        # 头 朝左
+up = pygame.image.load('up.png')            # 头 朝上
+down = pygame.image.load('down.png')        # 头 朝下
+setheading = "right"
+snake_head = right
+x, y = 240, 120
+apple_x=360
+apple_y=300
+position = [(180, 90), (180, 120), (210, 120), (x, y)]
+
+
+
 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()
-        elif event.type==locals.KEYDOWN:
-            if event.key==locals.K_RIGHT and sethending != 'left':
-                sethending='right'
-                snake_head=right
-            if event.key==locals.K_LEFT and sethending != 'right':
-                sethending='left'
-                snake_head=left
-            if event.key==locals.K_UP and sethending != 'down':
-                sethending='up'
-                snake_head=up
-            if event.key==locals.K_DOWN and sethending != 'up':
-                sethending='down'
-                snake_head=down
-    if sethending=='right':                       
-        x=x+30
-    elif sethending=='left':                       
-        x=x-30
-    elif sethending=='up':                       
-        y=y-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
+
+    # 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:
     else:
-        y=y+30
-    position.append((x,y))
+        y += 30
+    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)
-    screen.blit(background,(0,0))
-    screen.blit(right,position[-1])
+    # 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):
     for i in range(len(position)-1):
-        screen.blit(body,position[i])
-    # screen.blit(body,(210,120))
-    # screen.blit(body,(180,120))
-    # screen.blit(body,(180,90))
-    screen.blit(food,(360,300))
+        screen.blit(body, position[i])
+
+    # 将果实画上去
+    screen.blit(food, (apple_x,apple_y ))
+    # 刷新画面
     pygame.display.update()
     pygame.display.update()
-    s.tick(3)
+    FPSCLOCK.tick(3)
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