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))
-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
-
-x, y = 240, 120
-position = [(180, 90), (180, 120), (210, 120), (x, y)]
-
-setheading = "right"
-snake_head = right
-
+right = pygame.image.load('right.png')
+left = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.png')
+food = pygame.image.load('apple.png')
+body = pygame.image.load('body.png')
+FPS = pygame.time.Clock()
+x,y = 240,120
+position = [(180,90),(180,120),(210,120),(x,y)]
+heading = "right"
+head = right
+apple_x = random.randint(0,21)*30
+apple_y = random.randint(0,15)*30
 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()
         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":
+            if event.key == locals.K_RIGHT and heading != "left":
+                heading = "right"
+                head = right
+            if event.key == locals.K_LEFT and heading != "right":
+                heading = "left"
+                head = left
+            if event.key == locals.K_UP and heading != "down":
+                heading = "up"
+                head = up
+            if event.key == locals.K_DOWN and heading != "up":
+                heading = "down"
+                head = down
+    if heading == "right":
         x += 30
-    elif setheading == "left":
-        x -= 30
-    elif setheading == "up":
+    if heading == "left":
+        x -= 30   
+    if heading == "up":
         y -= 30
-    else:
+    if heading == "down":
         y += 30
-    position.append((x, y))
-    position.pop(0)
-    # 将背景图画上去
+    
+    position.append((x,y))
+    if apple_x == x and apple_y == y:
+        apple_x = random.randint(0,21)*30
+        apple_y = random.randint(0,15)*30            
+    else:
+        position.pop(0)
     screen.blit(background, (0, 0))
-    # 将贪吃蛇的头画上去
-    screen.blit(snake_head, position[-1])
+    # 将贪吃蛇画上去
+    screen.blit(head, (x, y))
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
-        screen.blit(body, position[i])
-
+        screen.blit(body,position[i])
     # 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()
-    FPSCLOCK.tick(3)
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+    FPS.tick(5)
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