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demo2.py

+import pygame
+from pygame import locals
+import os
+import sys
+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))
+clock = pygame.time.Clock()  # 创建一个计时器
+# 背景
+background = pygame.image.load('bg.png')
+right = pygame.image.load('right.png')
+food = pygame.image.load('apple.png')
+body = pygame.image.load('body.png')
+
+x, y = 360, 300
+position = [(330, 300), (300, 300), (270, 300), (x, y)]
+
+setheading = 'right'
+
+food_x , food_y = 180 , 300 #初始化苹果坐标
+speed = 3
+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'
+            if event.key == locals.K_LEFT and setheading != 'right':
+                setheading = 'left'
+            if event.key == locals.K_UP and setheading != 'down':
+                setheading = 'up'
+            if event.key == locals.K_DOWN and setheading != 'up':
+                setheading = 'down'
+    if setheading == 'right':
+        x += 30
+    elif setheading == 'left':
+        x -= 30
+    elif setheading == 'up':
+        y -= 30
+    else:
+        y += 30
+
+    if (x,y) in position:  #碰到身体就结束
+        exit()
+
+    position.append((x, y))
+    if x == food_x and y == food_y:
+        num1 = random.randint(0,21)
+        num2 = random.randint(0,15)
+        food_x = num1 * 30
+        food_y = num2 * 30
+        speed += 0.5
+    else:
+        position.pop(0)
+    
+    if x < 0 or x > 630 or y < 0 or y > 450:
+        exit()  #结束程序
+
+    # 将背景图画上去
+    screen.blit(background, (0, 0))
+    # 将贪吃蛇画上去
+    screen.blit(right, (x, y))
+    for i in range(len(position)-1):
+        screen.blit(body, position[i])
+        
+
+    # 将果实画上去
+    screen.blit(food, (food_x, food_y))
+    # 刷新画面
+    pygame.display.update()
+    clock.tick(speed)  # 设置帧数

demo3.py

+import pygame
+from pygame import locals
+import os
+import sys
+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))
+
+# 背景
+background = pygame.image.load('bg.png')
+
+right = pygame.image.load('right.png')  # 右
+left = pygame.image.load('left.png')  # 左
+up = pygame.image.load('up.png')  # 上
+down = pygame.image.load('down.png')  # 下
+
+food = pygame.image.load('apple.png')
+body = pygame.image.load('body.png')
+clock = pygame.time.Clock()  # 创建时钟
+x, y = 360, 300  # 蛇头初始坐标
+# 把身体和蛇头初始坐标存进列表中
+position = [(270, 300), (300, 300), (330, 300), (x, y)]
+
+setheading = 'right'  # 初始朝向
+snake_head = right  # 设置初始蛇头图片
+
+apple_x, apple_y = 180, 300
+speed = 3
+
+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_w and setheading != 'down':
+                setheading = 'up'
+                snake_head = up
+            if event.key == locals.K_d and setheading != 'left':
+                setheading = 'right'
+                snake_head = right
+            if event.key == locals.K_a and setheading != 'right':
+                setheading = 'left'
+                snake_head = left
+            if event.key == locals.K_s and setheading != 'up':
+                setheading = 'down'
+                snake_head = down
+    if setheading == 'right':
+        x += 30
+    elif setheading == 'left':
+        x -= 30
+    elif setheading == 'up':
+        y -= 30
+    elif setheading == 'down':
+        y += 30
+    position.append((x, y))
+    if x == apple_x and y == apple_y:
+        num1 = random.randint(0,21)   #横  格子数
+        num2 = random.randint(0, 15)  #竖  格子数
+        apple_x = num1 * 30
+        apple_y = num2 * 30
+        speed += 0.5
+    else:
+        position.pop(0)
+
+    if x < 0 or x > 630 or y < 0 or y > 450 :
+        exit()
+
+    # 将背景图画上去
+    screen.blit(background, (0, 0))
+    # 将贪吃蛇画上去
+    screen.blit(snake_head, (x, y))
+    # 把身体渲染出来
+    for i in range(len(position)-1):
+        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()
+    clock.tick(speed)  # 帧数

snake.py

@@ -8,7 +8,7 @@ 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))
 
 
-FRSCLOCK=pygame.time.Clock()   # 帧数
+
 
 
 # 背景
 # 背景
 background = pygame.image.load('bg.png')
 background = pygame.image.load('bg.png')
@@ -16,28 +16,26 @@ 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')
 
 
-x , y = 240 ,120  #蛇头的初始位置
-poistion = [(210, 120),(180, 120), (180, 90),(x , y)]
-setheading = '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()
-        
 
 
-    
+   
 
 
     # 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, 360,300)
-    
-    
-    screen.blit(body , poistion[i])
+    screen.blit(right, (360 , 300 ))
+    screen.blit(body , (330,300))
+    screen.blit(body , (300,300))
+    screen.blit(body , (270,300))
 
 
     # 将果实画上去
     # 将果实画上去
-    screen.blit(food, (360, 300))
+    screen.blit(food, (180, 300))
     # 刷新画面
     # 刷新画面
     pygame.display.update()
     pygame.display.update()
-    FRSCLOCK.tick(3)  #帧数3
+ 
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+    
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