python3小游戏(1):吃苹果小游戏

2023-01-31 01:01:49 苹果 小游戏 python3

注意,申请时说明加入原因,另外这个群都是一群和我一样的小白,大家谁也不说谁,共同进步(ps:写这个文章时,只有我一人)

1.本文是基于pygame库开发的小游戏,主要功能有:

(1).可以通过键盘的上下左右四个键来控制主人公小刘的位置(同是移动方向不同,小刘的姿势也不同)

(2).游戏开始界面会随机飘着大约40个苹果,如果小刘碰到苹果,会把它吃掉,同是增加界面下方显示的血量

(3).吃完苹果,game over

 

 

2.从游戏开发及完成的全过程看,分为个步骤:

 

(1).开发工具PyCharmpython版本python3.6;window版本win7 64位

 

(2).需要安装pygame库,

(3).如果要打包成exe可执行程序,则需要安装pyinstaller库,

1.造个小小小库(哈~可见有多小):

        (1).之所以造库是因为我们这个小游戏中有两个活物:主人公小刘和苹果;这个库有两功能:

                    a.主人公小刘,我们有一个矩阵图片如下,拿出“找泥妹”的眼里看一下有啥区别。(一天后。。。)。                        昨天我们让你看下面图片找出区别,我公布答案吧,每一行代表一个方向,同一行内,每一列代表小刘走一步需                          要怎么迈步。我们需要一个方法在小刘拐弯时知道他拐哪边,在下图聚焦到一个姿势显示到界面。(下面图片想用的话,直接右键下载即可)

                   

                     b.苹果:我们因为需要在游戏开始在界面漂浮40个苹果,并在小刘吃了一个后把他去掉,这样不可能一个一个创建,这 里也需要一个方法

          (2).代码实现(我把这文件命名为myLibrary.py)

 


# -*- coding: utf-8 -*-
# @Time    : 2018/5/17 0017 上午 8:32
# @Author  : silents
# @FileName: myLibrary.py
# @Software: PyCharm
# @Blog    :Http://blog.csdn.net/chq1005613740
import pygame
from pygame.locals import *
class Point():
    def __init__(self, x,y):
        self.X =x
        self.Y =y

class MySprite(pygame.sprite.Sprite):
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.master_image = None
        self.frame = 0
        self.old_frame = -1
        self.frame_width = 1
        self.frame_height = 1
        self.first_frame = 0
        self.last_frame = 0
        self.columns = 1
        self.last_time = 0
        self.direction = 0
        self.X = 0
        self.Y = 0
        #新增了velocity属性,他是一个point
        self.velocity = Point(0.0,0.0)

    def load(self, filename, position, bg_size):
        self.image = pygame.image.load(filename).convert_alpha()
        self.rect = self.image.get_rect()
        #苹果的位置
        self.rect.left, self.rect.top = position
        #self.speed = speed
        self.width, self.height = bg_size[0], bg_size[1]

    def load_column(self, filename, position, bg_size, columns):
        self.master_image = pygame.image.load(filename).convert_alpha()
        self.frame_width = bg_size[0]
        self.frame_height = bg_size[1]
        self.position = position
        self.rect  = self.master_image.get_rect()
        self.ori_frame_width = self.rect.width
        self.ori_frame_height = self.rect.height
        self.rect.left, self.rect.top = position
        self.rect.width,self.rect.height = bg_size[0],bg_size[1]
        self.columns = columns
        self.last_frame = (self.ori_frame_width // bg_size[0]) * (self.ori_frame_height // bg_size[1]) - 1

    def update(self, current_time, rate=60):
        if current_time > self.last_time + rate:
            self.frame += 1
            if self.frame > self.last_frame:
                self.frame = self.first_frame
            self.last_time = current_time
        if self.frame != self.old_frame:
            frame_x = (self.frame % self.columns) * self.frame_width
            frame_y = (self.frame // self.columns) * self.frame_height
            # rect = ( self.X, self.Y, self.frame_width, self.frame_height )
            rect = ( frame_x, frame_y, self.frame_width, self.frame_height )
            self.rect.left, self.rect.top = self.X, self.Y
            self.image = self.master_image.subsurface(rect)
            self.old_frame = self.frame

可以看出代码很少,主要分三部分(请自行忽略初始化部分):

a.  方法load:主要是为创建苹果而准备,

        加载图片 -->  获取图片大小  -->  获取图片位置  

b.  方法load_column:主要为小刘而准备,

        加载图片 --> 获取图片位置 --> 获取图片大小  --> 把图片切割成64块(每块一个姿势)

c.  方法update:也为小刘而准备,

       对load_colunm中切割完的64块piece进行切换,同时移动位置

2.写一个小小调用(可见比上面少了一个“小”,有点麻烦,心脏不好,高血压勿进):

  (1). 开始之前需要先了解几个概念:

           a. 精灵:你可以简单的理解为一个需要显示的图片

           b. 精灵组:你可以简单的理解为一组需要显示的图片

           c.碰撞检测:在程序中,我们理解为两个精灵是否碰撞,精灵和精灵组是否碰撞,精灵组和精灵组是否碰撞

   (2). 大致流程:

          a.创建玩家精灵组:里面是上面切割完的64块小刘

          b. 创建苹果精灵组:里面是在界面位置随机的40个苹果

          c. 设置定时器:定时更新界面

          d.检测键盘按键:作为小刘移动的依据

          e.移动小刘:让他去吃苹果

          f.检测碰撞:此游戏中属于精灵和精灵组的碰撞(两次检测,逐一分析代码),把碰撞的苹果吃掉

          g. 更新血量:小刘吃一个苹果就增加一点血

   (3). 代码搬运(此文件我把它叫walk.py)


# -*- coding: utf-8 -*-
# @Time       : 2018/5/17 0017 上午 10:30
# @Author     : silents
# @FileName   : fifth_walk.py
# @Software   : PyCharm
# @Blog       :http://blog.csdn.net/chq1005613740
# @Description: Buttons to control the movement of people,
#               people eat apples,
#               people eat apples will increase blood,
#               eat blood over

import itertools, sys, time, random, math, pygame
from pygame.locals import *
from game_Go.myLibrary import *

def calc_velocity(direction, vel=1.0):
    velocity = Point(0, 0)
    if direction == 0:  # 上
        velocity.Y = -vel
    elif direction == 2:  # 右
        velocity.X = vel
    elif direction == 4:  # 下
        velocity.Y = vel
    elif direction == 6:  # 左
        velocity.X = -vel
    return velocity


pygame.init()
screen = pygame.display.set_mode((800, 600))
pygame.display.set_caption("吃苹果")
font = pygame.font.SysFont('arial',36)
timer = pygame.time.Clock()

# 创建精灵组
player_group = pygame.sprite.Group()
food_group = pygame.sprite.Group()

# 初始化玩家精灵组
#def load_column(self, filename, position, bg_size, columns):
position = 800/2-10,600/2+10
bg_size = 62.5, 62.5
player = MySprite()
player.load_column("res//walk.png",position, bg_size, 8)
# player.position = 80, 80
player.direction = 4
player_group.add(player)

# 初始化food精灵组

for n in range(1, 40):
    food = MySprite();
    position = random.randint(0, 750), random.randint(0, 550)
    bg_size = 50, 48
    food.load("res//apple.png", position, bg_size)
    food_group.add(food)

game_over = False
player_moving = False
player_health = 0

while True:
    timer.tick(30)
    ticks = pygame.time.get_ticks()

    for event in pygame.event.get():
        if event.type == QUIT:
            pygame.quit()
            sys.exit()
    keys = pygame.key.get_pressed()
    if keys[K_ESCAPE]:
        sys.exit()
    elif keys[K_UP] or keys[K_w]:
        player.direction = 0
        player_moving = True
    elif keys[K_RIGHT] or keys[K_d]:
        player.direction = 2
        player_moving = True
    elif keys[K_DOWN] or keys[K_s]:
        player.direction = 4
        player_moving = True
    elif keys[K_LEFT] or keys[K_a]:
        player.direction = 6
        player_moving = True
    else:
        player_moving = False

    if not game_over:
        # 根据角色的不同方向,使用不同的动画帧
        player.first_frame = player.direction * player.columns
        player.last_frame = player.first_frame + player.columns - 1
        if player.frame != player.first_frame:
            player.frame = player.first_frame

        if not player_moving:
            # 当停止按键(即人物停止移动的时候),停止更新动画帧
            player.frame = player.first_frame = player.last_frame
        else:
            player.velocity = calc_velocity(player.direction, 2)
            player.velocity.X *= 2
            player.velocity.Y *= 2

        # 更新玩家精灵组
        player_group.update(ticks, 50)

        # 移动玩家
        if player_moving:
            player.X += player.velocity.X
            player.Y += player.velocity.Y
            if player.X  < 0:
                player.X = 0
            elif player.X > 700:
                player.X = 700
            if player.Y  <0:
                player.Y = 0
            elif player.Y > 500:
                player.Y = 500
        myfont = pygame.font.SysFont('arial',36)
        white = 255, 255, 255
        textImage = myfont.render("Hello Pygame:%i-%i" %(player.X,player.Y), True, white)

        # 检测玩家是否与食物冲突,是否吃到果实
        attacker = None
        attacker = pygame.sprite.spritecollide(player, food_group, False, pygame.sprite.collide_circle)
        if len(attacker) !=0:
            for atta in attacker:
                # if pygame.sprite.collide_circle(player, atta):
                if pygame.sprite.collide_circle_ratio(0.65)(player, atta):
                    player_health += 2;
                    food_group.remove(atta);
        if player_health > 100: player_health = 100
        # 更新食物精灵组
        # food_group.update(ticks, 50)

        if len(food_group) == 0:
            game_over = True
    # 清屏
    screen.fill((50, 50, 100))

    # 绘制精灵
    food_group.draw(screen)
    player_group.draw(screen)

    # 绘制玩家血量条
    pygame.draw.rect(screen, (50, 150, 50, 180), Rect(300, 570, player_health * 2, 25))
    pygame.draw.rect(screen, (100, 200, 100, 180), Rect(300, 570, 200, 25), 2)

    if game_over:
        textImage = font.render("G A M E   O V E R", True, (0,0,0))
        screen.blit(textImage, (100,100))
        # print_text(font, 300, 100, "G A M E   O V E R")

    screen.blit(textImage, (300,500))
    pygame.display.update()

 

(因为本人菜鸟,大家过程中有问题就留言,我会的肯定马上回复,不像某些大神那么忙)

 

 

      现在我们可以把py打包成exe了,嘤嘤嘤。。。

1.安装pyinstaller库

    cmd到Python3路径下,执行如下命令:

            pip3 install pyinstaller

2. 打包

    pyinstaller -F -w walk.py

3. 嘚瑟

     请自行脑补

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