Pygame实战之实现扎气球游戏

导语

​前几天，有人私信小编：

说陪女朋友在小广场上面逛街玩儿扎气球：结果一个都没扎破，扎心了老铁。

女朋友都要离家出走了~让我给想想办法：小编只想给你一个表情。

​哈哈哈，开玩笑的~于是，为了满足需求，小编做了一个重大决定：熬夜给他做了一款扎气球的小

游戏，可以拿去哄哄女朋友啦~

这游戏做完之后木子已经替大家玩儿过了，这个很棒，不信的话你自己试试？

正文

本文的扎气球小游戏原型就是路边的扎气球的游戏撒，基于pygame做的！

就准备好射的箭、不同颜色的气球、一张背景图片、然后爆炸的特效就可。哦~对了音乐还是要准备，游戏的话有音乐背景才更有趣哦~

一、准备中

1）素材资料

首先是准备好需要的素材、图片、背景音乐：

2）运行环境

环境安装 本文用到的运行环境：python3.7、pycharm社区版2020、pygame游戏模块部分自带

模块直 接导入不需要安装。

模块安装：

pip install -i https://pypi.douban.com/simple/ +模块名

二、代码演示

这款小游戏总的有6个.py文件组成的，代码比较都啦，这里就只放一点点哈！

主程序运行：

​from game import *
 
def main() :
    intro = true
    game = game()
    game.loadmusic()
    game.readhighscore()
    pygame.mixer.music.play(loops=-1)
    while intro:
        for event in pygame.event.get():
            if event.type == pygame.quit:
                intro = false
        game.screen.fill(sky_blue)
        game.screen.blit(game.background, game.background_rect)
        game.draw.button(200, 2*game.height/3, "play", bright_green, green, game.gameloop, 150, 100)
        game.draw.button(game.width/2 - 75, 2*game.height/3, "play timed", bright_red, red, game.time_restricted, 150, 100)
        game.draw.button(game.width-350, 2*game.height/3, "quit", bright_green, green, quit, 150, 100)
        game.draw.draw_text("__arcus__", game.width/2, game.height/3, 200, blue)
        game.draw.draw_text("high score:%d" % (game.highscore), game.width-400, 50, 30, black)
        pygame.display.flip()
        game.clock.tick(fps)
 
main()
定义的一些常量：桌面背景、音乐等等。
 
fps = 60
gravity = 0.15
pi = 3.142
 
white = (255, 255, 255)
black = (0, 0, 0)
red = (200, 0, 0)
bright_red = (255, 0, 0)
green = (0, 200, 0)
bright_green = (0, 255, 0)
sky_blue = (0, 255, 255)
blue = (0, 0, 255)
green_yellow=(181,255,98)
brown=(204,102,0)
dark_brown=(204,76,0)
 
highscore_file="highscore.txt"
arrow_image = "assets/arrow_1.png"
background_image = "assets/background.png"
 
explosion_sound = "assets/boom.wav"
click_sound = "assets/select.wav"
music_file = "assets/tgfcoder-frozenjam-seamlessloop.ogg"
volume = 0.2
 
arrow_size = (16, 150)
baloon_size = (100, 100)
hit_radius = 15
misses = 15
game_time = 60
定义游戏精灵类等：
 
import pygame
import math
import random
from os import path
from constants import *
 
#游戏精灵类
class arrow(pygame.sprite.sprite):
    def __init__(self,game):
        pygame.sprite.sprite.__init__(self)
        self.width = game.width
        self.height = game.height
        self.image_orig = pygame.transform.scale(game.arrow_img, arrow_size)
        self.image_orig.set_colorkey(black)
        self.image = self.image_orig
        self.rect = self.image.get_rect()
        self.rect.centerx = self.width/2
        self.rect.bottom = self.height-100
        self.rot = 0
        self.speedx = 0
        self.speedy = 0
        self.range = 0
        self.max_height = 0
        self.release_angle = 0
        self.set_vel = false
        self.released = false
        self.releasex = self.rect.centerx
        self.releasey = self.rect.bottom
        self.cy = self.rect.centery
        self.game = game
 
    def update(self):
        if self.released:
            self.speedy -= gravity
            self.rect.bottom -= self.speedy
            self.rect.centerx += self.speedx
            self.rot = (-math.atan2(self.speedx, self.speedy)*180/3.14) % 360
            new_image = pygame.transform.rotate(self.image_orig, self.rot)
 
            old_center = self.rect.center
            self.image = new_image
            self.rect = self.image.get_rect()
            self.rect.center = old_center
            # print "moving"
            if self.rect.bottom < 0 or self.rect.left > self.width + 10 or self.rect.right < -10:
                self.kill()
            
        else:
            mouse = pygame.mouse.get_pos()
            click = pygame.mouse.get_pressed()
            if mouse[1] > self.rect.centery and click[0] == 1:
                self.set_vel = true
                dist = math.sqrt(
                    math.pow(self.rect.centerx-mouse[0], 2)+math.pow(self.rect.bottom-mouse[1], 2))
                # print dist
 
                self.rect.centerx = mouse[0]
                self.rect.centery = mouse[1]
                # print(2*gravity*(self.rect.centery-mouse[1]))
                self.speedy = math.sqrt(2*gravity*(-self.cy+mouse[1]))*4
                self.speedx = self.speedy * \
                    (mouse[0]-self.releasex)/(self.cy-mouse[1])
                self.rot = (-math.atan2(self.speedx, self.speedy)
                            * 180/3.14*0.5) % 360
                new_image = pygame.transform.rotate(self.image_orig, self.rot)
                old_center = self.rect.center
                self.image = new_image
                self.rect = self.image.get_rect()
                self.rect.center = old_center
 
                # print "setting velocity"
 
            else:
                if self.set_vel:
                    self.released = true
                    self.game.last_arrow_time = pygame.time.get_ticks()
                    self.max_height = (self.rect.bottom-mouse[1])
                    self.range = (mouse[0]-self.rect.centerx)*2
                    # print "releasing"
                # math.sqrt(math.pow(mouse[0]-self.rect.centerx,2)+math.pow(mouse[1]-self.rect.centery,2)) < 200:
                else:
                    if (mouse[0]-self.rect.centerx) != 0:
                        theta = math.atan(
                            (mouse[1]-self.rect.bottom)/(self.rect.centerx-mouse[0]))
                    else:
                        theta = pi
                    move = theta-self.rot
                    self.rot = math.degrees(theta)
                    new_image = pygame.transform.rotate(
                        self.image_orig, self.rot)
                    old_center = self.rect.center
                    self.image = new_image
                    self.rect = self.image.get_rect()
                    self.rect.center = old_center
                    # print "rotating"
                    # print self.rot
                    # print theta
 
 
class baloon(pygame.sprite.sprite):
    def __init__(self,game):
        pygame.sprite.sprite.__init__(self)
        self.width = game.width
        self.height = game.height
        bcolor = random.choice(game.baloon_color)
        temp = "assets/balloon_{}.png".format(bcolor)
        self.image_orig = pygame.image.load(
            path.join(path.dirname(__file__), temp))
        if bcolor == "blue":
            self.image_orig.set_colorkey(blue)
        elif bcolor == "black":
            self.image_orig.set_colorkey(black)
        elif bcolor == "green":
            self.image_orig.set_colorkey(bright_green)
        elif bcolor == "red":
            self.image_orig.set_colorkey(bright_red)
 
        self.image_orig = pygame.transform.scale(self.image_orig, baloon_size)
        self.image = self.image_orig.copy()
        self.rect = self.image.get_rect()
        self.radius = hit_radius
 
        temp = random.randrange(self.width - self.rect.width)
        while (-150 < temp-self.width/2 < 150):
            temp = random.randrange(self.width - self.rect.width)
        self.rect.x = temp
        self.rect.y = random.randrange(self.height+100, self.height+150)
        self.speedy = random.randrange(-4, -1)
        self.speedx = random.randrange(-3, 3)
        self.game = game
        self.last_update = pygame.time.get_ticks()
        # print "baloon"
 
    def update(self):
        self.rect.y += self.speedy
        if self.rect.top < -20 or self.rect.left < -25 or self.rect.right > self.width + 20:
            self.kill()
            self.game.misses += 1
​

三、效果展示

游戏规则的话：箭会出现在游戏界面底部中间位置，拉动它：即是鼠标左键拉动方向可自己调整，

直接向下拉动然后放箭射中气球即可。射中的越多积累的分数越高哦！

1）截图展示效果——

游戏开始界面如下：

游戏开始界面如下：

扎中气球效果如下：

游戏结束总成绩13分:

2）视频展示效果——

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