[python] 小游戏 - play_plane

发布时间：2020-07-16 00:20:18 所属栏目：Python 来源：互联网

导读：GitHub：https://github.com/liqingwen2015/play_plane目前只做了第一部分：一个界面，有个飞机，可以左右移动，放子弹。暂无计划做第二部分。alien_invasion.pyimport sysimport pygamefrom settings import Settingsfrom ship import Shipimport game_funct

　　GitHub：

　　目前只做了第一部分：一个界面，有个飞机，可以左右移动，放子弹。

　　暂无计划做第二部分。

　　alien_invasion.py

import pygame

from settings import Settings
from ship import Ship
import game_functions as gf
from pygame.sprite import Group

def run_game():
# 初始化游戏并创建一个屏幕对象
 pygame.init()
ai_settings = Settings()
screen = pygame.display.set_mode((ai_settings.screen_width,ai_settings.screnn_height))
pygame.display.set_caption('Alien Invasion')

</span><span style="color: #008000;"&gt;#</span><span style="color: #008000;"&gt; 创建一艘飞船</span>
ship =<span style="color: #000000;"&gt; Ship(ai_settings,screen)
</span><span style="color: #008000;"&gt;#</span><span style="color: #008000;"&gt; 创建一个存储的子弹组</span>
bullets =<span style="color: #000000;"&gt; Group()

</span><span style="color: #008000;"&gt;#</span><span style="color: #008000;"&gt; 设置背景色</span>
bg_color = (230,230,230<span style="color: #000000;"&gt;)

</span><span style="color: #008000;"&gt;#</span><span style="color: #008000;"&gt; 开始游戏的主循环</span>
<span style="color: #0000ff;"&gt;while</span><span style="color: #000000;"&gt; True:
    gf.check_events(ai_settings,screen,ship,bullets)
    ship.update()
    gf.update_bullets(bullets)
    gf.update_screen(ai_settings,bullets)

run_game()

　　bullet.py

from pygame.sprite import Sprite

class Bullet(Sprite):

</span><span style="color: #0000ff;"&gt;def</span> <span style="color: #800080;"&gt;__init__</span><span style="color: #000000;"&gt;(self,ai_settings,ship):
    super(Bullet,self).</span><span style="color: #800080;"&gt;__init__</span><span style="color: #000000;"&gt;()
    self.screen </span>=<span style="color: #000000;"&gt; screen

    self.rect </span>=<span style="color: #000000;"&gt; pygame.Rect(0,ai_settings.bullet_width,ai_settings.bullet_height)
    self.rect.centerx </span>=<span style="color: #000000;"&gt; ship.rect.centerx
    self.rect.top </span>=<span style="color: #000000;"&gt; ship.rect.top

    </span><span style="color: #008000;"&gt;#</span><span style="color: #008000;"&gt; 存储用小数表示的子弹位置</span>
    self.y =<span style="color: #000000;"&gt; float(self.rect.y)

    self.color </span>=<span style="color: #000000;"&gt; ai_settings.bullet_color
    self.speed_factor </span>=<span style="color: #000000;"&gt; ai_settings.bullet_speed_factor

</span><span style="color: #0000ff;"&gt;def</span><span style="color: #000000;"&gt; update(self):
    self.y </span>-=<span style="color: #000000;"&gt; self.speed_factor
    </span><span style="color: #008000;"&gt;#</span><span style="color: #008000;"&gt; 更新子弹位置</span>
    self.rect.y =<span style="color: #000000;"&gt; self.y

</span><span style="color: #0000ff;"&gt;def</span><span style="color: #000000;"&gt; draw_bullet(self):
    pygame.draw.rect(self.screen,self.color,self.rect)</span></pre>

　　game_functions

import pygame

from bullet import Bullet

def check_events(ai_settings,bullets):
# 监听键盘和鼠标的事件
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
elif event.type == pygame.KEYDOWN:
check_keydown_events(event,bullets)
elif event.type == pygame.KEYUP:
check_keyup_events(event,ship)

def update_screen(ai_settings,bullets):
# 每次循环时都重绘屏幕
 screen.fill(ai_settings.bg_color)

</span><span style="color: #008000;"&gt;#</span><span style="color: #008000;"&gt; 在飞船和外星人后面重绘所有子弹</span>
<span style="color: #0000ff;"&gt;for</span> bullet <span style="color: #0000ff;"&gt;in</span><span style="color: #000000;"&gt; bullets.sprites():
    bullet.draw_bullet()

ship.blitme()

</span><span style="color: #008000;"&gt;#</span><span style="color: #008000;"&gt; 让最近绘制的屏幕可见</span>

pygame.display.flip()

def check_keydown_events(event,bullets):
if event.key == pygame.K_RIGHT:
ship.moving_right = True
elif event.key == pygame.K_LEFT:
ship.moving_left = True
elif event.key == pygame.K_SPACE:
# 创建一颗子弹，并将其加入到编组 bullets 中
 fire_bullet(ai_settings,bullets)

def check_keyup_events(event,ship):
if event.key == pygame.K_RIGHT:
ship.moving_right = False
elif event.key == pygame.K_LEFT:
ship.moving_left = False

def update_bullets(bullets):
bullets.update()

</span><span style="color: #008000;"&gt;#</span><span style="color: #008000;"&gt; 删除已经消失的子弹</span>
<span style="color: #0000ff;"&gt;for</span> bullet <span style="color: #0000ff;"&gt;in</span><span style="color: #000000;"&gt; bullets.copy():
    </span><span style="color: #0000ff;"&gt;if</span> bullet.rect.bottom <=<span style="color: #000000;"&gt; 0:
        bullets.remove(bullet)

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