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[学习内容]外星人入侵项目实践
 1. 创建外星人类 2. 创建多个外星人并初始化位置 未完成： 3. 打印刷新外星人 90%
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5 files changed

Lines changed: 210 additions & 29 deletions

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‎alien.py‎

Lines changed: 97 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,97 @@
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#coding: utf-8
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import pygame
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from pygame.sprite import Sprite
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class Alien(Sprite):
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"""表示单个外星人的类"""
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def __init__(self, screen):
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"""初始化外星人"""
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super(Alien, self).__init__()
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self.__screen = screen
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self.__image = 'alien.png'
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# 加载外星人图像
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self.__image = pygame.image.load('alien.png')
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self.__rect = self.__image.get_rect()
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# 每个外星人最初都在屏幕左上角附近
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self.__rect.x = self.__rect.width
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self.__rect.y = self.__rect.height
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self.__center = self.__rect.centerx
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# 存储外星人准确的位置
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self.__x = float(self.__rect.x)
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self.__y = float(self.__rect.y)
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self.__speed = 1
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self.__min_distance_alien = 50
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self.__min_distance_wall = 40
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self.__current_distance_alien_left = 0
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self.__current_distance_alien_right = 0
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self.__current_distance_wall_left = 0
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self.__current_distance_wall_right = 0
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self.__current_distance_bottom = 0
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self.__current_distance_top = 0
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def blitme(self):
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"""在指定的位置绘制外星人"""
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self.__screen.blit(self.__image, self.__rect)
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def update(self):
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"""重写更新函数,根据移动规则改变外星人位置"""
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self.__y += self.__speed
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# self.__x += self.__speed
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self.__rect.y = self.__y
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# self.__rect.x = self.__x
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self.__center = self.__rect.centerx
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def moving(self):
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"""移动外星人"""
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def stop(self):
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"""停止外星人"""
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def set_move_speed(self, speed):
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"""设置移动速度"""
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self.__speed = speed
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def get_scrren(self):
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return self.__screen
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def set_rect(self, rect):
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self.__rect = rect
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return True
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def get_rect(self):
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return self.__rect
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def set_width(self, width):
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self.__rect.x = width
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return True
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def get_width(self):
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return self.__rect.x
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def set_height(self, height):
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self.__rect.y = height
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return True
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def get_height(self):
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return self.__rect.y
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def get_self_center(self):
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return self.__center
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def get_distance_alien(self):
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return self.__distance_alien
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def get_distance_wall(self):
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return self.__distance_wall
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‎alien_invasion.py‎

Lines changed: 23 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -1,13 +1,14 @@
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#coding: utf-8
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33

4-
import sys
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# import sys
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import pygame
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from settings import Settings
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from ship import Ship
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# from alien import Alien
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import game_functions as gf
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from pygame.sprite import Group
10-
import bullet as Bullte
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# import bullet as Bullte
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def run_game():
@@ -18,18 +19,33 @@ def run_game():
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scrren = pygame.display.set_mode((ai_settings.scrren_width, ai_settings.scrren_height))
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pygame.display.set_caption("Alien Invasion")
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21-
# 创建一艘飞船
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# 创建一艘飞船
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ship = Ship(scrren)
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ai_settings.set_ship_default(ship)
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# 创建外星人
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aliens = Group()
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alien_num = ai_settings.cal_alien_num_line_default(scrren)
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print alien_num
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gf.creat_fleet_alien(scrren, aliens, alien_num)
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ai_settings.set_alien_info_default(aliens, alien_num)
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# 开始游戏的主循环
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while True:
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# 监视键盘和鼠标事件
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# 0.监视键盘和鼠标事件
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gf.check_event(ship)
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30-
# 每次循环时都重绘屏幕
31-
# bullets.update()
32-
gf.redraw_scrren(ai_settings, scrren, ship)
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# 1.更新飞船数据
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ship.update()
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# 2.更新外星人数据
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aliens.update()
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# 3.重绘屏幕
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gf.redraw_scrren(ai_settings.bg_color, scrren, ship, aliens)
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3551
print run_game.__doc__

‎game_functions.py‎

Lines changed: 30 additions & 12 deletions
Original file line numberDiff line numberDiff line change
@@ -4,6 +4,7 @@
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import pygame
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import bullet as BULLET
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from bullet import *
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from alien import *
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def check_keyup_event(event, ship):
@@ -38,32 +39,49 @@ def check_event(ship):
3839
check_keyup_event(event, ship)
3940

4041

42+
def redraw_ship(ship):
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# 重绘飞船
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ship.blitme()
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4147
def redraw_bullet(bullets):
42-
bullets.update()
4348
# 在飞船和外星人后面重绘所有子弹
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bullets.update()
4450
for bullet in bullets.copy():
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BULLET.delete_bullte(bullet, bullets)
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4753
for bullet in bullets.sprites():
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bullet.draw_bullet()
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# print len(bullets)
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def redraw_alien(scrren, aliens):
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aliens.update()
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# aliens_num = len(aliens)
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# aliens.draw(scrren)
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50-
print len(bullets)
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52-
def redraw_scrren(ai_settings, scrren, ship):
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def redraw_scrren(bg_color, scrren, ship, aliens):
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"""更新屏幕上的图像"""
54-
# 每次循环时都重绘屏幕
55-
scrren.fill(ai_settings.bg_color)
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# 1.重刷背景
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scrren.fill(bg_color)
5668

57-
bullets = ship.get_bullets()
58-
redraw_bullet(bullets)
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# 2.重绘飞船
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redraw_ship(ship)
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60-
ship.blitme()
61-
# 让最近绘图的屏幕可见
62-
pygame.display.flip()
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ship.update()
64-
bullets.update()
72+
# 3.重绘子弹
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redraw_bullet(ship.get_bullets())
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75+
# 4.重绘外星人
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redraw_alien(scrren, aliens)
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78+
# 让最近绘图的屏幕可见
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pygame.display.flip()
6780

6881

82+
def creat_fleet_alien(screen, aliens, aliens_num):
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"""创建一群外星人"""
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for alien in range(aliens_num):
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alien = Alien(screen)
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aliens.add(alien)
6987

‎settings.py‎

Lines changed: 48 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -24,20 +24,63 @@ def __init__(self):
2424
self.bullet_height = 10
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self.bullet_color = 0, 0, 0
2626

27+
# 外星人设置
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self.alien_speed = 1
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self.alien_max_num = 10
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#
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self.alien_min_distance_alien = 50
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self.alien_min_distance_wall = 40
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self.alien_min_distance_bottom = 30
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self.alien_min_distance_top = 60
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2736
def set_ship(self, ship, speed, bullet):
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"""设置飞船属性"""
2838
ship.set_move_speed(speed)
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ship.set_bullet_allowed(bullet)
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return True
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3142
def set_ship_default(self, ship):
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"""设置默认飞船属性"""
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ship.set_move_speed(self.ship_speed)
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ship.set_bullet_allowed(self.ship_bullet_allowed)
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ship.set_bullets(self.bullet_width, self.bullet_height, self.bullet_color, self.bullet_speed)
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return True
3548

3649
def set_bullet_info(self, bullet, width, height, speed, color):
37-
bullet.setting_info(width, height, speed, color)
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"""设置子弹属性"""
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return bullet.setting_info(width, height, speed, color)
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3953
def set_bullet_info_defalut(self, bullet):
40-
bullet.set_info(self.bullet_width,
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self.bullet_height,
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self.bullet_speed,
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self.bullet_color)
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"""设置子弹默认属性"""
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return bullet.set_info(self.bullet_width,
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self.bullet_height,
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self.bullet_speed,
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self.bullet_color)
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def cal_alien_num_line(self, alien_distance_alien, alien_distance_wall, scrren):
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"""计算一行可以放置多少个外星人"""
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# 屏幕宽度 = （外星人数 - 1）* 外星人间距 + 2 * 外星人到墙距离
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scrren_rect = scrren.get_rect()
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alien_num = int(scrren_rect.width - 2 * alien_distance_wall) / alien_distance_alien + 1
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return alien_num
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def cal_alien_num_line_default(self, scrren):
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"""计算一行可以放置多少外星人"""
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scrren_rect = scrren.get_rect()
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return int((scrren_rect.width - 2 * self.alien_min_distance_wall) / self.alien_min_distance_alien + 1)
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72+
def set_alien_info_default(self, aliens, alien_num):
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"""设置外星人属性"""
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num = 1
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for alien in aliens:
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rect = alien.get_rect()
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alien_width = alien.get_width()
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alien_height = alien.get_height()
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rect.y = self.alien_min_distance_bottom
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rect.x = self.alien_min_distance_wall + (num - 1) * (alien_width + self.alien_min_distance_alien)
82+
alien.set_rect(rect)
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num += 1
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print num
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print alien.get_rect()
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return True

‎ship.py‎

Lines changed: 12 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -9,16 +9,24 @@ class Ship():
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def __init__(self, scrren):
1010
"""初始化飞船并设置其初始位置"""
1111
self.__scrren = scrren
12-
self.__image = pygame.image.load('ship.png')
12+
# 通过配置文件加载图像
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# ship_file_object = open('ship_image_name.txt', 'r')
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# image_name =ship_file_object.readlines(0)
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# print type(image_name)
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# print image_name[0]
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# image_name_ex = image_name[0]
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# self.__image = pygame.image.load(image_name_ex)
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# ship_file_object.close()
20+
self.__image = pygame.image.load_extended('ship.png')
1321
self.__rect = self.__image.get_rect()
1422
self.__scrren_rect = scrren.get_rect()
1523

24+
1625
# 持续移动标志
1726
self.__moving_riht = False
1827
self.__moving_left = False
1928
self.__speed_factor = 1
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21-
2230
# 将每艘飞船防止在屏幕底部中央
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self.__rect.centerx = (self.__scrren_rect.right + self.__scrren_rect.left) / 2
2432
self.__rect.bottom = self.__scrren_rect.bottom
@@ -39,10 +47,10 @@ def blitme(self):
3947

4048
def update(self):
4149
"""根据移动标志调整飞船的位置"""
42-
if True == self.__moving_riht and self.__rect.right < self.__scrren_rect.right:
50+
if (True is self.__moving_riht) and self.__rect.right < self.__scrren_rect.right:
4351
self.__self_center += self.__speed_factor
4452

45-
if True == self.__moving_left and self.__rect.left > self.__scrren_rect.left:
53+
if (True is self.__moving_left) and self.__rect.left > self.__scrren_rect.left:
4654
self.__self_center -= self.__speed_factor
4755

4856
self.__rect.centerx = self.__self_center
@@ -103,7 +111,6 @@ def set_bullets(self, width, height, color, speed):
103111
self.__bullet_color = color
104112
self.__bullet_speed = speed
105113

106-
107114
def fire_bullets(self):
108115
# 限定子弹数量
109116
if self.__bullet_allowed > len(self.__bullets):

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