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game_functions.py
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game_functions.py
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# -*- coding: utf-8 -*-
# @ Date : 2019/5/20 13:14
# @ Author : RichardLau_Cx
# @ file : Richard.py
# @ IDE : Pycharm
import sys
from time import sleep
import pygame
from bullet import Bullet
from thano import Thano
def check_keydown_events(event, first_settings, screen, ship, bullets): # 响应按键
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_RIGHT: # 向右移动钢铁侠
ship.moving_right = True
elif event.key == pygame.K_LEFT:
ship.moving_left = True
elif event.key == pygame.K_SPACE: # 创建一颗子弹并且将其加入到编组bullets中
fire_bullet(first_settings, screen, ship, bullets)
elif event.key == pygame.K_q:
sys.exit()
'''if len(bullets) < first_settings.bullets_allowed:
new_bullet = Bullet(first_settings,screen,ship)
bullets.add(new_bullet)'''
def fire_bullet(first_settings, screen, ship, bullets): # 如果未达到极限就发射一个子弹
if len(bullets) < first_settings.bullets_allowed: # 创建新子弹、并将其加入到编组bullets中
new_bullet = Bullet(first_settings, screen, ship)
bullets.add(new_bullet)
def check_keyup_events(event, ship): # 响应松开
if event.type == pygame.KEYUP:
if event.key == pygame.K_RIGHT:
ship.moving_right = False
elif event.key == pygame.K_LEFT:
ship.moving_left = False
def check_events(first_settings, screen, stats, sb, play_button, ship, thanos, bullets): # 相应按键和鼠标事件
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
elif event.type == pygame.KEYDOWN:
check_keydown_events(event, first_settings, screen, ship, bullets)
elif event.type == pygame.KEYUP:
check_keyup_events(event, ship)
elif event.type == pygame.MOUSEBUTTONDOWN:
mouse_x, mouse_y = pygame.mouse.get_pos()
check_play_button(first_settings, screen, stats, sb, play_button, ship, thanos, bullets, mouse_x, mouse_y)
def check_play_button(first_settings, screen, stats, sb, play_button, ship, thanos, bullets, mouse_x, mouse_y): # 在玩家点击Play按钮时，开始游戏
if play_button.rect.collidepoint(mouse_x, mouse_y):
button_cliked = play_button.rect.collidepoint(mouse_x, mouse_y)
if button_cliked and not stats.game_active:
first_settings.initialize_dynamic_settings() # 重置游戏设置
pygame.mouse.set_visible(False) # 隐藏光标
stats.reset_stats() # 重置游戏统计信息
stats.game_active = True
thanos.empty()
bullets.empty()
sb.prep_score() # 重置记分牌图像
sb.prep_high_score()
sb.prep_level()
sb.prep_ships()
create_fleet(first_settings, screen, ship, thanos) # 创建一群新的灭霸飞船，并将其居中
ship.center_ship()
def update_screen(first_settings, screen, stats, sb, ship, thanos, bullets, play_button): # 更新屏幕什么的图像，同时切换到新的屏幕
screen.fill(first_settings.bg_color) # 每次循环都重新绘制屏幕
for bullet in bullets.sprites():
bullet.draw_bullet()
ship.blitme()
thanos.draw(screen)
# thano.blitme()
sb.show_score()
if not stats.game_active: # 如果为非活动状态，就绘制Play按钮
play_button.draw_button()
pygame.display.flip() # 让最近绘制的屏幕可见
def update_bullets(first_settings, screen, stats, sb, ship, thanos, bullets): # 更新子弹的位置，并且删除已经消失的子弹
bullets.update() # 更新子弹的位置
for bullet in bullets.copy(): # 删除已经消失的子弹
if bullet.rect.bottom <= 0:
bullets.remove(bullet)
check_bullets_thano_collisions(first_settings, screen, stats, sb, ship, thanos, bullets)
def check_bullets_thano_collisions(first_settings, screen, stats, sb, ship, thanos, bullets):
collisions = pygame.sprite.groupcollide(bullets, thanos, True, True)
if collisions:
for thanos in collisions.values():
stats.score += first_settings.thano_points * len(thanos)
sb.prep_score()
check_high_score(stats, sb)
if(len(thanos)) == 0: # 删除现有子弹,加快速度，并且重新创建一波灭霸飞船,同时提升一个等级
bullets.empty()
first_settings.increase_speed()
stats.level += 1
sb.prep_level()
create_fleet(first_settings, screen, ship, thanos)
def update_thanos(first_settings, screen, stats,sb, ship, thanos, bullets): # 更新所有外星人的位置
check_fleet_edges(first_settings, thanos)
thanos.update()
if pygame.sprite.spritecollideany(ship, thanos):
ship_hit(first_settings, screen, stats, sb, ship, thanos, bullets)
print("Iron man crashes!")
check_thanos_bottom(first_settings, screen, stats, sb, ship, thanos, bullets) # 检查灭霸是否到达
def create_fleet(first_settings, screen, ship, thanos): # 创建外星人群
thano = Thano(first_settings, screen)
number_thanos_x = get_number_thanos_x(first_settings, thano.rect.width) # ---------------检查此函数的bug
number_rows = get_number_rows(first_settings, ship.rect.height, thano.rect.height)
for row_number in range(number_rows):
for thano_number in range(number_thanos_x):
create_thano(first_settings, screen, thanos, thano_number, row_number)
def get_number_thanos_x(first_settings, thano_width): # 计算每行可以容纳多少泰坦飞船，间距为泰坦飞船宽度
available_space_x = first_settings.screen_width - 2 * thano_width
number_thanos_x = int(available_space_x / (2 * thano_width))
return number_thanos_x
def create_thano(first_settings, screen, thanos, thano_number, row_number): # 创建一个泰坦飞船并且将其加入当前行
thano = Thano(first_settings, screen)
thano_width = thano.rect.width
thano.x = thano_width + 2 * thano_width * thano_number
thano.rect.x = thano.x
thano.rect.y = thano.rect.height + 2 * thano.rect.height * row_number
thanos.add(thano)
def get_number_rows(first_settings, ship_height, thano_height):
available_space_y = (first_settings.screen_height - (3 * thano_height - ship_height))
number_rows = int(available_space_y / (2 * thano_height))
return number_rows
def check_fleet_edges(first_settings, thanos): # 外星人到达边缘以后采取的措施
for thano in thanos.sprites():
if thano.check_edges():
change_fleet_direction(first_settings, thanos)
break
def change_fleet_direction(first_settings, thanos):
for thano in thanos.sprites():
thano.rect.y += first_settings.fleet_drop_speed # 将整群泰坦飞船向下移，并且改变它们移动的方向
first_settings.fleet_direction *= -1
def ship_hit(first_setting, screen, stats, sb, ship, thanos, bullets): # 相应被外星人撞击的钢铁侠
if stats.ships_left > 0:
stats.ships_left -= 1 # 将数值减一
sb.prep_ships() # 更新记分牌
thanos.empty() # 清空灭霸飞船和发射的激光炮
bullets.empty()
create_fleet(first_setting, screen, ship, thanos)
ship.center_ship()
sleep(0.5) # 暂停0.5秒
else:
stats.game_active = False
pygame.mouse.set_visible(True)
def check_thanos_bottom(first_settings, screen, stats, sb, ship, thanos, bullets): # 检查灭霸飞船是否已经登陆我方
screen_rect = screen.get_rect()
for thano in thanos.sprites():
if thano.rect.bottom >= screen_rect.bottom: # 碰撞处理
ship_hit(first_settings, screen, stats, sb, ship, thanos, bullets)
break
def check_high_score(stats, sb): # 检查是否诞生了新的最高分
if stats.score > stats.high_score:
stats.high_score = stats.score
sb.prep_high_score()