[学习内容]外星人入侵项目实践

MingMingWu · MingMingWu · commit a0108e528b3a · 2017-05-20T00:56:52.000+08:00
3. 打印刷新外星人 100%
diff --git a/alien.py b/alien.py
@@ -12,10 +12,9 @@ def __init__(self, screen):
         """初始化外星人"""
         super(Alien, self).__init__()
         self.__screen = screen
-        self.__image = 'alien.png'
 
         # 加载外星人图像
-        self.__image = pygame.image.load('alien.png')
+        self.__image = pygame.image.load_extended('alien.png')
         self.__rect = self.__image.get_rect()
 
         # 每个外星人最初都在屏幕左上角附近
@@ -43,7 +42,7 @@ def blitme(self):
 
     def update(self):
         """重写更新函数,根据移动规则改变外星人位置"""
-        self.__y += self.__speed
+        # self.__y += self.__speed
         # self.__x += self.__speed
         self.__rect.y = self.__y
         # self.__rect.x = self.__x
diff --git a/alien_invasion.py b/alien_invasion.py
@@ -25,13 +25,11 @@ def run_game():
 
     # 创建外星人
     aliens = Group()
+
     alien_num = ai_settings.cal_alien_num_line_default(scrren)
     print alien_num
     gf.creat_fleet_alien(scrren, aliens, alien_num)
-    ai_settings.set_alien_info_default(aliens, alien_num)
-
-
-
+    ai_settings.set_alien_info_default(aliens)
 
 #   开始游戏的主循环
     while True:
diff --git a/game_functions.py b/game_functions.py
@@ -55,10 +55,12 @@ def redraw_bullet(bullets):
     # print len(bullets)
 
 
-def redraw_alien(scrren, aliens):
-    aliens.update()
+def redraw_alien(aliens):
+    # aliens.update()
     # aliens_num = len(aliens)
     # aliens.draw(scrren)
+    for alien in aliens:
+        alien.blitme()
 
 
 def redraw_scrren(bg_color, scrren, ship, aliens):
@@ -73,7 +75,7 @@ def redraw_scrren(bg_color, scrren, ship, aliens):
     redraw_bullet(ship.get_bullets())
 
     # 4.重绘外星人
-    redraw_alien(scrren, aliens)
+    redraw_alien(aliens)
 
     # 让最近绘图的屏幕可见
     pygame.display.flip()
diff --git a/settings.py b/settings.py
@@ -28,8 +28,10 @@ def __init__(self):
         self.alien_speed = 1
         self.alien_max_num = 10
         #
-        self.alien_min_distance_alien = 50
-        self.alien_min_distance_wall = 40
+        self.alien_width = 60
+        self.alien_height = 60
+        self.alien_min_distance_alien = 20
+        self.alien_min_distance_wall = 10
         self.alien_min_distance_bottom = 30
         self.alien_min_distance_top = 60
 
@@ -57,30 +59,32 @@ def set_bullet_info_defalut(self, bullet):
                                self.bullet_speed,
                                self.bullet_color)
 
-    def cal_alien_num_line(self, alien_distance_alien, alien_distance_wall, scrren):
+    def cal_alien_num_line(self, alien_distance_alien, alien_distance_wall, alien_width, scrren):
         """计算一行可以放置多少个外星人"""
         # 屏幕宽度 = （外星人数 - 1）* 外星人间距 + 2 * 外星人到墙距离
         scrren_rect = scrren.get_rect()
-        alien_num = int(scrren_rect.width - 2 * alien_distance_wall) / alien_distance_alien + 1
+        alien_num = int((scrren_rect.width - 2 * alien_distance_wall + alien_distance_alien) \
+                    / (alien_distance_alien + alien_width))
         return alien_num
 
     def cal_alien_num_line_default(self, scrren):
         """计算一行可以放置多少外星人"""
         scrren_rect = scrren.get_rect()
-        return int((scrren_rect.width - 2 * self.alien_min_distance_wall) / self.alien_min_distance_alien + 1)
+        num = int((scrren_rect.width - 2 * self.alien_min_distance_wall + self.alien_width) \
+                  / (self.alien_min_distance_alien + self.alien_width))
+        return num
 
-    def set_alien_info_default(self, aliens, alien_num):
+    def set_alien_info_default(self, aliens):
         """设置外星人属性"""
         num = 1
         for alien in aliens:
 
             rect = alien.get_rect()
             alien_width = alien.get_width()
-            alien_height = alien.get_height()
+            # alien_height = alien.get_height()
             rect.y = self.alien_min_distance_bottom
             rect.x = self.alien_min_distance_wall + (num - 1) * (alien_width + self.alien_min_distance_alien)
             alien.set_rect(rect)
             num += 1
-            print num
-            print alien.get_rect()
+
         return True
diff --git a/ship.py b/ship.py
@@ -21,7 +21,6 @@ def __init__(self, scrren):
         self.__rect = self.__image.get_rect()
         self.__scrren_rect = scrren.get_rect()
 
-
         # 持续移动标志
         self.__moving_riht = False
         self.__moving_left = False
