基本的面向对象分析和设计

Author: 521xueweihan

ex43.py

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+#coding:utf-8
+#################
+# 习题43:基本的面向对象分析和设计
+#################
+# 前言
+# 
+# 如何把现实中的问题抽象出来，并提取共同点——写成父类
+# 注意考虑动词，转化为类的动作
+
+class Scene(object):
+    
+    def enter(self):
+        pass
+        
+
+class Engine(object):
+    
+    def __init__(self, scene_map):
+        pass
+        
+    def play(self):
+        pass
+        
+class Death(Scene):
+
+    def enter(self):
+        pass
+
+class CentralCorridor(Scene):
+    
+    def enter(self):
+        pass
+        
+class  LaserWeaponArmory(Scene):
+
+    def enter(self):
+        pass
+        
+class TheBridge(Scene):
+    
+    def enter(self):
+        pass
+     
+class EscapePod(Scene):
+
+    def enter(self):
+        pass
+        
+
+class Map(object):
+    
+    def __init__(self, start_scene):
+        pass
+        
+    def next_scene(self, scene_name):
+        pass
+        
+    def opening_scene(self):
+        pass
+        
+        
+a_map = Map('central_corridor')
+a_game = Engine(a_map)
+a_game.play()