某游戏公司现欲开发一款面向儿童的模拟游戏，该游戏主要模拟现实世界中各种鸭子的发声特征、飞行特征和外观特征。游戏需要模拟的鸭子种类及其特征。当前设计为有四类鸭子RubberDuck、MallardDuck、CottonDuck和RedHeadDuck。每类鸭子都为支持将来能够模拟更多种类鸭子的特征，采用策略模式实现模拟python

首先，我们需要定义一个鸭子基类Duck，其中包含鸭子的属性和方法，如下：

class Duck:
    def __init__(self):
        self.fly_behavior = None
        self.quack_behavior = None
        self.appearance = ""
    
    def set_fly_behavior(self, fb):
        self.fly_behavior = fb
        
    def set_quack_behavior(self, qb):
        self.quack_behavior = qb
        
    def fly(self):
        self.fly_behavior.fly()
        
    def quack(self):
        self.quack_behavior.quack()
        
    def display(self):
        print("I am a " + self.appearance + " duck.")

接下来，我们定义鸭子的飞行和叫声行为，作为策略模式的具体实现：

class FlyWithWings:
    def fly(self):
        print("I can fly with wings!")
        
class FlyNoWay:
    def fly(self):
        print("I can't fly!")
        
class Quack:
    def quack(self):
        print("Quack! Quack!")
        
class Squeak:
    def quack(self):
        print("Squeak! Squeak!")

然后，我们定义具体的鸭子类：

class RubberDuck(Duck):
    def __init__(self):
        super().__init__()
        self.set_fly_behavior(FlyNoWay())
        self.set_quack_behavior(Squeak())
        self.appearance = "rubber"
        
class MallardDuck(Duck):
    def __init__(self):
        super().__init__()
        self.set_fly_behavior(FlyWithWings())
        self.set_quack_behavior(Quack())
        self.appearance = "mallard"
        
class CottonDuck(Duck):
    def __init__(self):
        super().__init__()
        self.set_fly_behavior(FlyNoWay())
        self.set_quack_behavior(Squeak())
        self.appearance = "cotton"
        
class RedHeadDuck(Duck):
    def __init__(self):
        super().__init__()
        self.set_fly_behavior(FlyWithWings())
        self.set_quack_behavior(Quack())
        self.appearance = "red head"

最后，我们可以使用这些类来模拟鸭子的飞行、叫声和外观：

if __name__ == '__main__':
    rubber_duck = RubberDuck()
    rubber_duck.display()
    rubber_duck.quack()
    rubber_duck.fly()
    
    mallard_duck = MallardDuck()
    mallard_duck.display()
    mallard_duck.quack()
    mallard_duck.fly()
    
    cotton_duck = CottonDuck()
    cotton_duck.display()
    cotton_duck.quack()
    cotton_duck.fly()
    
    red_head_duck = RedHeadDuck()
    red_head_duck.display()
    red_head_duck.quack()
    red_head_duck.fly()

输出结果：

I am a rubber duck.
Squeak! Squeak!
I can't fly!
I am a mallard duck.
Quack! Quack!
I can fly with wings!
I am a cotton duck.
Squeak! Squeak!
I can't fly!
I am a red head duck.
Quack! Quack!
I can fly with wings!