Abstract Factory实例_abstract factory 实例-优快云博客

本文介绍了一种使用工厂模式创建不同类型游戏场景的方法。通过抽象出SceneFactory类来定义创建Road（道路）、House（房屋）和Role（角色）的接口，并通过具体实现如ClassicSceneFactory和ModernSceneFactory来创建经典风格或现代风格的游戏元素。GameManager类负责根据所选的工厂实例化具体的场景元素。

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public abstract class Road
{
}
public abstract class House
{
}
public abstract class Role
{
}

public class ClassicRoad : Road
{
}
public class ClassicHouse : House
{
}
public class ClassicRole : Role
{
}

public class ModernRoad : Road
{
}
public class ModernHouse : House
{
}
public class ModernRole : Role
{
}

public abstract class SceneFactory
{
    public abstract Road CreateRoad();
    public abstract House CreateHouse();
    public abstract Role CreateRole();
}
public class ClassicSceneFactory
{
    public Road CreateRoad()
    {
        return new ClassicRoad();
    }
    public House CreateHouse()
    {
        return new ClassicHouse();
    }
    public Role CreateRole()
    {
        return new ClassicRole();
    }
}
public class ModernSceneFactory
{
    public Road CreateRoad()
    {
        return new ModernRoad();
    }
    public House CreateHouse()
    {
        return new ModernHouse();
    }
    public Role CreateRole()
    {
        return new ModernRole();
    }
}

class GameManager
{
    private SceneFactory _factory = null;
    private Road _road = null;
    private House _house = null;
    private Role _role = null;
    public GameManager(SceneFactory factory)
    {
        this._factory = factory;
    }
    public void CreateScene()
    {
        _road = _factory.CreateRoad();
        _house = _factory.CreateHouse();
        _role = _factory.CreateRole();
    }
    public void Run()
    {
        _role.WalkAlone(_road);
        _role.Enter(_house);
        ...
    }