修飾模式（Decorator結構型）C#簡單例子
玩家基本功能是移動、運行等等。BaseAbility
新增加功能：1、傷害技能harmAbility；2、阻礙技能BaulkAbility；3、輔助技能assistAbility
玩家1增加傷害技能 Decorator harm = new HarmAbility(baseAbility);
玩家2增加傷害技能、阻礙技能 Decorator baulk = new BaulkAbility(harm);
玩家3增加傷害技能、阻礙技能和輔助技能 Decorator assist = new AssistAbility(baulk);
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namespace adapterpattern
{
public partial class DecoratorForm : Form
{
public DecoratorForm()
{
InitializeComponent();
}
private void btnDisplay_Click(object sender, EventArgs e)
{
BaseAbility baseAbility = new BaseOperation();
baseAbility.Run();
listBox1.Items.Add(baseData.baseString);
baseData.baseString = "";
listBox1.Items.Add("***********玩家1新功能：傷害**************");
Decorator harm = new HarmAbility(baseAbility);
harm.Run();
listBox1.Items.Add(baseData.baseString);
baseData.baseString = "";
listBox1.Items.Add("***********玩家2新功能：傷害和阻礙**************");
Decorator baulk = new BaulkAbility(harm);
baulk.Run();
listBox1.Items.Add(baseData.baseString);
baseData.baseString = "";
listBox1.Items.Add("***********玩家3新功能：傷害、阻礙、輔助**************");
Decorator assist = new AssistAbility(baulk);
assist.Run();
listBox1.Items.Add(baseData.baseString);
}
}
public abstract class BaseAbility //抽象的基礎功能
{
public abstract void Run();
}
public class BaseOperation : BaseAbility//實體基礎功能
{
public override void Run()
{
baseData.baseString += "---移動---";
baseData.baseString += "----運行----";
}
}
public abstract class Decorator : BaseAbility//接口繼承
{
private BaseAbility baseAbility;//Has—A對象組合
public Decorator(BaseAbility baseAbility)//裝飾連接點
{
this.baseAbility = baseAbility;
}
public override void Run()
{
baseAbility.Run();
}
}
public class baseData//數據中轉站
{
public static string baseString { get; set; }
}
public class HarmAbility : Decorator//增加傷害技能
{
public HarmAbility(BaseAbility baseAbility)
: base(baseAbility)
{ }
public override void Run()//增加傷害
{
// base.Move();
base.Run();
baseData.baseString += "-----傷害-----";
}
}
public class BaulkAbility : Decorator//增加阻礙技能
{
public BaulkAbility(BaseAbility baseAbility)
: base(baseAbility)
{ }
public override void Run()//增加阻礙
{
// base.Move();
base.Run();
baseData.baseString += "-----阻礙-----";
}
}
public class AssistAbility : Decorator//增加輔助技能
{
public AssistAbility(BaseAbility baseAbility)
: base(baseAbility)
{ }
public override void Run()
{
base.Run();
baseData.baseString += "-----輔助-----";
}
}
}
