1。何為簡單工廠模式？就是把建立的過程封裝起來，客戶只關心需要什麼樣的產品，不關心整個產品建立的過程。我們來實現一個簡單的工廠模式。我們就拿客戶點餐為例，客戶想要什麼食品，他不關心食品是怎麼做的，食品的做法直接交給工廠即可。我們來建立一個食品的基類。並且建立2種食品。

using System;
using UnityEngine;

public abstract class Food
{
	public abstract void print();
}

public class TomatoScrambledEggs : Food
{
	public override void print()
	{
		Debug("我是:TomatoScrambledEggs");
	}
}

public class ShreddedPorkWithPotatoes : Food
{
	public override void print()
	{
		Debug("我是:ShreddedPorkWithPotatoes");
	}
}
 

using System;


/// <summary>
/// 簡單工廠模式
/// </summary>
public class FoodSimpleFactory
{
	static public Food createFood(string foodName)
	{
		Food food;
		if(foodName.Equals("TomatoScrambledEggs"))
		{
			food = new TomatoScrambledEggs ();
		}
		else if(foodName.Equals("ShreddedPorkWithPotatoes"))
		{
			food = new ShreddedPorkWithPotatoes ();
		}
		return food;
	}
}
 

using System;

public  class Customer
{
	public Customer ()
	{
		Food food1 = FoodSimpleFactory.createFood ("TomatoScrambledEggs");
		food1.print ();

		Food food2 = FoodSimpleFactory.createFood ("ShreddedPorkWithPotatoes");
		food1.print ();
	}
}