Unity 设计模式之 简单工厂模式的实例介绍

1、打开Unity，新建一个空工程，具体如下图

https://exp-picture.cdn.bcebos.com/0d2fe5f202b375d7ca055240515872dadf49d8d6.jpg

2、在工程中，新建几个脚本，然后双击打开，具体如下图

https://exp-picture.cdn.bcebos.com/cd93a566515985407754ed56b5a23a42a17ac4d6.jpg

3、脚本的具体代码和代码内容如下图

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4、Operation 脚本具体内容如下：usingSystem.Collections;usingSystem.Collectio荏鱿胫协ns.Generic;usingUnityEngine;///<summary>///计算器操作运算符的基类///</summary>publicclassOperation{//参数 privatedouble_numberA=0; privatedouble_numberB=0;publicdoubleNumberA{ get{ return_numberA; } set{ _numberA=value; } } publicdoubleNumberB{ get{ return_numberB; } set{ _numberB=value; } }///<summary> ///Getstheresult,结果运算虚函数. ///</summary> ///<returns>Theresult.</returns> publicvirtualdoubleGetResult(){ doubleresult=0; returnresult; }}

5、OperationAdd脚本具体内容如下：usingSystem.Collections;usingSystem.Collections.Generic;usingUnityEngine;///<summary>///加法运算///</summary>publicclassOperationAdd:Operation{///<summary> ///Getstheresult,结果运算重载函数. ///</summary> ///<returns>Theresult.</returns> publicoverridedoubleGetResult(){doubleresult=0; result=NumberA+NumberB;returnresult; }}

6、OperationSub脚本具体内容如下：usingSystem.Collections;usingSystem.Collections.Generic;usingUnityEngine;///<summary>///减法运算.///</summary>publicclassOperationSub:Operation{///<summary> ///Getstheresult,结果运算重载函数. ///</summary> ///<returns>Theresult.</returns> publicoverridedoubleGetResult(){doubleresult=0; result=NumberA-NumberB;returnresult; }}

7、OperationMul脚本具体内容如下：usingSystem.Collections;usingSystem.Collections.Generic;usingUnityEngine;///<summary>///乘法运算///</summary>publicclassOperationMul:Operation{///<summary> ///Getstheresult,结果运算重载函数. ///</summary> ///<returns>Theresult.</returns> publicoverridedoubleGetResult(){doubleresult=0; result=NumberA*NumberB;returnresult; }}

8、OperationDiv脚本具体内容如下：usingSystem.Collections;usingSystem.Collections.Generic;usingUnityEngine;usingSystem;///<summary>///除法运算///</summary>publicclassOperationDiv:Operation{///<summary> ///Getstheresult,结果运算重载函数. ///</summary> ///<returns>Theresult.</returns> publicoverridedoubleGetResult(){doubleresult=0;if(NumberB==0) thrownewException("除数不能为0"); result=NumberA/NumberB;returnresult; }}

9、SimpleOperationFactory脚本具体内容如下：usingSystem.Collections;usingSystem.Collections.Gener足毂忍珩ic;usingUnityEngine;///<summary>///Simpleoperationfactory.///</summary>publicclassSimpleOperationFactory{///<summary> ///Createstheoperate. ///</summary> ///<returns>Theoperate.</returns> ///<paramname="operate">Operate.</param> publicstaticOperationCreateOperate(stringoperate){ Operationoper=null;switch(operate){ case"+": oper=newOperationAdd(); break;case"-": oper=newOperationSub(); break;case"*": oper=newOperationMul(); break;case"/": oper=newOperationDiv(); break; }returnoper; }}

10、Test脚本具体内容如下：usingSystem.Collections;usingSystem.Collections.Generic;usingUnityEngine;publicclassTest:MonoBehaviour{//Usethisforinitialization voidStart(){Operationoper=newOperation();oper=SimpleOperationFactory.CreateOperate("*"); oper.NumberA=2; oper.NumberB=6; doubleresult=oper.GetResult();Debug.Log("2*6="+result); } //Updateiscalledonceperframe voidUpdate(){ }}

11、脚本编译正确，回到Unity界面，在场景中新建一个 GameObject，并把 Test 脚本赋给 GameObject，具体如下图

https://exp-picture.cdn.bcebos.com/46a92de039723d036d94d732bb486143d6d457d7.jpg

12、运行场景，控制台 Console 打印如下图

https://exp-picture.cdn.bcebos.com/05aae8a75f0f822b9490f586c018512c8df14dd7.jpg

13、到此，《Unity 设计模式之 简单工厂模式的实例介绍》讲解结束，谢谢