Unity使用多态制作计算器功能

本文实例为大家分享了unity使用多态制作计算器，供大家参考，具体内容如下

unity中需要的组件

在unity中创建两个inputfield，一个dropdown，一个button和一个text

创建脚本文件

计算父类

using system.collections;
using system.collections.generic;
using unityengine;

public class jsq : monobehaviour
{
    public abstract class calculate
    {
        public float number1
        {
            get;
            set;
        }
        public float number2
        {
            get;
            set;
        }
        public abstract float compute();
    }
}

加法

using system.collections;
using system.collections.generic;
using unityengine;

public class addition : jsq.calculate
{
    /// <summary>
    /// 实现父类计算方法
    /// </summary>
    /// <returns>加法计算结果</returns>
    public override float compute()
    {
        return number1 + number2;
    }
}

减法

using system.collections;
using system.collections.generic;
using unityengine;

public class subtraction : jsq.calculate
{
    /// <summary>
    /// 实现父类计算方法
    /// </summary>
    /// <returns>减法计算结果</returns>
    public override float compute()
    {
        return number1 - number2;
    }
}

乘法

using system.collections;
using system.collections.generic;
using unityengine;

public class multiplication : jsq.calculate
{
    public override float compute()
    {
        return number1 * number2;
    }
}

除法

using system.collections;
using system.collections.generic;
using unityengine;

public class newbehaviourscript : jsq.calculate
{
    public override float compute()
    {
        return number1 / number2;
    }
}

等于号按钮

using system.collections;
using system.collections.generic;
using unityengine;
using unityengine.ui;
using system;

public class equalbtn : jsq
{
    public text txt_number1;
    public text txt_number2;
    public text cbb_operator;
    public text lab_result;

    public void btn_click()
    {
        //获取两个参数
        float number1 = convert.tosingle(txt_number1.text.trim());
        float number2 = convert.tosingle(txt_number2.text.trim());
        //获取运算符
        string operation = cbb_operator.text.trim();
        //通过运算符，返回父类类型
        calculate calculate = getcalculateresult(operation);
        calculate.number1 = number1;
        calculate.number2 = number2;
        //利用多态返回运算结果
        string result = calculate.compute().tostring();
       this.lab_result.text = result;

    }

    private calculate getcalculateresult(string operation)
    {
        calculate calculate = null;
        switch (operation)
        {
            case "+":
                calculate = new addition();
                break;
            case "-":
                calculate = new subtraction();
                break;
            case "*":
                calculate = new multiplication();
                break;
            case "/":
                calculate = new division();
                break;
        }
        return calculate;
    }
}

将等于号按钮脚本赋给canvas组件

再将对应的组件拉进去：顺序分别是第一个inputfield里的text（注意都是text），第二个inputfield里的text，然后是dropdown里面的label，最后是显示结果的text

最后在给等于号按钮添加一个执行函数

最后在运行unity，加减乘除都可以计算，大功告成！

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。