unity实现简单计算器

本文实例为大家分享了unity实现简单计算器的具体代码，供大家参考，具体内容如下

using system.text;
using unityengine;
using unityengine.ui;
using dg.tweening;
using system;

public class calculator : monobehaviour
{
    public text spendtext;
    private stringbuilder spendprice;//初始金额
    private string rmbsymbol;
    private float totalprice, spendprices;//总和,初始金额
    private bool isfirstdecrease;//避免减为零后的第二次起不能为负
    private bool? isplusordecrease, counttype;//点击加减符号，点击等号
    public button pointbutton; 
    private int count;//限制最大输入数
    private void start()
    {
        spendprice = new stringbuilder();
        totalprice = 0;
        spendprices = 0;
        rmbsymbol = "<size='50'>¥</size> ";
        isplusordecrease = null;//true为加，false为减
        counttype = null;//true为加，false为减
        isfirstdecrease = true;
        count = 0;
    }

    public void pointbuttoncontroller(bool type)
    {
        pointbutton.interactable = type;
    }

    public void inputnumber(int num)
    {
        //按钮
        switch (num)
        {
            case 0:
                if (count < 11)
                {
                    count++;
                    spendprice.append("0");
                    spendtext.dotext(rmbsymbol + spendprice.tostring(), 0.1f);
                }
                break;
            case 1:
                if (count < 11)
                {
                    count++;
                    spendprice.append("1");
                    spendtext.dotext(rmbsymbol + spendprice.tostring(), 0.1f);
                }
                break;
            case 2:
                if (count < 11)
                {
                    count++;
                    spendprice.append("2");
                    spendtext.dotext(rmbsymbol + spendprice.tostring(), 0.1f);
                }
                break;
            case 3:
                if (count < 11)
                {
                    count++;
                    spendprice.append("3");
                    spendtext.dotext(rmbsymbol + spendprice.tostring(), 0.1f);
                }
                break;
            case 4:
                if (count < 11)
                {
                    count++;
                    spendprice.append("4");
                    spendtext.dotext(rmbsymbol + spendprice.tostring(), 0.1f);
                }
                break;
            case 5:
                if (count < 11)
                {
                    count++;
                    spendprice.append("5");
                    spendtext.dotext(rmbsymbol + spendprice.tostring(), 0.1f);
                }
                break;
            case 6:
                if (count < 11)
                {
                    count++;
                    spendprice.append("6");
                    spendtext.dotext(rmbsymbol + spendprice.tostring(), 0.1f);
                }
                break;
            case 7:
                if (count < 11)
                {
                    count++;
                    spendprice.append("7");
                    spendtext.dotext(rmbsymbol + spendprice.tostring(), 0.1f);
                }
                break;
            case 8:
                if (count < 11)
                {
                    count++;
                    spendprice.append("8");
                    spendtext.dotext(rmbsymbol + spendprice.tostring(), 0.1f);
                }
                break;
            case 9:
                if (count < 11)
                {
                    count++;
                    spendprice.append("9");
                    spendtext.dotext(rmbsymbol + spendprice.tostring(), 0.1f);
                }
                break;
            case 10:
                if (count < 11)
                {
                    count += 2;
                    spendprice.append("00");
                    spendtext.dotext(rmbsymbol + spendprice.tostring(), 0.1f);
                }
                break;
            case 11://加
                isplusordecrease = true;
                counttype = true;
                count = 0;
                if (!spendprice.tostring().equals(""))
                {
                    if ((totalprice + float.parse(spendprice.tostring()) < 99999999999) && !totalprice.tostring().contains("e"))
                    {
                        
                        pointbuttoncontroller(true);
                        if (totalprice != 0)//避免第一次点击加号时没反应
                        {
                            totalcount();
                        }
                        countnum();
                    }
                    else
                    {
                        count = 0;
                        pointbuttoncontroller(true);
                        totalprice = 0;
                        spendprice.clear();
                        spendtext.dotext(rmbsymbol, 0);
                        isfirstdecrease = true;
                    }
                }
                break;
            case 12://减
                isplusordecrease = false;
                counttype = false;
                count = 0;
                if (!spendprice.tostring().equals(""))
                {
                    if ((totalprice + float.parse(spendprice.tostring()) < 99999999999) && !totalprice.tostring().contains("e"))
                    {
                        pointbuttoncontroller(true);
                        if (totalprice != 0)//避免第一次点击减号时没反应
                        {
                            totalcount();
                        }
                        countnum();
                    }
                    else
                    {
                        count = 0;
                        pointbuttoncontroller(true);
                        totalprice = 0;
                        spendprice.clear();
                        spendtext.dotext(rmbsymbol, 0);
                        isfirstdecrease = true;
                    }
                }
                break;
            case 13://点
                pointbuttoncontroller(false);
                spendprice.append(".");
                spendtext.dotext(rmbsymbol + spendprice.tostring(), 0.1f);
                break;
            case 14://等号
                count = 0;
                if (!spendprice.tostring().equals(""))
                {
                    if ((totalprice + float.parse(spendprice.tostring()) < 9999999999) && !totalprice.tostring().contains("e"))
                    {
                        pointbuttoncontroller(true);
                        totalcount();
                    }
                    else
                    {
                        count = 0;
                        pointbuttoncontroller(true);
                        totalprice = 0;
                        spendprice.clear();
                        spendtext.dotext(rmbsymbol, 0);
                        isfirstdecrease = true;
                    }
                }
                break;
            case 15://清零
                count = 0;
                pointbuttoncontroller(true);
                totalprice = 0;
                spendprice.clear();
                spendtext.dotext(rmbsymbol, 0);
                isfirstdecrease = true;
                break;
            default:
                break;
        }
    }
    public void countnum()
    {
        if (spendprice.tostring().startswith("0") || spendprice.tostring().equals(""))//去除开始的无效零
        {
            if (spendprice.tostring().trimstart('0') == "" || spendprice.tostring().trimstart('0').trimend('0') == ".")//0000，00.00，0.，.0
            {
                spendprices = 0;
            }
            else
            {
                spendprices = float.parse((float.parse(spendprice.tostring().trimstart('0'))).tostring("f2"));
            }
        }
        else
        {
            spendprices = float.parse((float.parse(spendprice.tostring())).tostring("f2"));
        }
        if (isplusordecrease == true && totalprice != 0 && spendprices != 0)
        {
            totalprice += spendprices;
            spendprice.clear();
            spendtext.dotext(rmbsymbol + totalprice.tostring(), 0.1f);
            isplusordecrease = null;
        }
        else if (isplusordecrease == true && totalprice == 0 && spendprices != 0 && spendprices != 0)
        {
            totalprice = spendprices;
            spendprice.clear();
        }
        
        if (isplusordecrease == false && totalprice == 0 && spendprices != 0 && isfirstdecrease)
        {
            totalprice = spendprices;
            spendprice.clear();
            isfirstdecrease = false;
        }
        else if (isplusordecrease == false && spendprices != 0)
        {
            totalprice -= spendprices;
            spendprice.clear();
            spendtext.dotext(rmbsymbol + totalprice.tostring(), 0.1f);
            isplusordecrease = null;
        }
    }

    public void totalcount()
    {
        if (spendprice.tostring().startswith("0") || spendprice.tostring().equals(""))
        {
            if (spendprice.tostring().trimstart('0') == "" || spendprice.tostring().trimstart('0').trimend('0') == ".")
            {
                spendprices = 0;
            }
            else
            {
                spendprices = float.parse((float.parse(spendprice.tostring().trimstart('0'))).tostring("f2"));
            }
        }
        else
        {
            spendprices = float.parse((float.parse(spendprice.tostring())).tostring("f2"));
        }
        if (spendprices != 0)
        {
            if (counttype == true)
            {
                totalprice += spendprices;
            }
            else if (counttype == false)
            {
                totalprice -= spendprices;
            }
            spendprice.clear();
            spendtext.dotext(rmbsymbol + totalprice.tostring(), 0.1f);
            counttype = null;
        }
    }
    //将科学计数法转化为普通数字
    private decimal changedatatod(string strdata)
    {
        decimal ddata = 0.0m;
        if (strdata.contains("e"))
        {
            ddata = decimal.parse(strdata, system.globalization.numberstyles.float);
        }
        return ddata;
    }
}

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。