126 lines
3.6 KiB
Plaintext
126 lines
3.6 KiB
Plaintext
/*
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文件名:Math.nut
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路径:Tool/Math.nut
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创建日期:2025-10-21 18:10
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文件用途:数学工具
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*/
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class Math {
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/**
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* 取随机值 左闭右闭
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* @function
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* @param {integer} Min
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* @param {integer} Max
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* @returns {integer}
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*/
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function Rand(Min, Max) {
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local In = rand();
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local Ret = (Min + (Max - Min + 1) * (In / (RAND_MAX + 1).tofloat())).tointeger();
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return Ret;
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}
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/**
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* 随机返回数组中的任意一个数
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* @function
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* @param {array} arr
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* @returns {any}
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*/
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function GetRandomElementFromArray(arr) {
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if (arr.len() == 0) {
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return null;
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}
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// 生成一个0到数组长度-1之间的随机索引
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local randomIndex = Math.Rand(0, arr.len() - 1);
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return arr[randomIndex];
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}
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/**
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* 通过坐标获得两点旋转角度
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* @function
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* @param {integer} x1
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* @param {integer} y1
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* @param {integer} x2
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* @param {integer} y2
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* @returns {float}
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*/
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function GetRorateAngleByPos(x1, y1, x2, y2) {
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return (atan2((y2 - y1).tofloat(), (x2 - x1).tofloat()) * 180) / PI;
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}
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/**
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*
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* @function
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* @param {integer} x1
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* @param {aintegerny} y1
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* @param {integer} x2
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* @param {integer} y2
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* @returns {float}
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*/
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function GetDistanceByPos(x1, y1, x2, y2) {
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return sqrt(pow((x2 - x1).tofloat(), 2) + pow((y2 - y1).tofloat(), 2));
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}
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/**
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* 获得两值随时间的匀速运动值
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* @function
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* @param {any} sv
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* @param {any} ev
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* @param {float} currentRate
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* @param {float} maxRate
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* @returns {*}
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*/
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function GetUniformVelocity(sv, ev, currentRate, maxRate) {
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local rate = currentRate.tofloat() / maxRate.tofloat();
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local varyValue = ev - sv;
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return sv + varyValue * rate;
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}
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/**
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* 获得两值随时间的变速运动值
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* @function
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* @param {any} sv
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* @param {any} ev
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* @param {float} currentRate
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* @param {float} maxRate
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* @param {any} increaseFeature
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* @returns {*}
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*/
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function GetAccel(sv, ev, currentRate, maxRate, increaseFeature) {
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local rate = currentRate.tofloat() / maxRate.tofloat();
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local varyValue = ev - sv;
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local increaseRate = 1.0;
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if (increaseFeature) {
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increaseRate = pow(50, rate) / 50.0; //慢->快
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} else {
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// 修正后的减速逻辑计算，例如采用线性变换结合幂次运算来实现更合理的减速效果
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// 先将rate映射到一个更合适的范围（这里从[0,1]映射到[0.1, 1]，可调整）
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local mappedRate = rate * 0.9 + 0.1;
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increaseRate = pow(mappedRate, 2); // 幂次可调整，这里取2来让减速更明显，可根据实际情况修改
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}
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return sv + varyValue * increaseRate;
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}
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/**
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* 计算两个矩形是否相交
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* @function
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* @param {any} x1
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* @param {any} y1
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* @param {any} width1
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* @param {any} height1
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* @param {any} x2
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* @param {any} y2
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* @param {any} width2
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* @param {any} height2
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* @returns {boolean}
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*/
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function IsIntersectRect(x1, y1, width1, height1, x2, y2, width2, height2) {
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// 计算矩形1的边界
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local right1 = x1 + width1;
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local bottom1 = y1 + height1;
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// 计算矩形2的边界
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local right2 = x2 + width2;
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local bottom2 = y2 + height2;
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// 检查是否有重叠
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return !(right1 < x2 || bottom1 < y2 || x1 > right2 || y1 > bottom2);
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}
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}
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