仓库中添加内置的demo

demo/assets/script/Math.ts

@@ -0,0 +1,73 @@
+interface Math {
+    /**
+     * 限制值
+     * @param value 当前值
+     * @param min 最小值
+     * @param max 最大值
+     */
+    clampf(value: number, min: number, max: number): number;
+
+    /**
+     * 随机从 min 到 max 的整数(包含min和max)
+     * @param min
+     * @param max
+     */
+    rand(min: number, max: number): number;
+
+    /**
+     * 随机从 min 到 max的数
+     * @param min
+     * @param max
+     */
+    randRange(min: number, max: number): number;
+
+    /**
+     * 角度转弧度
+     * @param angle 角度
+     */
+    rad(angle: number): number;
+
+    /**
+     * 弧度转角度
+     * @param radian 弧度
+     */
+    deg(radian: number): number;
+
+    /**
+     * 数值平滑渐变
+     * @param num1
+     * @param num2
+     * @param elapsedTime
+     * @param responseTime
+     */
+    smooth(num1: number, num2: number, elapsedTime: number, responseTime: number): number;
+}
+
+Math.clampf = function (value: number, min: number, max: number): number {
+    return Math.min(Math.max(value, min), max);
+};
+
+Math.rand = function (min: number, max: number): number {
+    return Math.floor(Math.random() * (max - min + 1) + min);
+};
+
+Math.randRange = function (min: number, max: number): number {
+    return Math.random() * (max - min) + min;
+};
+
+Math.rad = function (angle: number): number {
+    return (angle * Math.PI) / 180;
+};
+
+Math.deg = function (radian: number): number {
+    return (radian * 180) / Math.PI;
+};
+
+Math.smooth = function (num1: number, num2: number, elapsedTime: number, responseTime: number): number {
+    let out: number = num1;
+    if (elapsedTime > 0) {
+        out = out + (num2 - num1) * (elapsedTime / (elapsedTime + responseTime));
+    }
+    return out;
+};
+