123 lines
3.9 KiB
C#
123 lines
3.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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namespace ColdMint.scripts.utils;
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/// <summary>
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/// <para>Light layer utils</para>
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/// <para>光照层工具</para>
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/// </summary>
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public static class LightMaskUtils
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{
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private static readonly int[] PowInts =
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[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536, 131072, 262144, 524288];
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/// <summary>
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/// <para>Pass in a number and return the largest subscript that matches it.</para>
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/// <para>传入一个数字，返回与其匹配的最大下标</para>
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/// </summary>
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/// <param name="number"></param>
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/// <param name="startIndex"></param>
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/// <returns></returns>
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private static int GetMaxPow(int number, int startIndex)
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{
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for (var i = startIndex - 1; i >= 0; i--)
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{
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var pow = PowInts[i];
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if (number >= pow)
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{
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return i;
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}
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}
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return -1;
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}
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/// <summary>
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/// <para>ParseMaskValue</para>
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/// <para>解析Mask的值</para>
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/// </summary>
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/// <param name="maskValue">
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///<para>maskValue</para>
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///<para>值</para>
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/// </param>
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/// <param name="afterParsingTheValue">
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///<para>This callback returns true when the value is parsed, stopping the parsing immediately.</para>
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///<para>当解析到值时，此回调返回true，立即停止解析。</para>
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/// </param>
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/// <returns>
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///<para>The position of the element corresponding to its value, For example, passing in 10, returning [1,3]</para>
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///<para>与其值对应的元素位置，例如传入10,返回[1,3]</para>
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/// </returns>
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public static int[] ParseMaskValue(int maskValue, Func<int, bool>? afterParsingTheValue = null)
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{
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var result = new List<int>();
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var startIndex = PowInts.Length;
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var indexInPowIntArray = GetMaxPow(maskValue, startIndex);
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while (indexInPowIntArray > -1)
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{
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result.Insert(0, indexInPowIntArray);
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if (afterParsingTheValue != null)
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{
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if (afterParsingTheValue.Invoke(indexInPowIntArray))
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{
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//If it needs to be stopped, then the result is returned directly.
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//如果需要停止，那么直接返回结果。
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return result.ToArray();
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}
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}
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maskValue -= PowInts[indexInPowIntArray];
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startIndex = indexInPowIntArray;
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indexInPowIntArray = GetMaxPow(maskValue, startIndex);
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}
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return result.ToArray();
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}
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/// <summary>
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/// <para>Is there a location within the mask value?</para>
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/// <para>mask值内是否包含某个位置？</para>
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/// </summary>
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/// <param name="maskValue"></param>
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/// <param name="index"></param>
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/// <returns></returns>
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public static bool ContainsMaskValue(int maskValue, int index)
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{
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var result = false;
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ParseMaskValue(maskValue, i =>
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{
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result = i == index;
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return result;
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});
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return result;
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}
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/// <summary>
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/// <para>Add a location to MaskValue</para>
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/// <para>为MaskValue添加某个位置</para>
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/// </summary>
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/// <param name="maskValue"></param>
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/// <param name="index"></param>
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/// <returns></returns>
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public static int AddIndexToMaskValue(int maskValue, int index)
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{
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if (ContainsMaskValue(maskValue,index))
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{
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return maskValue;
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}
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return maskValue + PowInts[index];
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}
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/// <summary>
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/// <para>Converting an array to its corresponding value</para>
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/// <para>将数组转化为与其对应的值</para>
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/// </summary>
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/// <param name="array"></param>
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/// <returns></returns>
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public static int ArrayToMaskValue(int[] array)
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{
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return array.Sum(index => PowInts[index]);
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}
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} |