s&box

Utility static helper that picks a random key from a Dictionary<T, float> using weights. It sums weights, multiplies a random double by the total, then walks entries subtracting weights until value <= 0 and returns that key.

NetworkingFile AccessReflectionProcess ExecutionNative InteropObfuscated CodeEncoded DataExternal DownloadCredential AccessSelf Modifying CodeHttp Calls

using System;
using System.Collections.Generic;

namespace BrickJam;

public static class WeightedList
{
	public static T RandomKey<T>( Dictionary<T, float> weightedDictionary )
	{
		var totalWeight = 0f;

		foreach ( var weight in weightedDictionary.Values )
			totalWeight += weight;

		var randomValue = (float)(MansionGame.Random.NextDouble() * totalWeight);

		foreach ( var entry in weightedDictionary )
		{
			randomValue -= entry.Value;

			if ( randomValue <= 0 )
				return entry.Key;
		}

		return default;
	}
}