using System;
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using Core.Extensions;
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using UnityEngine;
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namespace ActionGameFramework.Audio
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{
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/// <summary>
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/// Weighted audio list
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/// </summary>
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[Serializable]
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public class WeightedAudioList
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{
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/// <summary>
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/// Items with their corresponding weights
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/// </summary>
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public WeightedAudioClip[] weightedItems;
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/// <summary>
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/// The sum of all items weights
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/// </summary>
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protected int m_WeightSum = -1;
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/// <summary>
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/// Gets the weight sum.
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/// </summary>
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/// <value>The weight sum.</value>
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public int weightSum
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{
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get
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{
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if (m_WeightSum < 0)
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{
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CalculateWeightSum();
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}
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return m_WeightSum;
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}
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}
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/// <summary>
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/// Gets a random audio clip from the weighted list
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/// </summary>
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/// <returns>The selection.</returns>
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public AudioClip WeightedSelection()
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{
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if (weightedItems.Length == 0)
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{
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return null;
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}
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WeightedAudioClip item = weightedItems.WeightedSelection(weightSum, t => t.weight);
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return item.clip;
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}
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/// <summary>
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/// Calculates the sum of all item weights
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/// </summary>
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protected void CalculateWeightSum()
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{
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m_WeightSum = 0;
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int count = weightedItems.Length;
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for (int i = 0; i < count; i++)
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{
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m_WeightSum += weightedItems[i].weight;
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}
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}
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}
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}
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