67 lines
2.3 KiB
C#
67 lines
2.3 KiB
C#
using System;
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using UnityEngine;
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namespace NEG.Utils.Timing
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{
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public class TimeMachine
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{
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private double timeInternal;
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public TimeMachine()
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{
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timeInternal = 0;
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}
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/// <summary>
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/// Adds time into the TimeMachine
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/// </summary>
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/// <param name="time">Amount of time to be added</param>
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public void Accumulate(double time) => timeInternal += time;
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/// <summary>
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/// Retrieves given amount of time from the TimeMachine
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/// </summary>
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/// <param name="maxTime"></param>
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/// <returns>Amount of time retrieved</returns>
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public double Retrieve(double maxTime)
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{
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if(!double.IsFinite(maxTime))
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{
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double timeRetrieved = timeInternal;
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timeInternal = 0;
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return timeRetrieved;
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}
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double timeLeft = timeInternal - maxTime;
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timeInternal = Math.Max(timeLeft, 0);
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return Math.Min(maxTime + timeLeft, maxTime);
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}
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/// <summary>
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/// Attempts to retrieves given amount of time from the TimeMachine <br/>
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/// If there is enough <paramref name="time"/> accumulated in this machine subtracts that amount and returns true, otherwise returns false
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/// </summary>
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/// <param name="time"></param>
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public bool TryRetrieve(double time)
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{
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if (!(timeInternal >= time))
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return false;
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timeInternal -= time;
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return true;
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}
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/// <summary>
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/// Result is equivalent to calling <see cref="TryRetrieve(double)"/> as many times as possible, but is faster for larger <paramref name="limit"/> values
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/// </summary>
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/// <param name="interval">Single unit of warp time, must be positive</param>
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/// <param name="limit">Maximum amount of warps, must be positive</param>
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/// <returns>Amount of warps</returns>
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public int RetrieveAll(double interval, int limit = int.MaxValue)
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{
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int result = Mathf.FloorToInt((float)(timeInternal / interval));
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result = Math.Clamp(result, 0, limit);
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timeInternal -= result * interval;
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return result;
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}
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}
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}
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