51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
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// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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template <typename T, int32 Size = 64>
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struct TFixedCircularBuffer
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{
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T Buffer[Size];
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int32 BufferStartOffset = 0;
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int32 BufferLength = 0;
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void Reset()
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{
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BufferStartOffset = 0;
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BufferLength = 0;
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}
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void AddValue(const T Value)
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{
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Buffer[BufferStartOffset] = Value;
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BufferStartOffset++;
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if (BufferStartOffset == Size)
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{
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BufferStartOffset = 0;
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}
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if (BufferLength < Size)
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{
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BufferLength++;
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}
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}
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const T GetValue(const int32 RecentIndex) const
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{
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return Buffer[(BufferStartOffset + Size - RecentIndex - 1) % Size];
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}
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const T ComputeAverage() const
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{
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if (BufferLength == 0)
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{
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return 0;
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}
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T Total = 0;
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for (int32 RecentIndex = 0; RecentIndex < BufferLength; ++RecentIndex)
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{
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Total += Buffer[(BufferStartOffset + Size - RecentIndex - 1) % Size];
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}
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return Total / BufferLength;
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}
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};
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