bbradson
43 lines
1.1 KiB
C#
43 lines
1.1 KiB
C#
// Copyright (c) 2023 bradson
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at https://mozilla.org/MPL/2.0/.
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namespace PerformanceFish.Cache;
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public sealed class BitCellGrid
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{
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private long[] _innerArray;
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private CellIndices _cellIndices;
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public BitCellGrid(Map map)
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{
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_innerArray = null!;
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_cellIndices = null!;
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map.InvokeWhenCellIndicesReady(Initialize);
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}
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private void Initialize(Map map)
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{
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_cellIndices = map.cellIndices;
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_innerArray = new long[(Math.Max(0, _cellIndices.NumGridCells - 1) >> 6) + 1];
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}
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public bool this[int index]
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{
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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get => (_innerArray[index >> 6] & (1L << (index & 63))) != 0L;
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set
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{
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ref var bucket = ref _innerArray[index >> 6];
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bucket ^= (-(long)value.AsInt() ^ bucket) & (1L << (index & 63));
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}
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}
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public bool this[in IntVec3 c]
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{
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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get => this[c.CellToIndex(_cellIndices)];
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set => this[c.CellToIndex(_cellIndices)] = value;
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}
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} |