92 lines
2.6 KiB
C#
92 lines
2.6 KiB
C#
using Content.Shared.Atmos.EntitySystems;
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using Robust.Shared.Serialization;
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using Robust.Shared.Timing;
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using Robust.Shared.Utility;
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using static Content.Shared.Atmos.EntitySystems.SharedGasTileOverlaySystem;
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namespace Content.Shared.Atmos
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{
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[Serializable, NetSerializable]
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[Access(typeof(SharedGasTileOverlaySystem))]
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public sealed class GasOverlayChunk
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{
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/// <summary>
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/// The index of this chunk
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/// </summary>
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public readonly Vector2i Index;
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public readonly Vector2i Origin;
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public GasOverlayData[] TileData = new GasOverlayData[ChunkSize * ChunkSize];
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[NonSerialized]
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public GameTick LastUpdate;
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public GasOverlayChunk(Vector2i index)
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{
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Index = index;
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Origin = Index * ChunkSize;
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}
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public GasOverlayChunk(GasOverlayChunk data)
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{
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Index = data.Index;
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Origin = data.Origin;
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// This does not clone the opacity array. However, this chunk cloning is only used by the client,
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// which never modifies that directly. So this should be fine.
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Array.Copy(data.TileData, TileData, data.TileData.Length);
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}
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/// <summary>
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/// Resolve a data index into <see cref="TileData"/> for the given grid index.
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/// </summary>
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public int GetDataIndex(Vector2i gridIndices)
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{
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DebugTools.Assert(InBounds(gridIndices));
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return (gridIndices.X - Origin.X) + (gridIndices.Y - Origin.Y) * ChunkSize;
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}
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private bool InBounds(Vector2i gridIndices)
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{
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return gridIndices.X >= Origin.X &&
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gridIndices.Y >= Origin.Y &&
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gridIndices.X < Origin.X + ChunkSize &&
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gridIndices.Y < Origin.Y + ChunkSize;
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}
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}
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public struct GasChunkEnumerator
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{
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private readonly GasOverlayData[] _tileData;
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private int _index = -1;
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public int X = ChunkSize - 1;
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public int Y = -1;
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public GasChunkEnumerator(GasOverlayChunk chunk)
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{
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_tileData = chunk.TileData;
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}
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public bool MoveNext(out GasOverlayData gas)
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{
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while (++_index < _tileData.Length)
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{
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X += 1;
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if (X >= ChunkSize)
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{
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X = 0;
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Y += 1;
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}
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gas = _tileData[_index];
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if (!gas.Equals(default))
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return true;
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}
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gas = default;
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return false;
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}
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}
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}
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