| | | 1 | | //======================================================================= |
| | | 2 | | // WorldVoxelIndex.cs |
| | | 3 | | //======================================================================= |
| | | 4 | | // MIT License, Copyright (c) 2024–present David Oravsky (mrdav30) |
| | | 5 | | // See LICENSE file in the project root for full license information. |
| | | 6 | | //======================================================================= |
| | | 7 | | |
| | | 8 | | using System; |
| | | 9 | | using System.Runtime.CompilerServices; |
| | | 10 | | using GridForge.Grids; |
| | | 11 | | using SwiftCollections.Utility; |
| | | 12 | | |
| | | 13 | | namespace GridForge.Spatial; |
| | | 14 | | |
| | | 15 | | /// <summary> |
| | | 16 | | /// Represents the world-scoped runtime identity of a voxel. |
| | | 17 | | /// Used for uniquely identifying voxels across multiple grids and world instances. |
| | | 18 | | /// </summary> |
| | | 19 | | public struct WorldVoxelIndex : IEquatable<WorldVoxelIndex> |
| | | 20 | | { |
| | | 21 | | #region Properties |
| | | 22 | | |
| | | 23 | | /// <summary> |
| | | 24 | | /// The process-unique 64-bit runtime allocation token of the owning <see cref="GridWorld"/> instance. |
| | | 25 | | /// Used to reject stale or cross-world identities safely. |
| | | 26 | | /// </summary> |
| | | 27 | | public long WorldSpawnToken; |
| | | 28 | | |
| | | 29 | | /// <summary> |
| | | 30 | | /// The world-local slot index of the grid in <see cref="GridWorld.ActiveGrids"/>. |
| | | 31 | | /// </summary> |
| | | 32 | | public ushort GridIndex; |
| | | 33 | | |
| | | 34 | | /// <summary> |
| | | 35 | | /// The 64-bit world-local allocation generation assigned to the grid during initialization. |
| | | 36 | | /// Used to ensure the correct instance is at the assigned <see cref="GridIndex"/>. |
| | | 37 | | /// </summary> |
| | | 38 | | public long GridSpawnToken; |
| | | 39 | | |
| | | 40 | | /// <summary> |
| | | 41 | | /// The local coordinate of a voxel within the grid at <see cref="GridIndex"/>. |
| | | 42 | | /// </summary> |
| | | 43 | | public VoxelIndex VoxelIndex; |
| | | 44 | | |
| | | 45 | | #endregion |
| | | 46 | | |
| | | 47 | | #region Constructors |
| | | 48 | | |
| | | 49 | | /// <summary> |
| | | 50 | | /// Initializes a new instance of <see cref="WorldVoxelIndex"/>, linking a voxel to a specific world and grid instan |
| | | 51 | | /// </summary> |
| | | 52 | | public WorldVoxelIndex( |
| | | 53 | | long worldSpawnToken, |
| | | 54 | | ushort gridIndex, |
| | | 55 | | long gridSpawnToken, |
| | | 56 | | VoxelIndex coord) |
| | | 57 | | { |
| | 122339 | 58 | | WorldSpawnToken = worldSpawnToken; |
| | 122339 | 59 | | GridIndex = gridIndex; |
| | 122339 | 60 | | GridSpawnToken = gridSpawnToken; |
| | 122339 | 61 | | VoxelIndex = coord; |
| | 122339 | 62 | | } |
| | | 63 | | |
| | | 64 | | #endregion |
| | | 65 | | |
| | | 66 | | #region operators |
| | | 67 | | |
| | | 68 | | /// <inheritdoc/> |
| | | 69 | | [MethodImpl(MethodImplOptions.AggressiveInlining)] |
| | | 70 | | public static bool operator ==(WorldVoxelIndex left, WorldVoxelIndex right) |
| | | 71 | | { |
| | 8 | 72 | | return left.Equals(right); |
| | | 73 | | } |
| | | 74 | | |
| | | 75 | | /// <inheritdoc/> |
| | | 76 | | [MethodImpl(MethodImplOptions.AggressiveInlining)] |
| | | 77 | | public static bool operator !=(WorldVoxelIndex left, WorldVoxelIndex right) |
| | | 78 | | { |
| | 1 | 79 | | return !(left == right); |
| | | 80 | | } |
| | | 81 | | |
| | | 82 | | #endregion |
| | | 83 | | |
| | | 84 | | #region Overrides |
| | | 85 | | |
| | | 86 | | /// <summary> |
| | | 87 | | /// Returns a string representation of the world-scoped voxel identity. |
| | | 88 | | /// </summary> |
| | | 89 | | public override readonly string ToString() |
| | | 90 | | { |
| | 19 | 91 | | return $"World: {WorldSpawnToken}; Grid: {GridIndex}; Coordinate: {VoxelIndex}"; |
| | | 92 | | } |
| | | 93 | | |
| | | 94 | | /// <summary> |
| | | 95 | | /// Computes a hash code for hash-based lookup. Exact equality remains authoritative. |
| | | 96 | | /// </summary> |
| | | 97 | | public override readonly int GetHashCode() => |
| | 58668 | 98 | | SwiftHashTools.CombineHashCodes( |
| | 58668 | 99 | | WorldSpawnToken.GetHashCode(), |
| | 58668 | 100 | | GridSpawnToken.GetHashCode(), |
| | 58668 | 101 | | GridIndex, |
| | 58668 | 102 | | VoxelIndex.GetHashCode()); |
| | | 103 | | |
| | | 104 | | /// <inheritdoc/> |
| | | 105 | | public readonly bool Equals(WorldVoxelIndex other) |
| | | 106 | | { |
| | 33470 | 107 | | return WorldSpawnToken == other.WorldSpawnToken |
| | 33470 | 108 | | && GridIndex == other.GridIndex |
| | 33470 | 109 | | && GridSpawnToken == other.GridSpawnToken |
| | 33470 | 110 | | && VoxelIndex.Equals(other.VoxelIndex); |
| | | 111 | | } |
| | | 112 | | |
| | | 113 | | /// <inheritdoc/> |
| | 2 | 114 | | public override readonly bool Equals(object? obj) => obj is WorldVoxelIndex other && Equals(other); |
| | | 115 | | |
| | | 116 | | #endregion |
| | | 117 | | } |