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82 lines
3.2 KiB
82 lines
3.2 KiB
using System; |
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using System.Numerics; |
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using static gaemstone.Bloxel.Constants; |
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namespace gaemstone.Bloxel; |
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public readonly struct ChunkPos |
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: IEquatable<ChunkPos> |
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{ |
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public static readonly ChunkPos ORIGIN = new(0, 0, 0); |
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public int X { get; } |
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public int Y { get; } |
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public int Z { get; } |
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public ChunkPos(int x, int y, int z) => (X, Y, Z) = (x, y, z); |
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public void Deconstruct(out int x, out int y, out int z) => (x, y, z) = (X, Y, Z); |
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public Vector3 GetOrigin() => new( |
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X << ChunkBitShift, Y << ChunkBitShift, Z << ChunkBitShift); |
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public Vector3 GetCenter() => new( |
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(X << ChunkBitShift) + ChunkLength / 2, |
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(Y << ChunkBitShift) + ChunkLength / 2, |
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(Z << ChunkBitShift) + ChunkLength / 2); |
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public ChunkPos Add(int x, int y, int z) |
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=> new(X + x, Y + y, Z + z); |
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public ChunkPos Add(in ChunkPos other) |
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=> new(X + other.X, Y + other.Y, Z + other.Z); |
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public ChunkPos Add(BlockFacing facing) |
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{ var (x, y, z) = facing; return Add(x, y, z); } |
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public ChunkPos Add(Neighbor neighbor) |
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{ var (x, y, z) = neighbor; return Add(x, y, z); } |
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public ChunkPos Subtract(int x, int y, int z) |
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=> new(X - x, Y - y, Z - z); |
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public ChunkPos Subtract(in ChunkPos other) |
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=> new(X - other.X, Y - other.Y, Z - other.Z); |
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public ChunkPos Subtract(BlockFacing facing) |
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{ var (x, y, z) = facing; return Subtract(x, y, z); } |
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public ChunkPos Subtract(Neighbor neighbor) |
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{ var (x, y, z) = neighbor; return Subtract(x, y, z); } |
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public bool Equals(ChunkPos other) |
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=> (X == other.X) && (Y == other.Y) && (Z == other.Z); |
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public override bool Equals(object? obj) |
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=> (obj is ChunkPos pos) && Equals(pos); |
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public override int GetHashCode() => HashCode.Combine(X, Y, Z); |
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public override string ToString() => $"ChunkPos ({X}:{Y}:{Z})"; |
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public string ToShortString() => $"{X}:{Y}:{Z}"; |
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public static ChunkPos operator +(ChunkPos left, ChunkPos right) => left.Add(right); |
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public static ChunkPos operator -(ChunkPos left, ChunkPos right) => left.Subtract(right); |
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public static ChunkPos operator +(ChunkPos left, BlockFacing right) => left.Add(right); |
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public static ChunkPos operator -(ChunkPos left, BlockFacing right) => left.Subtract(right); |
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public static ChunkPos operator +(ChunkPos left, Neighbor right) => left.Add(right); |
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public static ChunkPos operator -(ChunkPos left, Neighbor right) => left.Subtract(right); |
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public static bool operator ==(ChunkPos left, ChunkPos right) => left.Equals(right); |
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public static bool operator !=(ChunkPos left, ChunkPos right) => !left.Equals(right); |
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} |
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public static class ChunkPosExtensions |
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{ |
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public static ChunkPos ToChunkPos(this Vector3 pos) => new( |
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(int)MathF.Floor(pos.X) >> ChunkBitShift, |
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(int)MathF.Floor(pos.Y) >> ChunkBitShift, |
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(int)MathF.Floor(pos.Z) >> ChunkBitShift); |
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public static ChunkPos ToChunkPos(this BlockPos self) => new( |
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self.X >> ChunkBitShift, self.Y >> ChunkBitShift, self.Z >> ChunkBitShift); |
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public static BlockPos ToChunkRelative(this BlockPos self) => new( |
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self.X & ChunkBitMask, self.Y & ChunkBitMask, self.Z & ChunkBitMask); |
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public static BlockPos ToChunkRelative(this BlockPos self, ChunkPos chunk) => new( |
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self.X - (chunk.X << ChunkBitShift), |
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self.Y - (chunk.Y << ChunkBitShift), |
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self.Z - (chunk.Z << ChunkBitShift)); |
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}
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