forked from mirror/DotRecast
112 lines
4.4 KiB
C#
112 lines
4.4 KiB
C#
/*
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Copyright (c) 2009-2010 Mikko Mononen memon@inside.org
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recast4j copyright (c) 2015-2019 Piotr Piastucki piotr@jtilia.org
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DotRecast Copyright (c) 2023 Choi Ikpil ikpil@naver.com
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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using System.IO;
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using DotRecast.Core;
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using DotRecast.Detour.Io;
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using DotRecast.Detour.TileCache.Io.Compress;
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namespace DotRecast.Detour.TileCache.Io
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{
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public class DtTileCacheReader
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{
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private readonly DtNavMeshParamsReader paramReader = new DtNavMeshParamsReader();
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public DtTileCache Read(BinaryReader @is, int maxVertPerPoly, IDtTileCacheMeshProcess meshProcessor)
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{
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RcByteBuffer bb = IOUtils.ToByteBuffer(@is);
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return Read(bb, maxVertPerPoly, meshProcessor);
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}
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public DtTileCache Read(RcByteBuffer bb, int maxVertPerPoly, IDtTileCacheMeshProcess meshProcessor)
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{
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DtTileCacheSetHeader header = new DtTileCacheSetHeader();
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header.magic = bb.GetInt();
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if (header.magic != DtTileCacheSetHeader.TILECACHESET_MAGIC)
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{
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header.magic = IOUtils.SwapEndianness(header.magic);
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if (header.magic != DtTileCacheSetHeader.TILECACHESET_MAGIC)
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{
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throw new IOException("Invalid magic");
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}
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bb.Order(bb.Order() == RcByteOrder.BIG_ENDIAN ? RcByteOrder.LITTLE_ENDIAN : RcByteOrder.BIG_ENDIAN);
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}
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header.version = bb.GetInt();
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if (header.version != DtTileCacheSetHeader.TILECACHESET_VERSION)
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{
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if (header.version != DtTileCacheSetHeader.TILECACHESET_VERSION_RECAST4J)
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{
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throw new IOException("Invalid version");
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}
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}
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bool cCompatibility = header.version == DtTileCacheSetHeader.TILECACHESET_VERSION;
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header.numTiles = bb.GetInt();
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header.meshParams = paramReader.Read(bb);
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header.cacheParams = ReadCacheParams(bb, cCompatibility);
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DtNavMesh mesh = new DtNavMesh(header.meshParams, maxVertPerPoly);
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IDtTileCacheCompressor compressor = DtTileCacheCompressorFactory.Get(cCompatibility);
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DtTileCache tc = new DtTileCache(header.cacheParams, new TileCacheStorageParams(bb.Order(), cCompatibility), mesh,
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compressor, meshProcessor);
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// Read tiles.
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for (int i = 0; i < header.numTiles; ++i)
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{
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long tileRef = bb.GetInt();
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int dataSize = bb.GetInt();
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if (tileRef == 0 || dataSize == 0)
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{
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break;
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}
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byte[] data = bb.ReadBytes(dataSize).ToArray();
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long tile = tc.AddTile(data, 0);
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if (tile != 0)
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{
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tc.BuildNavMeshTile(tile);
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}
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}
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return tc;
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}
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private DtTileCacheParams ReadCacheParams(RcByteBuffer bb, bool cCompatibility)
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{
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DtTileCacheParams option = new DtTileCacheParams();
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option.orig.x = bb.GetFloat();
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option.orig.y = bb.GetFloat();
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option.orig.z = bb.GetFloat();
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option.cs = bb.GetFloat();
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option.ch = bb.GetFloat();
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option.width = bb.GetInt();
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option.height = bb.GetInt();
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option.walkableHeight = bb.GetFloat();
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option.walkableRadius = bb.GetFloat();
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option.walkableClimb = bb.GetFloat();
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option.maxSimplificationError = bb.GetFloat();
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option.maxTiles = bb.GetInt();
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option.maxObstacles = bb.GetInt();
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return option;
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}
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}
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} |