hondacrx
f7ae161e3d
Port From (https://github.com/TrinityCore/TrinityCore/commit/86725ed9267803506d8a5cab04c2c5641a234dd9)
301 lines
12 KiB
C#
301 lines
12 KiB
C#
// Copyright (c) CypherCore <http://github.com/CypherCore> All rights reserved.
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// Licensed under the GNU GENERAL PUBLIC LICENSE. See LICENSE file in the project root for full license information.
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using Framework.Constants;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Text;
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namespace Game
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{
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public class MMapManager : Singleton<MMapManager>
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{
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MMapManager() { }
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const string MAP_FILE_NAME_FORMAT = "{0}/mmaps/{1:D4}.mmap";
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const string TILE_FILE_NAME_FORMAT = "{0}/mmaps/{1:D4}{2:D2}{3:D2}.mmtile";
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public void Initialize(MultiMap<uint, uint> mapData)
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{
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foreach (var pair in mapData)
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parentMapData[pair.Value] = pair.Key;
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}
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MMapData GetMMapData(uint mapId)
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{
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return loadedMMaps.LookupByKey(mapId);
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}
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bool LoadMapData(string basePath, uint mapId)
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{
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// we already have this map loaded?
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if (loadedMMaps.ContainsKey(mapId) && loadedMMaps[mapId] != null)
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return true;
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// load and init dtNavMesh - read parameters from file
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string filename = string.Format(MAP_FILE_NAME_FORMAT, basePath, mapId);
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if (!File.Exists(filename))
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{
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Log.outError(LogFilter.Maps, "Could not open mmap file {0}", filename);
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return false;
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}
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using BinaryReader reader = new(new FileStream(filename, FileMode.Open, FileAccess.Read), Encoding.UTF8);
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Detour.dtNavMeshParams Params = new();
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Params.orig[0] = reader.ReadSingle();
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Params.orig[1] = reader.ReadSingle();
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Params.orig[2] = reader.ReadSingle();
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Params.tileWidth = reader.ReadSingle();
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Params.tileHeight = reader.ReadSingle();
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Params.maxTiles = reader.ReadInt32();
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Params.maxPolys = reader.ReadInt32();
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Detour.dtNavMesh mesh = new();
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if (Detour.dtStatusFailed(mesh.init(Params)))
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{
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Log.outError(LogFilter.Maps, "MMAP:loadMapData: Failed to initialize dtNavMesh for mmap {0:D4} from file {1}", mapId, filename);
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return false;
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}
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Log.outInfo(LogFilter.Maps, "MMAP:loadMapData: Loaded {0:D4}.mmap", mapId);
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// store inside our map list
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loadedMMaps[mapId] = new MMapData(mesh);
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return true;
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}
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uint PackTileID(int x, int y)
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{
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return (uint)(x << 16 | y);
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}
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public bool LoadMap(string basePath, uint mapId, int x, int y)
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{
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// make sure the mmap is loaded and ready to load tiles
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if (!LoadMapData(basePath, mapId))
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return false;
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// get this mmap data
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MMapData mmap = loadedMMaps[mapId];
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Cypher.Assert(mmap.navMesh != null);
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// check if we already have this tile loaded
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uint packedGridPos = PackTileID(x, y);
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if (mmap.loadedTileRefs.ContainsKey(packedGridPos))
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return false;
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// load this tile . mmaps/MMMXXYY.mmtile
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string fileName = string.Format(TILE_FILE_NAME_FORMAT, basePath, mapId, x, y);
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if (!File.Exists(fileName))
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{
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if (parentMapData.ContainsKey(mapId))
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fileName = string.Format(TILE_FILE_NAME_FORMAT, basePath, parentMapData[mapId], x, y);
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}
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if (!File.Exists(fileName))
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{
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Log.outDebug(LogFilter.Maps, "MMAP:loadMap: Could not open mmtile file '{0}'", fileName);
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return false;
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}
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using BinaryReader reader = new(new FileStream(fileName, FileMode.Open, FileAccess.Read));
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MmapTileHeader fileHeader = reader.Read<MmapTileHeader>();
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if (fileHeader.mmapMagic != MapConst.mmapMagic)
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{
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Log.outError(LogFilter.Maps, "MMAP:loadMap: Bad header in mmap {0:D4}{1:D2}{2:D2}.mmtile", mapId, x, y);
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return false;
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}
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if (fileHeader.mmapVersion != MapConst.mmapVersion)
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{
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Log.outError(LogFilter.Maps, "MMAP:loadMap: {0:D4}{1:D2}{2:D2}.mmtile was built with generator v{3}, expected v{4}",
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mapId, x, y, fileHeader.mmapVersion, MapConst.mmapVersion);
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return false;
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}
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var bytes = reader.ReadBytes((int)fileHeader.size);
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Detour.dtRawTileData data = new();
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data.FromBytes(bytes, 0);
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ulong tileRef = 0;
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// memory allocated for data is now managed by detour, and will be deallocated when the tile is removed
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if (Detour.dtStatusSucceed(mmap.navMesh.addTile(data, 1, 0, ref tileRef)))
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{
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mmap.loadedTileRefs.Add(packedGridPos, tileRef);
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++loadedTiles;
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Log.outInfo(LogFilter.Maps, "MMAP:loadMap: Loaded mmtile {0:D4}[{1:D2}, {2:D2}]", mapId, x, y);
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return true;
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}
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Log.outError(LogFilter.Maps, "MMAP:loadMap: Could not load {0:D4}{1:D2}{2:D2}.mmtile into navmesh", mapId, x, y);
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return false;
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}
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public bool LoadMapInstance(string basePath, uint meshMapId, uint instanceMapId, uint instanceId)
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{
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if (!LoadMapData(basePath, meshMapId))
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return false;
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MMapData mmap = loadedMMaps[meshMapId];
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if (mmap.navMeshQueries.ContainsKey((instanceMapId, instanceId)))
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return true;
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// allocate mesh query
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Detour.dtNavMeshQuery query = new();
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if (Detour.dtStatusFailed(query.init(mmap.navMesh, 1024)))
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{
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Log.outError(LogFilter.Maps, $"MMAP.GetNavMeshQuery: Failed to initialize dtNavMeshQuery for mapId {instanceMapId:D4} instanceId {instanceId}");
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return false;
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}
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Log.outDebug(LogFilter.Maps, $"MMAP.GetNavMeshQuery: created dtNavMeshQuery for mapId {instanceMapId:D4} instanceId {instanceId}");
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mmap.navMeshQueries.Add((instanceMapId, instanceId), query);
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return true;
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}
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public bool UnloadMap(uint mapId, int x, int y)
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{
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// check if we have this map loaded
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MMapData mmap = GetMMapData(mapId);
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if (mmap == null)
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{
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// file may not exist, therefore not loaded
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Log.outDebug(LogFilter.Maps, "MMAP:unloadMap: Asked to unload not loaded navmesh map. {0:D4}{1:D2}{2:D2}.mmtile", mapId, x, y);
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return false;
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}
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// check if we have this tile loaded
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uint packedGridPos = PackTileID(x, y);
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if (!mmap.loadedTileRefs.ContainsKey(packedGridPos))
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{
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// file may not exist, therefore not loaded
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Log.outDebug(LogFilter.Maps, "MMAP:unloadMap: Asked to unload not loaded navmesh tile. {0:D4}{1:D2}{2:D2}.mmtile", mapId, x, y);
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return false;
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}
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ulong tileRef = mmap.loadedTileRefs[packedGridPos];
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// unload, and mark as non loaded
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if (Detour.dtStatusFailed(mmap.navMesh.removeTile(tileRef, out _)))
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{
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// this is technically a memory leak
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// if the grid is later reloaded, dtNavMesh.addTile will return error but no extra memory is used
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// we cannot recover from this error - assert out
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Log.outError(LogFilter.Maps, "MMAP:unloadMap: Could not unload {0:D4}{1:D2}{2:D2}.mmtile from navmesh", mapId, x, y);
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Cypher.Assert(false);
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}
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else
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{
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mmap.loadedTileRefs.Remove(packedGridPos);
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--loadedTiles;
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Log.outInfo(LogFilter.Maps, "MMAP:unloadMap: Unloaded mmtile {0:D4}[{1:D2}, {2:D2}] from {3:D4}", mapId, x, y, mapId);
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return true;
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}
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return false;
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}
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public bool UnloadMap(uint mapId)
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{
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if (!loadedMMaps.ContainsKey(mapId))
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{
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// file may not exist, therefore not loaded
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Log.outDebug(LogFilter.Maps, "MMAP:unloadMap: Asked to unload not loaded navmesh map {0:D4}", mapId);
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return false;
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}
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// unload all tiles from given map
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MMapData mmap = loadedMMaps.LookupByKey(mapId);
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foreach (var i in mmap.loadedTileRefs)
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{
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uint x = (i.Key >> 16);
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uint y = (i.Key & 0x0000FFFF);
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if (Detour.dtStatusFailed(mmap.navMesh.removeTile(i.Value, out _)))
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Log.outError(LogFilter.Maps, "MMAP:unloadMap: Could not unload {0:D4}{1:D2}{2:D2}.mmtile from navmesh", mapId, x, y);
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else
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{
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--loadedTiles;
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Log.outInfo(LogFilter.Maps, "MMAP:unloadMap: Unloaded mmtile {0:D4} [{1:D2}, {2:D2}] from {3:D4}", mapId, x, y, mapId);
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}
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}
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loadedMMaps.Remove(mapId);
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Log.outInfo(LogFilter.Maps, "MMAP:unloadMap: Unloaded {0:D4}.mmap", mapId);
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return true;
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}
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public bool UnloadMapInstance(uint meshMapId, uint instanceMapId, uint instanceId)
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{
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// check if we have this map loaded
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MMapData mmap = GetMMapData(meshMapId);
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if (mmap == null)
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{
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// file may not exist, therefore not loaded
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Log.outDebug(LogFilter.Maps, $"MMAP:unloadMapInstance: Asked to unload not loaded navmesh map {meshMapId}");
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return false;
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}
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if (!mmap.navMeshQueries.ContainsKey((instanceMapId, instanceId)))
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{
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Log.outDebug(LogFilter.Maps, $"MMAP:unloadMapInstance: Asked to unload not loaded dtNavMeshQuery mapId {instanceMapId} instanceId {instanceId}");
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return false;
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}
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mmap.navMeshQueries.Remove((instanceMapId, instanceId));
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Log.outInfo(LogFilter.Maps, $"MMAP:unloadMapInstance: Unloaded mapId {instanceMapId} instanceId {instanceId}");
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return true;
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}
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public Detour.dtNavMesh GetNavMesh(uint mapId)
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{
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MMapData mmap = GetMMapData(mapId);
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if (mmap == null)
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return null;
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return mmap.navMesh;
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}
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public Detour.dtNavMeshQuery GetNavMeshQuery(uint meshMapId, uint instanceMapId, uint instanceId)
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{
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MMapData mmap = GetMMapData(meshMapId);
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if (mmap == null)
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return null;
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return mmap.navMeshQueries.LookupByKey((instanceMapId, instanceId));
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}
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public uint GetLoadedTilesCount() { return loadedTiles; }
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public int GetLoadedMapsCount() { return loadedMMaps.Count; }
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Dictionary<uint, MMapData> loadedMMaps = new();
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uint loadedTiles;
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Dictionary<uint, uint> parentMapData = new();
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}
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public class MMapData
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{
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public MMapData(Detour.dtNavMesh mesh)
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{
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navMesh = mesh;
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}
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public Dictionary<(uint, uint), Detour.dtNavMeshQuery> navMeshQueries = new(); // instanceId to query
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public Detour.dtNavMesh navMesh;
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public Dictionary<uint, ulong> loadedTileRefs = new(); // maps [map grid coords] to [dtTile]
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}
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public struct MmapTileHeader
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{
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public uint mmapMagic;
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public uint dtVersion;
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public uint mmapVersion;
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public uint size;
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public byte usesLiquids;
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}
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}
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