Core:

+ add mmaps files.
+ add the generator for movement.

1 files changed, 301 insertions, 0 deletions

diff --git a/src/server/collision/Management/MMapManager.cpp b/src/server/collision/Management/MMapManager.cpp
new file mode 100644
index 00000000000..aac5647a6de
--- /dev/null
+++ b/src/server/collision/Management/MMapManager.cpp
@@ -0,0 +1,301 @@
+/*
+ * Copyright (C) 2008-2011 TrinityCore <http://www.trinitycore.org/>
+ * Copyright (C) 2005-2010 MaNGOS <http://getmangos.com/>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "MMapManager.h"
+#include "Log.h"
+#include "World.h"
+
+namespace MMAP
+{
+    // ######################## MMapManager ########################
+    MMapManager::~MMapManager()
+    {
+        for (MMapDataSet::iterator i = loadedMMaps.begin(); i != loadedMMaps.end(); ++i)
+            delete i->second;
+
+        // by now we should not have maps loaded
+        // if we had, tiles in MMapData->mmapLoadedTiles, their actual data is lost!
+    }
+
+    bool MMapManager::loadMapData(uint32 mapId)
+    {
+        // we already have this map loaded?
+        if (loadedMMaps.find(mapId) != loadedMMaps.end())
+            return true;
+
+        // load and init dtNavMesh - read parameters from file
+        uint32 pathLen = sWorld->GetDataPath().length() + strlen("mmaps/%03i.mmap")+1;
+        char *fileName = new char[pathLen];
+        snprintf(fileName, pathLen, (sWorld->GetDataPath()+"mmaps/%03i.mmap").c_str(), mapId);
+
+        FILE* file = fopen(fileName, "rb");
+        if (!file)
+        {
+            sLog->outDebug(LOG_FILTER_MAPS, "MMAP:loadMapData: Error: Could not open mmap file '%s'", fileName);
+            delete [] fileName;
+            return false;
+        }
+
+        dtNavMeshParams params;
+        fread(&params, sizeof(dtNavMeshParams), 1, file);
+        fclose(file);
+
+        dtNavMesh* mesh = dtAllocNavMesh();
+        ASSERT(mesh);
+        if (DT_SUCCESS != mesh->init(&params))
+        {
+            dtFreeNavMesh(mesh);
+            sLog->outError("MMAP:loadMapData: Failed to initialize dtNavMesh for mmap %03u from file %s", mapId, fileName);
+            delete [] fileName;
+            return false;
+        }
+
+        delete [] fileName;
+
+        sLog->outDetail("MMAP:loadMapData: Loaded %03i.mmap", mapId);
+
+        // store inside our map list
+        MMapData* mmap_data = new MMapData(mesh);
+        mmap_data->mmapLoadedTiles.clear();
+
+        loadedMMaps.insert(std::pair<uint32, MMapData*>(mapId, mmap_data));
+        return true;
+    }
+
+    uint32 MMapManager::packTileID(int32 x, int32 y)
+    {
+        return uint32(x << 16 | y);
+    }
+
+    bool MMapManager::loadMap(uint32 mapId, int32 x, int32 y)
+    {
+        // make sure the mmap is loaded and ready to load tiles
+        if(!loadMapData(mapId))
+            return false;
+
+        // get this mmap data
+        MMapData* mmap = loadedMMaps[mapId];
+        ASSERT(mmap->navMesh);
+
+        // check if we already have this tile loaded
+        uint32 packedGridPos = packTileID(x, y);
+        if (mmap->mmapLoadedTiles.find(packedGridPos) != mmap->mmapLoadedTiles.end())
+        {
+            //sLog->outError("MMAP:loadMap: Asked to load already loaded navmesh tile. %03u%02i%02i.mmtile", mapId, y, x);
+            return false;
+        }
+
+        // load this tile :: mmaps/MMMXXYY.mmtile
+        uint32 pathLen = sWorld->GetDataPath().length() + strlen("mmaps/%03i%02i%02i.mmtile")+1;
+        char *fileName = new char[pathLen];
+        // this change of y and x is needed because of mapbuilder.cpp (x and y are swapped there) so change it here so we dont need to re-extract. All swappes are done in other files. DONT CHANGE THIS!
+        snprintf(fileName, pathLen, (sWorld->GetDataPath()+"mmaps/%03i%02i%02i.mmtile").c_str(), mapId, y, x);
+
+        FILE *file = fopen(fileName, "rb");
+        if (!file)
+        {
+            sLog->outDebug(LOG_FILTER_MAPS, "MMAP:loadMap: Could not open mmtile file '%s'", fileName);
+            delete [] fileName;
+            return false;
+        }
+        delete [] fileName;
+
+        // read header
+        MmapTileHeader fileHeader;
+        fread(&fileHeader, sizeof(MmapTileHeader), 1, file);
+
+        if (fileHeader.mmapMagic != MMAP_MAGIC)
+        {
+            sLog->outError("MMAP:loadMap: Bad header in mmap %03u%02i%02i.mmtile", mapId, y, x);
+            return false;
+        }
+
+        if (fileHeader.mmapVersion != MMAP_VERSION)
+        {
+            sLog->outError("MMAP:loadMap: %03u%02i%02i.mmtile was built with generator v%i, expected v%i",
+                mapId, x, y, fileHeader.mmapVersion, MMAP_VERSION);
+            return false;
+        }
+
+        unsigned char* data = (unsigned char*)dtAlloc(fileHeader.size, DT_ALLOC_PERM);
+        ASSERT(data);
+
+        size_t result = fread(data, fileHeader.size, 1, file);
+        if(!result)
+        {
+            sLog->outError("MMAP:loadMap: Bad header or data in mmap %03u%02i%02i.mmtile", mapId, y, x);
+            fclose(file);
+            return false;
+        }
+
+        fclose(file);
+
+        dtMeshHeader* header = (dtMeshHeader*)data;
+        dtTileRef tileRef = 0;
+
+        // memory allocated for data is now managed by detour, and will be deallocated when the tile is removed
+        if (DT_SUCCESS == mmap->navMesh->addTile(data, fileHeader.size, DT_TILE_FREE_DATA, 0, &tileRef))
+        {
+            mmap->mmapLoadedTiles.insert(std::pair<uint32, dtTileRef>(packedGridPos, tileRef));
+            ++loadedTiles;
+            sLog->outDetail("MMAP:loadMap: Loaded mmtile %03i[%02i,%02i] into %03i[%02i,%02i]", mapId, y, x, mapId, header->x, header->y);
+            return true;
+        }
+        else
+        {
+            sLog->outError("MMAP:loadMap: Could not load %03u%02i%02i.mmtile into navmesh", mapId, y, x);
+            dtFree(data);
+            return false;
+        }
+
+        return false;
+    }
+
+    bool MMapManager::unloadMap(uint32 mapId, int32 x, int32 y)
+    {
+        // check if we have this map loaded
+        if (loadedMMaps.find(mapId) == loadedMMaps.end())
+        {
+            // file may not exist, therefore not loaded
+            sLog->outDebug(LOG_FILTER_MAPS, "MMAP:unloadMap: Asked to unload not loaded navmesh map. %03u%02i%02i.mmtile", mapId, y, x);
+            return false;
+        }
+
+        MMapData* mmap = loadedMMaps[mapId];
+
+        // check if we have this tile loaded
+        uint32 packedGridPos = packTileID(x, y);
+        if (mmap->mmapLoadedTiles.find(packedGridPos) == mmap->mmapLoadedTiles.end())
+        {
+            // file may not exist, therefore not loaded
+            sLog->outDebug(LOG_FILTER_MAPS, "MMAP:unloadMap: Asked to unload not loaded navmesh tile. %03u%02i%02i.mmtile", mapId, y, x);
+            return false;
+        }
+
+        dtTileRef tileRef = mmap->mmapLoadedTiles[packedGridPos];
+
+        // unload, and mark as non loaded
+        if (DT_SUCCESS != mmap->navMesh->removeTile(tileRef, NULL, NULL))
+        {
+            // this is technically a memory leak
+            // if the grid is later reloaded, dtNavMesh::addTile will return error but no extra memory is used
+            // we cannot recover from this error - assert out
+            sLog->outError("MMAP:unloadMap: Could not unload %03u%02i%02i.mmtile from navmesh", mapId, y, x);
+            ASSERT(false);
+        }
+        else
+        {
+            mmap->mmapLoadedTiles.erase(packedGridPos);
+            --loadedTiles;
+            sLog->outDetail("MMAP:unloadMap: Unloaded mmtile %03i[%02i,%02i] from %03i", mapId, y, x, mapId);
+            return true;
+        }
+
+        return false;
+    }
+
+    bool MMapManager::unloadMap(uint32 mapId)
+    {
+        if (loadedMMaps.find(mapId) == loadedMMaps.end())
+        {
+            // file may not exist, therefore not loaded
+            sLog->outDebug(LOG_FILTER_MAPS, "MMAP:unloadMap: Asked to unload not loaded navmesh map %03u", mapId);
+            return false;
+        }
+
+        // unload all tiles from given map
+        MMapData* mmap = loadedMMaps[mapId];
+        for (MMapTileSet::iterator i = mmap->mmapLoadedTiles.begin(); i != mmap->mmapLoadedTiles.end(); ++i)
+        {
+            uint32 x = (i->first >> 16);
+            uint32 y = (i->first & 0x0000FFFF);
+            if (DT_SUCCESS != mmap->navMesh->removeTile(i->second, NULL, NULL))
+                sLog->outError("MMAP:unloadMap: Could not unload %03u%02i%02i.mmtile from navmesh", mapId, y, x);
+            else
+            {
+                --loadedTiles;
+                sLog->outDetail("MMAP:unloadMap: Unloaded mmtile %03i[%02i,%02i] from %03i", mapId, y, x, mapId);
+            }
+        }
+
+        delete mmap;
+        loadedMMaps.erase(mapId);
+        sLog->outDetail("MMAP:unloadMap: Unloaded %03i.mmap", mapId);
+
+        return true;
+    }
+
+    bool MMapManager::unloadMapInstance(uint32 mapId, uint32 instanceId)
+    {
+        // check if we have this map loaded
+        if (loadedMMaps.find(mapId) == loadedMMaps.end())
+        {
+            // file may not exist, therefore not loaded
+            sLog->outDebug(LOG_FILTER_MAPS, "MMAP:unloadMapInstance: Asked to unload not loaded navmesh map %03u", mapId);
+            return false;
+        }
+
+        MMapData* mmap = loadedMMaps[mapId];
+        if (mmap->navMeshQueries.find(instanceId) == mmap->navMeshQueries.end())
+        {
+            sLog->outDebug(LOG_FILTER_MAPS, "MMAP:unloadMapInstance: Asked to unload not loaded dtNavMeshQuery mapId %03u instanceId %u", mapId, instanceId);
+            return false;
+        }
+
+        dtNavMeshQuery* query = mmap->navMeshQueries[instanceId];
+
+        dtFreeNavMeshQuery(query);
+        mmap->navMeshQueries.erase(instanceId);
+        sLog->outDetail("MMAP:unloadMapInstance: Unloaded mapId %03u instanceId %u", mapId, instanceId);
+
+        return true;
+    }
+
+    dtNavMesh const* MMapManager::GetNavMesh(uint32 mapId)
+    {
+        if (loadedMMaps.find(mapId) == loadedMMaps.end())
+            return NULL;
+
+        return loadedMMaps[mapId]->navMesh;
+    }
+
+    dtNavMeshQuery const* MMapManager::GetNavMeshQuery(uint32 mapId, uint32 instanceId)
+    {
+        if (loadedMMaps.find(mapId) == loadedMMaps.end())
+            return NULL;
+
+        MMapData* mmap = loadedMMaps[mapId];
+        if (mmap->navMeshQueries.find(instanceId) == mmap->navMeshQueries.end())
+        {
+            // allocate mesh query
+            dtNavMeshQuery* query = dtAllocNavMeshQuery();
+            ASSERT(query);
+            if (DT_SUCCESS != query->init(mmap->navMesh, 1024))
+            {
+                dtFreeNavMeshQuery(query);
+                sLog->outError("MMAP:GetNavMeshQuery: Failed to initialize dtNavMeshQuery for mapId %03u instanceId %u", mapId, instanceId);
+                return NULL;
+            }
+
+            sLog->outDetail("MMAP:GetNavMeshQuery: created dtNavMeshQuery for mapId %03u instanceId %u", mapId, instanceId);
+            mmap->navMeshQueries.insert(std::pair<uint32, dtNavMeshQuery*>(instanceId, query));
+        }
+
+        return mmap->navMeshQueries[instanceId];
+    }
+}
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