242 lines
8.3 KiB
C++
242 lines
8.3 KiB
C++
/**
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* MaNGOS is a full featured server for World of Warcraft, supporting
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* the following clients: 1.12.x, 2.4.3, 3.3.5a, 4.3.4a and 5.4.8
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*
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* Copyright (C) 2005-2020 MaNGOS <https://getmangos.eu>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* World of Warcraft, and all World of Warcraft or Warcraft art, images,
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* and lore are copyrighted by Blizzard Entertainment, Inc.
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*/
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#include "ModelInstance.h"
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#include "WorldModel.h"
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#include "MapTree.h"
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#include "VMapDefinitions.h"
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using G3D::Vector3;
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using G3D::Ray;
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namespace VMAP
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{
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ModelInstance::ModelInstance(const ModelSpawn& spawn, WorldModel* model): ModelSpawn(spawn), iModel(model)
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{
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iInvRot = G3D::Matrix3::fromEulerAnglesZYX(G3D::pi() * iRot.y / 180.f, G3D::pi() * iRot.x / 180.f, G3D::pi() * iRot.z / 180.f).inverse();
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iInvScale = 1.f / iScale;
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}
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bool ModelInstance::intersectRay(const G3D::Ray& pRay, float& pMaxDist, bool pStopAtFirstHit) const
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{
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if (!iModel)
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{
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#ifdef VMAP_DEBUG
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DEBUG_LOG("<object not loaded>");
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#endif
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return false;
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}
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float time = pRay.intersectionTime(iBound);
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if (time == G3D::inf())
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{
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#ifdef VMAP_DEBUG
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DEBUG_LOG("Ray does not hit '%s'", name.c_str());
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#endif
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return false;
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}
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// child bounds are defined in object space:
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Vector3 p = iInvRot * (pRay.origin() - iPos) * iInvScale;
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Ray modRay(p, iInvRot * pRay.direction());
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float distance = pMaxDist * iInvScale;
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bool hit = iModel->IntersectRay(modRay, distance, pStopAtFirstHit);
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if (hit)
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{
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distance *= iScale;
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pMaxDist = distance;
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}
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return hit;
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}
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void ModelInstance::GetAreaInfo(const G3D::Vector3& p, AreaInfo& info) const
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{
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if (!iModel)
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{
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return;
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}
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// M2 files don't contain area info, only WMO files
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if (flags & MOD_M2)
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{
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return;
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}
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if (!iBound.contains(p))
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{
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return;
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}
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// child bounds are defined in object space:
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Vector3 pModel = iInvRot * (p - iPos) * iInvScale;
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Vector3 zDirModel = iInvRot * Vector3(0.f, 0.f, -1.f);
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float zDist;
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if (iModel->GetAreaInfo(pModel, zDirModel, zDist, info))
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{
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Vector3 modelGround = pModel + zDist * zDirModel;
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// Transform back to world space. Note that:
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// Mat * vec == vec * Mat.transpose()
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// and for rotation matrices: Mat.inverse() == Mat.transpose()
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float world_Z = ((modelGround * iInvRot) * iScale + iPos).z;
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if (info.ground_Z < world_Z)
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{
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info.ground_Z = world_Z;
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info.adtId = adtId;
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}
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}
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}
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bool ModelInstance::GetLocationInfo(const G3D::Vector3& p, LocationInfo& info) const
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{
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if (!iModel)
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{
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return false;
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}
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// M2 files don't contain area info, only WMO files
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if (flags & MOD_M2)
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{
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return false;
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}
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if (!iBound.contains(p))
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{
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return false;
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}
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// child bounds are defined in object space:
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Vector3 pModel = iInvRot * (p - iPos) * iInvScale;
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Vector3 zDirModel = iInvRot * Vector3(0.f, 0.f, -1.f);
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float zDist;
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if (iModel->GetLocationInfo(pModel, zDirModel, zDist, info))
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{
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Vector3 modelGround = pModel + zDist * zDirModel;
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// Transform back to world space. Note that:
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// Mat * vec == vec * Mat.transpose()
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// and for rotation matrices: Mat.inverse() == Mat.transpose()
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float world_Z = ((modelGround * iInvRot) * iScale + iPos).z;
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if (info.ground_Z < world_Z) // hm...could it be handled automatically with zDist at intersection?
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{
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info.ground_Z = world_Z;
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info.hitInstance = this;
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return true;
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}
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}
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return false;
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}
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bool ModelInstance::GetLiquidLevel(const G3D::Vector3& p, LocationInfo& info, float& liqHeight) const
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{
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// child bounds are defined in object space:
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Vector3 pModel = iInvRot * (p - iPos) * iInvScale;
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// Vector3 zDirModel = iInvRot * Vector3(0.f, 0.f, -1.f);
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float zLevel;
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if (info.hitModel->GetLiquidLevel(pModel, zLevel))
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{
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// calculate world height (zDist in model coords):
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// despite making little sense, there ARE some (slightly) tilted WMOs...
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// we can only determine liquid height in LOCAL z-direction (heightmap data),
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// so with increasing tilt, liquid calculation gets increasingly wrong...not my fault, really :p
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liqHeight = (zLevel - pModel.z) * iScale + p.z;
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return true;
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}
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return false;
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}
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bool ModelSpawn::readFromFile(FILE* rf, ModelSpawn& spawn)
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{
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uint32 check = 0, nameLen;
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check += fread(&spawn.flags, sizeof(uint32), 1, rf);
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// EoF?
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if (!check)
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{
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if (ferror(rf))
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{
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ERROR_LOG("Error reading ModelSpawn!");
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}
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return false;
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}
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check += fread(&spawn.adtId, sizeof(uint16), 1, rf);
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check += fread(&spawn.ID, sizeof(uint32), 1, rf);
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check += fread(&spawn.iPos, sizeof(float), 3, rf);
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check += fread(&spawn.iRot, sizeof(float), 3, rf);
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check += fread(&spawn.iScale, sizeof(float), 1, rf);
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bool has_bound = (spawn.flags & MOD_HAS_BOUND);
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if (has_bound) // only WMOs have bound in MPQ, only available after computation
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{
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Vector3 bLow, bHigh;
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check += fread(&bLow, sizeof(float), 3, rf);
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check += fread(&bHigh, sizeof(float), 3, rf);
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spawn.iBound = G3D::AABox(bLow, bHigh);
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}
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check += fread(&nameLen, sizeof(uint32), 1, rf);
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if (check != uint32(has_bound ? 17 : 11))
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{
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ERROR_LOG("Error reading ModelSpawn!");
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return false;
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}
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char nameBuff[500];
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if (nameLen > 500) // file names should never be that long, must be file error
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{
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ERROR_LOG("Error reading ModelSpawn, file name too long!");
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return false;
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}
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check = fread(nameBuff, sizeof(char), nameLen, rf);
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if (check != nameLen)
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{
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ERROR_LOG("Error reading name string of ModelSpawn!");
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return false;
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}
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spawn.name = std::string(nameBuff, nameLen);
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return true;
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}
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bool ModelSpawn::writeToFile(FILE* wf, const ModelSpawn& spawn)
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{
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uint32 check = 0;
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check += fwrite(&spawn.flags, sizeof(uint32), 1, wf);
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check += fwrite(&spawn.adtId, sizeof(uint16), 1, wf);
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check += fwrite(&spawn.ID, sizeof(uint32), 1, wf);
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check += fwrite(&spawn.iPos, sizeof(float), 3, wf);
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check += fwrite(&spawn.iRot, sizeof(float), 3, wf);
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check += fwrite(&spawn.iScale, sizeof(float), 1, wf);
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bool has_bound = (spawn.flags & MOD_HAS_BOUND);
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if (has_bound) // only WMOs have bound in MPQ, only available after computation
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{
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check += fwrite(&spawn.iBound.low(), sizeof(float), 3, wf);
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check += fwrite(&spawn.iBound.high(), sizeof(float), 3, wf);
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}
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uint32 nameLen = spawn.name.length();
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check += fwrite(&nameLen, sizeof(uint32), 1, wf);
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if (check != uint32(has_bound ? 17 : 11))
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{
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return false;
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}
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check = fwrite(spawn.name.c_str(), sizeof(char), nameLen, wf);
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if (check != nameLen)
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{
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return false;
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}
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return true;
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}
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}
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