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/*
* 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 "ModelInstance.h"
#include "WorldModel.h"
#include "MapTree.h"
#include "VMapDefinitions.h"
using G3D::Vector3;
using G3D::Ray;
namespace VMAP
{
ModelInstance::ModelInstance(const ModelSpawn &spawn, WorldModel *model): ModelSpawn(spawn), iModel(model)
{
iInvRot = G3D::Matrix3::fromEulerAnglesZYX(G3D::pi()*iRot.y/180.f, G3D::pi()*iRot.x/180.f, G3D::pi()*iRot.z/180.f).inverse();
iInvScale = 1.f/iScale;
}
bool ModelInstance::intersectRay(const G3D::Ray& pRay, float& pMaxDist, bool pStopAtFirstHit) const
{
if (!iModel)
{
//std::cout << "<object not loaded>\n";
return false;
}
float time = pRay.intersectionTime(iBound);
if (time == G3D::inf())
{
// std::cout << "Ray does not hit '" << name << "'\n";
return false;
}
// std::cout << "Ray crosses bound of '" << name << "'\n";
/* std::cout << "ray from:" << pRay.origin().x << ", " << pRay.origin().y << ", " << pRay.origin().z
<< " dir:" << pRay.direction().x << ", " << pRay.direction().y << ", " << pRay.direction().z
<< " t/tmax:" << time << "/" << pMaxDist;
std::cout << "\nBound lo:" << iBound.low().x << ", " << iBound.low().y << ", " << iBound.low().z << " hi: "
<< iBound.high().x << ", " << iBound.high().y << ", " << iBound.high().z << std::endl; */
// child bounds are defined in object space:
Vector3 p = iInvRot * (pRay.origin() - iPos) * iInvScale;
Ray modRay(p, iInvRot * pRay.direction());
float distance = pMaxDist * iInvScale;
bool hit = iModel->IntersectRay(modRay, distance, pStopAtFirstHit);
if(hit)
{
distance *= iScale;
pMaxDist = distance;
}
return hit;
}
void ModelInstance::intersectPoint(const G3D::Vector3& p, AreaInfo &info) const
{
if (!iModel)
{
#ifdef VMAP_DEBUG
std::cout << "<object not loaded>\n";
#endif
return;
}
// M2 files don't contain area info, only WMO files
if (flags & MOD_M2)
return;
if (!iBound.contains(p))
return;
// child bounds are defined in object space:
Vector3 pModel = iInvRot * (p - iPos) * iInvScale;
Vector3 zDirModel = iInvRot * Vector3(0.f, 0.f, -1.f);
float zDist;
if (iModel->IntersectPoint(pModel, zDirModel, zDist, info))
{
Vector3 modelGround = pModel + zDist * zDirModel;
// Transform back to world space. Note that:
// Mat * vec == vec * Mat.transpose()
// and for rotation matrices: Mat.inverse() == Mat.transpose()
float world_Z = ((modelGround * iInvRot) * iScale + iPos).z;
if (info.ground_Z < world_Z)
{
info.ground_Z = world_Z;
info.adtId = adtId;
}
}
}
bool ModelInstance::GetLocationInfo(const G3D::Vector3& p, LocationInfo &info) const
{
if (!iModel)
{
#ifdef VMAP_DEBUG
std::cout << "<object not loaded>\n";
#endif
return false;
}
// M2 files don't contain area info, only WMO files
if (flags & MOD_M2)
return false;
if (!iBound.contains(p))
return false;
// child bounds are defined in object space:
Vector3 pModel = iInvRot * (p - iPos) * iInvScale;
Vector3 zDirModel = iInvRot * Vector3(0.f, 0.f, -1.f);
float zDist;
if (iModel->GetLocationInfo(pModel, zDirModel, zDist, info))
{
Vector3 modelGround = pModel + zDist * zDirModel;
// Transform back to world space. Note that:
// Mat * vec == vec * Mat.transpose()
// and for rotation matrices: Mat.inverse() == Mat.transpose()
float world_Z = ((modelGround * iInvRot) * iScale + iPos).z;
if (info.ground_Z < world_Z) // hm...could it be handled automatically with zDist at intersection?
{
info.ground_Z = world_Z;
info.hitInstance = this;
return true;
}
}
return false;
}
bool ModelInstance::GetLiquidLevel(const G3D::Vector3& p, LocationInfo &info, float &liqHeight) const
{
// child bounds are defined in object space:
Vector3 pModel = iInvRot * (p - iPos) * iInvScale;
//Vector3 zDirModel = iInvRot * Vector3(0.f, 0.f, -1.f);
float zDist;
if (info.hitModel->GetLiquidLevel(pModel, zDist))
{
// calculate world height (zDist in model coords):
// assume WMO not tilted (wouldn't make much sense anyway)
liqHeight = zDist * iScale + iPos.z;
return true;
}
return false;
}
bool ModelSpawn::readFromFile(FILE *rf, ModelSpawn &spawn)
{
uint32 check=0, nameLen;
check += fread(&spawn.flags, sizeof(uint32), 1, rf);
// EoF?
if (!check)
{
if (ferror(rf))
std::cout << "Error reading ModelSpawn!\n";
return false;
}
check += fread(&spawn.adtId, sizeof(uint16), 1, rf);
check += fread(&spawn.ID, sizeof(uint32), 1, rf);
check += fread(&spawn.iPos, sizeof(float), 3, rf);
check += fread(&spawn.iRot, sizeof(float), 3, rf);
check += fread(&spawn.iScale, sizeof(float), 1, rf);
bool has_bound = (spawn.flags & MOD_HAS_BOUND);
if (has_bound) // only WMOs have bound in MPQ, only available after computation
{
Vector3 bLow, bHigh;
check += fread(&bLow, sizeof(float), 3, rf);
check += fread(&bHigh, sizeof(float), 3, rf);
spawn.iBound = G3D::AABox(bLow, bHigh);
}
check += fread(&nameLen, sizeof(uint32), 1, rf);
if(check != (has_bound ? 17 : 11))
{
std::cout << "Error reading ModelSpawn!\n";
return false;
}
char nameBuff[500];
if (nameLen>500) // file names should never be that long, must be file error
{
std::cout << "Error reading ModelSpawn, file name too long!\n";
return false;
}
check = fread(nameBuff, sizeof(char), nameLen, rf);
if (check != nameLen)
{
std::cout << "Error reading ModelSpawn!\n";
return false;
}
spawn.name = std::string(nameBuff, nameLen);
return true;
}
bool ModelSpawn::writeToFile(FILE *wf, const ModelSpawn &spawn)
{
uint32 check=0;
check += fwrite(&spawn.flags, sizeof(uint32), 1, wf);
check += fwrite(&spawn.adtId, sizeof(uint16), 1, wf);
check += fwrite(&spawn.ID, sizeof(uint32), 1, wf);
check += fwrite(&spawn.iPos, sizeof(float), 3, wf);
check += fwrite(&spawn.iRot, sizeof(float), 3, wf);
check += fwrite(&spawn.iScale, sizeof(float), 1, wf);
bool has_bound = (spawn.flags & MOD_HAS_BOUND);
if(has_bound) // only WMOs have bound in MPQ, only available after computation
{
check += fwrite(&spawn.iBound.low(), sizeof(float), 3, wf);
check += fwrite(&spawn.iBound.high(), sizeof(float), 3, wf);
}
uint32 nameLen = spawn.name.length();
check += fwrite(&nameLen, sizeof(uint32), 1, wf);
if(check != (has_bound ? 17 : 11)) return false;
check = fwrite(spawn.name.c_str(), sizeof(char), nameLen, wf);
if(check != nameLen) return false;
return true;
}
}
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