GameObjectModel.cpp

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/*
 * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
 *
 * 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 "VMapFactory.h"
#include "VMapManager2.h"
#include "VMapDefinitions.h"
#include "WorldModel.h"
#include "GameObjectModel.h"
#include "Log.h"
#include "MapTree.h"
#include "Memory.h"
#include "Timer.h"
#include <G3D/Quat.h>
 
using G3D::Vector3;
using G3D::Ray;
using G3D::AABox;
 
struct GameobjectModelData
{
 GameobjectModelData(char const* name_, uint32 nameLength, Vector3 const& lowBound, Vector3 const& highBound) :
 bound(lowBound, highBound), name(name_, nameLength) { }
 
 AABox bound;
 std::string name;
};
 
typedef std::unordered_map<uint32, GameobjectModelData> ModelList;
ModelList model_list;
 
bool LoadGameObjectModelList(std::string const& dataPath)
{
 uint32 oldMSTime = getMSTime();
 
 auto model_list_file = Trinity::make_unique_ptr_with_deleter(fopen((dataPath + "vmaps/" + VMAP::GAMEOBJECT_MODELS).c_str(), "rb"), &::fclose);
 if (!model_list_file)
 {
 TC_LOG_ERROR("misc", "Unable to open '{}' file.", VMAP::GAMEOBJECT_MODELS);
 return false;
 }
 
 char magic[8];
 if (fread(magic, 1, 8, model_list_file.get()) != 8
 || memcmp(magic, VMAP::VMAP_MAGIC, 8) != 0)
 {
 TC_LOG_ERROR("misc", "File '{}' has wrong header, expected {}.", VMAP::GAMEOBJECT_MODELS, VMAP::VMAP_MAGIC);
 return false;
 }
 
 uint32 name_length, displayId;
 char buff[500];
 while (true)
 {
 Vector3 v1, v2;
 if (fread(&displayId, sizeof(uint32), 1, model_list_file.get()) != 1)
 if (feof(model_list_file.get())) // EOF flag is only set after failed reading attempt
 break;
 
 if (fread(&name_length, sizeof(uint32), 1, model_list_file.get()) != 1
 || name_length >= sizeof(buff)
 || fread(&buff, sizeof(char), name_length, model_list_file.get()) != name_length
 || fread(&v1, sizeof(Vector3), 1, model_list_file.get()) != 1
 || fread(&v2, sizeof(Vector3), 1, model_list_file.get()) != 1)
 {
 TC_LOG_ERROR("misc", "File '{}' seems to be corrupted!", VMAP::GAMEOBJECT_MODELS);
 break;
 }
 
 if (v1.isNaN() || v2.isNaN())
 {
 TC_LOG_ERROR("misc", "File '{}' Model '{}' has invalid v1{} v2{} values!", VMAP::GAMEOBJECT_MODELS, std::string(buff, name_length), v1.toString(), v2.toString());
 continue;
 }
 
 model_list.emplace(std::piecewise_construct, std::forward_as_tuple(displayId), std::forward_as_tuple(&buff[0], name_length, v1, v2));
 }
 
 TC_LOG_INFO("server.loading", ">> Loaded {} GameObject models in {} ms", uint32(model_list.size()), GetMSTimeDiffToNow(oldMSTime));
 return true;
}
 
GameObjectModel::~GameObjectModel()
{
 if (iModel)
 VMAP::VMapFactory::createOrGetVMapManager()->releaseModelInstance(iModel->GetName());
}
 
bool GameObjectModel::initialize(std::unique_ptr<GameObjectModelOwnerBase> modelOwner, std::string const& dataPath)
{
 ModelList::const_iterator it = model_list.find(modelOwner->GetDisplayId());
 if (it == model_list.end())
 return false;
 
 G3D::AABox mdl_box(it->second.bound);
 // ignore models with no bounds
 if (mdl_box == G3D::AABox::zero())
 {
 TC_LOG_ERROR("misc", "GameObject model {} has zero bounds, loading skipped", it->second.name);
 return false;
 }
 
 iModel = VMAP::VMapFactory::createOrGetVMapManager()->acquireModelInstance(dataPath + "vmaps/", it->second.name);
 
 if (!iModel)
 return false;
 
 iPos = modelOwner->GetPosition();
 iScale = modelOwner->GetScale();
 iInvScale = 1.f / iScale;
 
 G3D::Matrix3 iRotation = modelOwner->GetRotation().toRotationMatrix();
 iInvRot = iRotation.inverse();
 // transform bounding box:
 mdl_box = AABox(mdl_box.low() * iScale, mdl_box.high() * iScale);
 AABox rotated_bounds;
 for (int i = 0; i < 8; ++i)
 rotated_bounds.merge(iRotation * mdl_box.corner(i));
 
 iBound = rotated_bounds + iPos;
#ifdef SPAWN_CORNERS
 // test:
 for (int i = 0; i < 8; ++i)
 {
 Vector3 pos(iBound.corner(i));
 modelOwner->DebugVisualizeCorner(pos);
 }
#endif
 
 owner = std::move(modelOwner);
 return true;
}
 
GameObjectModel* GameObjectModel::Create(std::unique_ptr<GameObjectModelOwnerBase> modelOwner, std::string const& dataPath)
{
 GameObjectModel* mdl = new GameObjectModel();
 if (!mdl->initialize(std::move(modelOwner), dataPath))
 {
 delete mdl;
 return nullptr;
 }
 
 return mdl;
}
 
bool GameObjectModel::isMapObject() const
{
 return !iModel->IsM2();
}
 
bool GameObjectModel::intersectRay(G3D::Ray const& ray, float& maxDist, bool stopAtFirstHit, PhaseShift const& phaseShift, VMAP::ModelIgnoreFlags ignoreFlags) const
{
 if (!isCollisionEnabled() || !owner->IsSpawned())
 return false;
 
 if (!owner->IsInPhase(phaseShift))
 return false;
 
 float time = ray.intersectionTime(iBound);
 if (time == G3D::finf())
 return false;
 
 // child bounds are defined in object space:
 Vector3 p = iInvRot * (ray.origin() - iPos) * iInvScale;
 Ray modRay(p, iInvRot * ray.direction());
 float distance = maxDist * iInvScale;
 bool hit = iModel->IntersectRay(modRay, distance, stopAtFirstHit, ignoreFlags);
 if (hit)
 {
 distance *= iScale;
 maxDist = distance;
 }
 return hit;
}
 
bool GameObjectModel::GetLocationInfo(G3D::Vector3 const& point, VMAP::LocationInfo& info, PhaseShift const& phaseShift) const
{
 if (!isCollisionEnabled() || !owner->IsSpawned() || !isMapObject())
 return false;
 
 if (!owner->IsInPhase(phaseShift))
 return false;
 
 if (!iBound.contains(point))
 return false;
 
 // child bounds are defined in object space:
 Vector3 pModel = iInvRot * (point - iPos) * iInvScale;
 Vector3 zDirModel = iInvRot * Vector3(0.f, 0.f, -1.f);
 float zDist;
 
 VMAP::GroupLocationInfo groupInfo;
 if (iModel->GetLocationInfo(pModel, zDirModel, zDist, groupInfo))
 {
 Vector3 modelGround = pModel + zDist * zDirModel;
 float world_Z = ((modelGround * iInvRot) * iScale + iPos).z;
 if (info.ground_Z < world_Z)
 {
 info.ground_Z = world_Z;
 return true;
 }
 }
 
 return false;
}
 
bool GameObjectModel::GetLiquidLevel(G3D::Vector3 const& point, VMAP::LocationInfo& info, float& liqHeight) const
{
 // child bounds are defined in object space:
 Vector3 pModel = iInvRot * (point - 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 GameObjectModel::UpdatePosition()
{
 if (!iModel)
 return false;
 
 ModelList::const_iterator it = model_list.find(owner->GetDisplayId());
 if (it == model_list.end())
 return false;
 
 G3D::AABox mdl_box(it->second.bound);
 // ignore models with no bounds
 if (mdl_box == G3D::AABox::zero())
 {
 TC_LOG_ERROR("misc", "GameObject model {} has zero bounds, loading skipped", it->second.name);
 return false;
 }
 
 iPos = owner->GetPosition();
 
 G3D::Matrix3 iRotation = owner->GetRotation().toRotationMatrix();
 iInvRot = iRotation.inverse();
 // transform bounding box:
 mdl_box = AABox(mdl_box.low() * iScale, mdl_box.high() * iScale);
 AABox rotated_bounds;
 for (int i = 0; i < 8; ++i)
 rotated_bounds.merge(iRotation * mdl_box.corner(i));
 
 iBound = rotated_bounds + iPos;
#ifdef SPAWN_CORNERS
 // test:
 for (int i = 0; i < 8; ++i)
 {
 Vector3 pos(iBound.corner(i));
 owner->DebugVisualizeCorner(pos);
 }
#endif
 
 return true;
}