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https://github.com/mod-playerbots/azerothcore-wotlk.git
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Project restructuring conforming to the new software layers [PART.1]
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Yehonal
211
modules/worldengine/lib-collision/Models/ModelInstance.cpp
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211
modules/worldengine/lib-collision/Models/ModelInstance.cpp
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/*
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* Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license: http://github.com/azerothcore/azerothcore-wotlk/LICENSE-GPL2
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* Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
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* Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
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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 StopAtFirstHit) const
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{
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if (!iModel)
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{
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//std::cout << "<object not loaded>\n";
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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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// std::cout << "Ray does not hit '" << name << "'\n";
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return false;
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}
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// std::cout << "Ray crosses bound of '" << name << "'\n";
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/* std::cout << "ray from:" << pRay.origin().x << ", " << pRay.origin().y << ", " << pRay.origin().z
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<< " dir:" << pRay.direction().x << ", " << pRay.direction().y << ", " << pRay.direction().z
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<< " t/tmax:" << time << '/' << pMaxDist;
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std::cout << "\nBound lo:" << iBound.low().x << ", " << iBound.low().y << ", " << iBound.low().z << " hi: "
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<< iBound.high().x << ", " << iBound.high().y << ", " << iBound.high().z << std::endl; */
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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, StopAtFirstHit);
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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::intersectPoint(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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#ifdef VMAP_DEBUG
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std::cout << "<object not loaded>\n";
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#endif
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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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return;
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if (!iBound.contains(p))
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return;
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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->IntersectPoint(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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#ifdef VMAP_DEBUG
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std::cout << "<object not loaded>\n";
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#endif
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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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return false;
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if (!iBound.contains(p))
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return false;
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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 zDist;
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if (info.hitModel->GetLiquidLevel(pModel, zDist))
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{
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// calculate world height (zDist in model coords):
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// assume WMO not tilted (wouldn't make much sense anyway)
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liqHeight = zDist * iScale + iPos.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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std::cout << "Error reading ModelSpawn!\n";
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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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std::cout << "Error reading ModelSpawn!\n";
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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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std::cout << "Error reading ModelSpawn, file name too long!\n";
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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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std::cout << "Error reading ModelSpawn!\n";
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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)) return false;
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check = fwrite(spawn.name.c_str(), sizeof(char), nameLen, wf);
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if (check != nameLen) return false;
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return true;
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}
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}
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