mirror of
https://github.com/azerothcore/azerothcore-wotlk.git
synced 2025-12-05 18:20:24 -08:00
501 lines
18 KiB
C++
501 lines
18 KiB
C++
/*
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* This file is part of the AzerothCore Project. See AUTHORS file for Copyright information
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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, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "MapTree.h"
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#include "Errors.h"
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#include "Log.h"
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#include "Metric.h"
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#include "ModelInstance.h"
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#include "VMapDefinitions.h"
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#include "VMapMgr2.h"
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#include <iomanip>
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#include <limits>
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#include <sstream>
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#include <string>
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using G3D::Vector3;
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namespace VMAP
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{
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class MapRayCallback
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{
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public:
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MapRayCallback(ModelInstance* val, ModelIgnoreFlags ignoreFlags): prims(val), flags(ignoreFlags), hit(false) { }
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bool operator()(const G3D::Ray& ray, uint32 entry, float& distance, bool StopAtFirstHit)
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{
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bool result = prims[entry].intersectRay(ray, distance, StopAtFirstHit, flags);
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if (result)
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{
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hit = true;
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}
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return result;
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}
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bool didHit() { return hit; }
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protected:
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ModelInstance* prims;
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ModelIgnoreFlags flags;
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bool hit;
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};
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class LocationInfoCallback
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{
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public:
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LocationInfoCallback(ModelInstance* val, LocationInfo& info): prims(val), locInfo(info), result(false) {}
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void operator()(const Vector3& point, uint32 entry)
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{
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#if defined(VMAP_DEBUG)
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LOG_DEBUG("maps", "LocationInfoCallback: trying to intersect '{}'", prims[entry].name);
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#endif
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if (prims[entry].GetLocationInfo(point, locInfo))
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{
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result = true;
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}
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}
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ModelInstance* prims;
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LocationInfo& locInfo;
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bool result;
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};
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//=========================================================
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std::string StaticMapTree::getTileFileName(uint32 mapID, uint32 tileX, uint32 tileY)
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{
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std::stringstream tilefilename;
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tilefilename.fill('0');
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tilefilename << std::setw(3) << mapID << '_';
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//tilefilename << std::setw(2) << tileX << '_' << std::setw(2) << tileY << ".vmtile";
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tilefilename << std::setw(2) << tileY << '_' << std::setw(2) << tileX << ".vmtile";
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return tilefilename.str();
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}
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bool StaticMapTree::GetLocationInfo(const Vector3& pos, LocationInfo& info) const
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{
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LocationInfoCallback intersectionCallBack(iTreeValues, info);
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iTree.intersectPoint(pos, intersectionCallBack);
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return intersectionCallBack.result;
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}
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StaticMapTree::StaticMapTree(uint32 mapID, const std::string& basePath)
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: iMapID(mapID), iIsTiled(false), iTreeValues(0), iBasePath(basePath)
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{
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if (iBasePath.length() > 0 && iBasePath[iBasePath.length() - 1] != '/' && iBasePath[iBasePath.length() - 1] != '\\')
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{
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iBasePath.push_back('/');
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}
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}
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//=========================================================
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//! Make sure to call unloadMap() to unregister acquired model references before destroying
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StaticMapTree::~StaticMapTree()
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{
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delete[] iTreeValues;
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}
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//=========================================================
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/**
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If intersection is found within pMaxDist, sets pMaxDist to intersection distance and returns true.
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Else, pMaxDist is not modified and returns false;
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*/
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bool StaticMapTree::GetIntersectionTime(const G3D::Ray& pRay, float& pMaxDist, bool StopAtFirstHit, ModelIgnoreFlags ignoreFlags) const
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{
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float distance = pMaxDist;
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MapRayCallback intersectionCallBack(iTreeValues, ignoreFlags);
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iTree.intersectRay(pRay, intersectionCallBack, distance, StopAtFirstHit);
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if (intersectionCallBack.didHit())
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{
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pMaxDist = distance;
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}
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return intersectionCallBack.didHit();
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}
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//=========================================================
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bool StaticMapTree::isInLineOfSight(const Vector3& pos1, const Vector3& pos2, ModelIgnoreFlags ignoreFlags) const
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{
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float maxDist = (pos2 - pos1).magnitude();
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// return false if distance is over max float, in case of cheater teleporting to the end of the universe
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if (maxDist == std::numeric_limits<float>::max() || !std::isfinite(maxDist))
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{
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return false;
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}
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// valid map coords should *never ever* produce float overflow, but this would produce NaNs too
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ASSERT(maxDist < std::numeric_limits<float>::max());
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// prevent NaN values which can cause BIH intersection to enter infinite loop
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if (maxDist < 1e-10f)
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{
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return true;
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}
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// direction with length of 1
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G3D::Ray ray = G3D::Ray::fromOriginAndDirection(pos1, (pos2 - pos1) / maxDist);
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return !GetIntersectionTime(ray, maxDist, true, ignoreFlags);
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}
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//=========================================================
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/**
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When moving from pos1 to pos2 check if we hit an object. Return true and the position if we hit one
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Return the hit pos or the original dest pos
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*/
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bool StaticMapTree::GetObjectHitPos(const Vector3& pPos1, const Vector3& pPos2, Vector3& pResultHitPos, float pModifyDist) const
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{
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bool result = false;
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float maxDist = (pPos2 - pPos1).magnitude();
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// valid map coords should *never ever* produce float overflow, but this would produce NaNs too
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ASSERT(maxDist < std::numeric_limits<float>::max());
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// prevent NaN values which can cause BIH intersection to enter infinite loop
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if (maxDist < 1e-10f)
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{
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pResultHitPos = pPos2;
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return false;
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}
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Vector3 dir = (pPos2 - pPos1) / maxDist; // direction with length of 1
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G3D::Ray ray(pPos1, dir);
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float dist = maxDist;
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if (GetIntersectionTime(ray, dist, false, ModelIgnoreFlags::Nothing))
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{
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pResultHitPos = pPos1 + dir * dist;
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if (pModifyDist < 0)
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{
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if ((pResultHitPos - pPos1).magnitude() > -pModifyDist)
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{
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pResultHitPos = pResultHitPos + dir * pModifyDist;
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}
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else
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{
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pResultHitPos = pPos1;
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}
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}
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else
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{
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pResultHitPos = pResultHitPos + dir * pModifyDist;
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}
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result = true;
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}
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else
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{
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pResultHitPos = pPos2;
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result = false;
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}
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return result;
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}
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//=========================================================
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float StaticMapTree::getHeight(const Vector3& pPos, float maxSearchDist) const
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{
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float height = G3D::finf();
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Vector3 dir = Vector3(0, 0, -1);
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G3D::Ray ray(pPos, dir); // direction with length of 1
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float maxDist = maxSearchDist;
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if (GetIntersectionTime(ray, maxDist, false, ModelIgnoreFlags::Nothing))
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{
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height = pPos.z - maxDist;
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}
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return (height);
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}
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//=========================================================
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LoadResult StaticMapTree::CanLoadMap(const std::string& vmapPath, uint32 mapID, uint32 tileX, uint32 tileY)
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{
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std::string basePath = vmapPath;
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if (basePath.length() > 0 && basePath[basePath.length() - 1] != '/' && basePath[basePath.length() - 1] != '\\')
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{
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basePath.push_back('/');
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}
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std::string fullname = basePath + VMapMgr2::getMapFileName(mapID);
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LoadResult result = LoadResult::Success;
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FILE* rf = fopen(fullname.c_str(), "rb");
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if (!rf)
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{
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return LoadResult::FileNotFound;
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}
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char tiled;
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char chunk[8];
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if (!readChunk(rf, chunk, VMAP_MAGIC, 8) || fread(&tiled, sizeof(char), 1, rf) != 1)
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{
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fclose(rf);
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return LoadResult::VersionMismatch;
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}
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if (tiled)
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{
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std::string tilefile = basePath + getTileFileName(mapID, tileX, tileY);
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FILE* tf = fopen(tilefile.c_str(), "rb");
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if (!tf)
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{
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result = LoadResult::FileNotFound;
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}
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else
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{
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if (!readChunk(tf, chunk, VMAP_MAGIC, 8))
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{
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result = LoadResult::VersionMismatch;
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}
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fclose(tf);
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}
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}
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fclose(rf);
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return result;
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}
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//=========================================================
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bool StaticMapTree::InitMap(const std::string& fname, VMapMgr2* vm)
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{
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//VMAP_DEBUG_LOG(LOG_FILTER_MAPS, "StaticMapTree::InitMap() : initializing StaticMapTree '{}'", fname);
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bool success = false;
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std::string fullname = iBasePath + fname;
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FILE* rf = fopen(fullname.c_str(), "rb");
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if (!rf)
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{
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return false;
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}
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char chunk[8];
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char tiled = '\0';
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if (readChunk(rf, chunk, VMAP_MAGIC, 8) && fread(&tiled, sizeof(char), 1, rf) == 1 &&
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readChunk(rf, chunk, "NODE", 4) && iTree.readFromFile(rf))
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{
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iNTreeValues = iTree.primCount();
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iTreeValues = new ModelInstance[iNTreeValues];
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success = readChunk(rf, chunk, "GOBJ", 4);
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}
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iIsTiled = bool(tiled);
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// global model spawns
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// only non-tiled maps have them, and if so exactly one (so far at least...)
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ModelSpawn spawn;
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#ifdef VMAP_DEBUG
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//LOG_DEBUG(LOG_FILTER_MAPS, "StaticMapTree::InitMap() : map isTiled: {}", static_cast<uint32>(iIsTiled));
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#endif
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if (!iIsTiled && ModelSpawn::readFromFile(rf, spawn))
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{
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WorldModel* model = vm->acquireModelInstance(iBasePath, spawn.name, spawn.flags);
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//VMAP_DEBUG_LOG(LOG_FILTER_MAPS, "StaticMapTree::InitMap() : loading {}", spawn.name);
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if (model)
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{
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// assume that global model always is the first and only tree value (could be improved...)
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iTreeValues[0] = ModelInstance(spawn, model);
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iLoadedSpawns[0] = 1;
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}
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else
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{
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success = false;
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//VMAP_ERROR_LOG(LOG_FILTER_GENERAL, "StaticMapTree::InitMap() : could not acquire WorldModel pointer for '{}'", spawn.name);
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}
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}
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fclose(rf);
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return success;
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}
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//=========================================================
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void StaticMapTree::UnloadMap(VMapMgr2* vm)
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{
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for (loadedSpawnMap::iterator i = iLoadedSpawns.begin(); i != iLoadedSpawns.end(); ++i)
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{
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iTreeValues[i->first].setUnloaded();
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for (uint32 refCount = 0; refCount < i->second; ++refCount)
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{
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vm->releaseModelInstance(iTreeValues[i->first].name);
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}
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}
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iLoadedSpawns.clear();
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iLoadedTiles.clear();
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}
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//=========================================================
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bool StaticMapTree::LoadMapTile(uint32 tileX, uint32 tileY, VMapMgr2* vm)
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{
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if (!iIsTiled)
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{
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// currently, core creates grids for all maps, whether it has terrain tiles or not
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// so we need "fake" tile loads to know when we can unload map geometry
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iLoadedTiles[packTileID(tileX, tileY)] = false;
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return true;
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}
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if (!iTreeValues)
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{
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LOG_ERROR("maps", "StaticMapTree::LoadMapTile() : tree has not been initialized [{}, {}]", tileX, tileY);
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return false;
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}
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bool result = true;
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std::string tilefile = iBasePath + getTileFileName(iMapID, tileX, tileY);
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FILE* tf = fopen(tilefile.c_str(), "rb");
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if (tf)
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{
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char chunk[8];
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if (!readChunk(tf, chunk, VMAP_MAGIC, 8))
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{
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result = false;
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}
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uint32 numSpawns = 0;
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if (result && fread(&numSpawns, sizeof(uint32), 1, tf) != 1)
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{
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result = false;
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}
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for (uint32 i = 0; i < numSpawns && result; ++i)
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{
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// read model spawns
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ModelSpawn spawn;
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result = ModelSpawn::readFromFile(tf, spawn);
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if (result)
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{
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// acquire model instance
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WorldModel* model = vm->acquireModelInstance(iBasePath, spawn.name, spawn.flags);
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if (!model)
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{
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LOG_ERROR("maps", "StaticMapTree::LoadMapTile() : could not acquire WorldModel pointer [{}, {}]", tileX, tileY);
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}
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// update tree
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uint32 referencedVal;
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if (fread(&referencedVal, sizeof(uint32), 1, tf) == 1)
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{
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if (!iLoadedSpawns.count(referencedVal))
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{
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#if defined(VMAP_DEBUG)
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if (referencedVal > iNTreeValues)
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{
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LOG_DEBUG("maps", "StaticMapTree::LoadMapTile() : invalid tree element ({}/{})", referencedVal, iNTreeValues);
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continue;
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}
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#endif
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iTreeValues[referencedVal] = ModelInstance(spawn, model);
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iLoadedSpawns[referencedVal] = 1;
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}
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else
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{
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++iLoadedSpawns[referencedVal];
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#if defined(VMAP_DEBUG)
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if (iTreeValues[referencedVal].ID != spawn.ID)
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{
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LOG_DEBUG("maps", "StaticMapTree::LoadMapTile() : trying to load wrong spawn in node");
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}
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else if (iTreeValues[referencedVal].name != spawn.name)
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{
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LOG_DEBUG("maps", "StaticMapTree::LoadMapTile() : name collision on GUID={}", spawn.ID);
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}
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#endif
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}
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}
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else
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{
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result = false;
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}
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}
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}
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iLoadedTiles[packTileID(tileX, tileY)] = true;
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fclose(tf);
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}
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else
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{
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iLoadedTiles[packTileID(tileX, tileY)] = false;
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}
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METRIC_EVENT("map_events", "LoadMapTile",
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"Map: " + std::to_string(iMapID) + " TileX: " + std::to_string(tileX) + " TileY: " + std::to_string(tileY));
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return result;
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}
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//=========================================================
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void StaticMapTree::UnloadMapTile(uint32 tileX, uint32 tileY, VMapMgr2* vm)
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{
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uint32 tileID = packTileID(tileX, tileY);
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loadedTileMap::iterator tile = iLoadedTiles.find(tileID);
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if (tile == iLoadedTiles.end())
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{
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LOG_ERROR("maps", "StaticMapTree::UnloadMapTile() : trying to unload non-loaded tile - Map:{} X:{} Y:{}", iMapID, tileX, tileY);
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return;
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}
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if (tile->second) // file associated with tile
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{
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std::string tilefile = iBasePath + getTileFileName(iMapID, tileX, tileY);
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FILE* tf = fopen(tilefile.c_str(), "rb");
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if (tf)
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{
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bool result = true;
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char chunk[8];
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if (!readChunk(tf, chunk, VMAP_MAGIC, 8))
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{
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result = false;
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}
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uint32 numSpawns;
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if (fread(&numSpawns, sizeof(uint32), 1, tf) != 1)
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{
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result = false;
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}
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for (uint32 i = 0; i < numSpawns && result; ++i)
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{
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// read model spawns
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ModelSpawn spawn;
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result = ModelSpawn::readFromFile(tf, spawn);
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if (result)
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{
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// release model instance
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vm->releaseModelInstance(spawn.name);
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// update tree
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uint32 referencedNode;
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if (fread(&referencedNode, sizeof(uint32), 1, tf) != 1)
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{
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result = false;
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}
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else
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{
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if (!iLoadedSpawns.count(referencedNode))
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{
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LOG_ERROR("maps", "StaticMapTree::UnloadMapTile() : trying to unload non-referenced model '{}' (ID:{})", spawn.name, spawn.ID);
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}
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else if (--iLoadedSpawns[referencedNode] == 0)
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{
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iTreeValues[referencedNode].setUnloaded();
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iLoadedSpawns.erase(referencedNode);
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}
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}
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}
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}
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fclose(tf);
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}
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}
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iLoadedTiles.erase(tile);
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METRIC_EVENT("map_events", "UnloadMapTile",
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"Map: " + std::to_string(iMapID) + " TileX: " + std::to_string(tileX) + " TileY: " + std::to_string(tileY));
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}
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void StaticMapTree::GetModelInstances(ModelInstance*& models, uint32& count)
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{
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models = iTreeValues;
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count = iNTreeValues;
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}
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}
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