mirror of
https://github.com/mod-playerbots/azerothcore-wotlk.git
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Using TC structure allowing easier patches importing
This commit is contained in:
Yehonal
465
src/common/Collision/Maps/MapTree.cpp
Normal file
465
src/common/Collision/Maps/MapTree.cpp
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@@ -0,0 +1,465 @@
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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 "MapTree.h"
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#include "ModelInstance.h"
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#include "VMapManager2.h"
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#include "VMapDefinitions.h"
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#include "Log.h"
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#include "Errors.h"
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#include <string>
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#include <sstream>
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#include <iomanip>
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#include <limits>
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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): prims(val), 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);
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if (result)
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hit = true;
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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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bool hit;
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};
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class AreaInfoCallback
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{
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public:
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AreaInfoCallback(ModelInstance* val): prims(val) {}
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void operator()(const Vector3& point, uint32 entry)
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{
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#if defined(ENABLE_EXTRAS) && defined(ENABLE_EXTRA_LOGS) && defined(VMAP_DEBUG)
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sLog->outDebug(LOG_FILTER_MAPS, "AreaInfoCallback: trying to intersect '%s'", prims[entry].name.c_str());
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#endif
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prims[entry].intersectPoint(point, aInfo);
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}
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ModelInstance* prims;
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AreaInfo aInfo;
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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(ENABLE_EXTRAS) && defined(ENABLE_EXTRA_LOGS) && defined(VMAP_DEBUG)
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sLog->outDebug(LOG_FILTER_MAPS, "LocationInfoCallback: trying to intersect '%s'", prims[entry].name.c_str());
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#endif
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if (prims[entry].GetLocationInfo(point, locInfo))
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result = true;
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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::getAreaInfo(Vector3 &pos, uint32 &flags, int32 &adtId, int32 &rootId, int32 &groupId) const
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{
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AreaInfoCallback intersectionCallBack(iTreeValues);
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iTree.intersectPoint(pos, intersectionCallBack);
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if (intersectionCallBack.aInfo.result)
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{
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flags = intersectionCallBack.aInfo.flags;
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adtId = intersectionCallBack.aInfo.adtId;
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rootId = intersectionCallBack.aInfo.rootId;
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groupId = intersectionCallBack.aInfo.groupId;
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pos.z = intersectionCallBack.aInfo.ground_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 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) const
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{
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float distance = pMaxDist;
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MapRayCallback intersectionCallBack(iTreeValues);
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iTree.intersectRay(pRay, intersectionCallBack, distance, StopAtFirstHit);
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if (intersectionCallBack.didHit())
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pMaxDist = distance;
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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) 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() || !myisfinite(maxDist))
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return false;
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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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return true;
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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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if (getIntersectionTime(ray, maxDist, true))
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return false;
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return true;
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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))
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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::inf();
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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))
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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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bool 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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basePath.push_back('/');
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std::string fullname = basePath + VMapManager2::getMapFileName(mapID);
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bool success = true;
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FILE* rf = fopen(fullname.c_str(), "rb");
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if (!rf)
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return false;
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// TODO: check magic number when implemented...
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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 false;
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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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success = false;
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else
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{
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if (!readChunk(tf, chunk, VMAP_MAGIC, 8))
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success = false;
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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 success;
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}
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//=========================================================
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bool StaticMapTree::InitMap(const std::string &fname, VMapManager2* vm)
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{
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//VMAP_DEBUG_LOG(LOG_FILTER_MAPS, "StaticMapTree::InitMap() : initializing StaticMapTree '%s'", fname.c_str());
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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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return false;
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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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//TC_LOG_DEBUG(LOG_FILTER_MAPS, "StaticMapTree::InitMap() : map isTiled: %u", 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);
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//VMAP_DEBUG_LOG(LOG_FILTER_MAPS, "StaticMapTree::InitMap() : loading %s", spawn.name.c_str());
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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 '%s'", spawn.name.c_str());
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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(VMapManager2* 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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vm->releaseModelInstance(iTreeValues[i->first].name);
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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, VMapManager2* 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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sLog->outError("StaticMapTree::LoadMapTile() : tree has not been initialized [%u, %u]", 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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result = false;
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uint32 numSpawns = 0;
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if (result && fread(&numSpawns, sizeof(uint32), 1, tf) != 1)
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result = false;
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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);
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if (!model)
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sLog->outError("StaticMapTree::LoadMapTile() : could not acquire WorldModel pointer [%u, %u]", tileX, tileY);
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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(ENABLE_EXTRAS) && defined(ENABLE_EXTRA_LOGS) && defined(VMAP_DEBUG)
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if (referencedVal > iNTreeValues)
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{
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sLog->outDebug(LOG_FILTER_MAPS, "StaticMapTree::LoadMapTile() : invalid tree element (%u/%u)", 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(ENABLE_EXTRAS) && defined(ENABLE_EXTRA_LOGS) && defined(VMAP_DEBUG)
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if (iTreeValues[referencedVal].ID != spawn.ID)
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sLog->outDebug(LOG_FILTER_MAPS, "StaticMapTree::LoadMapTile() : trying to load wrong spawn in node");
|
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else if (iTreeValues[referencedVal].name != spawn.name)
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sLog->outDebug(LOG_FILTER_MAPS, "StaticMapTree::LoadMapTile() : name collision on GUID=%u", spawn.ID);
|
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#endif
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}
|
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}
|
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else
|
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result = false;
|
||||
}
|
||||
}
|
||||
iLoadedTiles[packTileID(tileX, tileY)] = true;
|
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fclose(tf);
|
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}
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else
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iLoadedTiles[packTileID(tileX, tileY)] = false;
|
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return result;
|
||||
}
|
||||
|
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//=========================================================
|
||||
|
||||
void StaticMapTree::UnloadMapTile(uint32 tileX, uint32 tileY, VMapManager2* vm)
|
||||
{
|
||||
uint32 tileID = packTileID(tileX, tileY);
|
||||
loadedTileMap::iterator tile = iLoadedTiles.find(tileID);
|
||||
if (tile == iLoadedTiles.end())
|
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{
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sLog->outError("StaticMapTree::UnloadMapTile() : trying to unload non-loaded tile - Map:%u X:%u Y:%u", iMapID, tileX, tileY);
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return;
|
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}
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if (tile->second) // file associated with tile
|
||||
{
|
||||
std::string tilefile = iBasePath + getTileFileName(iMapID, tileX, tileY);
|
||||
FILE* tf = fopen(tilefile.c_str(), "rb");
|
||||
if (tf)
|
||||
{
|
||||
bool result=true;
|
||||
char chunk[8];
|
||||
if (!readChunk(tf, chunk, VMAP_MAGIC, 8))
|
||||
result = false;
|
||||
uint32 numSpawns;
|
||||
if (fread(&numSpawns, sizeof(uint32), 1, tf) != 1)
|
||||
result = false;
|
||||
for (uint32 i=0; i<numSpawns && result; ++i)
|
||||
{
|
||||
// read model spawns
|
||||
ModelSpawn spawn;
|
||||
result = ModelSpawn::readFromFile(tf, spawn);
|
||||
if (result)
|
||||
{
|
||||
// release model instance
|
||||
vm->releaseModelInstance(spawn.name);
|
||||
|
||||
// update tree
|
||||
uint32 referencedNode;
|
||||
|
||||
if (fread(&referencedNode, sizeof(uint32), 1, tf) != 1)
|
||||
result = false;
|
||||
else
|
||||
{
|
||||
if (!iLoadedSpawns.count(referencedNode))
|
||||
sLog->outError("StaticMapTree::UnloadMapTile() : trying to unload non-referenced model '%s' (ID:%u)", spawn.name.c_str(), spawn.ID);
|
||||
else if (--iLoadedSpawns[referencedNode] == 0)
|
||||
{
|
||||
iTreeValues[referencedNode].setUnloaded();
|
||||
iLoadedSpawns.erase(referencedNode);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
fclose(tf);
|
||||
}
|
||||
}
|
||||
iLoadedTiles.erase(tile);
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user