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15bb164d72
* Instead coordinates use angle projections to expected pos distance circle. This let do mostly only angle comparison and then speedup checks. * Fixed some long existed bugs in algo and simplify code. Possible more work need.
73 lines
2.8 KiB
C++
73 lines
2.8 KiB
C++
/*
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* Copyright (C) 2005-2011 MaNGOS <http://getmangos.com/>
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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,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _OBJECT_POS_SELECTOR_H
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#define _OBJECT_POS_SELECTOR_H
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#include<Common.h>
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#include<map>
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enum UsedAreaSide { USED_POS_PLUS, USED_POS_MINUS };
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inline UsedAreaSide operator ~(UsedAreaSide side)
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{
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return side == USED_POS_PLUS ? USED_POS_MINUS : USED_POS_PLUS;
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}
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inline float SignOf(UsedAreaSide side)
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{
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return side == USED_POS_PLUS ? 1.0f : -1.0f;
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}
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struct ObjectPosSelector
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{
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typedef std::multimap<float,float> UsedAreaList; // angle pos -> angle offset
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typedef UsedAreaList::value_type UsedArea;
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ObjectPosSelector(float x, float y, float dist, float searcher_size);
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void AddUsedArea(float size, float angle, float dist);
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bool CheckOriginalAngle() const;
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void InitializeAngle();
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bool NextAngle(float& angle);
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bool NextUsedAngle(float& angle);
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bool CheckAngle(UsedArea const& usedArea, UsedAreaSide side, float angle) const;
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bool CheckSideAngle(UsedAreaSide side, float angle) const;
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void InitializeAngle(UsedAreaSide side);
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void UpdateNextAreaStart(UsedAreaSide side);
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bool NextSideAngle(UsedAreaSide side, float& angle);
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float m_centerX;
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float m_centerY;
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float m_searcherDist; // distance for searching pos (including searcher size and target object size)
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float m_searcherSize; // searcher object radius
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float m_searcherHalfSize; // angle size/2 of searcher object (at dist distance)
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UsedAreaList m_UsedAreaLists[2]; // list left/right side used angles (with angle size)
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UsedAreaList::const_iterator m_nextUsedAreaItr[2]; // next used used areas for check at left/right side, possible angles selected in range m_smallStepAngle..m_nextUsedAreaItr
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float m_nextUsedAreaStart[2]; // cached angle for next used area from m_nextUsedAreaItr or another side
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float m_stepAngle[2]; // current checked angle position at sides (less m_nextUsedArea), positive value
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};
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#endif
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