143 lines
4.6 KiB
C++
143 lines
4.6 KiB
C++
/*
|
|
* Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license: https://github.com/azerothcore/azerothcore-wotlk/blob/master/LICENSE-GPL2
|
|
* Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
|
|
* Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
|
|
*/
|
|
|
|
#ifndef _OBJECT_POS_SELECTOR_H
|
|
#define _OBJECT_POS_SELECTOR_H
|
|
|
|
#include<Common.h>
|
|
|
|
#include<map>
|
|
|
|
enum UsedPosType { USED_POS_PLUS, USED_POS_MINUS };
|
|
|
|
inline UsedPosType operator ~(UsedPosType uptype)
|
|
{
|
|
return uptype == USED_POS_PLUS ? USED_POS_MINUS : USED_POS_PLUS;
|
|
}
|
|
|
|
struct ObjectPosSelector
|
|
{
|
|
struct UsedPos
|
|
{
|
|
UsedPos(float sign_, float size_, float dist_) : sign(sign_), size(size_), dist(dist_) {}
|
|
|
|
float sign;
|
|
|
|
float size; // size of point
|
|
float dist; // dist to central point (including central point size)
|
|
};
|
|
|
|
typedef std::multimap<float, UsedPos> UsedPosList; // abs(angle)->Node
|
|
|
|
ObjectPosSelector(float x, float y, float size, float dist);
|
|
|
|
void AddUsedPos(float size, float angle, float dist);
|
|
void InitializeAngle();
|
|
|
|
bool FirstAngle(float& angle);
|
|
bool NextAngle(float& angle);
|
|
bool NextUsedAngle(float& angle);
|
|
|
|
bool NextPosibleAngle(float& angle);
|
|
|
|
bool CheckAngle(UsedPosList::value_type const& nextUsedPos, float sign, float angle ) const
|
|
{
|
|
float angle_step2 = GetAngle(nextUsedPos.second);
|
|
|
|
float next_angle = nextUsedPos.first;
|
|
if (nextUsedPos.second.sign * sign < 0) // last node from diff. list (-pi+alpha)
|
|
next_angle = 2 * M_PI - next_angle; // move to positive
|
|
|
|
return fabs(angle) + angle_step2 <= next_angle;
|
|
}
|
|
|
|
bool CheckOriginal() const
|
|
{
|
|
return (m_UsedPosLists[USED_POS_PLUS].empty() || CheckAngle(*m_UsedPosLists[USED_POS_PLUS].begin(), 1.0f, 0)) &&
|
|
(m_UsedPosLists[USED_POS_MINUS].empty() || CheckAngle(*m_UsedPosLists[USED_POS_MINUS].begin(), -1.0f, 0));
|
|
}
|
|
|
|
bool IsNonBalanced() const { return m_UsedPosLists[USED_POS_PLUS].empty() != m_UsedPosLists[USED_POS_MINUS].empty(); }
|
|
|
|
bool NextAngleFor(UsedPosList::value_type const& usedPos, float sign, UsedPosType uptype, float& angle)
|
|
{
|
|
float angle_step = GetAngle(usedPos.second);
|
|
|
|
// next possible angle
|
|
angle = usedPos.first * usedPos.second.sign + angle_step * sign;
|
|
|
|
UsedPosList::value_type const* nextNode = nextUsedPos(uptype);
|
|
if (nextNode)
|
|
{
|
|
// if next node permit use selected angle, then do it
|
|
if (!CheckAngle(*nextNode, sign, angle))
|
|
{
|
|
m_smallStepOk[uptype] = false;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// possible more points
|
|
m_smallStepOk[uptype] = true;
|
|
m_smallStepAngle[uptype] = angle;
|
|
m_smallStepNextUsedPos[uptype] = nextNode;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool NextSmallStepAngle(float sign, UsedPosType uptype, float& angle)
|
|
{
|
|
// next possible angle
|
|
angle = m_smallStepAngle[uptype] + m_anglestep * sign;
|
|
|
|
if (fabs(angle) > M_PI)
|
|
{
|
|
m_smallStepOk[uptype] = false;
|
|
return false;
|
|
}
|
|
|
|
if (m_smallStepNextUsedPos[uptype])
|
|
{
|
|
if (fabs(angle) >= m_smallStepNextUsedPos[uptype]->first)
|
|
{
|
|
m_smallStepOk[uptype] = false;
|
|
return false;
|
|
}
|
|
|
|
// if next node permit use selected angle, then do it
|
|
if (!CheckAngle(*m_smallStepNextUsedPos[uptype], sign, angle))
|
|
{
|
|
m_smallStepOk[uptype] = false;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// possible more points
|
|
m_smallStepAngle[uptype] = angle;
|
|
return true;
|
|
}
|
|
|
|
// next used post for m_nextUsedPos[uptype]
|
|
UsedPosList::value_type const* nextUsedPos(UsedPosType uptype);
|
|
|
|
// angle from used pos to next possible free pos
|
|
float GetAngle(UsedPos const& usedPos) const { return acos(m_dist / (usedPos.dist + usedPos.size + m_size)); }
|
|
|
|
float m_center_x;
|
|
float m_center_y;
|
|
float m_size; // size of object in center
|
|
float m_dist; // distance for searching pos (including central object size)
|
|
float m_anglestep;
|
|
|
|
UsedPosList m_UsedPosLists[2];
|
|
UsedPosList::const_iterator m_nextUsedPos[2];
|
|
|
|
// field for small step from first after next used pos until next pos
|
|
float m_smallStepAngle[2];
|
|
bool m_smallStepOk[2];
|
|
UsedPosList::value_type const* m_smallStepNextUsedPos[2];
|
|
};
|
|
#endif
|