khanat-opennel-code/code/nel/src/3d/zone_search.cpp

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// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
// Copyright (C) 2010 Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "std3d.h"
#include <cstdio>
#include <iostream>
#include "nel/3d/zone_search.h"
using namespace std;
namespace NL3D
{
/**
* Constructor : Initialize some privates members
*/
CZoneSearch::CZoneSearch()
{
/// Size X is named of AA to ZZ, current size is IB = 26 * 8 + 2 (AA is zone number 1, AZ zone number 26, BA zone number 27...)
// TMP fix for level designer (nico ...)
_NbZoneX = 26 * ('Z'-'A') + ('Z'-'A');
/// Number zones on Y axis of landscape
_NbZoneY = 297;
/// Size X of one zone (in meters)
_SizeZoneX = 160;
/// Size X of one zone (in meters)
_SizeZoneY = 160;
}
/**
* Get the zone name corresponding to coordinate
* \param x is axis X coordinate (in meters)
* \param y is axis Y coordinate (in meters)
* \param cx is axis X coordinate of center area (in meters)
* \param cy is axis Y coordinate of center area (in meters)
* \return a pair of the zone name and square distance between zone and center area (in zone unit)
*/
pair<string, uint32> CZoneSearch::getZoneName(uint x, uint y, uint cx, uint cy)
{
char name[13];
uint zoneY = y / _SizeZoneY + 1;
uint zoneX = x / _SizeZoneX;
uint zoneCenterY = cy / _SizeZoneY + 1;
uint zoneCenterX = cx / _SizeZoneX;
uint32 distance = (zoneX - zoneCenterX) * (zoneX - zoneCenterX) + (zoneY - zoneCenterY) * (zoneY - zoneCenterY);
char firstLetter = zoneX / 26 + 'A';
char secondLetter = zoneX % 26 + 'A';
sprintf(name, "%d_%c%c.zonel", zoneY, firstLetter, secondLetter);
return make_pair<string, uint32>(string(name), distance);
}
/*
* Get a list of zone name around a position
* \param x is axis X ccordinate (in meter)
* \param y is axis Y coordinate (in meter)
* \param sizeArea is area of zone research (in meter)
* \param l is a reference to a list of pair of string and uint32
* \return a liste contained name of all zone around indicated position and and square distance between zone and center area (in zone unit)
*/
void CZoneSearch::getListZoneName(uint x, uint y, uint sizeArea, list<pair<string, uint32> >& l)
{
sint startPosX, startPosY;
uint lastPosX, lastPosY, sizeAreaX, sizeAreaY;
startPosX = x - sizeArea;
startPosY = y - sizeArea;
sizeArea += sizeArea;
sizeAreaX = sizeAreaY = sizeArea;
if(startPosX < 0)
{
sizeAreaX += startPosX;
startPosX = 0;
}
lastPosX = startPosX + sizeAreaX;
if(lastPosX >= (_NbZoneX * _SizeZoneX))
{
sizeAreaX -= _NbZoneX * _SizeZoneX - lastPosX;
lastPosX = _NbZoneX * _SizeZoneX - 1;
}
if(startPosY < 0)
{
sizeAreaY += startPosY;
startPosY = 0;
}
lastPosY = startPosY + sizeAreaY;
if(lastPosY >= (_NbZoneY * _SizeZoneY))
{
sizeAreaY -= _NbZoneY * _SizeZoneY - lastPosY;
lastPosY = _NbZoneY * _SizeZoneY - 1;
}
l.clear();
for(uint i = startPosY; i <= lastPosY; i += _SizeZoneY)
{
for(uint j = startPosX; j <= lastPosX; j += _SizeZoneX)
{
l.push_back(getZoneName(j, i, x, y));
}
}
}
uint16 CZoneSearch::getZoneId (uint x, uint y) const
{
uint zoneY = y / _SizeZoneY;
uint zoneX = x / _SizeZoneX;
return (zoneX&255)+(zoneY<<8);
}
void CZoneSearch::getZonePos (uint16 zoneId, uint &x, uint &y) const
{
x = _SizeZoneY*(zoneId&255);
y = _SizeZoneY*(zoneId>>8);
}
void CZoneSearch::getListZoneId (uint x, uint y, uint sizeArea, vector<uint16> &l, const std::vector<uint16> *validZoneIds)
{
sint startPosX, startPosY;
uint lastPosX, lastPosY, sizeAreaX, sizeAreaY;
startPosX = x - sizeArea;
startPosY = y - sizeArea;
sizeArea += sizeArea;
sizeAreaX = sizeAreaY = sizeArea;
if(startPosX < 0)
{
sizeAreaX += startPosX;
startPosX = 0;
}
lastPosX = startPosX + sizeAreaX;
if(lastPosX >= (_NbZoneX * _SizeZoneX))
{
sizeAreaX -= _NbZoneX * _SizeZoneX - lastPosX;
lastPosX = _NbZoneX * _SizeZoneX - 1;
}
if(startPosY < 0)
{
sizeAreaY += startPosY;
startPosY = 0;
}
lastPosY = startPosY + sizeAreaY;
if(lastPosY >= (_NbZoneY * _SizeZoneY))
{
sizeAreaY -= _NbZoneY * _SizeZoneY - lastPosY;
lastPosY = _NbZoneY * _SizeZoneY - 1;
}
l.clear();
for(uint i = startPosY; i <= lastPosY; i += _SizeZoneY)
{
for(uint j = startPosX; j <= lastPosX; j += _SizeZoneX)
{
uint16 zoneId = getZoneId(j, i);
if (validZoneIds)
{
bool found = false;
for(uint k = 0; k < validZoneIds->size(); ++k)
{
if (zoneId == (*validZoneIds)[k])
{
found = true;
break;
}
}
if (!found) continue;
}
l.push_back(zoneId);
}
}
}
std::string CZoneSearch::getZoneNameFromId (uint16 zoneid)
{
char name[16];
sint x = zoneid & 255;
sint y = zoneid >> 8;
sprintf (name, "%d_%c%c.zonel", y+1, (char)('A'+(x/26)), (char)('A'+(x%26)));
return string(name);
}
} // NL3D