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// Copyright Hugh Perkins 2006, 2009
// hughperkins@gmail.com http://manageddreams.com
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2 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 General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License along
// with this program in the file licence.txt; if not, write to the
// Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-
// 1307 USA
// You can find the licence also on the web at:
// http://www.opensource.org/licenses/gpl-license.php
//
package hughai.mapping;
import java.util.ArrayList;
import com.springrts.ai.*;
import com.springrts.ai.oo.*;
import com.springrts.ai.oo.clb.*;
import hughai.PlayerObjects;
import hughai.basictypes.*;
import hughai.*;
import hughai.mapping.LosMap.LosMapPos;
import hughai.utils.*;
public class LosHelper
{
OOAICallback aicallback;
// MovementMaps movementMaps;
// LosMap losmap;
// Maps playerObjects.getMaps();
PlayerObjects playerObjects;
DrawingUtils drawingUtils;
public LosHelper( PlayerObjects playerObjects ) {
aicallback = playerObjects.getAicallback();
// movementMaps = playerObjects.getMovementMaps();
// losmap = playerObjects.getLosMap();
// playerObjects.getMaps() = playerObjects.getMaps();
this.playerObjects = playerObjects;
drawingUtils = playerObjects.getDrawingUtils();
}
// note: need to check compatible area
public TerrainPos GetNearestUnseen(TerrainPos currentpos, UnitDef unitdef, int unseensmeansthismanyframes)
{
Map map = aicallback.getMap();
int mapwidth = map.getWidth();
int mapheight = map.getHeight();
int currentunitarea = playerObjects.getMaps().getMovementMaps().GetArea(unitdef, currentpos);
LosMap losMap = playerObjects.getMaps().getLosMap();
int losmapwidth = LosMap.losmapwidth;
int losmapheight = LosMap.losmapheight;
int maxradius = (int)Math.sqrt(losmapheight * losmapheight + losmapwidth * losmapwidth);
int unitlosradius = (int)unitdef.getLosRadius(); // this is in map / 2 units, so it's ok
LosMapPos[] circlepoints = CreateCirclePoints(unitlosradius);
int bestradius = 10000000;
int bestarea = 0;
TerrainPos bestpos = null;
LosMapPos unitmappos = LosMapPos.fromTerrainPos( currentpos );
// int unitmapx = (int)(currentpos.x / 16);
// int unitmapy = (int)(currentpos.y / 16);
int thisframecount = playerObjects.getFrameController().getFrame();
// step around in unitlosradius steps
for (int radiuslosunits = unitlosradius * 2;
radiuslosunits <= maxradius;
radiuslosunits += unitlosradius)
{
// calculate angle for a unitlosradius / 2 step at this radius.
// DrawingUtils.DrawCircle(currentpos, radiuslosunits * 16);
// as we move further out, we need to move through smaller angles
double anglestepradians = 2 * Math.asin((double)unitlosradius / 2 / (double)radiuslosunits);
//csai.DebugSay("anglestepradians: " + anglestepradians);
//return null;
for (double angleradians = 0; angleradians <= Math.PI * 2; angleradians += anglestepradians)
{
int unseenarea = 0;
LosMapPos searchmappos = unitmappos.add( new LosMapPos(
(int)( radiuslosunits * Math.cos(angleradians) ),
(int)( radiuslosunits * Math.sin(angleradians) ) ) );
// int searchmapx = unitmappos.x + (int)((double)radiuslosunits * Math.cos(angleradians));
// int searchmapy = unitmappos.y + (int)((double)radiuslosunits * Math.sin(angleradians));
if (searchmappos.validate() )
{
// if (csai.DebugOn)
// {
// int groupnumber = DrawingUtils.DrawCircle(new AIFloat3(searchmapx * 16, 50 + aicallback.GetElevation( searchmapx * 16, searchmapy * 16 ), searchmapy * 16), unitlosradius * 16);
// aicallback.SetFigureColor(groupnumber, 1, 1, 0, 0.5);
// }
// LosMapPos searchMapPos = new LosMapPos( searchmapx, searchmapy );
TerrainPos searchTerrainPos = searchmappos.toTerrainPos();
int thisareanumber = playerObjects.getMaps()
.getMovementMaps().GetArea(
unitdef, searchTerrainPos );
// .getMovementMaps().GetArea(unitdef, new Float3(searchmapx * 16, 0, searchmapy * 16));
if (thisareanumber == currentunitarea)
{//
//if (csai.DebugOn)
// {
// int groupnumber = DrawingUtils.DrawCircle(new AIFloat3(searchmapx * 16, 100, searchmapy * 16), unitlosradius * 16);
// aicallback.SetFigureColor(groupnumber, 1, 1, 0, 0.5);
// }
for (LosMapPos point : circlepoints)
{
LosMapPos thismappos = searchmappos.add( point );
// int thismapx = searchmapx + point.x;
// int thismapy = searchmapy + point.y;
if (thismappos.validate())
{
// LosMapPos losMapPos = new LosMapPos( thismapx, thismapy );
int lastseenframecount = losMap.getLastSeenFrameCount( thismappos );
if (thisframecount - lastseenframecount > unseensmeansthismanyframes ) {
// if (thisframecount - losMap.LastSeenFrameCount[thismapx][ thismapy] > unseensmeansthismanyframes)
// {
unseenarea++;
}
}
}
if (unseenarea >= (circlepoints.length) * 8 / 10)
{
// drawingUtils.DrawCircle(
// new AIFloat3(searchmapx * 16,
// 100 * aicallback.getMap().getElevationAt(searchmapx * 16, searchmapy * 16),
// searchmapy * 16),
// unitlosradius * 16);
// drawingUtils.setFigureColor( 0f, 1f, 0.5f);
return searchTerrainPos;
}
// return new AIFloat3(searchmapx * 16, 0, searchmapy * 16); // for debugging, remove later
}
}
}
}
return null;
}
// returns points for a circle centered at origin of radius radius
// the points are all integer points that lie in this circle
LosMapPos[] CreateCirclePoints(int radius)
{
ArrayList<LosMapPos> pointsal = new ArrayList<LosMapPos>();
for (int y = -radius; y <= radius; y++)
{
int xextent = (int)Math.sqrt(radius * radius - y * y);
for (int x = -xextent; x <= xextent; x++)
{
pointsal.add(new LosMapPos(x, y));
}
}
return (LosMapPos[])pointsal.toArray(new LosMapPos[0]);
}
}
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