src/client/water/WaterWaveDistance.cpp

   1 ////////////////////////////////////////////////////////////////////////////////
   2 //    Scorched3D (c) 2000-2009
   3 //
   4 //    This file is part of Scorched3D.
   5 //
   6 //    Scorched3D is free software; you can redistribute it and/or modify
   7 //    it under the terms of the GNU General Public License as published by
   8 //    the Free Software Foundation; either version 2 of the License, or
   9 //    (at your option) any later version.
  10 //
  11 //    Scorched3D is distributed in the hope that it will be useful,
  12 //    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 //    GNU General Public License for more details.
  15 //
  16 //    You should have received a copy of the GNU General Public License
  17 //    along with Scorched3D; if not, write to the Free Software
  18 //    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 ////////////////////////////////////////////////////////////////////////////////
  20
  21 #include <water/WaterWaveDistance.h>
  22 #include <client/ScorchedClient.h>
  23 #include <landscapemap/LandscapeMaps.h>
  24 #include <lang/LangResource.h>
  25 #include <common/ProgressCounter.h>
  26
  27 WaterWaveDistance::WaterWaveDistance() : waveDistance_(0)
  28 {
  29 }
  30
  31 WaterWaveDistance::~WaterWaveDistance()
  32 {
  33 }
  34
  35 void WaterWaveDistance::generate(
  36         int mapWidth, int mapHeight, float waterHeight,
  37         ProgressCounter *counter)
  38 {
  39         if (counter) counter->setNewOp(LANG_RESOURCE("WAVES_DISTANCE", "Waves Distance"));
  40
  41         // Wave distance
  42         distanceWidthMult_ = 4;
  43         distanceHeightMult_ = 4;
  44         distanceWidth_ = mapWidth / distanceWidthMult_;
  45         distanceHeight_ = mapHeight / distanceHeightMult_;
  46
  47         delete [] waveDistance_;
  48         waveDistance_ = new float[distanceWidth_ * distanceHeight_];
  49         for (int a=0; a<distanceWidth_; a++)
  50         {
  51                 for (int b=0; b<distanceHeight_; b++)
  52                 {
  53                         waveDistance_[a + b * distanceWidth_] = 255.0f;
  54                 }
  55         }
  56
  57         const int skip = distanceWidthMult_;
  58         for (int y=0; y<mapHeight; y+=skip)
  59         {
  60                 if (counter) counter->setNewPercentage(float(y)/
  61                         float(mapHeight)*100.0f);
  62
  63                 for (int x=0; x<mapWidth; x+=skip)
  64                 {
  65                         float height =
  66                                 ScorchedClient::instance()->getLandscapeMaps().
  67                                         getGroundMaps().getHeight(x, y).asFloat();
  68                         if (height > waterHeight - 4.0f && height < waterHeight)
  69                         {
  70                                 float height2=
  71                                         ScorchedClient::instance()->getLandscapeMaps().
  72                                         getGroundMaps().getHeight(x+skip, y).asFloat();
  73                                 float height3=
  74                                         ScorchedClient::instance()->getLandscapeMaps().
  75                                         getGroundMaps().getHeight(x-skip, y).asFloat();
  76                                 float height4=
  77                                         ScorchedClient::instance()->getLandscapeMaps().
  78                                         getGroundMaps().getHeight(x, y+skip).asFloat();
  79                                 float height5=
  80                                         ScorchedClient::instance()->getLandscapeMaps().
  81                                         getGroundMaps().getHeight(x, y-skip).asFloat();
  82
  83                                 if (height2 > waterHeight || height3 > waterHeight ||
  84                                         height4 > waterHeight || height5 > waterHeight)
  85                                 {
  86                                         Vector posA((float) x, (float) y, 0.0f);
  87                                         for (int b=0; b<distanceHeight_; b++)
  88                                         {
  89                                                 for (int a=0; a<distanceWidth_; a++)
  90                                                 {
  91                                                         Vector posB(
  92                                                                 float(float(a) / float(distanceWidth_) * float(mapWidth)),
  93                                                                 float(float(b) / float(distanceHeight_) * float(mapHeight)), 0.0f);
  94                                                         float distance = (posB - posA).Magnitude();
  95                                                         waveDistance_[a + b * distanceWidth_] = MIN(waveDistance_[a + b * distanceWidth_], distance);
  96                                                 }
  97                                         }
  98                                 }
  99
 100                         }
 101                 }
 102         }
 103 }
 104
 105 float WaterWaveDistance::getWaveDistance(int posx, int posy)
 106 {
 107         int a = int(posx) / distanceWidthMult_;
 108         int b = int(posy) / distanceHeightMult_;
 109         int x = MAX(0, MIN(a, (distanceWidth_ - 1)));
 110         int y = MAX(0, MIN(b, (distanceHeight_ - 1)));
 111
 112         float distance = waveDistance_[x + y * distanceWidth_];
 113         distance += fabsf(float(a - x)) + fabsf(float(b - y));
 114         return distance;
 115 }