Source/Environment/Terrain.hpp

   1 /*
   2 Copyright (C) 2003, 2010 - Wolfire Games
   3 Copyright (C) 2010-2016 - Lugaru contributors (see AUTHORS file)
   4
   5 This file is part of Lugaru.
   6
   7 Lugaru is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 Lugaru is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with Lugaru.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #ifndef _TERRAIN_HPP_
  22 #define _TERRAIN_HPP_
  23
  24 #include "Environment/Lights.hpp"
  25 #include "Graphic/gamegl.hpp"
  26 #include "Graphic/Texture.hpp"
  27 #include "Math/Frustum.hpp"
  28 #include "Math/Quaternions.hpp"
  29 #include "Utils/ImageIO.hpp"
  30
  31 #define max_terrain_size        256
  32 #define curr_terrain_size       size
  33 #define subdivision             64
  34 #define max_patch_elements      (max_terrain_size/subdivision)*(max_terrain_size/subdivision)*54
  35
  36 #define allfirst 0
  37 #define mixed 1
  38 #define allsecond 2
  39
  40 #define max_decals 1000
  41
  42 #define shadowdecal 0
  43 #define footprintdecal 1
  44 #define blooddecal 2
  45 #define blooddecalfast 3
  46 #define shadowdecalpermanent 4
  47 #define breakdecal 5
  48 #define blooddecalslow 6
  49 #define bodyprintdecal 7
  50
  51 #define snowyenvironment 0
  52 #define grassyenvironment 1
  53 #define desertenvironment 2
  54 //
  55 // Model Structures
  56 //
  57
  58 class Terrain
  59 {
  60 public:
  61     Texture bloodtexture;
  62     Texture bloodtexture2;
  63     Texture shadowtexture;
  64     Texture footprinttexture;
  65     Texture bodyprinttexture;
  66     Texture breaktexture;
  67     Texture terraintexture;
  68     short size;
  69
  70     int patchobjectnum[subdivision][subdivision];
  71     unsigned int patchobjects[subdivision][subdivision][300];
  72
  73     float scale;
  74     int type;
  75     float heightmap[max_terrain_size + 1][max_terrain_size + 1];
  76     XYZ normals[max_terrain_size][max_terrain_size];
  77     XYZ facenormals[max_terrain_size][max_terrain_size];
  78     XYZ triangles[(max_terrain_size - 1) * (max_terrain_size - 1) * 2][3];
  79     float colors[max_terrain_size][max_terrain_size][4];
  80     float opacityother[max_terrain_size][max_terrain_size];
  81     float texoffsetx[max_terrain_size][max_terrain_size];
  82     float texoffsety[max_terrain_size][max_terrain_size];
  83     int numtris[subdivision][subdivision];
  84     int textureness[subdivision][subdivision];
  85
  86     GLfloat vArray[(max_patch_elements)*subdivision*subdivision];
  87
  88     bool visible[subdivision][subdivision];
  89     float avgypatch[subdivision][subdivision];
  90     float maxypatch[subdivision][subdivision];
  91     float minypatch[subdivision][subdivision];
  92     float heightypatch[subdivision][subdivision];
  93
  94     int patch_elements;
  95
  96     float decaltexcoords[max_decals][3][2];
  97     XYZ decalvertex[max_decals][3];
  98     int decaltype[max_decals];
  99     float decalopacity[max_decals];
 100     float decalrotation[max_decals];
 101     float decalalivetime[max_decals];
 102     float decalbrightness[max_decals];
 103     XYZ decalposition[max_decals];
 104     int numdecals;
 105
 106     void AddObject(XYZ where, float radius, int id);
 107     void DeleteDecal(int which);
 108     void MakeDecal(int type, XYZ where, float size, float opacity, float rotation);
 109     void MakeDecalLock(int type, XYZ where, int whichx, int whichy, float size, float opacity, float rotation);
 110     int lineTerrain(XYZ p1, XYZ p2, XYZ *p);
 111     float getHeight(float pointx, float pointz);
 112     float getOpacity(float pointx, float pointz);
 113     XYZ getLighting(float pointx, float pointz);
 114     XYZ getNormal(float pointx, float pointz);
 115     void UpdateVertexArray(int whichx, int whichy);
 116     bool load(const std::string& fileName);
 117     void CalculateNormals();
 118     void drawdecals();
 119     void draw(int layer);
 120     void DoShadows();
 121
 122     Terrain();
 123
 124 private:
 125     void drawpatch(int whichx, int whichy, float opacity);
 126     void drawpatchother(int whichx, int whichy, float opacity);
 127     void drawpatchotherother(int whichx, int whichy);
 128     void UpdateTransparency(int whichx, int whichy);
 129     void UpdateTransparencyother(int whichx, int whichy);
 130     void UpdateTransparencyotherother(int whichx, int whichy);
 131 };
 132
 133 #endif