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/Decal.hpp"
  26 #include "Graphic/gamegl.hpp"
  27 #include "Graphic/Texture.hpp"
  28 #include "Math/Frustum.hpp"
  29 #include "Math/XYZ.hpp"
  30 #include "Utils/ImageIO.hpp"
  31
  32 #define max_terrain_size        256
  33 #define curr_terrain_size       size
  34 #define subdivision             64
  35 #define max_patch_elements      (max_terrain_size/subdivision)*(max_terrain_size/subdivision)*54
  36
  37 #define allfirst 0
  38 #define mixed 1
  39 #define allsecond 2
  40
  41 #define max_decals 1000
  42
  43 #define snowyenvironment 0
  44 #define grassyenvironment 1
  45 #define desertenvironment 2
  46 //
  47 // Model Structures
  48 //
  49
  50 class Terrain
  51 {
  52 public:
  53     Texture bloodtexture;
  54     Texture bloodtexture2;
  55     Texture shadowtexture;
  56     Texture footprinttexture;
  57     Texture bodyprinttexture;
  58     Texture breaktexture;
  59     Texture terraintexture;
  60     short size;
  61
  62     int patchobjectnum[subdivision][subdivision];
  63     unsigned int patchobjects[subdivision][subdivision][300];
  64
  65     float scale;
  66     int type;
  67     float heightmap[max_terrain_size + 1][max_terrain_size + 1];
  68     XYZ normals[max_terrain_size][max_terrain_size];
  69     XYZ facenormals[max_terrain_size][max_terrain_size];
  70     XYZ triangles[(max_terrain_size - 1) * (max_terrain_size - 1) * 2][3];
  71     float colors[max_terrain_size][max_terrain_size][4];
  72     float opacityother[max_terrain_size][max_terrain_size];
  73     float texoffsetx[max_terrain_size][max_terrain_size];
  74     float texoffsety[max_terrain_size][max_terrain_size];
  75     int numtris[subdivision][subdivision];
  76     int textureness[subdivision][subdivision];
  77
  78     GLfloat vArray[(max_patch_elements)*subdivision*subdivision];
  79
  80     bool visible[subdivision][subdivision];
  81     float avgypatch[subdivision][subdivision];
  82     float maxypatch[subdivision][subdivision];
  83     float minypatch[subdivision][subdivision];
  84     float heightypatch[subdivision][subdivision];
  85
  86     int patch_elements;
  87
  88     std::vector<Decal> decals;
  89
  90     void AddObject(XYZ where, float radius, int id);
  91     void DeleteDecal(int which);
  92     void MakeDecal(decal_type type, XYZ where, float size, float opacity, float rotation);
  93     void MakeDecalLock(decal_type type, XYZ where, int whichx, int whichy, float size, float opacity, float rotation);
  94     int lineTerrain(XYZ p1, XYZ p2, XYZ *p);
  95     float getHeight(float pointx, float pointz);
  96     float getOpacity(float pointx, float pointz);
  97     XYZ getLighting(float pointx, float pointz);
  98     XYZ getNormal(float pointx, float pointz);
  99     void UpdateVertexArray(int whichx, int whichy);
 100     bool load(const std::string& fileName);
 101     void CalculateNormals();
 102     void drawdecals();
 103     void draw(int layer);
 104     void DoShadows();
 105     void deleteDeadDecals();
 106
 107     Terrain();
 108
 109 private:
 110     void drawpatch(int whichx, int whichy, float opacity);
 111     void drawpatchother(int whichx, int whichy, float opacity);
 112     void drawpatchotherother(int whichx, int whichy);
 113     void UpdateTransparency(int whichx, int whichy);
 114     void UpdateTransparencyother(int whichx, int whichy);
 115     void UpdateTransparencyotherother(int whichx, int whichy);
 116 };
 117
 118 #endif