Source/Terrain.h

   1 /*
   2 Copyright (C) 2003, 2010 - Wolfire Games
   3
   4 This file is part of Lugaru.
   5
   6 Lugaru is free software; you can redistribute it and/or
   7 modify it under the terms of the GNU General Public License
   8 as published by the Free Software Foundation; either version 2
   9 of the License, or (at your option) any later version.
  10
  11 This program 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.
  14
  15 See the GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20 */
  21
  22 #ifndef _TERRAIN_H_
  23 #define _TERRAIN_H_
  24
  25 #include "gamegl.h"
  26 #include "Frustum.h"
  27 #include "Lights.h"
  28 #include "TGALoader.h"
  29 #include "Quaternions.h"
  30 #include "Quaternions.h"
  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 shadowdecal 0
  44 #define footprintdecal 1
  45 #define blooddecal 2
  46 #define blooddecalfast 3
  47 #define shadowdecalpermanent 4
  48 #define breakdecal 5
  49 #define blooddecalslow 6
  50 #define bodyprintdecal 7
  51
  52 #define snowyenvironment 0
  53 #define grassyenvironment 1
  54 #define desertenvironment 2
  55 //
  56 // Model Structures
  57 //
  58
  59 class Terrain{
  60 public:
  61         GLuint bloodtexture;
  62         GLuint bloodtexture2;
  63         GLuint shadowtexture;
  64         GLuint footprinttexture;
  65         GLuint bodyprinttexture;
  66         GLuint breaktexture;
  67         GLuint terraintexture;
  68         short   size;
  69
  70         int patchobjectnum[subdivision][subdivision];
  71         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 getHeightExtrude(float pointx, float pointz,float point2x, float point2z);
 113         float getOpacity(float pointx, float pointz);
 114         XYZ getLighting(float pointx, float pointz);
 115         XYZ getNormal(float pointx, float pointz);
 116         void UpdateVertexArray(int whichx, int whichy);
 117         void UpdateTransparency(int whichx, int whichy);
 118         void UpdateTransparencyother(int whichx, int whichy);
 119         void UpdateTransparencyotherother(int whichx, int whichy);
 120         bool load(char *fileName);
 121         void CalculateNormals();
 122         void drawdecals();
 123         void draw(int layer);
 124         void drawpatch(int whichx, int whichy, float opacity);
 125         void drawpatchother(int whichx, int whichy, float opacity);
 126         void drawpatchotherother(int whichx, int whichy, float opacity);
 127         void DoLighting();
 128         void DoShadows();
 129
 130         Terrain();
 131         ~Terrain();
 132 };
 133
 134 #endif