2 Copyright (C) 2003, 2010 - Wolfire Games
4 This file is part of Lugaru.
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.
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.
15 See the GNU General Public License for more details.
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.
26 extern float viewdistance;
27 extern float fadestart;
28 extern int environment;
29 extern float texscale;
31 extern float multiplier;
32 extern FRUSTUM frustum;
33 extern float texdetail;
36 extern float blurness;
37 extern float targetblurness;
38 extern Objects objects;
39 extern TGAImageRec texture;
40 extern bool visibleloading;
41 extern bool skyboxtexture;
42 extern int tutoriallevel;
46 int Terrain::lineTerrain(XYZ p1,XYZ p2, XYZ *p)
49 static float distance;
50 static float olddistance;
51 static int intersecting;
52 static int firstintersecting;
54 static int startx,starty;
57 static int numtris=(size-1)*(size-1)*2;
58 static float highest,lowest;
74 if(startx>endx){i=endx;endx=startx;startx=i;}
75 if(starty>endy){i=endy;endy=starty;starty=i;}
79 if(endx>size-1)endx=size-1;
80 if(endy>size-1)endy=size-1;
82 for(i=startx;i<=endx;i++){
83 for(j=starty;j<=endy;j++){
87 if(heightmap[i+k][j]>highest)highest=heightmap[i+k][j];
88 if(heightmap[i+k][j]<lowest)lowest=heightmap[i+k][j];
89 if(heightmap[i+k][j+1]>highest)highest=heightmap[i+k][j+1];
90 if(heightmap[i+k][j+1]<lowest)lowest=heightmap[i+k][j+1];
92 if((p1.y<=highest||p2.y<=highest)&&(p1.y>=lowest||p2.y>=lowest)){
94 triangles[0].y=heightmap[i][j];
98 triangles[1].y=heightmap[i][j+1];
102 triangles[2].y=heightmap[i+1][j];
105 intersecting=LineFacet(p1,p2,triangles[0],triangles[1],triangles[2],&point);
106 distance=findDistancefast(&p1,&point);
107 if((distance<olddistance||firstintersecting==-1)&&intersecting==1){olddistance=distance; firstintersecting=1; *p=point;}
110 triangles[0].y=heightmap[i+1][j];
114 triangles[1].y=heightmap[i][j+1];
118 triangles[2].y=heightmap[i+1][j+1];
121 intersecting=LineFacet(p1,p2,triangles[0],triangles[1],triangles[2],&point);
122 distance=findDistancefast(&p1,&point);
123 if((distance<olddistance||firstintersecting==-1)&&intersecting==1){olddistance=distance; firstintersecting=1; *p=point;}
127 return firstintersecting;
130 void Terrain::UpdateTransparency(int whichx, int whichy){
132 static int i,j,a,b,c,d,patch_size,stepsize;
133 static float distance;
135 static float viewdistsquared;
137 viewdistsquared=viewdistance*viewdistance;
138 patch_size=size/subdivision;
141 c=whichx*patch_elements+whichy*patch_elements*subdivision;
143 for(i=patch_size*whichx;i<patch_size*(whichx+1)+1;i+=stepsize){
144 for(j=patch_size*whichy;j<patch_size*(whichy+1)+1;j+=stepsize){
148 vertex.y=heightmap[i][j]*scale;
149 distance=findDistancefast(&viewer,&vertex);
150 if(distance>viewdistsquared)distance=viewdistsquared;
151 colors[i][j][3]=(viewdistsquared-(distance-(viewdistsquared*fadestart))*(1/(1-fadestart)))/viewdistsquared;
156 for(i=patch_size*whichx;i<patch_size*(whichx+1);i+=stepsize){
157 for(j=patch_size*whichy;j<patch_size*(whichy+1);j+=stepsize){
158 a=(i-(patch_size*whichx))/stepsize;
159 b=(j-(patch_size*whichy))/stepsize;
160 d=(a*54)+(b*54*patch_size/stepsize);
161 vArray[d+c+6]=colors[i][j][3];
163 vArray[d+c+15]=colors[i][j+stepsize][3];
165 vArray[d+c+24]=colors[i+stepsize][j][3];
167 vArray[d+c+33]=colors[i+stepsize][j][3];
169 vArray[d+c+42]=colors[i][j+stepsize][3];
171 vArray[d+c+51]=colors[i+stepsize][j+stepsize][3];
176 void Terrain::UpdateTransparencyother(int whichx, int whichy){
178 static int i,j,a,b,c,d,patch_size,stepsize;
179 static float distance;
181 patch_size=size/subdivision;
184 c=whichx*patch_elements+whichy*patch_elements*subdivision;
186 for(i=patch_size*whichx;i<patch_size*(whichx+1);i+=stepsize){
187 for(j=patch_size*whichy;j<patch_size*(whichy+1);j+=stepsize){
188 a=(i-(patch_size*whichx))/stepsize;
189 b=(j-(patch_size*whichy))/stepsize;
190 d=(a*54)+(b*54*patch_size/stepsize);
191 vArray[d+c+6]=colors[i][j][3]*opacityother[i][j];
193 vArray[d+c+15]=colors[i][j+stepsize][3]*opacityother[i][j+stepsize];
195 vArray[d+c+24]=colors[i+stepsize][j][3]*opacityother[i+stepsize][j];
197 vArray[d+c+33]=colors[i+stepsize][j][3]*opacityother[i+stepsize][j];
199 vArray[d+c+42]=colors[i][j+stepsize][3]*opacityother[i][j+stepsize];
201 vArray[d+c+51]=colors[i+stepsize][j+stepsize][3]*opacityother[i+stepsize][j+stepsize];
206 void Terrain::UpdateTransparencyotherother(int whichx, int whichy){
208 static int i,j,a,b,c,d,patch_size,stepsize;
209 static float distance;
211 static float viewdistsquared;
213 viewdistsquared=viewdistance*viewdistance;
214 patch_size=size/subdivision;
217 c=whichx*patch_elements+whichy*patch_elements*subdivision;
219 for(i=patch_size*whichx;i<patch_size*(whichx+1)+1;i+=stepsize){
220 for(j=patch_size*whichy;j<patch_size*(whichy+1)+1;j+=stepsize){
224 vertex.y=heightmap[i][j]*scale;
225 distance=findDistancefast(&viewer,&vertex);
226 if(distance>viewdistsquared)distance=viewdistsquared;
227 colors[i][j][3]=(viewdistsquared-(distance-(viewdistsquared*fadestart))*(1/(1-fadestart)))/viewdistsquared;
232 for(i=patch_size*whichx;i<patch_size*(whichx+1);i+=stepsize){
233 for(j=patch_size*whichy;j<patch_size*(whichy+1);j+=stepsize){
234 a=(i-(patch_size*whichx))/stepsize;
235 b=(j-(patch_size*whichy))/stepsize;
236 d=(a*54)+(b*54*patch_size/stepsize);
237 vArray[d+c+6]=colors[i][j][3];
239 vArray[d+c+15]=colors[i][j+stepsize][3];
241 vArray[d+c+24]=colors[i+stepsize][j][3];
243 vArray[d+c+33]=colors[i+stepsize][j][3];
245 vArray[d+c+42]=colors[i][j+stepsize][3];
247 vArray[d+c+51]=colors[i+stepsize][j+stepsize][3];
252 void Terrain::UpdateVertexArray(int whichx, int whichy){
253 static int i,j,a,b,c,patch_size,stepsize;
256 numtris[whichx][whichy]=0;
258 patch_size=size/subdivision;
261 c=whichx*patch_elements+whichy*patch_elements*subdivision;
262 for(i=patch_size*whichx;i<patch_size*(whichx+1);i+=stepsize){
263 for(j=patch_size*whichy;j<patch_size*(whichy+1);j+=stepsize){
264 a=(i-((float)size/subdivision*(float)whichx))/stepsize;
265 b=(j-((float)size/subdivision*(float)whichy))/stepsize;
266 vArray[(a*54)+(b*54*patch_size/stepsize)+c+0]=i*scale;
267 vArray[(a*54)+(b*54*patch_size/stepsize)+c+1]=heightmap[i][j]*scale;
268 vArray[(a*54)+(b*54*patch_size/stepsize)+c+2]=j*scale;
269 vArray[(a*54)+(b*54*patch_size/stepsize)+c+3]=colors[i][j][0];
270 vArray[(a*54)+(b*54*patch_size/stepsize)+c+4]=colors[i][j][1];
271 vArray[(a*54)+(b*54*patch_size/stepsize)+c+5]=colors[i][j][2];
272 vArray[(a*54)+(b*54*patch_size/stepsize)+c+6]=colors[i][j][3];
273 vArray[(a*54)+(b*54*patch_size/stepsize)+c+7]=i*scale*texscale+texoffsetx[i][j];
274 vArray[(a*54)+(b*54*patch_size/stepsize)+c+8]=j*scale*texscale+texoffsety[i][j];
276 vArray[(a*54)+(b*54*patch_size/stepsize)+c+9]=i*scale;
277 vArray[(a*54)+(b*54*patch_size/stepsize)+c+10]=heightmap[i][j+stepsize]*scale;
278 vArray[(a*54)+(b*54*patch_size/stepsize)+c+11]=j*scale+stepsize*scale;
279 vArray[(a*54)+(b*54*patch_size/stepsize)+c+12]=colors[i][j+stepsize][0];
280 vArray[(a*54)+(b*54*patch_size/stepsize)+c+13]=colors[i][j+stepsize][1];
281 vArray[(a*54)+(b*54*patch_size/stepsize)+c+14]=colors[i][j+stepsize][2];
282 vArray[(a*54)+(b*54*patch_size/stepsize)+c+15]=colors[i][j+stepsize][3];
283 vArray[(a*54)+(b*54*patch_size/stepsize)+c+16]=i*scale*texscale+texoffsetx[i][j+stepsize];
284 vArray[(a*54)+(b*54*patch_size/stepsize)+c+17]=j*scale*texscale+stepsize*scale*texscale+texoffsety[i][j+stepsize];
286 vArray[(a*54)+(b*54*patch_size/stepsize)+c+18]=i*scale+stepsize*scale;
287 vArray[(a*54)+(b*54*patch_size/stepsize)+c+19]=heightmap[i+stepsize][j]*scale;
288 vArray[(a*54)+(b*54*patch_size/stepsize)+c+20]=j*scale;
289 vArray[(a*54)+(b*54*patch_size/stepsize)+c+21]=colors[i+stepsize][j][0];
290 vArray[(a*54)+(b*54*patch_size/stepsize)+c+22]=colors[i+stepsize][j][1];
291 vArray[(a*54)+(b*54*patch_size/stepsize)+c+23]=colors[i+stepsize][j][2];
292 vArray[(a*54)+(b*54*patch_size/stepsize)+c+24]=colors[i+stepsize][j][3];
293 vArray[(a*54)+(b*54*patch_size/stepsize)+c+25]=i*scale*texscale+stepsize*scale*texscale+texoffsetx[i+stepsize][j];
294 vArray[(a*54)+(b*54*patch_size/stepsize)+c+26]=j*scale*texscale+texoffsety[i+stepsize][j];
296 vArray[(a*54)+(b*54*patch_size/stepsize)+c+27]=i*scale+stepsize*scale;
297 vArray[(a*54)+(b*54*patch_size/stepsize)+c+28]=heightmap[i+stepsize][j]*scale;
298 vArray[(a*54)+(b*54*patch_size/stepsize)+c+29]=j*scale;
299 vArray[(a*54)+(b*54*patch_size/stepsize)+c+30]=colors[i+stepsize][j][0];
300 vArray[(a*54)+(b*54*patch_size/stepsize)+c+31]=colors[i+stepsize][j][1];
301 vArray[(a*54)+(b*54*patch_size/stepsize)+c+32]=colors[i+stepsize][j][2];
302 vArray[(a*54)+(b*54*patch_size/stepsize)+c+33]=colors[i+stepsize][j][3];
303 vArray[(a*54)+(b*54*patch_size/stepsize)+c+34]=i*scale*texscale+stepsize*scale*texscale+texoffsetx[i+stepsize][j];
304 vArray[(a*54)+(b*54*patch_size/stepsize)+c+35]=j*scale*texscale+texoffsety[i+stepsize][j];
306 vArray[(a*54)+(b*54*patch_size/stepsize)+c+36]=i*scale;
307 vArray[(a*54)+(b*54*patch_size/stepsize)+c+37]=heightmap[i][j+stepsize]*scale;
308 vArray[(a*54)+(b*54*patch_size/stepsize)+c+38]=j*scale+stepsize*scale;
309 vArray[(a*54)+(b*54*patch_size/stepsize)+c+39]=colors[i][j+stepsize][0];
310 vArray[(a*54)+(b*54*patch_size/stepsize)+c+40]=colors[i][j+stepsize][1];
311 vArray[(a*54)+(b*54*patch_size/stepsize)+c+41]=colors[i][j+stepsize][2];
312 vArray[(a*54)+(b*54*patch_size/stepsize)+c+42]=colors[i][j+stepsize][3];
313 vArray[(a*54)+(b*54*patch_size/stepsize)+c+43]=i*scale*texscale+texoffsetx[i][j+stepsize];
314 vArray[(a*54)+(b*54*patch_size/stepsize)+c+44]=j*scale*texscale+stepsize*scale*texscale+texoffsety[i][j+stepsize];
316 vArray[(a*54)+(b*54*patch_size/stepsize)+c+45]=i*scale+stepsize*scale;
317 vArray[(a*54)+(b*54*patch_size/stepsize)+c+46]=heightmap[i+stepsize][j+stepsize]*scale;
318 vArray[(a*54)+(b*54*patch_size/stepsize)+c+47]=j*scale+stepsize*scale;
319 vArray[(a*54)+(b*54*patch_size/stepsize)+c+48]=colors[i+stepsize][j+stepsize][0];
320 vArray[(a*54)+(b*54*patch_size/stepsize)+c+49]=colors[i+stepsize][j+stepsize][1];
321 vArray[(a*54)+(b*54*patch_size/stepsize)+c+50]=colors[i+stepsize][j+stepsize][2];
322 vArray[(a*54)+(b*54*patch_size/stepsize)+c+51]=colors[i+stepsize][j+stepsize][3];
323 vArray[(a*54)+(b*54*patch_size/stepsize)+c+52]=i*scale*texscale+stepsize*scale*texscale+texoffsetx[i+stepsize][j+stepsize];
324 vArray[(a*54)+(b*54*patch_size/stepsize)+c+53]=j*scale*texscale+stepsize*scale*texscale+texoffsety[i+stepsize][j+stepsize];
325 numtris[whichx][whichy]+=2;
329 maxypatch[whichx][whichy]=-10000;
330 minypatch[whichx][whichy]=10000;
331 for(a=0;a<size/subdivision;a++){
332 for(b=0;b<size/subdivision;b++){
333 if(heightmap[(size/subdivision)*whichx+a][(size/subdivision)*whichy+b]*scale>maxypatch[whichx][whichy]) maxypatch[whichx][whichy]=heightmap[(size/subdivision)*whichx+a][(size/subdivision)*whichy+b]*scale;
334 if(heightmap[(size/subdivision)*whichx+a][(size/subdivision)*whichy+b]*scale<minypatch[whichx][whichy]) minypatch[whichx][whichy]=heightmap[(size/subdivision)*whichx+a][(size/subdivision)*whichy+b]*scale;
337 heightypatch[whichx][whichy]=(maxypatch[whichx][whichy]-minypatch[whichx][whichy]);
338 if(heightypatch[whichx][whichy]<size/subdivision*scale)heightypatch[whichx][whichy]=size/subdivision*scale;
339 avgypatch[whichx][whichy]=(minypatch[whichx][whichy]+maxypatch[whichx][whichy])/2;
341 for(i=whichx*size/subdivision;i<(whichx+1)*size/subdivision-1;i++){
342 for(j=whichy*size/subdivision;j<(whichy+1)*size/subdivision-1;j++){
343 triangles[(i*(size-1)*2)+(j*2)][0].x=i*scale;
344 triangles[(i*(size-1)*2)+(j*2)][0].y=heightmap[i][j]*scale;
345 triangles[(i*(size-1)*2)+(j*2)][0].z=j*scale;
347 triangles[(i*(size-1)*2)+(j*2)][1].x=i*scale;
348 triangles[(i*(size-1)*2)+(j*2)][1].y=heightmap[i][j+1]*scale;
349 triangles[(i*(size-1)*2)+(j*2)][1].z=j*scale+scale;
351 triangles[(i*(size-1)*2)+(j*2)][2].x=i*scale+1*scale;
352 triangles[(i*(size-1)*2)+(j*2)][2].y=heightmap[i+1][j]*scale;
353 triangles[(i*(size-1)*2)+(j*2)][2].z=j*scale;
355 triangles[(i*(size-1)*2)+(j*2)+1][0].x=i*scale+1*scale;
356 triangles[(i*(size-1)*2)+(j*2)+1][0].y=heightmap[i+1][j]*scale;
357 triangles[(i*(size-1)*2)+(j*2)+1][0].z=j*scale;
359 triangles[(i*(size-1)*2)+(j*2)+1][1].x=i*scale;
360 triangles[(i*(size-1)*2)+(j*2)+1][1].y=heightmap[i][j+1]*scale;
361 triangles[(i*(size-1)*2)+(j*2)+1][1].z=j*scale+1*scale;
363 triangles[(i*(size-1)*2)+(j*2)+1][2].x=i*scale+1*scale;
364 triangles[(i*(size-1)*2)+(j*2)+1][2].y=heightmap[i+1][j+1]*scale;
365 triangles[(i*(size-1)*2)+(j*2)+1][2].z=j*scale+1*scale;
372 bool Terrain::load(const char *fileName)
376 static float patch_size;
378 float temptexdetail=texdetail;
379 //LoadTGA( fileName );
381 // Fixing filename so that it works with its own os
382 char * FixedFN = ConvertFileName(fileName);
384 unsigned char fileNamep[256];
385 CopyCStringToPascal(FixedFN, fileNamep);
387 upload_image( fileNamep ,0);
391 int bytesPerPixel=texture.bpp/8;
394 for(i=0;i<(long)(texture.sizeY*texture.sizeX*bytesPerPixel);i++){
396 texture.data[tempnum]=texture.data[i];
402 if(visibleloading) Game::LoadingScreen();
404 texdetail=temptexdetail;
408 /*if ( texture.bpp == 24 )
413 glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
415 if(!terraintexture)glGenTextures( 1, &terraintexture );
416 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
418 glBindTexture( GL_TEXTURE_2D, terraintexture);
419 //glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST );
420 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
422 gluBuild2DMipmaps( GL_TEXTURE_2D, type, texture.sizeX, texture.sizeY, type, GL_UNSIGNED_BYTE, texture.data );
429 heightmap[size-1-i][j]=(float)((texture.data[(i+(j*size))*texture.bpp/8]))/5;
434 if(visibleloading) Game::LoadingScreen();
438 for(i=0;i<subdivision;i++){
439 for(j=0;j<subdivision;j++){
440 textureness[i][j]=-1;
443 if(visibleloading) Game::LoadingScreen();
450 texoffsetx[i][j]=(float)abs(Random()%100)/1200/scale*3;
451 texoffsety[i][j]=(float)abs(Random()%100)/1200/scale*3;
454 if(environment==snowyenvironment){
455 if(j!=0&&heightmap[i][j]-heightmap[i][j-1]>slopeness){ slopeness=heightmap[i][j]-heightmap[i][j-1];}
456 opacityother[i][j]=slopeness*slopeness*2;
457 if(opacityother[i][j]>1)opacityother[i][j]=1;
458 opacityother[i][j]-=(float)abs(Random()%100)/300;
460 if(environment==desertenvironment){
461 if(j!=0&&heightmap[i][j]-heightmap[i][j-1]>slopeness){ slopeness=heightmap[i][j]-heightmap[i][j-1];}
462 opacityother[i][j]=slopeness*slopeness*2;
463 if(opacityother[i][j]>1)opacityother[i][j]=1;
464 opacityother[i][j]-=(float)abs(Random()%100)/300;
466 if(environment==grassyenvironment){
467 if(i!=0&&heightmap[i][j]-heightmap[i-1][j]>slopeness){ slopeness=heightmap[i][j]-heightmap[i-1][j];}
468 if(j!=0&&heightmap[i][j]-heightmap[i][j-1]>slopeness){ slopeness=heightmap[i][j]-heightmap[i][j-1];}
469 if(i<size-1&&heightmap[i][j]-heightmap[i+1][j]>slopeness){ slopeness=heightmap[i][j]-heightmap[i+1][j];}
470 if(j<size-1&&heightmap[i][j]-heightmap[i][j+1]>slopeness){ slopeness=heightmap[i][j]-heightmap[i][j+1];}
471 opacityother[i][j]=slopeness*slopeness*10;
472 if(opacityother[i][j]>1)opacityother[i][j]=1;
473 opacityother[i][j]-=(float)abs(Random()%100)/100;
477 if(visibleloading) Game::LoadingScreen();
481 if(environment==snowyenvironment){
482 heightmap[i][j]-=opacityother[i][j];
484 if(environment==desertenvironment){
485 heightmap[i][j]-=opacityother[i][j];
489 if(visibleloading) Game::LoadingScreen();
493 //Smooth opacityother
498 if(i!=0){ total+=opacityother[j][i-1]; todivide++;}
499 if(i!=size-1){ total+=opacityother[j][i+1]; todivide++;}
500 if(j!=0){ total+=opacityother[j-1][i]; todivide++;}
501 if(j!=size-1){ total+=opacityother[j+1][i]; todivide++;}
502 if(i!=0&&j!=0){ total+=opacityother[j-1][i-1]; todivide++;}
503 if(i!=size-1&&j!=0){ total+=opacityother[j-1][i+1]; todivide++;}
504 if(j!=size-1&&i!=size-1){ total+=opacityother[j+1][i+1]; todivide++;}
505 if(j!=size-1&&i!=0){ total+=opacityother[j+1][i-1]; todivide++;}
506 total+=opacityother[j][i]; todivide++;
508 opacityother[j][i]=total/(float)todivide;
515 if(opacityother[i][j]<.1)opacityother[i][j]=0;
516 if(textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==-1){
517 if(!opacityother[i][j])textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=allfirst;
518 if(opacityother[i][j]==1)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=allsecond;
520 if(opacityother[i][j]&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allfirst)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
521 if(opacityother[i][j]!=1&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allsecond)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
527 if(opacityother[x][y]&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allfirst)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
528 if(opacityother[x][y]!=1&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allsecond)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
529 if(opacityother[i][j]&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allfirst)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
530 if(opacityother[i][j]!=1&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allsecond)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
534 if(opacityother[x][y]&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allfirst)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
535 if(opacityother[x][y]!=1&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allsecond)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
536 if(opacityother[i][j]&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allfirst)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
537 if(opacityother[i][j]!=1&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allsecond)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
543 if(opacityother[x][y]&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allfirst)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
544 if(opacityother[x][y]!=1&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allsecond)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
545 if(opacityother[i][j]&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allfirst)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
546 if(opacityother[i][j]!=1&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allsecond)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
554 if(opacityother[x][y]&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allfirst)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
555 if(opacityother[x][y]!=1&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allsecond)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
556 if(opacityother[i][j]&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allfirst)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
557 if(opacityother[i][j]!=1&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allsecond)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
561 if(opacityother[x][y]&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allfirst)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
562 if(opacityother[x][y]!=1&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allsecond)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
563 if(opacityother[i][j]&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allfirst)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
564 if(opacityother[i][j]!=1&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allsecond)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
570 if(opacityother[x][y]&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allfirst)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
571 if(opacityother[x][y]!=1&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allsecond)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
572 if(opacityother[i][j]&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allfirst)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
573 if(opacityother[i][j]!=1&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allsecond)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
581 if(opacityother[x][y]&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allfirst)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
582 if(opacityother[x][y]!=1&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allsecond)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
583 if(opacityother[i][j]&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allfirst)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
584 if(opacityother[i][j]!=1&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allsecond)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
590 if(opacityother[x][y]&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allfirst)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
591 if(opacityother[x][y]!=1&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allsecond)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
592 if(opacityother[i][j]&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allfirst)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
593 if(opacityother[i][j]!=1&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allsecond)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
599 if(visibleloading) Game::LoadingScreen();
601 patch_size=size/subdivision;
602 patch_elements=(patch_size)*(patch_size)*54;
606 for(i=0;i<subdivision;i++){
607 for(j=0;j<subdivision;j++){
608 UpdateVertexArray(i,j);
615 void Terrain::CalculateNormals()
618 static XYZ facenormal;
619 static XYZ p,q,a,b,c;
621 for(i=0; i<size; i++){
622 for(j=0; j<size; j++){
629 for(i=0;i<size-1;i++){
630 for(j=0;j<size-1;j++){
635 b.y=heightmap[i][j+1];
638 c.y=heightmap[i+1][j];
648 CrossProduct(&p,&q,&facenormal);
650 facenormals[i][j]=facenormal;
652 normals[i][j]=normals[i][j]+facenormal;
653 normals[i][j+1]=normals[i][j+1]+facenormal;
654 normals[i+1][j]=normals[i+1][j]+facenormal;
658 a.y=heightmap[i+1][j];
661 b.y=heightmap[i][j+1];
664 c.y=heightmap[i+1][j+1];
674 CrossProduct(&p,&q,&facenormal);
676 normals[i+1][j+1]=normals[i+1][j+1]+facenormal;
677 normals[i][j+1]=normals[i][j+1]+facenormal;
678 normals[i+1][j]=normals[i+1][j]+facenormal;
680 Normalise(&facenormals[i][j]);
684 for(i=0; i<size; i++){
685 for(j=0; j<size; j++){
686 Normalise(&normals[i][j]);
687 normals[i][j]=normals[i][j];
692 void Terrain::drawpatch(int whichx, int whichy, float opacity){
693 if(opacity>=1)glDisable(GL_BLEND);
696 UpdateTransparency(whichx,whichy);
699 //Set up vertex array
700 glEnableClientState(GL_VERTEX_ARRAY);
701 glEnableClientState(GL_COLOR_ARRAY);
702 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
703 glVertexPointer(3, GL_FLOAT, 9*sizeof(GLfloat),&vArray[0+whichx*patch_elements+whichy*patch_elements*subdivision]);
704 glColorPointer(4,GL_FLOAT, 9*sizeof(GLfloat),&vArray[3+whichx*patch_elements+whichy*patch_elements*subdivision]);
705 glTexCoordPointer(2, GL_FLOAT, 9*sizeof(GLfloat),&vArray[7+whichx*patch_elements+whichy*patch_elements*subdivision]);
708 glDrawArrays(GL_TRIANGLES, 0, numtris[whichx][whichy]*3);
710 glDisableClientState(GL_VERTEX_ARRAY);
711 glDisableClientState(GL_COLOR_ARRAY);
712 glDisableClientState(GL_TEXTURE_COORD_ARRAY);
715 void Terrain::drawpatchother(int whichx, int whichy, float opacity){
718 UpdateTransparency(whichx,whichy);
720 UpdateTransparencyother(whichx,whichy);
722 //Set up vertex array
723 glEnableClientState(GL_VERTEX_ARRAY);
724 glEnableClientState(GL_COLOR_ARRAY);
725 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
726 glVertexPointer(3, GL_FLOAT, 9*sizeof(GLfloat),&vArray[0+whichx*patch_elements+whichy*patch_elements*subdivision]);
727 glColorPointer(4,GL_FLOAT, 9*sizeof(GLfloat),&vArray[3+whichx*patch_elements+whichy*patch_elements*subdivision]);
728 glTexCoordPointer(2, GL_FLOAT, 9*sizeof(GLfloat),&vArray[7+whichx*patch_elements+whichy*patch_elements*subdivision]);
731 glDrawArrays(GL_TRIANGLES, 0, numtris[whichx][whichy]*3);
733 glDisableClientState(GL_VERTEX_ARRAY);
734 glDisableClientState(GL_COLOR_ARRAY);
735 glDisableClientState(GL_TEXTURE_COORD_ARRAY);
738 void Terrain::drawpatchotherother(int whichx, int whichy, float opacity){
740 UpdateTransparencyotherother(whichx,whichy);
742 glMatrixMode(GL_TEXTURE);
748 //Set up vertex array
749 glEnableClientState(GL_VERTEX_ARRAY);
750 glEnableClientState(GL_COLOR_ARRAY);
751 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
752 glVertexPointer(3, GL_FLOAT, 9*sizeof(GLfloat),&vArray[0+whichx*patch_elements+whichy*patch_elements*subdivision]);
753 glColorPointer(4,GL_FLOAT, 9*sizeof(GLfloat),&vArray[3+whichx*patch_elements+whichy*patch_elements*subdivision]);
754 glTexCoordPointer(2, GL_FLOAT, 9*sizeof(GLfloat),&vArray[7+whichx*patch_elements+whichy*patch_elements*subdivision]);
757 glDrawArrays(GL_TRIANGLES, 0, numtris[whichx][whichy]*3);
759 glDisableClientState(GL_VERTEX_ARRAY);
760 glDisableClientState(GL_COLOR_ARRAY);
761 glDisableClientState(GL_TEXTURE_COORD_ARRAY);
764 glMatrixMode(GL_MODELVIEW);
768 float Terrain::getHeight(float pointx, float pointz)
770 static float height1,height2;
771 static int tilex,tiley;
772 static XYZ startpoint,endpoint,intersect,triangle[3],average;
777 if(pointx>=size-1||pointz>=size-1||pointx<=0||pointz<=0)return 0;
791 triangle[0].y=heightmap[tilex][tiley];
793 triangle[1].x=tilex+1;
795 triangle[1].y=heightmap[tilex+1][tiley];
798 triangle[2].z=tiley+1;
799 triangle[2].y=heightmap[tilex][tiley+1];
801 if(!LineFacetd(&startpoint,&endpoint,&triangle[0],&triangle[1],&triangle[2],&intersect)){
802 triangle[0].x=tilex+1;
804 triangle[0].y=heightmap[tilex+1][tiley];
806 triangle[1].x=tilex+1;
807 triangle[1].z=tiley+1;
808 triangle[1].y=heightmap[tilex+1][tiley+1];
811 triangle[2].z=tiley+1;
812 triangle[2].y=heightmap[tilex][tiley+1];
813 LineFacetd(&startpoint,&endpoint,&triangle[0],&triangle[1],&triangle[2],&intersect);
815 return intersect.y*scale+getOpacity(pointx*scale,pointz*scale)/8;
817 //height1=heightmap[tilex][tiley]*(1-(pointx-tilex))+heightmap[tilex+1][tiley]*(pointx-tilex);
818 //height2=heightmap[tilex][tiley+1]*(1-(pointx-tilex))+heightmap[tilex+1][tiley+1]*(pointx-tilex);
820 //return height1*(1-(pointz-tiley))*scale+height2*(pointz-tiley)*scale;
823 float Terrain::getHeightExtrude(float pointx, float pointz,float point2x, float point2z)
825 static float height1,height2;
826 static int tilex,tiley;
827 static XYZ startpoint,endpoint,intersect,triangle[3],average;
834 if(pointx>=size-1||pointz>=size-1||pointx<=0||pointz<=0)return 0;
835 if(point2x>=size-1||point2z>=size-1||point2x<=0||point2z<=0)return 0;
837 startpoint.x=point2x;
839 startpoint.z=point2z;
849 triangle[0].y=heightmap[tilex][tiley];
851 triangle[1].x=tilex+1;
853 triangle[1].y=heightmap[tilex+1][tiley];
856 triangle[2].z=tiley+1;
857 triangle[2].y=heightmap[tilex][tiley+1];
861 mid=(triangle[0]+triangle[1]+triangle[2])/2;
863 triangle[0]=mid+(triangle[0]-mid)*10;
864 triangle[1]=mid+(triangle[0]-mid)*10;
865 triangle[2]=mid+(triangle[0]-mid)*10;
868 if(!LineFacetd(&startpoint,&endpoint,&triangle[0],&triangle[1],&triangle[2],&intersect)){
869 triangle[0].x=tilex+1;
871 triangle[0].y=heightmap[tilex+1][tiley];
873 triangle[1].x=tilex+1;
874 triangle[1].z=tiley+1;
875 triangle[1].y=heightmap[tilex+1][tiley+1];
878 triangle[2].z=tiley+1;
879 triangle[2].y=heightmap[tilex][tiley+1];
880 LineFacetd(&startpoint,&endpoint,&triangle[0],&triangle[1],&triangle[2],&intersect);
882 return intersect.y*scale+getOpacity(pointx*scale,pointz*scale)/8;
884 //height1=heightmap[tilex][tiley]*(1-(pointx-tilex))+heightmap[tilex+1][tiley]*(pointx-tilex);
885 //height2=heightmap[tilex][tiley+1]*(1-(pointx-tilex))+heightmap[tilex+1][tiley+1]*(pointx-tilex);
887 //return height1*(1-(pointz-tiley))*scale+height2*(pointz-tiley)*scale;
891 float Terrain::getOpacity(float pointx, float pointz)
893 static float height1,height2;
894 static int tilex,tiley;
899 if(pointx>=size-1||pointz>=size-1||pointx<=0||pointz<=0)return 0;
904 height1=opacityother[tilex][tiley]*(1-(pointx-tilex))+opacityother[tilex+1][tiley]*(pointx-tilex);
905 height2=opacityother[tilex][tiley+1]*(1-(pointx-tilex))+opacityother[tilex+1][tiley+1]*(pointx-tilex);
907 return height1*(1-(pointz-tiley))+height2*(pointz-tiley);
910 XYZ Terrain::getNormal(float pointx, float pointz)
912 static XYZ height1,height2,total;
913 static int tilex,tiley;
919 if(pointx>=size-1||pointz>=size-1||pointx<=0||pointz<=0)return height1;
923 height1=normals[tilex][tiley]*(1-(pointx-tilex))+normals[tilex+1][tiley]*(pointx-tilex);
924 height2=normals[tilex][tiley+1]*(1-(pointx-tilex))+normals[tilex+1][tiley+1]*(pointx-tilex);
925 total=height1*(1-(pointz-tiley))+height2*(pointz-tiley);
930 XYZ Terrain::getLighting(float pointx, float pointz)
932 static XYZ height1,height2;
933 static int tilex,tiley;
939 if(pointx>=size-1||pointz>=size-1||pointx<=0||pointz<=0)return height1;
943 height1.x=colors[tilex][tiley][0]*(1-(pointx-tilex))+colors[tilex+1][tiley][0]*(pointx-tilex);
944 height1.y=colors[tilex][tiley][1]*(1-(pointx-tilex))+colors[tilex+1][tiley][1]*(pointx-tilex);
945 height1.z=colors[tilex][tiley][2]*(1-(pointx-tilex))+colors[tilex+1][tiley][2]*(pointx-tilex);
946 height2.x=colors[tilex][tiley+1][0]*(1-(pointx-tilex))+colors[tilex+1][tiley+1][0]*(pointx-tilex);
947 height2.y=colors[tilex][tiley+1][1]*(1-(pointx-tilex))+colors[tilex+1][tiley+1][1]*(pointx-tilex);
948 height2.z=colors[tilex][tiley+1][2]*(1-(pointx-tilex))+colors[tilex+1][tiley+1][2]*(pointx-tilex);
950 return height1*(1-(pointz-tiley))+height2*(pointz-tiley);
953 void Terrain::draw(int layer)
956 static float opacity;
957 static XYZ terrainpoint;
958 static float distance[subdivision][subdivision];
960 static int beginx,endx;
961 static int beginz,endz;
963 static float patch_size=size/subdivision*scale;
964 static float viewdistsquared;
966 viewdistsquared=viewdistance*viewdistance;
969 beginx=(viewer.x-viewdistance)/(patch_size)-1;
970 if(beginx<0)beginx=0;
971 beginz=(viewer.z-viewdistance)/(patch_size)-1;
972 if(beginz<0)beginz=0;
974 endx=(viewer.x+viewdistance)/(patch_size)+1;
975 if(endx>subdivision)endx=subdivision;
976 endz=(viewer.z+viewdistance)/(patch_size)+1;
977 if(endz>subdivision)endz=subdivision;
980 for(i=beginx;i<endx;i++){
981 for(j=beginz;j<endz;j++){
982 terrainpoint.x=i*patch_size+(patch_size)/2;
983 terrainpoint.y=viewer.y;//heightmap[i][j]*scale;
984 terrainpoint.z=j*patch_size+(patch_size)/2;
985 distance[i][j]=findDistancefast(&viewer,&terrainpoint);
989 for(i=beginx;i<endx;i++){
990 for(j=beginz;j<endz;j++){
991 if(distance[i][j]<(viewdistance+patch_size)*(viewdistance+patch_size)){
993 if(distance[i][j]>viewdistsquared*fadestart-viewdistsquared)
995 if(opacity==1&&i!=subdivision)
996 if(distance[i+1][j]>viewdistsquared*fadestart-viewdistsquared)
998 if(opacity==1&&j!=subdivision)
999 if(distance[i][j+1]>viewdistsquared*fadestart-viewdistsquared)
1001 if(opacity==1&&j!=subdivision&&i!=subdivision)
1002 if(distance[i+1][j+1]>viewdistsquared*fadestart-viewdistsquared)
1004 glMatrixMode(GL_MODELVIEW); // Select The Modelview Matrix
1006 if(frustum.CubeInFrustum(i*patch_size+patch_size*.5,avgypatch[i][j],j*patch_size+patch_size*.5,heightypatch[i][j]/2))
1008 if(environment==desertenvironment&&distance[i][j]>viewdistsquared/4)
1009 glTexEnvf( GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, blurness);
1010 else if(environment==desertenvironment)
1011 glTexEnvf( GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, 0 );
1012 if(!layer&&textureness[i][j]!=allsecond)
1013 drawpatch(i,j,opacity);
1014 if(layer==1&&textureness[i][j]!=allfirst)
1015 drawpatchother(i,j,opacity);
1016 if(layer==2&&textureness[i][j]!=allfirst)
1017 drawpatchotherother(i,j,opacity);
1023 if(environment==desertenvironment)
1024 glTexEnvf( GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, 0 );
1027 void Terrain::drawdecals()
1031 static float distancemult;
1032 static int lasttype;
1034 static float patch_size=size/subdivision*scale;
1035 static float viewdistsquared;
1038 viewdistsquared=viewdistance*viewdistance;
1043 glDisable(GL_LIGHTING);
1044 glDisable(GL_CULL_FACE);
1045 glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
1047 for(i=0;i<numdecals;i++){
1048 if(decaltype[i]==blooddecalfast&&decalalivetime[i]<2)decalalivetime[i]=2;
1049 if((decaltype[i]==shadowdecal||decaltype[i]==shadowdecalpermanent)&&decaltype[i]!=lasttype){
1050 glBindTexture( GL_TEXTURE_2D, shadowtexture);
1053 glAlphaFunc(GL_GREATER, 0.0001);
1054 glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
1057 if(decaltype[i]==footprintdecal&&decaltype[i]!=lasttype){
1058 glBindTexture( GL_TEXTURE_2D, footprinttexture);
1061 glAlphaFunc(GL_GREATER, 0.0001);
1062 glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
1065 if(decaltype[i]==bodyprintdecal&&decaltype[i]!=lasttype){
1066 glBindTexture( GL_TEXTURE_2D, bodyprinttexture);
1069 glAlphaFunc(GL_GREATER, 0.0001);
1070 glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
1073 if((decaltype[i]==blooddecal||decaltype[i]==blooddecalslow)&&decaltype[i]!=lasttype){
1074 glBindTexture( GL_TEXTURE_2D, bloodtexture);
1077 glAlphaFunc(GL_GREATER, 0.15);
1078 glBlendFunc(GL_ONE,GL_ZERO);
1081 if((decaltype[i]==blooddecalfast)&&decaltype[i]!=lasttype){
1082 glBindTexture( GL_TEXTURE_2D, bloodtexture2);
1085 glAlphaFunc(GL_GREATER, 0.15);
1086 glBlendFunc(GL_ONE,GL_ZERO);
1089 if(decaltype[i]==shadowdecal||decaltype[i]==shadowdecalpermanent){
1090 distancemult=(viewdistsquared-(findDistancefast(&viewer,&decalposition[i])-(viewdistsquared*fadestart))*(1/(1-fadestart)))/viewdistsquared;
1091 if(distancemult>=1)glColor4f(1,1,1,decalopacity[i]);
1092 if(distancemult<1)glColor4f(1,1,1,decalopacity[i]*distancemult);
1094 if(decaltype[i]==footprintdecal||decaltype[i]==bodyprintdecal){
1095 distancemult=(viewdistsquared-(findDistancefast(&viewer,&decalposition[i])-(viewdistsquared*fadestart))*(1/(1-fadestart)))/viewdistsquared;
1096 if(distancemult>=1){
1097 glColor4f(1,1,1,decalopacity[i]);
1098 if(decalalivetime[i]>3)glColor4f(1,1,1,decalopacity[i]*(5-decalalivetime[i])/2);
1101 glColor4f(1,1,1,decalopacity[i]*distancemult);
1102 if(decalalivetime[i]>3)glColor4f(1,1,1,decalopacity[i]*(5-decalalivetime[i])/2*distancemult);
1105 if((decaltype[i]==blooddecal||decaltype[i]==blooddecalfast||decaltype[i]==blooddecalslow)){
1106 distancemult=(viewdistsquared-(findDistancefast(&viewer,&decalposition[i])-(viewdistsquared*fadestart))*(1/(1-fadestart)))/viewdistsquared;
1107 if(distancemult>=1){
1108 glColor4f(decalbrightness[i],decalbrightness[i],decalbrightness[i],decalopacity[i]);
1109 if(decalalivetime[i]<4)glColor4f(decalbrightness[i],decalbrightness[i],decalbrightness[i],decalopacity[i]*decalalivetime[i]*.25);
1110 if(decalalivetime[i]>58)glColor4f(decalbrightness[i],decalbrightness[i],decalbrightness[i],decalopacity[i]*(60-decalalivetime[i])/2);
1113 glColor4f(decalbrightness[i],decalbrightness[i],decalbrightness[i],decalopacity[i]*distancemult);
1114 if(decalalivetime[i]<4)glColor4f(decalbrightness[i],decalbrightness[i],decalbrightness[i],decalopacity[i]*decalalivetime[i]*distancemult*.25);
1115 if(decalalivetime[i]>58)glColor4f(decalbrightness[i],decalbrightness[i],decalbrightness[i],decalopacity[i]*(60-decalalivetime[i])/2*distancemult);
1118 lasttype=decaltype[i];
1119 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
1120 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
1122 glMatrixMode(GL_MODELVIEW); // Select The Modelview Matrix
1124 glBegin(GL_TRIANGLES);
1125 for(int j=0;j<3;j++)
1127 glTexCoord2f(decaltexcoords[i][j][0], decaltexcoords[i][j][1]); glVertex3f(decalvertex[i][j].x,decalvertex[i][j].y,decalvertex[i][j].z);
1132 for(i=numdecals-1;i>=0;i--){
1133 decalalivetime[i]+=multiplier;
1134 if(decaltype[i]==blooddecalslow)decalalivetime[i]-=multiplier*2/3;
1135 if(decaltype[i]==blooddecalfast)decalalivetime[i]+=multiplier*4;
1136 if(decaltype[i]==shadowdecal)DeleteDecal(i);
1137 if(decaltype[i]==footprintdecal&&decalalivetime[i]>=5)DeleteDecal(i);
1138 if(decaltype[i]==bodyprintdecal&&decalalivetime[i]>=5)DeleteDecal(i);
1139 if((decaltype[i]==blooddecal||decaltype[i]==blooddecalfast||decaltype[i]==blooddecalslow)&&decalalivetime[i]>=60)DeleteDecal(i);
1141 glAlphaFunc(GL_GREATER, 0.0001);
1145 void Terrain::AddObject(XYZ where, float radius, int id)
1151 for(i=0;i<subdivision;i++){
1152 for(j=0;j<subdivision;j++){
1153 if(patchobjectnum[i][j]<300-1){
1155 points[0].x=(size/subdivision)*i;
1156 points[0].z=(size/subdivision)*j;
1157 points[0].y=heightmap[(int)points[0].x][(int)points[0].z];
1158 points[1].x=(size/subdivision)*(i+1);
1159 points[1].z=(size/subdivision)*j;
1160 points[1].y=heightmap[(int)points[1].x][(int)points[1].z];
1161 points[2].x=(size/subdivision)*(i+1);
1162 points[2].z=(size/subdivision)*(j+1);
1163 points[2].y=heightmap[(int)points[2].x][(int)points[2].z];
1164 points[3].x=(size/subdivision)*i;
1165 points[3].z=(size/subdivision)*(j+1);
1166 points[3].y=heightmap[(int)points[3].x][(int)points[3].z];
1171 if(!done&&where.x+radius>points[0].x&&where.x-radius<points[2].x&&where.z+radius>points[0].z&&where.z-radius<points[2].z){
1172 patchobjects[i][j][patchobjectnum[i][j]]=id;
1173 patchobjectnum[i][j]++;
1181 void Terrain::DeleteDecal(int which)
1184 decaltype[which]=decaltype[numdecals-1];
1185 decalposition[which]=decalposition[numdecals-1];
1186 for(int i=0;i<3;i++){
1187 decalvertex[which][i]=decalvertex[numdecals-1][i];
1188 decaltexcoords[which][i][0]=decaltexcoords[numdecals-1][i][0];
1189 decaltexcoords[which][i][1]=decaltexcoords[numdecals-1][i][1];
1191 decalrotation[which]=decalrotation[numdecals-1];
1192 decalalivetime[which]=decalalivetime[numdecals-1];
1193 decalopacity[which]=decalopacity[numdecals-1];
1194 decalbrightness[which]=decalbrightness[numdecals-1];
1199 void Terrain::MakeDecal(int type, XYZ where, float size, float opacity, float rotation){
1201 if(opacity>0&&size>0) {
1202 static int patchx[4];
1203 static int patchy[4];
1205 decaltexcoords[numdecals][0][0]=1;
1206 decaltexcoords[numdecals][0][1]=0;
1208 patchx[0]=(where.x+size)/scale;
1209 patchx[1]=(where.x-size)/scale;
1210 patchx[2]=(where.x-size)/scale;
1211 patchx[3]=(where.x+size)/scale;
1213 patchy[0]=(where.z-size)/scale;
1214 patchy[1]=(where.z-size)/scale;
1215 patchy[2]=(where.z+size)/scale;
1216 patchy[3]=(where.z+size)/scale;
1218 /*if(patchx[1]<subdivision-1&&patchy[1]<subdivision-1&&patchx[1]>0&&patchy[1]>0)
1219 if(patchx[2]<subdivision-1&&patchy[2]<subdivision-1&&patchx[2]>0&&patchy[2]>0)
1220 if(patchx[3]<subdivision-1&&patchy[3]<subdivision-1&&patchx[3]>0&&patchy[3]>0)
1221 if(patchx[0]<subdivision-1&&patchy[0]<subdivision-1&&patchx[0]>0&&patchy[0]>0){
1223 if((patchx[0]!=patchx[1]||patchy[0]!=patchy[1])&&(patchx[0]!=patchx[2]||patchy[0]!=patchy[2])&&(patchx[0]!=patchx[3]||patchy[0]!=patchy[3])){
1224 MakeDecalLock(type,where,patchx[0],patchy[0],size,opacity,rotation);
1227 if((patchx[1]!=patchx[2]||patchy[1]!=patchy[2])&&(patchx[1]!=patchx[3]||patchy[1]!=patchy[3])){
1228 MakeDecalLock(type,where,patchx[1],patchy[1],size,opacity,rotation);
1231 if((patchx[2]!=patchx[3]||patchy[2]!=patchy[3])){
1232 MakeDecalLock(type,where,patchx[2],patchy[2],size,opacity,rotation);
1234 MakeDecalLock(type,where,patchx[3],patchy[3],size,opacity,rotation);
1240 void Terrain::MakeDecalLock(int type, XYZ where,int whichx, int whichy, float size, float opacity, float rotation){
1242 static float placex,placez;
1247 rot=getLighting(where.x,where.z);
1248 decalbrightness[numdecals]=(rot.x+rot.y+rot.z)/3;
1249 if(decalbrightness[numdecals]<.4)decalbrightness[numdecals]=.4;
1251 if(environment==grassyenvironment){
1252 decalbrightness[numdecals]*=.6;
1255 if(decalbrightness[numdecals]>1)decalbrightness[numdecals]=1;
1256 decalbright=decalbrightness[numdecals];
1258 decalposition[numdecals]=where;
1259 decaltype[numdecals]=type;
1260 decalopacity[numdecals]=opacity;
1261 decalrotation[numdecals]=rotation;
1262 decalalivetime[numdecals]=0;
1264 placex=(float)whichx*scale+scale;
1265 placez=(float)whichy*scale;
1267 decaltexcoords[numdecals][0][0]=(placex-where.x)/size/2+.5;
1268 decaltexcoords[numdecals][0][1]=(placez-where.z)/size/2+.5;
1270 decalvertex[numdecals][0].x=placex;
1271 decalvertex[numdecals][0].z=placez;
1272 decalvertex[numdecals][0].y=heightmap[whichx+1][whichy]*scale+.01;
1275 placex=(float)whichx*scale+scale;
1276 placez=(float)whichy*scale+scale;
1278 decaltexcoords[numdecals][1][0]=(placex-where.x)/size/2+.5;
1279 decaltexcoords[numdecals][1][1]=(placez-where.z)/size/2+.5;
1281 decalvertex[numdecals][1].x=placex;
1282 decalvertex[numdecals][1].z=placez;
1283 decalvertex[numdecals][1].y=heightmap[whichx+1][whichy+1]*scale+.01;
1286 placex=(float)whichx*scale;
1287 placez=(float)whichy*scale+scale;
1289 decaltexcoords[numdecals][2][0]=(placex-where.x)/size/2+.5;
1290 decaltexcoords[numdecals][2][1]=(placez-where.z)/size/2+.5;
1292 decalvertex[numdecals][2].x=placex;
1293 decalvertex[numdecals][2].z=placez;
1294 decalvertex[numdecals][2].y=heightmap[whichx][whichy+1]*scale+.01;
1296 if(decalrotation[numdecals]){
1297 for(int i=0;i<3;i++){
1299 rot.x=decaltexcoords[numdecals][i][0]-.5;
1300 rot.z=decaltexcoords[numdecals][i][1]-.5;
1301 rot=DoRotation(rot,0,-decalrotation[numdecals],0);
1302 decaltexcoords[numdecals][i][0]=rot.x+.5;
1303 decaltexcoords[numdecals][i][1]=rot.z+.5;
1307 if(!(decaltexcoords[numdecals][0][0]<0&&decaltexcoords[numdecals][1][0]<0&&decaltexcoords[numdecals][2][0]<0))
1308 if(!(decaltexcoords[numdecals][0][1]<0&&decaltexcoords[numdecals][1][1]<0&&decaltexcoords[numdecals][2][1]<0))
1309 if(!(decaltexcoords[numdecals][0][0]>1&&decaltexcoords[numdecals][1][0]>1&&decaltexcoords[numdecals][2][0]>1))
1310 if(!(decaltexcoords[numdecals][0][1]>1&&decaltexcoords[numdecals][1][1]>1&&decaltexcoords[numdecals][2][1]>1))
1311 if(numdecals<max_decals-1)numdecals++;
1313 decalbrightness[numdecals]=decalbright;
1315 decalposition[numdecals]=where;
1316 decaltype[numdecals]=type;
1317 decalopacity[numdecals]=opacity;
1318 decalrotation[numdecals]=rotation;
1319 decalalivetime[numdecals]=0;
1321 placex=(float)whichx*scale+scale;
1322 placez=(float)whichy*scale;
1324 decaltexcoords[numdecals][0][0]=(placex-where.x)/size/2+.5;
1325 decaltexcoords[numdecals][0][1]=(placez-where.z)/size/2+.5;
1327 decalvertex[numdecals][0].x=placex;
1328 decalvertex[numdecals][0].z=placez;
1329 decalvertex[numdecals][0].y=heightmap[whichx+1][whichy]*scale+.01;
1332 placex=(float)whichx*scale;
1333 placez=(float)whichy*scale;
1335 decaltexcoords[numdecals][1][0]=(placex-where.x)/size/2+.5;
1336 decaltexcoords[numdecals][1][1]=(placez-where.z)/size/2+.5;
1338 decalvertex[numdecals][1].x=placex;
1339 decalvertex[numdecals][1].z=placez;
1340 decalvertex[numdecals][1].y=heightmap[whichx][whichy]*scale+.01;
1343 placex=(float)whichx*scale;
1344 placez=(float)whichy*scale+scale;
1346 decaltexcoords[numdecals][2][0]=(placex-where.x)/size/2+.5;
1347 decaltexcoords[numdecals][2][1]=(placez-where.z)/size/2+.5;
1349 decalvertex[numdecals][2].x=placex;
1350 decalvertex[numdecals][2].z=placez;
1351 decalvertex[numdecals][2].y=heightmap[whichx][whichy+1]*scale+.01;
1353 if(decalrotation[numdecals]){
1354 for(int i=0;i<3;i++){
1356 rot.x=decaltexcoords[numdecals][i][0]-.5;
1357 rot.z=decaltexcoords[numdecals][i][1]-.5;
1358 rot=DoRotation(rot,0,-decalrotation[numdecals],0);
1359 decaltexcoords[numdecals][i][0]=rot.x+.5;
1360 decaltexcoords[numdecals][i][1]=rot.z+.5;
1364 if(!(decaltexcoords[numdecals][0][0]<0&&decaltexcoords[numdecals][1][0]<0&&decaltexcoords[numdecals][2][0]<0))
1365 if(!(decaltexcoords[numdecals][0][1]<0&&decaltexcoords[numdecals][1][1]<0&&decaltexcoords[numdecals][2][1]<0))
1366 if(!(decaltexcoords[numdecals][0][0]>1&&decaltexcoords[numdecals][1][0]>1&&decaltexcoords[numdecals][2][0]>1))
1367 if(!(decaltexcoords[numdecals][0][1]>1&&decaltexcoords[numdecals][1][1]>1&&decaltexcoords[numdecals][2][1]>1))
1368 if(numdecals<max_decals-1)numdecals++;
1372 void Terrain::DoLighting()
1374 static int i,j,k,todivide;
1375 static float brightness, total;
1376 static XYZ blank, terrainpoint,lightloc;
1377 lightloc=light.location;
1378 Normalise(&lightloc);
1380 for(i=0;i<size;i++){
1381 for(j=0;j<size;j++){
1382 terrainpoint.x=(float)i*scale;
1383 terrainpoint.z=(float)j*scale;
1384 terrainpoint.y=heightmap[i][j]*scale+.1;
1386 if(lineTerrain(lightlocation*10+terrainpoint,terrainpoint,&blank)==-1)
1388 brightness=dotproduct(&lightloc,&normals[i][j]);
1390 if(brightness>1)brightness=1;
1391 if(brightness<0)brightness=0;
1393 colors[i][j][0]=light.color[0]*brightness+light.ambient[0];
1394 colors[i][j][1]=light.color[1]*brightness+light.ambient[1];
1395 colors[i][j][2]=light.color[2]*brightness+light.ambient[2];
1397 if(colors[i][j][0]>1)colors[i][j][0]=1;
1398 if(colors[i][j][1]>1)colors[i][j][1]=1;
1399 if(colors[i][j][2]>1)colors[i][j][2]=1;
1400 if(colors[i][j][0]<0)colors[i][j][0]=0;
1401 if(colors[i][j][1]<0)colors[i][j][1]=0;
1402 if(colors[i][j][2]<0)colors[i][j][2]=0;
1407 for(i=0;i<size;i++){
1408 for(j=0;j<size;j++){
1412 if(i!=0){ total+=colors[j][i-1][k]; todivide++;}
1413 if(i!=size-1){ total+=colors[j][i+1][k]; todivide++;}
1414 if(j!=0){ total+=colors[j-1][i][k]; todivide++;}
1415 if(j!=size-1){ total+=colors[j+1][i][k]; todivide++;}
1416 if(i!=0&&j!=0){ total+=colors[j-1][i-1][k]; todivide++;}
1417 if(i!=size-1&&j!=0){ total+=colors[j-1][i+1][k]; todivide++;}
1418 if(j!=size-1&&i!=size-1){ total+=colors[j+1][i+1][k]; todivide++;}
1419 if(j!=size-1&&i!=0){ total+=colors[j+1][i-1][k]; todivide++;}
1420 total+=colors[j][i][k]; todivide++;
1422 colors[j][i][k]=total/todivide;
1428 void Terrain::DoShadows()
1430 static int i,j,k,l,todivide;
1431 static float brightness, total;
1432 static XYZ testpoint,testpoint2, terrainpoint,lightloc,col;
1433 lightloc=light.location;
1438 if(skyboxtexture&&tutoriallevel){
1444 Normalise(&lightloc);
1446 for(i=0;i<size;i++){
1447 for(j=0;j<size;j++){
1448 terrainpoint.x=(float)(i)*scale;
1449 terrainpoint.z=(float)(j)*scale;
1450 terrainpoint.y=heightmap[i][j]*scale;
1453 patchx=(float)(i)*subdivision/size;
1454 patchz=(float)(j)*subdivision/size;
1455 if(patchobjectnum[patchx][patchz]){
1456 for(k=0;k<patchobjectnum[patchx][patchz];k++){
1457 l=patchobjects[patchx][patchz][k];
1458 if(objects.type[l]!=treetrunktype){
1459 testpoint=terrainpoint;
1460 testpoint2=terrainpoint+lightloc*50*(1-shadowed);
1461 if(objects.model[l].LineCheck(&testpoint,&testpoint2,&col,&objects.position[l],&objects.yaw[l])!=-1){
1462 shadowed=1-(findDistance(&terrainpoint,&col)/50);
1466 if(visibleloading) Game::LoadingScreen();
1468 brightness=dotproduct(&lightloc,&normals[i][j]);
1469 if(shadowed)brightness*=1-shadowed;
1471 if(brightness>1)brightness=1;
1472 if(brightness<0)brightness=0;
1474 colors[i][j][0]=light.color[0]*brightness+light.ambient[0];
1475 colors[i][j][1]=light.color[1]*brightness+light.ambient[1];
1476 colors[i][j][2]=light.color[2]*brightness+light.ambient[2];
1478 if(colors[i][j][0]>1)colors[i][j][0]=1;
1479 if(colors[i][j][1]>1)colors[i][j][1]=1;
1480 if(colors[i][j][2]>1)colors[i][j][2]=1;
1481 if(colors[i][j][0]<0)colors[i][j][0]=0;
1482 if(colors[i][j][1]<0)colors[i][j][1]=0;
1483 if(colors[i][j][2]<0)colors[i][j][2]=0;
1487 if(visibleloading) Game::LoadingScreen();
1490 for(i=0;i<size;i++){
1491 for(j=0;j<size;j++){
1495 if(i!=0){ total+=colors[j][i-1][k]; todivide++;}
1496 if(i!=size-1){ total+=colors[j][i+1][k]; todivide++;}
1497 if(j!=0){ total+=colors[j-1][i][k]; todivide++;}
1498 if(j!=size-1){ total+=colors[j+1][i][k]; todivide++;}
1499 if(i!=0&&j!=0){ total+=colors[j-1][i-1][k]; todivide++;}
1500 if(i!=size-1&&j!=0){ total+=colors[j-1][i+1][k]; todivide++;}
1501 if(j!=size-1&&i!=size-1){ total+=colors[j+1][i+1][k]; todivide++;}
1502 if(j!=size-1&&i!=0){ total+=colors[j+1][i-1][k]; todivide++;}
1503 total+=colors[j][i][k]; todivide++;
1505 colors[j][i][k]=total/todivide;
1510 for(i=0;i<subdivision;i++){
1511 for(j=0;j<subdivision;j++){
1512 UpdateVertexArray(i,j);
1522 footprinttexture = 0;
1523 bodyprinttexture = 0;
1528 memset(patchobjectnum, 0, sizeof(patchobjectnum));
1529 memset(patchobjects, 0, sizeof(patchobjects));
1533 memset(heightmap, 0, sizeof(heightmap));
1534 memset(normals, 0, sizeof(normals));
1535 memset(facenormals, 0, sizeof(facenormals));
1536 memset(triangles, 0, sizeof(triangles));
1537 memset(colors, 0, sizeof(colors));
1538 memset(opacityother, 0, sizeof(opacityother));
1539 memset(texoffsetx, 0, sizeof(texoffsetx));
1540 memset(texoffsety, 0, sizeof(texoffsety));
1541 memset(numtris, 0, sizeof(numtris));
1542 memset(textureness, 0, sizeof(textureness));
1544 memset(vArray, 0, sizeof(vArray));
1546 memset(visible, 0, sizeof(visible));
1547 memset(avgypatch, 0, sizeof(avgypatch));
1548 memset(maxypatch, 0, sizeof(maxypatch));
1549 memset(minypatch, 0, sizeof(minypatch));
1550 memset(heightypatch, 0, sizeof(heightypatch));
1554 memset(decaltexcoords, 0, sizeof(decaltexcoords));
1555 memset(decalvertex, 0, sizeof(decalvertex));
1556 memset(decaltype, 0, sizeof(decaltype));
1557 memset(decalopacity, 0, sizeof(decalopacity));
1558 memset(decalrotation, 0, sizeof(decalrotation));
1559 memset(decalalivetime, 0, sizeof(decalalivetime));
1560 memset(decalbrightness, 0, sizeof(decalbrightness));
1561 memset(decalposition, 0, sizeof(decalposition));
1566 glDeleteTextures( 1, &terraintexture );
1567 glDeleteTextures( 1, &shadowtexture );
1568 glDeleteTextures( 1, &bodyprinttexture );
1569 glDeleteTextures( 1, &footprinttexture );
1570 glDeleteTextures( 1, &bloodtexture );
1571 glDeleteTextures( 1, &bloodtexture2 );
1572 glDeleteTextures( 1, &breaktexture );