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 lightambient[3],lightbrightness[3];
28 extern float fadestart;
29 extern int environment;
30 extern float texscale;
32 extern float multiplier;
33 extern FRUSTUM frustum;
34 extern float texdetail,terraindetail;
37 extern float blurness;
38 extern float targetblurness;
39 extern Objects objects;
40 extern TGAImageRec texture;
42 extern bool visibleloading;
43 extern bool skyboxtexture;
44 extern int tutoriallevel;
48 int Terrain::lineTerrain(XYZ p1,XYZ p2, XYZ *p)
51 static float distance;
52 static float olddistance;
53 static int intersecting;
54 static int firstintersecting;
56 static int startx,starty;
59 static int numtris=(size-1)*(size-1)*2;
60 static float highest,lowest;
76 if(startx>endx){i=endx;endx=startx;startx=i;}
77 if(starty>endy){i=endy;endy=starty;starty=i;}
81 if(endx>size-1)endx=size-1;
82 if(endy>size-1)endy=size-1;
84 for(i=startx;i<=endx;i++){
85 for(j=starty;j<=endy;j++){
89 if(heightmap[i+k][j]>highest)highest=heightmap[i+k][j];
90 if(heightmap[i+k][j]<lowest)lowest=heightmap[i+k][j];
91 if(heightmap[i+k][j+1]>highest)highest=heightmap[i+k][j+1];
92 if(heightmap[i+k][j+1]<lowest)lowest=heightmap[i+k][j+1];
94 if((p1.y<=highest||p2.y<=highest)&&(p1.y>=lowest||p2.y>=lowest)){
96 triangles[0].y=heightmap[i][j];
100 triangles[1].y=heightmap[i][j+1];
104 triangles[2].y=heightmap[i+1][j];
107 intersecting=LineFacet(p1,p2,triangles[0],triangles[1],triangles[2],&point);
108 distance=findDistancefast(&p1,&point);
109 if((distance<olddistance||firstintersecting==-1)&&intersecting==1){olddistance=distance; firstintersecting=1; *p=point;}
112 triangles[0].y=heightmap[i+1][j];
116 triangles[1].y=heightmap[i][j+1];
120 triangles[2].y=heightmap[i+1][j+1];
123 intersecting=LineFacet(p1,p2,triangles[0],triangles[1],triangles[2],&point);
124 distance=findDistancefast(&p1,&point);
125 if((distance<olddistance||firstintersecting==-1)&&intersecting==1){olddistance=distance; firstintersecting=1; *p=point;}
129 return firstintersecting;
132 void Terrain::UpdateTransparency(int whichx, int whichy){
134 static int i,j,a,b,c,d,patch_size,stepsize;
135 static float distance;
137 static float viewdistsquared;
139 viewdistsquared=viewdistance*viewdistance;
140 patch_size=size/subdivision;
143 c=whichx*patch_elements+whichy*patch_elements*subdivision;
145 for(i=patch_size*whichx;i<patch_size*(whichx+1)+1;i+=stepsize){
146 for(j=patch_size*whichy;j<patch_size*(whichy+1)+1;j+=stepsize){
150 vertex.y=heightmap[i][j]*scale;
151 distance=findDistancefast(&viewer,&vertex);
152 if(distance>viewdistsquared)distance=viewdistsquared;
153 colors[i][j][3]=(viewdistsquared-(distance-(viewdistsquared*fadestart))*(1/(1-fadestart)))/viewdistsquared;
158 for(i=patch_size*whichx;i<patch_size*(whichx+1);i+=stepsize){
159 for(j=patch_size*whichy;j<patch_size*(whichy+1);j+=stepsize){
160 a=(i-(patch_size*whichx))/stepsize;
161 b=(j-(patch_size*whichy))/stepsize;
162 d=(a*54)+(b*54*patch_size/stepsize);
163 vArray[d+c+6]=colors[i][j][3];
165 vArray[d+c+15]=colors[i][j+stepsize][3];
167 vArray[d+c+24]=colors[i+stepsize][j][3];
169 vArray[d+c+33]=colors[i+stepsize][j][3];
171 vArray[d+c+42]=colors[i][j+stepsize][3];
173 vArray[d+c+51]=colors[i+stepsize][j+stepsize][3];
178 void Terrain::UpdateTransparencyother(int whichx, int whichy){
180 static int i,j,a,b,c,d,patch_size,stepsize;
181 static float distance;
183 patch_size=size/subdivision;
186 c=whichx*patch_elements+whichy*patch_elements*subdivision;
188 for(i=patch_size*whichx;i<patch_size*(whichx+1);i+=stepsize){
189 for(j=patch_size*whichy;j<patch_size*(whichy+1);j+=stepsize){
190 a=(i-(patch_size*whichx))/stepsize;
191 b=(j-(patch_size*whichy))/stepsize;
192 d=(a*54)+(b*54*patch_size/stepsize);
193 vArray[d+c+6]=colors[i][j][3]*opacityother[i][j];
195 vArray[d+c+15]=colors[i][j+stepsize][3]*opacityother[i][j+stepsize];
197 vArray[d+c+24]=colors[i+stepsize][j][3]*opacityother[i+stepsize][j];
199 vArray[d+c+33]=colors[i+stepsize][j][3]*opacityother[i+stepsize][j];
201 vArray[d+c+42]=colors[i][j+stepsize][3]*opacityother[i][j+stepsize];
203 vArray[d+c+51]=colors[i+stepsize][j+stepsize][3]*opacityother[i+stepsize][j+stepsize];
208 void Terrain::UpdateTransparencyotherother(int whichx, int whichy){
210 static int i,j,a,b,c,d,patch_size,stepsize;
211 static float distance;
213 static float viewdistsquared;
215 viewdistsquared=viewdistance*viewdistance;
216 patch_size=size/subdivision;
219 c=whichx*patch_elements+whichy*patch_elements*subdivision;
221 for(i=patch_size*whichx;i<patch_size*(whichx+1)+1;i+=stepsize){
222 for(j=patch_size*whichy;j<patch_size*(whichy+1)+1;j+=stepsize){
226 vertex.y=heightmap[i][j]*scale;
227 distance=findDistancefast(&viewer,&vertex);
228 if(distance>viewdistsquared)distance=viewdistsquared;
229 colors[i][j][3]=(viewdistsquared-(distance-(viewdistsquared*fadestart))*(1/(1-fadestart)))/viewdistsquared;
234 for(i=patch_size*whichx;i<patch_size*(whichx+1);i+=stepsize){
235 for(j=patch_size*whichy;j<patch_size*(whichy+1);j+=stepsize){
236 a=(i-(patch_size*whichx))/stepsize;
237 b=(j-(patch_size*whichy))/stepsize;
238 d=(a*54)+(b*54*patch_size/stepsize);
239 vArray[d+c+6]=colors[i][j][3];
241 vArray[d+c+15]=colors[i][j+stepsize][3];
243 vArray[d+c+24]=colors[i+stepsize][j][3];
245 vArray[d+c+33]=colors[i+stepsize][j][3];
247 vArray[d+c+42]=colors[i][j+stepsize][3];
249 vArray[d+c+51]=colors[i+stepsize][j+stepsize][3];
254 void Terrain::UpdateVertexArray(int whichx, int whichy){
255 static int i,j,a,b,c,patch_size,stepsize;
258 numtris[whichx][whichy]=0;
260 patch_size=size/subdivision;
263 c=whichx*patch_elements+whichy*patch_elements*subdivision;
264 for(i=patch_size*whichx;i<patch_size*(whichx+1);i+=stepsize){
265 for(j=patch_size*whichy;j<patch_size*(whichy+1);j+=stepsize){
266 a=(i-((float)size/subdivision*(float)whichx))/stepsize;
267 b=(j-((float)size/subdivision*(float)whichy))/stepsize;
268 vArray[(a*54)+(b*54*patch_size/stepsize)+c+0]=i*scale;
269 vArray[(a*54)+(b*54*patch_size/stepsize)+c+1]=heightmap[i][j]*scale;
270 vArray[(a*54)+(b*54*patch_size/stepsize)+c+2]=j*scale;
271 vArray[(a*54)+(b*54*patch_size/stepsize)+c+3]=colors[i][j][0];
272 vArray[(a*54)+(b*54*patch_size/stepsize)+c+4]=colors[i][j][1];
273 vArray[(a*54)+(b*54*patch_size/stepsize)+c+5]=colors[i][j][2];
274 vArray[(a*54)+(b*54*patch_size/stepsize)+c+6]=colors[i][j][3];
275 vArray[(a*54)+(b*54*patch_size/stepsize)+c+7]=i*scale*texscale+texoffsetx[i][j];
276 vArray[(a*54)+(b*54*patch_size/stepsize)+c+8]=j*scale*texscale+texoffsety[i][j];
278 vArray[(a*54)+(b*54*patch_size/stepsize)+c+9]=i*scale;
279 vArray[(a*54)+(b*54*patch_size/stepsize)+c+10]=heightmap[i][j+stepsize]*scale;
280 vArray[(a*54)+(b*54*patch_size/stepsize)+c+11]=j*scale+stepsize*scale;
281 vArray[(a*54)+(b*54*patch_size/stepsize)+c+12]=colors[i][j+stepsize][0];
282 vArray[(a*54)+(b*54*patch_size/stepsize)+c+13]=colors[i][j+stepsize][1];
283 vArray[(a*54)+(b*54*patch_size/stepsize)+c+14]=colors[i][j+stepsize][2];
284 vArray[(a*54)+(b*54*patch_size/stepsize)+c+15]=colors[i][j+stepsize][3];
285 vArray[(a*54)+(b*54*patch_size/stepsize)+c+16]=i*scale*texscale+texoffsetx[i][j+stepsize];
286 vArray[(a*54)+(b*54*patch_size/stepsize)+c+17]=j*scale*texscale+stepsize*scale*texscale+texoffsety[i][j+stepsize];
288 vArray[(a*54)+(b*54*patch_size/stepsize)+c+18]=i*scale+stepsize*scale;
289 vArray[(a*54)+(b*54*patch_size/stepsize)+c+19]=heightmap[i+stepsize][j]*scale;
290 vArray[(a*54)+(b*54*patch_size/stepsize)+c+20]=j*scale;
291 vArray[(a*54)+(b*54*patch_size/stepsize)+c+21]=colors[i+stepsize][j][0];
292 vArray[(a*54)+(b*54*patch_size/stepsize)+c+22]=colors[i+stepsize][j][1];
293 vArray[(a*54)+(b*54*patch_size/stepsize)+c+23]=colors[i+stepsize][j][2];
294 vArray[(a*54)+(b*54*patch_size/stepsize)+c+24]=colors[i+stepsize][j][3];
295 vArray[(a*54)+(b*54*patch_size/stepsize)+c+25]=i*scale*texscale+stepsize*scale*texscale+texoffsetx[i+stepsize][j];
296 vArray[(a*54)+(b*54*patch_size/stepsize)+c+26]=j*scale*texscale+texoffsety[i+stepsize][j];
298 vArray[(a*54)+(b*54*patch_size/stepsize)+c+27]=i*scale+stepsize*scale;
299 vArray[(a*54)+(b*54*patch_size/stepsize)+c+28]=heightmap[i+stepsize][j]*scale;
300 vArray[(a*54)+(b*54*patch_size/stepsize)+c+29]=j*scale;
301 vArray[(a*54)+(b*54*patch_size/stepsize)+c+30]=colors[i+stepsize][j][0];
302 vArray[(a*54)+(b*54*patch_size/stepsize)+c+31]=colors[i+stepsize][j][1];
303 vArray[(a*54)+(b*54*patch_size/stepsize)+c+32]=colors[i+stepsize][j][2];
304 vArray[(a*54)+(b*54*patch_size/stepsize)+c+33]=colors[i+stepsize][j][3];
305 vArray[(a*54)+(b*54*patch_size/stepsize)+c+34]=i*scale*texscale+stepsize*scale*texscale+texoffsetx[i+stepsize][j];
306 vArray[(a*54)+(b*54*patch_size/stepsize)+c+35]=j*scale*texscale+texoffsety[i+stepsize][j];
308 vArray[(a*54)+(b*54*patch_size/stepsize)+c+36]=i*scale;
309 vArray[(a*54)+(b*54*patch_size/stepsize)+c+37]=heightmap[i][j+stepsize]*scale;
310 vArray[(a*54)+(b*54*patch_size/stepsize)+c+38]=j*scale+stepsize*scale;
311 vArray[(a*54)+(b*54*patch_size/stepsize)+c+39]=colors[i][j+stepsize][0];
312 vArray[(a*54)+(b*54*patch_size/stepsize)+c+40]=colors[i][j+stepsize][1];
313 vArray[(a*54)+(b*54*patch_size/stepsize)+c+41]=colors[i][j+stepsize][2];
314 vArray[(a*54)+(b*54*patch_size/stepsize)+c+42]=colors[i][j+stepsize][3];
315 vArray[(a*54)+(b*54*patch_size/stepsize)+c+43]=i*scale*texscale+texoffsetx[i][j+stepsize];
316 vArray[(a*54)+(b*54*patch_size/stepsize)+c+44]=j*scale*texscale+stepsize*scale*texscale+texoffsety[i][j+stepsize];
318 vArray[(a*54)+(b*54*patch_size/stepsize)+c+45]=i*scale+stepsize*scale;
319 vArray[(a*54)+(b*54*patch_size/stepsize)+c+46]=heightmap[i+stepsize][j+stepsize]*scale;
320 vArray[(a*54)+(b*54*patch_size/stepsize)+c+47]=j*scale+stepsize*scale;
321 vArray[(a*54)+(b*54*patch_size/stepsize)+c+48]=colors[i+stepsize][j+stepsize][0];
322 vArray[(a*54)+(b*54*patch_size/stepsize)+c+49]=colors[i+stepsize][j+stepsize][1];
323 vArray[(a*54)+(b*54*patch_size/stepsize)+c+50]=colors[i+stepsize][j+stepsize][2];
324 vArray[(a*54)+(b*54*patch_size/stepsize)+c+51]=colors[i+stepsize][j+stepsize][3];
325 vArray[(a*54)+(b*54*patch_size/stepsize)+c+52]=i*scale*texscale+stepsize*scale*texscale+texoffsetx[i+stepsize][j+stepsize];
326 vArray[(a*54)+(b*54*patch_size/stepsize)+c+53]=j*scale*texscale+stepsize*scale*texscale+texoffsety[i+stepsize][j+stepsize];
327 numtris[whichx][whichy]+=2;
331 maxypatch[whichx][whichy]=-10000;
332 minypatch[whichx][whichy]=10000;
333 for(a=0;a<size/subdivision;a++){
334 for(b=0;b<size/subdivision;b++){
335 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;
336 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;
339 heightypatch[whichx][whichy]=(maxypatch[whichx][whichy]-minypatch[whichx][whichy]);
340 if(heightypatch[whichx][whichy]<size/subdivision*scale)heightypatch[whichx][whichy]=size/subdivision*scale;
341 avgypatch[whichx][whichy]=(minypatch[whichx][whichy]+maxypatch[whichx][whichy])/2;
343 for(i=whichx*size/subdivision;i<(whichx+1)*size/subdivision-1;i++){
344 for(j=whichy*size/subdivision;j<(whichy+1)*size/subdivision-1;j++){
345 triangles[(i*(size-1)*2)+(j*2)][0].x=i*scale;
346 triangles[(i*(size-1)*2)+(j*2)][0].y=heightmap[i][j]*scale;
347 triangles[(i*(size-1)*2)+(j*2)][0].z=j*scale;
349 triangles[(i*(size-1)*2)+(j*2)][1].x=i*scale;
350 triangles[(i*(size-1)*2)+(j*2)][1].y=heightmap[i][j+1]*scale;
351 triangles[(i*(size-1)*2)+(j*2)][1].z=j*scale+scale;
353 triangles[(i*(size-1)*2)+(j*2)][2].x=i*scale+1*scale;
354 triangles[(i*(size-1)*2)+(j*2)][2].y=heightmap[i+1][j]*scale;
355 triangles[(i*(size-1)*2)+(j*2)][2].z=j*scale;
357 triangles[(i*(size-1)*2)+(j*2)+1][0].x=i*scale+1*scale;
358 triangles[(i*(size-1)*2)+(j*2)+1][0].y=heightmap[i+1][j]*scale;
359 triangles[(i*(size-1)*2)+(j*2)+1][0].z=j*scale;
361 triangles[(i*(size-1)*2)+(j*2)+1][1].x=i*scale;
362 triangles[(i*(size-1)*2)+(j*2)+1][1].y=heightmap[i][j+1]*scale;
363 triangles[(i*(size-1)*2)+(j*2)+1][1].z=j*scale+1*scale;
365 triangles[(i*(size-1)*2)+(j*2)+1][2].x=i*scale+1*scale;
366 triangles[(i*(size-1)*2)+(j*2)+1][2].y=heightmap[i+1][j+1]*scale;
367 triangles[(i*(size-1)*2)+(j*2)+1][2].z=j*scale+1*scale;
374 bool Terrain::load(const char *fileName)
378 static float patch_size;
380 float temptexdetail=texdetail;
381 texdetail=terraindetail;
382 //LoadTGA( fileName );
383 unsigned char fileNamep[256];
384 CopyCStringToPascal(fileName,fileNamep);
386 upload_image( fileNamep ,0);
390 int bytesPerPixel=texture.bpp/8;
393 for(i=0;i<(long)(texture.sizeY*texture.sizeX*bytesPerPixel);i++){
395 texture.data[tempnum]=texture.data[i];
401 if(visibleloading)pgame->LoadingScreen();
403 texdetail=temptexdetail;
407 /*if ( texture.bpp == 24 )
412 glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
414 if(!terraintexture)glGenTextures( 1, &terraintexture );
415 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
417 glBindTexture( GL_TEXTURE_2D, terraintexture);
418 //glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST );
419 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
421 gluBuild2DMipmaps( GL_TEXTURE_2D, type, texture.sizeX, texture.sizeY, type, GL_UNSIGNED_BYTE, texture.data );
428 heightmap[size-1-i][j]=(float)((texture.data[(i+(j*size))*texture.bpp/8]))/5/terraindetail;
433 if(visibleloading)pgame->LoadingScreen();
437 for(i=0;i<subdivision;i++){
438 for(j=0;j<subdivision;j++){
439 textureness[i][j]=-1;
442 if(visibleloading)pgame->LoadingScreen();
449 texoffsetx[i][j]=(float)abs(Random()%100)/1200/scale*3;
450 texoffsety[i][j]=(float)abs(Random()%100)/1200/scale*3;
453 if(environment==snowyenvironment){
454 if(j!=0&&heightmap[i][j]-heightmap[i][j-1]>slopeness){ slopeness=heightmap[i][j]-heightmap[i][j-1];}
455 opacityother[i][j]=slopeness*slopeness*2;
456 if(opacityother[i][j]>1)opacityother[i][j]=1;
457 opacityother[i][j]-=(float)abs(Random()%100)/300;
459 if(environment==desertenvironment){
460 if(j!=0&&heightmap[i][j]-heightmap[i][j-1]>slopeness){ slopeness=heightmap[i][j]-heightmap[i][j-1];}
461 opacityother[i][j]=slopeness*slopeness*2;
462 if(opacityother[i][j]>1)opacityother[i][j]=1;
463 opacityother[i][j]-=(float)abs(Random()%100)/300;
465 if(environment==grassyenvironment){
466 if(i!=0&&heightmap[i][j]-heightmap[i-1][j]>slopeness){ slopeness=heightmap[i][j]-heightmap[i-1][j];}
467 if(j!=0&&heightmap[i][j]-heightmap[i][j-1]>slopeness){ slopeness=heightmap[i][j]-heightmap[i][j-1];}
468 if(i<size-1&&heightmap[i][j]-heightmap[i+1][j]>slopeness){ slopeness=heightmap[i][j]-heightmap[i+1][j];}
469 if(j<size-1&&heightmap[i][j]-heightmap[i][j+1]>slopeness){ slopeness=heightmap[i][j]-heightmap[i][j+1];}
470 opacityother[i][j]=slopeness*slopeness*10;
471 if(opacityother[i][j]>1)opacityother[i][j]=1;
472 opacityother[i][j]-=(float)abs(Random()%100)/100;
476 if(visibleloading)pgame->LoadingScreen();
480 if(environment==snowyenvironment){
481 heightmap[i][j]-=opacityother[i][j];
483 if(environment==desertenvironment){
484 heightmap[i][j]-=opacityother[i][j];
488 if(visibleloading)pgame->LoadingScreen();
492 //Smooth opacityother
497 if(i!=0){ total+=opacityother[j][i-1]; todivide++;}
498 if(i!=size-1){ total+=opacityother[j][i+1]; todivide++;}
499 if(j!=0){ total+=opacityother[j-1][i]; todivide++;}
500 if(j!=size-1){ total+=opacityother[j+1][i]; todivide++;}
501 if(i!=0&&j!=0){ total+=opacityother[j-1][i-1]; todivide++;}
502 if(i!=size-1&&j!=0){ total+=opacityother[j-1][i+1]; todivide++;}
503 if(j!=size-1&&i!=size-1){ total+=opacityother[j+1][i+1]; todivide++;}
504 if(j!=size-1&&i!=0){ total+=opacityother[j+1][i-1]; todivide++;}
505 total+=opacityother[j][i]; todivide++;
507 opacityother[j][i]=total/(float)todivide;
514 if(opacityother[i][j]<.1)opacityother[i][j]=0;
515 if(textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==-1){
516 if(!opacityother[i][j])textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=allfirst;
517 if(opacityother[i][j]==1)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=allsecond;
519 if(opacityother[i][j]&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allfirst)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
520 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;
526 if(opacityother[x][y]&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allfirst)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
527 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;
528 if(opacityother[i][j]&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allfirst)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
529 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;
533 if(opacityother[x][y]&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allfirst)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
534 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;
535 if(opacityother[i][j]&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allfirst)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
536 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;
542 if(opacityother[x][y]&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allfirst)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
543 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;
544 if(opacityother[i][j]&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allfirst)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
545 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;
553 if(opacityother[x][y]&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allfirst)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
554 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;
555 if(opacityother[i][j]&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allfirst)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
556 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;
560 if(opacityother[x][y]&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allfirst)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
561 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;
562 if(opacityother[i][j]&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allfirst)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
563 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;
569 if(opacityother[x][y]&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allfirst)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
570 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;
571 if(opacityother[i][j]&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allfirst)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
572 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;
580 if(opacityother[x][y]&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allfirst)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
581 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;
582 if(opacityother[i][j]&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allfirst)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
583 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;
589 if(opacityother[x][y]&&textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]==allfirst)textureness[(int)(i*subdivision/size)][(int)(j*subdivision/size)]=mixed;
590 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;
591 if(opacityother[i][j]&&textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]==allfirst)textureness[(int)(x*subdivision/size)][(int)(y*subdivision/size)]=mixed;
592 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;
598 if(visibleloading)pgame->LoadingScreen();
600 patch_size=size/subdivision;
601 patch_elements=(patch_size)*(patch_size)*54;
605 for(i=0;i<subdivision;i++){
606 for(j=0;j<subdivision;j++){
607 UpdateVertexArray(i,j);
614 void Terrain::CalculateNormals()
617 static XYZ facenormal;
618 static XYZ p,q,a,b,c;
620 for(i=0; i<size; i++){
621 for(j=0; j<size; j++){
628 for(i=0;i<size-1;i++){
629 for(j=0;j<size-1;j++){
634 b.y=heightmap[i][j+1];
637 c.y=heightmap[i+1][j];
647 CrossProduct(&p,&q,&facenormal);
649 facenormals[i][j]=facenormal;
651 normals[i][j]=normals[i][j]+facenormal;
652 normals[i][j+1]=normals[i][j+1]+facenormal;
653 normals[i+1][j]=normals[i+1][j]+facenormal;
657 a.y=heightmap[i+1][j];
660 b.y=heightmap[i][j+1];
663 c.y=heightmap[i+1][j+1];
673 CrossProduct(&p,&q,&facenormal);
675 normals[i+1][j+1]=normals[i+1][j+1]+facenormal;
676 normals[i][j+1]=normals[i][j+1]+facenormal;
677 normals[i+1][j]=normals[i+1][j]+facenormal;
679 Normalise(&facenormals[i][j]);
683 for(i=0; i<size; i++){
684 for(j=0; j<size; j++){
685 Normalise(&normals[i][j]);
686 normals[i][j]=normals[i][j];
691 void Terrain::drawpatch(int whichx, int whichy, float opacity){
692 if(opacity>=1)glDisable(GL_BLEND);
695 UpdateTransparency(whichx,whichy);
698 //Set up vertex array
699 glEnableClientState(GL_VERTEX_ARRAY);
700 glEnableClientState(GL_COLOR_ARRAY);
701 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
702 glVertexPointer(3, GL_FLOAT, 9*sizeof(GLfloat),&vArray[0+whichx*patch_elements+whichy*patch_elements*subdivision]);
703 glColorPointer(4,GL_FLOAT, 9*sizeof(GLfloat),&vArray[3+whichx*patch_elements+whichy*patch_elements*subdivision]);
704 glTexCoordPointer(2, GL_FLOAT, 9*sizeof(GLfloat),&vArray[7+whichx*patch_elements+whichy*patch_elements*subdivision]);
707 glDrawArrays(GL_TRIANGLES, 0, numtris[whichx][whichy]*3);
709 glDisableClientState(GL_VERTEX_ARRAY);
710 glDisableClientState(GL_COLOR_ARRAY);
711 glDisableClientState(GL_TEXTURE_COORD_ARRAY);
714 void Terrain::drawpatchother(int whichx, int whichy, float opacity){
717 UpdateTransparency(whichx,whichy);
719 UpdateTransparencyother(whichx,whichy);
721 //Set up vertex array
722 glEnableClientState(GL_VERTEX_ARRAY);
723 glEnableClientState(GL_COLOR_ARRAY);
724 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
725 glVertexPointer(3, GL_FLOAT, 9*sizeof(GLfloat),&vArray[0+whichx*patch_elements+whichy*patch_elements*subdivision]);
726 glColorPointer(4,GL_FLOAT, 9*sizeof(GLfloat),&vArray[3+whichx*patch_elements+whichy*patch_elements*subdivision]);
727 glTexCoordPointer(2, GL_FLOAT, 9*sizeof(GLfloat),&vArray[7+whichx*patch_elements+whichy*patch_elements*subdivision]);
730 glDrawArrays(GL_TRIANGLES, 0, numtris[whichx][whichy]*3);
732 glDisableClientState(GL_VERTEX_ARRAY);
733 glDisableClientState(GL_COLOR_ARRAY);
734 glDisableClientState(GL_TEXTURE_COORD_ARRAY);
737 void Terrain::drawpatchotherother(int whichx, int whichy, float opacity){
739 UpdateTransparencyotherother(whichx,whichy);
741 glMatrixMode(GL_TEXTURE);
747 //Set up vertex array
748 glEnableClientState(GL_VERTEX_ARRAY);
749 glEnableClientState(GL_COLOR_ARRAY);
750 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
751 glVertexPointer(3, GL_FLOAT, 9*sizeof(GLfloat),&vArray[0+whichx*patch_elements+whichy*patch_elements*subdivision]);
752 glColorPointer(4,GL_FLOAT, 9*sizeof(GLfloat),&vArray[3+whichx*patch_elements+whichy*patch_elements*subdivision]);
753 glTexCoordPointer(2, GL_FLOAT, 9*sizeof(GLfloat),&vArray[7+whichx*patch_elements+whichy*patch_elements*subdivision]);
756 glDrawArrays(GL_TRIANGLES, 0, numtris[whichx][whichy]*3);
758 glDisableClientState(GL_VERTEX_ARRAY);
759 glDisableClientState(GL_COLOR_ARRAY);
760 glDisableClientState(GL_TEXTURE_COORD_ARRAY);
763 glMatrixMode(GL_MODELVIEW);
767 float Terrain::getHeight(float pointx, float pointz)
769 static float height1,height2;
770 static int tilex,tiley;
771 static XYZ startpoint,endpoint,intersect,triangle[3],average;
776 if(pointx>=size-1||pointz>=size-1||pointx<=0||pointz<=0)return 0;
790 triangle[0].y=heightmap[tilex][tiley];
792 triangle[1].x=tilex+1;
794 triangle[1].y=heightmap[tilex+1][tiley];
797 triangle[2].z=tiley+1;
798 triangle[2].y=heightmap[tilex][tiley+1];
800 if(!LineFacetd(&startpoint,&endpoint,&triangle[0],&triangle[1],&triangle[2],&intersect)){
801 triangle[0].x=tilex+1;
803 triangle[0].y=heightmap[tilex+1][tiley];
805 triangle[1].x=tilex+1;
806 triangle[1].z=tiley+1;
807 triangle[1].y=heightmap[tilex+1][tiley+1];
810 triangle[2].z=tiley+1;
811 triangle[2].y=heightmap[tilex][tiley+1];
812 LineFacetd(&startpoint,&endpoint,&triangle[0],&triangle[1],&triangle[2],&intersect);
814 return intersect.y*scale+getOpacity(pointx*scale,pointz*scale)/8;
816 //height1=heightmap[tilex][tiley]*(1-(pointx-tilex))+heightmap[tilex+1][tiley]*(pointx-tilex);
817 //height2=heightmap[tilex][tiley+1]*(1-(pointx-tilex))+heightmap[tilex+1][tiley+1]*(pointx-tilex);
819 //return height1*(1-(pointz-tiley))*scale+height2*(pointz-tiley)*scale;
822 float Terrain::getHeightExtrude(float pointx, float pointz,float point2x, float point2z)
824 static float height1,height2;
825 static int tilex,tiley;
826 static XYZ startpoint,endpoint,intersect,triangle[3],average;
833 if(pointx>=size-1||pointz>=size-1||pointx<=0||pointz<=0)return 0;
834 if(point2x>=size-1||point2z>=size-1||point2x<=0||point2z<=0)return 0;
836 startpoint.x=point2x;
838 startpoint.z=point2z;
848 triangle[0].y=heightmap[tilex][tiley];
850 triangle[1].x=tilex+1;
852 triangle[1].y=heightmap[tilex+1][tiley];
855 triangle[2].z=tiley+1;
856 triangle[2].y=heightmap[tilex][tiley+1];
860 mid=(triangle[0]+triangle[1]+triangle[2])/2;
862 triangle[0]=mid+(triangle[0]-mid)*10;
863 triangle[1]=mid+(triangle[0]-mid)*10;
864 triangle[2]=mid+(triangle[0]-mid)*10;
867 if(!LineFacetd(&startpoint,&endpoint,&triangle[0],&triangle[1],&triangle[2],&intersect)){
868 triangle[0].x=tilex+1;
870 triangle[0].y=heightmap[tilex+1][tiley];
872 triangle[1].x=tilex+1;
873 triangle[1].z=tiley+1;
874 triangle[1].y=heightmap[tilex+1][tiley+1];
877 triangle[2].z=tiley+1;
878 triangle[2].y=heightmap[tilex][tiley+1];
879 LineFacetd(&startpoint,&endpoint,&triangle[0],&triangle[1],&triangle[2],&intersect);
881 return intersect.y*scale+getOpacity(pointx*scale,pointz*scale)/8;
883 //height1=heightmap[tilex][tiley]*(1-(pointx-tilex))+heightmap[tilex+1][tiley]*(pointx-tilex);
884 //height2=heightmap[tilex][tiley+1]*(1-(pointx-tilex))+heightmap[tilex+1][tiley+1]*(pointx-tilex);
886 //return height1*(1-(pointz-tiley))*scale+height2*(pointz-tiley)*scale;
890 float Terrain::getOpacity(float pointx, float pointz)
892 static float height1,height2;
893 static int tilex,tiley;
898 if(pointx>=size-1||pointz>=size-1||pointx<=0||pointz<=0)return 0;
903 height1=opacityother[tilex][tiley]*(1-(pointx-tilex))+opacityother[tilex+1][tiley]*(pointx-tilex);
904 height2=opacityother[tilex][tiley+1]*(1-(pointx-tilex))+opacityother[tilex+1][tiley+1]*(pointx-tilex);
906 return height1*(1-(pointz-tiley))+height2*(pointz-tiley);
909 XYZ Terrain::getNormal(float pointx, float pointz)
911 static XYZ height1,height2,total;
912 static int tilex,tiley;
918 if(pointx>=size-1||pointz>=size-1||pointx<=0||pointz<=0)return height1;
922 height1=normals[tilex][tiley]*(1-(pointx-tilex))+normals[tilex+1][tiley]*(pointx-tilex);
923 height2=normals[tilex][tiley+1]*(1-(pointx-tilex))+normals[tilex+1][tiley+1]*(pointx-tilex);
924 total=height1*(1-(pointz-tiley))+height2*(pointz-tiley);
929 XYZ Terrain::getLighting(float pointx, float pointz)
931 static XYZ height1,height2;
932 static int tilex,tiley;
938 if(pointx>=size-1||pointz>=size-1||pointx<=0||pointz<=0)return height1;
942 height1.x=colors[tilex][tiley][0]*(1-(pointx-tilex))+colors[tilex+1][tiley][0]*(pointx-tilex);
943 height1.y=colors[tilex][tiley][1]*(1-(pointx-tilex))+colors[tilex+1][tiley][1]*(pointx-tilex);
944 height1.z=colors[tilex][tiley][2]*(1-(pointx-tilex))+colors[tilex+1][tiley][2]*(pointx-tilex);
945 height2.x=colors[tilex][tiley+1][0]*(1-(pointx-tilex))+colors[tilex+1][tiley+1][0]*(pointx-tilex);
946 height2.y=colors[tilex][tiley+1][1]*(1-(pointx-tilex))+colors[tilex+1][tiley+1][1]*(pointx-tilex);
947 height2.z=colors[tilex][tiley+1][2]*(1-(pointx-tilex))+colors[tilex+1][tiley+1][2]*(pointx-tilex);
949 return height1*(1-(pointz-tiley))+height2*(pointz-tiley);
952 void Terrain::draw(int layer)
955 static float opacity;
956 static XYZ terrainpoint;
957 static float distance[subdivision][subdivision];
959 static int beginx,endx;
960 static int beginz,endz;
962 static float patch_size=size/subdivision*scale;
963 static float viewdistsquared;
965 viewdistsquared=viewdistance*viewdistance;
968 beginx=(viewer.x-viewdistance)/(patch_size)-1;
969 if(beginx<0)beginx=0;
970 beginz=(viewer.z-viewdistance)/(patch_size)-1;
971 if(beginz<0)beginz=0;
973 endx=(viewer.x+viewdistance)/(patch_size)+1;
974 if(endx>subdivision)endx=subdivision;
975 endz=(viewer.z+viewdistance)/(patch_size)+1;
976 if(endz>subdivision)endz=subdivision;
979 for(i=beginx;i<endx;i++){
980 for(j=beginz;j<endz;j++){
981 terrainpoint.x=i*patch_size+(patch_size)/2;
982 terrainpoint.y=viewer.y;//heightmap[i][j]*scale;
983 terrainpoint.z=j*patch_size+(patch_size)/2;
984 distance[i][j]=findDistancefast(&viewer,&terrainpoint);
988 for(i=beginx;i<endx;i++){
989 for(j=beginz;j<endz;j++){
990 if(distance[i][j]<(viewdistance+patch_size)*(viewdistance+patch_size)){
992 if(distance[i][j]>viewdistsquared*fadestart-viewdistsquared)opacity=0;
993 if(opacity==1&&i!=subdivision)if(distance[i+1][j]>viewdistsquared*fadestart-viewdistsquared)opacity=0;
994 if(opacity==1&&j!=subdivision)if(distance[i][j+1]>viewdistsquared*fadestart-viewdistsquared)opacity=0;
995 if(opacity==1&&j!=subdivision&&i!=subdivision)if(distance[i+1][j+1]>viewdistsquared*fadestart-viewdistsquared)opacity=0;
996 glMatrixMode(GL_MODELVIEW); // Select The Modelview Matrix
998 if(frustum.CubeInFrustum(i*patch_size+patch_size*.5,avgypatch[i][j],j*patch_size+patch_size*.5,heightypatch[i][j]/2))
1000 if(environment==desertenvironment&&distance[i][j]>viewdistsquared/4)glTexEnvf( GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, blurness);
1001 else if(environment==desertenvironment)glTexEnvf( GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, 0 );
1002 if(!layer&&textureness[i][j]!=allsecond)drawpatch(i,j,opacity);
1003 if(layer==1&&textureness[i][j]!=allfirst)drawpatchother(i,j,opacity);
1004 if(layer==2&&textureness[i][j]!=allfirst)drawpatchotherother(i,j,opacity);
1010 if(environment==desertenvironment)glTexEnvf( GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, 0 );
1013 void Terrain::drawdecals()
1017 static float distancemult;
1018 static int lasttype;
1020 static float patch_size=size/subdivision*scale;
1021 static float viewdistsquared;
1024 viewdistsquared=viewdistance*viewdistance;
1029 glDisable(GL_LIGHTING);
1030 glDisable(GL_CULL_FACE);
1031 glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
1033 for(i=0;i<numdecals;i++){
1034 if(decaltype[i]==blooddecalfast&&decalalivetime[i]<2)decalalivetime[i]=2;
1035 if((decaltype[i]==shadowdecal||decaltype[i]==shadowdecalpermanent)&&decaltype[i]!=lasttype){
1036 glBindTexture( GL_TEXTURE_2D, shadowtexture);
1039 glAlphaFunc(GL_GREATER, 0.0001);
1040 glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
1043 if(decaltype[i]==footprintdecal&&decaltype[i]!=lasttype){
1044 glBindTexture( GL_TEXTURE_2D, footprinttexture);
1047 glAlphaFunc(GL_GREATER, 0.0001);
1048 glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
1051 if(decaltype[i]==bodyprintdecal&&decaltype[i]!=lasttype){
1052 glBindTexture( GL_TEXTURE_2D, bodyprinttexture);
1055 glAlphaFunc(GL_GREATER, 0.0001);
1056 glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
1059 if((decaltype[i]==blooddecal||decaltype[i]==blooddecalslow)&&decaltype[i]!=lasttype){
1060 glBindTexture( GL_TEXTURE_2D, bloodtexture);
1063 glAlphaFunc(GL_GREATER, 0.15);
1064 glBlendFunc(GL_ONE,GL_ZERO);
1067 if((decaltype[i]==blooddecalfast)&&decaltype[i]!=lasttype){
1068 glBindTexture( GL_TEXTURE_2D, bloodtexture2);
1071 glAlphaFunc(GL_GREATER, 0.15);
1072 glBlendFunc(GL_ONE,GL_ZERO);
1075 if(decaltype[i]==shadowdecal||decaltype[i]==shadowdecalpermanent){
1076 distancemult=(viewdistsquared-(findDistancefast(&viewer,&decalposition[i])-(viewdistsquared*fadestart))*(1/(1-fadestart)))/viewdistsquared;
1077 if(distancemult>=1)glColor4f(1,1,1,decalopacity[i]);
1078 if(distancemult<1)glColor4f(1,1,1,decalopacity[i]*distancemult);
1080 if(decaltype[i]==footprintdecal||decaltype[i]==bodyprintdecal){
1081 distancemult=(viewdistsquared-(findDistancefast(&viewer,&decalposition[i])-(viewdistsquared*fadestart))*(1/(1-fadestart)))/viewdistsquared;
1082 if(distancemult>=1){
1083 glColor4f(1,1,1,decalopacity[i]);
1084 if(decalalivetime[i]>3)glColor4f(1,1,1,decalopacity[i]*(5-decalalivetime[i])/2);
1087 glColor4f(1,1,1,decalopacity[i]*distancemult);
1088 if(decalalivetime[i]>3)glColor4f(1,1,1,decalopacity[i]*(5-decalalivetime[i])/2*distancemult);
1091 if((decaltype[i]==blooddecal||decaltype[i]==blooddecalfast||decaltype[i]==blooddecalslow)){
1092 distancemult=(viewdistsquared-(findDistancefast(&viewer,&decalposition[i])-(viewdistsquared*fadestart))*(1/(1-fadestart)))/viewdistsquared;
1093 if(distancemult>=1){
1094 glColor4f(decalbrightness[i],decalbrightness[i],decalbrightness[i],decalopacity[i]);
1095 if(decalalivetime[i]<4)glColor4f(decalbrightness[i],decalbrightness[i],decalbrightness[i],decalopacity[i]*decalalivetime[i]*.25);
1096 if(decalalivetime[i]>58)glColor4f(decalbrightness[i],decalbrightness[i],decalbrightness[i],decalopacity[i]*(60-decalalivetime[i])/2);
1099 glColor4f(decalbrightness[i],decalbrightness[i],decalbrightness[i],decalopacity[i]*distancemult);
1100 if(decalalivetime[i]<4)glColor4f(decalbrightness[i],decalbrightness[i],decalbrightness[i],decalopacity[i]*decalalivetime[i]*distancemult*.25);
1101 if(decalalivetime[i]>58)glColor4f(decalbrightness[i],decalbrightness[i],decalbrightness[i],decalopacity[i]*(60-decalalivetime[i])/2*distancemult);
1104 lasttype=decaltype[i];
1105 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
1106 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
1108 glMatrixMode(GL_MODELVIEW); // Select The Modelview Matrix
1110 glBegin(GL_TRIANGLES);
1111 for(int j=0;j<3;j++)
1113 glTexCoord2f(decaltexcoords[i][j][0], decaltexcoords[i][j][1]); glVertex3f(decalvertex[i][j].x,decalvertex[i][j].y,decalvertex[i][j].z);
1118 for(i=numdecals-1;i>=0;i--){
1119 decalalivetime[i]+=multiplier;
1120 if(decaltype[i]==blooddecalslow)decalalivetime[i]-=multiplier*2/3;
1121 if(decaltype[i]==blooddecalfast)decalalivetime[i]+=multiplier*4;
1122 if(decaltype[i]==shadowdecal)DeleteDecal(i);
1123 if(decaltype[i]==footprintdecal&&decalalivetime[i]>=5)DeleteDecal(i);
1124 if(decaltype[i]==bodyprintdecal&&decalalivetime[i]>=5)DeleteDecal(i);
1125 if((decaltype[i]==blooddecal||decaltype[i]==blooddecalfast||decaltype[i]==blooddecalslow)&&decalalivetime[i]>=60)DeleteDecal(i);
1127 glAlphaFunc(GL_GREATER, 0.0001);
1131 void Terrain::AddObject(XYZ where, float radius, int id)
1137 for(i=0;i<subdivision;i++){
1138 for(j=0;j<subdivision;j++){
1139 if(patchobjectnum[i][j]<300-1){
1141 points[0].x=(size/subdivision)*i;
1142 points[0].z=(size/subdivision)*j;
1143 points[0].y=heightmap[(int)points[0].x][(int)points[0].z];
1144 points[1].x=(size/subdivision)*(i+1);
1145 points[1].z=(size/subdivision)*j;
1146 points[1].y=heightmap[(int)points[1].x][(int)points[1].z];
1147 points[2].x=(size/subdivision)*(i+1);
1148 points[2].z=(size/subdivision)*(j+1);
1149 points[2].y=heightmap[(int)points[2].x][(int)points[2].z];
1150 points[3].x=(size/subdivision)*i;
1151 points[3].z=(size/subdivision)*(j+1);
1152 points[3].y=heightmap[(int)points[3].x][(int)points[3].z];
1153 points[0]*=scale*terraindetail;
1154 points[1]*=scale*terraindetail;
1155 points[2]*=scale*terraindetail;
1156 points[3]*=scale*terraindetail;
1157 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){
1158 patchobjects[i][j][patchobjectnum[i][j]]=id;
1159 patchobjectnum[i][j]++;
1167 void Terrain::DeleteDecal(int which)
1170 decaltype[which]=decaltype[numdecals-1];
1171 decalposition[which]=decalposition[numdecals-1];
1172 for(int i=0;i<3;i++){
1173 decalvertex[which][i]=decalvertex[numdecals-1][i];
1174 decaltexcoords[which][i][0]=decaltexcoords[numdecals-1][i][0];
1175 decaltexcoords[which][i][1]=decaltexcoords[numdecals-1][i][1];
1177 decalrotation[which]=decalrotation[numdecals-1];
1178 decalalivetime[which]=decalalivetime[numdecals-1];
1179 decalopacity[which]=decalopacity[numdecals-1];
1180 decalbrightness[which]=decalbrightness[numdecals-1];
1185 void Terrain::MakeDecal(int type, XYZ where, float size, float opacity, float rotation){
1187 if(opacity>0&&size>0){
1188 static int patchx[4];
1189 static int patchy[4];
1191 decaltexcoords[numdecals][0][0]=1;
1192 decaltexcoords[numdecals][0][1]=0;
1194 patchx[0]=(where.x+size)/scale;
1195 patchx[1]=(where.x-size)/scale;
1196 patchx[2]=(where.x-size)/scale;
1197 patchx[3]=(where.x+size)/scale;
1199 patchy[0]=(where.z-size)/scale;
1200 patchy[1]=(where.z-size)/scale;
1201 patchy[2]=(where.z+size)/scale;
1202 patchy[3]=(where.z+size)/scale;
1204 /*if(patchx[1]<subdivision-1&&patchy[1]<subdivision-1&&patchx[1]>0&&patchy[1]>0)
1205 if(patchx[2]<subdivision-1&&patchy[2]<subdivision-1&&patchx[2]>0&&patchy[2]>0)
1206 if(patchx[3]<subdivision-1&&patchy[3]<subdivision-1&&patchx[3]>0&&patchy[3]>0)
1207 if(patchx[0]<subdivision-1&&patchy[0]<subdivision-1&&patchx[0]>0&&patchy[0]>0){
1209 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])){
1210 MakeDecalLock(type,where,patchx[0],patchy[0],size,opacity,rotation);
1213 if((patchx[1]!=patchx[2]||patchy[1]!=patchy[2])&&(patchx[1]!=patchx[3]||patchy[1]!=patchy[3])){
1214 MakeDecalLock(type,where,patchx[1],patchy[1],size,opacity,rotation);
1217 if((patchx[2]!=patchx[3]||patchy[2]!=patchy[3])){
1218 MakeDecalLock(type,where,patchx[2],patchy[2],size,opacity,rotation);
1220 MakeDecalLock(type,where,patchx[3],patchy[3],size,opacity,rotation);
1226 void Terrain::MakeDecalLock(int type, XYZ where,int whichx, int whichy, float size, float opacity, float rotation){
1228 static float placex,placez;
1233 rot=getLighting(where.x,where.z);
1234 decalbrightness[numdecals]=(rot.x+rot.y+rot.z)/3;
1235 if(decalbrightness[numdecals]<.4)decalbrightness[numdecals]=.4;
1237 //if(type==blooddecal||type==blooddecalfast||type==blooddecalslow){
1238 if(environment==grassyenvironment){
1239 decalbrightness[numdecals]*=.6;
1243 if(decalbrightness[numdecals]>1)decalbrightness[numdecals]=1;
1244 decalbright=decalbrightness[numdecals];
1246 decalposition[numdecals]=where;
1247 decaltype[numdecals]=type;
1248 decalopacity[numdecals]=opacity;
1249 decalrotation[numdecals]=rotation;
1250 decalalivetime[numdecals]=0;
1252 placex=(float)whichx*scale+scale;
1253 placez=(float)whichy*scale;
1255 decaltexcoords[numdecals][0][0]=(placex-where.x)/size/2+.5;
1256 decaltexcoords[numdecals][0][1]=(placez-where.z)/size/2+.5;
1258 decalvertex[numdecals][0].x=placex;
1259 decalvertex[numdecals][0].z=placez;
1260 decalvertex[numdecals][0].y=heightmap[whichx+1][whichy]*scale+.01;
1263 placex=(float)whichx*scale+scale;
1264 placez=(float)whichy*scale+scale;
1266 decaltexcoords[numdecals][1][0]=(placex-where.x)/size/2+.5;
1267 decaltexcoords[numdecals][1][1]=(placez-where.z)/size/2+.5;
1269 decalvertex[numdecals][1].x=placex;
1270 decalvertex[numdecals][1].z=placez;
1271 decalvertex[numdecals][1].y=heightmap[whichx+1][whichy+1]*scale+.01;
1274 placex=(float)whichx*scale;
1275 placez=(float)whichy*scale+scale;
1277 decaltexcoords[numdecals][2][0]=(placex-where.x)/size/2+.5;
1278 decaltexcoords[numdecals][2][1]=(placez-where.z)/size/2+.5;
1280 decalvertex[numdecals][2].x=placex;
1281 decalvertex[numdecals][2].z=placez;
1282 decalvertex[numdecals][2].y=heightmap[whichx][whichy+1]*scale+.01;
1284 if(decalrotation[numdecals]){
1285 for(int i=0;i<3;i++){
1287 rot.x=decaltexcoords[numdecals][i][0]-.5;
1288 rot.z=decaltexcoords[numdecals][i][1]-.5;
1289 rot=DoRotation(rot,0,-decalrotation[numdecals],0);
1290 decaltexcoords[numdecals][i][0]=rot.x+.5;
1291 decaltexcoords[numdecals][i][1]=rot.z+.5;
1295 if(!(decaltexcoords[numdecals][0][0]<0&&decaltexcoords[numdecals][1][0]<0&&decaltexcoords[numdecals][2][0]<0))
1296 if(!(decaltexcoords[numdecals][0][1]<0&&decaltexcoords[numdecals][1][1]<0&&decaltexcoords[numdecals][2][1]<0))
1297 if(!(decaltexcoords[numdecals][0][0]>1&&decaltexcoords[numdecals][1][0]>1&&decaltexcoords[numdecals][2][0]>1))
1298 if(!(decaltexcoords[numdecals][0][1]>1&&decaltexcoords[numdecals][1][1]>1&&decaltexcoords[numdecals][2][1]>1))
1299 if(numdecals<max_decals-1)numdecals++;
1301 decalbrightness[numdecals]=decalbright;
1303 decalposition[numdecals]=where;
1304 decaltype[numdecals]=type;
1305 decalopacity[numdecals]=opacity;
1306 decalrotation[numdecals]=rotation;
1307 decalalivetime[numdecals]=0;
1309 placex=(float)whichx*scale+scale;
1310 placez=(float)whichy*scale;
1312 decaltexcoords[numdecals][0][0]=(placex-where.x)/size/2+.5;
1313 decaltexcoords[numdecals][0][1]=(placez-where.z)/size/2+.5;
1315 decalvertex[numdecals][0].x=placex;
1316 decalvertex[numdecals][0].z=placez;
1317 decalvertex[numdecals][0].y=heightmap[whichx+1][whichy]*scale+.01;
1320 placex=(float)whichx*scale;
1321 placez=(float)whichy*scale;
1323 decaltexcoords[numdecals][1][0]=(placex-where.x)/size/2+.5;
1324 decaltexcoords[numdecals][1][1]=(placez-where.z)/size/2+.5;
1326 decalvertex[numdecals][1].x=placex;
1327 decalvertex[numdecals][1].z=placez;
1328 decalvertex[numdecals][1].y=heightmap[whichx][whichy]*scale+.01;
1331 placex=(float)whichx*scale;
1332 placez=(float)whichy*scale+scale;
1334 decaltexcoords[numdecals][2][0]=(placex-where.x)/size/2+.5;
1335 decaltexcoords[numdecals][2][1]=(placez-where.z)/size/2+.5;
1337 decalvertex[numdecals][2].x=placex;
1338 decalvertex[numdecals][2].z=placez;
1339 decalvertex[numdecals][2].y=heightmap[whichx][whichy+1]*scale+.01;
1341 if(decalrotation[numdecals]){
1342 for(int i=0;i<3;i++){
1344 rot.x=decaltexcoords[numdecals][i][0]-.5;
1345 rot.z=decaltexcoords[numdecals][i][1]-.5;
1346 rot=DoRotation(rot,0,-decalrotation[numdecals],0);
1347 decaltexcoords[numdecals][i][0]=rot.x+.5;
1348 decaltexcoords[numdecals][i][1]=rot.z+.5;
1352 if(!(decaltexcoords[numdecals][0][0]<0&&decaltexcoords[numdecals][1][0]<0&&decaltexcoords[numdecals][2][0]<0))
1353 if(!(decaltexcoords[numdecals][0][1]<0&&decaltexcoords[numdecals][1][1]<0&&decaltexcoords[numdecals][2][1]<0))
1354 if(!(decaltexcoords[numdecals][0][0]>1&&decaltexcoords[numdecals][1][0]>1&&decaltexcoords[numdecals][2][0]>1))
1355 if(!(decaltexcoords[numdecals][0][1]>1&&decaltexcoords[numdecals][1][1]>1&&decaltexcoords[numdecals][2][1]>1))
1356 if(numdecals<max_decals-1)numdecals++;
1360 void Terrain::DoLighting()
1362 static int i,j,k,todivide;
1363 static float brightness, total;
1364 static XYZ blank, terrainpoint,lightloc;
1365 lightloc=light.location;
1366 Normalise(&lightloc);
1368 for(i=0;i<size;i++){
1369 for(j=0;j<size;j++){
1370 terrainpoint.x=(float)i*scale;
1371 terrainpoint.z=(float)j*scale;
1372 terrainpoint.y=heightmap[i][j]*scale+.1;
1374 if(lineTerrain(lightlocation*10+terrainpoint,terrainpoint,&blank)==-1)
1376 brightness=dotproduct(&lightloc,&normals[i][j]);
1378 if(brightness>1)brightness=1;
1379 if(brightness<0)brightness=0;
1381 colors[i][j][0]=light.color[0]*brightness+light.ambient[0];
1382 colors[i][j][1]=light.color[1]*brightness+light.ambient[1];
1383 colors[i][j][2]=light.color[2]*brightness+light.ambient[2];
1385 if(colors[i][j][0]>1)colors[i][j][0]=1;
1386 if(colors[i][j][1]>1)colors[i][j][1]=1;
1387 if(colors[i][j][2]>1)colors[i][j][2]=1;
1388 if(colors[i][j][0]<0)colors[i][j][0]=0;
1389 if(colors[i][j][1]<0)colors[i][j][1]=0;
1390 if(colors[i][j][2]<0)colors[i][j][2]=0;
1395 for(i=0;i<size;i++){
1396 for(j=0;j<size;j++){
1400 if(i!=0){ total+=colors[j][i-1][k]; todivide++;}
1401 if(i!=size-1){ total+=colors[j][i+1][k]; todivide++;}
1402 if(j!=0){ total+=colors[j-1][i][k]; todivide++;}
1403 if(j!=size-1){ total+=colors[j+1][i][k]; todivide++;}
1404 if(i!=0&&j!=0){ total+=colors[j-1][i-1][k]; todivide++;}
1405 if(i!=size-1&&j!=0){ total+=colors[j-1][i+1][k]; todivide++;}
1406 if(j!=size-1&&i!=size-1){ total+=colors[j+1][i+1][k]; todivide++;}
1407 if(j!=size-1&&i!=0){ total+=colors[j+1][i-1][k]; todivide++;}
1408 total+=colors[j][i][k]; todivide++;
1410 colors[j][i][k]=total/todivide;
1416 void Terrain::DoShadows()
1418 static int i,j,k,l,todivide;
1419 static float brightness, total;
1420 static XYZ testpoint,testpoint2, terrainpoint,lightloc,col;
1421 lightloc=light.location;
1426 if(skyboxtexture&&tutoriallevel){
1432 Normalise(&lightloc);
1434 for(i=0;i<size;i++){
1435 for(j=0;j<size;j++){
1436 terrainpoint.x=(float)(i)*scale;
1437 terrainpoint.z=(float)(j)*scale;
1438 terrainpoint.y=heightmap[i][j]*scale;
1441 patchx=(float)(i)*subdivision/size;
1442 patchz=(float)(j)*subdivision/size;
1443 if(patchobjectnum[patchx][patchz]){
1444 for(k=0;k<patchobjectnum[patchx][patchz];k++){
1445 l=patchobjects[patchx][patchz][k];
1446 if(objects.type[l]!=treetrunktype){
1447 testpoint=terrainpoint;
1448 testpoint2=terrainpoint+lightloc*50*(1-shadowed);
1449 if(objects.model[l].LineCheck(&testpoint,&testpoint2,&col,&objects.position[l],&objects.rotation[l])!=-1){
1450 shadowed=1-(findDistance(&terrainpoint,&col)/50);
1454 if(visibleloading)pgame->LoadingScreen();
1456 brightness=dotproduct(&lightloc,&normals[i][j]);
1457 if(shadowed)brightness*=1-shadowed;
1459 if(brightness>1)brightness=1;
1460 if(brightness<0)brightness=0;
1462 colors[i][j][0]=light.color[0]*brightness+light.ambient[0];
1463 colors[i][j][1]=light.color[1]*brightness+light.ambient[1];
1464 colors[i][j][2]=light.color[2]*brightness+light.ambient[2];
1466 if(colors[i][j][0]>1)colors[i][j][0]=1;
1467 if(colors[i][j][1]>1)colors[i][j][1]=1;
1468 if(colors[i][j][2]>1)colors[i][j][2]=1;
1469 if(colors[i][j][0]<0)colors[i][j][0]=0;
1470 if(colors[i][j][1]<0)colors[i][j][1]=0;
1471 if(colors[i][j][2]<0)colors[i][j][2]=0;
1475 if(visibleloading)pgame->LoadingScreen();
1478 for(i=0;i<size;i++){
1479 for(j=0;j<size;j++){
1483 if(i!=0){ total+=colors[j][i-1][k]; todivide++;}
1484 if(i!=size-1){ total+=colors[j][i+1][k]; todivide++;}
1485 if(j!=0){ total+=colors[j-1][i][k]; todivide++;}
1486 if(j!=size-1){ total+=colors[j+1][i][k]; todivide++;}
1487 if(i!=0&&j!=0){ total+=colors[j-1][i-1][k]; todivide++;}
1488 if(i!=size-1&&j!=0){ total+=colors[j-1][i+1][k]; todivide++;}
1489 if(j!=size-1&&i!=size-1){ total+=colors[j+1][i+1][k]; todivide++;}
1490 if(j!=size-1&&i!=0){ total+=colors[j+1][i-1][k]; todivide++;}
1491 total+=colors[j][i][k]; todivide++;
1493 colors[j][i][k]=total/todivide;
1498 for(i=0;i<subdivision;i++){
1499 for(j=0;j<subdivision;j++){
1500 UpdateVertexArray(i,j);
1510 footprinttexture = 0;
1511 bodyprinttexture = 0;
1516 memset(patchobjectnum, 0, sizeof(patchobjectnum));
1517 memset(patchobjects, 0, sizeof(patchobjects));
1521 memset(heightmap, 0, sizeof(heightmap));
1522 memset(normals, 0, sizeof(normals));
1523 memset(facenormals, 0, sizeof(facenormals));
1524 memset(triangles, 0, sizeof(triangles));
1525 memset(colors, 0, sizeof(colors));
1526 memset(opacityother, 0, sizeof(opacityother));
1527 memset(texoffsetx, 0, sizeof(texoffsetx));
1528 memset(texoffsety, 0, sizeof(texoffsety));
1529 memset(numtris, 0, sizeof(numtris));
1530 memset(textureness, 0, sizeof(textureness));
1532 memset(vArray, 0, sizeof(vArray));
1534 memset(visible, 0, sizeof(visible));
1535 memset(avgypatch, 0, sizeof(avgypatch));
1536 memset(maxypatch, 0, sizeof(maxypatch));
1537 memset(minypatch, 0, sizeof(minypatch));
1538 memset(heightypatch, 0, sizeof(heightypatch));
1542 memset(decaltexcoords, 0, sizeof(decaltexcoords));
1543 memset(decalvertex, 0, sizeof(decalvertex));
1544 memset(decaltype, 0, sizeof(decaltype));
1545 memset(decalopacity, 0, sizeof(decalopacity));
1546 memset(decalrotation, 0, sizeof(decalrotation));
1547 memset(decalalivetime, 0, sizeof(decalalivetime));
1548 memset(decalbrightness, 0, sizeof(decalbrightness));
1549 memset(decalposition, 0, sizeof(decalposition));
1554 if(terraintexture)glDeleteTextures( 1, &terraintexture );
1555 if(shadowtexture) glDeleteTextures( 1, &shadowtexture );
1556 if(bodyprinttexture) glDeleteTextures( 1, &bodyprinttexture );
1557 if(footprinttexture) glDeleteTextures( 1, &footprinttexture );
1558 if(bloodtexture) glDeleteTextures( 1, &bloodtexture );
1559 if(bloodtexture2) glDeleteTextures( 1, &bloodtexture2 );
1560 if(breaktexture) glDeleteTextures( 1, &breaktexture );