Source/Sprites.cpp

   1 #include "Sprites.h"
   2 #include "Person.h"
   3 extern XYZ viewer;
   4 extern float viewdistance;
   5 extern float fadestart;
   6 extern int environment;
   7 extern float texscale;
   8 extern Light light;
   9 extern float multiplier;
  10 extern float gravity;
  11 extern Terrain terrain;
  12 extern Objects objects;
  13 extern int detail;
  14 extern XYZ viewerfacing;
  15 extern float terraindetail;
  16 extern int bloodtoggle;
  17 extern XYZ windvector;
  18 extern int numplayers;
  19 extern Person player[maxplayers];
  20 //Functions
  21
  22 void Sprites::Draw()
  23 {
  24         static int i,j,k;
  25         static float M[16];
  26         static XYZ point;
  27         static float distancemult;
  28         static int lasttype;
  29         static int lastspecial;
  30         static int whichpatchx,whichpatchz;
  31         static XYZ start,end,colpoint;
  32         static bool check;
  33         static bool blend;
  34         static float tempmult;
  35         static XYZ difference;
  36         static float lightcolor[3];
  37         static float viewdistsquared=viewdistance*viewdistance;
  38         static XYZ tempviewer;
  39
  40         tempviewer=viewer+viewerfacing*6;
  41         check=0;
  42
  43         lightcolor[0]=light.color[0]*.5+light.ambient[0];
  44         lightcolor[1]=light.color[1]*.5+light.ambient[1];
  45         lightcolor[2]=light.color[2]*.5+light.ambient[2];
  46
  47         checkdelay-=multiplier*10;
  48
  49         if(checkdelay<=0){
  50                 check=1;
  51                 checkdelay=1;
  52         }
  53
  54         lasttype=-1;
  55         lastspecial=-1;
  56         glEnable(GL_BLEND);
  57         glDisable(GL_LIGHTING);
  58         glDisable(GL_CULL_FACE);
  59         glEnable(GL_TEXTURE_2D);
  60         blend = 1;
  61         glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
  62         glDepthMask(0);
  63         glAlphaFunc(GL_GREATER, 0.0001);
  64         for(i=0;i<numsprites;i++){
  65                 if(type[i]==cloudsprite&&lasttype!=type[i]){
  66                         glBindTexture( GL_TEXTURE_2D, cloudtexture);
  67                         if(!blend){
  68                                 blend=1;
  69                                 glAlphaFunc(GL_GREATER, 0.0001);
  70                                 glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
  71                         }
  72                 }
  73                 if(type[i]==cloudimpactsprite&&lasttype!=type[i]){
  74                         glBindTexture( GL_TEXTURE_2D, cloudimpacttexture);
  75                         if(!blend){
  76                                 blend=1;
  77                                 glAlphaFunc(GL_GREATER, 0.0001);
  78                                 glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
  79                         }
  80                 }
  81                 if(type[i]==breathsprite&&lasttype!=type[i]){
  82                         glBindTexture( GL_TEXTURE_2D, cloudimpacttexture);
  83                         if(!blend){
  84                                 blend=1;
  85                                 glAlphaFunc(GL_GREATER, 0.0001);
  86                                 glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
  87                         }
  88                 }
  89                 if(type[i]==smoketype&&lasttype!=type[i]){
  90                         glBindTexture( GL_TEXTURE_2D, smoketexture);
  91                         if(!blend){
  92                                 blend=1;
  93                                 glAlphaFunc(GL_GREATER, 0.0001);
  94                                 glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
  95                         }
  96                 }
  97                 if(type[i]==bloodsprite&&lasttype!=type[i]){
  98                         glBindTexture( GL_TEXTURE_2D, bloodtexture);
  99                         if(!blend){
 100                                 blend=1;
 101                                 glAlphaFunc(GL_GREATER, 0.0001);
 102                                 glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
 103                         }
 104                 }
 105                 if(type[i]==splintersprite&&(lasttype!=type[i]||lastspecial!=special[i])){
 106                         if(special[i]==0)glBindTexture( GL_TEXTURE_2D, splintertexture);
 107                         if(special[i]==1)glBindTexture( GL_TEXTURE_2D, leaftexture);
 108                         if(special[i]==2)glBindTexture( GL_TEXTURE_2D, snowflaketexture);
 109                         if(special[i]==3)glBindTexture( GL_TEXTURE_2D, toothtexture);
 110                         if(!blend){
 111                                 blend=1;
 112                                 glAlphaFunc(GL_GREATER, 0.0001);
 113                                 glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
 114                         }
 115                 }
 116                 if(type[i]==snowsprite&&lasttype!=type[i]){
 117                         glBindTexture( GL_TEXTURE_2D, snowflaketexture);
 118                         if(!blend){
 119                                 blend=1;
 120                                 glAlphaFunc(GL_GREATER, 0.0001);
 121                                 glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
 122                         }
 123                 }
 124                 if(type[i]==weaponshinesprite&&lasttype!=type[i]){
 125                         glBindTexture( GL_TEXTURE_2D, shinetexture);
 126                         if(blend){
 127                                 blend=0;
 128                                 glAlphaFunc(GL_GREATER, 0.001);
 129                                 glBlendFunc(GL_SRC_ALPHA,GL_ONE);
 130                         }
 131                 }
 132                 if((type[i]==flamesprite||type[i]==weaponflamesprite)&&lasttype!=type[i]){
 133                         glBindTexture( GL_TEXTURE_2D, flametexture);
 134                         if(blend||lasttype==bloodflamesprite){
 135                                 blend=0;
 136                                 glAlphaFunc(GL_GREATER, 0.3);
 137                                 glBlendFunc(GL_SRC_ALPHA,GL_ONE);
 138                         }
 139                 }
 140                 if((type[i]==bloodflamesprite)&&lasttype!=type[i]){
 141                         glBindTexture( GL_TEXTURE_2D, bloodflametexture);
 142                         if(blend){
 143                                 blend=0;
 144                                 glAlphaFunc(GL_GREATER, 0.3);
 145                                 glBlendFunc(GL_ONE,GL_ZERO);
 146                                 //glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
 147                         }
 148                 }
 149                 if(type[i]!=snowsprite)distancemult=(viewdistsquared-(findDistancefast(&viewer,&position[i])-(viewdistsquared*fadestart))*(1/(1-fadestart)))/viewdistsquared;
 150                 if(type[i]==snowsprite)distancemult=(144-(findDistancefast(&tempviewer,&position[i])-(144*fadestart))*(1/(1-fadestart)))/144;
 151                 if(type[i]!=flamesprite){
 152                         if(distancemult>=1)glColor4f(color[i][0]*lightcolor[0],color[i][1]*lightcolor[1],color[i][2]*lightcolor[2],opacity[i]);
 153                         if(distancemult<1)glColor4f(color[i][0]*lightcolor[0],color[i][1]*lightcolor[1],color[i][2]*lightcolor[2],opacity[i]*distancemult);
 154                 }
 155                 if(type[i]==flamesprite){
 156                         if(distancemult>=1)glColor4f(color[i][0],color[i][1],color[i][2],opacity[i]);
 157                         if(distancemult<1)glColor4f(color[i][0],color[i][1],color[i][2],opacity[i]*distancemult);
 158                 }
 159                 lasttype=type[i];
 160                 lastspecial=special[i];
 161                 glMatrixMode(GL_MODELVIEW);                                                     // Select The Modelview Matrix
 162                 glPushMatrix();
 163                         glTranslatef(position[i].x,position[i].y,position[i].z);
 164                         if((type[i]==flamesprite||type[i]==weaponflamesprite||type[i]==weaponshinesprite)){
 165                                 difference=viewer-position[i];
 166                                 Normalise(&difference);
 167                                 glTranslatef(difference.x*size[i]/4, difference.y*size[i]/4, difference.z*size[i]/4);
 168                         }
 169                         if(type[i]==snowsprite){
 170                                 glRotatef(rotation[i]*.2,0,.3,1);
 171                                 glTranslatef(1,0,0);
 172                         }
 173                         glGetFloatv(GL_MODELVIEW_MATRIX,M);
 174                         point.x=M[12];
 175                         point.y=M[13];
 176                         point.z=M[14];
 177                         glLoadIdentity();
 178                         glTranslatef(point.x, point.y, point.z);
 179
 180                         glRotatef(rotation[i],0,0,1);
 181
 182                         if((type[i]==flamesprite||type[i]==weaponflamesprite||type[i]==weaponshinesprite||type[i]==bloodflamesprite)){
 183                                 if(alivetime[i]<.14)glScalef(alivetime[i]/.14,alivetime[i]/.14,alivetime[i]/.14);
 184                         }
 185                         if(type[i]==smoketype||type[i]==snowsprite||type[i]==weaponshinesprite||type[i]==breathsprite){
 186                                 if(alivetime[i]<.3){
 187                                         if(distancemult>=1)glColor4f(color[i][0]*lightcolor[0],color[i][1]*lightcolor[1],color[i][2]*lightcolor[2],opacity[i]*alivetime[i]/.3);
 188                                         if(distancemult<1)glColor4f(color[i][0]*lightcolor[0],color[i][1]*lightcolor[1],color[i][2]*lightcolor[2],opacity[i]*distancemult*alivetime[i]/.3);
 189                                 }
 190                         }
 191                         if(type[i]==splintersprite&&special[i]>0&&special[i]!=3){
 192                                 if(alivetime[i]<.2){
 193                                         if(distancemult>=1)glColor4f(color[i][0]*lightcolor[0],color[i][1]*lightcolor[1],color[i][2]*lightcolor[2],alivetime[i]/.2);
 194                                         if(distancemult<1)glColor4f(color[i][0]*lightcolor[0],color[i][1]*lightcolor[1],color[i][2]*lightcolor[2],distancemult*alivetime[i]/.2);
 195                                 }
 196                                 else{
 197                                         if(distancemult>=1)glColor4f(color[i][0]*lightcolor[0],color[i][1]*lightcolor[1],color[i][2]*lightcolor[2],1);
 198                                         if(distancemult<1)glColor4f(color[i][0]*lightcolor[0],color[i][1]*lightcolor[1],color[i][2]*lightcolor[2],1);
 199                                 }
 200                         }
 201                         if(type[i]==splintersprite&&(special[i]==0||special[i]==3)){
 202                                 if(distancemult>=1)glColor4f(color[i][0]*lightcolor[0],color[i][1]*lightcolor[1],color[i][2]*lightcolor[2],1);
 203                                 if(distancemult<1)glColor4f(color[i][0]*lightcolor[0],color[i][1]*lightcolor[1],color[i][2]*lightcolor[2],1);
 204                         }
 205                         /*
 206                         if(type[i]==snowsprite){
 207                         glRotatef(rotation[i],0,0,1);
 208                         glTranslatef(1,0,0);
 209                         }*/
 210
 211                         glBegin(GL_TRIANGLES);
 212                         glTexCoord2f(1.0f, 1.0f); glVertex3f( .5*size[i], .5*size[i], 0.0f);
 213                         glTexCoord2f(0.0f, 1.0f); glVertex3f(-.5*size[i], .5*size[i], 0.0f);
 214                         glTexCoord2f(1.0f, 0.0f); glVertex3f( .5*size[i],-.5*size[i], 0.0f);
 215                         glTexCoord2f(0.0f, 0.0f); glVertex3f(-.5*size[i],-.5*size[i], 0.0f);
 216                         glTexCoord2f(1.0f, 0.0f); glVertex3f( .5*size[i], -.5*size[i], 0.0f);
 217                         glTexCoord2f(0.0f, 1.0f); glVertex3f(-.5*size[i], .5*size[i], 0.0f);
 218                         glEnd();
 219                 glPopMatrix();
 220         }
 221         tempmult=multiplier;
 222         for(i=numsprites-1;i>=0;i--){
 223                 multiplier=tempmult;
 224                 if(type[i]!=snowsprite)position[i]+=velocity[i]*multiplier;
 225                 if(type[i]!=snowsprite)velocity[i]+=windvector*multiplier;
 226                 if(type[i]==flamesprite||type[i]==smoketype)position[i]+=windvector*multiplier/2;
 227                 if((type[i]==flamesprite||type[i]==weaponflamesprite||type[i]==weaponshinesprite||type[i]==bloodflamesprite))multiplier*=speed[i]*.7;
 228                 alivetime[i]+=multiplier;
 229
 230                 if(type[i]==cloudsprite||type[i]==cloudimpactsprite){
 231                         opacity[i]-=multiplier/2;
 232                         size[i]+=multiplier/2;
 233                         velocity[i].y+=gravity*multiplier*.25;
 234                 }
 235                 if(type[i]==breathsprite){
 236                         opacity[i]-=multiplier/2;
 237                         size[i]+=multiplier/2;
 238                         if(findLength(&velocity[i])<=multiplier)velocity[i]=0;
 239                         else{
 240                                 XYZ slowdown;
 241                                 slowdown=velocity[i]*-1;
 242                                 Normalise(&slowdown);
 243                                 slowdown*=multiplier;
 244                                 velocity[i]+=slowdown;
 245                         }
 246                 }
 247                 if(type[i]==snowsprite){
 248                         size[i]-=multiplier/120;
 249                         rotation[i]+=multiplier*360;
 250                         position[i].y-=multiplier;
 251                         position[i]+=windvector*multiplier;
 252                         if(position[i].y<tempviewer.y-6)position[i].y+=12;
 253                         if(position[i].y>tempviewer.y+6)position[i].y-=12;
 254                         if(position[i].z<tempviewer.z-6)position[i].z+=12;
 255                         if(position[i].z>tempviewer.z+6)position[i].z-=12;
 256                         if(position[i].x<tempviewer.x-6)position[i].x+=12;
 257                         if(position[i].x>tempviewer.x+6)position[i].x-=12;
 258                 }
 259                 if(type[i]==bloodsprite){
 260                         bool spritehit=0;
 261                         rotation[i]+=multiplier*100;
 262                         velocity[i].y+=gravity*multiplier;
 263                         if(check){
 264                                 XYZ where,startpoint,endpoint,movepoint,footpoint;
 265                                 float rotationpoint;
 266                                 int whichtri;
 267
 268                                 for(j=0;j<numplayers;j++){
 269                                         if(!spritehit&&player[j].dead&&alivetime[i]>.1){
 270                                                 where=oldposition[i];
 271                                                 where-=player[j].coords;
 272                                                 if(!player[j].skeleton.free)where=DoRotation(where,0,-player[j].rotation,0);
 273                                                 startpoint=where;
 274                                                 where=position[i];
 275                                                 where-=player[j].coords;
 276                                                 if(!player[j].skeleton.free)where=DoRotation(where,0,-player[j].rotation,0);
 277                                                 endpoint=where;
 278
 279                                                 movepoint=0;
 280                                                 rotationpoint=0;
 281                                                 whichtri=player[j].skeleton.drawmodel.LineCheck(&startpoint,&endpoint, &footpoint, &movepoint, &rotationpoint);
 282                                                 if(whichtri!=-1){
 283                                                         spritehit=1;
 284                                                         player[j].DoBloodBigWhere(0,160,oldposition[i]);
 285                                                         DeleteSprite(i);
 286                                                 }
 287                                         }
 288                                 }
 289
 290                                 whichpatchx=position[i].x/(terrain.size/subdivision*terrain.scale*terraindetail);
 291                                 whichpatchz=position[i].z/(terrain.size/subdivision*terrain.scale*terraindetail);
 292                                 if(whichpatchx>0&&whichpatchz>0&&whichpatchx<subdivision&&whichpatchz<subdivision)
 293                                         if(terrain.patchobjectnum[whichpatchx][whichpatchz]){
 294                                                 if(!spritehit)
 295                                                         for(j=0;j<terrain.patchobjectnum[whichpatchx][whichpatchz];j++){
 296                                                                 k=terrain.patchobjects[whichpatchx][whichpatchz][j];
 297                                                                 start=oldposition[i];
 298                                                                 end=position[i];
 299                                                                 if(!spritehit)
 300                                                                         if(objects.model[k].LineCheck(&start,&end,&colpoint,&objects.position[k],&objects.rotation[k])!=-1){
 301                                                                                 if(detail==2||(detail==1&&abs(Random()%4)==0)||(detail==0&&abs(Random()%8)==0))objects.model[k].MakeDecal(blooddecalfast,DoRotation(colpoint-objects.position[k],0,-objects.rotation[k],0),size[i]*1.6/*+abs((float)(Random()%100))/2400*/,.5,Random()%360);
 302                                                                                 DeleteSprite(i);
 303                                                                                 spritehit=1;
 304                                                                         }
 305                                                         }
 306                                         }
 307                                         if(!spritehit)
 308                                                 if(position[i].y<terrain.getHeight(position[i].x,position[i].z)){
 309                                                         terrain.MakeDecal(blooddecalfast,position[i],size[i]*1.6/*+abs((float)(Random()%100))/2400*/,.6,Random()%360);
 310                                                         DeleteSprite(i);
 311                                                 }
 312                         }
 313                 }
 314                 if(type[i]==splintersprite){
 315                         rotation[i]+=rotatespeed[i]*multiplier;
 316                         opacity[i]-=multiplier/2;
 317                         if(special[i]==0||special[i]==2||special[i]==3)velocity[i].y+=gravity*multiplier;
 318                         if(special[i]==1)velocity[i].y+=gravity*multiplier*.5;
 319                 }
 320                 if(type[i]==flamesprite||type[i]==weaponflamesprite||type[i]==weaponshinesprite||type[i]==bloodflamesprite){
 321                         rotation[i]+=multiplier*rotatespeed[i];
 322                         opacity[i]-=multiplier*5/4;
 323                         if(type[i]!=weaponshinesprite&&type[i]!=bloodflamesprite)
 324                                 if(opacity[i]<.5&&opacity[i]+multiplier*5/4>=.5&&(abs(Random()%4)==0||(initialsize[i]>2&&Random()%2==0)))MakeSprite(smoketype, position[i],velocity[i], .9,.9,.6, size[i]*1.2, .4);
 325                         if(alivetime[i]>.14&&(type[i]==flamesprite)){
 326                                 velocity[i]=0;
 327                                 velocity[i].y=1.5;
 328                         }
 329                 }
 330                 /*if(type[i]==smoketype){
 331                 opacity[i]-=multiplier/3/initialsize[i];
 332                 size[i]+=multiplier;
 333                 velocity[i]=0;
 334                 velocity[i].y=1.5;
 335                 rotation[i]+=multiplier*rotatespeed[i]/5;
 336                 }*/
 337                 if(type[i]==smoketype){
 338                         opacity[i]-=multiplier/3/initialsize[i];
 339                         color[i][0]-=multiplier;
 340                         color[i][1]-=multiplier;
 341                         color[i][2]-=multiplier;
 342                         if(color[i][0]<.6)color[i][0]=.6;
 343                         if(color[i][1]<.6)color[i][1]=.6;
 344                         if(color[i][2]<.6)color[i][2]=.6;
 345                         size[i]+=multiplier;
 346                         velocity[i]=0;
 347                         velocity[i].y=1.5;
 348                         rotation[i]+=multiplier*rotatespeed[i]/5;
 349                 }
 350                 if(opacity[i]<=0||size[i]<=0)DeleteSprite(i);
 351         }
 352         if(check)
 353                 for(i=numsprites-1;i>=0;i--){
 354                         oldposition[i]=position[i];
 355                 }
 356                 glAlphaFunc(GL_GREATER, 0.0001);
 357                 glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
 358 }
 359
 360 void Sprites::DeleteSprite(int which)
 361 {
 362         type[which]=type[numsprites-1];
 363         rotation[which]=rotation[numsprites-1];
 364         alivetime[which]=alivetime[numsprites-1];
 365         opacity[which]=opacity[numsprites-1];
 366         position[which]=position[numsprites-1];
 367         velocity[which]=velocity[numsprites-1];
 368         size[which]=size[numsprites-1];
 369         speed[which]=speed[numsprites-1];
 370         special[which]=special[numsprites-1];
 371         color[which][0]=color[numsprites-1][0];
 372         color[which][1]=color[numsprites-1][1];
 373         color[which][2]=color[numsprites-1][2];
 374         numsprites--;
 375 }
 376
 377 void Sprites::MakeSprite(int atype, XYZ where, XYZ avelocity, float red, float green, float blue, float asize, float aopacity){
 378         if(numsprites<max_sprites-1){
 379                 if((atype!=bloodsprite&&atype!=bloodflamesprite)||bloodtoggle){
 380                         special[numsprites]=0;
 381                         type[numsprites]=atype;
 382                         position[numsprites]=where;
 383                         oldposition[numsprites]=where;
 384                         velocity[numsprites]=avelocity;
 385                         alivetime[numsprites]=0;
 386                         opacity[numsprites]=aopacity;
 387                         size[numsprites]=asize;
 388                         initialsize[numsprites]=asize;
 389                         color[numsprites][0]=red;
 390                         color[numsprites][1]=green;
 391                         color[numsprites][2]=blue;
 392                         rotatespeed[numsprites]=abs(Random()%720)-360;
 393                         speed[numsprites]=float(abs(Random()%100))/200+1.5;
 394                 }
 395                 numsprites++;
 396         }
 397 }
 398
 399 Sprites::Sprites()
 400 {
 401         cloudtexture = 0;
 402         cloudimpacttexture = 0;
 403         bloodtexture = 0;
 404         flametexture = 0;
 405         bloodflametexture = 0;
 406         smoketexture = 0;
 407         snowflaketexture = 0;
 408         shinetexture = 0;
 409         splintertexture = 0;
 410         leaftexture = 0;
 411         toothtexture = 0;
 412
 413         memset(oldposition, 0, sizeof(oldposition));
 414         memset(position, 0, sizeof(position));
 415         memset(velocity, 0, sizeof(velocity));
 416         memset(size, 0, sizeof(size));
 417         memset(initialsize, 0, sizeof(initialsize));
 418         memset(type, 0, sizeof(type));
 419         memset(special, 0, sizeof(special));
 420         memset(color, 0, sizeof(color));
 421         memset(opacity, 0, sizeof(opacity));
 422         memset(rotation, 0, sizeof(rotation));
 423         memset(alivetime, 0, sizeof(alivetime));
 424         memset(speed, 0, sizeof(speed));
 425         memset(rotatespeed, 0, sizeof(rotatespeed));
 426
 427         checkdelay = 0;
 428         numsprites = 0;
 429 }
 430 Sprites::~Sprites()
 431 {
 432         if (toothtexture) glDeleteTextures( 1, &toothtexture );
 433         if (cloudtexture) glDeleteTextures( 1, &cloudtexture );
 434         if (cloudimpacttexture) glDeleteTextures( 1, &cloudimpacttexture );
 435         if (bloodtexture) glDeleteTextures( 1, &bloodtexture );
 436         if (flametexture) glDeleteTextures( 1, &flametexture );
 437         if (bloodflametexture) glDeleteTextures( 1, &bloodflametexture );
 438         if (smoketexture) glDeleteTextures( 1, &smoketexture );
 439         if (snowflaketexture) glDeleteTextures( 1, &snowflaketexture );
 440         if (shinetexture) glDeleteTextures( 1, &shinetexture );
 441         if (splintertexture) glDeleteTextures( 1, &splintertexture );
 442         if (leaftexture) glDeleteTextures( 1, &leaftexture );
 443 }
 444