src/starfield/supernova.cpp

   1 /*
   2  * Copyright (C) Volition, Inc. 1999.  All rights reserved.
   3  *
   4  * All source code herein is the property of Volition, Inc. You may not sell
   5  * or otherwise commercially exploit the source or things you created based on
   6  * the source.
   7  */
   8
   9 /*
  10  * $Logfile: /Freespace2/code/Starfield/Supernova.cpp $
  11  * $Revision$
  12  * $Date$
  13  * $Author$
  14  *
  15  * Include file for nebula stuff
  16  *
  17  * $Log$
  18  * Revision 1.3  2002/06/09 04:41:27  relnev
  19  * added copyright header
  20  *
  21  * Revision 1.2  2002/05/07 03:16:52  theoddone33
  22  * The Great Newline Fix
  23  *
  24  * Revision 1.1.1.1  2002/05/03 03:28:10  root
  25  * Initial import.
  26  *
  27  *
  28  * 5     9/09/99 11:40p Dave
  29  * Handle an Assert() in beam code. Added supernova sounds. Play the right
  30  * 2 end movies properly, based upon what the player did in the mission.
  31  *
  32  * 4     9/03/99 1:32a Dave
  33  * CD checking by act. Added support to play 2 cutscenes in a row
  34  * seamlessly. Fixed super low level cfile bug related to files in the
  35  * root directory of a CD. Added cheat code to set campaign mission # in
  36  * main hall.
  37  *
  38  * 3     7/31/99 4:15p Dave
  39  * Fixed supernova particle velocities. Handle OBJ_NONE in target
  40  * monitoring view. Properly use objectives notify gauge colors.
  41  *
  42  * 2     7/21/99 8:10p Dave
  43  * First run of supernova effect.
  44  *
  45  *
  46  * $NoKeywords: $
  47  */
  48
  49 #include "freespace.h"
  50 #include "vecmat.h"
  51 #include "object.h"
  52 #include "lighting.h"
  53 #include "starfield.h"
  54 #include "supernova.h"
  55 #include "particle.h"
  56 #include "ship.h"
  57 #include "timer.h"
  58 #include "model.h"
  59 #include "popupdead.h"
  60 #include "key.h"
  61 #include "missioncampaign.h"
  62 #include "gamesequence.h"
  63 #include "gamesnd.h"
  64 #include "sound.h"
  65
  66
  67 // --------------------------------------------------------------------------------------------------------------------------
  68 // SUPERNOVA DEFINES/VARS
  69 //
  70
  71 // supernova time 1
  72 #define SUPERNOVA_SOUND_1_TIME                                  15.0f
  73 #define SUPERNOVA_SOUND_2_TIME                                  5.0f
  74 int Supernova_sound_1_played = 0;
  75 int Supernova_sound_2_played = 0;
  76
  77 // countdown for supernova
  78 float Supernova_time_total = -1.0f;
  79 float Supernova_time = -1.0f;
  80 int Supernova_finished = 0;
  81 int Supernova_popup = 0;
  82 float Supernova_fade_to_white = 0.0f;
  83 int Supernova_particle_stamp = -1;
  84
  85 // supernova camera pos
  86 vector Supernova_camera_pos;
  87 matrix Supernova_camera_orient;
  88
  89 int Supernova_status = SUPERNOVA_NONE;
  90
  91 // --------------------------------------------------------------------------------------------------------------------------
  92 // SUPERNOVA FUNCTIONS
  93 //
  94
  95 // level init
  96 void supernova_level_init()
  97 {
  98         Supernova_time_total = -1.0f;
  99         Supernova_time = -1.0f;
 100         Supernova_finished = 0;
 101         Supernova_fade_to_white = 0.0f;
 102         Supernova_popup = 0;
 103         Supernova_particle_stamp = -1;
 104
 105         Supernova_sound_1_played = 0;
 106         Supernova_sound_2_played = 0;
 107
 108         Supernova_status = SUPERNOVA_NONE;
 109 }
 110
 111 // start a supernova
 112 void supernova_start(int seconds)
 113 {
 114         // bogus time
 115         if((float)seconds < SUPERNOVA_CUT_TIME){
 116                 return;
 117         }
 118
 119         // no supernova in multiplayer
 120         if(Game_mode & GM_MULTIPLAYER){
 121                 return;
 122         }
 123
 124         // only good if we have one sun
 125         if(Num_suns != 1){
 126                 return;
 127         }
 128
 129         Supernova_time_total = (float)seconds;
 130         Supernova_time = (float)seconds;
 131         Supernova_finished = 0;
 132         Supernova_fade_to_white = 0.0f;
 133         Supernova_popup = 0;
 134         Supernova_particle_stamp = -1;
 135
 136         Supernova_status = SUPERNOVA_STARTED;
 137 }
 138
 139 int sn_particles = 100;
 140 DCF(sn_part, "")
 141 {
 142         dc_get_arg(ARG_INT);
 143         sn_particles = Dc_arg_int;
 144 }
 145 void supernova_do_particles()
 146 {
 147         int idx;
 148         vector a, b, ta, tb;
 149         vector norm, sun_temp;
 150
 151         // no player ship
 152         if((Player_obj == NULL) || (Player_ship == NULL)){
 153                 return;
 154         }
 155
 156         // timestamp
 157         if((Supernova_particle_stamp == -1) || timestamp_elapsed(Supernova_particle_stamp)){
 158                 Supernova_particle_stamp = timestamp(sn_particles);
 159
 160                 // get particle norm
 161                 stars_get_sun_pos(0, &sun_temp);
 162                 vm_vec_add2(&sun_temp, &Player_obj->pos);
 163                 vm_vec_sub(&norm, &Player_obj->pos, &sun_temp);
 164                 vm_vec_normalize(&norm);
 165
 166                 particle_emitter whee;
 167                 whee.max_life = 1.0f;
 168                 whee.min_life = 0.6f;
 169                 whee.max_vel = 50.0f;
 170                 whee.min_vel = 25.0f;
 171                 whee.normal_variance = 0.75f;
 172                 whee.num_high = 5;
 173                 whee.num_low = 2;
 174                 whee.min_rad = 0.5f;
 175                 whee.max_rad = 1.25f;
 176
 177                 // emit
 178                 for(idx=0; idx<10; idx++){
 179                         submodel_get_two_random_points(Player_ship->modelnum, 0, &ta, &tb);
 180
 181                         // rotate into world space
 182                         vm_vec_unrotate(&a, &ta, &Player_obj->orient);
 183                         vm_vec_add2(&a, &Player_obj->pos);
 184                         whee.pos = a;
 185                         whee.vel = norm;
 186                         vm_vec_scale(&whee.vel, 30.0f);
 187                         vm_vec_add2(&whee.vel, &Player_obj->phys_info.vel);
 188                         whee.normal = norm;
 189                         particle_emit(&whee, PARTICLE_FIRE, (uint)-1);
 190
 191                         vm_vec_unrotate(&b, &tb, &Player_obj->orient);
 192                         vm_vec_add2(&b, &Player_obj->pos);
 193                         whee.pos = b;
 194                         particle_emit(&whee, PARTICLE_FIRE, (uint)-1);
 195                 }
 196         }
 197 }
 198
 199 // call once per frame
 200 float sn_shudder = 0.45f;
 201 DCF(sn_shud, "")
 202 {
 203         dc_get_arg(ARG_FLOAT);
 204         sn_shudder = Dc_arg_float;
 205 }
 206
 207 void supernova_process()
 208 {
 209         int sn_stage;
 210
 211         // if the supernova is running
 212         sn_stage = supernova_active();
 213         if(sn_stage){
 214                 Supernova_time -= flFrametime;
 215
 216                 // sound stuff
 217                 if((Supernova_time <= SUPERNOVA_SOUND_1_TIME) && !Supernova_sound_1_played){
 218                         Supernova_sound_1_played = 1;
 219                         snd_play(&Snds[SND_SUPERNOVA_1], 0.0f, 1.0f, SND_PRIORITY_MUST_PLAY);
 220                 }
 221                 if((Supernova_time <= SUPERNOVA_SOUND_2_TIME) && !Supernova_sound_2_played){
 222                         Supernova_sound_2_played = 1;
 223                         snd_play(&Snds[SND_SUPERNOVA_2], 0.0f, 1.0f, SND_PRIORITY_MUST_PLAY);
 224                 }
 225
 226                 // if we've crossed from stage 1 to stage 2 kill all particles and stick a bunch on the player ship
 227                 if((sn_stage == 1) && (supernova_active() == 2)){
 228                         // first kill all active particles so we have a bunch of free ones
 229                         particle_kill_all();
 230                 }
 231
 232                 // if we're in stage 2, emit particles
 233                 if((sn_stage >= 2) && (sn_stage != 5)){
 234                         supernova_do_particles();
 235                 }
 236
 237                 // if we've got negative. the supernova is done
 238                 if(Supernova_time < 0.0f){
 239                         Supernova_finished = 1;
 240                         Supernova_fade_to_white += flFrametime;
 241
 242                         // start the dead popup
 243                         if(Supernova_fade_to_white >= SUPERNOVA_FADE_TO_WHITE_TIME){
 244                                 if(!Supernova_popup){
 245                                         // main freespace 2 campaign? if so - end it now
 246                                         if((Game_mode & GM_CAMPAIGN_MODE) && !stricmp(Campaign.filename, "freespace2") && Campaign_ended_in_mission){
 247                                                 gameseq_post_event(GS_EVENT_END_CAMPAIGN);
 248                                         } else {
 249                                                 popupdead_start();
 250                                         }
 251                                         Supernova_popup = 1;
 252                                 }
 253                                 Supernova_finished = 2;
 254                         }
 255                 }
 256         }
 257 }
 258
 259 // is there a supernova active
 260 int supernova_active()
 261 {
 262         // if the supernova has "finished". fade to white and dead popup
 263         if(Supernova_finished == 1){
 264                 Supernova_status = SUPERNOVA_HIT;
 265                 return 4;
 266         }
 267         if(Supernova_finished == 2){
 268                 Supernova_status = SUPERNOVA_HIT;
 269                 return 5;
 270         }
 271
 272         // no supernova
 273         if((Supernova_time_total <= 0.0f) || (Supernova_time <= 0.0f)){
 274                 return 0;
 275         }
 276
 277         // final stage,
 278         if(Supernova_time < (SUPERNOVA_CUT_TIME - SUPERNOVA_CAMERA_MOVE_TIME)){
 279                 Supernova_status = SUPERNOVA_HIT;
 280                 return 3;
 281         }
 282
 283         // 2nd stage
 284         if(Supernova_time < SUPERNOVA_CUT_TIME){
 285                 Supernova_status = SUPERNOVA_HIT;
 286                 return 2;
 287         }
 288
 289         // first stage
 290         return 1;
 291 }
 292
 293 // time left before the supernova hits
 294 float supernova_time_left()
 295 {
 296         return Supernova_time;
 297 }
 298
 299 // pct complete the supernova (0.0 to 1.0)
 300 float supernova_pct_complete()
 301 {
 302         // bogus
 303         if(!supernova_active()){
 304                 return -1.0f;
 305         }
 306
 307         return (Supernova_time_total - Supernova_time) / Supernova_time_total;
 308 }
 309
 310 // if the camera should cut to the "you-are-toast" cam
 311 int supernova_camera_cut()
 312 {
 313         // if we're not in a supernova
 314         if(!supernova_active()){
 315                 return 0;
 316         }
 317
 318         // if we're past the critical time
 319         if(Supernova_time <= SUPERNOVA_CUT_TIME){
 320                 return 1;
 321         }
 322
 323         // no cut yet
 324         return 0;
 325 }
 326
 327 // apply a shake to the orient matrix
 328 void supernova_apply_shake(matrix *eye_orient, float intensity)
 329 {
 330         angles  tangles;
 331
 332         tangles.p = 0.0f;
 333         tangles.h = 0.0f;
 334         tangles.b = 0.0f;
 335
 336         // Make eye shake due to engine wash
 337         int r1 = myrand();
 338         int r2 = myrand();
 339         tangles.p += 0.07f * intensity * (float) (r1-RAND_MAX/2)/RAND_MAX;
 340         tangles.h += 0.07f * intensity * (float) (r2-RAND_MAX/2)/RAND_MAX;
 341
 342         matrix  tm, tm2;
 343         vm_angles_2_matrix(&tm, &tangles);
 344         Assert(vm_vec_mag(&tm.fvec) > 0.0f);
 345         Assert(vm_vec_mag(&tm.rvec) > 0.0f);
 346         Assert(vm_vec_mag(&tm.uvec) > 0.0f);
 347         vm_matrix_x_matrix(&tm2, eye_orient, &tm);
 348         *eye_orient = tm2;
 349 }
 350
 351 // get view params from supernova
 352 float sn_distance = 300.0f;                             // shockwave moving at 1000/ms ?
 353 float sn_cam_distance = 25.0f;
 354 DCF(sn_dist, "")
 355 {
 356         dc_get_arg(ARG_FLOAT);
 357         sn_distance = Dc_arg_float;
 358 }
 359 DCF(sn_cam_dist, "")
 360 {
 361         dc_get_arg(ARG_FLOAT);
 362         sn_cam_distance = Dc_arg_float;
 363 }
 364 void supernova_set_view(vector *eye_pos, matrix *eye_orient)
 365 {
 366         vector at;
 367         vector sun_temp, sun;
 368         vector move;
 369         vector view;
 370         float cut_pct = 1.0f - (Supernova_time / SUPERNOVA_CUT_TIME);
 371
 372         // set the controls for the heart of the sun
 373         stars_get_sun_pos(0, &sun_temp);
 374         vm_vec_add2(&sun_temp, &Player_obj->pos);
 375         vm_vec_sub(&sun, &sun_temp, &Player_obj->pos);
 376         vm_vec_normalize(&sun);
 377
 378         // always set the camera pos
 379         matrix whee;
 380         vm_vector_2_matrix(&whee, &move, NULL, NULL);
 381         vm_vec_scale_add(&Supernova_camera_pos, &Player_obj->pos, &whee.rvec, sn_cam_distance);
 382         vm_vec_scale_add2(&Supernova_camera_pos, &whee.uvec, 30.0f);
 383         *eye_pos = Supernova_camera_pos;
 384
 385         // if we're no longer moving the camera
 386         if(Supernova_time < (SUPERNOVA_CUT_TIME - SUPERNOVA_CAMERA_MOVE_TIME)){
 387                 // *eye_pos = Supernova_camera_pos;
 388                 *eye_orient = Supernova_camera_orient;
 389
 390                 // shake the eye
 391                 supernova_apply_shake(eye_orient, cut_pct * sn_shudder);
 392
 393                 return;
 394         }
 395         // otherwise move it
 396         else {
 397                 // get a vector somewhere between the supernova shockwave and the player ship
 398                 at = Player_obj->pos;
 399                 vm_vec_scale_add2(&at, &sun, sn_distance);
 400                 vm_vec_sub(&move, &Player_obj->pos, &at);
 401                 vm_vec_normalize(&move);
 402
 403                 // linearly move towards the player pos
 404                 float pct = ((SUPERNOVA_CUT_TIME - Supernova_time) / SUPERNOVA_CAMERA_MOVE_TIME);
 405                 vm_vec_scale_add2(&at, &move, sn_distance * pct);
 406
 407                 *eye_pos = Supernova_camera_pos;
 408                 vm_vec_sub(&view, &at, eye_pos);
 409                 vm_vec_normalize(&view);
 410                 vm_vector_2_matrix(&Supernova_camera_orient, &view, NULL, NULL);
 411                 *eye_orient = Supernova_camera_orient;
 412         }
 413
 414         // shake the eye
 415         supernova_apply_shake(eye_orient, cut_pct * sn_shudder);
 416 }