2 * Copyright (C) Volition, Inc. 1999. All rights reserved.
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
10 * $Logfile: /Freespace2/code/Ship/ShipFX.cpp $
15 * Routines for ship effects (as in special)
18 * Revision 1.7 2004/07/04 11:39:06 taylor
19 * fix missing debrief text, crash on exit, path separator's, warning fixes, no GR_SOFT
21 * Revision 1.6 2003/05/25 02:30:44 taylor
24 * Revision 1.5 2002/09/04 01:12:11 relnev
25 * changes to screen backup/mouse drawing code. removed a few warnings.
27 * Revision 1.4 2002/06/17 06:33:11 relnev
28 * ryan's struct patch for gcc 2.95
30 * Revision 1.3 2002/06/09 04:41:26 relnev
31 * added copyright header
33 * Revision 1.2 2002/05/07 03:16:52 theoddone33
34 * The Great Newline Fix
36 * Revision 1.1.1.1 2002/05/03 03:28:10 root
40 * 51 9/13/99 4:53p Andsager
42 * 50 9/13/99 10:09a Andsager
43 * Add debug console commands to lower model render detail and fireball
44 * LOD for big ship explosiosns.
46 * 49 9/08/99 10:44p Andsager
47 * Make HUGE ships not die when warping out, after warp effect started.
49 * 48 9/06/99 10:16p Andsager
50 * Modify big ship explosions. Less frequent fireballs, fewer particles,
53 * 47 9/05/99 11:10a Andsager
54 * Fix up which split ship get debris pieces. Dont render debris pieces
55 * for split ships until they are near clip plane.
57 * 46 9/02/99 12:55a Mikek
58 * Scale engine wash by speed.
60 * 45 9/01/99 10:15a Dave
62 * 44 8/31/99 10:13p Andsager
63 * Add Knossos warp effect fireball
65 * 43 8/23/99 11:09a Andsager
66 * Round 2 of Knossos explosion
68 * 42 8/20/99 2:16p Andsager
69 * Make only supercaps slow down extra fast after warping in.
71 * 41 8/20/99 1:42p Andsager
72 * Frist pass on Knossos explosion.
74 * 40 8/19/99 4:36p Andsager
75 * Cleaned up special_warpout
77 * 39 8/16/99 10:04p Andsager
78 * Add special-warp-dist and special-warpout-name sexp for Knossos device
81 * 38 8/16/99 2:01p Andsager
82 * Knossos warp-in warp-out.
84 * 37 8/13/99 10:49a Andsager
85 * Knossos and HUGE ship warp out. HUGE ship warp in. Stealth search
86 * modes dont collide big ships.
88 * 36 8/05/99 2:06a Dave
91 * 35 7/18/99 12:32p Dave
92 * Randomly oriented shockwaves.
94 * 34 7/09/99 12:52a Andsager
95 * Modify engine wash (1) less damage (2) only at a closer range (3) no
96 * damage when engine is disabled
98 * 33 7/06/99 10:45a Andsager
99 * Modify engine wash to work on any ship that is not small. Add AWACS
102 * 32 7/02/99 9:55p Dave
103 * Player engine wash sound.
105 * 31 7/02/99 4:31p Dave
106 * Much more sophisticated lightning support.
108 * 30 7/01/99 4:23p Dave
109 * Full support for multiple linked ambient engine sounds. Added "big
112 * 29 7/01/99 11:44a Dave
113 * Updated object sound system to allow multiple obj sounds per ship.
114 * Added hit-by-beam sound. Added killed by beam sound.
116 * 28 6/17/99 12:06p Andsager
117 * Add a fireball for each live debris piece.
119 * 27 6/14/99 3:21p Andsager
120 * Allow collisions between ship and its debris. Fix up collision pairs
121 * when large ship is warping out.
123 * 26 5/27/99 12:14p Andsager
124 * Some fixes for live debris when more than one subsys on ship with live
125 * debris. Set subsys strength (when 0) blows off subsystem.
126 * sexp_hits_left_subsystem works for SUBSYSTEM_UNKNOWN.
128 * 25 5/26/99 11:46a Dave
129 * Added ship-blasting lighting and made the randomization of lighting
130 * much more customizable.
132 * 24 5/25/99 10:05a Andsager
133 * Fix assert with wing warping out with no warp effect.
135 * 23 5/24/99 5:45p Dave
136 * Added detail levels to the nebula, with a decent speedup. Split nebula
137 * lightning into its own section.
139 * 22 5/21/99 5:03p Andsager
140 * Add code to display engine wash death. Modify ship_kill_packet
142 * 21 5/19/99 11:09a Andsager
143 * Turn on engine wash. Check every 1/4 sec.
145 * 20 5/18/99 1:30p Dave
146 * Added muzzle flash table stuff.
148 * 19 5/17/99 10:33a Dave
151 * 18 5/11/99 10:16p Andsager
152 * First pass on engine wash effect. Rotation (control input), damage,
155 * 17 5/09/99 6:00p Dave
156 * Lots of cool new effects. E3 build tweaks.
158 * 16 4/28/99 11:13p Dave
159 * Temporary checkin of artillery code.
161 * 15 3/29/99 6:17p Dave
162 * More work on demo system. Got just about everything in except for
163 * blowing ships up, secondary weapons and player death/warpout.
165 * 14 3/28/99 5:58p Dave
166 * Added early demo code. Make objects move. Nice and framerate
167 * independant, but not much else. Don't use yet unless you're me :)
169 * 13 3/23/99 2:29p Andsager
170 * Fix shockwaves for kamikazi and Fred defined. Collect together
171 * shockwave_create_info struct.
173 * 12 3/20/99 3:03p Andsager
174 * Fix get_model_cross_section_at_z() from getting invalid index .
176 * 11 3/19/99 9:51a Dave
177 * Checkin to repair massive source safe crash. Also added support for
178 * pof-style nebulae, and some new weapons code.
180 * 10 2/26/99 4:14p Dave
181 * Put in the ability to have multiple shockwaves for ships.
183 * 9 1/29/99 12:47a Dave
184 * Put in sounds for beam weapon. A bunch of interface screens (tech
187 * 8 1/28/99 9:10a Andsager
188 * Particles increased in width, life, number. Max particles increased
190 * 7 1/27/99 9:56a Dave
191 * Temporary checkin of beam weapons for Dan to make cool sounds.
193 * 6 1/11/99 12:42p Andsager
194 * Add live debris - debris which is created from a destroyed subsystem,
195 * when the ship is still alive
197 * 5 11/18/98 10:29a Johnson
198 * fix assert in shipfx_remove_submodel_ship_sparks. submodel may not
199 * have spark and be destroyed.
201 * 4 11/17/98 4:27p Andsager
202 * Stop sparks from emitting from destroyed subobjects
204 * 3 10/20/98 1:39p Andsager
205 * Make so sparks follow animated ship submodels. Modify
206 * ship_weapon_do_hit_stuff() and ship_apply_local_damage() to add
207 * submodel_num. Add submodel_num to multiplayer hit packet.
209 * 2 10/07/98 10:53a Dave
212 * 1 10/07/98 10:51a Dave
219 #include "systemvars.h"
221 #include "fireballs.h"
223 #include "hudtarget.h"
228 #include "3d.h" // needed for View_position, which is used when playing a 3D sound
230 #include "multiutil.h"
233 #include "gamesequence.h"
234 #include "lighting.h"
235 #include "linklist.h"
236 #include "particle.h"
237 #include "multimsgs.h"
238 #include "multiutil.h"
240 #include "freespace.h"
241 #include "muzzleflash.h"
244 #include "neblightning.h"
245 #include "objectsnd.h"
248 extern float flFrametime;
249 extern int Framecount;
252 #define SHIP_CANNON_BITMAP "argh"
253 int Ship_cannon_bitmap = -1;
255 int Player_engine_wash_loop = -1;
257 void shipfx_remove_submodel_ship_sparks(ship *shipp, int submodel_num)
259 SDL_assert(submodel_num != -1);
261 // maybe no active sparks on submodel
262 if (shipp->num_hits == 0) {
266 for (int spark_num=0; spark_num<shipp->num_hits; spark_num++) {
267 if (shipp->sparks[spark_num].submodel_num == submodel_num) {
268 shipp->sparks[spark_num].end_time = timestamp(1);
273 // Check if subsystem has live debris and create
274 // DKA: 5/26/99 make velocity of debris scale according to size of debris subobject (at least for large subobjects)
275 void shipfx_subsystem_mabye_create_live_debris(object *ship_obj, ship *ship_p, ship_subsys *subsys, vector *exp_center, float exp_mag)
278 polymodel *pm = model_get(ship_p->modelnum);
279 int submodel_num = subsys->system_info->subobj_num;
280 submodel_instance_info *sii = &subsys->submodel_info_1;
282 object *live_debris_obj;
283 int i, num_live_debris, live_debris_submodel;
285 // get number of live debris objects to create
286 num_live_debris = pm->submodel[submodel_num].num_live_debris;
287 if (num_live_debris <= 0) {
291 ship_model_start(ship_obj);
294 angles copy_angs = pm->submodel[submodel_num].angs;
295 angles zero_angs = {0.0f, 0.0f, 0.0f};
297 // make sure the axis point is set
298 if ( !sii->axis_set ) {
299 model_init_submodel_axis_pt(sii, ship_p->modelnum, submodel_num);
303 vector model_axis, world_axis, rotvel, world_axis_pt;
304 void model_get_rotating_submodel_axis(vector *model_axis, vector *world_axis, int modelnum, int submodel_num, object *obj);
305 model_get_rotating_submodel_axis(&model_axis, &world_axis, ship_p->modelnum, submodel_num, ship_obj);
306 vm_vec_copy_scale(&rotvel, &world_axis, sii->cur_turn_rate);
308 model_find_world_point(&world_axis_pt, &sii->pt_on_axis, ship_p->modelnum, submodel_num, &ship_obj->orient, &ship_obj->pos);
310 matrix m_rot; // rotation for debris orient about axis
311 vm_quaternion_rotate(&m_rot, vm_vec_mag((vector*)&sii->angs), &model_axis);
314 // create live debris pieces
315 for (i=0; i<num_live_debris; i++) {
316 live_debris_submodel = pm->submodel[submodel_num].live_debris[i];
317 vector start_world_pos, start_model_pos, end_world_pos;
319 // get start world pos
320 vm_vec_zero(&start_world_pos);
321 model_find_world_point(&start_world_pos, &pm->submodel[live_debris_submodel].offset, ship_p->modelnum, live_debris_submodel, &ship_obj->orient, &ship_obj->pos );
323 // convert to model coord of underlying submodel
325 pm->submodel[submodel_num].angs = zero_angs;
326 world_find_model_point(&start_model_pos, &start_world_pos, pm, submodel_num, &ship_obj->orient, &ship_obj->pos);
328 // rotate from submodel coord to world coords
329 // reset angle to current angle
330 pm->submodel[submodel_num].angs = copy_angs;
331 model_find_world_point(&end_world_pos, &start_model_pos, ship_p->modelnum, submodel_num, &ship_obj->orient, &ship_obj->pos);
333 // create fireball here.
334 fireball_create(&end_world_pos, FIREBALL_EXPLOSION_MEDIUM, OBJ_INDEX(ship_obj), pm->submodel[live_debris_submodel].rad);
337 live_debris_obj = debris_create(ship_obj, ship_p->modelnum, live_debris_submodel, &end_world_pos, exp_center, 1, exp_mag);
339 // only do if debris is created
340 if (live_debris_obj) {
341 // get radial velocity of debris
342 vector delta_x, radial_vel;
343 vm_vec_sub(&delta_x, &end_world_pos, &world_axis_pt);
344 vm_vec_crossprod(&radial_vel, &rotvel, &delta_x);
346 if (Ship_info[ship_p->ship_info_index].flags & SIF_KNOSSOS_DEVICE) {
347 // set velocity to cross center of knossos device
348 vector rand_vec, vec_to_center;
350 float vel_mag = vm_vec_mag_quick(&radial_vel) * 1.3f * (0.9f + 0.2f*frand());
351 vm_vec_normalized_dir(&vec_to_center, &world_axis_pt, &end_world_pos);
352 vm_vec_rand_vec_quick(&rand_vec);
353 vm_vec_scale_add2(&vec_to_center, &rand_vec, 0.2f);
354 vm_vec_scale_add2(&live_debris_obj->phys_info.vel, &vec_to_center, vel_mag);
357 // Get rotation of debris object
358 matrix copy = live_debris_obj->orient;
359 vm_matrix_x_matrix(&live_debris_obj->orient, ©, &m_rot);
361 // Add radial velocity (at least as large as exp velocity)
362 vector temp_vel; // explosion velocity with ship_obj velocity removed
363 vm_vec_sub(&temp_vel, &live_debris_obj->phys_info.vel, &ship_obj->phys_info.vel);
365 // find magnitudes of radial and temp velocity
366 float vel_mag = vm_vec_mag(&temp_vel);
367 float rotvel_mag = vm_vec_mag(&radial_vel);
369 if (rotvel_mag > 0.1) {
370 float scale = (1.2f + 0.2f * frand()) * vel_mag / rotvel_mag;
371 // always add *at least* rotvel
376 if (exp_mag > 1) { // whole ship going down
380 if (Ship_info[ship_p->ship_info_index].flags & SIF_KNOSSOS_DEVICE) {
384 vm_vec_scale_add2(&live_debris_obj->phys_info.vel, &radial_vel, scale);
387 // scale up speed of debris if ship_obj > 125, but not for knossos
388 if (ship_obj->radius > 250 && !(Ship_info[ship_p->ship_info_index].flags & SIF_KNOSSOS_DEVICE)) {
389 vm_vec_scale(&live_debris_obj->phys_info.vel, ship_obj->radius/250.0f);
395 ship_model_stop(ship_obj);
398 void set_ship_submodel_as_blown_off(ship *shipp, char *name)
402 // go through list of ship subsystems and find name
403 ship_subsys *pss = NULL;
404 for (pss=GET_FIRST(&shipp->subsys_list); pss!=END_OF_LIST(&shipp->subsys_list); pss=GET_NEXT(pss)) {
405 if ( SDL_strcasecmp(pss->system_info->name, name) == 0) {
411 // set its blown off flag to TRUE
414 pss->submodel_info_1.blown_off = 1;
419 // Create debris for ship submodel which has live debris (at ship death)
420 // when ship submodel has not already been blown off (and hence liberated live debris)
421 void shipfx_maybe_create_live_debris_at_ship_death( object *ship_obj )
423 // if ship has live debris, detonate that subsystem now
424 // search for any live debris
426 ship *shipp = &Ships[ship_obj->instance];
427 polymodel *pm = model_get(shipp->modelnum);
429 int live_debris_submodel = -1;
430 for (int idx=0; idx<pm->num_debris_objects; idx++) {
431 if (pm->submodel[pm->debris_objects[idx]].is_live_debris) {
432 live_debris_submodel = pm->debris_objects[idx];
434 // get submodel that produces live debris
435 int model_get_parent_submodel_for_live_debris( int model_num, int live_debris_model_num );
436 int parent = model_get_parent_submodel_for_live_debris( shipp->modelnum, live_debris_submodel);
437 SDL_assert(parent != -1);
439 // set model values only once (esp blown off)
440 ship_model_start(ship_obj);
442 // check if already blown off (ship model set)
443 if ( !pm->submodel[parent].blown_off ) {
445 // get ship_subsys for live_debris
446 // Go through all subsystems and look for submodel the subsystems with "parent" submodel.
447 ship_subsys *pss = NULL;
448 for ( pss = GET_FIRST(&shipp->subsys_list); pss != END_OF_LIST(&shipp->subsys_list); pss = GET_NEXT(pss) ) {
449 if (pss->system_info->subobj_num == parent) {
454 SDL_assert (pss != NULL);
456 vector exp_center, tmp = ZERO_VECTOR;
457 model_find_world_point(&exp_center, &tmp, shipp->modelnum, parent, &ship_obj->orient, &ship_obj->pos );
459 // if not blown off, blow it off
460 shipfx_subsystem_mabye_create_live_debris(ship_obj, shipp, pss, &exp_center, 3.0f);
462 // now set subsystem as blown off, so we only get one copy
463 pm->submodel[parent].blown_off = 1;
464 set_ship_submodel_as_blown_off(&Ships[ship_obj->instance], pss->system_info->name);
471 ship_model_stop(ship_obj);
475 void shipfx_blow_off_subsystem(object *ship_obj,ship *ship_p,ship_subsys *subsys, vector *exp_center)
479 model_subsystem *psub = subsys->system_info;
481 get_subsystem_world_pos(ship_obj, subsys, &subobj_pos);
484 if ( psub->turret_gun_sobj > -1 )
485 debris_create( ship_obj, ship_p->modelnum, psub->turret_gun_sobj, &subobj_pos, exp_center, 0, 1.0f );
487 if ( psub->subobj_num > -1 )
488 debris_create( ship_obj, ship_p->modelnum, psub->subobj_num, &subobj_pos, exp_center, 0, 1.0f );
490 // get rid of sparks on submodel that is destroyed
491 shipfx_remove_submodel_ship_sparks(ship_p, psub->subobj_num);
493 // create debris shards
494 shipfx_blow_up_model(ship_obj, ship_p->modelnum, psub->subobj_num, 50, &subobj_pos );
496 // create live debris objects, if any
497 // TODO: some MULITPLAYER implcations here!!
498 shipfx_subsystem_mabye_create_live_debris(ship_obj, ship_p, subsys, exp_center, 1.0f);
500 // create first fireball
501 fireball_create( &subobj_pos, FIREBALL_EXPLOSION_MEDIUM, OBJ_INDEX(ship_obj), psub->radius );
505 void shipfx_blow_up_hull(object *obj, int model, vector *exp_center)
512 pm = model_get(model);
515 // in multiplayer, send a debris_hull_create packet. Save/restore the debris signature
516 // when in misison only (since we can create debris pieces before mission starts)
518 if ( (Game_mode & GM_MULTIPLAYER) && (Game_mode & GM_IN_MISSION) ) {
519 sig_save = multi_get_next_network_signature( MULTI_SIG_DEBRIS );
520 multi_set_network_signature( (ushort)(Ships[obj->instance].arrival_distance), MULTI_SIG_DEBRIS );
523 bool try_live_debris = true;
524 for (i=0; i<pm->num_debris_objects; i++ ) {
525 if (! pm->submodel[pm->debris_objects[i]].is_live_debris) {
526 vector tmp = ZERO_VECTOR;
527 model_find_world_point(&tmp, &pm->submodel[pm->debris_objects[i]].offset, model, 0, &obj->orient, &obj->pos );
528 debris_create( obj, model, pm->debris_objects[i], &tmp, exp_center, 1, 3.0f );
530 if ( try_live_debris ) {
531 // only create live debris once
532 // this creates *all* the live debris for *all* the currently live subsystems.
533 try_live_debris = false;
534 shipfx_maybe_create_live_debris_at_ship_death(obj);
539 // restore the ship signature to it's original value.
540 if ( (Game_mode & GM_MULTIPLAYER) && (Game_mode & GM_IN_MISSION) ) {
541 multi_set_network_signature( sig_save, MULTI_SIG_DEBRIS );
546 // Creates "ndebris" pieces of debris on random verts of the the "submodel" in the
548 void shipfx_blow_up_model(object *obj,int model, int submodel, int ndebris, vector *exp_center )
552 // if in a multiplayer game -- seed the random number generator with a value that will be the same
553 // on all clients in the game -- the net_signature of the object works nicely -- since doing so should
554 // ensure that all pieces of debris will get scattered in same direction on all machines
555 if ( Game_mode & GM_MULTIPLAYER )
556 srand( obj->net_signature );
558 // made a change to allow anyone but multiplayer client to blow up hull. Clients will do it when
559 // they get the create packet
560 if ( submodel == 0 ) {
561 shipfx_blow_up_hull(obj,model, exp_center );
564 for (i=0; i<ndebris; i++ ) {
567 // Gets two random points on the surface of a submodel
568 submodel_get_two_random_points(model, submodel, &pnt1, &pnt2 );
572 vm_vec_avg( &tmp, &pnt1, &pnt2 );
573 model_find_world_point(&outpnt, &tmp, model,submodel, &obj->orient, &obj->pos );
575 debris_create( obj, -1, -1, &outpnt, exp_center, 0, 1.0f );
580 // =================================================
581 // SHIP WARP IN EFFECT CODE
582 // =================================================
585 // Given an ship, find the radius of it as viewed from the front.
586 static float shipfx_calculate_effect_radius( object *objp )
589 ship *shipp = &Ships[objp->instance];
591 polymodel *pm = model_get( shipp->modelnum );
593 w = pm->maxs.xyz.x - pm->mins.xyz.x;
594 h = pm->maxs.xyz.y - pm->mins.xyz.y;
602 object *docked_objp = ai_find_docked_object( objp );
604 // If ship is docked then center wormhold about their center and make radius large enough.
606 ship *docked_shipp = &Ships[docked_objp->instance];
608 pm = model_get( docked_shipp->modelnum );
610 w = pm->maxs.xyz.x - pm->mins.xyz.x;
611 h = pm->maxs.xyz.y - pm->mins.xyz.y;
622 // How long the stage 1 & stage 2 of warp in effect lasts.
623 // There are different times for small, medium, and large ships.
624 // The appropriate values are picked depending on the ship's
626 #define SHIPFX_WARP_DELAY (2.0f) // time for warp effect to ramp up before ship moves into it.
628 // Give object objp, calculate how long it should take the
629 // ship to go through the warp effect and how fast the ship
630 // should go. For reference, capital ship of 2780m
631 // should take 7 seconds to fly through. Fighters of 30,
632 // should take 1.5 seconds to fly through.
634 #define LARGEST_RAD 1390.0f
635 #define LARGEST_RAD_TIME 7.0f
637 #define SMALLEST_RAD 15.0f
638 #define SMALLEST_RAD_TIME 1.5f
641 static float shipfx_calculate_warp_time( object * objp )
643 // Find rad_percent from 0 to 1, 0 being smallest ship, 1 being largest
644 float rad_percent = (objp->radius-SMALLEST_RAD) / (LARGEST_RAD-SMALLEST_RAD);
645 if ( rad_percent < 0.0f ) {
647 } else if ( rad_percent > 1.0f ) {
650 float rad_time = rad_percent*(LARGEST_RAD_TIME-SMALLEST_RAD_TIME) + SMALLEST_RAD_TIME;
655 // calculate warp speed
656 float shipfx_calculate_warp_speed(object *objp)
660 SDL_assert(objp->type == OBJ_SHIP);
661 if (objp->type != OBJ_SHIP) {
662 length = 2.0f * objp->radius;
664 length = ship_get_length(&Ships[objp->instance]);
666 return length / shipfx_calculate_warp_time(objp);
670 // This is called to actually warp this object in
671 // after all the flashy fx are done, or if the flashy
672 // fx don't work for some reason.
673 void shipfx_actually_warpin( ship *shipp, object *objp )
675 shipp->flags &= (~SF_ARRIVING_STAGE_1);
676 shipp->flags &= (~SF_ARRIVING_STAGE_2);
678 // let physics in on it too.
679 objp->phys_info.flags &= (~PF_WARP_IN);
682 // JAS - code to start the ship doing the warp in effect
683 // This also starts the animating 3d effect playing.
684 // There are two modes, stage 1 and stage 2. Stage 1 is
685 // when the ship just invisibly waits for a certain time
686 // period after the effect starts, and then stage 2 begins,
687 // where the ships flies through the effect at a set
688 // velocity so it gets through in a certain amount of
690 void shipfx_warpin_start( object *objp )
693 float effect_time, effect_radius;
695 shipp = &Ships[objp->instance];
697 if ( shipp->flags & SF_ARRIVING ) {
698 mprintf(( "Ship is already arriving!\n" ));
702 // post a warpin event
703 if(Game_mode & GM_DEMO_RECORD){
704 demo_POST_warpin(objp->signature, shipp->flags);
707 // if there is no arrival warp, then skip the whole thing
708 if ( shipp->flags & SF_NO_ARRIVAL_WARP ) {
709 shipfx_actually_warpin(shipp,objp);
713 // VALIDATE special_warp_objnum
714 if (shipp->special_warp_objnum >= 0) {
716 int ref_objnum = shipp->special_warp_objnum;
717 int valid_reference_ship = FALSE;
719 // Validate reference_objnum
720 if ((ref_objnum >= 0) && (ref_objnum < MAX_OBJECTS)) {
721 object *sp_objp = &Objects[ref_objnum];
722 if (sp_objp->type == OBJ_SHIP) {
723 if (Ship_info[Ships[sp_objp->instance].ship_info_index].flags & SIF_KNOSSOS_DEVICE) {
724 valid_reference_ship = TRUE;
729 if (valid_reference_ship != TRUE) {
730 shipp->special_warp_objnum = -1;
734 // only move warp effect pos if not special warp in.
735 if (shipp->special_warp_objnum >= 0) {
736 SDL_assert(!(Game_mode & GM_MULTIPLAYER));
738 pm = model_get(shipp->modelnum);
739 vm_vec_scale_add(&shipp->warp_effect_pos, &objp->pos, &objp->orient.v.fvec, -pm->mins.xyz.z);
741 vm_vec_scale_add( &shipp->warp_effect_pos, &objp->pos, &objp->orient.v.fvec, objp->radius );
744 // The ending zero mean this is a warp-in effect
745 if ( !(shipp->flags & SF_INITIALLY_DOCKED) ) {
748 // Effect time is 'SHIPFX_WARP_DELAY' (1.5 secs) seconds to start, 'shipfx_calculate_warp_time'
749 // for ship to go thru, and 'SHIPFX_WARP_DELAY' (1.5 secs) to go away.
750 effect_time = shipfx_calculate_warp_time(objp) + SHIPFX_WARP_DELAY + SHIPFX_WARP_DELAY;
751 effect_radius = shipfx_calculate_effect_radius(objp);
753 // maybe special warpin
754 if (shipp->special_warp_objnum >= 0) {
755 // cap radius to size of knossos
756 effect_radius = SDL_min(effect_radius, 0.8f*Objects[shipp->special_warp_objnum].radius);
757 warp_objnum = fireball_create(&shipp->warp_effect_pos, FIREBALL_KNOSSOS_EFFECT, shipp->special_warp_objnum, effect_radius, 0, NULL, effect_time, shipp->ship_info_index);
759 warp_objnum = fireball_create(&shipp->warp_effect_pos, FIREBALL_WARP_EFFECT, OBJ_INDEX(objp), effect_radius, 0, NULL, effect_time, shipp->ship_info_index);
761 if (warp_objnum < 0 ) { // JAS: This must always be created, if not, just warp the ship in
762 shipfx_actually_warpin(shipp,objp);
766 shipp->warp_effect_fvec = Objects[warp_objnum].orient.v.fvec;
767 // maybe negate if special warp effect
768 if (shipp->special_warp_objnum >= 0) {
769 if (vm_vec_dotprod(&shipp->warp_effect_fvec, &objp->orient.v.fvec) < 0) {
770 vm_vec_negate(&shipp->warp_effect_fvec);
775 shipp->final_warp_time = timestamp(fl2i(SHIPFX_WARP_DELAY*1000.0f));
776 shipp->flags |= SF_ARRIVING_STAGE_1;
778 // see if this ship is docked with anything, and if so, make docked ship be "arriving"
780 if ( Ai_info[shipp->ai_index].dock_objnum != -1 ) {
781 Ships[Ai_info[shipp->ai_index].dock_objnum].final_warp_time = timestamp(fl2i(warp_time*1000.0f));
782 Ships[Ai_info[shipp->ai_index].dock_objnum].flags |= SF_ARRIVING_STAGE_1;
788 void shipfx_warpin_frame( object *objp, float frametime )
792 shipp = &Ships[objp->instance];
794 if ( shipp->flags & SF_DYING ) return;
796 if ( shipp->flags & SF_ARRIVING_STAGE_1 ) {
797 if ( timestamp_elapsed(shipp->final_warp_time) ) {
799 // let physics know the ship is going to warp in.
800 objp->phys_info.flags |= PF_WARP_IN;
802 // done doing stage 1 of warp, so go on to stage 2
803 shipp->flags &= (~SF_ARRIVING_STAGE_1);
804 shipp->flags |= SF_ARRIVING_STAGE_2;
806 float warp_time = shipfx_calculate_warp_time(objp);
807 float speed = shipfx_calculate_warp_speed(objp); // How long it takes to move through warp effect
809 // Make ship move at velocity so that it moves two radius's in warp_time seconds.
811 vel = objp->orient.v.fvec;
812 vm_vec_scale( &vel, speed );
813 objp->phys_info.vel = vel;
814 objp->phys_info.desired_vel = vel;
815 objp->phys_info.prev_ramp_vel.xyz.x = 0.0f;
816 objp->phys_info.prev_ramp_vel.xyz.y = 0.0f;
817 objp->phys_info.prev_ramp_vel.xyz.z = speed;
818 objp->phys_info.forward_thrust = 0.0f; // How much the forward thruster is applied. 0-1.
820 shipp->final_warp_time = timestamp(fl2i(warp_time*1000.0f));
823 // see if this ship is docked with anything, and if so, make docked ship be "arriving"
824 if ( Ai_info[shipp->ai_index].dock_objnum != -1 ) {
825 Ships[Ai_info[shipp->ai_index].dock_objnum].flags &= (~SF_ARRIVING_STAGE_1);
826 Ships[Ai_info[shipp->ai_index].dock_objnum].flags |= SF_ARRIVING_STAGE_2;
827 Ships[Ai_info[shipp->ai_index].dock_objnum].final_warp_time = timestamp(fl2i(warp_time*1000.0f));
831 } else if ( shipp->flags & SF_ARRIVING_STAGE_2 ) {
832 if ( timestamp_elapsed(shipp->final_warp_time) ) {
833 // done doing stage 2 of warp, so turn off arriving flag
834 shipfx_actually_warpin(shipp,objp);
836 // notify physics to slow down
837 if (Ship_info[shipp->ship_info_index].flags & SIF_SUPERCAP) {
838 // let physics know this is a special warp in
839 objp->phys_info.flags |= PF_SPECIAL_WARP_IN;
846 // This is called to actually warp this object out
847 // after all the flashy fx are done, or if the flashy
848 // fx don't work for some reason. OR to skip the flashy
850 void shipfx_actually_warpout( ship *shipp, object *objp )
852 // Once we get through effect, make the ship go away
854 if ( objp == Player_obj ) {
855 // Normally, this will never get called for the player. If it
856 // does, it is because some error (like the warpout effect
857 // couldn't start) so go ahead an warp the player out.
858 // All this does is set the event to go to debriefing, the
859 // same thing that happens after the player warp out effect
861 gameseq_post_event( GS_EVENT_DEBRIEF ); // proceed to debriefing
865 // Code for objects except player ship warping out
866 objp->flags |= OF_SHOULD_BE_DEAD;
867 // check to see if departing ship is docked with anything and if so, mark that object
869 docked_objp = ai_find_docked_object( objp );
871 docked_objp->flags |= OF_SHOULD_BE_DEAD;
874 ship_departed( objp->instance );
876 ship_departed( docked_objp->instance );
881 // compute_special_warpout_stuff();
882 int compute_special_warpout_stuff(object *objp, float *speed, float *warp_time, vector *warp_pos)
884 object *sp_objp = NULL;
886 int valid_refenence_ship = FALSE, ref_objnum;
887 vector facing_normal, vec_to_knossos;
890 // knossos warpout only valid in single player
891 if (Game_mode & GM_MULTIPLAYER) {
892 mprintf(("special warpout only for single player\n"));
896 // find special warp ship reference
897 valid_refenence_ship = FALSE;
898 ref_objnum = Ships[objp->instance].special_warp_objnum;
900 // Validate reference_objnum
901 if ((ref_objnum >= 0) && (ref_objnum < MAX_OBJECTS)) {
902 sp_objp = &Objects[ref_objnum];
903 if (sp_objp->type == OBJ_SHIP) {
904 shipp = &Ships[sp_objp->instance];
905 if (Ship_info[shipp->ship_info_index].flags & SIF_KNOSSOS_DEVICE) {
906 valid_refenence_ship = TRUE;
911 if (!valid_refenence_ship) {
913 mprintf(("special warpout reference ship not found\n"));
917 // get facing normal from knossos
918 vm_vec_sub(&vec_to_knossos, &sp_objp->pos, &objp->pos);
919 facing_normal = sp_objp->orient.v.fvec;
920 if (vm_vec_dotprod(&vec_to_knossos, &sp_objp->orient.v.fvec) > 0) {
921 vm_vec_negate(&facing_normal);
924 // find position to play the warp ani..
925 dist_to_plane = fvi_ray_plane(warp_pos, &sp_objp->pos, &facing_normal, &objp->pos, &objp->orient.v.fvec, 0.0f);
927 // calculate distance to warpout point.
928 polymodel *pm = model_get(Ships[objp->instance].modelnum);
929 dist_to_plane += pm->mins.xyz.z;
931 if (dist_to_plane < 0) {
932 mprintf(("warpout started too late\n"));
937 float max_warpout_angle = 0.707f; // 45 degree half-angle cone for small ships
938 if (Ship_info[Ships[objp->instance].ship_info_index].flags & (SIF_BIG_SHIP | SIF_HUGE_SHIP)) {
939 max_warpout_angle = 0.866f; // 30 degree half-angle cone for BIG or HUGE
942 if (-vm_vec_dotprod(&objp->orient.v.fvec, &facing_normal) < max_warpout_angle) { // within allowed angle
944 mprintf(("special warpout angle exceeded\n"));
948 // Calculate speed needed to get
949 *speed = shipfx_calculate_warp_speed(objp);
951 // Calculate how long to fly through the effect. Not to get to the effect, just through it.
952 *warp_time = shipfx_calculate_warp_time(objp);
953 *warp_time += dist_to_plane / *speed;
959 void compute_warpout_stuff(object *objp, float *speed, float *warp_time, vector *warp_pos)
961 // If we're warping through the knossos, do something different.
962 if (Ships[objp->instance].special_warp_objnum >= 0) {
963 if (compute_special_warpout_stuff(objp, speed, warp_time, warp_pos) != -1) {
966 mprintf(("Invalid special warp\n"));
970 object *docked_objp = ai_find_docked_object( objp );
971 vector center_pos = objp->pos;
972 float radius, ship_move_dist, warp_dist;
974 radius = objp->radius;
976 // If ship is docked then center wormhold about their center and make radius large enough.
978 vm_vec_avg(¢er_pos, &objp->pos, &docked_objp->pos);
979 radius += docked_objp->radius;
982 // Calculate how long to fly through the effect. Not to get to the effect, just through it.
983 *warp_time = shipfx_calculate_warp_time(objp);
985 // Pick some speed at which we want to go through the warp effect.
986 // This is determined by shipfx_calculate_warp_time specifying how long
987 // it should take to go through the effect, or 2R.
988 *speed = shipfx_calculate_warp_speed(objp);
990 if ( objp == Player_obj ) {
991 *speed = 0.8f*objp->phys_info.max_vel.xyz.z;
994 // Now we know our speed. Figure out how far the warp effect will be from here.
995 ship_move_dist = (*speed * SHIPFX_WARP_DELAY) + radius*1.5f; // We want to get to 1.5R away from effect
996 if ( ship_move_dist < radius*1.5f ) {
997 ship_move_dist = radius*1.5f;
1000 // If this is a huge ship, set the distance to the length of the ship
1001 if (Ship_info[Ships[objp->instance].ship_info_index].flags & SIF_HUGE_SHIP) {
1002 ship_move_dist = 0.5f * ship_get_length(&Ships[objp->instance]);
1005 // Acount for time to get to warp effect, before we actually go through it.
1006 *warp_time += ship_move_dist / *speed;
1008 warp_dist = ship_move_dist;
1009 // allow for off center
1010 if (Ship_info[Ships[objp->instance].ship_info_index].flags & SIF_HUGE_SHIP) {
1011 polymodel *pm = model_get(Ships[objp->instance].modelnum);
1012 warp_dist -= pm->mins.xyz.z;
1015 vm_vec_scale_add( warp_pos, ¢er_pos, &objp->orient.v.fvec, warp_dist );
1018 // JAS - code to start the ship doing the warp out effect
1019 // This puts the ship into a mode specified by SF_DEPARTING
1020 // where it flies forward for a set time period at a set
1021 // velocity, then disappears when that time is reached. This
1022 // also starts the animating 3d effect playing.
1023 void shipfx_warpout_start( object *objp )
1027 shipp = &Ships[objp->instance];
1029 if ( shipp->flags & SF_DEPART_WARP ) {
1030 mprintf(( "Ship is already departing!\n" ));
1034 // if we're dying return
1035 if ( shipp->flags & SF_DYING ) {
1039 // if we're HUGE, keep alive - set guardian
1040 if (Ship_info[shipp->ship_info_index].flags & SIF_HUGE_SHIP) {
1041 objp->flags |= OF_GUARDIAN;
1044 // post a warpin event
1045 if(Game_mode & GM_DEMO_RECORD){
1046 demo_POST_warpout(objp->signature, shipp->flags);
1049 // don't send ship depart packets for player ships
1050 if ( (MULTIPLAYER_MASTER) && !(objp->flags & OF_PLAYER_SHIP) ){
1051 send_ship_depart_packet( objp );
1054 // don't do departure wormhole if ship flag is set which indicates no effect
1055 if ( shipp->flags & SF_NO_DEPARTURE_WARP ) {
1056 // DKA 5/25/99 If he's going to warpout, set it.
1057 // Next line fixes assert in wing cleanup code when no warp effect.
1058 shipp->flags |= SF_DEPART_WARP;
1060 shipfx_actually_warpout(shipp, objp);
1064 if ( objp == Player_obj ) {
1065 HUD_printf(XSTR( "Subspace node activated", 498) );
1068 float speed, effect_time, effect_radius;
1070 // warp time from compute warpout stuff includes time to get up to warp_pos
1071 compute_warpout_stuff(objp, &speed, &warp_time, &warp_pos);
1072 shipp->warp_effect_pos = warp_pos;
1074 // The ending one means this is a warp-out effect
1076 // Effect time is 'SHIPFX_WARP_DELAY' (1.5 secs) seconds to start, 'shipfx_calculate_warp_time'
1077 // for ship to go thru, and 'SHIPFX_WARP_DELAY' (1.5 secs) to go away.
1078 // effect_time = shipfx_calculate_warp_time(objp) + SHIPFX_WARP_DELAY + SHIPFX_WARP_DELAY;
1079 effect_time = warp_time + SHIPFX_WARP_DELAY;
1080 effect_radius = shipfx_calculate_effect_radius(objp);
1082 // maybe special warpout
1083 if (shipp->special_warp_objnum >= 0) {
1084 // cap radius to size of knossos
1085 effect_radius = SDL_min(effect_radius, 0.8f*Objects[shipp->special_warp_objnum].radius);
1086 warp_objnum = fireball_create(&shipp->warp_effect_pos, FIREBALL_KNOSSOS_EFFECT, shipp->special_warp_objnum, effect_radius, 1, NULL, effect_time, shipp->ship_info_index);
1088 warp_objnum = fireball_create(&shipp->warp_effect_pos, FIREBALL_WARP_EFFECT, OBJ_INDEX(objp), effect_radius, 1, NULL, effect_time, shipp->ship_info_index);
1090 if (warp_objnum < 0 ) { // JAS: This must always be created, if not, just warp the ship in
1091 shipfx_actually_warpout(shipp,objp);
1095 shipp->warp_effect_fvec = Objects[warp_objnum].orient.v.fvec;
1096 // maybe negate if special warp effect
1097 if (shipp->special_warp_objnum >= 0) {
1098 if (vm_vec_dotprod(&shipp->warp_effect_fvec, &objp->orient.v.fvec) > 0) {
1099 vm_vec_negate(&shipp->warp_effect_fvec);
1103 // Make the warp effect stage 1 last SHIP_WARP_TIME1 seconds.
1104 if ( objp == Player_obj ) {
1105 warp_time = fireball_lifeleft(&Objects[warp_objnum]);
1106 shipp->final_warp_time = timestamp(fl2i(warp_time*1000.0f));
1108 shipp->final_warp_time = timestamp(fl2i(warp_time*2.0f*1000.0f));
1110 shipp->flags |= SF_DEPART_WARP;
1112 // mprintf(( "Warp time = %.4f , effect time = %.4f ms\n", warp_time*1000.0f, effect_time ));
1114 // This is a hack to make the ship go at the right speed to go from it's current position to the warp_effect_pos;
1116 // Set ship's velocity to 'speed'
1117 // This should actually be an AI that flies from the current
1118 // position through 'shipp->warp_effect_pos' in 'warp_time'
1120 if ( objp != Player_obj ) {
1122 vel = objp->orient.v.fvec;
1123 vm_vec_scale( &vel, speed );
1124 objp->phys_info.vel = vel;
1125 objp->phys_info.desired_vel = vel;
1126 objp->phys_info.prev_ramp_vel.xyz.x = 0.0f;
1127 objp->phys_info.prev_ramp_vel.xyz.y = 0.0f;
1128 objp->phys_info.prev_ramp_vel.xyz.z = speed;
1129 objp->phys_info.forward_thrust = 1.0f; // How much the forward thruster is applied. 0-1.
1131 // special case for HUGE ships
1132 if (Ship_info[shipp->ship_info_index].flags & SIF_HUGE_SHIP) {
1133 // objp->phys_info.flags |= PF_SPECIAL_WARP_OUT;
1139 void shipfx_warpout_frame( object *objp, float frametime )
1142 shipp = &Ships[objp->instance];
1144 if ( shipp->flags & SF_DYING ) return;
1147 float warp_pos; // position of warp effect in object's frame of reference
1149 vm_vec_sub( &tempv, &objp->pos, &shipp->warp_effect_pos );
1150 warp_pos = -vm_vec_dot( &tempv, &shipp->warp_effect_fvec );
1153 // Find the closest point on line from center of wormhole
1157 fvi_ray_plane(&pos,&objp->pos,&shipp->warp_effect_fvec,&shipp->warp_effect_pos, &shipp->warp_effect_fvec, 0.0f );
1158 // dist = vm_vec_dist( &pos, &objp->pos );
1160 // mprintf(( "Warp pos = %.1f, rad=%.1f, center dist = %.1f\n", warp_pos, objp->radius, dist ));
1162 if ( objp == Player_obj ) {
1163 // Code for player warpout frame
1165 if ( (Player->control_mode==PCM_WARPOUT_STAGE2) && (warp_pos > objp->radius) ) {
1166 gameseq_post_event( GS_EVENT_PLAYER_WARPOUT_DONE_STAGE2 );
1169 if ( timestamp_elapsed(shipp->final_warp_time) ) {
1171 // Something went wrong... oh well, warp him out anyway.
1172 if ( Player->control_mode != PCM_WARPOUT_STAGE3 ) {
1173 mprintf(( "Hmmm... player ship warpout time elapsed, but he wasn't in warp stage 3.\n" ));
1176 gameseq_post_event( GS_EVENT_PLAYER_WARPOUT_DONE );
1177 ship_departed( objp->instance ); // mark log entry for the player
1181 // Code for all non-player ships warpout frame
1183 int timed_out = timestamp_elapsed(shipp->final_warp_time);
1185 // mprintf(("Frame %i: Ship %s missed departue cue.\n", Framecount, shipp->ship_name ));
1186 int delta_ms = timestamp_until(shipp->final_warp_time);
1187 if (delta_ms > 1000.0f * frametime ) {
1188 nprintf(("AI", "Frame %i: Ship %s missed departue cue by %7.3f seconds.\n", Framecount, shipp->ship_name, - (float) delta_ms/1000.0f));
1192 // MWA 10/21/97 -- added shipp->flags & SF_NO_DEPARTURE_WARP part of next if statement. For ships
1193 // that don't get a wormhole effect, I wanted to drop into this code immediately.
1194 if ( (warp_pos > objp->radius) || (shipp->flags & SF_NO_DEPARTURE_WARP) || timed_out ) {
1195 shipfx_actually_warpout( shipp, objp );
1201 //==================================================
1202 // Stuff for keeping track of which ships are in
1206 // Given point p0, in object's frame of reference, find if
1207 // it can see the sun.
1208 int shipfx_point_in_shadow( vector *p0, matrix *src_orient, vector *src_pos, float radius )
1221 // Move rp0 into world coordinates
1222 vm_vec_unrotate(&rp0, p0, src_orient);
1223 vm_vec_add2(&rp0, src_pos);
1225 // get the # of global lights
1226 n_lights = light_get_global_count();
1228 for(idx=0; idx<n_lights; idx++){
1229 // get the light dir for this light
1230 light_get_global_dir(&light_dir, idx);
1233 vm_vec_scale_add( &rp1, &rp0, &light_dir, 10000.0f );
1235 for ( so = GET_FIRST(&Ship_obj_list); so != END_OF_LIST(&Ship_obj_list); so = GET_NEXT(so) ) {
1236 objp = &Objects[so->objnum];
1237 shipp = &Ships[objp->instance];
1239 mc.model_num = shipp->modelnum;
1240 mc.orient = &objp->orient;
1241 mc.pos = &objp->pos;
1244 mc.flags = MC_CHECK_MODEL;
1246 if ( model_collide(&mc) ){
1257 // Given an ship see if it is in a shadow.
1258 int shipfx_in_shadow( object * src_obj )
1272 // get the # of global lights
1273 n_lights = light_get_global_count();
1275 for(idx=0; idx<n_lights; idx++){
1276 // get the direction for this light
1277 light_get_global_dir(&light_dir, idx);
1280 for ( so = GET_FIRST(&Ship_obj_list); so != END_OF_LIST(&Ship_obj_list); so = GET_NEXT(so) ) {
1281 objp = &Objects[so->objnum];
1283 if ( src_obj != objp ) {
1284 shipp = &Ships[objp->instance];
1286 vm_vec_scale_add( &rp1, &rp0, &light_dir, objp->radius*10.0f );
1288 mc.model_num = shipp->modelnum;
1289 mc.orient = &objp->orient;
1290 mc.pos = &objp->pos;
1293 mc.flags = MC_CHECK_MODEL;
1295 // mc.flags |= MC_CHECK_SPHERELINE;
1296 // mc.radius = src_obj->radius;
1298 if ( model_collide(&mc) ) {
1309 // Given world point see if it is in a shadow.
1310 int shipfx_eye_in_shadow( vector *eye_pos, object * src_obj, int sun_n )
1322 // get the light dir
1323 if(!light_get_global_dir(&light_dir, sun_n)){
1328 for ( so = GET_FIRST(&Ship_obj_list); so != END_OF_LIST(&Ship_obj_list); so = GET_NEXT(so) ) {
1329 objp = &Objects[so->objnum];
1331 if ( src_obj != objp ) {
1332 shipp = &Ships[objp->instance];
1334 vm_vec_scale_add( &rp1, &rp0, &light_dir, objp->radius*10.0f );
1336 ship_model_start(objp);
1338 mc.model_num = shipp->modelnum;
1339 mc.orient = &objp->orient;
1340 mc.pos = &objp->pos;
1343 mc.flags = MC_CHECK_MODEL;
1345 // mc.flags |= MC_CHECK_SPHERELINE;
1346 // mc.radius = src_obj->radius;
1348 int hit = model_collide(&mc);
1350 ship_model_stop(objp);
1358 // Check all the big hull debris pieces.
1359 debris *db = Debris;
1362 for ( i = 0; i < MAX_DEBRIS_PIECES; i++, db++ ) {
1363 if ( !(db->flags & DEBRIS_USED) || !db->is_hull ){
1367 objp = &Objects[db->objnum];
1369 vm_vec_scale_add( &rp1, &rp0, &light_dir, objp->radius*10.0f );
1371 mc.model_num = db->model_num; // Fill in the model to check
1372 mc.submodel_num = db->submodel_num;
1373 model_clear_instance( mc.model_num );
1374 mc.orient = &objp->orient; // The object's orient
1375 mc.pos = &objp->pos; // The object's position
1376 mc.p0 = &rp0; // Point 1 of ray to check
1377 mc.p1 = &rp1; // Point 2 of ray to check
1378 mc.flags = (MC_CHECK_MODEL | MC_SUBMODEL);
1380 if (model_collide(&mc)) {
1389 //=====================================================================================
1390 // STUFF FOR DOING SHIP GUN FLASHES
1391 //=====================================================================================
1393 #define MAX_FLASHES 128 // How many flashes total
1394 #define FLASH_LIFE_PRIMARY 0.25f // How long flash lives
1395 #define FLASH_LIFE_SECONDARY 0.50f // How long flash lives
1398 typedef struct ship_flash {
1399 int objnum; // object number of parent ship
1400 int obj_signature; // signature of that object
1401 int light_num; // which light in the model this uses
1402 float life; // how long this should be around
1403 float max_life; // how long this has been around.
1406 int Ship_flash_inited = 0;
1407 int Ship_flash_highest = -1;
1408 ship_flash Ship_flash[MAX_FLASHES];
1410 // Resets the ship flash stuff. Call before each level.
1411 void shipfx_flash_init()
1415 for (i=0; i<MAX_FLASHES; i++ ) {
1416 Ship_flash[i].objnum = -1; // mark as unused
1418 Ship_flash_highest = -1;
1419 Ship_flash_inited = 1;
1423 // Given that a ship fired a weapon, light up the model
1425 void shipfx_flash_create(object *objp, ship * shipp, vector *gun_pos, vector *gun_dir, int is_primary, int weapon_info_index)
1428 int objnum = OBJ_INDEX(objp);
1430 SDL_assert(Ship_flash_inited);
1432 polymodel *pm = model_get( shipp->modelnum );
1433 int closest_light = -1;
1434 float d, closest_dist = 0.0f;
1436 // ALWAYS do this - since this is called once per firing
1437 // if this is a cannon type weapon, create a muzzle flash
1438 // HACK - let the flak guns do this on their own since they fire so quickly
1439 if((Weapon_info[weapon_info_index].wi_flags & WIF_MFLASH) && !(Weapon_info[weapon_info_index].wi_flags & WIF_FLAK)){
1440 // spiffy new flash stuff
1441 mflash_create(gun_pos, gun_dir, Weapon_info[weapon_info_index].muzzle_flash);
1444 if ( pm->num_lights < 1 ) return;
1446 for (i=0; i<pm->num_lights; i++ ) {
1447 d = vm_vec_dist( &pm->lights[i].pos, gun_pos );
1449 if ( pm->lights[i].type == BSP_LIGHT_TYPE_WEAPON ) {
1450 if ( (closest_light==-1) || (d<closest_dist) ) {
1457 if ( closest_light == -1 ) return;
1459 int first_slot = -1;
1461 for (i=0; i<=Ship_flash_highest; i++ ) {
1462 if ( (first_slot==-1) && (Ship_flash[i].objnum < 0) ) {
1466 if ( (Ship_flash[i].objnum == objnum) && (Ship_flash[i].obj_signature==objp->signature) ) {
1467 if ( Ship_flash[i].light_num == closest_light ) {
1468 // This is already flashing!
1469 Ship_flash[i].life = 0.0f;
1471 Ship_flash[i].max_life = FLASH_LIFE_PRIMARY;
1473 Ship_flash[i].max_life = FLASH_LIFE_SECONDARY;
1480 if ( first_slot == -1 ) {
1481 if ( Ship_flash_highest < MAX_FLASHES-1 ) {
1482 Ship_flash_highest++;
1483 first_slot = Ship_flash_highest;
1485 //mprintf(( "SHIP_FLASH: Out of flash spots!\n" ));
1486 return; // out of flash slots
1490 SDL_assert( Ship_flash[first_slot].objnum == -1 );
1492 Ship_flash[first_slot].objnum = objnum;
1493 Ship_flash[first_slot].obj_signature = objp->signature;
1494 Ship_flash[first_slot].life = 0.0f; // Start it up
1496 Ship_flash[first_slot].max_life = FLASH_LIFE_PRIMARY;
1498 Ship_flash[first_slot].max_life = FLASH_LIFE_SECONDARY;
1500 Ship_flash[first_slot].light_num = closest_light;
1503 // Sets the flash lights in the model used by this
1504 // ship to the appropriate values. There might not
1505 // be any flashes linked to this ship in which
1506 // case this function does nothing.
1507 void shipfx_flash_light_model( object *objp, ship * shipp )
1509 int i, objnum = OBJ_INDEX(objp);
1510 polymodel *pm = model_get( shipp->modelnum );
1512 for (i=0; i<=Ship_flash_highest; i++ ) {
1513 if ( (Ship_flash[i].objnum == objnum) && (Ship_flash[i].obj_signature==objp->signature) ) {
1514 float v = (Ship_flash[i].max_life - Ship_flash[i].life)/Ship_flash[i].max_life;
1516 pm->lights[Ship_flash[i].light_num].value += v / 255.0f;
1522 // Does whatever processing needs to be done each frame.
1523 void shipfx_flash_do_frame(float frametime)
1529 for (i=0, sf = &Ship_flash[0]; i<=Ship_flash_highest; i++, sf++ ) {
1530 if ( sf->objnum > -1 ) {
1531 if ( Objects[sf->objnum].signature != sf->obj_signature ) {
1534 sf->life += frametime;
1535 if ( sf->life >= sf->max_life ) kill_it = 1;
1539 if ( i == Ship_flash_highest ) {
1540 while( (Ship_flash_highest>0) && (Ship_flash[Ship_flash_highest].objnum == -1) ) {
1541 Ship_flash_highest--;
1550 float Particle_width = 1.2f;
1551 DCF(particle_width, "Multiplier for angular width of the particle spew")
1554 dc_get_arg(ARG_FLOAT);
1555 if ( (Dc_arg_float >= 0 ) && (Dc_arg_float <= 5) ) {
1556 Particle_width = Dc_arg_float;
1558 dc_printf( "Illegal value for particle width. (Must be from 0-5) \n\n");
1563 float Particle_number = 1.2f;
1564 DCF(particle_num, "Multiplier for the number of particles created")
1567 dc_get_arg(ARG_FLOAT);
1568 if ( (Dc_arg_float >= 0 ) && (Dc_arg_float <= 5) ) {
1569 Particle_number = Dc_arg_float;
1571 dc_printf( "Illegal value for particle num. (Must be from 0-5) \n\n");
1576 float Particle_life = 1.2f;
1577 DCF(particle_life, "Multiplier for the lifetime of particles created")
1580 dc_get_arg(ARG_FLOAT);
1581 if ( (Dc_arg_float >= 0 ) && (Dc_arg_float <= 5) ) {
1582 Particle_life = Dc_arg_float;
1584 dc_printf( "Illegal value for particle life. (Must be from 0-5) \n\n");
1589 // Make sparks fly off of ship n.
1590 // sn = spark number to spark, corrosponding to element in
1591 // ship->hitpos array. If this isn't -1, it is a just
1592 // got hit by weapon spark, otherwise pick one randomally.
1593 void shipfx_emit_spark( int n, int sn )
1595 int create_spark = 1;
1598 ship *shipp = &Ships[n];
1599 float ship_radius, spark_scale_factor;
1601 if ( shipp->num_hits <= 0 )
1604 // get radius of ship
1605 ship_radius = model_get_radius(Ship_info[shipp->ship_info_index].modelnum);
1607 // get spark_scale_factor -- how much to increase ship sparks, based on radius
1608 if (ship_radius > 40) {
1609 spark_scale_factor = 1.0f;
1610 } else if (ship_radius > 20) {
1611 spark_scale_factor = (ship_radius - 20.0f) / 20.0f;
1613 spark_scale_factor = 0.0f;
1616 float spark_time_scale = 1.0f + spark_scale_factor * (Particle_life - 1.0f);
1617 float spark_width_scale = 1.0f + spark_scale_factor * (Particle_width - 1.0f);
1618 float spark_num_scale = 1.0f + spark_scale_factor * (Particle_number - 1.0f);
1620 obj = &Objects[shipp->objnum];
1621 ship_info* si = &Ship_info[shipp->ship_info_index];
1623 float hull_percent = obj->hull_strength / si->initial_hull_strength;
1624 if (hull_percent < 0.001) {
1625 hull_percent = 0.001f;
1629 float fraction = 0.1f * obj->radius / hull_percent;
1630 if (fraction > 1.0f) {
1637 spark_num = myrand() % shipp->num_hits;
1642 // don't display sparks that have expired
1643 if ( timestamp_elapsed(shipp->sparks[spark_num].end_time) ) {
1647 // get spark position
1648 if (shipp->sparks[spark_num].submodel_num != -1) {
1649 ship_model_start(obj);
1650 model_find_world_point(&outpnt, &shipp->sparks[spark_num].pos, shipp->modelnum, shipp->sparks[spark_num].submodel_num, &obj->orient, &obj->pos);
1651 ship_model_stop(obj);
1653 // rotate sparks correctly with current ship orient
1654 vm_vec_unrotate(&outpnt, &shipp->sparks[spark_num].pos, &obj->orient);
1655 vm_vec_add2(&outpnt,&obj->pos);
1658 if ( shipp->flags & (SF_ARRIVING|SF_DEPART_WARP) ) {
1660 vm_vec_sub( &tmp, &outpnt, &shipp->warp_effect_pos );
1661 if ( vm_vec_dot( &tmp, &shipp->warp_effect_fvec ) < 0.0f ) {
1662 // if in front of warp plane, don't create.
1667 if ( create_spark ) {
1669 particle_emitter pe;
1671 pe.pos = outpnt; // Where the particles emit from
1673 if ( shipp->flags & (SF_ARRIVING|SF_DEPART_WARP) ) {
1674 // No velocity if going through warp.
1675 pe.vel = vmd_zero_vector;
1677 // Initial velocity of all the particles.
1678 // 0.0f = 0% of parent's.
1679 // 1.0f = 100% of parent's.
1680 vm_vec_copy_scale( &pe.vel, &obj->phys_info.vel, 0.7f );
1683 // TODO: add velocity from rotation if submodel is rotating
1686 // r = outpnt - model_find_world_point(0)
1688 // w = model_find_world_dir(
1689 // model_find_world_dir(&out_dir, &in_dir, model_num, submodel_num, &objorient, &objpos);
1691 vector tmp_norm, tmp_vel;
1692 vm_vec_sub( &tmp_norm, &outpnt, &obj->pos );
1693 vm_vec_normalize_safe(&tmp_norm);
1695 tmp_vel = obj->phys_info.vel;
1696 if ( vm_vec_normalize_safe(&tmp_vel) > 1.0f ) {
1697 vm_vec_scale_add2(&tmp_norm,&tmp_vel, -2.0f);
1698 vm_vec_normalize_safe(&tmp_norm);
1701 pe.normal = tmp_norm; // What normal the particle emit around
1702 pe.normal_variance = 0.3f; // How close they stick to that normal 0=good, 1=360 degree
1703 pe.min_rad = 0.20f; // Min radius
1704 pe.max_rad = 0.50f; // Max radius
1706 // first time through - set up end time and make heavier initially
1708 // Sparks for first time at this spot
1709 if (si->flags & SIF_FIGHTER) {
1710 if (hull_percent > 0.6f) {
1711 // sparks only once when hull > 60%
1712 float spark_duration = (float)pow(2.0f, -5.0f*(hull_percent-1.3f)) * (1.0f + 0.6f*(frand()-0.5f)); // +- 30%
1713 shipp->sparks[spark_num].end_time = timestamp( (int) (1000.0f * spark_duration) );
1715 // spark never ends when hull < 60% (~277 hr)
1716 shipp->sparks[spark_num].end_time = timestamp( 100000000 );
1720 pe.num_low = 25; // Lowest number of particles to create (hardware)
1721 pe.num_high = 30; // Highest number of particles to create (hardware)
1722 pe.normal_variance = 1.0f; // How close they stick to that normal 0=good, 1=360 degree
1723 pe.min_vel = 2.0f; // How fast the slowest particle can move
1724 pe.max_vel = 12.0f; // How fast the fastest particle can move
1725 pe.min_life = 0.05f; // How long the particles live
1726 pe.max_life = 0.55f; // How long the particles live
1728 particle_emit( &pe, PARTICLE_FIRE, 0 );
1731 pe.min_rad = 0.7f; // Min radius
1732 pe.max_rad = 1.3f; // Max radius
1733 pe.num_low = int (20 * spark_num_scale); // Lowest number of particles to create (hardware)
1734 pe.num_high = int (50 * spark_num_scale); // Highest number of particles to create (hardware)
1735 pe.normal_variance = 0.2f * spark_width_scale; // How close they stick to that normal 0=good, 1=360 degree
1736 pe.min_vel = 3.0f; // How fast the slowest particle can move
1737 pe.max_vel = 12.0f; // How fast the fastest particle can move
1738 pe.min_life = 0.35f*2.0f * spark_time_scale; // How long the particles live
1739 pe.max_life = 0.75f*2.0f * spark_time_scale; // How long the particles live
1741 particle_emit( &pe, PARTICLE_SMOKE, 0 );
1745 // Select time to do next spark
1746 // Ships[n].next_hit_spark = timestamp_rand(100,500);
1747 shipp->next_hit_spark = timestamp_rand(50,100);
1752 //=====================================================================================
1753 // STUFF FOR DOING LARGE SHIP EXPLOSIONS
1754 //=====================================================================================
1756 int Bs_exp_fire_low = 1;
1757 float Bs_exp_fire_time_mult = 1.0f;
1759 DCF_BOOL(bs_exp_fire_low, Bs_exp_fire_low)
1760 DCF(bs_exp_fire_time_mult, "Multiplier time between fireball in big ship explosion")
1763 dc_get_arg(ARG_FLOAT);
1764 if ( (Dc_arg_float >= 0.1 ) && (Dc_arg_float <= 5) ) {
1765 Bs_exp_fire_time_mult = Dc_arg_float;
1767 dc_printf( "Illegal value for bs_exp_fire_time_mult. (Must be from 0.1-5) \n\n");
1772 #define MAX_SPLIT_SHIPS 3 // How many can explode at once. Each one is about 1K.
1774 #define DEBRIS_NONE 0
1775 #define DEBRIS_DRAW 1
1776 #define DEBRIS_FREE 2
1778 typedef struct clip_ship {
1780 float length_left; // uncomsumed length
1782 physics_info phys_info;
1783 vector local_pivot; // world center of mass position of half ship
1784 vector model_center_disp_to_orig_center; // displacement from half ship center to original model center
1785 vector clip_plane_norm; // clip plane normal (local [0,0,1] or [0,0,-1])
1786 float cur_clip_plane_pt; // displacement from half ship clip plane to original model center
1787 float explosion_vel;
1788 ubyte draw_debris[MAX_DEBRIS_OBJECTS];
1792 typedef struct split_ship {
1793 int used; // 0 if not used, 1 if used
1794 clip_ship front_ship;
1795 clip_ship back_ship;
1796 int explosion_flash_timestamp;
1797 int explosion_flash_started;
1798 int sound_handle[NUM_SUB_EXPL_HANDLES];
1802 static split_ship Split_ships[MAX_SPLIT_SHIPS];
1803 static int Split_ships_inited = 0;
1805 static void split_ship_init_system()
1808 for (i=0; i<MAX_SPLIT_SHIPS; i++ ) {
1809 Split_ships[i].used = 0;
1811 Split_ships_inited = 1;
1814 static void maybe_fireball_wipe(clip_ship* half_ship, int* sound_handle);
1815 static void split_ship_init( ship* shipp, split_ship* split_ship )
1817 object* parent_ship_obj = &Objects[shipp->objnum];
1818 matrix* orient = &parent_ship_obj->orient;
1819 for (int ii=0; ii<NUM_SUB_EXPL_HANDLES; ii++) {
1820 split_ship->sound_handle[ii] = shipp->sub_expl_sound_handle[ii];
1823 // play 3d sound for shockwave explosion
1824 snd_play_3d( &Snds[SND_SHOCKWAVE_EXPLODE], &parent_ship_obj->pos, &View_position, 0.0f, NULL, 0, 1.0f, SND_PRIORITY_SINGLE_INSTANCE, NULL, 3.0f );
1826 // initialize both ships
1827 split_ship->front_ship.parent_obj = parent_ship_obj;
1828 split_ship->back_ship.parent_obj = parent_ship_obj;
1829 split_ship->explosion_flash_timestamp = timestamp((int)(0.00075f*parent_ship_obj->radius));
1830 split_ship->explosion_flash_started = 0;
1831 split_ship->front_ship.orient = *orient;
1832 split_ship->back_ship.orient = *orient;
1833 split_ship->front_ship.next_fireball = timestamp_rand(0, 100);
1834 split_ship->back_ship.next_fireball = timestamp_rand(0, 100);
1836 split_ship->front_ship.clip_plane_norm = vmd_z_vector;
1837 vm_vec_copy_scale(&split_ship->back_ship.clip_plane_norm, &vmd_z_vector, -1.0f);
1839 // find the point at which the ship splits (relative to its pivot)
1840 polymodel* pm = model_get(shipp->modelnum);
1841 float init_clip_plane_dist;
1842 if (pm->num_split_plane > 0) {
1843 int index = rand()%pm->num_split_plane;
1844 init_clip_plane_dist = pm->split_plane[index];
1846 init_clip_plane_dist = 0.5f * (0.5f - frand())*pm->core_radius;
1849 split_ship->back_ship.cur_clip_plane_pt = init_clip_plane_dist;
1850 split_ship->front_ship.cur_clip_plane_pt = init_clip_plane_dist;
1853 dist = (split_ship->front_ship.cur_clip_plane_pt+pm->maxs.xyz.z)/2.0f;
1854 vm_vec_copy_scale(&split_ship->front_ship.local_pivot, &orient->v.fvec, dist);
1855 (void) vm_vec_make(&split_ship->front_ship.model_center_disp_to_orig_center, 0.0f, 0.0f, -dist);
1856 dist = (split_ship->back_ship.cur_clip_plane_pt +pm->mins.xyz.z)/2.0f;
1857 vm_vec_copy_scale(&split_ship->back_ship.local_pivot, &orient->v.fvec, dist);
1858 (void) vm_vec_make(&split_ship->back_ship.model_center_disp_to_orig_center, 0.0f, 0.0f, -dist);
1859 vm_vec_add2(&split_ship->front_ship.local_pivot, &parent_ship_obj->pos );
1860 vm_vec_add2(&split_ship->back_ship.local_pivot, &parent_ship_obj->pos );
1862 // find which debris pieces are in the front and back split ships
1863 for (int i=0; i<pm->num_debris_objects; i++ ) {
1864 vector temp_pos = ZERO_VECTOR;
1865 vector tmp = ZERO_VECTOR;
1866 vector tmp1 = pm->submodel[pm->debris_objects[i]].offset;
1867 // tmp is world position, temp_pos is world_pivot, tmp1 is offset from world_pivot (in ship local coord)
1868 model_find_world_point(&tmp, &tmp1, shipp->modelnum, -1, &vmd_identity_matrix, &temp_pos );
1869 if (tmp.xyz.z > init_clip_plane_dist) {
1870 split_ship->front_ship.draw_debris[i] = DEBRIS_DRAW;
1871 split_ship->back_ship.draw_debris[i] = DEBRIS_NONE;
1873 split_ship->front_ship.draw_debris[i] = DEBRIS_NONE;
1874 split_ship->back_ship.draw_debris[i] = DEBRIS_DRAW;
1879 // set the remaining debris slots to not draw
1880 for (i=pm->num_debris_objects; i<MAX_DEBRIS_OBJECTS; i++) {
1881 split_ship->front_ship.draw_debris[i] = DEBRIS_NONE;
1882 split_ship->back_ship.draw_debris[i] = DEBRIS_NONE;
1886 physics_init( &split_ship->front_ship.phys_info );
1887 physics_init( &split_ship->back_ship.phys_info );
1888 split_ship->front_ship.phys_info.flags |= (PF_ACCELERATES | PF_DEAD_DAMP);
1889 split_ship->back_ship.phys_info.flags |= (PF_ACCELERATES | PF_DEAD_DAMP);
1890 split_ship->front_ship.phys_info.side_slip_time_const = 10000.0f;
1891 split_ship->back_ship.phys_info.side_slip_time_const = 10000.0f;
1892 split_ship->front_ship.phys_info.rotdamp = 10000.0f;
1893 split_ship->back_ship.phys_info.rotdamp = 10000.0f;
1895 // set up explosion vel and relative velocities (assuming mass depends on length)
1896 float front_length = pm->maxs.xyz.z - split_ship->front_ship.cur_clip_plane_pt;
1897 float back_length = split_ship->back_ship.cur_clip_plane_pt - pm->mins.xyz.z;
1898 float ship_length = front_length + back_length;
1899 split_ship->front_ship.length_left = front_length;
1900 split_ship->back_ship.length_left = back_length;
1902 float expl_length_scale = (ship_length - 200.0f) / 2000.0f;
1903 // s_r_f effects speed of "wipe" and rotvel
1904 float speed_reduction_factor = (1.0f + 0.001f*parent_ship_obj->radius);
1905 float explosion_time = (3.0f + expl_length_scale + (frand()-0.5f)) * speed_reduction_factor;
1906 float long_length = SDL_max(front_length, back_length);
1907 float expl_vel = long_length / explosion_time;
1908 split_ship->front_ship.explosion_vel = expl_vel;
1909 split_ship->back_ship.explosion_vel = -expl_vel;
1911 float rel_vel = (0.6f + 0.2f*frand()) * expl_vel * speed_reduction_factor;
1912 float front_vel = rel_vel * back_length / ship_length;
1913 float back_vel = -rel_vel * front_length / ship_length;
1914 // mprintf(("rel_vel %.1f, expl_vel %.1f\n", rel_vel, expl_vel));
1916 // set up rotational vel
1918 vm_vec_rand_vec_quick(&rotvel);
1919 rotvel.xyz.z = 0.0f;
1920 vm_vec_normalize(&rotvel);
1921 vm_vec_scale(&rotvel, 0.15f / speed_reduction_factor);
1922 split_ship->front_ship.phys_info.rotvel = rotvel;
1923 vm_vec_copy_scale(&split_ship->back_ship.phys_info.rotvel, &rotvel, -(front_length*front_length)/(back_length*back_length));
1924 split_ship->front_ship.phys_info.rotvel.xyz.z = parent_ship_obj->phys_info.rotvel.xyz.z;
1925 split_ship->back_ship.phys_info.rotvel.xyz.z = parent_ship_obj->phys_info.rotvel.xyz.z;
1928 // modify vel of each split ship based on rotvel of parent ship obj
1929 vector temp_rotvel = parent_ship_obj->phys_info.rotvel;
1930 temp_rotvel.xyz.z = 0.0f;
1931 vector vel_from_rotvel;
1932 vm_vec_crossprod(&vel_from_rotvel, &temp_rotvel, &split_ship->front_ship.local_pivot);
1933 // vm_vec_scale_add2(&split_ship->front_ship.phys_info.vel, &vel_from_rotvel, 0.5f);
1934 vm_vec_crossprod(&vel_from_rotvel, &temp_rotvel, &split_ship->back_ship.local_pivot);
1935 // vm_vec_scale_add2(&split_ship->back_ship.phys_info.vel, &vel_from_rotvel, 0.5f);
1937 // set up velocity and make initial fireballs and particles
1938 split_ship->front_ship.phys_info.vel = parent_ship_obj->phys_info.vel;
1939 split_ship->back_ship.phys_info.vel = parent_ship_obj->phys_info.vel;
1940 maybe_fireball_wipe(&split_ship->front_ship, (int*)&split_ship->sound_handle);
1941 maybe_fireball_wipe(&split_ship->back_ship, (int*)&split_ship->sound_handle);
1942 vm_vec_scale_add2(&split_ship->front_ship.phys_info.vel, &orient->v.fvec, front_vel);
1943 vm_vec_scale_add2(&split_ship->back_ship.phys_info.vel, &orient->v.fvec, back_vel);
1945 // HANDLE LIVE DEBRIS - blow off if not already gone
1946 shipfx_maybe_create_live_debris_at_ship_death( parent_ship_obj );
1950 static void half_ship_render_ship_and_debris(clip_ship* half_ship,ship *shipp)
1952 SDL_assert( Split_ships_inited );
1954 polymodel *pm = model_get(shipp->modelnum);
1956 // get rotated clip plane normal and world coord of original ship center
1957 vector orig_ship_world_center, clip_plane_norm, model_clip_plane_pt, debris_clip_plane_pt;
1958 vm_vec_unrotate(&clip_plane_norm, &half_ship->clip_plane_norm, &half_ship->orient);
1959 vm_vec_unrotate(&orig_ship_world_center, &half_ship->model_center_disp_to_orig_center, &half_ship->orient);
1960 vm_vec_add2(&orig_ship_world_center, &half_ship->local_pivot);
1962 // *out_pivot = orig_ship_world_center;
1964 // get debris clip plane pt and draw debris
1965 vm_vec_unrotate(&debris_clip_plane_pt, &half_ship->model_center_disp_to_orig_center, &half_ship->orient);
1966 vm_vec_add2(&debris_clip_plane_pt, &half_ship->local_pivot);
1967 g3_start_user_clip_plane( &debris_clip_plane_pt, &clip_plane_norm);
1969 // set up render flags
1970 uint render_flags = MR_NORMAL;
1972 for (int i=0; i<pm->num_debris_objects; i++ ) {
1973 // draw DEBRIS_FREE in test only
1974 if (half_ship->draw_debris[i] == DEBRIS_DRAW) {
1975 vector temp_pos = orig_ship_world_center;
1976 vector tmp = ZERO_VECTOR;
1977 vector tmp1 = pm->submodel[pm->debris_objects[i]].offset;
1979 // determine if explosion front has past debris piece
1980 // 67 ~ dist expl moves in 2 frames -- maybe fraction works better
1981 int is_live_debris = pm->submodel[pm->debris_objects[i]].is_live_debris;
1982 int create_debris = 0;
1984 if (half_ship->explosion_vel > 0) {
1985 if (half_ship->cur_clip_plane_pt > tmp1.xyz.z + pm->submodel[pm->debris_objects[i]].max.xyz.z - 0.1f*half_ship->explosion_vel) {
1988 // is the debris visible
1989 // if (half_ship->cur_clip_plane_pt > tmp1.xyz.z + pm->submodel[pm->debris_objects[i]].min.xyz.z - 0.5f*half_ship->explosion_vel) {
1990 // render_debris = 1;
1994 if (half_ship->cur_clip_plane_pt < tmp1.xyz.z + pm->submodel[pm->debris_objects[i]].min.xyz.z - 0.1f*half_ship->explosion_vel) {
1997 // is the debris visible
1998 // if (half_ship->cur_clip_plane_pt < tmp1.xyz.z + pm->submodel[pm->debris_objects[i]].max.xyz.z - 0.5f*half_ship->explosion_vel) {
1999 // render_debris = 1;
2003 // Draw debris, but not live debris
2004 if ( !is_live_debris ) {
2005 model_find_world_point(&tmp, &tmp1, shipp->modelnum, -1, &half_ship->orient, &temp_pos);
2006 submodel_render(shipp->modelnum, pm->debris_objects[i], &half_ship->orient, &tmp, render_flags);
2009 // make free piece of debris
2010 if ( create_debris ) {
2011 half_ship->draw_debris[i] = DEBRIS_FREE; // mark debris to not render with model
2012 vector center_to_debris, debris_vel, radial_vel;
2013 // check if last debris piece, ie, debris_count == 0
2014 int debris_count = 0;
2015 for (int j=0; j<pm->num_debris_objects; j++ ) {
2016 if (half_ship->draw_debris[j] == DEBRIS_DRAW) {
2020 // do debris create here, but not for live debris
2021 // debris vel (1) split ship vel (2) split ship rotvel (3) random
2022 if ( !is_live_debris ) {
2024 debris_obj = debris_create(half_ship->parent_obj, shipp->modelnum, pm->debris_objects[i], &tmp, &half_ship->local_pivot, 1, 1.0f);
2025 // AL: make sure debris_obj isn't NULL!
2027 vm_vec_scale(&debris_obj->phys_info.rotvel, 4.0f);
2028 debris_obj->orient = half_ship->orient;
2029 // if (debris_count > 0) {
2030 //mprintf(( "base rotvel %.1f, debris rotvel mag %.2f\n", vm_vec_mag(&half_ship->phys_info.rotvel), vm_vec_mag(&debris_obj->phys_info.rotvel) ));
2031 vm_vec_sub(¢er_to_debris, &tmp, &half_ship->local_pivot);
2032 vm_vec_crossprod(&debris_vel, ¢er_to_debris, &half_ship->phys_info.rotvel);
2033 vm_vec_add2(&debris_vel, &half_ship->phys_info.vel);
2034 vm_vec_copy_normalize(&radial_vel, ¢er_to_debris);
2035 float radial_mag = 10.0f + 30.0f*frand();
2036 vm_vec_scale_add2(&debris_vel, &radial_vel, radial_mag);
2037 debris_obj->phys_info.vel = debris_vel;
2039 debris_obj->phys_info.vel = half_ship->phys_info.vel;
2040 debris_obj->phys_info.rotvel = half_ship->phys_info.rotvel;
2048 // get model clip plane pt and draw model
2050 (void) vm_vec_make(&temp, 0.0f, 0.0f, half_ship->cur_clip_plane_pt);
2051 vm_vec_unrotate(&model_clip_plane_pt, &temp, &half_ship->orient);
2052 vm_vec_add2(&model_clip_plane_pt, &orig_ship_world_center);
2053 g3_start_user_clip_plane( &model_clip_plane_pt, &clip_plane_norm );
2054 model_render(shipp->modelnum, &half_ship->orient, &orig_ship_world_center, render_flags);
2057 void shipfx_large_blowup_level_init()
2059 split_ship_init_system();
2061 if(Ship_cannon_bitmap != -1){
2062 bm_unload(Ship_cannon_bitmap);
2063 Ship_cannon_bitmap = bm_load(SHIP_CANNON_BITMAP);
2067 // Returns 0 if couldn't init
2068 int shipfx_large_blowup_init(ship *shipp)
2071 if ( !Split_ships_inited ) {
2072 split_ship_init_system();
2076 for (i=0; i<MAX_SPLIT_SHIPS; i++ ) {
2077 if ( Split_ships[i].used == 0 ) {
2082 if ( i >= MAX_SPLIT_SHIPS ) {
2083 mprintf(( "Not enough split ship slots!! See John!\n" ));
2088 Split_ships[i].used = 1;
2089 shipp->large_ship_blowup_index = i;
2091 split_ship_init(shipp, &Split_ships[i] );
2096 // ----------------------------------------------------------------------------
2097 // uses list of model z values with constant increment to find the radius of the
2098 // cross section at the current model z value
2099 float get_model_cross_section_at_z(float z, polymodel* pm)
2101 if (pm->num_xc < 2) {
2105 float index, increment;
2106 increment = (pm->xc[pm->num_xc-1].z - pm->xc[0].z) / (float)(pm->num_xc - 1);
2107 index = (z - pm->xc[0].z) / increment;
2110 return pm->xc[0].radius;
2111 } else if (index > (pm->num_xc - 1.0f - 0.5f)) {
2112 return pm->xc[pm->num_xc-1].radius;
2114 int floor_index = (int)floor(index);
2115 int ceil_index = (int)ceil(index);
2116 return SDL_max(pm->xc[ceil_index].radius, pm->xc[floor_index].radius);
2120 // returns how long sound has been playing
2121 int get_sound_time_played(int snd_id, int handle)
2127 int bits_per_sample, frequency;
2128 snd_get_format(snd_id, &bits_per_sample, &frequency);
2129 int time_left = snd_time_remaining(handle, bits_per_sample, frequency);
2130 int duration = snd_get_duration(snd_id);
2132 return (duration - time_left);
2135 // sound manager for big ship sub explosions sounds.
2136 // forces playing of sub-explosion sounds. keeps track of active sounds, plays them for >= 750 ms
2137 // when sound has played >= 750, sound is stopped and new instance is started
2138 void do_sub_expl_sound(float radius, vector* sound_pos, int* sound_handle)
2140 int sound_index, handle;
2141 // multiplier for range (near and far distances) to apply attenuation
2142 float sound_range = 1.0f + 0.0043f*radius;
2144 int handle_index = rand()%NUM_SUB_EXPL_HANDLES;
2145 //mprintf(("handle_index %d\n", *handle_index));
2147 // sound_index = get_sub_explosion_sound_index(handle_index);
2148 sound_index = SND_SHIP_EXPLODE_1;
2149 handle = sound_handle[handle_index];
2152 // mprintf(("dist to sound %.1f snd_indx: %d, h1: %d, h2: %d\n", vm_vec_dist(&Player_obj->pos, sound_pos), next_sound_index, sound_handle[0], sound_handle[1]));
2155 // if no handle, get one
2156 sound_handle[handle_index] = snd_play_3d( &Snds[sound_index], sound_pos, &View_position, 0.0f, NULL, 0, 0.6f, SND_PRIORITY_MUST_PLAY, NULL, sound_range );
2157 } else if (!snd_is_playing(handle)) {
2158 // if sound not playing and old, get new one
2159 // I don't think will happen with SND_PRIORITY_MUST_PLAY
2160 if (get_sound_time_played(Snds[sound_index].id, handle) > 400) {
2161 //mprintf(("sound not playing %d, time_played %d, stopped\n", handle, get_sound_time_played(Snds[sound_index].id, handle)));
2162 snd_stop(sound_handle[handle_index]);
2163 sound_handle[handle_index] = snd_play_3d( &Snds[sound_index], sound_pos, &View_position, 0.0f, NULL, 0, 0.6f, SND_PRIORITY_MUST_PLAY, NULL, sound_range );
2165 } else if (get_sound_time_played(Snds[sound_index].id, handle) > 750) {
2166 //mprintf(("time %f, cur sound %d time_played %d num sounds %d\n", f2fl(Missiontime), handle_index, get_sound_time_played(Snds[sound_index].id, handle), snd_num_playing() ));
2167 sound_handle[handle_index] = snd_play_3d( &Snds[sound_index], sound_pos, &View_position, 0.0f, NULL, 0, 0.6f, SND_PRIORITY_MUST_PLAY, NULL, sound_range );
2171 // maybe create a fireball along model clip plane
2172 // also maybe plays explosion sound
2173 static void maybe_fireball_wipe(clip_ship* half_ship, int* sound_handle)
2175 // maybe make fireball to cover wipe.
2176 if ( timestamp_elapsed(half_ship->next_fireball) ) {
2177 if ( half_ship->length_left > 0.2f*fl_abs(half_ship->explosion_vel) ) {
2179 polymodel* pm = model_get(Ships[half_ship->parent_obj->instance].modelnum);
2181 vector model_clip_plane_pt, orig_ship_world_center, temp;
2183 vm_vec_unrotate(&orig_ship_world_center, &half_ship->model_center_disp_to_orig_center, &half_ship->orient);
2184 vm_vec_add2(&orig_ship_world_center, &half_ship->local_pivot);
2186 (void) vm_vec_make(&temp, 0.0f, 0.0f, half_ship->cur_clip_plane_pt);
2187 vm_vec_unrotate(&model_clip_plane_pt, &temp, &half_ship->orient);
2188 vm_vec_add2(&model_clip_plane_pt, &orig_ship_world_center);
2189 vm_vec_rand_vec_quick(&temp);
2190 vm_vec_scale(&temp, 0.1f*frand());
2191 vm_vec_add2(&model_clip_plane_pt, &temp);
2193 float rad = get_model_cross_section_at_z(half_ship->cur_clip_plane_pt, pm);
2195 rad = half_ship->parent_obj->radius * frand_range(0.4f, 0.6f);
2197 // make fireball radius (1.5 +/- .1) * model_cross_section value
2198 rad *= frand_range(1.4f, 1.6f);
2202 rad = SDL_min(rad, half_ship->parent_obj->radius);
2204 // mprintf(("xc %.1f model %.1f\n", rad, half_ship->parent_obj->radius*0.25));
2205 int fireball_type = FIREBALL_EXPLOSION_LARGE1 + rand()%FIREBALL_NUM_LARGE_EXPLOSIONS;
2206 int low_res_fireballs = Bs_exp_fire_low;
2207 fireball_create(&model_clip_plane_pt, fireball_type, OBJ_INDEX(half_ship->parent_obj), rad, 0, &half_ship->parent_obj->phys_info.vel, 0.0f, -1, NULL, low_res_fireballs);
2209 // start the next fireball up (3-4 per frame) + 30%
2210 int time_low, time_high;
2211 time_low = int(650 * Bs_exp_fire_time_mult);
2212 time_high = int(900 * Bs_exp_fire_time_mult);
2213 half_ship->next_fireball = timestamp_rand(time_low, time_high);
2216 do_sub_expl_sound(half_ship->parent_obj->radius, &model_clip_plane_pt, sound_handle);
2219 particle_emitter pe;
2221 pe.num_low = 40; // Lowest number of particles to create
2222 pe.num_high = 80; // Highest number of particles to create
2223 pe.pos = model_clip_plane_pt; // Where the particles emit from
2224 pe.vel = half_ship->phys_info.vel; // Initial velocity of all the particles
2226 #if defined(FS2_DEMO) || defined(FS1_DEMO)
2227 float range = 1.0f + 0.002f*half_ship->parent_obj->radius * 5.0f;
2229 float range = 1.0f + 0.002f*half_ship->parent_obj->radius;
2232 #if defined(FS2_DEMO) || defined(FS1_DEMO)
2233 pe.min_life = 2.0f*range; // How long the particles live
2234 pe.max_life = 10.0f*range; // How long the particles live
2236 pe.min_life = 0.5f*range; // How long the particles live
2237 pe.max_life = 6.0f*range; // How long the particles live
2239 pe.normal = vmd_x_vector; // What normal the particle emit around
2240 pe.normal_variance = 2.0f; // How close they stick to that normal 0=on normal, 1=180, 2=360 degree
2241 pe.min_vel = 0.0f; // How fast the slowest particle can move
2242 pe.max_vel = half_ship->explosion_vel; // How fast the fastest particle can move
2244 #if defined(FS2_DEMO) || defined(FS1_DEMO)
2245 float scale = half_ship->parent_obj->radius * 0.02f;
2247 float scale = half_ship->parent_obj->radius * 0.01f;
2249 pe.min_rad = 0.5f*scale; // Min radius
2250 pe.max_rad = 1.5f*scale; // Max radius
2252 particle_emit( &pe, PARTICLE_SMOKE2, 0, range );
2256 half_ship->next_fireball = timestamp(-1);
2262 // Returns 1 when explosion is done
2263 int shipfx_large_blowup_do_frame(ship *shipp, float frametime)
2265 // DAVE: I made this not do any movement just to try to get things working...
2268 SDL_assert( Split_ships_inited );
2269 SDL_assert( shipp->large_ship_blowup_index > -1 );
2271 split_ship *the_split_ship = &Split_ships[shipp->large_ship_blowup_index];
2272 SDL_assert( the_split_ship->used ); // Get John
2274 // Do fireballs, particles, shockwave here
2275 // Note parent ship is still valid, vel and pos updated in obj_move_all
2277 if ( timestamp_elapsed(the_split_ship->explosion_flash_timestamp) ) {
2278 if ( !the_split_ship->explosion_flash_started ) {
2279 object* objp = &Objects[shipp->objnum];
2280 if (objp->flags & OF_WAS_RENDERED) {
2281 float excess_dist = vm_vec_dist(&Player_obj->pos, &objp->pos) - 2.0f*objp->radius - Player_obj->radius;
2282 float intensity = 1.0f - 0.1f*excess_dist / objp->radius;
2284 if (intensity > 1) {
2288 if (intensity > 0.1f) {
2289 // big_explosion_flash(intensity);
2292 the_split_ship->explosion_flash_started = 1;
2296 physics_sim(&the_split_ship->front_ship.local_pivot, &the_split_ship->front_ship.orient, &the_split_ship->front_ship.phys_info, frametime);
2297 physics_sim(&the_split_ship->back_ship.local_pivot, &the_split_ship->back_ship.orient, &the_split_ship->back_ship.phys_info, frametime);
2298 the_split_ship->front_ship.length_left -= the_split_ship->front_ship.explosion_vel*frametime;
2299 the_split_ship->back_ship.length_left += the_split_ship->back_ship.explosion_vel *frametime;
2300 the_split_ship->front_ship.cur_clip_plane_pt += the_split_ship->front_ship.explosion_vel*frametime;
2301 the_split_ship->back_ship.cur_clip_plane_pt += the_split_ship->back_ship.explosion_vel *frametime;
2303 float length_left = SDL_max( the_split_ship->front_ship.length_left, the_split_ship->back_ship.length_left );
2305 // mprintf(( "Blowup frame, dist = %.1f \n", length_left ));
2307 if ( length_left < 0 ) {
2308 the_split_ship->used = 0;
2312 maybe_fireball_wipe(&the_split_ship->front_ship, (int*)&the_split_ship->sound_handle);
2313 maybe_fireball_wipe(&the_split_ship->back_ship, (int*)&the_split_ship->sound_handle);
2317 void shipfx_large_blowup_render(ship* shipp)
2319 // This actually renders the original model like it should render.
2320 // object *objp = &Objects[shipp->objnum];
2321 // model_render( shipp->modelnum, &objp->orient, &objp->pos, MR_NORMAL );
2324 SDL_assert( Split_ships_inited );
2325 SDL_assert( shipp->large_ship_blowup_index > -1 );
2327 split_ship *the_split_ship = &Split_ships[shipp->large_ship_blowup_index];
2328 SDL_assert( the_split_ship->used ); // Get John
2330 // vector front_global_pivot, back_global_pivot;
2332 if (the_split_ship->front_ship.length_left > 0) {
2333 half_ship_render_ship_and_debris(&the_split_ship->front_ship,shipp);
2336 if (the_split_ship->back_ship.length_left > 0) {
2337 half_ship_render_ship_and_debris(&the_split_ship->back_ship,shipp);
2340 g3_stop_user_clip_plane();
2344 // ================== DO THE ELECTRIC ARCING STUFF =====================
2345 // Creates any new ones, moves old ones.
2347 #define MAX_ARC_LENGTH_PERCENTAGE 0.25f
2349 #define MAX_EMP_ARC_TIMESTAMP (150.0f)
2351 void shipfx_do_damaged_arcs_frame( ship *shipp )
2355 object *obj = &Objects[shipp->objnum];
2356 ship_info * sip = &Ship_info[shipp->ship_info_index];
2360 float damage = obj->hull_strength / sip->initial_hull_strength;
2366 // don't draw an arc based on damage
2367 if ( damage > 0.30f ) {
2372 // we should draw an arc
2373 if( shipp->emp_intensity > 0.0f){
2377 // Kill off old sparks
2378 for(i=0; i<MAX_SHIP_ARCS; i++){
2379 if(timestamp_valid(shipp->arc_timestamp[i]) && timestamp_elapsed(shipp->arc_timestamp[i])){
2380 shipp->arc_timestamp[i] = timestamp(-1);
2384 // if we shouldn't draw an arc, return
2389 if (!timestamp_valid(shipp->arc_next_time)) {
2390 // start the next fireball up in the next 10 seconds or so...
2393 // if the emp effect is active
2394 if(shipp->emp_intensity > 0.0f){
2395 freq = fl2i(MAX_EMP_ARC_TIMESTAMP);
2397 // otherwise if we're arcing based upon damage
2399 freq = fl2i((damage+0.1f)*5000.0f);
2402 // set the next arc time
2403 shipp->arc_next_time = timestamp_rand(freq*2,freq*4);
2406 if ( timestamp_elapsed(shipp->arc_next_time) ) {
2408 shipp->arc_next_time = timestamp(-1); // invalid, so it gets restarted next frame
2410 //mprintf(( "Creating new ship arc!\n" ));
2412 int n, n_arcs = ((myrand()>>5) % 3)+1; // Create 1-3 sparks
2414 vector v1, v2, v3, v4;
2415 submodel_get_two_random_points( shipp->modelnum, -1, &v1, &v2 );
2416 submodel_get_two_random_points( shipp->modelnum, -1, &v3, &v4 );
2418 // For large ships, cap the length to be 25% of max radius
2419 if ( obj->radius > 200.0f ) {
2420 float max_dist = obj->radius * MAX_ARC_LENGTH_PERCENTAGE;
2426 vm_vec_sub( &tmp, &v1, &v2 );
2427 d = vm_vec_mag_quick( &tmp );
2428 if ( d > max_dist ) {
2429 vm_vec_scale_add( &v1, &v2, &tmp, max_dist / d );
2433 vm_vec_sub( &tmp, &v3, &v2 );
2434 d = vm_vec_mag_quick( &tmp );
2435 if ( d > max_dist ) {
2436 vm_vec_scale_add( &v3, &v2, &tmp, max_dist / d );
2441 vm_vec_sub( &tmp, &v4, &v2 );
2442 d = vm_vec_mag_quick( &tmp );
2443 if ( d > max_dist ) {
2444 vm_vec_scale_add( &v4, &v2, &tmp, max_dist / d );
2451 // int a = 100, b = 1000;
2452 float factor = 1.0f + 0.0025f*obj->radius;
2453 int a = (int) (factor*100.0f);
2454 int b = (int) (factor*1000.0f);
2455 int lifetime = (myrand()%((b)-(a)+1))+(a);
2457 // Create the arc effects
2458 for (i=0; i<MAX_SHIP_ARCS; i++ ) {
2459 if ( !timestamp_valid( shipp->arc_timestamp[i] ) ) {
2460 //shipp->arc_timestamp[i] = timestamp_rand(400,1000); // live up to a second
2461 shipp->arc_timestamp[i] = timestamp(lifetime); // live up to a second
2465 shipp->arc_pts[i][0] = v1;
2466 shipp->arc_pts[i][1] = v2;
2469 shipp->arc_pts[i][0] = v2;
2470 shipp->arc_pts[i][1] = v3;
2474 shipp->arc_pts[i][0] = v2;
2475 shipp->arc_pts[i][1] = v4;
2482 // determine what kind of arc to create
2483 if(shipp->emp_intensity > 0.0f){
2484 shipp->arc_type[i] = MARC_TYPE_EMP;
2486 shipp->arc_type[i] = MARC_TYPE_NORMAL;
2491 break; // Don't need to create anymore
2494 // rotate v2 out of local coordinates into world.
2495 // Use v2 since it is used in every bolt. See above switch().
2497 vm_vec_unrotate(&snd_pos, &v2, &obj->orient);
2498 vm_vec_add2(&snd_pos, &obj->pos );
2500 //Play a sound effect
2501 if ( lifetime > 750 ) {
2502 // 1.00 second effect
2503 snd_play_3d( &Snds[SND_DEBRIS_ARC_05], &snd_pos, &View_position, obj->radius );
2504 } else if ( lifetime > 500 ) {
2505 // 0.75 second effect
2506 snd_play_3d( &Snds[SND_DEBRIS_ARC_04], &snd_pos, &View_position, obj->radius );
2507 } else if ( lifetime > 250 ) {
2508 // 0.50 second effect
2509 snd_play_3d( &Snds[SND_DEBRIS_ARC_03], &snd_pos, &View_position, obj->radius );
2510 } else if ( lifetime > 100 ) {
2511 // 0.25 second effect
2512 snd_play_3d( &Snds[SND_DEBRIS_ARC_02], &snd_pos, &View_position, obj->radius );
2514 // 0.10 second effect
2515 snd_play_3d( &Snds[SND_DEBRIS_ARC_01], &snd_pos, &View_position, obj->radius );
2520 // maybe move arc points around
2521 for (i=0; i<MAX_SHIP_ARCS; i++ ) {
2522 if ( timestamp_valid( shipp->arc_timestamp[i] ) ) {
2523 if ( !timestamp_elapsed( shipp->arc_timestamp[i] ) ) {
2524 // Maybe move a vertex.... 20% of the time maybe?
2526 if ( mr < MY_RAND_MAX/5 ) {
2528 submodel_get_two_random_points( shipp->modelnum, -1, &v1, &v2 );
2533 static_one = shipp->arc_pts[i][0];
2535 static_one = shipp->arc_pts[i][1];
2538 // For large ships, cap the length to be 25% of max radius
2539 if ( obj->radius > 200.0f ) {
2540 float max_dist = obj->radius * MAX_ARC_LENGTH_PERCENTAGE;
2546 vm_vec_sub( &tmp, &v1, &static_one );
2547 d = vm_vec_mag_quick( &tmp );
2548 if ( d > max_dist ) {
2549 vm_vec_scale_add( &v1, &static_one, &tmp, max_dist / d );
2553 shipp->arc_pts[i][mr % 2] = v1;
2560 int l_cruiser_count = 1;
2561 int l_big_count = 2;
2562 int l_huge_count = 3;
2563 float l_max_radius = 3000.0f;
2564 void shipfx_do_lightning_frame( ship *shipp )
2570 vector v1, v2, n1, n2, temp, temp2;
2574 SDL_assert(shipp != NULL);
2578 SDL_assert(shipp->ship_info_index >= 0);
2579 if(shipp->ship_info_index < 0){
2582 SDL_assert(shipp->objnum >= 0);
2583 if(shipp->objnum < 0){
2587 // get some pointers
2588 sip = &Ship_info[shipp->ship_info_index];
2589 objp = &Objects[shipp->objnum];
2591 // if this is not a nebula mission, don't do anything
2592 if(!(The_mission.flags & MISSION_FLAG_FULLNEB)){
2593 shipp->lightning_stamp = -1;
2597 // if this not a cruiser or big ship
2598 if(!((sip->flags & SIF_CRUISER) || (sip->flags & SIF_BIG_SHIP) || (sip->flags & SIF_HUGE_SHIP))){
2599 shipp->lightning_stamp = -1;
2603 // determine stamp and count values
2604 if(sip->flags & SIF_CRUISER){
2605 stamp = (int)((float)(Nebl_cruiser_min + ((Nebl_cruiser_max - Nebl_cruiser_min) * Nebl_intensity)) * frand_range(0.8f, 1.1f));
2606 count = l_cruiser_count;
2609 if(sip->flags & SIF_HUGE_SHIP){
2610 stamp = (int)((float)(Nebl_supercap_min + ((Nebl_supercap_max - Nebl_supercap_min) * Nebl_intensity)) * frand_range(0.8f, 1.1f));
2611 count = l_huge_count;
2613 stamp = (int)((float)(Nebl_cap_min + ((Nebl_cap_max - Nebl_cap_min) * Nebl_intensity)) * frand_range(0.8f, 1.1f));
2614 count = l_big_count;
2618 // if his timestamp is unset
2619 if(shipp->lightning_stamp == -1){
2620 shipp->lightning_stamp = timestamp(stamp);
2623 // if his timestamp is currently unelapsed
2624 if(!timestamp_elapsed(shipp->lightning_stamp)){
2628 mprintf(("SHIP BOLT\n"));
2630 // restamp him first
2631 shipp->lightning_stamp = timestamp(stamp);
2633 // ah, now we can create some lightning bolts
2634 count = (int)frand_range(0.0f, (float)count);
2636 // get 2 points on the hull of the ship
2637 submodel_get_two_random_points(shipp->modelnum, 0, &v1, &v2, &n1, &n2);
2639 // make up to 2 bolts
2640 if(objp->radius > l_max_radius){
2641 vm_vec_scale_add(&temp2, &v1, &n1, l_max_radius);
2643 vm_vec_scale_add(&temp2, &v1, &n1, objp->radius);
2645 vm_vec_unrotate(&temp, &temp2, &objp->orient);
2646 vm_vec_add2(&temp, &objp->pos);
2647 vm_vec_unrotate(&temp2, &v1, &objp->orient);
2648 vm_vec_add2(&temp2, &objp->pos);
2652 binfo.strike = temp2;
2653 binfo.num_strikes = 3;
2654 binfo.noise = 0.045f;
2656 binfo.delay = (int)frand_range(0.0f, 1600.0f);
2666 if(objp->radius > l_max_radius){
2667 vm_vec_scale_add(&temp2, &v2, &n2, l_max_radius);
2669 vm_vec_scale_add(&temp2, &v2, &n2, objp->radius);
2671 vm_vec_unrotate(&temp, &temp2, &objp->orient);
2672 vm_vec_add2(&temp, &objp->pos);
2673 vm_vec_unrotate(&temp2, &v2, &objp->orient);
2674 vm_vec_add2(&temp2, &objp->pos);
2678 binfo.strike = temp2;
2679 binfo.num_strikes = 3;
2680 binfo.noise = 0.045f;
2682 binfo.delay = (int)frand_range(0.0f, 1600.0f);
2689 // do all shockwaves for a ship blowing up
2690 void shipfx_do_shockwave_stuff(ship *shipp, shockwave_create_info *sci)
2695 vector temp, dir, shockwave_pos;
2696 vector head = vmd_zero_vector;
2697 vector tail = vmd_zero_vector;
2702 SDL_assert(shipp != NULL);
2706 SDL_assert(shipp->ship_info_index >= 0);
2707 if(shipp->ship_info_index < 0){
2710 SDL_assert(shipp->objnum >= 0);
2711 if(shipp->objnum < 0){
2714 SDL_assert(sci != NULL);
2719 // get some pointers
2720 sip = &Ship_info[shipp->ship_info_index];
2721 objp = &Objects[shipp->objnum];
2723 SDL_assert(sip->shockwave_count > 0);
2724 if(sip->shockwave_count <= 0){
2728 // get vectors at the head and tail of the object, dead center
2729 pm = model_get(shipp->modelnum);
2733 head.xyz.x = pm->submodel[0].offset.xyz.x;
2734 head.xyz.y = pm->submodel[0].offset.xyz.y;
2735 head.xyz.z = pm->maxs.xyz.z;
2737 tail.xyz.x = pm->submodel[0].offset.xyz.x;
2738 tail.xyz.y = pm->submodel[0].offset.xyz.y;
2739 tail.xyz.z = pm->mins.xyz.z;
2741 // transform the vectors into world coords
2742 vm_vec_unrotate(&temp, &head, &objp->orient);
2743 vm_vec_add(&head, &temp, &objp->pos);
2744 vm_vec_unrotate(&temp, &tail, &objp->orient);
2745 vm_vec_add(&tail, &temp, &objp->pos);
2747 // now create as many shockwaves as needed
2748 vm_vec_sub(&dir, &head, &tail);
2749 step = 1.0f / ((float)sip->shockwave_count + 1.0f);
2751 for(idx=0; idx<sip->shockwave_count; idx++){
2752 // get the shockwave position
2754 vm_vec_scale(&temp, cur);
2755 vm_vec_add(&shockwave_pos, &tail, &temp);
2757 // if knossos device, make shockwave in center
2758 if (Ship_info[shipp->ship_info_index].flags & SIF_KNOSSOS_DEVICE) {
2759 shockwave_pos = Objects[shipp->objnum].pos;
2762 // create the shockwave
2763 shockwave_create_info sci2;
2764 sci2.blast = (sci->blast / (float)sip->shockwave_count) * frand_range(0.75f, 1.25f);
2765 sci2.damage = (sci->damage / (float)sip->shockwave_count) * frand_range(0.75f, 1.25f);
2766 sci2.inner_rad = sci->inner_rad;
2767 sci2.outer_rad = sci->outer_rad;
2768 sci2.speed = sci->speed * frand_range(0.75f, 1.25f);
2769 sci2.rot_angle = frand_range(0.0f, 359.0f);
2771 shockwave_create(shipp->objnum, &shockwave_pos, &sci2, SW_SHIP_DEATH, (int)frand_range(0.0f, 350.0f));
2772 // shockwave_create(shipp->objnum, &objp->pos, sip->shockwave_speed, sip->inner_rad, sip->outer_rad, sip->damage, sip->blast, SW_SHIP_DEATH);
2780 DCF_BOOL(engine_wash, Wash_on);
2781 #define ENGINE_WASH_CHECK_INTERVAL 250 // (4x sec)
2782 // Do engine wash effect for ship
2783 // Assumes length of engine wash is greater than radius of engine wash hemisphere
2784 void engine_wash_ship_process(ship *shipp)
2787 object *objp, *ship_objp, *max_ship_intensity_objp;
2788 int started_with_no_wash = shipp->wash_intensity <= 0 ? 1 : 0;
2794 SDL_assert(shipp != NULL);
2795 SDL_assert(shipp->objnum >= 0);
2796 objp = &Objects[shipp->objnum];
2800 vector world_thruster_pos, world_thruster_norm, apex, thruster_to_ship, apex_to_ship, temp;
2801 float dist_sqr, inset_depth, dot_to_ship, max_ship_intensity;
2804 float max_wash_dist, half_angle, radius_mult;
2806 // if this is not a fighter or bomber, we don't care
2807 if ((objp->type != OBJ_SHIP) || !(Ship_info[shipp->ship_info_index].flags & (SIF_FIGHTER|SIF_BOMBER)) ) {
2811 // is it time to check for engine wash
2812 int time_to_next_hit = timestamp_until(shipp->wash_timestamp);
2813 if (time_to_next_hit < 0) {
2814 if (time_to_next_hit < -ENGINE_WASH_CHECK_INTERVAL) {
2815 time_to_next_hit = 0;
2818 // keep interval constant independent of framerate
2819 shipp->wash_timestamp = timestamp(ENGINE_WASH_CHECK_INTERVAL + time_to_next_hit);
2821 // initialize wash params
2822 shipp->wash_intensity = 0.0f;
2823 vm_vec_zero(&shipp->wash_rot_axis);
2824 max_ship_intensity_objp = NULL;
2825 max_ship_intensity = 0;
2830 // only do damage if we're within half of the max wash distance
2833 // go thru Ship_used_list and check if we're in wash from CAP or SUPERCAP (SIF_HUGE)
2834 for (so = GET_FIRST(&Ship_obj_list); so != END_OF_LIST(&Ship_obj_list); so = GET_NEXT(so)) {
2835 ship_objp = &Objects[so->objnum];
2837 // don't do small ships
2838 if ( (Ship_info[Ships[ship_objp->instance].ship_info_index].flags & SIF_SMALL_SHIP) ) {
2842 pm = model_get(Ships[ship_objp->instance].modelnum);
2843 float ship_intensity = 0;
2845 // if engines disabled, no engine wash
2846 if (ship_get_subsystem_strength(&Ships[ship_objp->instance], SUBSYSTEM_ENGINE) < 0.01) {
2851 if (ship_objp->phys_info.speed > 20.0f)
2854 speed_scale = ship_objp->phys_info.speed/20.0f;
2856 for (idx = 0; idx < pm->n_thrusters; idx++) {
2857 thruster_bank *bank = &pm->thrusters[idx];
2859 // check if thruster bank has engine wash
2860 if (bank->wash_info_index < 0) {
2861 // if huge, give default engine wash
2862 if (Ship_info[Ships[ship_objp->instance].ship_info_index].flags & SIF_HUGE_SHIP) {
2863 bank->wash_info_index = 0;
2864 nprintf(("wash", "Adding default engine wash to ship %s", Ship_info[Ships[ship_objp->instance].ship_info_index].name));
2870 engine_wash_info *ewp = &Engine_wash_info[(int)bank->wash_info_index];
2871 half_angle = ewp->angle;
2872 radius_mult = ewp->radius_mult;
2874 for (j=0; j<bank->num_slots; j++) {
2875 // get world pos of thruster
2876 vm_vec_unrotate(&world_thruster_pos, &bank->pnt[j], &ship_objp->orient);
2877 vm_vec_add2(&world_thruster_pos, &ship_objp->pos);
2879 // get world norm of thruster;
2880 vm_vec_unrotate(&world_thruster_norm, &bank->norm[j], &ship_objp->orient);
2882 // get vector from thruster to ship
2883 vm_vec_sub(&thruster_to_ship, &objp->pos, &world_thruster_pos);
2885 // check if on back side of thruster
2886 dot_to_ship = vm_vec_dotprod(&thruster_to_ship, &world_thruster_norm);
2887 if (dot_to_ship > 0) {
2889 // get max wash distance
2890 max_wash_dist = SDL_max(ewp->length, bank->radius[j]*ewp->radius_mult);
2892 // check if within dist range
2893 dist_sqr = vm_vec_mag_squared(&thruster_to_ship);
2894 if (dist_sqr < max_wash_dist*max_wash_dist) {
2896 // check if inside the sphere
2897 if (dist_sqr < radius_mult*radius_mult*bank->radius[j]*bank->radius[j]) {
2898 vm_vec_crossprod(&temp, &world_thruster_norm, &thruster_to_ship);
2899 vm_vec_scale_add2(&shipp->wash_rot_axis, &temp, dot_to_ship / dist_sqr);
2900 // shipp->wash_intensity += (1.0f - dist_sqr / (max_wash_dist*max_wash_dist));
2901 ship_intensity += (1.0f - dist_sqr / (max_wash_dist*max_wash_dist));
2903 if (dist_sqr < 0.25 * max_wash_dist * max_wash_dist) {
2908 // check if inside cone - first fine apex of cone
2909 inset_depth = float(bank->radius[j] / tan(half_angle));
2910 vm_vec_scale_add(&apex, &world_thruster_pos, &world_thruster_norm, -inset_depth);
2911 vm_vec_sub(&apex_to_ship, &objp->pos, &apex);
2912 vm_vec_normalize(&apex_to_ship);
2914 // check if inside cone angle
2915 if (vm_vec_dotprod(&apex_to_ship, &world_thruster_norm) > cos(half_angle)) {
2916 vm_vec_crossprod(&temp, &world_thruster_norm, &thruster_to_ship);
2917 vm_vec_scale_add2(&shipp->wash_rot_axis, &temp, dot_to_ship / dist_sqr);
2918 // shipp->wash_intensity += (1.0f - dist_sqr / (max_wash_dist*max_wash_dist));
2919 ship_intensity += (1.0f - dist_sqr / (max_wash_dist*max_wash_dist));
2921 if (dist_sqr < 0.25 * max_wash_dist * max_wash_dist) {
2931 shipp->wash_intensity += ship_intensity * speed_scale;
2932 if (ship_intensity > max_ship_intensity) {
2933 max_ship_intensity = ship_intensity;
2934 max_ship_intensity_objp = ship_objp;
2938 // apply damage at rate of 1%/sec
2939 if (shipp->wash_intensity > 0) {
2940 SDL_assert(max_ship_intensity_objp != NULL);
2942 nprintf(("wash", "Wash intensity %.2f\n", shipp->wash_intensity));
2948 damage = (0.001f * 0.003f * ENGINE_WASH_CHECK_INTERVAL * Ship_info[shipp->ship_info_index].initial_hull_strength * shipp->wash_intensity);
2951 ship_apply_wash_damage(&Objects[shipp->objnum], max_ship_intensity_objp, damage);
2953 // if we had no wash before now, add the wash object sound
2954 if(started_with_no_wash){
2955 if(shipp != Player_ship){
2956 obj_snd_assign(shipp->objnum, SND_ENGINE_WASH, &vmd_zero_vector, 1);
2958 Player_engine_wash_loop = snd_play_looping( &Snds[SND_ENGINE_WASH], 0.0f, 1.0f);
2962 // if we've got no wash, kill any wash object sounds from this guy
2964 if(shipp != Player_ship){
2965 obj_snd_delete(shipp->objnum, SND_ENGINE_WASH);
2967 snd_stop(Player_engine_wash_loop);
2968 Player_engine_wash_loop = -1;
2973 // engine wash level init
2974 void shipfx_engine_wash_level_init()
2976 Player_engine_wash_loop = -1;
2979 // pause engine wash sounds
2980 void shipfx_stop_engine_wash_sound()
2982 if(Player_engine_wash_loop != -1){
2983 snd_stop(Player_engine_wash_loop);
2984 Player_engine_wash_loop = -1;