added copyright header

[taylor/freespace2.git] / src / ship / shiphit.cpp

/*
 * Copyright (C) Volition, Inc. 1999.  All rights reserved.
 *
 * All source code herein is the property of Volition, Inc. You may not sell 
 * or otherwise commercially exploit the source or things you created based on
 * the source.
 */

/*
 * $Logfile: /Freespace2/code/Ship/ShipHit.cpp $
 * $Revision$
 * $Date$
 * $Author$
 *
 * Code to deal with a ship getting hit by something, be it a missile, dog, or ship.
 *
 * $Log$
 * Revision 1.4  2002/06/09 04:41:26  relnev
 * added copyright header
 *
 * Revision 1.3  2002/06/02 04:26:34  relnev
 * warning cleanup
 *
 * Revision 1.2  2002/05/03 13:34:34  theoddone33
 * More stuff compiles
 *
 * Revision 1.1.1.1  2002/05/03 03:28:10  root
 * Initial import.
 *
 * 
 * 61    9/14/99 3:26a Dave
 * Fixed laser fogging problem in nebula (D3D)> Fixed multiplayer
 * respawn-too-early problem. Made a few crash points safe.
 * 
 * 60    9/13/99 4:52p Dave
 * RESPAWN FIX
 * 
 * 59    9/09/99 11:17a Jimb
 * Removed bogus Int3() in do_subobj_hit_stuff(). 
 * 
 * 58    9/07/99 4:01p Dave
 * Fixed up a string.tbl paroblem (self destruct message). Make sure IPX
 * does everything properly (setting up address when binding). Remove
 * black rectangle background from UI_INPUTBOX.
 * 
 * 57    9/03/99 11:39p Mikek
 * Fix problem in sm3-01 of dual-fired Helios bombs only doing 1/4 damage.
 * 
 * 56    9/03/99 2:24p Mikek
 * Decrease overall damage done to player at Medium and Hard.  I believe
 * this was the major culprit in Flak cannons being so nasty.  The firing
 * rate seems to not have been an issue.
 * 
 * 55    9/02/99 11:55a Mikek
 * Zero damage to small ship subsystems from shockwaves.
 * 
 * 54    9/01/99 10:15a Dave
 * 
 * 53    8/27/99 10:42a Andsager
 * Don't reposition shockwave for BIG only HUGE ships
 * 
 * 52    8/27/99 1:34a Andsager
 * Modify damage by shockwaves for BIG|HUGE ships.  Modify shockwave damge
 * when weapon blows up.
 * 
 * 51    8/26/99 10:46p Andsager
 * Apply shockwave damage to lethality.
 * 
 * 50    8/26/99 8:52p Dave
 * Gave multiplayer TvT messaging a heavy dose of sanity. Cheat codes.
 * 
 * 49    8/26/99 5:14p Andsager
 * 
 * 48    8/26/99 9:45a Dave
 * First pass at easter eggs and cheats.
 * 
 * 47    8/23/99 11:59a Andsager
 * Force choice of big fireball when Knossos destroyed.  Allow logging of
 * ship destroyed when no killer_name (ie, from debug).
 * 
 * 46    8/22/99 5:53p Dave
 * Scoring fixes. Added self destruct key. Put callsigns in the logfile
 * instead of ship designations for multiplayer players.
 * 
 * 45    8/22/99 1:19p Dave
 * Fixed up http proxy code. Cleaned up scoring code. Reverse the order in
 * which d3d cards are detected.
 * 
 * 44    8/20/99 5:09p Andsager
 * Second pass on Knossos device explosion
 * 
 * 43    8/20/99 1:42p Andsager
 * Frist pass on Knossos explosion.
 * 
 * 42    8/06/99 9:46p Dave
 * Hopefully final changes for the demo.
 * 
 * 41    8/03/99 11:02p Dave
 * Maybe fixed sync problems in multiplayer.
 * 
 * 40    8/02/99 1:59p Dave
 * Fixed improper damage application to subobjects on a "big damage" ship.
 * 
 * 39    7/24/99 1:54p Dave
 * Hud text flash gauge. Reworked dead popup to use 4 buttons in red-alert
 * missions.
 * 
 * 38    7/19/99 7:20p Dave
 * Beam tooling. Specialized player-killed-self messages. Fixed d3d nebula
 * pre-rendering.
 * 
 * 37    7/09/99 12:51a Andsager
 * Modify engine wash (1) less damage (2) only at a closer range (3) no
 * damage when engine is disabled
 * 
 * 36    6/30/99 5:53p Dave
 * Put in new anti-camper code.
 * 
 * 35    6/28/99 4:51p Andsager
 * Add ship-guardian sexp (does not allow ship to be killed)
 * 
 * 34    6/21/99 7:25p Dave
 * netplayer pain packet. Added type E unmoving beams.
 * 
 * 33    6/10/99 3:43p Dave
 * Do a better job of syncing text colors to HUD gauges.
 * 
 * 32    5/27/99 12:14p Andsager
 * Some fixes for live debris when more than one subsys on ship with live
 * debris.  Set subsys strength (when 0) blows off subsystem.
 * sexp_hits_left_subsystem works for SUBSYSTEM_UNKNOWN.
 * 
 * 31    5/21/99 5:03p Andsager
 * Add code to display engine wash death.  Modify ship_kill_packet
 * 
 * 30    5/21/99 1:44p Andsager
 * Add engine wash gauge
 * 
 * 29    5/14/99 11:50a Andsager
 * Added vaporize for SMALL ships hit by HUGE beams.  Modified dying
 * frame.  Enlarged debris shards and range at which visible.
 * 
 * 28    5/12/99 2:55p Andsager
 * Implemented level 2 tag as priority in turret object selection
 * 
 * 27    5/11/99 10:16p Andsager
 * First pass on engine wash effect.  Rotation (control input), damage,
 * shake.  
 * 
 * 26    4/28/99 11:13p Dave
 * Temporary checkin of artillery code.
 * 
 * 25    4/23/99 12:01p Johnson
 * Added SIF_HUGE_SHIP
 * 
 * 24    4/20/99 3:43p Andsager
 * Added normal parameter to ship_apply_local_damage for case of ship_ship
 * collision.
 * 
 * 23    4/16/99 5:54p Dave
 * Support for on/off style "stream" weapons. Real early support for
 * target-painting lasers.
 * 
 * 22    3/29/99 6:17p Dave
 * More work on demo system. Got just about everything in except for
 * blowing ships up, secondary weapons and player death/warpout.
 * 
 * 21    3/19/99 9:51a Dave
 * Checkin to repair massive source safe crash. Also added support for
 * pof-style nebulae, and some new weapons code.
 * 
 * 21    3/15/99 6:45p Daveb
 * Put in rough nebula bitmap support.
 * 
 * 20    3/10/99 6:51p Dave
 * Changed the way we buffer packets for all clients. Optimized turret
 * fired packets. Did some weapon firing optimizations.
 * 
 * 19    2/26/99 6:01p Andsager
 * Add sexp has-been-tagged-delay and cap-subsys-cargo-known-delay
 * 
 * 18    2/26/99 5:39p Johnson
 * Put in some handling code for an assert().
 * 
 * 17    2/11/99 5:22p Andsager
 * Fixed bugs, generalized block Sexp_variables
 * 
 * 16    2/05/99 10:38a Johnson
 * Fixed improper object array reference. 
 * 
 * 15    2/04/99 1:23p Andsager
 * Apply max spark limit to ships created in mission parse
 * 
 * 14    1/30/99 1:29a Dave
 * Fixed nebula thumbnail problem. Full support for 1024x768 choose pilot
 * screen.  Fixed beam weapon death messages.
 * 
 * 13    1/29/99 2:08a Dave
 * Fixed beam weapon collisions with players. Reduced size of scoring
 * struct for multiplayer. Disabled PXO.
 * 
 * 12    1/27/99 10:25p Andsager
 * Added OEM sparks - make intelligent choice of next spark location for
 * cruiser and cap ships
 * 
 * 11    1/25/99 5:03a Dave
 * First run of stealth, AWACS and TAG missile support. New mission type
 * :)
 * 
 * 10    1/21/99 4:22p Anoop
 * Removed bogus Int3() from show_dead_message(...)
 * 
 * 9     1/12/99 5:45p Dave
 * Moved weapon pipeline in multiplayer to almost exclusively client side.
 * Very good results. Bandwidth goes down, playability goes up for crappy
 * connections. Fixed object update problem for ship subsystems.
 * 
 * 8     12/23/98 2:53p Andsager
 * Added ship activation and gas collection subsystems, removed bridge
 * 
 * 7     11/17/98 4:27p Andsager
 * Stop sparks from emitting from destroyed subobjects
 * 
 * 6     11/09/98 2:11p Dave
 * Nebula optimizations.
 * 
 * 5     10/26/98 9:42a Dave
 * Early flak gun support.
 * 
 * 4     10/20/98 1:39p Andsager
 * Make so sparks follow animated ship submodels.  Modify
 * ship_weapon_do_hit_stuff() and ship_apply_local_damage() to add
 * submodel_num.  Add submodel_num to multiplayer hit packet.
 * 
 * 3     10/13/98 9:29a Dave
 * Started neatening up freespace.h. Many variables renamed and
 * reorganized. Added AlphaColors.[h,cpp]
 * 
 * 2     10/07/98 10:53a Dave
 * Initial checkin.
 * 
 * 1     10/07/98 10:51a Dave
 * 
 * 145   9/01/98 6:48p Dave
 * Energy suck weapon. Removed a couple of now-bogus asserts in tracker
 * code.
 * 
 * 144   8/25/98 1:48p Dave
 * First rev of EMP effect. Player side stuff basically done. Next comes
 * AI code.
 * 
 * 143   6/09/98 10:31a Hoffoss
 * Created index numbers for all xstr() references.  Any new xstr() stuff
 * added from here on out should be added to the end if the list.  The
 * current list count can be found in FreeSpace.cpp (search for
 * XSTR_SIZE).
 * 
 * 142   5/24/98 8:49p Allender
 * put in Int3() to try and trap nasty error in multiplayer
 * 
 * 141   5/22/98 12:08p Mike
 * Don't create "Disarmed" event for small ships.
 * 
 * 140   5/22/98 11:00a Mike
 * Balance sm3-09a.
 * 
 * 139   5/18/98 12:41a Allender
 * fixed subsystem problems on clients (i.e. not reporting properly on
 * damage indicator).  Fixed ingame join problem with respawns.  minor
 * comm menu stuff
 * 
 * 138   5/13/98 6:54p Dave
 * More sophistication to PXO interface. Changed respawn checking so
 * there's no window for desynchronization between the server and the
 * clients.
 * 
 * 137   5/11/98 11:37a Mike
 * Don't allow deathroll duration for large ships to be shortened by
 * excess damage.
 * 
 * 136   5/10/98 11:30p Mike
 * Better firing of bombs, less likely to go into strafe mode.
 * 
 * 135   5/07/98 12:24a Hoffoss
 * Finished up sidewinder force feedback support.
 * 
 * 134   5/06/98 8:47a Andsager
 * Initial check in, allow ship sparks to turn on and off depending on
 * damage.
 * 
 * 133   5/06/98 1:12a Allender
 * fix sequencing names, added nprintf to help respawn debugging
 * 
 * 132   5/04/98 4:07p Andsager
 * Reduce deathroll rotvel cap and average by 25%.
 * 
 * 131   5/04/98 11:12a Mike
 * Make kamikaze ships detonate on impact -- no death roll.
 * 
 * 130   4/30/98 12:17a Andsager
 * Increase deathroll time for big ships and decrease max rotvel for big
 * ships
 * 
 * 129   4/27/98 6:02p Dave
 * Modify how missile scoring works. Fixed a team select ui bug. Speed up
 * multi_lag system. Put in new main hall.
 * 
 * 128   4/27/98 2:23p Andsager
 * Create fireballs on destroying subsystems of big ships.  Limit number
 * of sparks on small ships.
 * 
 * 127   4/24/98 5:35p Andsager
 * Fix sparks sometimes drawing not on model.  If ship is sphere in
 * collision, don't draw sparks.  Modify ship_apply_local_damage() to take
 * parameter no_spark.
 * 
 * 126   4/23/98 4:47p Andsager
 * Make deathroll rotvel have z component largest.
 * 
 * 125   4/22/98 9:10a Andsager
 * Resrore z component of deathroll rotvel, as before.  
 * 
 * 124   4/21/98 11:20p Andsager
 * Modify deatroll rotvel. Fix bug getting only positive values.  Add
 * random to current rotvel, make z rotvel always larger than x or y.
 * Move call to shipfx_large_blowup_init into Ship.cpp.
 * 
 * 123   4/21/98 10:38a Mike
 * Don't allow player to take _any_ kind of damage past stage 2 of
 * warpout.
 * 
 * 122   4/20/98 5:10p John
 * Took out cap of number of shards using num_particles.
 * 
 * 121   4/17/98 1:17p Mike
 * Fix bug with uninitialized damage_to_apply.
 * 
 * 120   4/17/98 11:05a Mike
 * Make number of pieces of small debris created by subsystem hits be
 * based on detail level.
 * Fix location of turret subsystem.  Was doubly globalizing, very bad on
 * large ships!
 * 
 * 119   4/16/98 3:40p Mike
 * Make subsys destroyed messages only get sent once.
 * 
 * 118   4/15/98 11:06p Mike
 * Better balance of damage done to subsystems by shockwaves.
 * 
 * 117   4/15/98 10:13p Mike
 * Fix application of damage to subsystems.
 * 
 * 116   4/14/98 9:15p John
 * Added flag to specify which ships get the new large ship exploding
 * effect.
 * 
 * 115   4/14/98 4:56p John
 * Hooked in Andsager's large ship exploding code, but it is temporarily
 * disabled.
 * 
 * 114   4/12/98 11:16a John
 * Made palette red hit effect more proportional to damage.
 * 
 * 113   4/10/98 12:16p Allender
 * fix ship hit kill and debris packets
 * 
 * 112   4/10/98 1:38a Allender
 * fix bug with -1 vs 255 (for current secondary bank).  Undid previous
 * code for ship_kill packets.
 * 
 * 111   4/09/98 5:44p Allender
 * multiplayer network object fixes.  debris and self destructed ships
 * should all sync up.  Fix problem where debris pieces (hull pieces) were
 * not getting a net signature
 * 
 * 110   4/09/98 5:27p Mike
 * Speed up deathrolls for smaller ships a bit.
 * 
 * 109   4/06/98 7:13p Allender
 * generate the death text
 * 
 * 108   4/01/98 1:48p Allender
 * major changes to ship collision in multiplayer.  Clients now do own
 * ship/ship collisions (with their own ship only)  Modifed the hull
 * update packet to be sent quicker when object is target of player.
 * 
 * 107   3/31/98 5:19p John
 * Removed demo/save/restore.  Made NDEBUG defined compile.  Removed a
 * bunch of debug stuff out of player file.  Made model code be able to
 * unload models and malloc out only however many models are needed.
 *  
 * 
 * 106   3/30/98 2:38p Mike
 * Add asteroid_density to detail level support.
 * No force explosion damage in training missions.
 * Make cargo deathrolls shorter.
 * 
 * 105   3/30/98 1:08a Lawrance
 * Implement "blast" icon.  Blink HUD icon when player ship is hit by a
 * blast.
 * 
 * 104   3/24/98 4:26p Lawrance
 * Make finding out if player killed self easier and more reliable
 * 
 * 103   3/24/98 2:16p Mike
 * Fix bug with variation in death roll rotational velocity.  It wasn't
 * getting initialized!
 * 
 * 102   3/21/98 3:36p Lawrance
 * Let damage gauge know when player has taken damage.
 * 
 * 101   3/21/98 3:37p Mike
 * Fix/optimize attacking of big ships.
 * 
 * 100   3/19/98 5:35p Lawrance
 * Correctly inform player if killed by ship explosion.
 *
 * $NoKeywords: $
 */

#include "pstypes.h"
#include "object.h"
#include "fvi.h"
#include "physics.h"
#include "vecmat.h"
#include "ship.h"
#include "model.h"
#include "key.h"
#include "weapon.h"
#include "radar.h"
#include "2d.h"
#include "3d.h"
#include "floating.h"
#include "ai.h"
#include "ailocal.h"
#include "fireballs.h"
#include "debris.h"
#include "hud.h"
#include "timer.h"
#include "cfile.h"
#include "missionlog.h"
#include "missionparse.h"
#include "bmpman.h"
#include "joy.h"
#include "joy_ff.h"
#include "player.h"
#include "parselo.h"
#include "freespace.h"
#include "sound.h"
#include "linklist.h"
#include "hudets.h"
#include "hudtarget.h"
#include "multi.h"
#include "multiutil.h"
#include "aigoals.h"
#include "gamesnd.h"
#include "eventmusic.h"
#include "shipfx.h"
#include "sexp.h"
#include "gamesequence.h"
#include "objectsnd.h"
#include "cmeasure.h"
#include "animplay.h"
#include "controlsconfig.h"
#include "afterburner.h"
#include "shockwave.h"
#include "hudsquadmsg.h"
#include "swarm.h"
#include "shiphit.h"
#include "multimsgs.h"
#include "particle.h"
#include "multi_respawn.h"
#include "popup.h"
#include "emp.h"
#include "beam.h"
#include "demo.h"
#include "multi_pmsg.h"

//#pragma optimize("", off)
//#pragma auto_inline(off)

typedef struct spark_pair {
        int index1, index2;
        float dist;
} spark_pair;

#define MAX_SPARK_PAIRS         ((MAX_SHIP_HITS * MAX_SHIP_HITS - MAX_SHIP_HITS) / 2)

#define BIG_SHIP_MIN_RADIUS     80.0f   //      ship radius above which death rolls can't be shortened by excessive damage

vector  Dead_camera_pos;
vector  Original_vec_to_deader;

//      Decrease damage applied to a subsystem based on skill level.
float   Skill_level_subsys_damage_scale[NUM_SKILL_LEVELS] = {0.2f, 0.4f, 0.6f, 0.8f, 1.0f};

bool is_subsys_destroyed(ship *shipp, int submodel)
{
        ship_subsys *subsys;

        if (submodel == -1) {
                false;
        }

        for ( subsys=GET_FIRST(&shipp->subsys_list); subsys != END_OF_LIST(&shipp->subsys_list); subsys = GET_NEXT(subsys) ) {
                if (subsys->system_info->subobj_num == submodel) {
                        if (subsys->current_hits > 0) {
                                return false;
                        } else {
                                return true;
                        }
                }
        }

        return false;
}

// do_subobj_destroyed_stuff is called when a subobject for a ship is killed.  Separated out
// to separate function on 10/15/97 by MWA for easy multiplayer access.  It does all of the
// cool things like blowing off the model (if applicable, writing the logs, etc)
void do_subobj_destroyed_stuff( ship *ship_p, ship_subsys *subsys, vector* hitpos )
{
        ship_info *sip;
        object *ship_obj;
        model_subsystem *psub;
        vector  g_subobj_pos;
        int type, i, log_index;

        // get some local variables
        sip = &Ship_info[ship_p->ship_info_index];
        ship_obj = &Objects[ship_p->objnum];
        psub = subsys->system_info;
        type = psub->type;
        get_subsystem_world_pos(ship_obj, subsys, &g_subobj_pos);

        // create fireballs when subsys destroy for large ships.
        object* objp = &Objects[ship_p->objnum];
        if (objp->radius > 100.0f) {
                // number of fireballs determined by radius of subsys
                int num_fireballs;
                if ( psub->radius < 3 ) {
                        num_fireballs = 1;
                } else {
                         num_fireballs = 5;
                }

                vector temp_vec, center_to_subsys, rand_vec;
                vm_vec_sub(&center_to_subsys, &g_subobj_pos, &objp->pos);
                for (int i=0; i<num_fireballs; i++) {
                        if (i==0) {
                                // make first fireball at hitpos
                                if (hitpos) {
                                        temp_vec = *hitpos;
                                } else {
                                        temp_vec = g_subobj_pos;
                                }
                        } else {
                                // make other fireballs at random positions, but try to keep on the surface
                                vm_vec_rand_vec_quick(&rand_vec);
                                float dot = vm_vec_dotprod(&center_to_subsys, &rand_vec);
                                vm_vec_scale_add2(&rand_vec, &center_to_subsys, -dot/vm_vec_mag_squared(&center_to_subsys));
                                vm_vec_scale_add(&temp_vec, &g_subobj_pos, &rand_vec, 0.5f*psub->radius);
                        }

                        // scale fireball size according to size of subsystem, but not less than 10
                        float fireball_rad = psub->radius * 0.2f;
                        if (fireball_rad < 10) {
                                fireball_rad = 10.0f;
                        }

                        vector fb_vel;
                        vm_vec_crossprod(&fb_vel, &objp->phys_info.rotvel, &center_to_subsys);
                        vm_vec_add2(&fb_vel, &objp->phys_info.vel);
                        fireball_create( &temp_vec, FIREBALL_EXPLOSION_MEDIUM, OBJ_INDEX(objp), fireball_rad, 0, &fb_vel );
                }
        }

        if ( MULTIPLAYER_MASTER ) {
                int index;

                index = ship_get_index_from_subsys(subsys, ship_p->objnum);
                
                vector hit;
                if (hitpos) {
                        hit = *hitpos;
                } else {
                        hit = g_subobj_pos;
                }
                send_subsystem_destroyed_packet( ship_p, index, hit );
        }

        // next do a quick sanity check on the current hits that we are keeping for the generic subsystems
        // I think that there might be rounding problems with the floats.  This code keeps us safe.
        if ( ship_p->subsys_info[type].num == 1 ) {
                ship_p->subsys_info[type].current_hits = 0.0f;
        } else {
                float hits;
                ship_subsys *ssp;

                hits = 0.0f;
                for ( ssp=GET_FIRST(&ship_p->subsys_list); ssp != END_OF_LIST(&ship_p->subsys_list); ssp = GET_NEXT(ssp) ) {
                        if ( ssp->system_info->type == type )
                                hits += ssp->current_hits;
                }
                ship_p->subsys_info[type].current_hits = hits;
        }

        // store an event in the event log.  Also, determine if all turrets or all
        // engines have been destroyed (if the subsystem is a turret or engine).
        // put a disabled or disarmed entry in the log if this is the case
        // 
        // MWA -- 1/8/98  A problem was found when trying to determine (via sexpression) when some subsystems
        // were destroyed.  The bottom line is that is the psub->name and psub->subobj_name are different,
        // then direct detection doesn't work.  (This scenario happens mainly with turrets and probably with
        // engines).  So, my solution is to encode the ship_info index, and the subsystem index into one
        // integer, and pass that as the "index" parameter to add_entry.  We'll use that information to
        // print out the info in the mission log.
        Assert( ship_p->ship_info_index < 65535 );

        // get the "index" of this subsystem in the ship info structure.
        for ( i = 0; i < sip->n_subsystems; i++ ) {
                if ( &(sip->subsystems[i]) == psub )
                        break;
        }
        Assert( i < sip->n_subsystems );
        Assert( i < 65535 );
        log_index = ((ship_p->ship_info_index << 16) & 0xffff0000) | (i & 0xffff);

        // Don't log or display info about the activation subsytem
        int display = (psub->type != SUBSYSTEM_ACTIVATION);
        if (display) {
                mission_log_add_entry(LOG_SHIP_SUBSYS_DESTROYED, ship_p->ship_name, psub->subobj_name, log_index );
                if ( ship_obj == Player_obj ) {
                        snd_play( &Snds[SND_SUBSYS_DIE_1], 0.0f );
                        HUD_printf(XSTR( "Your %s subsystem has been destroyed", 499), psub->name);
                }
        }

        if ( psub->type == SUBSYSTEM_TURRET ) {
                if ( ship_p->subsys_info[type].current_hits == 0.0f ) {
                        //      Don't create "disarmed" event for small ships.
                        if (!(Ship_info[ship_p->ship_info_index].flags & SIF_SMALL_SHIP)) {
                                mission_log_add_entry(LOG_SHIP_DISARMED, ship_p->ship_name, NULL );
                                // ship_p->flags |= SF_DISARMED;
                        }
                }
        } else if (psub->type == SUBSYSTEM_ENGINE ) {
                // when an engine is destroyed, we must change the max velocity of the ship
                // to be some fraction of its normal maximum value

                if ( ship_p->subsys_info[type].current_hits == 0.0f ) {
                        mission_log_add_entry(LOG_SHIP_DISABLED, ship_p->ship_name, NULL );
                        ship_p->flags |= SF_DISABLED;                           // add the disabled flag
                }
        }

        if ( psub->subobj_num > -1 )    {
                shipfx_blow_off_subsystem(ship_obj,ship_p,subsys,&g_subobj_pos);
                subsys->submodel_info_1.blown_off = 1;
        }

        if ( (psub->subobj_num != psub->turret_gun_sobj) && (psub->turret_gun_sobj >-1) )               {
                subsys->submodel_info_2.blown_off = 1;
        }

        // play sound effect when subsys gets blown up
        int sound_index=-1;
        if ( Ship_info[ship_p->ship_info_index].flags & SIF_HUGE_SHIP ) {
                sound_index=SND_CAPSHIP_SUBSYS_EXPLODE;
        } else if ( Ship_info[ship_p->ship_info_index].flags & SIF_BIG_SHIP ) {
                sound_index=SND_SUBSYS_EXPLODE;
        }
        if ( sound_index >= 0 ) {
                snd_play_3d( &Snds[sound_index], &g_subobj_pos, &View_position );
        }
}

// Return weapon type that is associated with damaging_objp
// input:       damaging_objp           =>      object pointer responsible for damage
//      exit:           -1              =>      no weapon type is associated with damage object
//                              >=0     =>      weapon type associated with damage object
int shiphit_get_damage_weapon(object *damaging_objp)
{
        int weapon_info_index = -1;

        if ( damaging_objp ) {
                switch(damaging_objp->type) {
                case OBJ_WEAPON:
                        weapon_info_index = Weapons[damaging_objp->instance].weapon_info_index;
                        break;
                case OBJ_SHOCKWAVE:
                        weapon_info_index = shockwave_weapon_index(damaging_objp->instance);
                        break;
                default:
                        weapon_info_index = -1;
                        break;
                }
        }

        return weapon_info_index;
}

//      Return range at which this object can apply damage.
//      Based on object type and subsystem type.
float subsys_get_range(object *other_obj, ship_subsys *subsys)
{
        float   range;

        if (other_obj->type == OBJ_SHOCKWAVE) {
                range = Shockwaves[other_obj->instance].outer_radius * 0.75f;   //      Shockwaves were too lethal to subsystems.
        } else if ( subsys->system_info->type == SUBSYSTEM_TURRET ) {
                range = subsys->system_info->radius*3;
        } else {
                range = subsys->system_info->radius*2;
        }

        return range;
}

#define MAX_DEBRIS_SHARDS       16              // cap the amount of debris shards that fly off per hit

// Make some random debris particles.  Previous way was not very random.  Create debris 75% of the time.
// Don't worry about multiplayer since this debris is the small stuff that cannot collide
void create_subsys_debris(object *ship_obj, vector *hitpos)
{
        float show_debris = frand();
        
        if ( show_debris <= 0.75f ) {
                int ndebris;

                ndebris = (int)(show_debris * Detail.num_small_debris) + 1;                     // number of pieces of debris to create

                if ( ndebris > MAX_DEBRIS_SHARDS )
                        ndebris = MAX_DEBRIS_SHARDS;

                //mprintf(( "Damage = %.1f, ndebris=%d\n", show_debris, ndebris ));
                for (int i=0; i<ndebris; i++ )  {
                        debris_create( ship_obj, -1, -1, hitpos, hitpos, 0, 1.0f );
                }
        }
}

void create_vaporize_debris(object *ship_obj, vector *hitpos)
{
        int ndebris;
        float show_debris = frand();

        ndebris = (int)(4.0f * ((0.5f + show_debris) * Detail.num_small_debris)) + 5;                   // number of pieces of debris to create

        if ( ndebris > MAX_DEBRIS_SHARDS ) {
                ndebris = MAX_DEBRIS_SHARDS;
        }

        //mprintf(( "Damage = %.1f, ndebris=%d\n", show_debris, ndebris ));
        for (int i=0; i<ndebris; i++ )  {
                debris_create( ship_obj, -1, -1, hitpos, hitpos, 0, 1.4f );
        }
}

#define MAX_SUBSYS_LIST 32

typedef struct {
        float   dist;
        float   range;
        ship_subsys     *ptr;
} sublist;

// do_subobj_hit_stuff() is called when a collision is detected between a ship and something
// else.  This is where we see if any sub-objects on the ship should take damage.
//
//      Depending on where the collision occurs, the sub-system and surrounding hull will take 
// different amounts of damage.  The amount of damage a sub-object takes depending on how
// close the colliding object is to the center of the sub-object.  The remaining hull damage
// will be returned to the caller via the damage parameter.
//
//
// 0   -> 0.5 radius   : 100% subobject    0%  hull
// 0.5 -> 1.0 radius   :  50% subobject   50%  hull
// 1.0 -> 2.0 radius   :  25% subobject   75%  hull
//     >  2.0 radius   :   0% subobject  100%  hull
//
//
// The weapon damage is not neccesarily distributed evently between sub-systems when more than
// one sub-system is to take damage.  Whenever damage is to be assigned to a sub-system, the above
// percentages are used.  So, if more than one sub-object is taking damage, the second sub-system
// to be assigned damage will take less damage.  Eg. weapon hits in the 25% damage range of two
// subsytems, and the weapon damage is 12.  First subsystem takes 3 points damage.  Second subsystem
// will take 0.25*9 = 2.25 damage.  Should be close enough for most cases, and hull would receive 
// 0.75 * 9 = 6.75 damage.
//
//      Used to use the following constants, but now damage is linearly scaled up to 2x the subsystem
//      radius.  Same damage applied as defined by constants below.
//
//      Returns unapplied damage, which will probably be applied to the hull.
//
// Shockwave damage is handled here.  If other_obj->type == OBJ_SHOCKWAVE, it's a shockwave.
// apply the same damage to all subsystems.
//      Note: A negative damage number means to destroy the corresponding subsystem.  For example, call with -SUBSYSTEM_ENGINE to destroy engine.

float do_subobj_hit_stuff(object *ship_obj, object *other_obj, vector *hitpos, float damage)
{
        vector                  g_subobj_pos;
        float                           damage_left;
        int                             weapon_info_index;
        ship_subsys             *subsys;
        ship                            *ship_p;
        sublist                 subsys_list[MAX_SUBSYS_LIST];
        vector                  hitpos2;

        ship_p = &Ships[ship_obj->instance];

        //      Don't damage player subsystems in a training mission.
        if ( The_mission.game_type & MISSION_TYPE_TRAINING ) {
                if (ship_obj == Player_obj){
                        return damage;
                }
        }

        //      Shockwave damage is applied like weapon damage.  It gets consumed.
        if (other_obj->type == OBJ_SHOCKWAVE) {
                //      MK, 9/2/99.  Shockwaves do zero subsystem damage on small ships.
                if ( Ship_info[ship_p->ship_info_index].flags & (SIF_SMALL_SHIP))
                        return damage;
                else {

                        damage_left = Shockwaves[other_obj->instance].damage/4.0f;
                }
                hitpos2 = other_obj->pos;
        } else {
                damage_left = damage;
                hitpos2 = *hitpos;
        }

        // scale subsystem damage if appropriate
        weapon_info_index = shiphit_get_damage_weapon(other_obj);
        if ((other_obj->type == OBJ_WEAPON) && ( weapon_info_index >= 0 )) {
                damage_left *= Weapon_info[weapon_info_index].subsystem_factor;
        }


#ifndef NDEBUG
        float hitpos_dist = vm_vec_dist( hitpos, &ship_obj->pos );      
        if ( hitpos_dist > ship_obj->radius * 2.0f )    {
                mprintf(( "BOGUS HITPOS PASSED TO DO_SUBOBJ_HIT_STUFF (%.1f > %.1f)!\n", hitpos_dist, ship_obj->radius * 2.0f ));
                // Int3();      // Get John ASAP!!!!  Someone passed a local coordinate instead of world for hitpos probably.
        }
#endif

        create_subsys_debris(ship_obj, hitpos);

        //      First, create a list of the N subsystems within range.
        //      Then, one at a time, process them in order.
        int     count = 0;
        for ( subsys=GET_FIRST(&ship_p->subsys_list); subsys != END_OF_LIST(&ship_p->subsys_list); subsys = GET_NEXT(subsys) ) {
                #ifndef NDEBUG
                //      Debug option.  If damage is negative of subsystem type, then just destroy that subsystem.
                if (damage < 0.0f) {
                        // single player or multiplayer
                        Assert(Player_ai->targeted_subsys != NULL);
                        if ( (subsys == Player_ai->targeted_subsys) && (subsys->current_hits > 0) ) {
                                Assert(subsys->system_info->type == (int) -damage);
                                ship_p->subsys_info[subsys->system_info->type].current_hits -= subsys->current_hits;
                                if (ship_p->subsys_info[subsys->system_info->type].current_hits < 0) {
                                        ship_p->subsys_info[subsys->system_info->type].current_hits = 0.0f;
                                }
                                subsys->current_hits = 0.0f;
                                do_subobj_destroyed_stuff( ship_p, subsys, hitpos );
                                continue;
                        } else {
                                continue;
                        }
                }
                #endif
                
                if (subsys->current_hits > 0.0f) {
                        float   dist;

                        // calculate the distance between the hit and the subsystem center
                        get_subsystem_world_pos(ship_obj, subsys, &g_subobj_pos);
                        dist = vm_vec_dist_quick(&hitpos2, &g_subobj_pos);

                        float range = subsys_get_range(other_obj, subsys);

                        if ( dist < range) {
                                subsys_list[count].dist = dist;
                                subsys_list[count].range = range;
                                subsys_list[count].ptr = subsys;
                                count++;

                                if (count >= MAX_SUBSYS_LIST){
                                        break;
                                }
                        }
                }
        }

        //      Now scan the sorted list of subsystems in range.
        //      Apply damage to the nearest one first, subtracting off damage as we go.
        int     i, j;
        for (j=0; j<count; j++) {
                float   dist, range;
                ship_subsys     *subsys;

                int     min_index = -1;
                float   min_dist = 9999999.9f;

                for (i=0; i<count; i++) {
                        if (subsys_list[i].dist < min_dist) {
                                min_dist = subsys_list[i].dist;
                                min_index = i;
                        }
                }
                Assert(min_index != -1);

                float   damage_to_apply = 0.0f;
                subsys = subsys_list[min_index].ptr;
                range = subsys_list[min_index].range;
                dist = subsys_list[min_index].dist;
                subsys_list[min_index].dist = 9999999.9f;       //      Make sure we don't use this one again.

                //      HORRIBLE HACK!
                //      MK, 9/4/99
                //      When Helios bombs are dual fired against the Juggernaut in sm3-01 (FS2), they often
                //      miss their target.  There is code dating to FS1 in the collision code to detect that a bomb or
                //      missile has somehow missed its target.  It gets its lifeleft set to 0.1 and then it detonates.
                //      Unfortunately, the shockwave damage was cut by 4 above.  So boost it back up here.
                if ((dist < 10.0f) && (other_obj->type == OBJ_SHOCKWAVE)) {
                        damage_left *= 4.0f * Weapon_info[weapon_info_index].subsystem_factor;;
                }

//              if (damage_left > 100.0f)
//                      nprintf(("AI", "Applying %7.3f damage to subsystem %7.3f units away.\n", damage_left, dist));

                if ( dist < range/2.0f ) {
                        damage_to_apply = damage_left;
                } else if ( dist < range ) {
                        damage_to_apply = damage_left * (1.0f - dist/range);
                }

                // if we're not in CLIENT_NODAMAGE multiplayer mode (which is a the NEW way of doing things)
                if (damage_to_apply > 0.1f && !(MULTIPLAYER_CLIENT) && !(Game_mode & GM_DEMO_PLAYBACK)) {
                        //      Decrease damage to subsystems to player ships.
                        if (ship_obj->flags & OF_PLAYER_SHIP){
                                damage_to_apply *= Skill_level_subsys_damage_scale[Game_skill_level];
                        }
                
                        subsys->current_hits -= damage_to_apply;
                        ship_p->subsys_info[subsys->system_info->type].current_hits -= damage_to_apply;
                        damage_left -= damage_to_apply;         // decrease the damage left to apply to the ship subsystems

                        if (subsys->current_hits < 0.0f) {
                                damage_left -= subsys->current_hits;
                                ship_p->subsys_info[subsys->system_info->type].current_hits -= subsys->current_hits;
                                subsys->current_hits = 0.0f;                                    // set to 0 so repair on subsystem takes immediate effect
                        }

                        if ( ship_p->subsys_info[subsys->system_info->type].current_hits < 0.0f ){
                                ship_p->subsys_info[subsys->system_info->type].current_hits = 0.0f;
                        }

                        // multiplayer clients never blow up subobj stuff on their own
                        if ( (subsys->current_hits <= 0.0f) && !MULTIPLAYER_CLIENT && !(Game_mode & GM_DEMO_PLAYBACK)){
                                do_subobj_destroyed_stuff( ship_p, subsys, hitpos );
                        }

                        if (damage_left <= 0)   { // no more damage to distribute, so stop checking
                                damage_left = 0.0f;
                                break;
                        }
                }
//nprintf(("AI", "j=%i, sys = %s, dam = %6.1f, dam left = %6.1f, subhits = %5.0f\n", j, subsys->system_info->name, damage_to_apply, damage_left, subsys->current_hits));
        }

        //      Note: I changed this to return damage_left and it completely screwed up balance.
        //      It had taken a few MX-50s to destory an Anubis (with 40% hull), then it took maybe ten.
        //      So, I left it alone. -- MK, 4/15/98
        return damage;
}

// Store who/what killed the player, so we can tell the player how he died
void shiphit_record_player_killer(object *killer_objp, player *p)
{
        switch (killer_objp->type) {

        case OBJ_WEAPON:
                p->killer_objtype=OBJ_WEAPON;
                p->killer_weapon_index=Weapons[killer_objp->instance].weapon_info_index;
                p->killer_species = Ship_info[Ships[Objects[killer_objp->parent].instance].ship_info_index].species;

                if ( &Objects[killer_objp->parent] == Player_obj ) {
                        // killed by a missile?
                        if(Weapon_info[p->killer_weapon_index].subtype == WP_MISSILE){
                                p->flags |= PLAYER_FLAGS_KILLED_SELF_MISSILES;
                        } else {
                                p->flags |= PLAYER_FLAGS_KILLED_SELF_UNKNOWN;
                        }
                }

                // in multiplayer, record callsign of killer if killed by another player
                if ( (Game_mode & GM_MULTIPLAYER) && ( Objects[killer_objp->parent].flags & OF_PLAYER_SHIP) ) {
                        int pnum;

                        pnum = multi_find_player_by_object( &Objects[killer_objp->parent] );
                        if ( pnum != -1 ) {
                                strcpy(p->killer_parent_name, Net_players[pnum].player->callsign);
                        } else {
                                nprintf(("Network", "Couldn't find player object of weapon for killer of %s\n", p->callsign));
                        }
                } else {
                        strcpy(p->killer_parent_name, Ships[Objects[killer_objp->parent].instance].ship_name);
                }
                break;

        case OBJ_SHOCKWAVE:
                p->killer_objtype=OBJ_SHOCKWAVE;
                p->killer_weapon_index=shockwave_weapon_index(killer_objp->instance);
                p->killer_species = Ship_info[Ships[Objects[killer_objp->parent].instance].ship_info_index].species;

                if ( &Objects[killer_objp->parent] == Player_obj ) {
                        p->flags |= PLAYER_FLAGS_KILLED_SELF_SHOCKWAVE;
                }

                if ( (Game_mode & GM_MULTIPLAYER) && ( Objects[killer_objp->parent].flags & OF_PLAYER_SHIP) ) {
                        int pnum;

                        pnum = multi_find_player_by_object( &Objects[killer_objp->parent] );
                        if ( pnum != -1 ) {
                                strcpy(p->killer_parent_name, Net_players[pnum].player->callsign);
                        } else {
                                nprintf(("Network", "Couldn't find player object of shockwave for killer of %s\n", p->callsign));
                        }
                } else {
                        strcpy(p->killer_parent_name, Ships[Objects[killer_objp->parent].instance].ship_name);
                }
                break;

        case OBJ_SHIP:
                p->killer_objtype=OBJ_SHIP;
                p->killer_weapon_index=-1;
                p->killer_species = Ship_info[Ships[killer_objp->instance].ship_info_index].species;

                if ( Ships[killer_objp->instance].flags & SF_EXPLODED ) {
                        p->flags |= PLAYER_FLAGS_KILLED_BY_EXPLOSION;
                }

                if ( Ships[Objects[p->objnum].instance].wash_killed ) {
                        p->flags |= PLAYER_FLAGS_KILLED_BY_ENGINE_WASH;
                }

                // in multiplayer, record callsign of killer if killed by another player
                if ( (Game_mode & GM_MULTIPLAYER) && (killer_objp->flags & OF_PLAYER_SHIP) ) {
                        int pnum;

                        pnum = multi_find_player_by_object( killer_objp );
                        if ( pnum != -1 ) {
                                strcpy(p->killer_parent_name, Net_players[pnum].player->callsign);
                        } else {
                                nprintf(("Network", "Couldn't find player object for killer of %s\n", p->callsign));
                        }
                } else {
                        strcpy(p->killer_parent_name, Ships[killer_objp->instance].ship_name);
                }
                break;
        
        case OBJ_DEBRIS:
        case OBJ_ASTEROID:
                if ( killer_objp->type == OBJ_DEBRIS ) {
                        p->killer_objtype = OBJ_DEBRIS;
                } else {
                        p->killer_objtype = OBJ_ASTEROID;
                }
                p->killer_weapon_index=-1;
                p->killer_species = SPECIES_NONE;
                p->killer_parent_name[0] = '\0';
                break;

        case OBJ_BEAM:
                int beam_obj;
                beam_obj = beam_get_parent(killer_objp);
                p->killer_species = SPECIES_NONE;               
                p->killer_objtype = OBJ_BEAM;
                if(beam_obj != -1){                     
                        if((Objects[beam_obj].type == OBJ_SHIP) && (Objects[beam_obj].instance >= 0)){
                                strcpy(p->killer_parent_name, Ships[Objects[beam_obj].instance].ship_name);
                        }
                        p->killer_species = Ship_info[Ships[Objects[beam_obj].instance].ship_info_index].species;
                } else {                        
                        strcpy(p->killer_parent_name, "");
                }
                break;
        
        case OBJ_NONE:
                if ( Game_mode & GM_MULTIPLAYER ) {
                        Int3();
                }
                p->killer_objtype=-1;
                p->killer_weapon_index=-1;
                p->killer_parent_name[0]=0;
                p->killer_species = SPECIES_NONE;
                break;

        default:
                Int3();
                break;
        }
}

//      Say dead stuff.
void show_dead_message(object *ship_obj, object *other_obj)
{
        int pnum;
        player *player_p;

        // not doing anything when a non player dies.
        if ( !(ship_obj->flags & OF_PLAYER_SHIP) ){
                return;
        }

        if(other_obj == NULL){
                return;
        }

        // Get a pointer to the player (we are assured a player ship was killed)
        if ( Game_mode & GM_NORMAL ) {
                player_p = Player;
        } else {
                // in multiplayer, get a pointer to the player that died.
                pnum = multi_find_player_by_object( ship_obj );
                if ( pnum == -1 ) {
                        //Int3();                               // this condition is bad bad bad -- get Allender
                        return;
                }
                player_p = Net_players[pnum].player;
        }

        // multiplayer clients should already have this information.
        if ( !MULTIPLAYER_CLIENT ){
                shiphit_record_player_killer( other_obj, player_p );
        }

        // display a hud message is the guy killed isn't me (multiplayer only)
        /*
        if ( (Game_mode & GM_MULTIPLAYER) && (ship_obj != Player_obj) ) {
                char death_text[256];

                player_generate_death_text( player_p, death_text );
                HUD_sourced_printf(HUD_SOURCE_HIDDEN, death_text);
        }
        */
}

/* JAS: THIS DOESN'T SEEM TO BE USED, SO I COMMENTED IT OUT
//      Apply damage to a ship, destroying if necessary, etc.
//      Returns portion of damage that exceeds ship shields, ie the "unused" portion of the damage.
//      Note: This system does not use the mesh shield.  It applies damage to the overall ship shield.
float apply_damage_to_ship(object *objp, float damage)
{
        float   _ss;

        add_shield_strength(objp, -damage);

        // check if shields are below 0%, if so take leftover damage and apply to ship integrity
        if ((_ss = get_shield_strength(objp)) < 0.0f ) {
                damage = -_ss;
                set_shield_strength(objp, 0.0f);
        } else
                damage = 0.0f;

        return damage;
}
*/

//      Do music processing for a ship hit.
void ship_hit_music(object *ship_obj, object *other_obj)
{
        ship* ship_p = &Ships[ship_obj->instance];

        // Switch to battle track when a ship is hit by fire 
        //
        // If the ship hit has an AI class of none, it is a Cargo, NavBuoy or other non-aggressive
        // ship, so don't start the battle music        
        if (stricmp(Ai_class_names[Ai_info[ship_p->ai_index].ai_class], NOX("none"))) {
                int team_1, team_2;
                // Only start if ship hit and firing ship are from different teams
                team_1 = Ships[ship_obj->instance].team;
                switch ( other_obj->type ) {
                        case OBJ_SHIP:
                                team_2 = Ships[other_obj->instance].team;
                                if ( !stricmp(Ai_class_names[Ai_info[Ships[other_obj->instance].ai_index].ai_class], NOX("none")) ) {
                                        team_1 = team_2;
                                }
                                break;

                        case OBJ_WEAPON:
                                // parent of weapon is object num of ship that fired it
                                team_2 = Ships[Objects[other_obj->parent].instance].team;       
                                break;

                        default:
                                team_2 = team_1;
                                break;  // Unexpected object type collided with ship, no big deal.
                } // end switch

                if ( team_1 != team_2 )
                        event_music_battle_start();
        }
}

//      Make sparks fly off a ship.
// Currently used in misison_parse to create partially damaged ships.
// NOTE: hitpos is in model coordinates on the detail[0] submodel (highest detail hull)
// WILL NOT WORK RIGHT IF ON A ROTATING SUBMODEL
void ship_hit_sparks_no_rotate(object *ship_obj, vector *hitpos)
{
        ship            *ship_p = &Ships[ship_obj->instance];

        int n = ship_p->num_hits;
        if (n >= MAX_SHIP_HITS) {
                n = rand() % MAX_SHIP_HITS;
        } else {
                ship_p->num_hits++;
        }

        // No rotation.  Just make the spark
        ship_p->sparks[n].pos = *hitpos;
        ship_p->sparks[n].submodel_num = -1;

        shipfx_emit_spark(ship_obj->instance, n);               // Create the first wave of sparks

        if ( n == 0 )   {
                ship_p->next_hit_spark = timestamp(0);          // when a hit spot will spark
        }
}

// find the max number of sparks allowed for ship
// limited for fighter by hull % others by radius.
int get_max_sparks(object* ship_obj)
{
        Assert(ship_obj->type == OBJ_SHIP);
        Assert((ship_obj->instance >= 0) && (ship_obj->instance < MAX_SHIPS));
        if(ship_obj->type != OBJ_SHIP){
                return 1;
        }
        if((ship_obj->instance < 0) || (ship_obj->instance >= MAX_SHIPS)){
                return 1;
        }

        ship *ship_p = &Ships[ship_obj->instance];
        ship_info* si = &Ship_info[ship_p->ship_info_index];
        if (si->flags & SIF_FIGHTER) {
                float hull_percent = ship_obj->hull_strength / Ship_info[ship_p->ship_info_index].initial_hull_strength;

                if (hull_percent > 0.8f) {
                        return 1;
                } else if (hull_percent > 0.3f) {
                        return 2;
                } else {
                        return 3;
                }
        } else {
                int num_sparks = (int) (ship_obj->radius * 0.08f);
                if (num_sparks < 3) {
                        return 3;
                } else if (num_sparks > MAX_SHIP_HITS) {
                        return MAX_SHIP_HITS;
                } else {
                        return num_sparks;
                }
        }
}


// helper function to qsort, sorting spark pairs by distance
int spark_compare( const void *elem1, const void *elem2 )
{
        spark_pair *pair1 = (spark_pair *) elem1;
        spark_pair *pair2 = (spark_pair *) elem2;

        Assert(pair1->dist >= 0);
        Assert(pair2->dist >= 0);

        if ( pair1->dist <  pair2->dist ) {
                return -1;
        } else {
                return 1;
        }
}

// for big ships, when all spark slots are filled, make intelligent choice of one to be recycled
int choose_next_spark(object *ship_obj, vector *hitpos)
{
        int i, j, count, num_sparks, num_spark_pairs, spark_num;
        vector world_hitpos[MAX_SHIP_HITS];
        spark_pair spark_pairs[MAX_SPARK_PAIRS];
        ship *shipp = &Ships[ship_obj->instance];

        // only choose next spark when all slots are full
        Assert(get_max_sparks(ship_obj) == Ships[ship_obj->instance].num_hits);

        // get num_sparks
        num_sparks = Ships[ship_obj->instance].num_hits;
        Assert(num_sparks <= MAX_SHIP_HITS);

        // get num_spark_paris -- only sort these
        num_spark_pairs = (num_sparks * num_sparks - num_sparks) / 2;

        // get the world hitpos for all sparks
        bool model_started = false;
        for (spark_num=0; spark_num<num_sparks; spark_num++) {
                if (shipp->sparks[spark_num].submodel_num != -1) {
                        if ( !model_started) {
                                model_started = true;
                                ship_model_start(ship_obj);
                        }
                        model_find_world_point(&world_hitpos[spark_num], &shipp->sparks[spark_num].pos, shipp->modelnum, shipp->sparks[spark_num].submodel_num, &ship_obj->orient, &ship_obj->pos);
                } else {
                        // rotate sparks correctly with current ship orient
                        vm_vec_unrotate(&world_hitpos[spark_num], &shipp->sparks[spark_num].pos, &ship_obj->orient);
                        vm_vec_add2(&world_hitpos[spark_num], &ship_obj->pos);
                }
        }

        if (model_started) {
                ship_model_stop(ship_obj);
        }

        // check we're not making a spark in the same location as a current one
        for (i=0; i<num_sparks; i++) {
                float dist = vm_vec_dist_squared(&world_hitpos[i], hitpos);
                if (dist < 1) {
                        return i;
                }
        }

        // not same location, so maybe do random recyling
        if (frand() > 0.5f) {
                return (rand() % num_sparks);
        }

        // initialize spark pairs
        for (i=0; i<num_spark_pairs; i++) {
                spark_pairs[i].index1 = 0;
                spark_pairs[i].index2 = 0;
                spark_pairs[i].dist = FLT_MAX;
        }

        // set spark pairs
        count = 0;
        for (i=1; i<num_sparks; i++) {
                for (j=0; j<i; j++) {
                        spark_pairs[count].index1 = i;
                        spark_pairs[count].index2 = j;
                        spark_pairs[count++].dist = vm_vec_dist_squared(&world_hitpos[i], &world_hitpos[j]);
                }
        }
        Assert(count == num_spark_pairs);

        // sort pairs
        qsort(spark_pairs, count, sizeof(spark_pair), spark_compare);
        //mprintf(("Min spark pair dist %.1f\n", spark_pairs[0].dist));

        // look through the first few sorted pairs, counting number of indices of closest pair
        int index1 = spark_pairs[0].index1;
        int index2 = spark_pairs[0].index2;
        int count1 = 0;
        int count2 = 0;

        for (i=1; i<6; i++) {
                if (spark_pairs[i].index1 == index1) {
                        count1++;
                }
                if (spark_pairs[i].index2 == index1) {
                        count1++;
                }
                if (spark_pairs[i].index1 == index2) {
                        count2++;
                }
                if (spark_pairs[i].index2 == index2) {
                        count2++;
                }
        }

        // recycle spark which has most indices in sorted list of pairs
        if (count1 > count2) {
                return index1;
        } else {
                return index2;
        }
}


//      Make sparks fly off a ship.
void ship_hit_create_sparks(object *ship_obj, vector *hitpos, int submodel_num)
{
        vector  tempv;
        ship            *ship_p = &Ships[ship_obj->instance];

        int n, max_sparks;

        n = ship_p->num_hits;
        max_sparks = get_max_sparks(ship_obj);

        if (n >= max_sparks)    {
                if ( Ship_info[ship_p->ship_info_index].flags & (SIF_BIG_SHIP | SIF_HUGE_SHIP) ) {
                        // large ship, choose intelligently
                        n = choose_next_spark(ship_obj, hitpos);
                } else {
                        // otherwise, normal choice
                        n = rand() % max_sparks;
                }
        } else {
                ship_p->num_hits++;
        }

        ship *pship = &Ships[ship_obj->instance];

        bool instancing = false;
        // decide whether to do instancing
        if (submodel_num != -1) {
                polymodel *pm = model_get(pship->modelnum);
                if (pm->detail[0] != submodel_num) {
                        // submodel is not hull
                        // OPTIMIZE ... check if submodel can not rotate
                        instancing = true;
                }
        }

        if (instancing) {
                // get the hit position in the subobject RF
                ship_model_start(ship_obj);
                vector temp_zero, temp_x, temp_y, temp_z;
                model_find_world_point(&temp_zero, &vmd_zero_vector, pship->modelnum, submodel_num, &ship_obj->orient, &ship_obj->pos);
                model_find_world_point(&temp_x, &vmd_x_vector, pship->modelnum, submodel_num, &ship_obj->orient, &ship_obj->pos);
                model_find_world_point(&temp_y, &vmd_y_vector, pship->modelnum, submodel_num, &ship_obj->orient, &ship_obj->pos);
                model_find_world_point(&temp_z, &vmd_z_vector, pship->modelnum, submodel_num, &ship_obj->orient, &ship_obj->pos);
                ship_model_stop(ship_obj);

                // find submodel x,y,z axes
                vm_vec_sub2(&temp_x, &temp_zero);
                vm_vec_sub2(&temp_y, &temp_zero);
                vm_vec_sub2(&temp_z, &temp_zero);

                // find displacement from submodel origin
                vector diff;
                vm_vec_sub(&diff, hitpos, &temp_zero);

                // find displacement from submodel origin in submodel RF
                ship_p->sparks[n].pos.x = vm_vec_dotprod(&diff, &temp_x);
                ship_p->sparks[n].pos.y = vm_vec_dotprod(&diff, &temp_y);
                ship_p->sparks[n].pos.z = vm_vec_dotprod(&diff, &temp_z);
                ship_p->sparks[n].submodel_num = submodel_num;
                ship_p->sparks[n].end_time = timestamp(-1);
        } else {
                // Rotate hitpos into ship_obj's frame of reference.
                vm_vec_sub(&tempv, hitpos, &ship_obj->pos);
                vm_vec_rotate(&ship_p->sparks[n].pos, &tempv, &ship_obj->orient);
                ship_p->sparks[n].submodel_num = -1;
                ship_p->sparks[n].end_time = timestamp(-1);
        }

        // Create the first wave of sparks
        shipfx_emit_spark(ship_obj->instance, n);

        if ( n == 0 )   {
                ship_p->next_hit_spark = timestamp(0);          // when a hit spot will spark
        }
}

//      Called from ship_hit_kill() when we detect the player has been killed.
void player_died_start(object *killer_objp)
{
        nprintf(("Network", "starting my player death\n"));
        gameseq_post_event(GS_EVENT_DEATH_DIED);        
        
/*      vm_vec_scale_add(&Dead_camera_pos, &Player_obj->pos, &Player_obj->orient.fvec, -10.0f);
        vm_vec_scale_add2(&Dead_camera_pos, &Player_obj->orient.uvec, 3.0f);
        vm_vec_scale_add2(&Dead_camera_pos, &Player_obj->orient.rvec, 5.0f);
*/

        //      Create a good vector for the camera to move along during death sequence.
        object  *other_objp = NULL;

        // on multiplayer clients, there have been occasions where we haven't been able to determine
        // the killer of a ship (due to bogus/mismatched/timed-out signatures on the client side).  If
        // we don't know the killer, use the Player_obj as the other_objp for camera position.
        if ( killer_objp ) {
                switch (killer_objp->type) {
                case OBJ_WEAPON:
                case OBJ_SHOCKWAVE:
                        other_objp = &Objects[killer_objp->parent];
                        break;
                case OBJ_SHIP:
                case OBJ_DEBRIS:
                case OBJ_ASTEROID:
                case OBJ_NONE:  //      Something that just got deleted due to also dying -- it happened to me! --MK.           
                        other_objp = killer_objp;
                        break;

                case OBJ_BEAM:
                        int beam_obj_parent;
                        beam_obj_parent = beam_get_parent(killer_objp);
                        if(beam_obj_parent == -1){
                                other_objp = killer_objp;
                        } else {
                                other_objp = &Objects[beam_obj_parent];
                        }
                        break;

                default:
                        Int3();         //      Killed by an object of a peculiar type.  What is it?
                        other_objp = killer_objp;       //      Enable to continue, just in case we shipped it with this bug...
                }
        } else {
                other_objp = Player_obj;
        }

        vm_vec_add(&Original_vec_to_deader, &Player_obj->orient.fvec, &Player_obj->orient.rvec);
        vm_vec_scale(&Original_vec_to_deader, 2.0f);
        vm_vec_add2(&Original_vec_to_deader, &Player_obj->orient.uvec);
        vm_vec_normalize(&Original_vec_to_deader);

        vector  vec_from_killer;
        vector  *side_vec;
        float           dist;

        Assert(other_objp != NULL);

        if (Player_obj == other_objp) {
                dist = 50.0f;
                vec_from_killer = Player_obj->orient.fvec;
        } else {
                dist = vm_vec_normalized_dir(&vec_from_killer, &Player_obj->pos, &other_objp->pos);
        }

        if (dist > 100.0f)
                dist = 100.0f;
        vm_vec_scale_add(&Dead_camera_pos, &Player_obj->pos, &vec_from_killer, dist);

        float   dot = vm_vec_dot(&Player_obj->orient.rvec, &vec_from_killer);
        if (fl_abs(dot) > 0.8f)
                side_vec = &Player_obj->orient.fvec;
        else
                side_vec = &Player_obj->orient.rvec;
        
        vm_vec_scale_add2(&Dead_camera_pos, side_vec, 10.0f);

        Player_ai->target_objnum = -1;          //      Clear targeting.  Otherwise, camera pulls away from player as soon as he blows up.

        // stop any playing emp effect
        emp_stop_local();
}


#define DEATHROLL_TIME                                          3000                    //      generic deathroll is 3 seconds (3 * 1000 milliseconds)
#define MIN_PLAYER_DEATHROLL_TIME               1000                    // at least one second deathroll for a player
#define DEATHROLL_ROTVEL_CAP                            6.3f                    // maximum added deathroll rotvel in rad/sec (about 1 rev / sec)
#define DEATHROLL_ROTVEL_MIN                            0.8f                    // minimum added deathroll rotvel in rad/sec (about 1 rev / 12 sec)
#define DEATHROLL_MASS_STANDARD                 50                              // approximate mass of lightest ship
#define DEATHROLL_VELOCITY_STANDARD     70                              // deathroll rotvel is scaled according to ship velocity
#define DEATHROLL_ROTVEL_SCALE                  4                               // constant determines how quickly deathroll rotvel is ramped up  (smaller is faster)

void ai_announce_ship_dying(object *dying_objp);

void saturate_fabs(float *f, float max)
{
        if ( fl_abs(*f) > max) {
                if (*f > 0)
                        *f = max;
                else
                        *f = -max;
        }
}

// function to do generic things when a ship explodes
void ship_generic_kill_stuff( object *objp, float percent_killed )
{
        float rotvel_mag;
        int     delta_time;
        ship    *sp;

        Assert(objp->type == OBJ_SHIP);
        Assert(objp->instance >= 0 && objp->instance < MAX_SHIPS );
        if((objp->type != OBJ_SHIP) || (objp->instance < 0) || (objp->instance >= MAX_SHIPS)){
                return;
        }
        sp = &Ships[objp->instance];
        ship_info *sip = &Ship_info[sp->ship_info_index];

        // if recording demo
        if(Game_mode & GM_DEMO_RECORD){
                demo_POST_ship_kill(objp);
        }

        ai_announce_ship_dying(objp);

        sp->flags |= SF_DYING;
        objp->phys_info.flags |= (PF_DEAD_DAMP | PF_REDUCED_DAMP);
        delta_time = (int) (DEATHROLL_TIME);

        //      For smaller ships, subtract off time proportional to excess damage delivered.
        if (objp->radius < BIG_SHIP_MIN_RADIUS)
                delta_time -=  (int) (1.01f - 4*percent_killed);

        //      Cut down cargo death rolls.  Looks a little silly. -- MK, 3/30/98.
        if (sip->flags & SIF_CARGO) {
                delta_time /= 4;
        }
        
        //      Prevent bogus timestamps.
        if (delta_time < 2)
                delta_time = 2;
        
        if (objp->flags & OF_PLAYER_SHIP) {
                //      Note: Kamikaze ships have no minimum death time.
                if (!(Ai_info[Ships[objp->instance].ai_index].ai_flags & AIF_KAMIKAZE) && (delta_time < MIN_PLAYER_DEATHROLL_TIME))
                        delta_time = MIN_PLAYER_DEATHROLL_TIME;
        }

        //nprintf(("AI", "ShipHit.cpp: Frame %i, Gametime = %7.3f, Ship %s will die in %7.3f seconds.\n", Framecount, f2fl(Missiontime), Ships[objp->instance].ship_name, (float) delta_time/1000.0f));

        //      Make big ships have longer deathrolls.
        //      This is debug code by MK to increase the deathroll time so ships have time to evade the shockwave.
        //      Perhaps deathroll time should be specified in ships.tbl.
        float damage = ship_get_exp_damage(objp);

        if (damage >= 250.0f)
                delta_time += 3000 + (int)(damage*4.0f + 4.0f*objp->radius);

        if (Ai_info[sp->ai_index].ai_flags & AIF_KAMIKAZE)
                delta_time = 2;

        // Knossos gets 7-10 sec to die, time for "little" explosions
        if (Ship_info[sp->ship_info_index].flags & SIF_KNOSSOS_DEVICE) {
                delta_time = 7000 + (int)(frand() * 3000.0f);
                Ship_info[sp->ship_info_index].explosion_propagates = 0;
        }
        sp->final_death_time = timestamp(delta_time);   // Give him 3 secs to explode

        if (sp->flags & SF_VAPORIZE) {
                // Assert(Ship_info[sp->ship_info_index].flags & SIF_SMALL_SHIP);

                // LIVE FOR 100 MS
                sp->final_death_time = timestamp(100);
        }

        //nprintf(("AI", "Time = %7.3f: final_death_time set to %7.3f\n", (float) timestamp_ticker/1000.0f, (float) sp->final_death_time/1000.0f));

        sp->pre_death_explosion_happened = 0;                           // The little fireballs haven't came in yet.

        sp->next_fireball = timestamp(0);       //start one right away

        ai_deathroll_start(objp);

        // play death roll begin sound
        sp->death_roll_snd = snd_play_3d( &Snds[SND_DEATH_ROLL], &objp->pos, &View_position, objp->radius );
        if (objp == Player_obj)
                joy_ff_deathroll();

        // apply a whack
        //      rotational velocity proportional to original translational velocity, with a bit added in.
        //      Also, preserve half of original rotational velocity.

        // At standard speed (70) and standard mass (50), deathroll rotvel should be capped at DEATHROLL_ROTVEL_CAP
        // Minimum deathroll velocity is set    DEATHROLL_ROTVEL_MIN
        // At lower speed, lower death rotvel (scaled linearly)
        // At higher mass, lower death rotvel (scaled logarithmically)
        // variable scale calculates the deathroll rotational velocity magnitude
        float logval = (float) log10(objp->phys_info.mass / (0.05f*DEATHROLL_MASS_STANDARD));
        float velval = ((vm_vec_mag_quick(&objp->phys_info.vel) + 3.0f) / DEATHROLL_VELOCITY_STANDARD);
        float   p1 = (float) (DEATHROLL_ROTVEL_CAP - DEATHROLL_ROTVEL_MIN);

        rotvel_mag = (float) DEATHROLL_ROTVEL_MIN * 2.0f/(logval + 2.0f);
        rotvel_mag += (float) (p1 * velval/logval) * 0.75f;

        // set so maximum velocity from rotation is less than 200
        if (rotvel_mag*objp->radius > 150) {
                rotvel_mag = 150.0f / objp->radius;
        }

        if (sp->dock_objnum_when_dead != -1) {
                // don't change current rotvel
                sp->deathroll_rotvel = objp->phys_info.rotvel;
        } else {
                // if added rotvel is too random, we should decrease the random component, putting a const in front of the rotvel.
                sp->deathroll_rotvel = objp->phys_info.rotvel;
                sp->deathroll_rotvel.x += (frand() - 0.5f) * 2.0f * rotvel_mag;
                saturate_fabs(&sp->deathroll_rotvel.x, 0.75f*DEATHROLL_ROTVEL_CAP);
                sp->deathroll_rotvel.y += (frand() - 0.5f) * 3.0f * rotvel_mag;
                saturate_fabs(&sp->deathroll_rotvel.y, 0.75f*DEATHROLL_ROTVEL_CAP);
                sp->deathroll_rotvel.z += (frand() - 0.5f) * 6.0f * rotvel_mag;
                // make z component  2x larger than larger of x,y
                float largest_mag = max(fl_abs(sp->deathroll_rotvel.x), fl_abs(sp->deathroll_rotvel.y));
                if (fl_abs(sp->deathroll_rotvel.z) < 2.0f*largest_mag) {
                        sp->deathroll_rotvel.z *= (2.0f * largest_mag / fl_abs(sp->deathroll_rotvel.z));
                }
                saturate_fabs(&sp->deathroll_rotvel.z, 0.75f*DEATHROLL_ROTVEL_CAP);
                // nprintf(("Physics", "Frame: %i rotvel_mag: %5.2f, rotvel: (%4.2f, %4.2f, %4.2f)\n", Framecount, rotvel_mag, sp->deathroll_rotvel.x, sp->deathroll_rotvel.y, sp->deathroll_rotvel.z));
        }

        
        // blow out his reverse thrusters. Or drag, same thing.
        objp->phys_info.rotdamp = (float) DEATHROLL_ROTVEL_SCALE / rotvel_mag;
        objp->phys_info.side_slip_time_const = 10000.0f;

        vm_vec_zero(&objp->phys_info.max_vel);          // make so he can't turn on his own VOLITION anymore.

        vm_vec_zero(&objp->phys_info.max_rotvel);       // make so he can't change speed on his own VOLITION anymore.

}

// called from ship_hit_kill if the ship is vaporized
void ship_vaporize(ship *shipp)
{
        object *ship_obj;

        // sanity
        Assert(shipp != NULL);
        if(shipp == NULL){
                return;
        }
        Assert((shipp->objnum >= 0) && (shipp->objnum < MAX_OBJECTS));
        if((shipp->objnum < 0) || (shipp->objnum >= MAX_OBJECTS)){
                return;
        }
        ship_obj = &Objects[shipp->objnum];

        // create debris shards
        create_vaporize_debris(ship_obj, &ship_obj->pos);
}

//      *ship_obj was hit and we've determined he's been killed!  By *other_obj!
void ship_hit_kill(object *ship_obj, object *other_obj, float percent_killed, int self_destruct)
{
        ship *sp;
        char *killer_ship_name;
        int killer_damage_percent = 0;
        object *killer_objp = NULL;

        sp = &Ships[ship_obj->instance];
        show_dead_message(ship_obj, other_obj);

        if (ship_obj == Player_obj) {
                player_died_start(other_obj);
        }

        // maybe vaporize him
        if(sp->flags & SF_VAPORIZE){
                ship_vaporize(sp);
        }

        // hehe
        extern void game_tst_mark(object *objp, ship *shipp);
        game_tst_mark(ship_obj, sp);

        // single player and multiplayer masters evaluate the scoring and kill stuff
        if ( !MULTIPLAYER_CLIENT && !(Game_mode & GM_DEMO_PLAYBACK)) {
                scoring_eval_kill( ship_obj );

                // ship is destroyed -- send this event to the mission log stuff to record this event.  Try to find who
                // killed this ship.  scoring_eval_kill above should leave the obj signature of the ship who killed
                // this guy (or a -1 if no one got the kill).
                killer_ship_name = NULL;
                killer_damage_percent = -1;
                if ( sp->damage_ship_id[0] != -1 ) {
                        object *objp;
                        int sig;

                        sig = sp->damage_ship_id[0];
                        for ( objp = GET_FIRST(&obj_used_list); objp != END_OF_LIST(&obj_used_list); objp = GET_NEXT(objp) ) {
                                if ( objp->signature == sig ){
                                        break;
                                }
                        }
                        // if the object isn't around, the try to find the object in the list of ships which has exited                 
                        if ( objp != END_OF_LIST(&obj_used_list) ) {
                                Assert ( (objp->type == OBJ_SHIP ) || (objp->type == OBJ_GHOST) );                                      // I suppose that this should be true
                                killer_ship_name = Ships[objp->instance].ship_name;

                                killer_objp = objp;
                        } else {
                                int ei;

                                ei = ship_find_exited_ship_by_signature( sig );
                                if ( ei != -1 ){
                                        killer_ship_name = Ships_exited[ei].ship_name;
                                }
                        }
                        killer_damage_percent = (int)(sp->damage_ship[0] * 100.0f);
                }               

                if(!self_destruct){
                        // multiplayer
                        if(Game_mode & GM_MULTIPLAYER){
                                char name1[256] = "";
                                char name2[256] = "";
                                int np_index;

                                // get first name                               
                                np_index = multi_find_player_by_object(ship_obj);                               
                                if((np_index >= 0) && (np_index < MAX_PLAYERS) && (Net_players[np_index].player != NULL)){
                                        strcpy(name1, Net_players[np_index].player->callsign);
                                } else {
                                        strcpy(name1, sp->ship_name);
                                }

                                // argh
                                if((killer_objp != NULL) || (killer_ship_name != NULL)){

                                        // second name
                                        if(killer_objp == NULL){
                                                strcpy(name2, killer_ship_name);
                                        } else {
                                                np_index = multi_find_player_by_object(killer_objp);
                                                if((np_index >= 0) && (np_index < MAX_PLAYERS) && (Net_players[np_index].player != NULL)){
                                                        strcpy(name2, Net_players[np_index].player->callsign);
                                                } else {
                                                        strcpy(name2, killer_ship_name);
                                                }
                                        }                                       
                                }

                                mission_log_add_entry(LOG_SHIP_DESTROYED, name1, name2, killer_damage_percent);
                        } else {
                                // DKA: 8/23/99 allow message log in single player with no killer name
                                //if(killer_ship_name != NULL){
                                mission_log_add_entry(LOG_SHIP_DESTROYED, sp->ship_name, killer_ship_name, killer_damage_percent);
                                //}
                        }
                }

                // maybe praise the player for this kill
                if ( (killer_damage_percent > 10) && (other_obj != NULL) && (other_obj->parent_sig == Player_obj->signature) ) {
                        ship_maybe_praise_player(sp);
                }
        }

        ship_generic_kill_stuff( ship_obj, percent_killed );

        // mwa -- removed 2/25/98 -- why is this here?  ship_obj->flags &= ~(OF_PLAYER_SHIP);
        // if it is for observers, must deal with it a separate way!!!!
        if ( MULTIPLAYER_MASTER ) {
                // check to see if this ship needs to be respawned
                multi_respawn_check(ship_obj);          
                        
                // send the kill packet to all players
                // maybe send vaporize packet to all players
                send_ship_kill_packet( ship_obj, other_obj, percent_killed, self_destruct );
        }       

        // If ship from a player wing ship has died, then maybe play a scream
        if ( !(ship_obj->flags & OF_PLAYER_SHIP) && (sp->flags & SF_FROM_PLAYER_WING) ) {
                ship_maybe_scream(sp);
        }

        // If player is dying, have wingman lament (only in single player)
        if ( (Game_mode & GM_NORMAL) && (ship_obj == Player_obj) ) {
                ship_maybe_lament();
        }
}

// function to simply explode a ship where it is currently at
void ship_self_destruct( object *objp )
{       
        Assert ( objp->type == OBJ_SHIP );

        // try and find a player
        if((Game_mode & GM_MULTIPLAYER) && (multi_find_player_by_object(objp) >= 0)){
                int np_index = multi_find_player_by_object(objp);
                if((np_index >= 0) && (np_index < MAX_PLAYERS) && (Net_players[np_index].player != NULL)){
                        mission_log_add_entry(LOG_SELF_DESTRUCT, Net_players[np_index].player->callsign, NULL );
                } else {
                        mission_log_add_entry(LOG_SELF_DESTRUCT, Ships[objp->instance].ship_name, NULL );
                }
        } else {
                mission_log_add_entry(LOG_SELF_DESTRUCT, Ships[objp->instance].ship_name, NULL );
        }
        
        // check to see if this ship needs to be respawned
        if(MULTIPLAYER_MASTER){
                // player ship?
                int np_index = multi_find_player_by_object(objp);
                if((np_index >= 0) && (np_index < MAX_PLAYERS) && MULTI_CONNECTED(Net_players[np_index]) && (Net_players[np_index].player != NULL)){
                        char msg[512] = "";
                        sprintf(msg, "%s %s", Net_players[np_index].player->callsign, XSTR("Self destructed", 1476));

                        // send a message
                        send_game_chat_packet(Net_player, msg, MULTI_MSG_ALL, NULL, NULL, 2);

                        // printf
                        if(!(Game_mode & GM_STANDALONE_SERVER)){
                                HUD_printf(msg);
                        }
                }
        }

        // self destruct
        ship_hit_kill(objp, NULL, 1.0f, 1);     
}

extern int Homing_hits, Homing_misses;

// Call this instead of physics_apply_whack directly to 
// deal with two ships docking properly.
void ship_apply_whack(vector *force, vector *new_pos, object *objp)
{
        if (objp->type == OBJ_SHIP)     {
                if (Ship_info[Ships[objp->instance].ship_info_index].flags & (SIF_SUPPORT | SIF_CARGO)) {
                        int     docked_to_objnum;       
                        ai_info *aip;

                        aip = &Ai_info[Ships[objp->instance].ai_index];
                
                        if (aip->ai_flags & AIF_DOCKED) {
                                docked_to_objnum = aip->dock_objnum;
                                if (aip->dock_objnum != -1) {
                                        physics_apply_whack(force, new_pos, &Objects[docked_to_objnum].phys_info, &Objects[docked_to_objnum].orient, Objects[docked_to_objnum].phys_info.mass + objp->phys_info.mass);
                                        return;
                                }
                        }
                }
        }
        if (objp == Player_obj) {
                nprintf(("Sandeep", "Playing stupid joystick effect\n"));
                vector test;
                vm_vec_unrotate(&test, force, &objp->orient);

                game_whack_apply( -test.x, -test.y );
        }
                                        
        physics_apply_whack(force, new_pos, &objp->phys_info, &objp->orient, objp->phys_info.mass);
}

float Skill_level_player_damage_scale[NUM_SKILL_LEVELS] = {0.25f, 0.5f, 0.65f, 0.85f, 1.0f};


// If a ship is dying and it gets hit, shorten its deathroll.
//      But, if it's a player, don't decrease below MIN_PLAYER_DEATHROLL_TIME
void shiphit_hit_after_death(object *ship_obj, float damage)
{
        float   percent_killed;
        int     delta_time, time_remaining;
        ship    *shipp = &Ships[ship_obj->instance];
        ship_info       *sip = &Ship_info[shipp->ship_info_index];

        // Since the explosion has two phases (final_death_time and really_final_death_time)
        // we should only shorten the deathroll time if that is the phase we're in.
        // And you can tell by seeing if the timestamp is valid, since it gets set to
        // invalid after it does the first large explosion.
        if ( !timestamp_valid(shipp->final_death_time) )        {
                return;
        }

        // Don't adjust vaporized ship
        if (shipp->flags & SF_VAPORIZE) {
                return;
        }

        //      Don't shorten deathroll on very large ships.
        if (ship_obj->radius > BIG_SHIP_MIN_RADIUS)
                return;

        percent_killed = damage/sip->initial_hull_strength;
        if (percent_killed > 1.0f)
                percent_killed = 1.0f;

        delta_time = (int) (4 * DEATHROLL_TIME * percent_killed);
        time_remaining = timestamp_until(shipp->final_death_time);

        //nprintf(("AI", "Gametime = %7.3f, Time until %s dies = %7.3f, delta = %7.3f\n", f2fl(Missiontime), Ships[ship_obj->instance].ship_name, (float)time_remaining/1000.0f, delta_time));
        if (ship_obj->flags & OF_PLAYER_SHIP)
                if (time_remaining < MIN_PLAYER_DEATHROLL_TIME)
                        return;

        // nprintf(("AI", "Subtracting off %7.3f seconds from deathroll, reducing to %7.3f\n", (float) delta_time/1000.0f, (float) (time_remaining - delta_time)/1000.0f));

        delta_time = time_remaining - delta_time;
        if (ship_obj->flags & OF_PLAYER_SHIP)
                if (delta_time < MIN_PLAYER_DEATHROLL_TIME)
                        delta_time = MIN_PLAYER_DEATHROLL_TIME;

        //      Prevent bogus timestamp.
        if (delta_time < 2)
                delta_time = 2;

        shipp->final_death_time = timestamp(delta_time);        // Adjust time until explosion.
}

MONITOR( ShipHits );
MONITOR( ShipNumDied );

int maybe_shockwave_damage_adjust(object *ship_obj, object *other_obj, float *damage)
{
        ship_subsys *subsys;
        ship *shipp;
        float dist, nearest_dist = FLT_MAX;
        vector g_subobj_pos;
        float max_damage;
        shockwave *sw;

        Assert(ship_obj->type == OBJ_SHIP);
        if (other_obj->type != OBJ_SHOCKWAVE) {
                return 0;
        }

        if (!(Ship_info[Ships[ship_obj->instance].ship_info_index].flags & SIF_HUGE_SHIP)) {
                return 0;
        }

        shipp = &Ships[ship_obj->instance];
        sw = &Shockwaves[other_obj->instance];

        // find closest subsystem distance to shockwave origin
        for (subsys=GET_FIRST(&shipp->subsys_list); subsys != END_OF_LIST(&shipp->subsys_list); subsys = GET_NEXT(subsys) ) {
                get_subsystem_world_pos(ship_obj, subsys, &g_subobj_pos);
                dist = vm_vec_dist_quick(&g_subobj_pos, &other_obj->pos);

                if (dist < nearest_dist) {
                        nearest_dist = dist;
                }
        }

        // get max damage and adjust if needed to account for shockwave created from destroyed weapon
        max_damage = sw->damage;
        if (sw->flags & SW_WEAPON_KILL) {
                max_damage *= 4.0f;
        }

        // scale damage
        // floor of 25%, max if within inner_radius, linear between
        if (nearest_dist > sw->outer_radius) {
                *damage = max_damage / 4.0f;
        } else if (nearest_dist < sw->inner_radius) {
                *damage = max_damage;
        } else {
                *damage = max_damage * (1.0f - 0.75f * (nearest_dist - sw->inner_radius) / (sw->outer_radius - sw->inner_radius));
        }

        return 1;
}

// ------------------------------------------------------------------------
// ship_do_damage()
//
// Do damage assessment on a ship.    This should only be called
// internally by ship_apply_global_damage and ship_apply_local_damage
//
// 
//      input:  ship_obj                =>              object pointer for ship receiving damage
//                              other_obj       =>              object pointer to object causing damage
//                              hitpos          =>              impact world pos on the ship 
//                              TODO:   get a better value for hitpos
//                              damage          =>              damage to apply to the ship
//                              shield_quadrant => which part of shield takes damage, -1 if not shield hit
//                              wash_damage     =>              1 if damage is done by engine wash
void ai_update_lethality(object *ship_obj, object *weapon_obj, float damage);
static void ship_do_damage(object *ship_obj, object *other_obj, vector *hitpos, float damage, int shield_quadrant, int wash_damage=0)
{
        ship *shipp;    
        float subsystem_damage = damage;                        // damage to be applied to subsystems

        Assert(ship_obj->instance >= 0);
        Assert(ship_obj->type == OBJ_SHIP);
        shipp = &Ships[ship_obj->instance];

        // maybe adjust damage done by shockwave for BIG|HUGE
        maybe_shockwave_damage_adjust(ship_obj, other_obj, &damage);

        // update lethality of ship doing damage
        int update_lethality = FALSE;
        update_lethality = ((other_obj != NULL) && (other_obj->type == OBJ_WEAPON) && (other_obj->instance >= 0) && (other_obj->instance < MAX_WEAPONS));
        update_lethality = update_lethality || ((other_obj != NULL) && (other_obj->type == OBJ_SHOCKWAVE) && (other_obj->instance >= 0) && (other_obj->instance < MAX_SHOCKWAVES));
        if (update_lethality) {
                ai_update_lethality(ship_obj, other_obj, damage);
        }

        // if this is a weapon
        if((other_obj != NULL) && (other_obj->type == OBJ_WEAPON) && (other_obj->instance >= 0) && (other_obj->instance < MAX_WEAPONS)){
                damage *= weapon_get_damage_scale(&Weapon_info[Weapons[other_obj->instance].weapon_info_index], other_obj, ship_obj);
        }

        MONITOR_INC( ShipHits, 1 );

        //      Don't damage player ship in the process of warping out.
        if ( Player->control_mode >= PCM_WARPOUT_STAGE2 )       {
                if ( ship_obj == Player_obj ){
                        return;
                }
        }

        if ( (other_obj != NULL) && (other_obj->type == OBJ_WEAPON) ) {         
                // for tvt and dogfight missions, don't scale damage
                if( (Game_mode & GM_MULTIPLAYER) && ((Netgame.type_flags & NG_TYPE_TEAM) || (Netgame.type_flags & NG_TYPE_DOGFIGHT)) ){
                } else {
                        // Do a little "skill" balancing for the player in single player and coop multiplayer
                        if (ship_obj->flags & OF_PLAYER_SHIP)   {
                                damage *= Skill_level_player_damage_scale[Game_skill_level];
                                subsystem_damage *= Skill_level_player_damage_scale[Game_skill_level];
                        }               
                }
        }

        // if this is not a laser, or i'm not a multiplayer client
        // apply pain to me
        if((other_obj != NULL) && ((Weapon_info[Weapons[other_obj->instance].weapon_info_index].subtype != WP_LASER) || !MULTIPLAYER_CLIENT) && (Player_obj != NULL) && (ship_obj == Player_obj)){
                ship_hit_pain(damage);
        }       

        // If the ship is invulnerable, do nothing
        if (ship_obj->flags & OF_INVULNERABLE)  {
                return;
        }

        //      if ship is already dying, shorten deathroll.
        if (shipp->flags & SF_DYING) {
                shiphit_hit_after_death(ship_obj, damage);
                return;
        }
        
        //      If we hit the shield, reduce it's strength and found
        // out how much damage is left over.
        if ( shield_quadrant > -1 && !(ship_obj->flags & OF_NO_SHIELDS) )       {
                float shield_factor = -1.0f;
                int     weapon_info_index;              

                weapon_info_index = shiphit_get_damage_weapon(other_obj);
                if ( weapon_info_index >= 0 ) {
                        shield_factor = Weapon_info[weapon_info_index].shield_factor;
                }

                if ( shield_factor >= 0 ) {
                        damage *= shield_factor;
                        subsystem_damage *= shield_factor;
                }

                if ( damage > 0 ) {
                        float pre_shield = damage;

                        damage = apply_damage_to_shield(ship_obj, shield_quadrant, damage);

                        if(damage > 0.0f){
                                subsystem_damage *= (damage / pre_shield);
                        } else {
                                subsystem_damage = 0.0f;
                        }
                }

                // if shield damage was increased, don't carry over leftover damage at scaled level
                if ( shield_factor > 1 ) {
                        damage /= shield_factor;

                        subsystem_damage /= shield_factor;
                }
        }
                        
        // Apply leftover damage to the ship's subsystem and hull.
        if ( (damage > 0.0f) || (subsystem_damage > 0.0f) )     {
                int     weapon_info_index;              

                float pre_subsys = subsystem_damage;
                subsystem_damage = do_subobj_hit_stuff(ship_obj, other_obj, hitpos, subsystem_damage);
                if(subsystem_damage > 0.0f){
                        damage *= (subsystem_damage / pre_subsys);
                } else {
                        damage = 0.0f;
                }

                // continue with damage?
                if(damage > 0.0){
                        weapon_info_index = shiphit_get_damage_weapon(other_obj);
                        if ( weapon_info_index >= 0 ) {
                                if (Weapon_info[weapon_info_index].wi_flags & WIF_PUNCTURE) {
                                        damage /= 4;
                                }

                                damage *= Weapon_info[weapon_info_index].armor_factor;
                        }

                        // if ship is flagged as can not die, don't let it die
                        if (ship_obj->flags & OF_GUARDIAN) {
                                float min_hull_strength = 0.01f * Ship_info[Ships[ship_obj->instance].ship_info_index].initial_hull_strength;
                                if ( (ship_obj->hull_strength - damage) < min_hull_strength ) {
                                        // find damage needed to take object to min hull strength
                                        damage = ship_obj->hull_strength - min_hull_strength;

                                        // make sure damage is positive
                                        damage = max(0, damage);
                                }
                        }

                        // multiplayer clients don't do damage
                        if(((Game_mode & GM_MULTIPLAYER) && MULTIPLAYER_CLIENT) || (Game_mode & GM_DEMO_PLAYBACK)){
                        } else {
                                ship_obj->hull_strength -= damage;              
                        }

                        // let damage gauge know that player ship just took damage
                        if ( Player_obj == ship_obj ) {
                                hud_gauge_popup_start(HUD_DAMAGE_GAUGE, 5000);
                        }
                
                        // DB - removed 1/12/99 - scoring code properly bails if MULTIPLAYER_CLIENT
                        // in multiplayer, if I am not the host, get out of this function here!!
                        //if ( (Game_mode & GM_MULTIPLAYER) && !(Net_player->flags & NETINFO_FLAG_AM_MASTER) ) {
                                //return;
                        //}             

                        switch (other_obj->type) {
                        case OBJ_SHOCKWAVE:
                                scoring_add_damage(ship_obj,other_obj,damage);
                                break;
                        case OBJ_ASTEROID:
                                // don't call scoring for asteroids
                                break;
                        case OBJ_WEAPON:
                                if((other_obj->parent < 0) || (other_obj->parent >= MAX_OBJECTS)){
                                        scoring_add_damage(ship_obj, NULL, damage);
                                } else {
                                        scoring_add_damage(ship_obj, &Objects[other_obj->parent], damage);
                                }
                                break;
                        default:
                                break;
                        }

                        if (ship_obj->hull_strength <= 0.0f) {

                                MONITOR_INC( ShipNumDied, 1 );

                                ship_info       *sip = &Ship_info[shipp->ship_info_index];

                                // If massive beam hitting small ship, vaporize  otherwise normal damage pipeline
                                // Only vaporize once
                                // multiplayer clients should skip this
                                if(!MULTIPLAYER_CLIENT){
                                        if ( !(shipp->flags & SF_VAPORIZE) ) {
                                                // Only small ships can be vaporized
                                                if (sip->flags & (SIF_SMALL_SHIP)) {
                                                        if (other_obj->type == OBJ_BEAM) {
                                                                int beam_weapon_info_index = beam_get_weapon_info_index(other_obj);
                                                                if ( (beam_weapon_info_index > -1) && (Weapon_info[beam_weapon_info_index].wi_flags & (WIF_BEAM|WIF_HUGE)) ) {                                                          
                                                                        // Flag as vaporized
                                                                        shipp->flags |= SF_VAPORIZE;                                                            
                                                                }
                                                        }
                                                }
                                        }
                                }
                                
                                // maybe engine wash death
                                if (wash_damage) {
                                        shipp->wash_killed = 1;
                                }

                                float percent_killed = -ship_obj->hull_strength/sip->initial_hull_strength;
                                if (percent_killed > 1.0f){
                                        percent_killed = 1.0f;
                                }

                                if ( !(shipp->flags & SF_DYING) && !MULTIPLAYER_CLIENT && !(Game_mode & GM_DEMO_PLAYBACK)){  // if not killed, then kill
                                        ship_hit_kill(ship_obj, other_obj, percent_killed, 0);
                                }
                        }
                }
        }

        // if the hitting object is a weapon, maybe do some fun stuff here
        if(other_obj->type == OBJ_WEAPON){
                weapon_info *wip;
                Assert(other_obj->instance >= 0);
                if(other_obj->instance < 0){
                        return;
                }
                Assert(Weapons[other_obj->instance].weapon_info_index >= 0);
                if(Weapons[other_obj->instance].weapon_info_index < 0){
                        return;
                }
                wip = &Weapon_info[Weapons[other_obj->instance].weapon_info_index];

                // if its a leech weapon
                if(wip->wi_flags & WIF_ENERGY_SUCK){
                        // reduce afterburner fuel
                        shipp->afterburner_fuel -= wip->afterburner_reduce;
                        shipp->afterburner_fuel = (shipp->afterburner_fuel < 0.0f) ? 0.0f : shipp->afterburner_fuel;

                        // reduce weapon energy
                        shipp->weapon_energy -= wip->weapon_reduce;
                        shipp->weapon_energy = (shipp->weapon_energy < 0.0f) ? 0.0f : shipp->weapon_energy;
                }
        }
}

// This gets called to apply damage when something hits a particular point on a ship.
// This assumes that whoever called this knows if the shield got hit or not.
// hitpos is in world coordinates.
// if shield_quadrant is not -1, then that part of the shield takes damage properly.
void ship_apply_local_damage(object *ship_obj, object *other_obj, vector *hitpos, float damage, int shield_quadrant, bool create_spark, int submodel_num, vector *hit_normal)
{
        ship *ship_p    = &Ships[ship_obj->instance];   

        //      If got hit by a weapon, tell the AI so it can react.  Only do this line in single player,
        // or if I am the master in a multiplayer game
        if ( other_obj->type == OBJ_WEAPON && ( !(Game_mode & GM_MULTIPLAYER) || ((Game_mode & GM_MULTIPLAYER) && (Net_player->flags & NETINFO_FLAG_AM_MASTER)) )) {
                weapon  *wp;

                wp = &Weapons[other_obj->instance];
                //      If weapon hits ship on same team and that ship not targeted and parent of weapon not player,
                //      don't do damage.
                //      Ie, player can always do damage.  AI can only damage team if that ship is targeted.
                if (wp->target_num != ship_obj-Objects) {
                        if ((ship_p->team == wp->team) && !(Objects[other_obj->parent].flags & OF_PLAYER_SHIP) ) {
                                /*char  ship_name[64];

                                if (other_obj->parent_type == OBJ_SHIP) {
                                        strcpy(ship_name, Ships[Objects[other_obj->parent].instance].ship_name);
                                } else
                                        strcpy(ship_name, XSTR("[not a ship]",-1));
                                */
                                // nprintf(("AI", "Ignoring hit on %s by weapon #%i, parent = %s\n", ship_p->ship_name, other_obj-Objects, ship_name));
                                return;
                        }
                }
        }

        // only want to check the following in single player or if I am the multiplayer game server
        if ( !MULTIPLAYER_CLIENT && !(Game_mode & GM_DEMO_PLAYBACK) && ((other_obj->type == OBJ_SHIP) || (other_obj->type == OBJ_WEAPON)) ){
                ai_ship_hit(ship_obj, other_obj, hitpos, shield_quadrant, hit_normal);
        }

        //      Cut damage done on the player by 4x in training missions, but do full accredidation
        if ( The_mission.game_type & MISSION_TYPE_TRAINING ){
                if (ship_obj == Player_obj){
                        damage /= 4.0f;
                }
        }       

        // send a packet in multiplayer -- but don't sent it if the ship is already dying.  Clients can
        // take care of dealing with ship hits after a ship is already dead.
        // if ( (MULTIPLAYER_MASTER) && !(ship_p->flags & SF_DYING) ){
                // if this is a player ship which is not mine, send him a ship hit packet
                // int np_index = multi_find_player_by_object(ship_obj);
                // if((np_index > 0) && (np_index < MAX_PLAYERS) && (np_index != MY_NET_PLAYER_NUM) && MULTI_CONNECTED(Net_players[np_index])){
                        // send_ship_hit_packet( ship_obj, other_obj, hitpos, damage, shield_quadrant, submodel_num, &Net_players[np_index]);
                // }
        // }

        // maybe tag the ship
        if(!MULTIPLAYER_CLIENT && (other_obj->type == OBJ_WEAPON) && (Weapon_info[Weapons[other_obj->instance].weapon_info_index].wi_flags & WIF_TAG)) {
                if (Weapon_info[Weapons[other_obj->instance].weapon_info_index].tag_level == 1) {
                        Ships[ship_obj->instance].tag_left = Weapon_info[Weapons[other_obj->instance].weapon_info_index].tag_time;
                        Ships[ship_obj->instance].tag_total = Ships[ship_obj->instance].tag_left;
                        if (Ships[ship_obj->instance].time_first_tagged == 0) {
                                Ships[ship_obj->instance].time_first_tagged = Missiontime;
                        }
                        mprintf(("TAGGED %s for %f seconds\n", Ships[ship_obj->instance].ship_name, Ships[ship_obj->instance].tag_left));
                } else if (Weapon_info[Weapons[other_obj->instance].weapon_info_index].tag_level == 2) {
                        Ships[ship_obj->instance].level2_tag_left = Weapon_info[Weapons[other_obj->instance].weapon_info_index].tag_time;
                        Ships[ship_obj->instance].level2_tag_total = Ships[ship_obj->instance].level2_tag_left;
                        if (Ships[ship_obj->instance].time_first_tagged == 0) {
                                Ships[ship_obj->instance].time_first_tagged = Missiontime;
                        }
                        mprintf(("Level 2 TAGGED %s for %f seconds\n", Ships[ship_obj->instance].ship_name, Ships[ship_obj->instance].level2_tag_left));
                } else {
                        Int3(); // unknown tag level
                }
        }


#ifndef NDEBUG
        if (other_obj->type == OBJ_WEAPON) {
                weapon_info     *wip = &Weapon_info[Weapons[other_obj->instance].weapon_info_index];
                if (wip->wi_flags & WIF_HOMING) {
                        Homing_hits++;
                        // nprintf(("AI", " Hit!  Hits = %i/%i\n", Homing_hits, (Homing_hits + Homing_misses)));
                }
        }
#endif

        
        if ( Event_Music_battle_started == 0 )  {
                ship_hit_music(ship_obj, other_obj);
        }
        

        if (damage < 0.0f){
                damage = 0.0f;
        }

        // evaluate any possible player stats implications
        scoring_eval_hit(ship_obj,other_obj);

        ship_do_damage(ship_obj, other_obj, hitpos, damage, shield_quadrant );

        // DA 5/5/98: move ship_hit_create_sparks() after do_damage() since number of sparks depends on hull strength
        // doesn't hit shield and we want sparks
        if ((shield_quadrant == MISS_SHIELDS) && create_spark)  {
                // check if subsys destroyed
                if ( !is_subsys_destroyed(ship_p, submodel_num) ) {
                        ship_hit_create_sparks(ship_obj, hitpos, submodel_num);
                }
                //fireball_create( hitpos, FIREBALL_SHIP_EXPLODE1, OBJ_INDEX(ship_obj), 0.25f );
        }
}



// This gets called to apply damage when a damaging force hits a ship, but at no 
// point in particular.  Like from a shockwave.   This routine will see if the
// shield got hit and if so, apply damage to it.
// You can pass force_center==NULL if you the damage doesn't come from anywhere,
// like for debug keys to damage an object or something.  It will 
// assume damage is non-directional and will apply it correctly.   
void ship_apply_global_damage(object *ship_obj, object *other_obj, vector *force_center, float damage )
{                               
        vector tmp, world_hitpos;

        if ( force_center )     {
                int shield_quad;
                vector local_hitpos;

                // find world hitpos
                vm_vec_sub( &tmp, force_center, &ship_obj->pos );
                vm_vec_normalize_safe( &tmp );
                vm_vec_scale_add( &world_hitpos, &ship_obj->pos, &tmp, ship_obj->radius );

                // Rotate world_hitpos into local coordinates (local_hitpos)
                vm_vec_sub(&tmp, &world_hitpos, &ship_obj->pos );
                vm_vec_rotate( &local_hitpos, &tmp, &ship_obj->orient );

                // shield_quad = quadrant facing the force_center
                shield_quad = get_quadrant(&local_hitpos);

                // world_hitpos use force_center for shockwave
                if (other_obj->type == OBJ_SHOCKWAVE && Ship_info[Ships[ship_obj->instance].ship_info_index].flags & SIF_HUGE_SHIP) {
                        world_hitpos = *force_center;
                }

                // Do damage on local point             
                ship_do_damage(ship_obj, other_obj, &world_hitpos, damage, shield_quad );
        } else {
                // Since an force_center wasn't specified, this is probably just a debug key
                // to kill an object.   So pick a shield quadrant and a point on the
                // radius of the object.   
                vm_vec_scale_add( &world_hitpos, &ship_obj->pos, &ship_obj->orient.fvec, ship_obj->radius );

                for (int i=0; i<MAX_SHIELD_SECTIONS; i++){
                        ship_do_damage(ship_obj, other_obj, &world_hitpos, damage/MAX_SHIELD_SECTIONS, i);
                }
        }

        // AL 3-30-98: Show flashing blast icon if player ship has taken blast damage
        if ( ship_obj == Player_obj ) {
                // only show blast icon if playing on medium skill or lower
                if ( Game_skill_level <= 2 ) {
                        hud_start_text_flash(XSTR("Blast", 1428), 2000);
                }
        }

        // evaluate any player stats scoring conditions (specifically, blasts from remotely detonated secondary weapons)
        scoring_eval_hit(ship_obj,other_obj,1); 
}

void ship_apply_wash_damage(object *ship_obj, object *other_obj, float damage)
{
        vector world_hitpos, direction_vec, rand_vec;

        // Since an force_center wasn't specified, this is probably just a debug key
        // to kill an object.   So pick a shield quadrant and a point on the
        // radius of the object
        vm_vec_rand_vec_quick(&rand_vec);
        vm_vec_scale_add(&direction_vec, &ship_obj->orient.fvec, &rand_vec, 0.5f);
        vm_vec_normalize_quick(&direction_vec);
        vm_vec_scale_add( &world_hitpos, &ship_obj->pos, &direction_vec, ship_obj->radius );

        // Do damage to hull and not to shields
        ship_do_damage(ship_obj, other_obj, &world_hitpos, damage, -1, 1);

        // AL 3-30-98: Show flashing blast icon if player ship has taken blast damage
        if ( ship_obj == Player_obj ) {
                // only show blast icon if playing on medium skill or lower
                if ( Game_skill_level <= 2 ) {
                        hud_start_text_flash(XSTR("Engine Wash", 1429), 2000);
                }
        }

        // evaluate any player stats scoring conditions (specifically, blasts from remotely detonated secondary weapons)
        scoring_eval_hit(ship_obj,other_obj,1);
}

// player pain
void ship_hit_pain(float damage)
{
        game_flash( damage/15.0f, -damage/30.0f, -damage/30.0f );

        // kill any active popups when you get hit.
        if ( Game_mode & GM_MULTIPLAYER ){
                popup_kill_any_active();
        }
}