src/network/multi_obj.cpp

   1 /*
   2  * Copyright (C) Volition, Inc. 1999.  All rights reserved.
   3  *
   4  * All source code herein is the property of Volition, Inc. You may not sell
   5  * or otherwise commercially exploit the source or things you created based on
   6  * the source.
   7  */
   8
   9 #include "freespace.h"
  10 #include "timer.h"
  11 #include "linklist.h"
  12 #include "weapon.h"
  13 #include "multimsgs.h"
  14 #include "multiutil.h"
  15 #include "multi_obj.h"
  16 #include "multi_rate.h"
  17 #include "multi.h"
  18 #include "object.h"
  19 #include "key.h"
  20 #include "gamesnd.h"
  21 #include "spline.h"
  22 #include "alphacolors.h"
  23 #include "afterburner.h"
  24
  25 // ---------------------------------------------------------------------------------------------------
  26 // OBJECT UPDATE DEFINES/VARS
  27 //
  28
  29 // test stuff
  30 float oo_arrive_time[MAX_SHIPS][5];                             // the last 5 arrival times for each ship
  31 int oo_arrive_time_count[MAX_SHIPS];                    // size of the arrival queue
  32 float oo_arrive_time_avg_diff[MAX_SHIPS];               // the average time between arrivals
  33 float oo_arrive_time_next[MAX_SHIPS];                   // how many seconds have gone by. should be equal to oo_arrive_time_avg_diff[] the next time we get an update
  34
  35 // interp stuff
  36 int oo_interp_count[MAX_SHIPS];
  37 vector oo_interp_points[MAX_SHIPS][2];
  38 bez_spline oo_interp_splines[MAX_SHIPS][2];
  39 void multi_oo_calc_interp_splines(int ship_index, vector *cur_pos, matrix *cur_orient, physics_info *cur_phys_info, vector *new_pos, matrix *new_orient, physics_info *new_phys_info);
  40
  41 // how much data we're willing to put into a given oo packet
  42 #define OO_MAX_SIZE                                     480
  43
  44 // tolerance for bashing position
  45 #define OO_POS_UPDATE_TOLERANCE 100.0f
  46
  47 // new improved - more compacted info type
  48 #define OO_POS_NEW                                      (1<<0)          //
  49 #define OO_ORIENT_NEW                           (1<<1)          //
  50 #define OO_HULL_NEW                                     (1<<2)          // Hull AND shields
  51 #define OO_AFTERBURNER_NEW                      (1<<3)          //
  52 #define OO_SUBSYSTEMS_AND_AI_NEW        (1<<4)          //
  53 #define OO_PRIMARY_BANK                         (1<<5)          // if this is set, fighter has selected bank one
  54 #define OO_PRIMARY_LINKED                       (1<<6)          // if this is set, banks are linked
  55 #define OO_TRIGGER_DOWN                         (1<<7)          // if this is set, trigger is DOWN
  56
  57 #define OO_VIEW_CONE_DOT                        (0.1f)
  58 #define OO_VIEW_DIFF_TOL                        (0.15f)                 // if the dotproducts differ this far between frames, he's coming into view
  59
  60 // no timestamp should ever have sat for longer than this.
  61 #define OO_MAX_TIMESTAMP                        2500
  62
  63 // distance class
  64 #define OO_NEAR                                         0
  65 #define OO_NEAR_DIST                                    (200.0f)
  66 #define OO_MIDRANGE                                     1
  67 #define OO_MIDRANGE_DIST                        (600.0f)
  68 #define OO_FAR                                                  2
  69 #define OO_FAR_DIST                                     (1400.0f)
  70
  71 // how often we should send full hull/shield updates
  72 #define OO_HULL_SHIELD_TIME             600
  73 #define OO_SUBSYS_TIME                          1000
  74
  75 // timestamp values for object update times based on client's update level.
  76 int Multi_oo_target_update_times[MAX_OBJ_UPDATE_LEVELS] =
  77 {
  78         100,                            // 15x a second
  79         100,                            // 15x a second
  80         66,                             // 30x a second
  81         66,
  82 };
  83
  84 // for near ships
  85 int Multi_oo_front_near_update_times[MAX_OBJ_UPDATE_LEVELS] =
  86 {
  87         150,                            // low update
  88         100,                            // medium update
  89         66,                             // high update
  90         66,
  91 };
  92
  93 // for medium ships
  94 int Multi_oo_front_medium_update_times[MAX_OBJ_UPDATE_LEVELS] =
  95 {
  96         250,                            // low update
  97         180,                            // medium update
  98         120,                            // high update
  99         66,
 100 };
 101
 102 // for far ships
 103 int Multi_oo_front_far_update_times[MAX_OBJ_UPDATE_LEVELS] =
 104 {
 105         750,                            // low update
 106         350,                            // medium update
 107         150,                            // high update
 108         66,
 109 };
 110
 111 // for near ships
 112 int Multi_oo_rear_near_update_times[MAX_OBJ_UPDATE_LEVELS] =
 113 {
 114         300,                            // low update
 115         200,                            // medium update
 116         100,                            // high update
 117         66,
 118 };
 119
 120 // for medium ships
 121 int Multi_oo_rear_medium_update_times[MAX_OBJ_UPDATE_LEVELS] =
 122 {
 123         800,                            // low update
 124         600,                            // medium update
 125         300,                            // high update
 126         66,
 127 };
 128
 129 // for far ships
 130 int Multi_oo_rear_far_update_times[MAX_OBJ_UPDATE_LEVELS] =
 131 {
 132         2500,                   // low update
 133         1500,                           // medium update
 134         400,                            // high update
 135         66,
 136 };
 137
 138 // ship index list for possibly sorting ships based upon distance, etc
 139 short OO_ship_index[MAX_SHIPS];
 140
 141 int OO_update_index = -1;                                                       // index into OO_update_records for displaying update record info
 142
 143 // ---------------------------------------------------------------------------------------------------
 144 // OBJECT UPDATE FUNCTIONS
 145 //
 146
 147 object *OO_player_obj;
 148 int OO_sort = 1;
 149
 150 int multi_oo_sort_func(const void *ship1, const void *ship2)
 151 {
 152         object *obj1, *obj2;
 153         short index1, index2;
 154         float dist1, dist2;
 155         float dot1, dot2;
 156         vector v1, v2;
 157         vector vn1, vn2;
 158
 159         // get the 2 indices
 160         memcpy(&index1, ship1, sizeof(short));
 161         memcpy(&index2, ship2, sizeof(short));
 162
 163         // if the indices are bogus, or the objnums are bogus, return ">"
 164         if((index1 < 0) || (index2 < 0) || (Ships[index1].objnum < 0) || (Ships[index2].objnum < 0)){
 165                 return 1;
 166         }
 167
 168         // get the 2 objects
 169         obj1 = &Objects[Ships[index1].objnum];
 170         obj2 = &Objects[Ships[index2].objnum];
 171
 172         // get the distance and dot product to the player obj for both
 173         vm_vec_sub(&v1, &OO_player_obj->pos, &obj1->pos);
 174         dist1 = vm_vec_copy_normalize(&vn1, &v1);
 175         vm_vec_sub(&v2, &OO_player_obj->pos, &obj2->pos);
 176         dist2 = vm_vec_copy_normalize(&vn2, &v2);
 177         dot1 = vm_vec_dotprod(&OO_player_obj->orient.v.fvec, &vn1);
 178         dot2 = vm_vec_dotprod(&OO_player_obj->orient.v.fvec, &vn2);
 179
 180         // objects in front take precedence
 181         if((dot1 < 0.0f) && (dot2 >= 0.0f)){
 182                 return 1;
 183         } else if((dot2 < 0.0f) && (dot1 >= 0.0f)){
 184                 return -1;
 185         }
 186
 187         // otherwise go by distance
 188         return (dist1 <= dist2) ? -1 : 1;
 189 }
 190
 191 // build the list of ship indices to use when updating for this player
 192 void multi_oo_build_ship_list(net_player *pl)
 193 {
 194         int ship_index;
 195         int idx;
 196         ship_obj *moveup;
 197         object *player_obj;
 198
 199         // set all indices to be -1
 200         for(idx = 0;idx<MAX_SHIPS; idx++){
 201                 OO_ship_index[idx] = -1;
 202         }
 203
 204         // get the player object
 205         if(pl->player->objnum < 0){
 206                 return;
 207         }
 208         player_obj = &Objects[pl->player->objnum];
 209
 210         // go through all other relevant objects
 211         ship_index = 0;
 212         for ( moveup = GET_FIRST(&Ship_obj_list); moveup != END_OF_LIST(&Ship_obj_list); moveup = GET_NEXT(moveup) ) {
 213                 // if it is an invalid ship object, skip it
 214                 if((moveup->objnum < 0) || (Objects[moveup->objnum].instance < 0) || (Objects[moveup->objnum].type != OBJ_SHIP)){
 215                         continue;
 216                 }
 217
 218                 // if we're a standalone server, don't send any data regarding its pseudo-ship
 219                 if((Game_mode & GM_STANDALONE_SERVER) && ((&Objects[moveup->objnum] == Player_obj) || (Objects[moveup->objnum].net_signature == STANDALONE_SHIP_SIG)) ){
 220                         continue;
 221                 }
 222
 223                 // must be a ship, a weapon, and _not_ an observer
 224                 if (Objects[moveup->objnum].flags & OF_SHOULD_BE_DEAD){
 225                         continue;
 226                 }
 227
 228                 // don't send info for dying ships
 229                 if (Ships[Objects[moveup->objnum].instance].flags & SF_DYING){
 230                         continue;
 231                 }
 232
 233                 // never update the knossos device
 234                 if ((Ships[Objects[moveup->objnum].instance].ship_info_index >= 0) && (Ships[Objects[moveup->objnum].instance].ship_info_index < Num_ship_types) && (Ship_info[Ships[Objects[moveup->objnum].instance].ship_info_index].flags & SIF_KNOSSOS_DEVICE)){
 235                         continue;
 236                 }
 237
 238                 // don't send him info for himself
 239                 if ( &Objects[moveup->objnum] == player_obj ){
 240                         continue;
 241                 }
 242
 243                 // don't send info for his targeted ship here, since its always done first
 244                 if((pl->s_info.target_objnum != -1) && (moveup->objnum == pl->s_info.target_objnum)){
 245                         continue;
 246                 }
 247
 248                 // add the ship
 249                 if(ship_index < MAX_SHIPS){
 250                         OO_ship_index[ship_index++] = (short)Objects[moveup->objnum].instance;
 251                 }
 252         }
 253
 254         // maybe qsort the thing here
 255         OO_player_obj = player_obj;
 256         if(OO_sort){
 257                 qsort(OO_ship_index, ship_index, sizeof(short), multi_oo_sort_func);
 258         }
 259 }
 260
 261 // pack information for a client (myself), return bytes added
 262 int multi_oo_pack_client_data(ubyte *data)
 263 {
 264         ubyte out_flags;
 265         ushort tnet_signature;
 266         char t_subsys, l_subsys;
 267         int packet_size = 0;
 268
 269         // get our firing stuff
 270         out_flags = Net_player->s_info.accum_buttons;
 271
 272         // zero these values for now
 273         Net_player->s_info.accum_buttons = 0;
 274
 275         // add any necessary targeting flags
 276         if ( Player_ai->current_target_is_locked ){
 277                 out_flags |= OOC_TARGET_LOCKED;
 278         }
 279         if ( Player_ai->ai_flags & AIF_SEEK_LOCK ){
 280                 out_flags |= OOC_TARGET_SEEK_LOCK;
 281         }
 282         if ( Player->locking_on_center ){
 283                 out_flags |= OOC_LOCKING_ON_CENTER;
 284         }
 285         if ( (Player_ship != NULL) && (Player_ship->flags & SF_TRIGGER_DOWN) ){
 286                 out_flags |= OOC_TRIGGER_DOWN;
 287         }
 288
 289         // send my bank info
 290         if(Player_ship != NULL){
 291                 if(Player_ship->weapons.current_primary_bank > 0){
 292                         out_flags |= OOC_PRIMARY_BANK;
 293                 }
 294
 295                 // linked or not
 296                 if(Player_ship->flags & SF_PRIMARY_LINKED){
 297                         out_flags |= OOC_PRIMARY_LINKED;
 298                 }
 299         }
 300
 301         // copy the final flags in
 302         memcpy(data, &out_flags, sizeof(ubyte));
 303         packet_size++;
 304
 305         // client targeting information
 306         t_subsys = -1;
 307         l_subsys = -1;
 308
 309         // if nothing targeted
 310         if(Player_ai->target_objnum == -1){
 311                 tnet_signature = 0;
 312         }
 313         // if something is targeted
 314         else {
 315                 // target net signature
 316                 tnet_signature = Objects[Player_ai->target_objnum].net_signature;
 317
 318                 // targeted subsys index
 319                 if(Player_ai->targeted_subsys != NULL){
 320                         t_subsys = (char)ship_get_index_from_subsys( Player_ai->targeted_subsys, Player_ai->target_objnum );
 321                 }
 322
 323                 // locked targeted subsys index
 324                 if(Player->locking_subsys != NULL){
 325                         l_subsys = (char)ship_get_index_from_subsys( Player->locking_subsys, Player_ai->target_objnum, 1 );
 326                 }
 327         }
 328
 329         // add them all
 330         memcpy(data + packet_size, &tnet_signature, sizeof(ushort));
 331         packet_size += sizeof(ushort);
 332         memcpy(data + packet_size, &t_subsys, sizeof(char));
 333         packet_size += sizeof(char);
 334         memcpy(data + packet_size, &l_subsys, sizeof(char));
 335         packet_size += sizeof(char);
 336
 337         return packet_size;
 338 }
 339
 340 // pack the appropriate info into the data
 341 #define PACK_PERCENT(v)                                 {ubyte upercent; if(v < 0.0f){v = 0.0f;} upercent = (v * 255.0f) <= 255.0f ? (ubyte)(v * 255.0f) : (ubyte)255; memcpy(data + packet_size + header_bytes, &upercent, sizeof(ubyte)); packet_size++; }
 342 int multi_oo_pack_data(net_player *pl, object *objp, ubyte oo_flags, ubyte *data_out)
 343 {
 344         ubyte data[255];
 345         ubyte data_size = 0;
 346         char percent;
 347         ship *shipp;
 348         ship_info *sip;
 349         ubyte ret;
 350         float temp;
 351         int header_bytes;
 352         int packet_size = 0;
 353
 354         // make sure we have a valid ship
 355         SDL_assert(objp->type == OBJ_SHIP);
 356         if((objp->instance >= 0) && (Ships[objp->instance].ship_info_index >= 0)){
 357                 shipp = &Ships[objp->instance];
 358                 sip = &Ship_info[shipp->ship_info_index];
 359         } else {
 360                 return 0;
 361         }
 362
 363         // invalid player
 364         if(pl == NULL){
 365                 return 0;
 366         }
 367
 368         // no flags -> do nothing
 369         if(oo_flags == 0){
 370                 // Int3();
 371                 return 0;
 372         }
 373
 374         // if i'm the client, make sure I only send certain things
 375         if(!MULTIPLAYER_MASTER){
 376                 SDL_assert(oo_flags & (OO_POS_NEW | OO_ORIENT_NEW));
 377                 SDL_assert(!(oo_flags & (OO_HULL_NEW | OO_SUBSYSTEMS_AND_AI_NEW)));
 378         }
 379         // server
 380         else {
 381                 // SDL_assert(oo_flags & OO_POS_NEW);
 382         }
 383
 384         // header sizes
 385         if(MULTIPLAYER_MASTER){
 386                 header_bytes = 5;
 387         } else {
 388                 header_bytes = 2;
 389         }
 390
 391         // if we're a client (and therefore sending control info), pack client-specific info
 392         if((Net_player != NULL) && !(Net_player->flags & NETINFO_FLAG_AM_MASTER)){
 393                 packet_size += multi_oo_pack_client_data(data + packet_size + header_bytes);
 394         }
 395
 396         // position, velocity
 397         if ( oo_flags & OO_POS_NEW ) {
 398                 ret = (ubyte)multi_pack_unpack_position( 1, data + packet_size + header_bytes, &objp->pos );
 399                 packet_size += ret;
 400
 401                 // global records
 402                 multi_rate_add(NET_PLAYER_NUM(pl), "pos", ret);
 403
 404                 ret = (ubyte)multi_pack_unpack_vel( 1, data + packet_size + header_bytes, &objp->orient, &objp->pos, &objp->phys_info );
 405                 packet_size += ret;
 406
 407                 // global records
 408                 multi_rate_add(NET_PLAYER_NUM(pl), "pos", ret);
 409         }
 410
 411         // orientation
 412         if(oo_flags & OO_ORIENT_NEW){
 413                 ret = (ubyte)multi_pack_unpack_orient( 1, data + packet_size + header_bytes, &objp->orient );
 414                 // SDL_assert(ret == OO_ORIENT_RET_SIZE);
 415                 packet_size += ret;
 416                 multi_rate_add(NET_PLAYER_NUM(pl), "ori", ret);
 417
 418                 ret = (ubyte)multi_pack_unpack_rotvel( 1, data + packet_size + header_bytes, &objp->orient, &objp->pos, &objp->phys_info );
 419                 packet_size += ret;
 420
 421                 // global records
 422                 multi_rate_add(NET_PLAYER_NUM(pl), "ori", ret);
 423         }
 424
 425         // forward thrust
 426         percent = (char)(objp->phys_info.forward_thrust * 100.0f);
 427         SDL_assert( percent <= 100 );
 428
 429         memcpy(data + packet_size + header_bytes, &percent, sizeof(char));
 430         packet_size += 1;
 431
 432         // global records
 433         multi_rate_add(NET_PLAYER_NUM(pl), "fth", 1);
 434
 435         // hull info
 436         if ( oo_flags & OO_HULL_NEW ){
 437                 // add the hull value for this guy
 438                 temp = (objp->hull_strength  / Ship_info[shipp->ship_info_index].initial_hull_strength);
 439                 PACK_PERCENT(temp);
 440                 multi_rate_add(NET_PLAYER_NUM(pl), "hul", 1);
 441
 442                 // pack 2 shield values into each byte
 443
 444                 // pack quadrant 1
 445                 temp = (objp->shields[0] / (Ship_info[shipp->ship_info_index].shields / MAX_SHIELD_SECTIONS));
 446                 PACK_PERCENT(temp);
 447
 448                 // pack quadrant 2
 449                 temp = (objp->shields[1] / (Ship_info[shipp->ship_info_index].shields / MAX_SHIELD_SECTIONS));
 450                 PACK_PERCENT(temp);
 451
 452                 // pack quadrant 3
 453                 temp = (objp->shields[2] / (Ship_info[shipp->ship_info_index].shields / MAX_SHIELD_SECTIONS));
 454                 PACK_PERCENT(temp);
 455
 456                 // pack quadrant 2
 457                 temp = (objp->shields[3] / (Ship_info[shipp->ship_info_index].shields / MAX_SHIELD_SECTIONS));
 458                 PACK_PERCENT(temp);
 459
 460                 multi_rate_add(NET_PLAYER_NUM(pl), "shl", 4);
 461         }
 462
 463         // subsystem info
 464         if( oo_flags & OO_SUBSYSTEMS_AND_AI_NEW ){
 465                 ubyte ns;
 466                 ship_subsys *subsysp;
 467
 468                 // just in case we have some kind of invalid data (should've been taken care of earlier in this function)
 469                 if(shipp->ship_info_index < 0){
 470                         ns = 0;
 471                         memcpy(data + packet_size + header_bytes, &ns, sizeof(ubyte));
 472                         packet_size++;
 473
 474                         multi_rate_add(NET_PLAYER_NUM(pl), "sub", 1);
 475                 }
 476                 // add the # of subsystems, and their data
 477                 else {
 478                         ns = (ubyte)Ship_info[shipp->ship_info_index].n_subsystems;
 479                         memcpy(data + packet_size + header_bytes, &ns, sizeof(ubyte));
 480                         packet_size++;
 481                         multi_rate_add(NET_PLAYER_NUM(pl), "sub", 1);
 482
 483                         // now the subsystems.
 484                         for ( subsysp = GET_FIRST(&shipp->subsys_list); subsysp != END_OF_LIST(&shipp->subsys_list); subsysp = GET_NEXT(subsysp) ) {
 485                                 temp = (float)subsysp->current_hits / (float)subsysp->system_info->max_hits;
 486                                 PACK_PERCENT(temp);
 487
 488                                 multi_rate_add(NET_PLAYER_NUM(pl), "sub", 1);
 489                         }
 490                 }
 491
 492                 // ai mode info
 493                 ubyte umode = (ubyte)(Ai_info[shipp->ai_index].mode);
 494                 short submode = (short)(Ai_info[shipp->ai_index].submode);
 495                 ushort target_signature;
 496
 497                 target_signature = 0;
 498                 if ( Ai_info[shipp->ai_index].target_objnum != -1 ){
 499                         target_signature = Objects[Ai_info[shipp->ai_index].target_objnum].net_signature;
 500                 }
 501
 502                 memcpy(data + packet_size + header_bytes, &umode, sizeof(ubyte));
 503                 packet_size++;
 504                 memcpy(data + packet_size + header_bytes, &submode, sizeof(short));
 505                 packet_size += 2;
 506                 memcpy(data + packet_size + header_bytes, &target_signature, sizeof(ushort));
 507                 packet_size += 2;
 508
 509                 multi_rate_add(NET_PLAYER_NUM(pl), "aim", 5);
 510
 511                 // primary weapon energy
 512                 temp = shipp->weapon_energy / sip->max_weapon_reserve;
 513                 PACK_PERCENT(temp);
 514         }
 515
 516         // afterburner info
 517         oo_flags &= ~PF_AFTERBURNER_ON;
 518         if(objp->phys_info.flags & PF_AFTERBURNER_ON){
 519                 oo_flags |= OO_AFTERBURNER_NEW;
 520         }
 521
 522         // if this ship is a support ship, send some extra info
 523         ubyte support_extra = 0;
 524         if(MULTIPLAYER_MASTER && (sip->flags & SIF_SUPPORT) && (shipp->ai_index >= 0) && (shipp->ai_index < MAX_AI_INFO)){
 525                 ushort dock_sig;
 526
 527                 // flag
 528                 support_extra = 1;
 529                 memcpy(data + packet_size + header_bytes, &support_extra, sizeof(ubyte));
 530                 packet_size += 1;
 531                 memcpy(data + packet_size + header_bytes, &Ai_info[shipp->ai_index].ai_flags, sizeof(int));
 532                 packet_size += 4;
 533                 memcpy(data + packet_size + header_bytes, &Ai_info[shipp->ai_index].mode, sizeof(int));
 534                 packet_size += 4;
 535                 memcpy(data + packet_size + header_bytes, &Ai_info[shipp->ai_index].submode, sizeof(int));
 536                 packet_size += 4;
 537                 if((Ai_info[shipp->ai_index].dock_objnum < 0) || (Ai_info[shipp->ai_index].dock_objnum >= MAX_OBJECTS)){
 538                         dock_sig = 0;
 539                 } else {
 540                         dock_sig = Objects[Ai_info[shipp->ai_index].dock_objnum].net_signature;
 541                 }
 542                 memcpy(data + packet_size + header_bytes, &dock_sig, sizeof(ushort));
 543                 packet_size += 2;
 544         } else {
 545                 support_extra = 0;
 546                 memcpy(data + packet_size + header_bytes, &support_extra, sizeof(ubyte));
 547                 packet_size += 1;
 548         }
 549
 550         // make sure we have a valid chunk of data
 551         SDL_assert(packet_size < 255);
 552         if(packet_size >= 255){
 553                 return 0;
 554         }
 555         data_size = (ubyte)packet_size;
 556
 557         // add the object's net signature, type and oo_flags
 558         packet_size = 0;
 559         // don't add for clients
 560         if(Net_player->flags & NETINFO_FLAG_AM_MASTER){
 561                 multi_rate_add(NET_PLAYER_NUM(pl), "sig", 2);
 562                 ADD_USHORT( objp->net_signature );
 563
 564                 multi_rate_add(NET_PLAYER_NUM(pl), "flg", 1);
 565                 ADD_DATA( oo_flags );
 566         }
 567         multi_rate_add(NET_PLAYER_NUM(pl), "siz", 1);
 568         ADD_DATA( data_size );
 569
 570         multi_rate_add(NET_PLAYER_NUM(pl), "seq", 1);
 571         ADD_DATA( shipp->np_updates[NET_PLAYER_NUM(pl)].seq );
 572
 573         packet_size += data_size;
 574
 575         // copy to the outgoing data
 576         memcpy(data_out, data, packet_size);
 577
 578         return packet_size;
 579 }
 580
 581 // unpack information for a client , return bytes processed
 582 int multi_oo_unpack_client_data(net_player *pl, ubyte *data)
 583 {
 584         ubyte in_flags;
 585         ship *shipp;
 586         int offset = 0;
 587
 588         memcpy(&in_flags, data, sizeof(ubyte));
 589         offset++;
 590
 591         // get the player ship
 592         shipp = NULL;
 593         if((pl->player->objnum >= 0) && (Objects[pl->player->objnum].type == OBJ_SHIP) && (Objects[pl->player->objnum].instance >= 0)){
 594                 shipp = &Ships[Objects[pl->player->objnum].instance];
 595         }
 596
 597         // if we have a valid netplayer pointer
 598         if((pl != NULL) && !(pl->flags & NETINFO_FLAG_RESPAWNING) && !(pl->flags & NETINFO_FLAG_LIMBO)){
 599                 // primary fired
 600                 pl->player->ci.fire_primary_count = 0;
 601
 602                 // secondary fired
 603                 pl->player->ci.fire_secondary_count = 0;
 604                 if ( in_flags & OOC_FIRE_SECONDARY ){
 605                         pl->player->ci.fire_secondary_count = 1;
 606                 }
 607
 608                 // countermeasure fired
 609                 pl->player->ci.fire_countermeasure_count = 0;
 610
 611                 // set up aspect locking information
 612                 pl->player->locking_on_center = 0;
 613                 if ( in_flags & OOC_LOCKING_ON_CENTER ){
 614                         pl->player->locking_on_center = 1;
 615                 }
 616
 617                 // trigger down, bank info
 618                 if(shipp != NULL){
 619                         if(in_flags & OOC_TRIGGER_DOWN){
 620                                 shipp->flags |= SF_TRIGGER_DOWN;
 621                         } else {
 622                                 shipp->flags &= ~SF_TRIGGER_DOWN;
 623                         }
 624
 625                         if(in_flags & OOC_PRIMARY_BANK){
 626                                 shipp->weapons.current_primary_bank = 1;
 627                         } else {
 628                                 shipp->weapons.current_primary_bank = 0;
 629                         }
 630
 631                         // linked or not
 632                         shipp->flags &= ~SF_PRIMARY_LINKED;
 633                         if(in_flags & OOC_PRIMARY_LINKED){
 634                                 shipp->flags |= SF_PRIMARY_LINKED;
 635                         }
 636                 }
 637
 638                 // other locking information
 639                 if((shipp != NULL) && (shipp->ai_index != -1)){
 640                         Ai_info[shipp->ai_index].current_target_is_locked = ( in_flags & OOC_TARGET_LOCKED) ? 1 : 0;
 641                         if      ( in_flags & OOC_TARGET_SEEK_LOCK ) {
 642                                 Ai_info[shipp->ai_index].ai_flags |= AIF_SEEK_LOCK;
 643                         } else {
 644                                 Ai_info[shipp->ai_index].ai_flags &= ~AIF_SEEK_LOCK;
 645                         }
 646                 }
 647         }
 648
 649         // client targeting information
 650         ushort tnet_sig;
 651         char t_subsys,l_subsys;
 652         object *tobj;
 653
 654         // get the data
 655         GET_USHORT(tnet_sig);
 656         GET_DATA(t_subsys);
 657         GET_DATA(l_subsys);
 658
 659         // try and find the targeted object
 660         tobj = NULL;
 661         if(tnet_sig != 0){
 662                 tobj = multi_get_network_object( tnet_sig );
 663         }
 664         // maybe fill in targeted object values
 665         if((tobj != NULL) && (pl != NULL) && (pl->player->objnum != -1)){
 666                 // assign the target object
 667                 if(Objects[pl->player->objnum].type == OBJ_SHIP){
 668                         Ai_info[Ships[Objects[pl->player->objnum].instance].ai_index].target_objnum = OBJ_INDEX(tobj);
 669                 }
 670                 pl->s_info.target_objnum = OBJ_INDEX(tobj);
 671
 672                 // assign subsystems if possible
 673                 if(Objects[pl->player->objnum].type == OBJ_SHIP){
 674                         Ai_info[Ships[Objects[pl->player->objnum].instance].ai_index].targeted_subsys = NULL;
 675                         if((t_subsys != -1) && (tobj->type == OBJ_SHIP)){
 676                                 Ai_info[Ships[Objects[pl->player->objnum].instance].ai_index].targeted_subsys = ship_get_indexed_subsys( &Ships[tobj->instance], t_subsys);
 677                         }
 678                 }
 679
 680                 pl->player->locking_subsys = NULL;
 681                 if(Objects[pl->player->objnum].type == OBJ_SHIP){
 682                         if((l_subsys != -1) && (tobj->type == OBJ_SHIP)){
 683                                 pl->player->locking_subsys = ship_get_indexed_subsys( &Ships[tobj->instance], l_subsys);
 684                         }
 685                 }
 686         }
 687
 688         return offset;
 689 }
 690
 691 // unpack the object data, return bytes processed
 692 #define UNPACK_PERCENT(v)                                       { ubyte temp_byte; memcpy(&temp_byte, data + offset, sizeof(ubyte)); v = (float)temp_byte / 255.0f; offset++;}
 693 int multi_oo_unpack_data(net_player *pl, ubyte *data)
 694 {
 695         int offset = 0;
 696         object *pobjp;
 697         ushort net_sig = 0;
 698         ubyte data_size, oo_flags;
 699         ubyte seq_num;
 700         char percent;
 701         float fpct;
 702         ship *shipp;
 703         ship_info *sip;
 704
 705         // add the object's net signature, type and oo_flags
 706         if(!(Net_player->flags & NETINFO_FLAG_AM_MASTER)){
 707                 GET_USHORT( net_sig );
 708                 GET_DATA( oo_flags );
 709         }
 710         // clients always pos and orient stuff only
 711         else {
 712                 oo_flags = (OO_POS_NEW | OO_ORIENT_NEW);
 713         }
 714         GET_DATA( data_size );
 715         GET_DATA( seq_num );
 716
 717         // try and find the object
 718         if(!(Net_player->flags & NETINFO_FLAG_AM_MASTER)){
 719                 pobjp = multi_get_network_object(net_sig);
 720         } else {
 721                 if((pl != NULL) && (pl->player->objnum != -1)){
 722                         pobjp = &Objects[pl->player->objnum];
 723                 } else {
 724                         pobjp = NULL;
 725                 }
 726         }
 727
 728         // if we can't find the object, set pointer to bogus object to continue reading the data
 729         // ignore out of sequence packets here as well
 730         if ( (pobjp == NULL) || (pobjp->type != OBJ_SHIP) || (pobjp->instance < 0) || (pobjp->instance >= MAX_SHIPS) || (Ships[pobjp->instance].ship_info_index < 0) || (Ships[pobjp->instance].ship_info_index >= Num_ship_types)){
 731                 offset += data_size;
 732                 return offset;
 733         }
 734
 735         // ship pointer
 736         shipp = &Ships[pobjp->instance];
 737         sip = &Ship_info[shipp->ship_info_index];
 738
 739         // ---------------------------------------------------------------------------------------------------------------
 740         // CRITICAL OBJECT UPDATE SHIZ
 741         // ---------------------------------------------------------------------------------------------------------------
 742
 743         // if the packet is out of order
 744         if(seq_num < shipp->np_updates[NET_PLAYER_NUM(pl)].seq){
 745                 // non-wraparound case
 746                 if((shipp->np_updates[NET_PLAYER_NUM(pl)].seq - seq_num) <= 100){
 747                         offset += data_size;
 748                         return offset;
 749                 }
 750         }
 751
 752         // if this is from a player, read his button info
 753         if(Net_player->flags & NETINFO_FLAG_AM_MASTER){
 754                 offset += multi_oo_unpack_client_data(pl, data + offset);
 755         }
 756
 757         // new info
 758         vector new_pos = pobjp->pos;
 759         physics_info new_phys_info = pobjp->phys_info;
 760         matrix new_orient = pobjp->orient;
 761
 762         // position
 763         if ( oo_flags & OO_POS_NEW ) {
 764                 // AVERAGE TIME BETWEEN PACKETS FOR THIS SHIP
 765                 // store this latest time stamp
 766                 if(oo_arrive_time_count[shipp - Ships] == 5){
 767                         memmove(&oo_arrive_time[shipp - Ships][0], &oo_arrive_time[shipp - Ships][1], sizeof(float) * 4);
 768                         oo_arrive_time[shipp - Ships][4] = f2fl(Missiontime);
 769                 } else {
 770                         oo_arrive_time[shipp - Ships][oo_arrive_time_count[shipp - Ships]++] = f2fl(Missiontime);
 771                 }
 772                 // if we've got 5 elements calculate the average
 773                 if(oo_arrive_time_count[shipp - Ships] == 5){
 774                         int idx;
 775                         oo_arrive_time_avg_diff[shipp - Ships] = 0.0f;
 776                         for(idx=0; idx<4; idx++){
 777                                 oo_arrive_time_avg_diff[shipp - Ships] += oo_arrive_time[shipp - Ships][idx + 1] - oo_arrive_time[shipp - Ships][idx];
 778                         }
 779                         oo_arrive_time_avg_diff[shipp - Ships] /= 5.0f;
 780                 }
 781                 // next expected arrival time
 782                 oo_arrive_time_next[shipp - Ships] = 0.0f;
 783
 784                 // int r1 = multi_pack_unpack_position( 0, data + offset, &pobjp->pos );
 785                 int r1 = multi_pack_unpack_position( 0, data + offset, &new_pos );
 786                 offset += r1;
 787
 788                 // int r3 = multi_pack_unpack_vel( 0, data + offset, &pobjp->orient, &pobjp->pos, &pobjp->phys_info );
 789                 int r3 = multi_pack_unpack_vel( 0, data + offset, &pobjp->orient, &new_pos, &new_phys_info );
 790                 offset += r3;
 791
 792                 // bash desired vel to be velocity
 793                 // pobjp->phys_info.desired_vel = pobjp->phys_info.vel;
 794         }
 795
 796         // orientation
 797         if ( oo_flags & OO_ORIENT_NEW ) {
 798                 // int r2 = multi_pack_unpack_orient( 0, data + offset, &pobjp->orient );
 799                 int r2 = multi_pack_unpack_orient( 0, data + offset, &new_orient );
 800                 offset += r2;
 801
 802                 // int r5 = multi_pack_unpack_rotvel( 0, data + offset, &pobjp->orient, &pobjp->pos, &pobjp->phys_info );
 803                 int r5 = multi_pack_unpack_rotvel( 0, data + offset, &new_orient, &new_pos, &new_phys_info );
 804                 offset += r5;
 805
 806                 // bash desired rotvel to be 0
 807                 // pobjp->phys_info.desired_rotvel = vmd_zero_vector;
 808         }
 809
 810         // forward thrust
 811         percent = (char)(pobjp->phys_info.forward_thrust * 100.0f);
 812         SDL_assert( percent <= 100 );
 813         GET_DATA(percent);
 814
 815         // now stuff all this new info
 816         if(oo_flags & OO_POS_NEW){
 817                 // if we're past the position update tolerance, bash.
 818                 // this should cause our 2 interpolation splines to be exactly the same. so we'll see a jump,
 819                 // but it should be nice and smooth immediately afterwards
 820                 if(vm_vec_dist(&new_pos, &pobjp->pos) > OO_POS_UPDATE_TOLERANCE){
 821                         pobjp->pos = new_pos;
 822                 }
 823
 824                 // recalc any interpolation info
 825                 if(oo_interp_count[shipp - Ships] < 2){
 826                         oo_interp_points[shipp - Ships][oo_interp_count[shipp - Ships]++] = new_pos;
 827                 } else {
 828                         oo_interp_points[shipp - Ships][0] = oo_interp_points[shipp - Ships][1];
 829                         oo_interp_points[shipp - Ships][1] = new_pos;
 830
 831                         multi_oo_calc_interp_splines(shipp - Ships, &pobjp->pos, &pobjp->orient, &pobjp->phys_info, &new_pos, &new_orient, &new_phys_info);
 832                 }
 833
 834                 pobjp->phys_info.vel = new_phys_info.vel;
 835                 pobjp->phys_info.desired_vel = new_phys_info.vel;
 836         }
 837
 838         // we'll just sim rotation straight. it works fine.
 839         if(oo_flags & OO_ORIENT_NEW){
 840                 pobjp->orient = new_orient;
 841                 pobjp->phys_info.rotvel = new_phys_info.rotvel;
 842                 // pobjp->phys_info.desired_rotvel = vmd_zero_vector;
 843                 pobjp->phys_info.desired_rotvel = new_phys_info.rotvel;
 844         }
 845
 846
 847         // ---------------------------------------------------------------------------------------------------------------
 848         // ANYTHING BELOW HERE WORKS FINE - nothing here which causes jumpiness or bandwidth problems :) WHEEEEE!
 849         // ---------------------------------------------------------------------------------------------------------------
 850
 851         // hull info
 852         if ( oo_flags & OO_HULL_NEW ){
 853                 UNPACK_PERCENT(fpct);
 854                 pobjp->hull_strength = fpct * Ship_info[Ships[pobjp->instance].ship_info_index].initial_hull_strength;
 855
 856                 float shield_0, shield_1, shield_2, shield_3;
 857
 858                 // unpack the 4 quadrants
 859                 UNPACK_PERCENT(shield_0);
 860                 UNPACK_PERCENT(shield_1);
 861                 UNPACK_PERCENT(shield_2);
 862                 UNPACK_PERCENT(shield_3);
 863
 864                 pobjp->shields[0] = (shield_0 * Ship_info[Ships[pobjp->instance].ship_info_index].shields) / MAX_SHIELD_SECTIONS;
 865                 pobjp->shields[1] = (shield_1 * Ship_info[Ships[pobjp->instance].ship_info_index].shields) / MAX_SHIELD_SECTIONS;
 866                 pobjp->shields[2] = (shield_2 * Ship_info[Ships[pobjp->instance].ship_info_index].shields) / MAX_SHIELD_SECTIONS;
 867                 pobjp->shields[3] = (shield_3 * Ship_info[Ships[pobjp->instance].ship_info_index].shields) / MAX_SHIELD_SECTIONS;
 868         }
 869
 870         if ( oo_flags & OO_SUBSYSTEMS_AND_AI_NEW ) {
 871                 ubyte n_subsystems, subsys_count;
 872                 float subsystem_percent[MAX_MODEL_SUBSYSTEMS];
 873                 ship_subsys *subsysp;
 874                 float val;
 875                 int i;
 876
 877                 SDL_zero(subsystem_percent);
 878
 879                 // get the data for the subsystems
 880                 GET_DATA( n_subsystems );
 881                 for ( i = 0; i < n_subsystems; i++ ){
 882                         UNPACK_PERCENT( subsystem_percent[i] );
 883                 }
 884
 885                 // fill in the subsystem data
 886                 subsys_count = 0;
 887                 for ( subsysp = GET_FIRST(&shipp->subsys_list); subsysp != END_OF_LIST(&shipp->subsys_list); subsysp = GET_NEXT(subsysp) ) {
 888                         int subsys_type;
 889
 890                         val = subsystem_percent[subsys_count] * subsysp->system_info->max_hits;
 891                         subsysp->current_hits = val;
 892
 893                         // add the value just generated (it was zero'ed above) into the array of generic system types
 894                         subsys_type = subsysp->system_info->type;                                       // this is the generic type of subsystem
 895                         SDL_assert ( subsys_type < SUBSYSTEM_MAX );
 896                         shipp->subsys_info[subsys_type].current_hits += val;
 897                         subsys_count++;
 898
 899                         // if we've reached max subsystems for some reason, bail out
 900                         if(subsys_count >= n_subsystems){
 901                                 break;
 902                         }
 903                 }
 904
 905                 // recalculate all ship subsystems
 906                 ship_recalc_subsys_strength( shipp );
 907
 908                 // ai mode info
 909                 ubyte umode;
 910                 short submode;
 911                 ushort target_signature;
 912                 object *target_objp;
 913
 914                 GET_DATA( umode );
 915                 GET_SHORT( submode );
 916                 GET_USHORT( target_signature );
 917
 918                 if(shipp->ai_index >= 0){
 919                         Ai_info[shipp->ai_index].mode = umode;
 920                         Ai_info[shipp->ai_index].submode = submode;
 921
 922                         // set this guys target objnum
 923                         target_objp = multi_get_network_object( target_signature );
 924                         if ( target_objp == NULL ){
 925                                 Ai_info[shipp->ai_index].target_objnum = -1;
 926                         } else {
 927                                 Ai_info[shipp->ai_index].target_objnum = OBJ_INDEX(target_objp);
 928                         }
 929                 }
 930
 931                 // primary weapon energy
 932                 float weapon_energy_pct;
 933                 UNPACK_PERCENT(weapon_energy_pct);
 934                 shipp->weapon_energy = sip->max_weapon_reserve * weapon_energy_pct;
 935         }
 936
 937         // support ship extra info
 938         ubyte support_extra;
 939         GET_DATA(support_extra);
 940         if(support_extra){
 941                 ushort dock_sig;
 942                 int ai_flags, ai_mode, ai_submode;
 943
 944                 // flag
 945                 GET_INT(ai_flags);
 946                 GET_INT(ai_mode);
 947                 GET_INT(ai_submode);
 948                 GET_USHORT(dock_sig);
 949
 950                 // valid ship?
 951                 if((shipp != NULL) && (shipp->ai_index >= 0) && (shipp->ai_index < MAX_AI_INFO)){
 952                         Ai_info[shipp->ai_index].ai_flags = ai_flags;
 953                         Ai_info[shipp->ai_index].mode = ai_mode;
 954                         Ai_info[shipp->ai_index].submode = ai_submode;
 955
 956                         object *objp = multi_get_network_object( dock_sig );
 957                         if(objp != NULL){
 958                                 Ai_info[shipp->ai_index].dock_objnum = OBJ_INDEX(objp);
 959                         }
 960                 }
 961         }
 962
 963         // afterburner info
 964         if(oo_flags & OO_AFTERBURNER_NEW){
 965                 // maybe turn them on
 966                 if(!(pobjp->phys_info.flags & PF_AFTERBURNER_ON)){
 967                         afterburners_start(pobjp);
 968                 }
 969         } else {
 970                 // maybe turn them off
 971                 if(pobjp->phys_info.flags & PF_AFTERBURNER_ON){
 972                         afterburners_stop(pobjp);
 973                 }
 974         }
 975
 976         // primary info (only clients care about this)
 977         if( !MULTIPLAYER_MASTER && (shipp != NULL) ){
 978                 // what bank
 979                 if(oo_flags & OO_PRIMARY_BANK){
 980                         shipp->weapons.current_primary_bank = 1;
 981                 } else {
 982                         shipp->weapons.current_primary_bank = 0;
 983                 }
 984
 985                 // linked or not
 986                 shipp->flags &= ~SF_PRIMARY_LINKED;
 987                 if(oo_flags & OO_PRIMARY_LINKED){
 988                         shipp->flags |= SF_PRIMARY_LINKED;
 989                 }
 990
 991                 // trigger down or not - server doesn't care about this. he'll get it from clients anyway
 992                 shipp->flags &= ~SF_TRIGGER_DOWN;
 993                 if(oo_flags & OO_TRIGGER_DOWN){
 994                         shipp->flags |= SF_TRIGGER_DOWN;
 995                 }
 996         }
 997
 998         // if we're the multiplayer server, set eye position and orient
 999         if(MULTIPLAYER_MASTER && (pl != NULL) && (pobjp != NULL)){
1000                 pl->s_info.eye_pos = pobjp->pos;
1001                 pl->s_info.eye_orient = pobjp->orient;
1002         }
1003
1004         // update the sequence #
1005         shipp->np_updates[NET_PLAYER_NUM(pl)].seq = seq_num;
1006
1007         // flag the object as just updated
1008         // pobjp->flags |= OF_JUST_UPDATED;
1009
1010         return offset;
1011 }
1012
1013 // reset the timestamp appropriately for the passed in object
1014 void multi_oo_reset_timestamp(net_player *pl, object *objp, int range, int in_cone)
1015 {
1016         int stamp = 0;
1017
1018         // if this is the guy's target,
1019         if((pl->s_info.target_objnum != -1) && (pl->s_info.target_objnum == OBJ_INDEX(objp))){
1020                 stamp = Multi_oo_target_update_times[pl->p_info.options.obj_update_level];
1021         } else {
1022                 // reset the timestamp appropriately
1023                 if(in_cone){
1024                         // base it upon range
1025                         switch(range){
1026                         case OO_NEAR:
1027                                 stamp = Multi_oo_front_near_update_times[pl->p_info.options.obj_update_level];
1028                                 break;
1029
1030                         case OO_MIDRANGE:
1031                                 stamp = Multi_oo_front_medium_update_times[pl->p_info.options.obj_update_level];
1032                                 break;
1033
1034                         case OO_FAR:
1035                                 stamp = Multi_oo_front_far_update_times[pl->p_info.options.obj_update_level];
1036                                 break;
1037                         }
1038                 } else {
1039                         // base it upon range
1040                         switch(range){
1041                         case OO_NEAR:
1042                                 stamp = Multi_oo_rear_near_update_times[pl->p_info.options.obj_update_level];
1043                                 break;
1044
1045                         case OO_MIDRANGE:
1046                                 stamp = Multi_oo_rear_medium_update_times[pl->p_info.options.obj_update_level];
1047                                 break;
1048
1049                         case OO_FAR:
1050                                 stamp = Multi_oo_rear_far_update_times[pl->p_info.options.obj_update_level];
1051                                 break;
1052                         }
1053                 }
1054         }
1055
1056         // reset the timestamp for this object
1057         if(objp->type == OBJ_SHIP){
1058                 Ships[objp->instance].np_updates[NET_PLAYER_NUM(pl)].update_stamp = timestamp(stamp);
1059         }
1060 }
1061
1062 // reset the timestamp appropriately for the passed in object
1063 void multi_oo_reset_status_timestamp(object *objp, int player_index)
1064 {
1065         Ships[objp->instance].np_updates[player_index].status_update_stamp = timestamp(OO_HULL_SHIELD_TIME);
1066 }
1067
1068 // reset the timestamp appropriately for the passed in object
1069 void multi_oo_reset_subsys_timestamp(object *objp, int player_index)
1070 {
1071         Ships[objp->instance].np_updates[player_index].subsys_update_stamp = timestamp(OO_SUBSYS_TIME);
1072 }
1073
1074 // determine what needs to get sent for this player regarding the passed object, and when
1075 int multi_oo_maybe_update(net_player *pl, object *obj, ubyte *data)
1076 {
1077         ubyte oo_flags;
1078         int stamp;
1079         int player_index;
1080         vector player_eye;
1081         vector obj_dot;
1082         float eye_dot, dist;
1083         int in_cone;
1084         int range;
1085         ship *shipp;
1086         ship_info *sip;
1087         ushort cur_pos_chksum = 0;
1088         ushort cur_orient_chksum = 0;
1089
1090         // if the timestamp has elapsed for this guy, send stuff
1091         player_index = NET_PLAYER_INDEX(pl);
1092         if(!(player_index >= 0) || !(player_index < MAX_PLAYERS)){
1093                 return 0;
1094         }
1095
1096         // determine what the timestamp is for this object
1097         if(obj->type == OBJ_SHIP){
1098                 stamp = Ships[obj->instance].np_updates[NET_PLAYER_NUM(pl)].update_stamp;
1099         } else {
1100                 return 0;
1101         }
1102
1103         // stamp hasn't popped yet
1104         if((stamp != -1) && !timestamp_elapsed_safe(stamp, OO_MAX_TIMESTAMP)){
1105                 return 0;
1106         }
1107
1108         // if we're supposed to update this guy
1109
1110         // get the ship pointer
1111         shipp = &Ships[obj->instance];
1112
1113         // get ship info pointer
1114         sip = NULL;
1115         if(shipp->ship_info_index >= 0){
1116                 sip = &Ship_info[shipp->ship_info_index];
1117         }
1118
1119         // check dot products
1120         player_eye = pl->s_info.eye_orient.v.fvec;
1121         vm_vec_sub(&obj_dot, &obj->pos, &pl->s_info.eye_pos);
1122         vm_vec_normalize(&obj_dot);
1123         eye_dot = vm_vec_dot(&obj_dot, &player_eye);
1124         in_cone = (eye_dot >= OO_VIEW_CONE_DOT) ? 1 : 0;
1125
1126         // determine distance (near, medium, far)
1127         vm_vec_sub(&obj_dot, &obj->pos, &pl->s_info.eye_pos);
1128         dist = vm_vec_mag(&obj_dot);
1129         if(dist < OO_NEAR_DIST){
1130                 range = OO_NEAR;
1131         } else if(dist < OO_MIDRANGE_DIST){
1132                 range = OO_MIDRANGE;
1133         } else {
1134                 range = OO_FAR;
1135         }
1136
1137         // reset the timestamp for the next update for this guy
1138         multi_oo_reset_timestamp(pl, obj, range, in_cone);
1139
1140         // base oo_flags
1141         oo_flags = OO_POS_NEW | OO_ORIENT_NEW;
1142
1143         // if its a small ship, add weapon link info
1144         if((sip != NULL) && (sip->flags & (SIF_FIGHTER | SIF_BOMBER | SIF_STEALTH))){
1145                 // primary bank 0 or 1
1146                 if(shipp->weapons.current_primary_bank > 0){
1147                         oo_flags |= OO_PRIMARY_BANK;
1148                 }
1149
1150                 // linked or not
1151                 if(shipp->flags & SF_PRIMARY_LINKED){
1152                         oo_flags |= OO_PRIMARY_LINKED;
1153                 }
1154
1155                 // trigger down or not
1156                 if(shipp->flags & SF_TRIGGER_DOWN){
1157                         oo_flags |= OO_TRIGGER_DOWN;
1158                 }
1159         }
1160
1161         // if the object's hull/shield timestamp has expired
1162         if((Ships[obj->instance].np_updates[player_index].status_update_stamp == -1) || timestamp_elapsed_safe(Ships[obj->instance].np_updates[player_index].status_update_stamp, OO_MAX_TIMESTAMP)){
1163                 oo_flags |= (OO_HULL_NEW);
1164
1165                 // reset the timestamp
1166                 multi_oo_reset_status_timestamp(obj, player_index);
1167         }
1168
1169         // if the object's hull/shield timestamp has expired
1170         if((Ships[obj->instance].np_updates[player_index].subsys_update_stamp == -1) || timestamp_elapsed_safe(Ships[obj->instance].np_updates[player_index].subsys_update_stamp, OO_MAX_TIMESTAMP)){
1171                 oo_flags |= OO_SUBSYSTEMS_AND_AI_NEW;
1172
1173                 // reset the timestamp
1174                 multi_oo_reset_subsys_timestamp(obj, player_index);
1175         }
1176
1177         // add info for a targeted object
1178         if((pl->s_info.target_objnum != -1) && (OBJ_INDEX(obj) == pl->s_info.target_objnum)){
1179                 oo_flags |= (OO_POS_NEW | OO_ORIENT_NEW | OO_HULL_NEW);
1180         }
1181         // all other cases
1182         else {
1183                 // add info which is contingent upon being "in front"
1184                 if(in_cone){
1185                         oo_flags |= OO_ORIENT_NEW;
1186                 }
1187         }
1188
1189         // get current position and orient checksums
1190         cur_pos_chksum = cf_add_chksum_short(cur_pos_chksum, (char*)(&obj->pos), sizeof(vector));
1191         cur_orient_chksum = cf_add_chksum_short(cur_orient_chksum, (char*)(&obj->orient), sizeof(matrix));
1192
1193         // if position or orientation haven't changed
1194         if((shipp->np_updates[player_index].pos_chksum != 0) && (shipp->np_updates[player_index].pos_chksum == cur_pos_chksum)){
1195                 // if we otherwise would have been sending it, keep track of it (debug only)
1196 #ifndef NDEBUG
1197                 if(oo_flags & OO_POS_NEW){
1198                         multi_rate_add(player_index, "skp_p", OO_POS_RET_SIZE + OO_VEL_RET_SIZE);
1199                 }
1200 #endif
1201                 oo_flags &= ~(OO_POS_NEW);
1202         }
1203         if((shipp->np_updates[player_index].orient_chksum != 0) && (shipp->np_updates[player_index].orient_chksum == cur_orient_chksum)){
1204                 // if we otherwise would have been sending it, keep track of it (debug only)
1205 #ifndef NDEBUG
1206                 if(oo_flags & OO_ORIENT_NEW){
1207                         multi_rate_add(player_index, "skp_o", OO_ORIENT_RET_SIZE + OO_ROTVEL_RET_SIZE);
1208                 }
1209 #endif
1210                 oo_flags &= ~(OO_ORIENT_NEW);
1211         }
1212         shipp->np_updates[player_index].pos_chksum = cur_pos_chksum;
1213         shipp->np_updates[player_index].orient_chksum = cur_orient_chksum;
1214
1215         // pack stuff only if we have to
1216         int packed = multi_oo_pack_data(pl, obj, oo_flags ,data);
1217
1218         // increment sequence #
1219         Ships[obj->instance].np_updates[NET_PLAYER_NUM(pl)].seq++;
1220
1221         // bytes packed
1222         return packed;
1223 }
1224
1225 // process all other objects for this player
1226 void multi_oo_process_all(net_player *pl)
1227 {
1228         ubyte data[MAX_PACKET_SIZE];
1229         ubyte data_add[MAX_PACKET_SIZE];
1230         ubyte stop;
1231         int add_size;
1232         int packet_size = 0;
1233         int idx;
1234
1235         object *moveup;
1236
1237         // if the player has an invalid objnum..
1238         if(pl->player->objnum < 0){
1239                 return;
1240         }
1241
1242         object *targ_obj;
1243
1244         // build the list of ships to check against
1245         multi_oo_build_ship_list(pl);
1246
1247         // do nothing if he has no object targeted, or if he has a weapon targeted
1248         if((pl->s_info.target_objnum != -1) && (Objects[pl->s_info.target_objnum].type == OBJ_SHIP)){
1249                 // build the header
1250                 BUILD_HEADER(OBJECT_UPDATE);
1251
1252                 // get a pointer to the object
1253                 targ_obj = &Objects[pl->s_info.target_objnum];
1254
1255                 // run through the maybe_update function
1256                 add_size = multi_oo_maybe_update(pl, targ_obj, data_add);
1257
1258                 // copy in any relevant data
1259                 if(add_size){
1260                         stop = 0xff;
1261                         multi_rate_add(NET_PLAYER_NUM(pl), "stp", 1);
1262                         ADD_DATA(stop);
1263
1264                         memcpy(data + packet_size, data_add, add_size);
1265                         packet_size += add_size;
1266                 }
1267         } else {
1268                 // just build the header for the rest of the function
1269                 BUILD_HEADER(OBJECT_UPDATE);
1270         }
1271
1272         idx = 0;
1273         while((OO_ship_index[idx] >= 0) && (idx < MAX_SHIPS)){
1274                 // if this guy is over his datarate limit, do nothing
1275                 if(multi_oo_rate_exceeded(pl)){
1276                         nprintf(("Network","Capping client\n"));
1277                         idx++;
1278
1279                         continue;
1280                 }
1281
1282                 // get the object
1283                 moveup = &Objects[Ships[OO_ship_index[idx]].objnum];
1284
1285                 // maybe send some info
1286                 add_size = multi_oo_maybe_update(pl, moveup, data_add);
1287
1288                 // if this data is too much for the packet, send off what we currently have and start over
1289                 if(packet_size + add_size > OO_MAX_SIZE){
1290                         stop = 0x00;
1291                         multi_rate_add(NET_PLAYER_NUM(pl), "stp", 1);
1292                         ADD_DATA(stop);
1293
1294                         multi_io_send(pl, data, packet_size);
1295                         pl->s_info.rate_bytes += packet_size + UDP_HEADER_SIZE;
1296
1297                         BUILD_HEADER(OBJECT_UPDATE);
1298                 }
1299
1300                 if(add_size){
1301                         stop = 0xff;
1302                         multi_rate_add(NET_PLAYER_NUM(pl), "stp", 1);
1303                         ADD_DATA(stop);
1304
1305                         // copy in the data
1306                         memcpy(data + packet_size,data_add,add_size);
1307                         packet_size += add_size;
1308                 }
1309
1310                 // next ship
1311                 idx++;
1312         }
1313
1314         // if we have anything more than 3 byte in the packet, send the last one off
1315         if(packet_size > 3){
1316                 stop = 0x00;
1317                 multi_rate_add(NET_PLAYER_NUM(pl), "stp", 1);
1318                 ADD_DATA(stop);
1319
1320                 multi_io_send(pl, data, packet_size);
1321                 pl->s_info.rate_bytes += packet_size + UDP_HEADER_SIZE;
1322         }
1323 }
1324
1325 // process all object update details for this frame
1326 void multi_oo_process()
1327 {
1328         int idx;
1329
1330         // process each player
1331         for(idx=0; idx<MAX_PLAYERS; idx++){
1332                 if(MULTI_CONNECTED(Net_players[idx]) && !MULTI_STANDALONE(Net_players[idx]) && (Net_player != &Net_players[idx]) /*&& !MULTI_OBSERVER(Net_players[idx])*/ ){
1333                         // now process the rest of the objects
1334                         multi_oo_process_all(&Net_players[idx]);
1335
1336                         // do firing stuff for this player
1337                         if((Net_players[idx].player != NULL) && (Net_players[idx].player->objnum >= 0) && !(Net_players[idx].flags & NETINFO_FLAG_LIMBO) && !(Net_players[idx].flags & NETINFO_FLAG_RESPAWNING)){
1338                                 if((Objects[Net_players[idx].player->objnum].flags & OF_PLAYER_SHIP) && !(Objects[Net_players[idx].player->objnum].flags & OF_SHOULD_BE_DEAD)){
1339                                         obj_player_fire_stuff( &Objects[Net_players[idx].player->objnum], Net_players[idx].player->ci );
1340                                 }
1341                         }
1342                 }
1343         }
1344 }
1345
1346 // process incoming object update data
1347 void multi_oo_process_update(ubyte *data, header *hinfo)
1348 {
1349         ubyte stop;
1350         int player_index;
1351         int offset = HEADER_LENGTH;
1352         net_player *pl = NULL;
1353
1354         // if this is processed on the server, its a client object update packet
1355         if(Net_player->flags & NETINFO_FLAG_AM_MASTER){
1356                 // determine what player this came from
1357                 player_index = find_player_id(hinfo->id);
1358                 if(player_index != -1){
1359                         pl = &Net_players[player_index];
1360                 } else {
1361                         pl = NULL;
1362                 }
1363         }
1364         // otherwise its a "regular" object update packet on a client from the server. use "myself" as the reference player
1365         else {
1366                 pl = Net_player;
1367         }
1368
1369         GET_DATA(stop);
1370
1371         while(stop == 0xff){
1372                 // process the data
1373                 offset += multi_oo_unpack_data(pl, data + offset);
1374
1375                 GET_DATA(stop);
1376         }
1377         PACKET_SET_SIZE();
1378 }
1379
1380 // initialize all object update timestamps (call whenever entering gameplay state)
1381 void multi_oo_gameplay_init()
1382 {
1383         int cur, s_idx, idx;
1384         //ship_obj *so;
1385         ship *shipp;
1386         /*
1387         int num_ships = ship_get_num_ships();
1388
1389         if(num_ships <= 0){
1390                 return;
1391         }
1392         split = 3000 / num_ships;
1393         */
1394         //split = 1;
1395         //split = 150;
1396
1397         // server should setup initial update timestamps
1398         // stagger initial updates over 3 seconds or so
1399         cur = 0;
1400         //for ( so = GET_FIRST(&Ship_obj_list); so != END_OF_LIST(&Ship_obj_list); so = GET_NEXT(so) ) {
1401                 //if(Objects[so->objnum].type == OBJ_SHIP){
1402         for(s_idx=0; s_idx<MAX_SHIPS; s_idx++){
1403                         shipp = &Ships[s_idx];
1404
1405                         // update the timestamps
1406                         for(idx=0;idx<MAX_PLAYERS;idx++){
1407                                 shipp->np_updates[idx].update_stamp = timestamp(cur);
1408                                 shipp->np_updates[idx].status_update_stamp = timestamp(cur);
1409                                 shipp->np_updates[idx].subsys_update_stamp = timestamp(cur);
1410                                 shipp->np_updates[idx].seq = 0;
1411                                 shipp->np_updates[idx].pos_chksum = 0;
1412                                 shipp->np_updates[idx].orient_chksum = 0;
1413                         }
1414
1415                         oo_arrive_time_count[shipp - Ships] = 0;
1416                         oo_interp_count[shipp - Ships] = 0;
1417
1418                         // increment the time
1419 //                      cur += split;
1420                 }
1421         //}
1422
1423         // reset datarate stamp now
1424         extern int OO_gran;
1425         for(idx=0; idx<MAX_PLAYERS; idx++){
1426                 Net_players[idx].s_info.rate_stamp = timestamp( (int)(1000.0f / (float)OO_gran) );
1427         }
1428 }
1429
1430 // send control info for a client (which is basically a "reverse" object update)
1431 void multi_oo_send_control_info()
1432 {
1433         ubyte data[MAX_PACKET_SIZE], stop;
1434         ubyte data_add[MAX_PACKET_SIZE];
1435         ubyte oo_flags;
1436         int add_size;
1437         int packet_size = 0;
1438
1439         // if I'm dying or my object type is not a ship, bail here
1440         if((Player_obj != NULL) && (Player_ship->flags & SF_DYING)){
1441                 return;
1442         }
1443
1444         // build the header
1445         BUILD_HEADER(OBJECT_UPDATE);
1446
1447         // pos and orient always
1448         oo_flags = (OO_POS_NEW | OO_ORIENT_NEW);
1449
1450         // pack the appropriate info into the data
1451         add_size = multi_oo_pack_data(Net_player, Player_obj, oo_flags, data_add);
1452
1453         // copy in any relevant data
1454         if(add_size){
1455                 stop = 0xff;
1456                 multi_rate_add(NET_PLAYER_NUM(Net_player), "stp", 1);
1457
1458                 ADD_DATA(stop);
1459
1460                 memcpy(data + packet_size, data_add, add_size);
1461                 packet_size += add_size;
1462         }
1463
1464         // add the final stop byte
1465         stop = 0x0;
1466         multi_rate_add(NET_PLAYER_NUM(Net_player), "stp", 1);
1467         ADD_DATA(stop);
1468
1469         // increment sequence #
1470         Player_ship->np_updates[MY_NET_PLAYER_NUM].seq++;
1471
1472         // send to the server
1473         if(Netgame.server != NULL){
1474                 multi_io_send(Net_player, data, packet_size);
1475         }
1476 }
1477
1478 // display any oo info on the hud
1479 void multi_oo_display()
1480 {
1481 #ifndef NDEBUG
1482 #endif
1483 }
1484
1485
1486 // ---------------------------------------------------------------------------------------------------
1487 // DATARATE DEFINES/VARS
1488 //
1489
1490 // low object update datarate limit
1491 #define OO_LIMIT_LOW                            1800
1492 #define OO_LIMIT_MED                            3400
1493
1494 // timestamp for sending control info (movement only - we'll send button info all the time)
1495 #define OO_CIRATE                                       85                                      // 15x a second
1496 int Multi_cirate_stamp                  = -1;                           // timestamp for waiting on control info time
1497 int Multi_cirate_can_send               = 1;                            // if we can send control info this frame
1498
1499 // global max rates
1500 int OO_server_rate = -1;                                                        // max _total_ bandwidth to send to all clients
1501 int OO_client_rate = -1;                                                        // max bandwidth to go to an individual client
1502
1503 // update timestamp for server datarate checking
1504 #define RATE_UPDATE_TIME                1250                            // in ms
1505 int OO_server_rate_stamp = -1;
1506
1507 // bandwidth granularity
1508 int OO_gran = 1;
1509 DCF(oog, "")
1510 {
1511         dc_get_arg(ARG_INT);
1512         OO_gran = Dc_arg_int;
1513 }
1514
1515 // process datarate limiting stuff for the server
1516 void multi_oo_server_process();
1517
1518 // process datarate limiting stuff for the client
1519 void multi_oo_client_process();
1520
1521 // update the server datarate
1522 void multi_oo_update_server_rate();
1523
1524
1525 // ---------------------------------------------------------------------------------------------------
1526 // DATARATE FUNCTIONS
1527 //
1528
1529 // process all object update datarate details
1530 void multi_oo_rate_process()
1531 {
1532         // if I have no valid player, drop out here
1533         if(Net_player == NULL){
1534                 return;
1535         }
1536
1537         // if we're not in mission, don't do anything
1538         if(!(Game_mode & GM_IN_MISSION)){
1539                 return;
1540         }
1541
1542         // if I'm the server of a game, process server stuff
1543         if(Net_player->flags & NETINFO_FLAG_AM_MASTER){
1544                 multi_oo_server_process();
1545         }
1546         // otherwise process client-side stuff
1547         else {
1548                 multi_oo_client_process();
1549         }
1550 }
1551
1552 // process datarate limiting stuff for the server
1553 void multi_oo_server_process()
1554 {
1555         int idx;
1556
1557         // go through all players
1558         for(idx=0;idx<MAX_PLAYERS;idx++){
1559                 if(MULTI_CONNECTED(Net_players[idx]) && !MULTI_SERVER(Net_players[idx])){
1560                         // if his timestamp is -1 or has expired, reset it and zero his rate byte count
1561                         if((Net_players[idx].s_info.rate_stamp == -1) || timestamp_elapsed_safe(Net_players[idx].s_info.rate_stamp, OO_MAX_TIMESTAMP) || (abs(timestamp_ticker - Net_players[idx].s_info.rate_stamp) >= (int)(1000.0f / (float)OO_gran)) ){
1562                                 Net_players[idx].s_info.rate_stamp = timestamp( (int)(1000.0f / (float)OO_gran) );
1563                                 Net_players[idx].s_info.rate_bytes = 0;
1564                         }
1565                 }
1566         }
1567
1568         // determine if we should be updating the server datarate
1569         if((OO_server_rate_stamp == -1) || timestamp_elapsed_safe(OO_server_rate_stamp, OO_MAX_TIMESTAMP)){
1570                 // reset the timestamp
1571                 OO_server_rate_stamp = timestamp(RATE_UPDATE_TIME);
1572
1573                 // update the server datarate
1574                 multi_oo_update_server_rate();
1575
1576                 // nprintf(("Network","UPDATING SERVER DATARATE\n"));
1577         }
1578 }
1579
1580 // process datarate limiting stuff for the client
1581 void multi_oo_client_process()
1582 {
1583         // if the timestamp is -1 or has elapsed, reset it
1584         if((Multi_cirate_stamp == -1) || timestamp_elapsed_safe(Multi_cirate_stamp, OO_CIRATE)){
1585                 Multi_cirate_can_send = 1;
1586                 Multi_cirate_stamp = timestamp(OO_CIRATE);
1587         }
1588 }
1589
1590
1591 // datarate limiting system for server -------------------------------------
1592
1593 // initialize the rate limiting system for all players
1594 void multi_oo_rate_init_all()
1595 {
1596         int idx;
1597
1598         // if I don't have a net_player, bail here
1599         if(Net_player == NULL){
1600                 return;
1601         }
1602
1603         // if I'm the server of the game
1604         if(Net_player->flags & NETINFO_FLAG_AM_MASTER){
1605                 // go through all players
1606                 for(idx=0;idx<MAX_PLAYERS;idx++){
1607                         if(MULTI_CONNECTED(Net_players[idx])){
1608                                 multi_oo_rate_init(&Net_players[idx]);
1609                         }
1610                 }
1611
1612                 OO_server_rate_stamp = -1;
1613         }
1614         // if i'm the client, initialize my control info datarate stuff
1615         else {
1616                 Multi_cirate_stamp = -1;
1617                 Multi_cirate_can_send = 1;
1618         }
1619 }
1620
1621 // initialize the rate limiting for the passed in player
1622 void multi_oo_rate_init(net_player *pl)
1623 {
1624         // reinitialize his datarate timestamp
1625         pl->s_info.rate_stamp = -1;
1626         pl->s_info.rate_bytes = 0;
1627 }
1628
1629 // if the given net-player has exceeded his datarate limit
1630 int multi_oo_rate_exceeded(net_player *pl)
1631 {
1632         int rate_compare;
1633
1634         // check against the guy's object update level
1635         switch(pl->p_info.options.obj_update_level){
1636         // low update level
1637         case OBJ_UPDATE_LOW:
1638                 // the low object update limit
1639                 rate_compare = OO_LIMIT_LOW;
1640                 break;
1641
1642         // medium update level
1643         case OBJ_UPDATE_MEDIUM:
1644                 // the low object update limit
1645                 rate_compare = OO_LIMIT_MED;
1646                 break;
1647
1648         // high update level - super high datarate (no capping, just intelligent updating)
1649         case OBJ_UPDATE_HIGH:
1650                 rate_compare = 100000000;
1651                 break;
1652
1653         // LAN - no rate max
1654         case OBJ_UPDATE_LAN:
1655                 return 0;
1656
1657         // default level
1658         default:
1659                 Int3();
1660                 rate_compare = OO_LIMIT_LOW;
1661                 break;
1662         }
1663
1664         // if the server global rate PER CLIENT (OO_client_rate) is actually lower
1665         if(OO_client_rate < rate_compare){
1666                 rate_compare = OO_client_rate;
1667         }
1668
1669         // compare his bytes sent against the allowable amount
1670         if(pl->s_info.rate_bytes >= rate_compare){
1671                 return 1;
1672         }
1673
1674         // we're allowed to send
1675         return 0;
1676 }
1677
1678 // if it is ok for me to send a control info (will be ~N times a second)
1679 int multi_oo_cirate_can_send()
1680 {
1681         // if we're allowed to send
1682         if(Multi_cirate_can_send){
1683                 Multi_cirate_can_send = 0;
1684                 return 1;
1685         }
1686
1687         return 0;
1688 }
1689
1690 // dynamically update the server capped bandwidth rate
1691 void multi_oo_update_server_rate()
1692 {
1693         int num_connections;
1694
1695         // bail conditions
1696         if((Net_player == NULL) || !(Net_player->flags & NETINFO_FLAG_AM_MASTER)){
1697                 return;
1698         }
1699
1700         // get the # of connections
1701         num_connections = multi_num_connections();
1702         if(!(Game_mode & GM_STANDALONE_SERVER)){
1703                 num_connections--;
1704         }
1705         // make sure we always pretend there's at least one guy available
1706         if(num_connections <= 0){
1707                 num_connections = 1;
1708         }
1709
1710         // set the data rate
1711         switch(Net_player->p_info.options.obj_update_level){
1712         // LAN update level
1713         case OBJ_UPDATE_LAN:
1714                 // set to something super big so we don't limit anything
1715                 OO_server_rate = 500000000;
1716                 break;
1717
1718         // high update level
1719         case OBJ_UPDATE_HIGH:
1720                 // set to 0 so we don't limit anything
1721                 OO_server_rate = Multi_options_g.datarate_cap;
1722                 break;
1723
1724         // medium update level
1725         case OBJ_UPDATE_MEDIUM:
1726                 // set the rate to be "medium" update level
1727                 OO_server_rate = OO_LIMIT_MED;
1728                 break;
1729
1730         // low update level
1731         case OBJ_UPDATE_LOW:
1732                 // set the rate to be the "low" update level
1733                 OO_server_rate = OO_LIMIT_LOW;
1734                 break;
1735
1736         default:
1737                 Int3();
1738                 return;
1739         }
1740
1741         // set the individual client level
1742         OO_client_rate = (int)(((float)OO_server_rate / (float)OO_gran) / (float)num_connections);
1743 }
1744
1745 // reset all sequencing info (obsolete for new object update stuff)
1746 void multi_oo_reset_sequencing()
1747 {
1748 }
1749
1750 // is this object one which needs to go through the interpolation
1751 int multi_oo_is_interp_object(object *objp)
1752 {
1753         // if not multiplayer, skip it
1754         if(!(Game_mode & GM_MULTIPLAYER)){
1755                 return 0;
1756         }
1757
1758         // if its not a ship, skip it
1759         if(objp->type != OBJ_SHIP){
1760                 return 0;
1761         }
1762
1763         // other bogus cases
1764         if((objp->instance < 0) || (objp->instance >= MAX_SHIPS)){
1765                 return 0;
1766         }
1767
1768         // if I'm a client and this is not me, I need to interp it
1769         if(!MULTIPLAYER_MASTER){
1770                 if(objp != Player_obj){
1771                         return 1;
1772                 } else {
1773                         return 0;
1774                 }
1775         }
1776
1777         // servers only interpolate other player ships
1778         if(!(objp->flags & OF_PLAYER_SHIP)){
1779                 return 0;
1780         }
1781
1782         // here we know its a player ship - is it mine?
1783         if(objp == Player_obj){
1784                 return 0;
1785         }
1786
1787         // interp it
1788         return 1;
1789 }
1790
1791 // interp
1792 void multi_oo_interp(object *objp)
1793 {
1794         // make sure its a valid ship
1795         SDL_assert(Game_mode & GM_MULTIPLAYER);
1796         if(objp->type != OBJ_SHIP){
1797                 return;
1798         }
1799         if((objp->instance < 0) || (objp->instance >= MAX_SHIPS)){
1800                 return;
1801         }
1802
1803         // increment his approx "next" time
1804         oo_arrive_time_next[objp->instance] += flFrametime;
1805
1806         // do stream weapon firing for this ship
1807         SDL_assert(objp != Player_obj);
1808         if(objp != Player_obj){
1809                 ship_fire_primary(objp, 1, 0);
1810         }
1811
1812         // if this ship doesn't have enough data points yet, skip it
1813         if((oo_interp_count[objp->instance] < 2) || (oo_arrive_time_count[objp->instance] < 5)){
1814                 return;
1815         }
1816
1817         // store the magnitude of his velocity
1818         // float vel_mag = vm_vec_mag(&objp->phys_info.vel);
1819
1820         // determine how far along we are (0.0 to 1.0) until we should be getting the next packet
1821         float t = oo_arrive_time_next[objp->instance] / oo_arrive_time_avg_diff[objp->instance];
1822
1823         // gr_set_color_fast(&Color_bright);
1824         // gr_printf(100, 10, "%f\n", t);
1825
1826         // we've overshot. hmm. just keep the sim running I guess
1827         if(t > 1.0f){
1828                 physics_sim(&objp->pos, &objp->orient, &objp->phys_info, flFrametime);
1829                 return;
1830         }
1831
1832         // otherwise, blend the two curves together to get the new point
1833         float u = 0.5f + (t * 0.5f);
1834         vector p_bad, p_good;
1835         oo_interp_splines[objp->instance][0].bez_get_point(&p_bad, u);
1836         oo_interp_splines[objp->instance][1].bez_get_point(&p_good, u);
1837         vm_vec_scale(&p_good, t);
1838         vm_vec_scale(&p_bad, 1.0f - t);
1839         vm_vec_add(&objp->pos, &p_bad, &p_good);
1840
1841         // set new velocity
1842         // vm_vec_sub(&objp->phys_info.vel, &objp->pos, &objp->last_pos);
1843
1844         // run the sim for rotation
1845         physics_sim_rot(&objp->orient, &objp->phys_info, flFrametime);
1846
1847         // blend velocity vectors together with an average weight
1848         /*
1849         vector v_bad, v_good;
1850         oo_interp_splines[objp->instance][0].herm_get_deriv(&v_bad, u, 0);
1851         oo_interp_splines[objp->instance][1].herm_get_deriv(&v_good, u, 0);
1852
1853         // t -= 1.0f;
1854         vm_vec_scale(&v_good, t);
1855         vm_vec_scale(&v_bad, 1.0f - t);
1856         vm_vec_avg(&objp->phys_info.vel, &v_bad, &v_good);
1857
1858         // run the sim
1859         physics_sim(&objp->pos, &objp->orient, &objp->phys_info, flFrametime);
1860         */
1861
1862         /*
1863         vector v_bad, v_good;
1864         oo_interp_splines[objp->instance][0].herm_get_point(&v_bad, u, 0);
1865         oo_interp_splines[objp->instance][1].herm_get_point(&v_good, u, 0);
1866
1867         // t -= 1.0f;
1868         vm_vec_scale(&v_good, t);
1869         vm_vec_scale(&v_bad, 1.0f - t);
1870         vm_vec_avg(&objp->pos, &v_bad, &v_good);
1871
1872         // run the sim
1873         // physics_sim(&objp->pos, &objp->orient, &objp->phys_info, flFrametime);
1874         physics_sim_rot(&objp->orient, &objp->phys_info, flFrametime);
1875         */
1876 }
1877
1878 float oo_error = 0.8f;
1879 DCF(oo_error, "")
1880 {
1881         dc_get_arg(ARG_FLOAT);
1882         oo_error = Dc_arg_float;
1883 }
1884
1885 void multi_oo_calc_interp_splines(int ship_index, vector *cur_pos, matrix *cur_orient, physics_info *cur_phys_info, vector *new_pos, matrix *new_orient, physics_info *new_phys_info)
1886 {
1887         vector a, b, c;
1888         // vector da, db, dc;
1889         matrix m_copy;
1890         physics_info p_copy;
1891         vector *pts[3] = {&a, &b, &c};
1892         // vector *d_pts[3] = {&da, &db, &dc};
1893
1894         // average time between packets
1895         float avg_diff = oo_arrive_time_avg_diff[ship_index];
1896
1897         // would this cause us to rubber-band?
1898         vector v_norm = cur_phys_info->vel;
1899         vector v_dir;
1900         vm_vec_sub(&v_dir, new_pos, cur_pos);
1901         if(!IS_VEC_NULL(&v_norm) && !IS_VEC_NULL(&v_dir)){
1902                 vm_vec_normalize(&v_dir);
1903                 vm_vec_normalize(&v_norm);
1904                 if(vm_vec_dotprod(&v_dir, &v_norm) < 0.0f){
1905                         *new_pos = *cur_pos;
1906                 }
1907         }
1908
1909         // get the spline representing our "bad" movement. its better to be little bit off than to overshoot altogether
1910         a = oo_interp_points[ship_index][0];
1911         b = *cur_pos;
1912         c = *cur_pos;
1913         m_copy = *cur_orient;
1914         p_copy = *cur_phys_info;
1915         physics_sim(&c, &m_copy, &p_copy, avg_diff * oo_error);                 // next point, assuming we followed our current path
1916         oo_interp_splines[ship_index][0].bez_set_points(3, pts);
1917
1918         // get the spline representing where this new point tells us we'd be heading
1919         a = oo_interp_points[ship_index][0];
1920         b = oo_interp_points[ship_index][1];
1921         c = oo_interp_points[ship_index][1];
1922         m_copy = *new_orient;
1923         p_copy = *new_phys_info;
1924         physics_sim(&c, &m_copy, &p_copy, avg_diff);                    // next point, given this new info
1925         oo_interp_splines[ship_index][1].bez_set_points(3, pts);
1926
1927         // get the spline for our "bad" movement
1928         /*
1929         a = oo_interp_points[ship_index][0];
1930         b = *cur_pos;
1931         da = oo_interp_vel[ship_index][0];
1932         db = cur_phys_info->vel;
1933         oo_interp_splines[ship_index][0].herm_set_points(2, pts, d_pts);
1934
1935         // get the spline for our "good" movement
1936         a = oo_interp_points[ship_index][0];
1937         b = oo_interp_points[ship_index][1];
1938         da = oo_interp_vel[ship_index][0];
1939         db = oo_interp_vel[ship_index][1];
1940         oo_interp_splines[ship_index][1].herm_set_points(2, pts, d_pts);
1941         */
1942
1943         // now we've got a spline representing our "new" path and where we would've gone had we been perfect before
1944         // we'll modify our velocity to move along a blend of these splines.
1945 }
1946
1947 #include "alphacolors.h"
1948
1949 void oo_update_time()
1950 {
1951 }
1952
1953 int display_oo_bez = 0;
1954 DCF(bez, "")
1955 {
1956         display_oo_bez = !display_oo_bez;
1957         if(display_oo_bez){
1958                 dc_printf("Showing interp splines");
1959         } else {
1960                 dc_printf("Not showing interp splines");
1961         }
1962 }
1963
1964 void oo_display()
1965 {
1966 /*      int idx;
1967
1968
1969         gr_set_color_fast(&Color_bright);
1970
1971         for(idx=0; idx<MAX_SHIPS; idx++){
1972                 // invalid ship
1973                 if(Ships[idx].objnum < 0){
1974                         continue;
1975                 }
1976
1977                 // time between updates
1978                 if( (oo_arrive_time_count[idx] == 5) && (idx != (Player_ship - Ships)) ){
1979                         gr_printf(20, 40, "avg time between updates : %f", oo_arrive_time_avg_diff[idx]);
1980                 }
1981
1982                 // interpolation splines
1983                 if( (oo_interp_count[idx] == 2) && (display_oo_bez) ){
1984                         oo_interp_splines[idx][0].bez_render(10, &Color_bright_red);                    // bad path
1985                         oo_interp_splines[idx][1].bez_render(10, &Color_bright_green);          // good path
1986                 }
1987         }
1988         */
1989 }
1990