src/io/joy_ff.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 the
   6  * source.
   7  *
   8 */
   9
  10
  11 #include "pstypes.h"
  12 #include "vecmat.h"
  13 #include "osregistry.h"
  14 #include "joy_ff.h"
  15 #include "osapi.h"
  16
  17
  18 static int Joy_ff_enabled = 0;
  19 static int Joy_ff_acquired = 0;
  20 static SDL_Haptic *haptic = NULL;
  21 static int joy_ff_handling_scaler = 0;
  22 static int Joy_ff_directional_hit_effect_enabled = 1;
  23 static int Joy_rumble = 0;
  24 static int Joy_ff_afterburning = 0;
  25
  26 typedef struct {
  27         SDL_HapticEffect eff;
  28         int id;
  29         int loaded;
  30 } haptic_effect_t;
  31
  32 static haptic_effect_t pHitEffect1;
  33 static haptic_effect_t pHitEffect2;
  34 static haptic_effect_t pAfterburn1;
  35 static haptic_effect_t pAfterburn2;
  36 static haptic_effect_t pShootEffect;
  37 static haptic_effect_t pSecShootEffect;
  38 static haptic_effect_t pSpring;
  39 static haptic_effect_t pDock;
  40
  41 static void joy_ff_create_effects();
  42 static int joy_ff_effect_playing(haptic_effect_t *eff);
  43 static void joy_ff_start_effect(haptic_effect_t *eff, const char *name);
  44
  45 extern SDL_Joystick *sdljoy;
  46
  47
  48 int joy_ff_init()
  49 {
  50         int ff_enabled = 0;
  51
  52         ff_enabled = os_config_read_uint("Controls", "EnableJoystickFF", 0);
  53
  54         if ( !ff_enabled || !SDL_JoystickIsHaptic(sdljoy) ) {
  55                 return 0;
  56         }
  57
  58         if (SDL_InitSubSystem(SDL_INIT_HAPTIC) < 0) {
  59                 mprintf(("  ERROR: Unable to initialize haptic subsystem\n"));
  60                 return -1;
  61         }
  62
  63         haptic = SDL_HapticOpenFromJoystick(sdljoy);
  64
  65         if (haptic == NULL) {
  66                 mprintf(("  ERROR: Unable to open haptic joystick\n"));
  67                 SDL_QuitSubSystem(SDL_INIT_HAPTIC);
  68                 return -1;
  69         }
  70
  71         if ( SDL_HapticRumbleSupported(haptic) ) {
  72                 SDL_HapticRumbleInit(haptic);
  73                 Joy_rumble = 1;
  74         }
  75
  76         mprintf(("  Rumble  : %s\n", Joy_rumble ? "Yes" : "No"));
  77         mprintf(("  Axes    : %d\n", SDL_HapticNumAxes(haptic)));
  78         mprintf(("  Max effects     : %d\n", SDL_HapticNumEffects(haptic)));
  79         mprintf(("  Running effects : %d\n", SDL_HapticNumEffectsPlaying(haptic)));
  80
  81         joy_ff_create_effects();
  82
  83         Joy_ff_enabled = 1;
  84         Joy_ff_acquired = 1;
  85
  86         Joy_ff_directional_hit_effect_enabled = os_config_read_uint("Controls", "EnableHitEffect", 1);
  87
  88         return 0;
  89 }
  90
  91 void joy_ff_shutdown()
  92 {
  93         if ( !Joy_ff_enabled ) {
  94                 return;
  95         }
  96
  97         Joy_rumble = 0;
  98
  99         SDL_HapticClose(haptic);
 100         haptic = NULL;
 101
 102         SDL_QuitSubSystem(SDL_INIT_HAPTIC);
 103
 104         Joy_ff_acquired = 0;
 105         Joy_ff_enabled = 0;
 106 }
 107
 108 static void joy_ff_create_effects()
 109 {
 110         // clear all SDL errors
 111         SDL_ClearError();
 112
 113         unsigned int supported = 0;
 114
 115         supported = SDL_HapticQuery(haptic);
 116
 117         if ( !(supported & SDL_HAPTIC_CONSTANT) ) {
 118                 mprintf(("  Constant Force  : not supported\n"));
 119         }
 120
 121         if ( !(supported & SDL_HAPTIC_SINE) ) {
 122                 mprintf(("  Sine Wave       : not supported\n"));
 123         }
 124
 125         if ( !(supported & SDL_HAPTIC_SAWTOOTHDOWN) ) {
 126                 mprintf(("  Sawtooth Down   : not supported\n"));
 127         }
 128
 129         if ( !(supported & SDL_HAPTIC_SPRING) ) {
 130                 mprintf(("  Spring          : not supported\n"));
 131         }
 132 /*
 133         if ( !(supported & SDL_HAPTIC_SQUARE) ) {
 134                 mprintf(("  Square          : not supported\n"));
 135         }
 136 */
 137         if ( !(supported & SDL_HAPTIC_TRIANGLE) ) {
 138                 mprintf(("  Triangle        : not supported\n"));
 139         }
 140
 141
 142         if (supported & SDL_HAPTIC_CONSTANT) {
 143                 // pHitEffect1
 144                 memset(&pHitEffect1, 0, sizeof(haptic_effect_t));
 145
 146                 pHitEffect1.eff.type = SDL_HAPTIC_CONSTANT;
 147                 pHitEffect1.eff.constant.direction.type = SDL_HAPTIC_POLAR;
 148                 pHitEffect1.eff.constant.direction.dir[0] = 0;
 149                 pHitEffect1.eff.constant.length = 300;
 150                 pHitEffect1.eff.constant.level = 0x7FFF;
 151                 pHitEffect1.eff.constant.attack_length = 0;
 152                 pHitEffect1.eff.constant.attack_level = 0x7FFF;
 153                 pHitEffect1.eff.constant.fade_length = 120;
 154                 pHitEffect1.eff.constant.fade_level = 1;
 155
 156                 pHitEffect1.id = SDL_HapticNewEffect(haptic, &pHitEffect1.eff);
 157
 158                 if (pHitEffect1.id < 0) {
 159                         mprintf(("    Hit effect 1 failed to load:\n      %s\n", SDL_GetError()));
 160                 } else {
 161                         pHitEffect1.loaded = 1;
 162                 }
 163         }
 164
 165         if (supported & SDL_HAPTIC_SINE) {
 166                 // pHitEffect2
 167                 memset(&pHitEffect2, 0, sizeof(haptic_effect_t));
 168
 169                 pHitEffect2.eff.type = SDL_HAPTIC_SINE;
 170                 pHitEffect2.eff.periodic.direction.type = SDL_HAPTIC_POLAR;
 171                 pHitEffect2.eff.periodic.direction.dir[0] = 9000;
 172                 pHitEffect2.eff.periodic.length = 300;
 173                 pHitEffect2.eff.periodic.period = 100;
 174                 pHitEffect2.eff.periodic.magnitude = 0x7FFF;
 175                 pHitEffect2.eff.periodic.attack_length = 100;
 176                 pHitEffect2.eff.periodic.fade_length = 100;
 177
 178                 pHitEffect2.id = SDL_HapticNewEffect(haptic, &pHitEffect2.eff);
 179
 180                 if (pHitEffect2.id < 0) {
 181                         mprintf(("    Hit effect 2 failed to load:\n      %s\n", SDL_GetError()));
 182                 } else {
 183                         pHitEffect2.loaded = 1;
 184                 }
 185         }
 186
 187         if (supported & SDL_HAPTIC_SAWTOOTHDOWN) {
 188                 // pShootEffect
 189                 memset(&pShootEffect, 0, sizeof(haptic_effect_t));
 190
 191                 pShootEffect.eff.type = SDL_HAPTIC_SAWTOOTHDOWN;
 192                 pShootEffect.eff.periodic.direction.type = SDL_HAPTIC_POLAR;
 193                 pShootEffect.eff.periodic.direction.dir[0] = 0;
 194                 pShootEffect.eff.periodic.length = 160;
 195                 pShootEffect.eff.periodic.period = 20;
 196                 pShootEffect.eff.periodic.magnitude = 0x7FFF;
 197                 pShootEffect.eff.periodic.fade_length = 120;
 198
 199                 pShootEffect.id = SDL_HapticNewEffect(haptic, &pShootEffect.eff);
 200
 201                 if (pShootEffect.id < 0) {
 202                         mprintf(("    Fire primary effect failed to load:\n      %s\n", SDL_GetError()));
 203                 } else {
 204                         pShootEffect.loaded = 1;
 205                 }
 206         }
 207
 208         if (supported & SDL_HAPTIC_CONSTANT) {
 209                 // pSecShootEffect
 210                 memset(&pSecShootEffect, 0, sizeof(haptic_effect_t));
 211
 212                 pSecShootEffect.eff.type = SDL_HAPTIC_CONSTANT;
 213                 pSecShootEffect.eff.constant.direction.type = SDL_HAPTIC_POLAR;
 214                 pSecShootEffect.eff.constant.direction.dir[0] = 0;
 215                 pSecShootEffect.eff.constant.length = 200;
 216                 pSecShootEffect.eff.constant.level = 0x7FFF;
 217                 pSecShootEffect.eff.constant.attack_length = 50;
 218                 pSecShootEffect.eff.constant.attack_level = 0x7FFF;
 219                 pSecShootEffect.eff.constant.fade_length = 100;
 220                 pSecShootEffect.eff.constant.fade_level = 1;
 221
 222                 pSecShootEffect.id = SDL_HapticNewEffect(haptic, &pSecShootEffect.eff);
 223
 224                 if (pSecShootEffect.id < 0) {
 225                         mprintf(("    Fire secondary effect failed to load:\n      %s\n", SDL_GetError()));
 226                 } else {
 227                         pSecShootEffect.loaded = 1;
 228                 }
 229         }
 230
 231         if (supported & SDL_HAPTIC_SPRING) {
 232                 // pSpring
 233                 memset(&pSpring, 0, sizeof(haptic_effect_t));
 234
 235                 pSpring.eff.type = SDL_HAPTIC_SPRING;
 236                 pSpring.eff.condition.length = SDL_HAPTIC_INFINITY;
 237
 238                 for (int i = 0; i < SDL_HapticNumAxes(haptic); i++) {
 239                         pSpring.eff.condition.right_sat[i] = 0x7FFF;
 240                         pSpring.eff.condition.left_sat[i] = 0x7FFF;
 241                         pSpring.eff.condition.right_coeff[i] = 0x147;
 242                         pSpring.eff.condition.left_coeff[i] = 0x147;
 243                 }
 244
 245                 pSpring.id = SDL_HapticNewEffect(haptic, &pSpring.eff);
 246
 247                 if (pSpring.id < 0) {
 248                         mprintf(("    Spring effect failed to load:\n      %s\n", SDL_GetError()));
 249                 } else {
 250                         pSpring.loaded = 1;
 251                         joy_ff_start_effect(&pSpring, "Spring");
 252                 }
 253         }
 254
 255         if (supported & SDL_HAPTIC_SINE) {
 256                 // pAfterburn1
 257                 memset(&pAfterburn1, 0, sizeof(haptic_effect_t));
 258
 259                 pAfterburn1.eff.type = SDL_HAPTIC_SINE;
 260                 pAfterburn1.eff.periodic.direction.type = SDL_HAPTIC_POLAR;
 261                 pAfterburn1.eff.periodic.direction.dir[0] = 0;
 262                 pAfterburn1.eff.periodic.length = SDL_HAPTIC_INFINITY;
 263                 pAfterburn1.eff.periodic.period = 20;
 264                 pAfterburn1.eff.periodic.magnitude = 0x3332;
 265
 266                 pAfterburn1.id = SDL_HapticNewEffect(haptic, &pAfterburn1.eff);
 267
 268                 if (pAfterburn1.id < 0) {
 269                         mprintf(("    Afterburn effect 1 failed to load:\n      %s\n", SDL_GetError()));
 270                 } else {
 271                         pAfterburn1.loaded = 1;
 272                 }
 273
 274                 // pAfterburn2
 275                 memset(&pAfterburn2, 0, sizeof(haptic_effect_t));
 276
 277                 pAfterburn2.eff.type = SDL_HAPTIC_SINE;
 278                 pAfterburn2.eff.periodic.direction.type = SDL_HAPTIC_POLAR;
 279                 pAfterburn2.eff.periodic.direction.dir[0] = 9000;
 280                 pAfterburn2.eff.periodic.length = 125;
 281                 pAfterburn2.eff.periodic.period = 100;
 282                 pAfterburn2.eff.periodic.magnitude = 0x1999;
 283
 284                 pAfterburn2.id = SDL_HapticNewEffect(haptic, &pAfterburn2.eff);
 285
 286                 if (pAfterburn2.id < 0) {
 287                         mprintf(("    Afterburn effect 2 failed to load:\n      %s\n", SDL_GetError()));
 288                 } else {
 289                         pAfterburn2.loaded = 1;
 290                 }
 291         }
 292
 293
 294 //      if (supported & SDL_HAPTIC_SQUARE) {
 295         if (supported & SDL_HAPTIC_TRIANGLE) {
 296                 // pDock
 297                 memset(&pDock, 0, sizeof(haptic_effect_t));
 298
 299         //      pDock.eff.type = SDL_HAPTIC_SQUARE;
 300                 pDock.eff.type = SDL_HAPTIC_TRIANGLE;
 301                 pDock.eff.periodic.direction.type = SDL_HAPTIC_POLAR;
 302                 pDock.eff.periodic.direction.dir[0] = 9000;
 303                 pDock.eff.periodic.length = 125;
 304                 pDock.eff.periodic.period = 100;
 305                 pDock.eff.periodic.magnitude = 0x3332;
 306
 307                 pDock.id = SDL_HapticNewEffect(haptic, &pDock.eff);
 308
 309                 if (pDock.id < 0) {
 310                         mprintf(("    Dock effect failed to load:\n      %s\n", SDL_GetError()));
 311                 } else {
 312                         pDock.loaded = 1;
 313                 }
 314         }
 315 }
 316
 317 static bool joy_ff_can_play()
 318 {
 319         return (Joy_ff_enabled && Joy_ff_acquired);
 320 }
 321
 322 static void joy_ff_update_effect(haptic_effect_t *eff, const char *name)
 323 {
 324         if ( !eff->loaded ) {
 325                 return;
 326         }
 327
 328         if ( SDL_HapticUpdateEffect(haptic, eff->id, &eff->eff) < 0 ) {
 329                 mprintf(("HapticERROR:  Unable to update %s:\n  %s\n", name, SDL_GetError()));
 330         }
 331 }
 332
 333 static void joy_ff_start_effect(haptic_effect_t *eff, const char *name)
 334 {
 335         if ( !eff->loaded ) {
 336                 return;
 337         }
 338
 339 //      nprintf(("Joystick", "FF: Starting effect %s\n", name));
 340
 341         if ( SDL_HapticRunEffect(haptic, eff->id, 1) ) {
 342                 mprintf(("HapticERROR:  Unable to run %s:\n  %s\n", name, SDL_GetError()));
 343         }
 344 }
 345
 346 void joy_ff_stop_effects()
 347 {
 348         if ( !Joy_ff_enabled ) {
 349                 return;
 350         }
 351
 352         SDL_HapticStopAll(haptic);
 353 }
 354
 355 void joy_ff_mission_init(vector v)
 356 {
 357         v.xyz.z = 0.0f;
 358
 359         joy_ff_handling_scaler = (int) ((vm_vec_mag(&v) + 1.3f) * 5.0f);
 360
 361         Joy_ff_afterburning = 0;
 362
 363         joy_ff_adjust_handling(0);
 364
 365         if ( !joy_ff_effect_playing(&pSpring) ) {
 366                 joy_ff_start_effect(&pSpring, "Spring");
 367         }
 368
 369         // reset afterburn effects to default values
 370
 371         pAfterburn1.eff.periodic.length = SDL_HAPTIC_INFINITY;
 372         pAfterburn1.eff.periodic.period = 20;
 373         pAfterburn1.eff.periodic.magnitude = 0x3332;
 374         pAfterburn1.eff.periodic.attack_length = 0;
 375
 376         joy_ff_update_effect(&pAfterburn1, "pAfterburn1");
 377
 378         pAfterburn2.eff.periodic.length = SDL_HAPTIC_INFINITY;
 379         pAfterburn2.eff.periodic.period = 100;
 380         pAfterburn2.eff.periodic.magnitude = 0x1999;
 381         pAfterburn2.eff.periodic.attack_length = 0;
 382
 383         joy_ff_update_effect(&pAfterburn2, "pAfterburn2");
 384
 385         // reset primary shoot effect to default values
 386
 387         pShootEffect.eff.periodic.direction.dir[0] = 0;
 388         pShootEffect.eff.periodic.length = 160;
 389         pShootEffect.eff.periodic.fade_length = 120;
 390
 391         joy_ff_update_effect(&pShootEffect, "pShootEffect");
 392 }
 393
 394 void joy_reacquire_ff()
 395 {
 396         if ( !Joy_ff_enabled ) {
 397                 return;
 398         }
 399
 400         if (Joy_ff_acquired) {
 401                 return;
 402         }
 403
 404         joy_ff_start_effect(&pSpring, "Spring");
 405
 406         Joy_ff_acquired = 1;
 407 }
 408
 409 void joy_unacquire_ff()
 410 {
 411         if ( !Joy_ff_enabled ) {
 412                 return;
 413         }
 414
 415         if ( !Joy_ff_acquired ) {
 416                 return;
 417         }
 418
 419         joy_ff_stop_effects();
 420
 421         Joy_ff_acquired = 0;
 422 }
 423
 424 void joy_ff_play_vector_effect(vector *v, float scaler)
 425 {
 426         vector vf;
 427         float x, y;
 428
 429         if ( !joy_ff_can_play() ) {
 430                 return;
 431         }
 432
 433 //      nprintf(("Joystick", "FF: vec = { %f, %f, %f } s = %f\n", v->xyz.x, v->xyz.y, v->xyz.z, scaler));
 434         vm_vec_copy_scale(&vf, v, scaler);
 435         x = vf.xyz.x;
 436         vf.xyz.x = 0.0f;
 437
 438         if (vf.xyz.y + vf.xyz.z < 0.0f) {
 439                 y = -vm_vec_mag(&vf);
 440         } else {
 441                 y = vm_vec_mag(&vf);
 442         }
 443
 444         joy_ff_play_dir_effect(-x, -y);
 445 }
 446
 447 void joy_ff_play_dir_effect(float x, float y)
 448 {
 449         int idegs, imag;
 450         float degs;
 451
 452         if ( !joy_ff_can_play() ) {
 453                 return;
 454         }
 455
 456         // allow for at least one of the effects to work
 457         if ( !pHitEffect1.loaded && !pHitEffect2.loaded ) {
 458                 return;
 459         }
 460
 461         if (joy_ff_effect_playing(&pHitEffect1) || joy_ff_effect_playing(&pHitEffect2)) {
 462                 nprintf(("Joystick", "FF: HitEffect already playing.  Skipping\n"));
 463                 return;
 464         }
 465
 466         if (Joy_ff_directional_hit_effect_enabled) {
 467                 if (x > 8000.0f) {
 468                         x = 8000.0f;
 469                 } else if (x < -8000.0f) {
 470                         x = -8000.0f;
 471                 }
 472
 473                 if (y > 8000.0f) {
 474                         y = 8000.0f;
 475                 } else if (y < -8000.0f) {
 476                         y = -8000.0f;
 477                 }
 478
 479                 imag = (int) fl_sqrt(x * x + y * y);
 480                 if (imag > 10000) {
 481                         imag = 10000;
 482                 }
 483
 484                 degs = (float)atan2(x, y);
 485                 idegs = (int) (degs * 18000.0f / PI) + 90;
 486                 while (idegs < 0) {
 487                         idegs += 36000;
 488                 }
 489
 490                 while (idegs >= 36000) {
 491                         idegs -= 36000;
 492                 }
 493
 494                 if (pHitEffect1.loaded) {
 495                         pHitEffect1.eff.constant.direction.dir[0] = idegs;
 496                         pHitEffect1.eff.constant.level = (Sint16)(32767.0f * (imag / 10000.0f));
 497
 498                         joy_ff_update_effect(&pHitEffect1, "pHitEffect1");
 499                 }
 500
 501                 idegs += 9000;
 502                 if (idegs >= 36000)
 503                         idegs -= 36000;
 504
 505                 if (pHitEffect2.loaded) {
 506                         pHitEffect2.eff.periodic.direction.dir[0] = idegs;
 507                         pHitEffect2.eff.periodic.magnitude = (Sint16)(32767.0f * (imag / 10000.0f));
 508
 509                         joy_ff_update_effect(&pHitEffect2, "pHitEffect2");
 510                 }
 511         }
 512
 513         joy_ff_start_effect(&pHitEffect1, "HitEffect1");
 514         joy_ff_start_effect(&pHitEffect2, "HitEffect2");
 515 }
 516
 517 void joy_ff_play_primary_shoot(int gain)
 518 {
 519         if ( !joy_ff_can_play() ) {
 520                 return;
 521         }
 522
 523         if ( !pShootEffect.loaded && !Joy_rumble ) {
 524                 return;
 525         }
 526
 527         if (gain < 1) {
 528                 gain = 1;
 529         } else if (gain > 10000) {
 530                 gain = 10000;
 531         }
 532
 533         if (pShootEffect.loaded) {
 534                 SDL_HapticStopEffect(haptic, pShootEffect.id);
 535
 536                 static int primary_ff_level = 10000;
 537
 538                 if (gain != primary_ff_level) {
 539                         pShootEffect.eff.periodic.magnitude = (Sint16)(32767.0f * (gain / 10000.0f));
 540
 541                         joy_ff_update_effect(&pShootEffect, "pShootEffect");
 542
 543                         primary_ff_level = gain;
 544                 }
 545
 546                 joy_ff_start_effect(&pShootEffect, "ShootEffect");
 547         } else if (Joy_rumble) {
 548                 SDL_HapticRumblePlay(haptic, (gain / 10000.0f) * 0.5f, 100);
 549         }
 550 }
 551
 552 void joy_ff_play_secondary_shoot(int gain)
 553 {
 554         if ( !joy_ff_can_play() ) {
 555                 return;
 556         }
 557
 558         if ( !pSecShootEffect.loaded && !Joy_rumble ) {
 559                 return;
 560         }
 561
 562         gain = gain * 100 + 2500;
 563
 564         if (gain < 1) {
 565                 gain = 1;
 566         } else if (gain > 10000) {
 567                 gain = 10000;
 568         }
 569
 570         if (pSecShootEffect.loaded) {
 571                 SDL_HapticStopEffect(haptic, pSecShootEffect.id);
 572
 573                 static int secondary_ff_level = 10000;
 574
 575                 if (gain != secondary_ff_level) {
 576                         pSecShootEffect.eff.constant.level = (Sint16)(32767.0f * (gain / 10000.0f));
 577                         pSecShootEffect.eff.constant.length = (150000 + gain * 25) / 1000;
 578
 579                         joy_ff_update_effect(&pSecShootEffect, "pSecShootEffect");
 580
 581                         secondary_ff_level = gain;
 582                         nprintf(("Joystick", "FF: Secondary force = 0x%04x\n", pSecShootEffect.eff.constant.level));
 583                 }
 584
 585                 joy_ff_start_effect(&pSecShootEffect, "SecShootEffect");
 586         } else if (Joy_rumble) {
 587                 SDL_HapticRumblePlay(haptic, (gain / 10000.0f) * 0.5f, (150000 + gain * 25) / 1000);
 588         }
 589 }
 590
 591 void joy_ff_adjust_handling(int speed)
 592 {
 593         int v;
 594         short coeff = 0;
 595
 596         if ( !joy_ff_can_play() ) {
 597                 return;
 598         }
 599
 600         if ( !pSpring.loaded ) {
 601                 return;
 602         }
 603
 604         static int last_speed = -1000;
 605
 606         if (speed == last_speed) {
 607                 return;
 608         }
 609
 610         last_speed = speed;
 611
 612         v = speed * joy_ff_handling_scaler * 2 / 3;
 613 //      v += joy_ff_handling_scaler * joy_ff_handling_scaler * 6 / 7 + 250;
 614         v += joy_ff_handling_scaler * 45 - 500;
 615
 616         if (v < 0) {
 617                 v = 0;
 618         } else if (v > 10000) {
 619                 v = 10000;
 620         }
 621
 622         coeff = (short)(32767.0f * (v / 10000.0f));
 623
 624         for (int i = 0; i < SDL_HapticNumAxes(haptic); i++) {
 625                 pSpring.eff.condition.right_coeff[i] = coeff;
 626                 pSpring.eff.condition.left_coeff[i] = coeff;
 627         }
 628
 629 //      nprintf(("Joystick", "FF: New handling force = 0x%04x\n", coeff));
 630
 631         joy_ff_update_effect(&pSpring, "pSpring");
 632 }
 633
 634 static int joy_ff_effect_playing(haptic_effect_t *eff)
 635 {
 636         if ( !eff->loaded ) {
 637                 return 0;
 638         } else {
 639                 return (SDL_HapticGetEffectStatus(haptic, eff->id) > 0);
 640         }
 641 }
 642
 643 void joy_ff_docked()
 644 {
 645         if ( !joy_ff_can_play() ) {
 646                 return;
 647         }
 648
 649         if ( !pDock.loaded ) {
 650                 return;
 651         }
 652
 653         SDL_HapticStopEffect(haptic, pDock.id);
 654
 655         pDock.eff.periodic.magnitude = 0x3332;
 656
 657         joy_ff_update_effect(&pDock, "pDock");
 658
 659         joy_ff_start_effect(&pDock, "Dock");
 660 }
 661
 662 void joy_ff_play_reload_effect()
 663 {
 664         if ( !joy_ff_can_play() ) {
 665                 return;
 666         }
 667
 668         if ( !pDock.loaded ) {
 669                 return;
 670         }
 671
 672         SDL_HapticStopEffect(haptic, pDock.id);
 673
 674         pDock.eff.periodic.magnitude = 0x1999;
 675
 676         joy_ff_update_effect(&pDock, "pDock");
 677
 678         joy_ff_start_effect(&pDock, "Dock (Reload)");
 679 }
 680
 681 void joy_ff_afterburn_on()
 682 {
 683         if ( !joy_ff_can_play() ) {
 684                 return;
 685         }
 686
 687         if (Joy_ff_afterburning) {
 688                 return;
 689         }
 690
 691         if ( !(pAfterburn1.loaded && pAfterburn2.loaded) ) {
 692                 return;
 693         }
 694
 695         SDL_HapticStopEffect(haptic, pAfterburn1.id);
 696
 697         pAfterburn1.eff.periodic.length = SDL_HAPTIC_INFINITY;
 698         pAfterburn1.eff.periodic.magnitude = 0x3332;
 699
 700         joy_ff_update_effect(&pAfterburn1, "pAfterburn1");
 701
 702         SDL_HapticStopEffect(haptic, pAfterburn2.id);
 703
 704         pAfterburn2.eff.periodic.length = SDL_HAPTIC_INFINITY;
 705         pAfterburn2.eff.periodic.magnitude = 0x1999;
 706
 707         joy_ff_update_effect(&pAfterburn2, "pAfterburn2");
 708
 709         joy_ff_start_effect(&pAfterburn1, "Afterburn1");
 710         joy_ff_start_effect(&pAfterburn2, "Afterburn2");
 711
 712 //      nprintf(("Joystick", "FF: Afterburn started\n"));
 713
 714         Joy_ff_afterburning = 1;
 715 }
 716
 717 void joy_ff_afterburn_off()
 718 {
 719         if ( !joy_ff_can_play() ) {
 720                 return;
 721         }
 722
 723         if ( !Joy_ff_afterburning ) {
 724                 return;
 725         }
 726
 727         if (pAfterburn1.loaded) {
 728                 SDL_HapticStopEffect(haptic, pAfterburn1.id);
 729         }
 730
 731         if (pAfterburn2.loaded) {
 732                 SDL_HapticStopEffect(haptic, pAfterburn2.id);
 733         }
 734
 735         Joy_ff_afterburning = 0;
 736
 737 //      nprintf(("Joystick", "FF: Afterburn stopped\n"));
 738 }
 739
 740 void joy_ff_explode()
 741 {
 742         if ( !joy_ff_can_play() ) {
 743                 return;
 744         }
 745
 746         if (pAfterburn1.loaded) {
 747                 SDL_HapticStopEffect(haptic, pAfterburn1.id);
 748         }
 749
 750         if (pAfterburn2.loaded) {
 751                 SDL_HapticStopEffect(haptic, pAfterburn2.id);
 752         }
 753
 754         if (pShootEffect.loaded) {
 755                 SDL_HapticStopEffect(haptic, pShootEffect.id);
 756
 757                 pShootEffect.eff.periodic.direction.dir[0] = 9000;
 758                 pShootEffect.eff.periodic.length = 500;
 759                 pShootEffect.eff.periodic.magnitude = 0x7FFF;
 760                 pShootEffect.eff.periodic.fade_length = 500;
 761
 762                 joy_ff_update_effect(&pShootEffect, "pShootEffect");
 763
 764                 joy_ff_start_effect(&pShootEffect, "ShootEffect (Explode)");
 765         } else if (Joy_rumble) {
 766                 SDL_HapticRumblePlay(haptic, 0.75f, 500);
 767         }
 768
 769         Joy_ff_afterburning = 0;
 770 }
 771
 772 void joy_ff_fly_by(int mag)
 773 {
 774         int gain;
 775
 776         if ( !joy_ff_can_play() ) {
 777                 return;
 778         }
 779
 780         if (Joy_ff_afterburning) {
 781                 return;
 782         }
 783
 784         if ( !(pAfterburn1.loaded && pAfterburn2.loaded) ) {
 785                 return;
 786         }
 787
 788         gain = mag * 120 + 4000;
 789
 790         if (gain < 1) {
 791                 gain = 1;
 792         } else if (gain > 10000) {
 793                 gain = 10000;
 794         }
 795
 796         SDL_HapticStopEffect(haptic, pAfterburn1.id);
 797
 798         pAfterburn1.eff.periodic.length = (6000 * mag + 400000) / 1000;
 799         pAfterburn1.eff.periodic.magnitude = (Sint16)(32767.0f * (gain / 10000.0f));
 800
 801         joy_ff_update_effect(&pAfterburn1, "pAfterburn1");
 802
 803         SDL_HapticStopEffect(haptic, pAfterburn2.id);
 804
 805         pAfterburn2.eff.periodic.length = (6000 * mag + 400000) / 1000;
 806         pAfterburn2.eff.periodic.magnitude = (Sint16)(32767.0f * (gain / 10000.0f));
 807
 808         joy_ff_update_effect(&pAfterburn2, "pAfterburn2");
 809
 810         joy_ff_start_effect(&pAfterburn1, "Afterburn1 (Fly by)");
 811         joy_ff_start_effect(&pAfterburn2, "Afterburn2 (Fly by)");
 812 }
 813
 814 void joy_ff_deathroll()
 815 {
 816         if ( !joy_ff_can_play() ) {
 817                 return;
 818         }
 819
 820         if (pAfterburn1.loaded && pAfterburn2.loaded) {
 821                 SDL_HapticStopEffect(haptic, pAfterburn1.id);
 822
 823                 pAfterburn1.eff.periodic.length = SDL_HAPTIC_INFINITY;
 824                 pAfterburn1.eff.periodic.period = 200;
 825                 pAfterburn1.eff.periodic.magnitude = 0x7FFF;
 826                 pAfterburn1.eff.periodic.attack_length = 200;
 827
 828                 joy_ff_update_effect(&pAfterburn1, "pAfterburn1");
 829
 830                 SDL_HapticStopEffect(haptic, pAfterburn2.id);
 831
 832                 pAfterburn2.eff.periodic.length = SDL_HAPTIC_INFINITY;
 833                 pAfterburn2.eff.periodic.period = 200;
 834                 pAfterburn2.eff.periodic.magnitude = 0x7FFF;
 835                 pAfterburn2.eff.periodic.attack_length = 200;
 836
 837                 joy_ff_update_effect(&pAfterburn2, "pAfterburn2");
 838
 839                 joy_ff_start_effect(&pAfterburn1, "Afterburn1 (Death Roll)");
 840                 joy_ff_start_effect(&pAfterburn2, "Afterburn2 (Death Roll)");
 841
 842                 Joy_ff_afterburning = 1;
 843         }
 844 }