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                 }
 252         }
 253
 254         if (supported & SDL_HAPTIC_SINE) {
 255                 // pAfterburn1
 256                 memset(&pAfterburn1, 0, sizeof(haptic_effect_t));
 257
 258                 pAfterburn1.eff.type = SDL_HAPTIC_SINE;
 259                 pAfterburn1.eff.periodic.direction.type = SDL_HAPTIC_POLAR;
 260                 pAfterburn1.eff.periodic.direction.dir[0] = 0;
 261                 pAfterburn1.eff.periodic.length = SDL_HAPTIC_INFINITY;
 262                 pAfterburn1.eff.periodic.period = 20;
 263                 pAfterburn1.eff.periodic.magnitude = 0x3332;
 264
 265                 pAfterburn1.id = SDL_HapticNewEffect(haptic, &pAfterburn1.eff);
 266
 267                 if (pAfterburn1.id < 0) {
 268                         mprintf(("    Afterburn effect 1 failed to load:\n      %s\n", SDL_GetError()));
 269                 } else {
 270                         pAfterburn1.loaded = 1;
 271                 }
 272
 273                 // pAfterburn2
 274                 memset(&pAfterburn2, 0, sizeof(haptic_effect_t));
 275
 276                 pAfterburn2.eff.type = SDL_HAPTIC_SINE;
 277                 pAfterburn2.eff.periodic.direction.type = SDL_HAPTIC_POLAR;
 278                 pAfterburn2.eff.periodic.direction.dir[0] = 9000;
 279                 pAfterburn2.eff.periodic.length = 125;
 280                 pAfterburn2.eff.periodic.period = 100;
 281                 pAfterburn2.eff.periodic.magnitude = 0x1999;
 282
 283                 pAfterburn2.id = SDL_HapticNewEffect(haptic, &pAfterburn2.eff);
 284
 285                 if (pAfterburn2.id < 0) {
 286                         mprintf(("    Afterburn effect 2 failed to load:\n      %s\n", SDL_GetError()));
 287                 } else {
 288                         pAfterburn2.loaded = 1;
 289                 }
 290         }
 291
 292
 293 //      if (supported & SDL_HAPTIC_SQUARE) {
 294         if (supported & SDL_HAPTIC_TRIANGLE) {
 295                 // pDock
 296                 memset(&pDock, 0, sizeof(haptic_effect_t));
 297
 298         //      pDock.eff.type = SDL_HAPTIC_SQUARE;
 299                 pDock.eff.type = SDL_HAPTIC_TRIANGLE;
 300                 pDock.eff.periodic.direction.type = SDL_HAPTIC_POLAR;
 301                 pDock.eff.periodic.direction.dir[0] = 9000;
 302                 pDock.eff.periodic.length = 125;
 303                 pDock.eff.periodic.period = 100;
 304                 pDock.eff.periodic.magnitude = 0x3332;
 305
 306                 pDock.id = SDL_HapticNewEffect(haptic, &pDock.eff);
 307
 308                 if (pDock.id < 0) {
 309                         mprintf(("    Dock effect failed to load:\n      %s\n", SDL_GetError()));
 310                 } else {
 311                         pDock.loaded = 1;
 312                 }
 313         }
 314 }
 315
 316 static bool joy_ff_can_play()
 317 {
 318         return (Joy_ff_enabled && Joy_ff_acquired);
 319 }
 320
 321 static void joy_ff_update_effect(haptic_effect_t *eff, const char *name)
 322 {
 323         if ( !eff->loaded ) {
 324                 return;
 325         }
 326
 327         if ( SDL_HapticUpdateEffect(haptic, eff->id, &eff->eff) < 0 ) {
 328                 mprintf(("HapticERROR:  Unable to update %s:\n  %s\n", name, SDL_GetError()));
 329         }
 330 }
 331
 332 static void joy_ff_start_effect(haptic_effect_t *eff, const char *name)
 333 {
 334         if ( !eff->loaded ) {
 335                 return;
 336         }
 337
 338 //      nprintf(("Joystick", "FF: Starting effect %s\n", name));
 339
 340         if ( SDL_HapticRunEffect(haptic, eff->id, 1) ) {
 341                 mprintf(("HapticERROR:  Unable to run %s:\n  %s\n", name, SDL_GetError()));
 342         }
 343 }
 344
 345 void joy_ff_stop_effects()
 346 {
 347         if ( !Joy_ff_enabled ) {
 348                 return;
 349         }
 350
 351         SDL_HapticStopAll(haptic);
 352 }
 353
 354 void joy_ff_mission_init(vector v)
 355 {
 356         v.xyz.z = 0.0f;
 357
 358         joy_ff_handling_scaler = (int) ((vm_vec_mag(&v) + 1.3f) * 5.0f);
 359
 360         Joy_ff_afterburning = 0;
 361
 362         joy_ff_adjust_handling(0);
 363
 364         if ( !joy_ff_effect_playing(&pSpring) ) {
 365                 joy_ff_start_effect(&pSpring, "Spring");
 366         }
 367
 368         // reset afterburn effects to default values
 369
 370         pAfterburn1.eff.periodic.length = SDL_HAPTIC_INFINITY;
 371         pAfterburn1.eff.periodic.period = 20;
 372         pAfterburn1.eff.periodic.magnitude = 0x3332;
 373         pAfterburn1.eff.periodic.attack_length = 0;
 374
 375         joy_ff_update_effect(&pAfterburn1, "pAfterburn1 (init)");
 376
 377         pAfterburn2.eff.periodic.length = SDL_HAPTIC_INFINITY;
 378         pAfterburn2.eff.periodic.period = 100;
 379         pAfterburn2.eff.periodic.magnitude = 0x1999;
 380         pAfterburn2.eff.periodic.attack_length = 0;
 381
 382         joy_ff_update_effect(&pAfterburn2, "pAfterburn2 (init)");
 383
 384         // reset primary shoot effect to default values
 385
 386         pShootEffect.eff.periodic.direction.dir[0] = 0;
 387         pShootEffect.eff.periodic.length = 160;
 388         pShootEffect.eff.periodic.fade_length = 120;
 389
 390         joy_ff_update_effect(&pShootEffect, "pShootEffect (init)");
 391 }
 392
 393 void joy_reacquire_ff()
 394 {
 395         if ( !Joy_ff_enabled ) {
 396                 return;
 397         }
 398
 399         if (Joy_ff_acquired) {
 400                 return;
 401         }
 402
 403         joy_ff_start_effect(&pSpring, "Spring");
 404
 405         Joy_ff_acquired = 1;
 406 }
 407
 408 void joy_unacquire_ff()
 409 {
 410         if ( !Joy_ff_enabled ) {
 411                 return;
 412         }
 413
 414         if ( !Joy_ff_acquired ) {
 415                 return;
 416         }
 417
 418         joy_ff_stop_effects();
 419
 420         Joy_ff_acquired = 0;
 421 }
 422
 423 void joy_ff_play_vector_effect(vector *v, float scaler)
 424 {
 425         vector vf;
 426         float x, y;
 427
 428         if ( !joy_ff_can_play() ) {
 429                 return;
 430         }
 431
 432 //      nprintf(("Joystick", "FF: vec = { %f, %f, %f } s = %f\n", v->xyz.x, v->xyz.y, v->xyz.z, scaler));
 433         vm_vec_copy_scale(&vf, v, scaler);
 434         x = vf.xyz.x;
 435         vf.xyz.x = 0.0f;
 436
 437         if (vf.xyz.y + vf.xyz.z < 0.0f) {
 438                 y = -vm_vec_mag(&vf);
 439         } else {
 440                 y = vm_vec_mag(&vf);
 441         }
 442
 443         joy_ff_play_dir_effect(-x, -y);
 444 }
 445
 446 void joy_ff_play_dir_effect(float x, float y)
 447 {
 448         int idegs, imag;
 449         float degs;
 450
 451         if ( !joy_ff_can_play() ) {
 452                 return;
 453         }
 454
 455         // allow for at least one of the effects to work
 456         if ( !pHitEffect1.loaded && !pHitEffect2.loaded ) {
 457                 return;
 458         }
 459
 460         if (joy_ff_effect_playing(&pHitEffect1) || joy_ff_effect_playing(&pHitEffect2)) {
 461                 nprintf(("Joystick", "FF: HitEffect already playing.  Skipping\n"));
 462                 return;
 463         }
 464
 465         if (Joy_ff_directional_hit_effect_enabled) {
 466                 if (x > 8000.0f) {
 467                         x = 8000.0f;
 468                 } else if (x < -8000.0f) {
 469                         x = -8000.0f;
 470                 }
 471
 472                 if (y > 8000.0f) {
 473                         y = 8000.0f;
 474                 } else if (y < -8000.0f) {
 475                         y = -8000.0f;
 476                 }
 477
 478                 imag = (int) fl_sqrt(x * x + y * y);
 479                 if (imag > 10000) {
 480                         imag = 10000;
 481                 }
 482
 483                 degs = (float)atan2(x, y);
 484                 idegs = (int) (degs * 18000.0f / PI) + 90;
 485                 while (idegs < 0) {
 486                         idegs += 36000;
 487                 }
 488
 489                 while (idegs >= 36000) {
 490                         idegs -= 36000;
 491                 }
 492
 493                 if (pHitEffect1.loaded) {
 494                         pHitEffect1.eff.constant.direction.dir[0] = idegs;
 495                         pHitEffect1.eff.constant.level = (Sint16)(32767.0f * (imag / 10000.0f));
 496
 497                         joy_ff_update_effect(&pHitEffect1, "pHitEffect1");
 498                 }
 499
 500                 idegs += 9000;
 501                 if (idegs >= 36000)
 502                         idegs -= 36000;
 503
 504                 if (pHitEffect2.loaded) {
 505                         pHitEffect2.eff.periodic.direction.dir[0] = idegs;
 506                         pHitEffect2.eff.periodic.magnitude = (Sint16)(32767.0f * (imag / 10000.0f));
 507
 508                         joy_ff_update_effect(&pHitEffect2, "pHitEffect2");
 509                 }
 510         }
 511
 512         joy_ff_start_effect(&pHitEffect1, "HitEffect1");
 513         joy_ff_start_effect(&pHitEffect2, "HitEffect2");
 514 }
 515
 516 void joy_ff_play_primary_shoot(int gain)
 517 {
 518         if ( !joy_ff_can_play() ) {
 519                 return;
 520         }
 521
 522         if ( !pShootEffect.loaded && !Joy_rumble ) {
 523                 return;
 524         }
 525
 526         CAP(gain, 1, 10000);
 527
 528         if (pShootEffect.loaded) {
 529                 SDL_HapticStopEffect(haptic, pShootEffect.id);
 530
 531                 static int primary_ff_level = 10000;
 532
 533                 if (gain != primary_ff_level) {
 534                         pShootEffect.eff.periodic.magnitude = (Sint16)(32767.0f * (gain / 10000.0f));
 535
 536                         joy_ff_update_effect(&pShootEffect, "pShootEffect");
 537
 538                         primary_ff_level = gain;
 539                 }
 540
 541                 joy_ff_start_effect(&pShootEffect, "ShootEffect");
 542         } else if (Joy_rumble) {
 543                 SDL_HapticRumblePlay(haptic, gain / 10000.0f, 100);
 544         }
 545 }
 546
 547 void joy_ff_play_secondary_shoot(int gain)
 548 {
 549         if ( !joy_ff_can_play() ) {
 550                 return;
 551         }
 552
 553         if ( !pSecShootEffect.loaded && !Joy_rumble ) {
 554                 return;
 555         }
 556
 557         gain = gain * 100 + 2500;
 558
 559         CAP(gain, 1, 10000);
 560
 561         if (pSecShootEffect.loaded) {
 562                 SDL_HapticStopEffect(haptic, pSecShootEffect.id);
 563
 564                 static int secondary_ff_level = 10000;
 565
 566                 if (gain != secondary_ff_level) {
 567                         pSecShootEffect.eff.constant.level = (Sint16)(32767.0f * (gain / 10000.0f));
 568                         pSecShootEffect.eff.constant.length = (150000 + gain * 25) / 1000;
 569
 570                         joy_ff_update_effect(&pSecShootEffect, "pSecShootEffect");
 571
 572                         secondary_ff_level = gain;
 573                         nprintf(("Joystick", "FF: Secondary force = 0x%04x\n", pSecShootEffect.eff.constant.level));
 574                 }
 575
 576                 joy_ff_start_effect(&pSecShootEffect, "SecShootEffect");
 577         } else if (Joy_rumble) {
 578                 SDL_HapticRumblePlay(haptic, gain / 10000.0f, (150000 + gain * 25) / 1000);
 579         }
 580 }
 581
 582 void joy_ff_adjust_handling(int speed)
 583 {
 584         int v;
 585         short coeff = 0;
 586
 587         if ( !joy_ff_can_play() ) {
 588                 return;
 589         }
 590
 591         if ( !pSpring.loaded ) {
 592                 return;
 593         }
 594
 595         static int last_speed = -1000;
 596
 597         if (speed == last_speed) {
 598                 return;
 599         }
 600
 601         last_speed = speed;
 602
 603         v = speed * joy_ff_handling_scaler * 2 / 3;
 604 //      v += joy_ff_handling_scaler * joy_ff_handling_scaler * 6 / 7 + 250;
 605         v += joy_ff_handling_scaler * 45 - 500;
 606
 607         CAP(v, 0, 10000);
 608
 609         coeff = (short)(32767.0f * (v / 10000.0f));
 610
 611         for (int i = 0; i < SDL_HapticNumAxes(haptic); i++) {
 612                 pSpring.eff.condition.right_coeff[i] = coeff;
 613                 pSpring.eff.condition.left_coeff[i] = coeff;
 614         }
 615
 616 //      nprintf(("Joystick", "FF: New handling force = 0x%04x\n", coeff));
 617
 618         joy_ff_update_effect(&pSpring, "pSpring");
 619 }
 620
 621 static int joy_ff_effect_playing(haptic_effect_t *eff)
 622 {
 623         if ( !eff->loaded ) {
 624                 return 0;
 625         } else {
 626                 return (SDL_HapticGetEffectStatus(haptic, eff->id) > 0);
 627         }
 628 }
 629
 630 void joy_ff_docked()
 631 {
 632         if ( !joy_ff_can_play() ) {
 633                 return;
 634         }
 635
 636         if ( !pDock.loaded ) {
 637                 return;
 638         }
 639
 640         SDL_HapticStopEffect(haptic, pDock.id);
 641
 642         pDock.eff.periodic.magnitude = 0x3332;
 643
 644         joy_ff_update_effect(&pDock, "pDock");
 645
 646         joy_ff_start_effect(&pDock, "Dock");
 647 }
 648
 649 void joy_ff_play_reload_effect()
 650 {
 651         if ( !joy_ff_can_play() ) {
 652                 return;
 653         }
 654
 655         if ( !pDock.loaded ) {
 656                 return;
 657         }
 658
 659         SDL_HapticStopEffect(haptic, pDock.id);
 660
 661         pDock.eff.periodic.magnitude = 0x1999;
 662
 663         joy_ff_update_effect(&pDock, "pDock (reload)");
 664
 665         joy_ff_start_effect(&pDock, "Dock (Reload)");
 666 }
 667
 668 void joy_ff_afterburn_on()
 669 {
 670         if ( !joy_ff_can_play() ) {
 671                 return;
 672         }
 673
 674         if (Joy_ff_afterburning) {
 675                 return;
 676         }
 677
 678         if ( !(pAfterburn1.loaded && pAfterburn2.loaded) ) {
 679                 return;
 680         }
 681
 682         SDL_HapticStopEffect(haptic, pAfterburn1.id);
 683
 684         pAfterburn1.eff.periodic.length = SDL_HAPTIC_INFINITY;
 685         pAfterburn1.eff.periodic.magnitude = 0x3332;
 686
 687         joy_ff_update_effect(&pAfterburn1, "pAfterburn1");
 688
 689         SDL_HapticStopEffect(haptic, pAfterburn2.id);
 690
 691         pAfterburn2.eff.periodic.length = SDL_HAPTIC_INFINITY;
 692         pAfterburn2.eff.periodic.magnitude = 0x1999;
 693
 694         joy_ff_update_effect(&pAfterburn2, "pAfterburn2");
 695
 696         joy_ff_start_effect(&pAfterburn1, "Afterburn1");
 697         joy_ff_start_effect(&pAfterburn2, "Afterburn2");
 698
 699 //      nprintf(("Joystick", "FF: Afterburn started\n"));
 700
 701         Joy_ff_afterburning = 1;
 702 }
 703
 704 void joy_ff_afterburn_off()
 705 {
 706         if ( !joy_ff_can_play() ) {
 707                 return;
 708         }
 709
 710         if ( !Joy_ff_afterburning ) {
 711                 return;
 712         }
 713
 714         if (pAfterburn1.loaded) {
 715                 SDL_HapticStopEffect(haptic, pAfterburn1.id);
 716         }
 717
 718         if (pAfterburn2.loaded) {
 719                 SDL_HapticStopEffect(haptic, pAfterburn2.id);
 720         }
 721
 722         Joy_ff_afterburning = 0;
 723
 724 //      nprintf(("Joystick", "FF: Afterburn stopped\n"));
 725 }
 726
 727 void joy_ff_explode()
 728 {
 729         if ( !joy_ff_can_play() ) {
 730                 return;
 731         }
 732
 733         if (pAfterburn1.loaded) {
 734                 SDL_HapticStopEffect(haptic, pAfterburn1.id);
 735         }
 736
 737         if (pAfterburn2.loaded) {
 738                 SDL_HapticStopEffect(haptic, pAfterburn2.id);
 739         }
 740
 741         if (pShootEffect.loaded) {
 742                 SDL_HapticStopEffect(haptic, pShootEffect.id);
 743
 744                 pShootEffect.eff.periodic.direction.dir[0] = 9000;
 745                 pShootEffect.eff.periodic.length = 500;
 746                 pShootEffect.eff.periodic.magnitude = 0x7FFF;
 747                 pShootEffect.eff.periodic.fade_length = 500;
 748
 749                 joy_ff_update_effect(&pShootEffect, "pShootEffect (explode)");
 750
 751                 joy_ff_start_effect(&pShootEffect, "ShootEffect (Explode)");
 752         } else if (Joy_rumble) {
 753                 SDL_HapticRumblePlay(haptic, 1.0f, 500);
 754         }
 755
 756         Joy_ff_afterburning = 0;
 757 }
 758
 759 void joy_ff_fly_by(int mag)
 760 {
 761         int gain;
 762
 763         if ( !joy_ff_can_play() ) {
 764                 return;
 765         }
 766
 767         if (Joy_ff_afterburning) {
 768                 return;
 769         }
 770
 771         if ( !(pAfterburn1.loaded && pAfterburn2.loaded) ) {
 772                 return;
 773         }
 774
 775         gain = mag * 120 + 4000;
 776
 777         CAP(gain, 1, 10000);
 778
 779         SDL_HapticStopEffect(haptic, pAfterburn1.id);
 780
 781         pAfterburn1.eff.periodic.length = (6000 * mag + 400000) / 1000;
 782         pAfterburn1.eff.periodic.magnitude = (Sint16)(26212.0f * (gain / 10000.0f));
 783
 784         joy_ff_update_effect(&pAfterburn1, "pAfterburn1 (flyby)");
 785
 786         SDL_HapticStopEffect(haptic, pAfterburn2.id);
 787
 788         pAfterburn2.eff.periodic.length = (6000 * mag + 400000) / 1000;
 789         pAfterburn2.eff.periodic.magnitude = (Sint16)(13106.0f * (gain / 10000.0f));
 790
 791         joy_ff_update_effect(&pAfterburn2, "pAfterburn2 (flyby)");
 792
 793         joy_ff_start_effect(&pAfterburn1, "Afterburn1 (Fly by)");
 794         joy_ff_start_effect(&pAfterburn2, "Afterburn2 (Fly by)");
 795 }
 796
 797 void joy_ff_deathroll()
 798 {
 799         if ( !joy_ff_can_play() ) {
 800                 return;
 801         }
 802
 803         if (pAfterburn1.loaded && pAfterburn2.loaded) {
 804                 SDL_HapticStopEffect(haptic, pAfterburn1.id);
 805
 806                 pAfterburn1.eff.periodic.length = SDL_HAPTIC_INFINITY;
 807                 pAfterburn1.eff.periodic.period = 200;
 808                 pAfterburn1.eff.periodic.magnitude = 0x7FFF;
 809                 pAfterburn1.eff.periodic.attack_length = 200;
 810
 811                 joy_ff_update_effect(&pAfterburn1, "pAfterburn1 (deathroll)");
 812
 813                 SDL_HapticStopEffect(haptic, pAfterburn2.id);
 814
 815                 pAfterburn2.eff.periodic.length = SDL_HAPTIC_INFINITY;
 816                 pAfterburn2.eff.periodic.period = 200;
 817                 pAfterburn2.eff.periodic.magnitude = 0x7FFF;
 818                 pAfterburn2.eff.periodic.attack_length = 200;
 819
 820                 joy_ff_update_effect(&pAfterburn2, "pAfterburn2 (deathroll)");
 821
 822                 joy_ff_start_effect(&pAfterburn1, "Afterburn1 (Death Roll)");
 823                 joy_ff_start_effect(&pAfterburn2, "Afterburn2 (Death Roll)");
 824
 825                 Joy_ff_afterburning = 1;
 826         }
 827 }