player_replay.c

   1 #ifndef PLAYER_REPLAY_C
   2 #define PLAYER_REPLAY_C
   3
   4 #include "player_replay.h"
   5 #include "input.h"
   6 #include "gui.h"
   7 #include "freecam.h"
   8
   9 static void replay_clear( replay_buffer *replay ){
  10    replay->head = NULL;
  11    replay->tail = NULL;
  12    replay->cursor_frame = NULL;
  13    replay->statehead = NULL;
  14    replay->cursor = -99999.9;
  15 }
  16
  17 static
  18 void * replay_frame_data( replay_frame *frame, enum replay_framedata type ){
  19    void *baseptr = frame;
  20    return baseptr + frame->data_table[type][0];
  21 }
  22
  23 static u16
  24 replay_frame_calculate_data_offsets( u16 data_table[4][2] ){
  25    u32 total = vg_align8( sizeof(replay_frame) );
  26    for( u32 i=0; i<4; i++ ){
  27       data_table[i][0] = total;
  28       total += vg_align8(data_table[i][1]);
  29
  30       if( total > 0xffff )
  31          vg_fatal_error( "Exceeded frame storage capacity\n" );
  32    }
  33    return total;
  34 }
  35
  36 static void replay_tailpop( replay_buffer *replay ){
  37    if( replay->cursor_frame == replay->tail )
  38       replay->cursor_frame = NULL;
  39    if( replay->statehead == replay->tail )
  40       replay->statehead = NULL;
  41
  42    replay->tail = replay->tail->r;
  43
  44    if( replay->tail )
  45       replay->tail->l = NULL;
  46    else
  47       replay->head = NULL;
  48 }
  49
  50 static replay_frame *replay_newframe( replay_buffer *replay,
  51                                          u16 animator_size,
  52                                          u16 gamestate_size,
  53                                          u16 sfx_count ){
  54    u16 data_table[4][2];
  55    data_table[ k_replay_framedata_animator ][1]  = animator_size;
  56    data_table[ k_replay_framedata_gamestate ][1] = gamestate_size;
  57    data_table[ k_replay_framedata_sfx ][1]       = 0;
  58    data_table[ k_replay_framedata_internal_gamestate ][1] = 0;
  59    if( gamestate_size ){
  60       data_table[ k_replay_framedata_internal_gamestate ][1] =
  61          sizeof( replay_gamestate );
  62    }
  63
  64    u32 nextsize = replay_frame_calculate_data_offsets( data_table );
  65
  66    replay_frame *frame = NULL;
  67    if( replay->head ){
  68       u32 headsize = replay->head->total_size,
  69           nextpos  = ((void *)replay->head - replay->data) + headsize;
  70
  71       if( nextpos + nextsize > replay->size ){
  72          nextpos = 0;
  73
  74          /* maintain contiguity */
  75          while( replay->tail ){
  76             if( (void *)replay->tail - replay->data )
  77                replay_tailpop( replay );
  78             else break;
  79          }
  80       }
  81
  82 check_again:;
  83       u32 tailpos = (void *)replay->tail - replay->data;
  84
  85       if( tailpos >= nextpos ){
  86          if( nextpos + nextsize > tailpos ){
  87             replay_tailpop( replay );
  88
  89             if( replay->tail )
  90                goto check_again;
  91          }
  92       }
  93
  94       frame = replay->data + nextpos;
  95
  96       if( replay->head )
  97          replay->head->r = frame;
  98    }
  99    else
 100       frame = replay->data;
 101
 102    for( u32 i=0; i<4; i++ ){
 103       frame->data_table[i][0] = data_table[i][0];
 104       frame->data_table[i][1] = data_table[i][1];
 105    }
 106
 107    frame->total_size = nextsize;
 108    frame->l = replay->head;
 109    frame->r = NULL;
 110    replay->head = frame;
 111    if( !replay->tail ) replay->tail = frame;
 112    if( gamestate_size ) replay->statehead = frame;
 113
 114    return frame;
 115 }
 116
 117 static void replay_seek( replay_buffer *replay, f64 t ){
 118    if( !replay->head ) return;
 119    assert( replay->tail );
 120
 121    if( t < replay->tail->time ) t = replay->tail->time;
 122    if( t > replay->head->time ) t = replay->head->time;
 123
 124    if( !replay->cursor_frame ) {
 125       replay->cursor = replay->head->time;
 126       replay->cursor_frame = replay->head;
 127
 128       if( fabs(replay->head->time-t) > fabs(replay->tail->time-t) ){
 129          replay->cursor = replay->tail->time;
 130          replay->cursor_frame = replay->tail;
 131       }
 132    }
 133
 134    f64 dir = t - replay->cursor;
 135    if( dir == 0.0 ) return;
 136    dir = vg_signf( dir );
 137
 138    u32 i=4096;
 139    while( i --> 0 ){
 140       if( dir < 0.0 )
 141          if( t > replay->cursor_frame->time ) break;
 142
 143       replay_frame *next;
 144       if( dir > 0.0 ) next = replay->cursor_frame->r;
 145       else            next = replay->cursor_frame->l;
 146
 147       if( !next ) break;
 148
 149       if( dir > 0.0 )
 150          if( t < next->time ) break;
 151
 152       replay->cursor_frame = next;
 153       replay->cursor = next->time;
 154
 155       if( !i ) return;
 156    }
 157
 158    replay->cursor = t;
 159 }
 160
 161 static replay_frame *replay_find_recent_stateframe( replay_buffer *replay ){
 162    replay_frame *frame = replay->cursor_frame;
 163    u32 i=4096;
 164    while( i --> 0 ){
 165       if( !frame ) return frame;
 166       if( frame->data_table[ k_replay_framedata_gamestate ][1] ) return frame;
 167       frame = frame->l;
 168    }
 169
 170    return NULL;
 171 }
 172
 173 static f32 replay_subframe_time( replay_buffer *replay ){
 174    replay_frame *frame = replay->cursor_frame;
 175    if( !frame ) return 0.0f;
 176    replay_frame *next = frame->r;
 177    if( next ){
 178       f64 l = next->time - frame->time,
 179           t = (replay->cursor - frame->time) / l;
 180       return vg_clampf( t, 0.0f, 1.0f );
 181    }
 182    else
 183       return 0.0f;
 184 }
 185
 186 static void replay_get_frame_camera( replay_frame *frame, camera *cam ){
 187    cam->fov = frame->cam_fov;
 188    v3_copy( frame->cam_pos, cam->pos );
 189    v3_copy( frame->cam_angles, cam->angles );
 190 }
 191
 192 static void replay_get_camera( replay_buffer *replay, camera *cam ){
 193    cam->nearz = 0.1f;
 194    cam->farz = 100.0f;
 195    if( replay->cursor_frame ){
 196       replay_frame *next = replay->cursor_frame->r;
 197
 198       if( next ){
 199          camera temp;
 200
 201          replay_get_frame_camera( replay->cursor_frame, cam );
 202          replay_get_frame_camera( next, &temp );
 203          camera_lerp( cam, &temp, replay_subframe_time( replay ), cam );
 204       }
 205       else {
 206          replay_get_frame_camera( replay->cursor_frame, cam );
 207       }
 208    }
 209    else {
 210       v3_zero( cam->pos );
 211       v3_zero( cam->angles );
 212       cam->fov = 90.0f;
 213    }
 214 }
 215
 216 struct replay_rb{
 217    v3f co, v, w;
 218    v4f q;
 219 };
 220
 221 static
 222 void skaterift_record_frame( replay_buffer *replay, int force_gamestate ){
 223    f64 delta      = 9999999.9,
 224        statedelta = 9999999.9;
 225
 226    if( replay->head )
 227       delta = vg.time - replay->head->time;
 228
 229    if( replay->statehead )
 230       statedelta = vg.time - replay->statehead->time;
 231
 232    const f64 k_replay_rate = 1.0/30.0,
 233              k_gamestate_rate = 0.5;
 234
 235    int save_frame = 0,
 236        save_state = 0;
 237
 238    if( force_gamestate ) save_state = 1;
 239    if( statedelta > k_gamestate_rate ) save_state = 1;
 240    if( delta > k_replay_rate ) save_frame = 1;
 241    if( save_state ) save_frame = 1;
 242
 243    if( !save_frame ) return;
 244
 245    u16 gamestate_size = 0;
 246    if( save_state ){
 247       gamestate_size = (u32 []){
 248          [k_player_subsystem_walk ] = sizeof(struct player_walk_state),
 249          [k_player_subsystem_drive] = 0,
 250          [k_player_subsystem_skate] = sizeof(struct player_skate_state),
 251          [k_player_subsystem_dead ] = localplayer.ragdoll.part_count *
 252                                        sizeof(struct replay_rb)
 253       }[ localplayer.subsystem ];
 254    }
 255
 256    u16 animator_size = (u16 []){
 257       [k_player_subsystem_walk ] = sizeof(struct player_walk_animator),
 258       [k_player_subsystem_drive] = 0,
 259       [k_player_subsystem_skate] = sizeof(struct player_skate_animator),
 260       [k_player_subsystem_dead ] = sizeof(struct player_dead_animator)
 261    }[ localplayer.subsystem ];
 262
 263    replay_frame *frame = replay_newframe( replay,
 264                                           animator_size, gamestate_size, 0 );
 265    frame->system = localplayer.subsystem;
 266
 267    if( save_state ){
 268       replay_gamestate *gs =
 269          replay_frame_data( frame, k_replay_framedata_internal_gamestate );
 270
 271       /* permanent block */
 272       memcpy( &gs->rb, &localplayer.rb, sizeof(rigidbody) );
 273       memcpy( &gs->cam_control, &localplayer.cam_control,
 274                sizeof(struct player_cam_controller) );
 275       v3_copy( localplayer.angles, gs->angles );
 276
 277       void *dst = replay_frame_data( frame, k_replay_framedata_gamestate );
 278
 279       /* subsytem/dynamic block */
 280       if( localplayer.subsystem == k_player_subsystem_walk )
 281          memcpy( dst, &player_walk.state, gamestate_size );
 282       else if( localplayer.subsystem == k_player_subsystem_skate )
 283          memcpy( dst, &player_skate.state, gamestate_size );
 284       else if( localplayer.subsystem == k_player_subsystem_dead ){
 285          struct replay_rb *arr = dst;
 286          for( u32 i=0; i<localplayer.ragdoll.part_count; i ++ ){
 287             rigidbody *rb = &localplayer.ragdoll.parts[i].obj.rb;
 288             v3_copy( rb->co, arr[i].co );
 289             v3_copy( rb->w, arr[i].w );
 290             v3_copy( rb->v, arr[i].v );
 291             v4_copy( rb->q, arr[i].q );
 292          }
 293       }
 294    }
 295
 296    replay->cursor = vg.time;
 297    replay->cursor_frame = frame;
 298    frame->time = vg.time;
 299
 300    /* camera */
 301    v3_copy( localplayer.cam.pos, frame->cam_pos );
 302    if( localplayer.gate_waiting ){
 303       m4x3_mulv( localplayer.gate_waiting->transport,
 304                   frame->cam_pos, frame->cam_pos );
 305    }
 306    v3_copy( localplayer.cam.angles, frame->cam_angles );
 307    frame->cam_fov = localplayer.cam.fov;
 308
 309    /* animator */
 310    void *dst = replay_frame_data( frame, k_replay_framedata_animator );
 311
 312    if( localplayer.subsystem == k_player_subsystem_walk )
 313       memcpy( dst, &player_walk.animator, animator_size );
 314    else if( localplayer.subsystem == k_player_subsystem_skate )
 315       memcpy( dst, &player_skate.animator, animator_size );
 316    else if( localplayer.subsystem == k_player_subsystem_dead ){
 317       memcpy( dst, &player_dead.animator, animator_size );
 318    }
 319 }
 320
 321 static
 322 void skaterift_restore_frame( replay_frame *frame ){
 323    replay_gamestate *gs =
 324       replay_frame_data( frame, k_replay_framedata_internal_gamestate );
 325    void *src = replay_frame_data( frame, k_replay_framedata_gamestate );
 326    u16 src_size = frame->data_table[ k_replay_framedata_gamestate ][1];
 327    assert( src_size );
 328
 329    if(frame->system == k_player_subsystem_walk ){
 330       memcpy( &player_walk.state, src, src_size );
 331    }
 332    else if( frame->system == k_player_subsystem_skate ){
 333       memcpy( &player_skate.state, src, src_size );
 334    }
 335    else if( frame->system == k_player_subsystem_dead ){
 336       player__dead_transition(0);
 337       struct replay_rb *arr = src;
 338
 339       for( u32 i=0; i<localplayer.ragdoll.part_count; i ++ ){
 340          struct ragdoll_part *part = &localplayer.ragdoll.parts[i];
 341          rigidbody *rb = &part->obj.rb;
 342
 343          v3_copy( arr[i].co, rb->co );
 344          v3_copy( arr[i].w, rb->w );
 345          v3_copy( arr[i].v, rb->v );
 346          v4_copy( arr[i].q, rb->q );
 347
 348          v3_copy( arr[i].co, part->prev_co );
 349          v4_copy( arr[i].q, part->prev_q );
 350       }
 351    }
 352
 353    localplayer.subsystem = frame->system;
 354
 355    memcpy( &localplayer.rb, &gs->rb, sizeof(rigidbody) );
 356    v3_copy( gs->angles, localplayer.angles );
 357
 358    v3_copy( frame->cam_pos, localplayer.cam.pos );
 359    v3_copy( frame->cam_angles, localplayer.cam.angles );
 360    localplayer.cam.fov = frame->cam_fov;
 361
 362    memcpy( &localplayer.cam_control, &gs->cam_control,
 363             sizeof(struct player_cam_controller) );
 364
 365    /* chop end off replay */
 366    frame->r = NULL;
 367    skaterift.replay.statehead = frame;
 368    skaterift.replay.head = frame;
 369    skaterift.replay.cursor_frame = frame;
 370    skaterift.replay.cursor = frame->time;
 371    skaterift.replay_control = k_replay_control_scrub;
 372    skaterift.activity = k_skaterift_default;
 373    vg.time = frame->time;
 374 }
 375
 376 static void skaterift_replay_resume(void){
 377    replay_frame *prev = replay_find_recent_stateframe(&skaterift.replay);
 378
 379    if( prev ){
 380       skaterift.replay_control = k_replay_control_resume;
 381       skaterift.resume_target = prev;
 382       skaterift.resume_begin = skaterift.replay.cursor;
 383       skaterift.resume_transition = 0.0f;
 384    }
 385
 386    gui_helper_clear();
 387 }
 388
 389 static void skaterift_replay_update_helpers(void);
 390
 391 static void skaterift_replay_pre_update(void){
 392    if( skaterift.activity != k_skaterift_replay ) return;
 393
 394    if( skaterift.replay_control == k_replay_control_resume ){
 395       if( skaterift.replay.cursor_frame == skaterift.resume_target ||
 396           skaterift.replay.cursor_frame == NULL ){
 397          skaterift_restore_frame( skaterift.resume_target );
 398       }
 399       else {
 400          vg_slewf( &skaterift.resume_transition, 1.0f,
 401                    vg.time_frame_delta * (1.0f/1.0f) );
 402
 403          if( skaterift.resume_transition >= 1.0f )
 404             skaterift_restore_frame( skaterift.resume_target );
 405          else {
 406             f64 target = vg_lerp( skaterift.resume_begin,
 407                               skaterift.resume_target->time,
 408                               vg_smoothstepf( skaterift.resume_transition ) );
 409             replay_seek( &skaterift.replay, target );
 410          }
 411       }
 412    }
 413    else {
 414       if( button_down( k_srbind_replay_play ) )
 415          skaterift.replay_control = k_replay_control_play;
 416       if( button_down( k_srbind_replay_freecam ) ){
 417          skaterift.freecam = skaterift.freecam ^ 0x1;
 418
 419          if( skaterift.freecam )
 420             replay_get_camera( &skaterift.replay, &skaterift.replay_freecam );
 421
 422          skaterift_replay_update_helpers();
 423       }
 424
 425       f32 target_speed = axis_state( k_sraxis_replay_h ) * 5.0;
 426       if( button_press( k_srbind_reset ) )
 427          target_speed += -2.0;
 428
 429       if( fabsf(target_speed) > 0.01f )
 430          skaterift.replay_control = k_replay_control_scrub;
 431
 432       if( skaterift.replay_control == k_replay_control_play )
 433          target_speed = 1.0;
 434
 435       vg_slewf( &skaterift.track_velocity, target_speed,
 436                 18.0f*vg.time_frame_delta );
 437
 438       if( fabsf( skaterift.track_velocity ) > 0.0001f ){
 439          f64 target = skaterift.replay.cursor;
 440          target += skaterift.track_velocity * vg.time_frame_delta;
 441
 442          replay_seek( &skaterift.replay, target );
 443       }
 444
 445       if( button_down( k_srbind_mback ) ){
 446          if( skaterift.replay.statehead )
 447             skaterift_restore_frame( skaterift.replay.statehead );
 448          else
 449             skaterift.activity = k_skaterift_default;
 450          srinput.state = k_input_state_resume;
 451          gui_helper_clear();
 452       }
 453
 454       if( skaterift.freecam ){
 455          //freecam_preupdate();
 456       }
 457       else {
 458          if( button_down( k_srbind_replay_resume ) ){
 459             skaterift_replay_resume();
 460          }
 461       }
 462    }
 463 }
 464
 465 static void skaterift_replay_update_helpers(void){
 466    skaterift.helper_resume->greyed = skaterift.freecam;
 467
 468    vg_str freecam_text;
 469    vg_strnull( &freecam_text, skaterift.helper_freecam->text,
 470                GUI_HELPER_TEXT_LENGTH );
 471    vg_strcat( &freecam_text, skaterift.freecam? "exit freecam": "freecam" );
 472 }
 473
 474 static void skaterift_replay_post_render(void){
 475    if( world_static.active_instance != k_world_purpose_client )
 476       return;
 477
 478    /* capture the current resume frame at the very last point */
 479    if( button_down( k_srbind_reset ) ){
 480       if( skaterift.activity == k_skaterift_default ){
 481          localplayer.rewinded_since_last_gate = 1;
 482          skaterift.activity = k_skaterift_replay;
 483          skaterift_record_frame( &skaterift.replay, 1 );
 484          if( skaterift.replay.head ){
 485             skaterift.replay.cursor = skaterift.replay.head->time;
 486             skaterift.replay.cursor_frame = skaterift.replay.head;
 487          }
 488          skaterift.replay_control = k_replay_control_scrub;
 489
 490          gui_helper_clear();
 491          vg_str text;
 492
 493          if( gui_new_helper( input_axis_list[k_sraxis_replay_h], &text ) )
 494             vg_strcat( &text, "scrub" );
 495
 496          if( (skaterift.helper_resume = gui_new_helper(
 497                      input_button_list[k_srbind_replay_resume], &text )) )
 498             vg_strcat( &text, "resume" );
 499
 500          if( gui_new_helper( input_button_list[k_srbind_replay_play], &text ))
 501             vg_strcat( &text, "playback" );
 502
 503          skaterift.helper_freecam = gui_new_helper(
 504                input_button_list[k_srbind_replay_freecam], &text );
 505
 506          skaterift_replay_update_helpers();
 507       }
 508    }
 509 }
 510
 511 #if 0
 512 static void skaterift_get_replay_camera( camera *cam ){
 513    if( skaterift.freecam ){
 514       cam->nearz = 0.1f;
 515       cam->farz = 100.0f;
 516       v3_copy( skaterift.replay_freecam.pos, cam->pos );
 517       v3_copy( skaterift.replay_freecam.angles, cam->angles );
 518       cam->fov = skaterift.replay_freecam.fov;
 519    }
 520    else{
 521       replay_get_camera( &skaterift.replay, &skaterift.cam );
 522    }
 523 }
 524 #endif
 525
 526 static void skaterift_replay_debug_info(void){
 527    player__debugtext( 2, "replay info" );
 528
 529    replay_buffer *replay = &skaterift.replay;
 530
 531    u32 head = 0,
 532        tail = 0;
 533    if( replay->tail ) tail = (void *)replay->tail - replay->data;
 534    if( replay->head ) head = (void *)replay->head - replay->data;
 535
 536    player__debugtext( 1, "head @%u | tail @%u\n", head, tail );
 537
 538    if( replay->statehead ){
 539       for( u32 i=0; i<4; i++ ){
 540          player__debugtext( 1, "[%u]: [%hu, %hu]\n", i,
 541               replay->statehead->data_table[i][0],
 542               replay->statehead->data_table[i][1] );
 543       }
 544       u32 state = (void *)replay->statehead - replay->data;
 545       player__debugtext( 1, "gs @%u\n", state );
 546       player__debugtext( 1, "gamestate_size: %hu\n",
 547            replay->statehead->data_table[k_replay_framedata_gamestate][1] );
 548    }
 549    else
 550       player__debugtext( 1, "gs @NULL\n" );
 551
 552    f64 start = replay->cursor,
 553        end   = replay->cursor;
 554    if( replay->tail ) start = replay->tail->time;
 555    if( replay->head ) end = replay->head->time;
 556
 557    f64 cur = replay->cursor - start,
 558        len = end - start;
 559
 560    player__debugtext( 1, "cursor: %.2fs / %.2fs\n", cur, len );
 561 }
 562
 563 static void skaterift_replay_imgui(void){
 564    if( skaterift.activity != k_skaterift_replay ) return;
 565
 566    replay_buffer *replay = &skaterift.replay;
 567    f64 start = replay->cursor,
 568        end   = replay->cursor;
 569    if( replay->tail ) start = replay->tail->time;
 570    if( replay->head ) end = replay->head->time;
 571    f64 len = end - start,
 572        cur = (replay->cursor - start) / len;
 573
 574    char buffer[ 128 ];
 575
 576    /* mainbar */
 577    ui_px height = 32,
 578          cwidth = 2;
 579    ui_rect bar = { 0, 0, vg.window_x, height };
 580    ui_fill( bar, ui_colour( k_ui_bg ) );
 581
 582    /* cursor frame block */
 583    if( replay->cursor_frame ){
 584       if( replay->cursor_frame->r ){
 585          f64 l = (replay->cursor_frame->r->time-replay->cursor_frame->time)/len,
 586              s = (replay->cursor_frame->time - start) / len;
 587          ui_rect box = { s*(f64)vg.window_x, 0,
 588                          VG_MAX(4,(ui_px)(l*vg.window_x)), bar[3]+2 };
 589          ui_fill( box, ui_colour( k_ui_bg+4 ) );
 590       }
 591    }
 592
 593    /* cursor */
 594    ui_rect cusor = { cur * (f64)vg.window_x - (cwidth/2), 0,
 595                      cwidth, bar[3] };
 596    ui_fill( cusor, ui_colour( k_ui_bg+7 ) );
 597
 598    /* latest state marker */
 599    if( replay->statehead ){
 600       f64 t = (replay->statehead->time - start) / len;
 601       ui_rect tag = { t*(f64)vg.window_x, 0, 2, bar[3]+8 };
 602       ui_fill( tag, ui_colour( k_ui_green+k_ui_brighter ) );
 603    }
 604
 605    /* previous state marker */
 606    replay_frame *prev = replay_find_recent_stateframe( replay );
 607    if( prev ){
 608       f64 t = (prev->time - start) / len;
 609       ui_rect tag = { t*(f64)vg.window_x, 0, 2, bar[3]+8 };
 610       ui_fill( tag, ui_colour( k_ui_yellow+k_ui_brighter ) );
 611    }
 612
 613    cusor[1] -= height;
 614    cusor[2] = 200;
 615    snprintf( buffer, 128, "-%.2fs\n", (end-replay->cursor) );
 616    ui_text( cusor, buffer, 1, k_ui_align_middle_left, 0 );
 617
 618    snprintf( buffer, 128, "-%.2fs\n", len );
 619    ui_text( bar, buffer, 1, k_ui_align_middle_left, 0 );
 620    ui_text( bar, "0s", 1, k_ui_align_middle_right, 0 );
 621 }
 622
 623 #endif /* PLAYER_REPLAY_C */