player.h

   1 #ifndef PLAYER_H
   2 #define PLAYER_H
   3
   4 #include "player_api.h"
   5
   6 #include "player_common.h"
   7 #include "player_walk.h"
   8 #include "player_skate.h"
   9 #include "player_dead.h"
  10
  11 #define PLAYER_REWIND_FRAMES 60*4
  12
  13 struct player_instance
  14 {
  15    /* transform definition */
  16    rigidbody rb, rb_gate_storage;
  17    v3f angles, angles_storage;
  18
  19    v4f   qbasis;
  20    m3x3f basis, invbasis, basis_gate;
  21    world_instance *viewable_world;
  22
  23    /*
  24     * Camera management
  25     * ---------------------------
  26     */
  27    camera cam;
  28
  29    enum camera_mode
  30    {
  31       k_cam_firstperson = 1,
  32       k_cam_thirdperson = 0
  33    }
  34    camera_mode;
  35    float camera_type_blend;
  36
  37    v3f fpv_offset,         /* expressed relative to rigidbody */
  38        tpv_offset,
  39        fpv_viewpoint,      /* expressed relative to neck bone inverse final */
  40        fpv_offset_smooth,
  41        fpv_viewpoint_smooth,
  42        tpv_offset_smooth,
  43        tpv_lpf,
  44        cam_velocity_smooth;
  45
  46    v3f cam_override_pos;
  47    v2f cam_override_angles;
  48    float cam_override_strength;
  49
  50    float cam_velocity_influence,
  51          cam_velocity_coefficient,
  52          cam_velocity_constant,
  53          cam_velocity_coefficient_smooth,
  54          cam_velocity_constant_smooth,
  55          cam_velocity_influence_smooth,
  56          cam_land_punch,
  57          cam_land_punch_v;
  58
  59    ent_gate *gate_waiting;
  60
  61    /*
  62     * Input
  63     * --------------------------------
  64     */
  65    struct input_binding *input_js1h,
  66                         *input_js1v,
  67                         *input_js2h,
  68                         *input_js2v,
  69                         *input_jump,
  70                         *input_push,
  71                         *input_trick0,
  72                         *input_trick1,
  73                         *input_trick2,
  74                         *input_walk,
  75                         *input_walkh,
  76                         *input_walkv,
  77                         *input_use,
  78                         *input_reset,
  79                         *input_grab,
  80                         *input_camera;
  81
  82    /*
  83     * Animation
  84     * --------------------------------------------------
  85     */
  86
  87    struct player_avatar  *playeravatar;
  88    glmesh                *playermesh;
  89    struct player_ragdoll  ragdoll;
  90    vg_tex2d              *playertex;
  91
  92    player_pose            holdout_pose;
  93    float                  holdout_time;
  94
  95    /*
  96     * Rewind
  97     * ----------------------------------------------------
  98     */
  99    int rewinding, rewind_sound_wait;
 100
 101    struct rewind_frame{
 102       v3f pos;
 103       v3f ang;
 104    }
 105    *rewind_buffer;
 106    u32 rewind_length;
 107    float rewind_accum;
 108    ent_gate *rewind_gate;
 109
 110    float rewind_total_length, rewind_predicted_time,
 111          dist_accum;
 112    double rewind_start, rewind_time;
 113
 114    /*
 115     * Subsystems
 116     * -------------------------------------------------
 117     */
 118
 119    enum player_subsystem
 120    {
 121       k_player_subsystem_walk = 0,
 122       k_player_subsystem_skate = 1,
 123       k_player_subsystem_dead = 2
 124    }
 125    subsystem,
 126    subsystem_gate;
 127
 128    struct player_skate  _skate;
 129    struct player_walk   _walk;
 130    struct player_dead   _dead;
 131 };
 132
 133 /*
 134  * Gameloop tables
 135  * ---------------------------------------------------------
 136  */
 137
 138 VG_STATIC
 139 void (*_player_bind[])( player_instance *player ) =
 140 {
 141    player__walk_bind,
 142    player__skate_bind,
 143    NULL
 144 };
 145
 146 VG_STATIC
 147 void (*_player_reset[])( player_instance *player, ent_spawn *rp ) =
 148 {
 149    player__walk_reset,
 150    player__skate_reset,
 151    NULL
 152 };
 153
 154 VG_STATIC
 155 void (*_player_pre_update[])( player_instance *player ) =
 156 {
 157    player__walk_pre_update,
 158    player__skate_pre_update,
 159    NULL
 160 };
 161
 162 VG_STATIC
 163 void( *_player_update[])( player_instance *player ) =
 164 {
 165    player__walk_update,
 166    player__skate_update,
 167    player__dead_update,
 168 };
 169
 170 VG_STATIC
 171 void( *_player_post_update[])( player_instance *player ) =
 172 {
 173    player__walk_post_update,
 174    player__skate_post_update,
 175    NULL
 176 };
 177
 178 VG_STATIC
 179 void( *_player_im_gui[])( player_instance *player ) =
 180 {
 181    player__walk_im_gui,
 182    player__skate_im_gui,
 183    NULL
 184 };
 185
 186 VG_STATIC
 187 void( *_player_animate[])( player_instance *player, player_animation *dest ) =
 188 {
 189    player__walk_animate,
 190    player__skate_animate,
 191    player__dead_animate
 192 };
 193
 194 VG_STATIC
 195 void( *_player_post_animate[])( player_instance *player ) =
 196 {
 197    player__walk_post_animate,
 198    player__skate_post_animate,
 199    player__dead_post_animate
 200 };
 201
 202 VG_STATIC
 203 void( *_player_restore[] )( player_instance *player ) =
 204 {
 205    player__walk_restore,
 206    player__skate_restore,
 207    NULL
 208 };
 209
 210 /* implementation */
 211
 212 #include "player.c"
 213 #include "player_common.c"
 214 #include "player_walk.c"
 215 #include "player_skate.c"
 216 #include "player_dead.c"
 217
 218 #endif /* PLAYER_H */
 219
 220
 221 #if 0
 222 /*
 223  * Copyright (C) 2021-2023 Mt.ZERO Software, Harry Godden - All Rights Reserved
 224  */
 225
 226 #define PLAYER_H
 227 #ifndef PLAYER_H
 228 #define PLAYER_H
 229
 230 #define PLAYER_REWIND_FRAMES 60*4
 231
 232 #include "conf.h"
 233 #include "audio.h"
 234 #include "common.h"
 235 #include "world.h"
 236 #include "skeleton.h"
 237 #include "bvh.h"
 238
 239
 240 /*
 241  * -----------------------------------------------------------------------------
 242  *                                  Memory
 243  * -----------------------------------------------------------------------------
 244  */
 245
 246 VG_STATIC struct gplayer
 247 {
 248    rigidbody rb, rb_frame;
 249    v3f co, angles;         /* used as transfer between controllers */
 250
 251    enum player_controller
 252    {
 253       k_player_controller_walk,
 254       k_player_controller_skate,
 255       k_player_controller_ragdoll,
 256       k_player_controller_mountain_skate,
 257       k_player_controller_snowboard,
 258       k_player_controller_drive
 259    }
 260    controller,
 261    controller_frame;
 262
 263    m4x3f visual_transform,
 264          inv_visual_transform;
 265
 266    int is_dead, death_tick_allowance, rewinding;
 267    int rewind_sound_wait;
 268
 269
 270    v3f handl_target, handr_target,
 271        handl, handr;
 272
 273    /* Input */
 274    struct input_binding *input_js1h,
 275                         *input_js1v,
 276                         *input_js2h,
 277                         *input_js2v,
 278                         *input_jump,
 279                         *input_push,
 280                         *input_walk,
 281                         *input_walkh,
 282                         *input_walkv,
 283                         *input_switch_mode,
 284                         *input_reset,
 285                         *input_grab;
 286
 287    /* Camera */
 288    float air_time;
 289    v3f camera_pos, smooth_localcam;
 290
 291    struct rewind_frame
 292    {
 293       v3f pos;
 294       v3f ang;
 295    }
 296    *rewind_buffer;
 297    u32 rewind_incrementer,
 298        rewind_length;
 299
 300    float rewind_time, rewind_total_length, rewind_predicted_time;
 301    double diag_rewind_start, diag_rewind_time;
 302    float dist_accum;
 303
 304    /* animation */
 305    double jump_time;
 306    float fslide,
 307          fdirz, fdirx,
 308          fstand,
 309          ffly,
 310          fpush,
 311          fairdir,
 312          fsetup,
 313          walk_timer,
 314          fjump,
 315          fonboard,
 316          frun,
 317          fgrind;
 318
 319    v3f board_offset;
 320    v4f board_rotation;
 321
 322    float walk;
 323    int step_phase;
 324    enum mdl_surface_prop surface_prop;
 325
 326    /* player model */
 327    struct player_model
 328    {
 329       glmesh player_meshes[3];
 330
 331       mdl_context meta;
 332       struct skeleton sk;
 333       struct skeleton_anim *anim_stand,
 334                            *anim_highg,
 335                            *anim_slide,
 336                            *anim_air,
 337                            *anim_push, *anim_push_reverse,
 338                            *anim_ollie, *anim_ollie_reverse,
 339                            *anim_grabs, *anim_stop,
 340                            *anim_walk, *anim_run, *anim_idle,
 341                            *anim_jump;
 342
 343       u32 id_hip,
 344           id_ik_hand_l,
 345           id_ik_hand_r,
 346           id_ik_elbow_l,
 347           id_ik_elbow_r,
 348           id_head,
 349           id_ik_foot_l,
 350           id_ik_foot_r,
 351           id_board;
 352
 353       v3f cam_pos;
 354
 355       struct ragdoll_part
 356       {
 357          u32 bone_id;
 358          //v3f offset;
 359
 360          /* Collider transform relative to bone */
 361          m4x3f collider_mtx,
 362                inv_collider_mtx;
 363
 364          u32 use_limits;
 365          v3f limits[2];
 366
 367          rigidbody  rb;
 368          u32 parent;
 369          u32 colour;
 370       }
 371       ragdoll[32];
 372       u32 ragdoll_count;
 373
 374       rb_constr_pos  position_constraints[32];
 375       u32            position_constraints_count;
 376
 377       rb_constr_swingtwist cone_constraints[32];
 378       u32                  cone_constraints_count;
 379
 380       int shoes[2];
 381    }
 382    mdl;
 383 }
 384 player__OLD
 385
 386 #if 0
 387 =
 388 {
 389    .collide_front = { .type = k_rb_shape_sphere, .inf.sphere.radius = 0.3f },
 390    .collide_back  = { .type = k_rb_shape_sphere, .inf.sphere.radius = 0.3f }
 391 }
 392 #endif
 393
 394 ;
 395
 396 /*
 397  * API
 398  */
 399 VG_STATIC float *player_get_pos(void);
 400 VG_STATIC void player_kill(void);
 401 VG_STATIC float *player_cam_pos(void);
 402 VG_STATIC void player_save_frame(void);
 403 VG_STATIC void player_restore_frame(void);
 404 VG_STATIC void player_save_rewind_frame(void);
 405
 406 /*
 407  * Submodules
 408  */
 409 VG_STATIC void player_mouseview(void);
 410
 411 #include "player_physics.h"
 412 #include "player_physics_skate.h"
 413 #include "player_physics_walk.h"
 414 #include "player_ragdoll.h"
 415 #include "player_model.h"
 416 #include "player_animation.h"
 417 #include "player_audio.h"
 418
 419 /*
 420  * player_physics_<INTERFACE>_<SUB-INTERFACE>
 421  *
 422  *
 423  *
 424  */
 425
 426 /*
 427  * -----------------------------------------------------------------------------
 428  *                                    Events
 429  * -----------------------------------------------------------------------------
 430  */
 431 VG_STATIC int kill_player( int argc, char const *argv[] );
 432 VG_STATIC int reset_player( int argc, char const *argv[] );
 433 VG_STATIC void reset_player_poll( int argc, char const *argv[] );
 434
 435 VG_STATIC void player_init(void)                                         /* 1 */
 436 {
 437    rb_init( &player.rb );
 438
 439    VG_VAR_F32( k_walkspeed );
 440    VG_VAR_F32( k_stopspeed );
 441    VG_VAR_F32( k_airspeed );
 442    VG_VAR_F32( k_walk_friction );
 443    VG_VAR_F32( k_walk_air_accel );
 444    VG_VAR_F32( k_walk_accel );
 445
 446    VG_VAR_I32( freecam );
 447    VG_VAR_I32( cl_thirdperson );
 448    VG_VAR_F32_PERSISTENT( fc_speed );
 449
 450    VG_VAR_F32( k_ragdoll_limit_scale );
 451    VG_VAR_I32( k_ragdoll_div );
 452    VG_VAR_I32( k_ragdoll_debug_collider );
 453    VG_VAR_I32( k_ragdoll_debug_constraints );
 454
 455    VG_VAR_F32( k_friction_lat );
 456
 457    VG_VAR_F32( k_cog_spring );
 458    VG_VAR_F32( k_cog_damp );
 459
 460    VG_VAR_F32( k_cog_mass_ratio );
 461    VG_VAR_F32( k_downforce );
 462
 463    VG_VAR_F32( k_spring_force );
 464    VG_VAR_F32( k_spring_dampener );
 465    VG_VAR_F32( k_spring_angular );
 466
 467    VG_VAR_F32( k_mmthrow_scale );
 468    VG_VAR_F32( k_mmcollect_lat );
 469    VG_VAR_F32( k_mmcollect_vert );
 470    VG_VAR_F32( k_mmdecay );
 471
 472         vg_function_push( (struct vg_cmd){
 473                 .name = "reset",
 474                 .function = reset_player,
 475       .poll_suggest = reset_player_poll
 476         });
 477
 478         vg_function_push( (struct vg_cmd){
 479                 .name = "kill",
 480                 .function = kill_player
 481         });
 482
 483    /* HACK */
 484    rb_register_cvar();
 485
 486    player.rewind_length = 0;
 487    player.rewind_buffer =
 488       vg_linear_alloc( vg_mem.rtmemory,
 489                        sizeof(struct rewind_frame) * PLAYER_REWIND_FRAMES );
 490
 491    player_model_init();
 492 }
 493
 494 VG_STATIC void player_save_rewind_frame(void)
 495 {
 496    if( player.rewind_length < PLAYER_REWIND_FRAMES )
 497    {
 498       struct rewind_frame *fr =
 499          &player.rewind_buffer[ player.rewind_length ++ ];
 500
 501       v2_copy( player.angles, fr->ang );
 502       v3_copy( player.camera_pos, fr->pos );
 503
 504       player.rewind_incrementer = 0;
 505
 506       if( player.rewind_length > 1 )
 507       {
 508          player.rewind_total_length +=
 509             v3_dist( player.rewind_buffer[player.rewind_length-1].pos,
 510                      player.rewind_buffer[player.rewind_length-2].pos );
 511       }
 512    }
 513 }
 514
 515
 516 /* disaster */
 517 VG_STATIC int         menu_enabled(void);
 518 #include "menu.h"
 519
 520 VG_STATIC void player_do_motion(void);
 521 /*
 522  * Free camera movement
 523  */
 524 VG_STATIC void player_mouseview(void)
 525 {
 526    if( menu_enabled() )
 527       return;
 528
 529    v2_muladds( player.angles, vg.mouse_delta, 0.0025f, player.angles );
 530
 531    if( vg_input.controller_should_use_trackpad_look )
 532    {
 533       static v2f last_input;
 534       static v2f vel;
 535       static v2f vel_smooth;
 536
 537       v2f input = { player.input_js2h->axis.value,
 538                     player.input_js2v->axis.value };
 539
 540       if( (v2_length2(last_input) > 0.001f) && (v2_length2(input) > 0.001f) )
 541       {
 542          v2_sub( input, last_input, vel );
 543          v2_muls( vel, 1.0f/vg.time_delta, vel );
 544       }
 545       else
 546       {
 547          v2_zero( vel );
 548       }
 549
 550       v2_lerp( vel_smooth, vel, vg.time_delta*8.0f, vel_smooth );
 551
 552       v2_muladds( player.angles, vel_smooth, vg.time_delta, player.angles );
 553       v2_copy( input, last_input );
 554    }
 555    else
 556    {
 557       player.angles[0] += player.input_js2h->axis.value * vg.time_delta * 4.0f;
 558       player.angles[1] += player.input_js2v->axis.value * vg.time_delta * 4.0f;
 559    }
 560
 561    player.angles[1] = vg_clampf( player.angles[1], -VG_PIf*0.5f, VG_PIf*0.5f );
 562 }
 563
 564 /* Deal with input etc */
 565 VG_STATIC void player_update_pre(void)
 566 {
 567
 568    {
 569       v3f ra, rb, rx;
 570       v3_copy( main_camera.pos, ra );
 571       v3_muladds( ra, main_camera.transform[2], -10.0f, rb );
 572
 573       float t;
 574       if( spherecast_world( ra, rb, 0.4f, &t, rx ) != -1 )
 575       {
 576          m4x3f mtx;
 577          m3x3_identity( mtx );
 578          v3_lerp( ra, rb, t, mtx[3] );
 579
 580          debug_sphere( mtx, 0.4f, 0xff00ff00 );
 581
 582          v3f x1;
 583          v3_muladds( mtx[3], rx, 0.4f, x1 );
 584          vg_line( mtx[3], x1, 0xffffffff );
 585       }
 586    }
 587
 588 #if 0
 589
 590    vg_line_pt3( phys->cog, 0.10f, 0xffffffff );
 591    vg_line_pt3( phys->cog, 0.09f, 0xffffffff );
 592    vg_line_pt3( phys->cog, 0.08f, 0xffffffff );
 593    vg_line( phys->cog, phys->rb.co, 0xff000000 );
 594
 595    v3f spring_end;
 596    v3f throw_end, p0, p1;
 597    v3_muladds( phys->rb.co, phys->rb.up, 1.0f, spring_end );
 598    v3_muladds( spring_end, phys->throw_v, 1.0f, throw_end );
 599    v3_muladds( spring_end, player.debug_mmcollect_lat, 1.0f, p0 );
 600    v3_muladds( spring_end, player.debug_mmcollect_vert, 1.0f, p1 );
 601    vg_line( spring_end, throw_end, VG__RED );
 602    vg_line( spring_end, p0, VG__GREEN );
 603    vg_line( spring_end, p1, VG__BLUE );
 604 #endif
 605
 606    if( player.rewinding )
 607       return;
 608
 609    if( vg_input_button_down( player.input_reset ) && !menu_enabled() )
 610    {
 611       double delta = world.time - world.last_use;
 612
 613       if( (delta <= RESET_MAX_TIME) && (world.last_use != 0.0) )
 614       {
 615          player.rewinding = 1;
 616          player.rewind_sound_wait = 1;
 617          player.rewind_time = (float)player.rewind_length - 0.0001f;
 618          player_save_rewind_frame();
 619          audio_lock();
 620          audio_play_oneshot( &audio_rewind[0], 1.0f );
 621          audio_unlock();
 622
 623          /* based on analytical testing. DONT CHANGE!
 624           *
 625           *    time taken: y = (x^(4/5)) * 74.5
 626           *    inverse   : x = (2/149)^(4/5) * y^(4/5)
 627           */
 628
 629          float constant = powf( 2.0f/149.0f, 4.0f/5.0f ),
 630                curve    = powf( player.rewind_total_length, 4.0f/5.0f );
 631
 632          player.rewind_predicted_time = constant * curve;
 633          player.diag_rewind_start = vg.time;
 634          player.diag_rewind_time  = player.rewind_time;
 635
 636          player.is_dead = 0;
 637          player.death_tick_allowance = 30;
 638          player_restore_frame();
 639
 640          if( player.controller == k_player_controller_walk )
 641          {
 642             player.angles[0] = atan2f( -player.rb.forward[2],
 643                                        -player.rb.forward[0] );
 644          }
 645
 646          player.mdl.shoes[0] = 1;
 647          player.mdl.shoes[1] = 1;
 648
 649          world_routes_notify_reset();
 650
 651          /* apply 1 frame of movement */
 652          player_do_motion();
 653       }
 654       else
 655       {
 656          if( player.is_dead )
 657          {
 658             reset_player( 0, NULL );
 659          }
 660          else
 661          {
 662             /* cant do that */
 663             audio_lock();
 664             audio_play_oneshot( &audio_rewind[4], 1.0f );
 665             audio_unlock();
 666          }
 667       }
 668    }
 669
 670    if( vg_input_button_down( player.input_switch_mode ) && !menu_enabled() )
 671    {
 672       audio_lock();
 673
 674 #if 0
 675       if( phys->controller == k_player_controller_walk )
 676       {
 677          phys->controller = k_player_controller_skate;
 678
 679          v3_muladds( phys->rb.v, phys->rb.forward, 0.2f, phys->rb.v );
 680          audio_play_oneshot( &audio_lands[6], 1.0f );
 681       }
 682       else if( phys->controller == k_player_controller_skate )
 683       {
 684          phys->controller = k_player_controller_walk;
 685
 686          audio_play_oneshot( &audio_lands[5], 1.0f );
 687       }
 688 #endif
 689
 690       audio_unlock();
 691    }
 692
 693    if( player.controller == k_player_controller_walk )
 694       player_mouseview();
 695 }
 696
 697 VG_STATIC void player_update_fixed(void)                                 /* 2 */
 698 {
 699    if( player.rewinding )
 700       return;
 701
 702    if( player.death_tick_allowance )
 703       player.death_tick_allowance --;
 704
 705    if( player.is_dead )
 706    {
 707       player_ragdoll_iter();
 708    }
 709    else
 710    {
 711       player.rewind_incrementer ++;
 712
 713       if( player.rewind_incrementer > (u32)(0.25/VG_TIMESTEP_FIXED) )
 714       {
 715          player_save_rewind_frame();
 716       }
 717
 718       player_do_motion();
 719    }
 720 }
 721
 722 VG_STATIC void player_update_post(void)
 723 {
 724 #if 0
 725    for( int i=0; i<player.prediction_count; i++ )
 726    {
 727       struct land_prediction *p = &player.predictions[i];
 728
 729       for( int j=0; j<p->log_length - 1; j ++ )
 730          vg_line( p->log[j], p->log[j+1], p->colour );
 731
 732       vg_line_cross( p->log[p->log_length-1], p->colour, 0.25f );
 733
 734       v3f p1;
 735       v3_add( p->log[p->log_length-1], p->n, p1 );
 736       vg_line( p->log[p->log_length-1], p1, 0xffffffff );
 737    }
 738 #endif
 739
 740 #if 0
 741    if( player.is_dead )
 742    {
 743       player_debug_ragdoll();
 744
 745       if( !freecam )
 746          player_animate_death_cam();
 747    }
 748    else
 749    {
 750       player_animate();
 751
 752       if( !freecam )
 753       {
 754          if( cl_thirdperson )
 755             player_animate_camera_thirdperson();
 756          else
 757             player_animate_camera();
 758       }
 759    }
 760
 761    if( freecam )
 762 #endif
 763       player_freecam();
 764
 765    /* CAMERA POSITIONING: LAYER 0 */
 766    v2_copy( player.angles, main_camera.angles );
 767    v3_copy( player.camera_pos, main_camera.pos );
 768
 769 #if 0
 770    if( player.rewinding )
 771    {
 772       if( player.rewind_time <= 0.0f )
 773       {
 774          double taken = vg.time - player.diag_rewind_start;
 775          vg_success( "Rewind took (rt, pl, tl): %f, %f, %f\n",
 776                            taken, player.diag_rewind_time,
 777                            player.rewind_total_length );
 778
 779          player.rewinding = 0;
 780          player.rewind_length = 1;
 781          player.rewind_total_length = 0.0f;
 782          player.rewind_incrementer = 0;
 783          world.sky_target_rate = 1.0;
 784       }
 785       else
 786       {
 787          world.sky_target_rate = -100.0;
 788          assert( player.rewind_length > 0 );
 789
 790          v2f override_angles;
 791          v3f override_pos;
 792
 793          float budget         = vg.time_delta,
 794                overall_length = player.rewind_length;
 795
 796          world_routes_rollback_time( player.rewind_time / overall_length );
 797
 798          for( int i=0; (i<10)&&(player.rewind_time>0.0f)&&(budget>0.0f); i ++ )
 799          {
 800             /* Interpolate frames */
 801             int i0 = floorf( player.rewind_time ),
 802                 i1 = VG_MIN( i0+1, player.rewind_length-1 );
 803
 804             struct rewind_frame *fr =  &player.rewind_buffer[i0],
 805                                 *fr1 = &player.rewind_buffer[i1];
 806
 807             float dist = vg_maxf( v3_dist( fr->pos, fr1->pos ), 0.001f ),
 808                   subl = vg_fractf( player.rewind_time ) + 0.001f,
 809
 810                   sramp= 3.0f-(1.0f/(0.4f+0.4f*player.rewind_time)),
 811                   speed = sramp*28.0f + 0.5f*player.rewind_time,
 812                   mod  = speed * (budget / dist),
 813
 814                   advl = vg_minf( mod, subl ),
 815                   advt = (advl / mod) * budget;
 816
 817             player.dist_accum += speed * advt;
 818             player.rewind_time -= advl;
 819             budget -= advt;
 820          }
 821
 822          player.rewind_time = vg_maxf( 0.0f, player.rewind_time );
 823
 824          float current_time = vg.time - player.diag_rewind_start,
 825                remaining    = player.rewind_predicted_time - current_time;
 826
 827          if( player.rewind_sound_wait )
 828          {
 829             if( player.rewind_predicted_time >= 6.5f )
 830             {
 831                if( remaining <= 6.5f )
 832                {
 833                   audio_lock();
 834                   audio_play_oneshot( &audio_rewind[3], 1.0f );
 835                   audio_unlock();
 836                   player.rewind_sound_wait = 0;
 837                }
 838             }
 839             else if( player.rewind_predicted_time >= 2.5f )
 840             {
 841                if( remaining <= 2.5f )
 842                {
 843                   audio_lock();
 844                   audio_play_oneshot( &audio_rewind[2], 1.0f );
 845                   audio_unlock();
 846                   player.rewind_sound_wait = 0;
 847                }
 848             }
 849             else if( player.rewind_predicted_time >= 1.5f )
 850             {
 851                if( remaining <= 1.5f )
 852                {
 853                   audio_lock();
 854                   audio_play_oneshot( &audio_rewind[1], 1.0f );
 855                   audio_unlock();
 856                   player.rewind_sound_wait = 0;
 857                }
 858             }
 859          }
 860
 861          int i0 = floorf( player.rewind_time ),
 862              i1 = VG_MIN( i0+1, player.rewind_length-1 );
 863
 864          struct rewind_frame *fr =  &player.rewind_buffer[i0],
 865                              *fr1 = &player.rewind_buffer[i1];
 866
 867          float sub = vg_fractf(player.rewind_time);
 868
 869          v3_lerp( fr->pos, fr1->pos, sub, override_pos );
 870          override_angles[0] = vg_alerpf( fr->ang[0], fr1->ang[0], sub );
 871          override_angles[1] = vg_lerpf ( fr->ang[1], fr1->ang[1], sub );
 872
 873          /* CAMERA POSITIONING: LAYER 1 */
 874          float blend = (4.0f-player.rewind_time) * 0.25f,
 875                c     = vg_clampf( blend, 0.0f, 1.0f );
 876
 877          main_camera.angles[0] =
 878             vg_alerpf(override_angles[0], player.angles[0], c);
 879          main_camera.angles[1] =
 880             vg_lerpf (override_angles[1], player.angles[1], c);
 881          v3_lerp( override_pos, player.camera_pos, c, main_camera.pos );
 882       }
 883    }
 884 #endif
 885
 886    camera_update_transform( &main_camera );
 887    player_audio();
 888 }
 889
 890 VG_STATIC void draw_player( camera *cam )
 891 {
 892    if( player.is_dead )
 893       player_model_copy_ragdoll();
 894
 895    shader_viewchar_use();
 896    vg_tex2d_bind( &tex_characters, 0 );
 897    shader_viewchar_uTexMain( 0 );
 898    shader_viewchar_uCamera( cam->transform[3] );
 899    shader_viewchar_uPv( cam->mtx.pv );
 900    shader_link_standard_ub( _shader_viewchar.id, 2 );
 901    glUniformMatrix4x3fv( _uniform_viewchar_uTransforms,
 902                          player.mdl.sk.bone_count,
 903                          0,
 904                          (float *)player.mdl.sk.final_mtx );
 905
 906    mesh_bind( &player.mdl.player_meshes[cl_playermdl_id] );
 907    mesh_draw( &player.mdl.player_meshes[cl_playermdl_id] );
 908 }
 909
 910 VG_STATIC void player_do_motion(void)
 911 {
 912    if( world.water.enabled )
 913    {
 914       if( (player.rb.co[1] < 0.0f) && !player.is_dead )
 915       {
 916          audio_lock();
 917          audio_player_set_flags( &audio_player_extra, AUDIO_FLAG_SPACIAL_3D );
 918          audio_player_set_position( &audio_player_extra, player.rb.co );
 919          audio_player_set_vol( &audio_player_extra, 20.0f );
 920          audio_player_playclip( &audio_player_extra, &audio_splash );
 921          audio_unlock();
 922
 923          player_kill();
 924       }
 925    }
 926
 927    v3f prevco;
 928    v3_copy( player.rb.co, prevco );
 929
 930    if( player.controller == k_player_controller_skate )
 931    {
 932 #if 0
 933       player_skate_update();
 934 #endif
 935    }
 936    else
 937       player_walk_physics( &player_walky );
 938
 939
 940    /* Real angular velocity integration */
 941 #if 0
 942    v3_lerp( phys->rb.w, (v3f){0.0f,0.0f,0.0f}, 0.125f*0.5f, phys->rb.w );
 943    if( v3_length2( phys->rb.w ) > 0.0f )
 944    {
 945       v4f rotation;
 946       v3f axis;
 947       v3_copy( phys->rb.w, axis );
 948
 949       float mag = v3_length( axis );
 950       v3_divs( axis, mag, axis );
 951       q_axis_angle( rotation, axis, mag*k_rb_delta );
 952       q_mul( rotation, phys->rb.q, phys->rb.q );
 953    }
 954
 955    /* Faux angular velocity */
 956    v4f rotate;
 957
 958    float lerpq = (player_skate.activity == k_skate_activity_air)? 0.04f: 0.3f;
 959    phys->siY = vg_lerpf( phys->siY, phys->iY, lerpq );
 960
 961    q_axis_angle( rotate, phys->rb.up, phys->siY );
 962    q_mul( rotate, phys->rb.q, phys->rb.q );
 963    phys->iY = 0.0f;
 964 #endif
 965
 966    /*
 967     * Gate intersection, by tracing a line over the gate planes
 968     */
 969 #if 0
 970    for( int i=0; i<world.gate_count; i++ )
 971    {
 972       struct route_gate *rg = &world.gates[i];
 973       teleport_gate *gate = &rg->gate;
 974
 975       if( gate_intersect( gate, phys->rb.co, prevco ) )
 976       {
 977          m4x3_mulv( gate->transport, phys->rb.co, phys->rb.co );
 978          m4x3_mulv( gate->transport, phys->cog, phys->cog );
 979          m3x3_mulv( gate->transport, phys->cog_v, phys->cog_v );
 980          m3x3_mulv( gate->transport, phys->rb.v, phys->rb.v );
 981          m3x3_mulv( gate->transport, phys->vl, phys->vl );
 982          m3x3_mulv( gate->transport, phys->v_last, phys->v_last );
 983          m3x3_mulv( gate->transport, phys->m, phys->m );
 984          m3x3_mulv( gate->transport, phys->bob, phys->bob );
 985
 986          /* Pre-emptively edit the camera matrices so that the motion vectors
 987           * are correct */
 988          m4x3f transport_i;
 989          m4x4f transport_4;
 990          m4x3_invert_affine( gate->transport, transport_i );
 991          m4x3_expand( transport_i, transport_4 );
 992          m4x4_mul( main_camera.mtx.pv, transport_4, main_camera.mtx.pv );
 993          m4x4_mul( main_camera.mtx.v, transport_4, main_camera.mtx.v );
 994
 995          v4f transport_rotation;
 996          m3x3_q( gate->transport, transport_rotation );
 997          q_mul( transport_rotation, phys->rb.q, phys->rb.q );
 998
 999          world_routes_activate_gate( i );
1000
1001          if( phys->controller == k_player_controller_walk )
1002          {
1003             v3f fwd_dir = {cosf(player.angles[0]),
1004                            0.0f,
1005                            sinf(player.angles[0])};
1006             m3x3_mulv( gate->transport, fwd_dir, fwd_dir );
1007
1008             player.angles[0] = atan2f( fwd_dir[2], fwd_dir[0] );
1009          }
1010
1011          player.rewind_length = 0;
1012          player.rewind_total_length = 0.0f;
1013          player.rewind_incrementer = 10000;
1014          player_save_frame();
1015
1016          audio_lock();
1017          audio_play_oneshot( &audio_gate_pass, 1.0f );
1018          audio_unlock();
1019          break;
1020       }
1021    }
1022 #endif
1023
1024    rb_update_transform( &player.rb );
1025 }
1026
1027 /*
1028  * -----------------------------------------------------------------------------
1029  *                              API implementation
1030  * -----------------------------------------------------------------------------
1031  */
1032
1033 VG_STATIC float *player_get_pos(void)
1034 {
1035    return player.rb.co;
1036 }
1037
1038 VG_STATIC void player_kill(void)
1039 {
1040    if( player.death_tick_allowance == 0 )
1041    {
1042       player.is_dead = 1;
1043       player_ragdoll_copy_model( player.rb.v );
1044    }
1045 }
1046
1047 VG_STATIC float *player_cam_pos(void)
1048 {
1049    return player.camera_pos;
1050 }
1051
1052
1053 VG_STATIC void player_save_frame(void)
1054 {
1055    player.controller_frame = player.controller;
1056
1057    /* TODO         <interface>->save() */
1058 }
1059
1060 VG_STATIC void player_restore_frame(void)
1061 {
1062    player.controller = player.controller_frame;
1063
1064    /* TODO         <interface>->load() */
1065 }
1066
1067 #endif /* PLAYER_H */
1068 #endif