player.h

   1 /*
   2  * Copyright (C) 2021-2022 Mt.ZERO Software, Harry Godden - All Rights Reserved
   3  */
   4
   5 #ifndef PLAYER_H
   6 #define PLAYER_H
   7
   8 #define PLAYER_REWIND_FRAMES 60*4
   9
  10 #include "audio.h"
  11 #include "common.h"
  12 #include "world.h"
  13 #include "skeleton.h"
  14 #include "bvh.h"
  15
  16 VG_STATIC float
  17    k_walkspeed             = 12.0f,  /* no longer used */
  18    k_runspeed              = 20.0f,
  19    k_board_radius          = 0.3f,
  20    k_board_length          = 0.45f,
  21    k_board_allowance       = 0.04f,
  22    //k_friction_lat          = 8.8f,
  23    k_friction_lat          = 12.0f,
  24    k_friction_resistance   = 0.01f,
  25    k_max_push_speed        = 16.0f,
  26    k_push_accel            = 10.0f,
  27    k_push_cycle_rate       = 8.0f,
  28    k_steer_ground          = 2.5f,
  29    k_steer_air             = 3.6f,
  30    k_steer_air_lerp        = 0.3f,
  31    k_pump_force            = 0.0f,
  32    k_downforce             = 5.0f,
  33    k_walk_downforce        = 8.0f,
  34    k_jump_charge_speed     = (1.0f/1.0f),
  35    k_jump_force            = 5.0f,
  36    k_pitch_limit           = 1.5f,
  37    k_look_speed            = 2.0f,
  38    k_walk_accel            = 150.0f,
  39    k_walk_friction         = 8.0f;
  40
  41 VG_STATIC int cl_playermdl_id = 0;
  42 VG_STATIC int freecam = 0;
  43 VG_STATIC int walk_grid_iterations = 1;
  44 VG_STATIC float fc_speed = 10.0f;
  45
  46 /*
  47  * -----------------------------------------------------------------------------
  48  *                                  Memory
  49  * -----------------------------------------------------------------------------
  50  */
  51
  52 VG_STATIC struct gplayer
  53 {
  54    /* Physics */
  55    rigidbody collide_front, collide_back;
  56
  57    struct player_phys
  58    {
  59       rigidbody rb, rb_gate_frame;
  60       float iY, siY;   /* Yaw inertia */
  61
  62       v3f a, v_last, m, bob, vl;
  63
  64       /* Utility */
  65       float vswitch, slip, slip_last,
  66             reverse;
  67
  68       float grab, jump, pushing, push_time;
  69       v2f grab_mouse_delta;
  70
  71       double start_push;
  72       int in_air, on_board, jump_charge, jump_dir;
  73
  74       m3x3f vr,vr_pstep;
  75    }
  76    phys,
  77    phys_gate_frame;
  78
  79    m4x3f visual_transform,
  80          inv_visual_transform;
  81
  82    int is_dead, death_tick_allowance, rewinding;
  83    int rewind_sound_wait;
  84
  85    v3f land_target;
  86    v3f land_target_log[22];
  87    u32 land_target_colours[22];
  88    int land_log_count;
  89
  90    v3f handl_target, handr_target,
  91        handl, handr;
  92
  93    /* Input */
  94    struct input_binding *input_js1h,
  95                         *input_js1v,
  96                         *input_js2h,
  97                         *input_js2v,
  98                         *input_jump,
  99                         *input_push,
 100                         *input_walk,
 101                         *input_walkh,
 102                         *input_walkv,
 103                         *input_switch_mode,
 104                         *input_reset,
 105                         *input_grab;
 106
 107    /* Camera */
 108    float air_blend;
 109    float air_time;
 110
 111    v3f camera_pos, smooth_localcam;
 112    v2f angles;
 113
 114    struct rewind_frame
 115    {
 116       v3f pos;
 117       v2f ang;
 118    }
 119    *rewind_buffer;
 120    u32 rewind_incrementer,
 121        rewind_length;
 122
 123    float rewind_time, rewind_total_length, rewind_predicted_time;
 124    double diag_rewind_start, diag_rewind_time;
 125    float dist_accum;
 126
 127    /* animation */
 128    double jump_time;
 129    float fslide,
 130          fdirz, fdirx,
 131          fstand,
 132          ffly,
 133          fpush,
 134          fairdir,
 135          fsetup,
 136          walk_timer,
 137          fjump,
 138          fonboard,
 139          frun;
 140
 141    float walk;
 142    int step_phase;
 143    enum mdl_surface_prop surface_prop;
 144
 145    /* player model */
 146    struct player_model
 147    {
 148       glmesh player_meshes[3];
 149
 150       mdl_context meta;
 151       struct skeleton sk;
 152       struct skeleton_anim *anim_stand,
 153                            *anim_highg,
 154                            *anim_slide,
 155                            *anim_air,
 156                            *anim_push, *anim_push_reverse,
 157                            *anim_ollie, *anim_ollie_reverse,
 158                            *anim_grabs, *anim_stop,
 159                            *anim_walk, *anim_run, *anim_idle,
 160                            *anim_jump;
 161
 162       u32 id_hip,
 163           id_ik_hand_l,
 164           id_ik_hand_r,
 165           id_ik_elbow_l,
 166           id_ik_elbow_r,
 167           id_head;
 168
 169       v3f cam_pos;
 170
 171       struct ragdoll_part
 172       {
 173          u32 bone_id;
 174          v3f offset;
 175
 176          u32 use_limits;
 177          v3f limits[2];
 178
 179          rigidbody  rb;
 180          u32 parent;
 181       }
 182       ragdoll[32];
 183       u32 ragdoll_count;
 184
 185       int shoes[2];
 186    }
 187    mdl;
 188 }
 189 player =
 190 {
 191    .collide_front = { .type = k_rb_shape_sphere, .inf.sphere.radius = 0.3f },
 192    .collide_back  = { .type = k_rb_shape_sphere, .inf.sphere.radius = 0.3f }
 193 };
 194
 195 /*
 196  * API
 197  */
 198 VG_STATIC float *player_get_pos(void);
 199 VG_STATIC void player_kill(void);
 200 VG_STATIC float *player_cam_pos(void);
 201 VG_STATIC void player_save_frame(void);
 202 VG_STATIC void player_restore_frame(void);
 203 VG_STATIC void player_save_rewind_frame(void);
 204
 205 /*
 206  * Submodules
 207  */
 208 VG_STATIC void player_mouseview(void);
 209
 210 #include "player_physics.h"
 211 #include "player_ragdoll.h"
 212 #include "player_model.h"
 213 #include "player_animation.h"
 214 #include "player_audio.h"
 215
 216 /*
 217  * -----------------------------------------------------------------------------
 218  *                                    Events
 219  * -----------------------------------------------------------------------------
 220  */
 221
 222 VG_STATIC void player_init(void)                                            /* 1 */
 223 {
 224    player.input_js1h = vg_create_named_input( "steer-h", k_input_type_axis );
 225    player.input_js1v = vg_create_named_input( "steer-v", k_input_type_axis );
 226    player.input_grab = vg_create_named_input( "grab", k_input_type_axis_norm );
 227    player.input_js2h = vg_create_named_input( "grab-h", k_input_type_axis );
 228    player.input_js2v = vg_create_named_input( "grab-v", k_input_type_axis );
 229    player.input_jump = vg_create_named_input( "jump", k_input_type_button );
 230    player.input_push = vg_create_named_input( "push", k_input_type_button );
 231    player.input_walk = vg_create_named_input( "walk", k_input_type_button );
 232
 233    player.input_walkh = vg_create_named_input( "walk-h",
 234                                                k_input_type_axis );
 235    player.input_walkv = vg_create_named_input( "walk-v",
 236                                                k_input_type_axis );
 237
 238
 239    player.input_switch_mode = vg_create_named_input( "switch-mode",
 240                                                      k_input_type_button );
 241    player.input_reset = vg_create_named_input( "reset", k_input_type_button );
 242
 243    const char *default_cfg[] =
 244    {
 245       "bind  steer-h gp-ls-h",
 246       "bind -steer-h a",
 247       "bind +steer-h d",
 248
 249       "bind  steer-v gp-ls-v",
 250       "bind -steer-v w",
 251       "bind +steer-v s",
 252
 253       "bind  grab gp-rt",
 254       "bind +grab shift",
 255       "bind  grab-h gp-rs-h",
 256       "bind  grab-v gp-rs-v",
 257
 258       "bind jump space",
 259       "bind jump gp-a",
 260
 261       "bind push gp-b",
 262       "bind push w",
 263
 264       "bind walk shift",
 265       "bind walk gp-ls",
 266
 267       "bind  walk-h  gp-ls-h",
 268       "bind  walk-v -gp-ls-v",
 269       "bind +walk-h d",
 270       "bind -walk-h a",
 271       "bind +walk-v w",
 272       "bind -walk-v s",
 273
 274       "bind reset gp-lb",
 275       "bind reset r",
 276
 277       "bind switch-mode gp-y",
 278       "bind switch-mode e",
 279    };
 280
 281    for( int i=0; i<vg_list_size(default_cfg); i++ )
 282       execute_console_input(default_cfg[i]);
 283
 284    rb_init( &player.phys.rb );
 285    rb_init( &player.collide_front );
 286    rb_init( &player.collide_back  );
 287
 288    vg_convar_push( (struct vg_convar){
 289       .name = "cl_playermdl_id",
 290       .data = &cl_playermdl_id,
 291       .data_type = k_convar_dtype_i32,
 292       .opt_i32 = { .min=0, .max=2, .clamp=1 },
 293       .persistent = 1
 294    });
 295
 296    vg_convar_push( (struct vg_convar){
 297       .name = "walk_speed",
 298       .data = &k_walkspeed,
 299       .data_type = k_convar_dtype_f32,
 300       .opt_f32 = { .clamp = 0 },
 301       .persistent = 0
 302    });
 303
 304    vg_convar_push( (struct vg_convar){
 305       .name = "run_speed",
 306       .data = &k_runspeed,
 307       .data_type = k_convar_dtype_f32,
 308       .opt_f32 = { .clamp = 0 },
 309       .persistent = 1
 310    });
 311
 312    vg_convar_push( (struct vg_convar){
 313       .name = "walk_accel",
 314       .data = &k_walk_accel,
 315       .data_type = k_convar_dtype_f32,
 316       .opt_f32 = { .clamp = 0 },
 317       .persistent = 1
 318    });
 319
 320    vg_convar_push( (struct vg_convar){
 321       .name = "fc",
 322       .data = &freecam,
 323       .data_type = k_convar_dtype_i32,
 324       .opt_i32 = { .min=0, .max=1, .clamp=1 },
 325       .persistent = 1
 326    });
 327
 328    vg_convar_push( (struct vg_convar){
 329       .name = "fcs",
 330       .data = &fc_speed,
 331       .data_type = k_convar_dtype_f32,
 332       .opt_f32 = { .clamp = 0 },
 333       .persistent = 1
 334    });
 335
 336         vg_function_push( (struct vg_cmd){
 337                 .name = "reset",
 338                 .function = reset_player
 339         });
 340
 341    player.rewind_length = 0;
 342    player.rewind_buffer =
 343       vg_linear_alloc( vg_mem.rtmemory,
 344                        sizeof(struct rewind_frame) * PLAYER_REWIND_FRAMES );
 345
 346    player_model_init();
 347
 348    /* controls */
 349
 350 }
 351
 352 VG_STATIC void player_save_rewind_frame(void)
 353 {
 354    if( player.rewind_length < PLAYER_REWIND_FRAMES )
 355    {
 356       struct rewind_frame *fr =
 357          &player.rewind_buffer[ player.rewind_length ++ ];
 358
 359       v2_copy( player.angles, fr->ang );
 360       v3_copy( player.camera_pos, fr->pos );
 361
 362       player.rewind_incrementer = 0;
 363
 364       if( player.rewind_length > 1 )
 365       {
 366          player.rewind_total_length +=
 367             v3_dist( player.rewind_buffer[player.rewind_length-1].pos,
 368                      player.rewind_buffer[player.rewind_length-2].pos );
 369       }
 370    }
 371 }
 372
 373
 374 /* disaster */
 375 VG_STATIC int         menu_enabled(void);
 376 #include "menu.h"
 377
 378 /*
 379  * Free camera movement
 380  */
 381 VG_STATIC void player_mouseview(void)
 382 {
 383    if( menu_enabled() )
 384       return;
 385
 386    v2_muladds( player.angles, vg.mouse_delta, 0.0025f, player.angles );
 387
 388    if( vg.gamepad_use_trackpad_look )
 389    {
 390       static v2f last_input;
 391       static v2f vel;
 392       static v2f vel_smooth;
 393
 394       v2f input = { player.input_js2h->axis.value,
 395                     player.input_js2v->axis.value };
 396
 397       if( (v2_length2(last_input) > 0.001f) && (v2_length2(input) > 0.001f) )
 398       {
 399          v2_sub( input, last_input, vel );
 400          v2_muls( vel, 1.0f/vg.time_delta, vel );
 401       }
 402       else
 403       {
 404          v2_zero( vel );
 405       }
 406
 407       v2_lerp( vel_smooth, vel, vg.time_delta*8.0f, vel_smooth );
 408
 409       v2_muladds( player.angles, vel_smooth, vg.time_delta, player.angles );
 410       v2_copy( input, last_input );
 411    }
 412    else
 413    {
 414       player.angles[0] += player.input_js2h->axis.value * vg.time_delta * 4.0f;
 415       player.angles[1] += player.input_js2v->axis.value * vg.time_delta * 4.0f;
 416    }
 417
 418    player.angles[1] = vg_clampf( player.angles[1], -VG_PIf*0.5f, VG_PIf*0.5f );
 419 }
 420
 421 /* Deal with input etc */
 422 VG_STATIC void player_update_pre(void)
 423 {
 424    struct player_phys *phys = &player.phys;
 425
 426    if( player.rewinding )
 427    {
 428       return;
 429    }
 430
 431    if( vg_input_button_down( player.input_reset ) && !menu_enabled() )
 432    {
 433       if( player.is_dead )
 434       {
 435          reset_player( 0, NULL );
 436          audio_lock();
 437          audio_play_oneshot( &audio_ui[0], 1.0f );
 438          audio_unlock();
 439       }
 440       else
 441       {
 442          double delta = world.time - world.last_use;
 443
 444          if( (delta <= RESET_MAX_TIME) && (world.last_use != 0.0) )
 445          {
 446             player.rewinding = 1;
 447             player.rewind_sound_wait = 1;
 448             player.rewind_time = (float)player.rewind_length - 0.0001f;
 449             player_save_rewind_frame();
 450             audio_lock();
 451             audio_play_oneshot( &audio_rewind[0], 1.0f );
 452             audio_unlock();
 453
 454             /* based on analytical testing. DONT CHANGE!
 455              *
 456              *    time taken: y = (x^(4/5)) * 74.5
 457              *    inverse   : x = (2/149)^(4/5) * y^(4/5)
 458              */
 459
 460             float constant = powf( 2.0f/149.0f, 4.0f/5.0f ),
 461                   curve    = powf( player.rewind_total_length, 4.0f/5.0f );
 462
 463             player.rewind_predicted_time = constant * curve;
 464             player.diag_rewind_start = vg.time;
 465             player.diag_rewind_time  = player.rewind_time;
 466
 467             player.is_dead = 0;
 468             player.death_tick_allowance = 30;
 469             player_restore_frame();
 470
 471             if( !phys->on_board )
 472             {
 473                player.angles[0] = atan2f( -phys->rb.forward[2],
 474                                           -phys->rb.forward[0] );
 475             }
 476
 477             player.mdl.shoes[0] = 1;
 478             player.mdl.shoes[1] = 1;
 479
 480             world_routes_notify_reset();
 481
 482             /* apply 1 frame of movement */
 483             player_do_motion();
 484          }
 485          else
 486          {
 487             /* cant do that */
 488             audio_lock();
 489             audio_play_oneshot( &audio_rewind[4], 1.0f );
 490             audio_unlock();
 491          }
 492       }
 493    }
 494
 495    if( vg_input_button_down( player.input_switch_mode ) && !menu_enabled() )
 496    {
 497       phys->on_board ^= 0x1;
 498
 499       audio_lock();
 500       if( phys->on_board )
 501       {
 502          v3_muladds( phys->rb.v, phys->rb.forward, 0.2f, phys->rb.v );
 503          audio_play_oneshot( &audio_lands[6], 1.0f );
 504       }
 505       else
 506       {
 507          audio_play_oneshot( &audio_lands[5], 1.0f );
 508       }
 509
 510       audio_unlock();
 511    }
 512
 513    if( !phys->on_board )
 514       player_mouseview();
 515 }
 516
 517 VG_STATIC void player_update_fixed(void)                                 /* 2 */
 518 {
 519    if( player.rewinding )
 520       return;
 521
 522    if( player.death_tick_allowance )
 523       player.death_tick_allowance --;
 524
 525    struct player_phys *phys = &player.phys;
 526
 527    if( player.is_dead )
 528    {
 529       player_ragdoll_iter();
 530    }
 531    else
 532    {
 533       player.rewind_incrementer ++;
 534
 535       if( player.rewind_incrementer > (u32)(0.25/VG_TIMESTEP_FIXED) )
 536       {
 537          player_save_rewind_frame();
 538       }
 539
 540       player_do_motion();
 541    }
 542 }
 543
 544 VG_STATIC void player_update_post(void)
 545 {
 546    for( int i=0; i<player.land_log_count; i++ )
 547       vg_line_cross( player.land_target_log[i],
 548             player.land_target_colours[i], 0.25f);
 549
 550    if( player.is_dead )
 551    {
 552       player_debug_ragdoll();
 553
 554       if( !freecam )
 555          player_animate_death_cam();
 556    }
 557    else
 558    {
 559       player_animate();
 560
 561       if( !freecam )
 562          player_animate_camera();
 563    }
 564
 565    if( freecam )
 566       player_freecam();
 567
 568
 569    /* CAMERA POSITIONING: LAYER 0 */
 570    v2_copy( player.angles, camera_angles );
 571    v3_copy( player.camera_pos, camera_pos );
 572
 573    if( player.rewinding )
 574    {
 575       if( player.rewind_time <= 0.0f )
 576       {
 577          double taken = vg.time - player.diag_rewind_start;
 578          vg_success( "Rewind took (rt, pl, tl): %f, %f, %f\n",
 579                            taken, player.diag_rewind_time,
 580                            player.rewind_total_length );
 581
 582          player.rewinding = 0;
 583          player.rewind_length = 1;
 584          player.rewind_total_length = 0.0f;
 585          player.rewind_incrementer = 0;
 586          world.sky_target_rate = 1.0;
 587       }
 588       else
 589       {
 590          world.sky_target_rate = -100.0;
 591          assert( player.rewind_length > 0 );
 592
 593          v2f override_angles;
 594          v3f override_pos;
 595
 596          float budget         = vg.time_delta,
 597                overall_length = player.rewind_length;
 598
 599          world_routes_rollback_time( player.rewind_time / overall_length );
 600
 601          for( int i=0; (i<10)&&(player.rewind_time>0.0f)&&(budget>0.0f); i ++ )
 602          {
 603             /* Interpolate frames */
 604             int i0 = floorf( player.rewind_time ),
 605                 i1 = VG_MIN( i0+1, player.rewind_length-1 );
 606
 607             struct rewind_frame *fr =  &player.rewind_buffer[i0],
 608                                 *fr1 = &player.rewind_buffer[i1];
 609
 610             float dist = vg_maxf( v3_dist( fr->pos, fr1->pos ), 0.001f ),
 611                   subl = vg_fractf( player.rewind_time ) + 0.001f,
 612
 613                   sramp= 3.0f-(1.0f/(0.4f+0.4f*player.rewind_time)),
 614                   speed = sramp*28.0f + 0.5f*player.rewind_time,
 615                   mod  = speed * (budget / dist),
 616
 617                   advl = vg_minf( mod, subl ),
 618                   advt = (advl / mod) * budget;
 619
 620             player.dist_accum += speed * advt;
 621             player.rewind_time -= advl;
 622             budget -= advt;
 623          }
 624
 625          player.rewind_time = vg_maxf( 0.0f, player.rewind_time );
 626
 627          float current_time = vg.time - player.diag_rewind_start,
 628                remaining    = player.rewind_predicted_time - current_time;
 629
 630          if( player.rewind_sound_wait )
 631          {
 632             if( player.rewind_predicted_time >= 6.5f )
 633             {
 634                if( remaining <= 6.5f )
 635                {
 636                   audio_lock();
 637                   audio_play_oneshot( &audio_rewind[3], 1.0f );
 638                   audio_unlock();
 639                   player.rewind_sound_wait = 0;
 640                }
 641             }
 642             else if( player.rewind_predicted_time >= 2.5f )
 643             {
 644                if( remaining <= 2.5f )
 645                {
 646                   audio_lock();
 647                   audio_play_oneshot( &audio_rewind[2], 1.0f );
 648                   audio_unlock();
 649                   player.rewind_sound_wait = 0;
 650                }
 651             }
 652             else if( player.rewind_predicted_time >= 1.5f )
 653             {
 654                if( remaining <= 1.5f )
 655                {
 656                   audio_lock();
 657                   audio_play_oneshot( &audio_rewind[1], 1.0f );
 658                   audio_unlock();
 659                   player.rewind_sound_wait = 0;
 660                }
 661             }
 662
 663
 664          }
 665
 666          int i0 = floorf( player.rewind_time ),
 667              i1 = VG_MIN( i0+1, player.rewind_length-1 );
 668
 669          struct rewind_frame *fr =  &player.rewind_buffer[i0],
 670                              *fr1 = &player.rewind_buffer[i1];
 671
 672          float sub = vg_fractf(player.rewind_time);
 673
 674          v3_lerp( fr->pos, fr1->pos, sub, override_pos );
 675          override_angles[0] = vg_alerpf( fr->ang[0], fr1->ang[0], sub );
 676          override_angles[1] = vg_lerpf ( fr->ang[1], fr1->ang[1], sub );
 677
 678          /* CAMERA POSITIONING: LAYER 1 */
 679          float blend = (4.0f-player.rewind_time) * 0.25f,
 680                c     = vg_clampf( blend, 0.0f, 1.0f );
 681
 682          camera_angles[0] = vg_alerpf(override_angles[0], player.angles[0], c);
 683          camera_angles[1] = vg_lerpf (override_angles[1], player.angles[1], c);
 684          v3_lerp( override_pos, player.camera_pos, c, camera_pos );
 685       }
 686    }
 687
 688    camera_update();
 689    player_audio();
 690 }
 691
 692 VG_STATIC void draw_player( m4x3f cam )
 693 {
 694    if( player.is_dead )
 695       player_model_copy_ragdoll();
 696
 697    shader_viewchar_use();
 698    vg_tex2d_bind( &tex_characters, 0 );
 699    shader_viewchar_uTexMain( 0 );
 700    shader_viewchar_uCamera( cam[3] );
 701    shader_viewchar_uPv( vg.pv );
 702    shader_link_standard_ub( _shader_viewchar.id, 2 );
 703    glUniformMatrix4x3fv( _uniform_viewchar_uTransforms,
 704                          player.mdl.sk.bone_count,
 705                          0,
 706                          (float *)player.mdl.sk.final_mtx );
 707
 708    mesh_bind( &player.mdl.player_meshes[cl_playermdl_id] );
 709    mesh_draw( &player.mdl.player_meshes[cl_playermdl_id] );
 710 }
 711
 712 /*
 713  * -----------------------------------------------------------------------------
 714  *                              API implementation
 715  * -----------------------------------------------------------------------------
 716  */
 717
 718 VG_STATIC float *player_get_pos(void)
 719 {
 720    return player.phys.rb.co;
 721 }
 722
 723 VG_STATIC void player_kill(void)
 724 {
 725    if( player.death_tick_allowance == 0 )
 726    {
 727       player.is_dead = 1;
 728       player_ragdoll_copy_model( player.phys.rb.v );
 729       world_routes_clear();
 730    }
 731 }
 732
 733 VG_STATIC float *player_cam_pos(void)
 734 {
 735    return player.camera_pos;
 736 }
 737
 738
 739 #endif /* PLAYER_H */