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,
  18    k_air_accelerate        = 20.0f,
  19
  20    k_runspeed              = 20.0f,
  21    k_board_radius          = 0.3f,
  22    k_board_length          = 0.45f,
  23    k_board_allowance       = 0.04f,
  24    //k_friction_lat          = 8.8f,
  25    k_friction_lat          = 12.0f,
  26    k_friction_resistance   = 0.01f,
  27    k_max_push_speed        = 16.0f,
  28    k_push_accel            = 10.0f,
  29    k_push_cycle_rate       = 8.0f,
  30    k_steer_ground          = 2.5f,
  31    k_steer_air             = 3.6f,
  32    k_steer_air_lerp        = 0.3f,
  33    k_pump_force            = 0.0f,
  34    k_downforce             = 5.0f,
  35    k_walk_downforce        = 8.0f,
  36    k_jump_charge_speed     = (1.0f/1.0f),
  37    k_jump_force            = 5.0f,
  38    k_pitch_limit           = 1.5f,
  39    k_look_speed            = 2.0f,
  40    k_walk_accel            = 150.0f,
  41    k_walk_friction         = 8.0f;
  42
  43 VG_STATIC int cl_playermdl_id = 0;
  44 VG_STATIC int freecam = 0;
  45 VG_STATIC int walk_grid_iterations = 1;
  46 VG_STATIC float fc_speed = 10.0f;
  47
  48 /*
  49  * -----------------------------------------------------------------------------
  50  *                                  Memory
  51  * -----------------------------------------------------------------------------
  52  */
  53
  54 VG_STATIC struct gplayer
  55 {
  56    /* Physics */
  57    rigidbody collide_front, collide_back;
  58
  59    struct player_phys
  60    {
  61       rigidbody rb, rb_gate_frame;
  62       float iY, siY;   /* Yaw inertia */
  63
  64       v3f a, v_last, m, bob, vl;
  65
  66       /* Utility */
  67       float vswitch, slip, slip_last,
  68             reverse;
  69
  70       float grab, jump, pushing, push_time;
  71       v2f grab_mouse_delta;
  72
  73       double start_push;
  74       int in_air, on_board, jump_charge, jump_dir;
  75
  76       m3x3f vr,vr_pstep;
  77    }
  78    phys,
  79    phys_gate_frame;
  80
  81    m4x3f visual_transform,
  82          inv_visual_transform;
  83
  84    int is_dead, death_tick_allowance, rewinding;
  85    int rewind_sound_wait;
  86
  87    v3f land_target;
  88    v3f land_target_log[22];
  89    u32 land_target_colours[22];
  90    int land_log_count;
  91
  92    v3f handl_target, handr_target,
  93        handl, handr;
  94
  95    /* Input */
  96    struct input_binding *input_js1h,
  97                         *input_js1v,
  98                         *input_js2h,
  99                         *input_js2v,
 100                         *input_jump,
 101                         *input_push,
 102                         *input_walk,
 103                         *input_walkh,
 104                         *input_walkv,
 105                         *input_switch_mode,
 106                         *input_reset,
 107                         *input_grab;
 108
 109    /* Camera */
 110    float air_blend;
 111    float air_time;
 112
 113    v3f camera_pos, smooth_localcam;
 114    v2f angles;
 115
 116    struct rewind_frame
 117    {
 118       v3f pos;
 119       v2f ang;
 120    }
 121    *rewind_buffer;
 122    u32 rewind_incrementer,
 123        rewind_length;
 124
 125    float rewind_time, rewind_total_length, rewind_predicted_time;
 126    double diag_rewind_start, diag_rewind_time;
 127    float dist_accum;
 128
 129    /* animation */
 130    double jump_time;
 131    float fslide,
 132          fdirz, fdirx,
 133          fstand,
 134          ffly,
 135          fpush,
 136          fairdir,
 137          fsetup,
 138          walk_timer,
 139          fjump,
 140          fonboard,
 141          frun;
 142
 143    float walk;
 144    int step_phase;
 145    enum mdl_surface_prop surface_prop;
 146
 147    /* player model */
 148    struct player_model
 149    {
 150       glmesh player_meshes[3];
 151
 152       mdl_context meta;
 153       struct skeleton sk;
 154       struct skeleton_anim *anim_stand,
 155                            *anim_highg,
 156                            *anim_slide,
 157                            *anim_air,
 158                            *anim_push, *anim_push_reverse,
 159                            *anim_ollie, *anim_ollie_reverse,
 160                            *anim_grabs, *anim_stop,
 161                            *anim_walk, *anim_run, *anim_idle,
 162                            *anim_jump;
 163
 164       u32 id_hip,
 165           id_ik_hand_l,
 166           id_ik_hand_r,
 167           id_ik_elbow_l,
 168           id_ik_elbow_r,
 169           id_head;
 170
 171       v3f cam_pos;
 172
 173       struct ragdoll_part
 174       {
 175          u32 bone_id;
 176          v3f offset;
 177
 178          u32 use_limits;
 179          v3f limits[2];
 180
 181          rigidbody  rb;
 182          u32 parent;
 183       }
 184       ragdoll[32];
 185       u32 ragdoll_count;
 186
 187       int shoes[2];
 188    }
 189    mdl;
 190 }
 191 player =
 192 {
 193    .collide_front = { .type = k_rb_shape_sphere, .inf.sphere.radius = 0.3f },
 194    .collide_back  = { .type = k_rb_shape_sphere, .inf.sphere.radius = 0.3f }
 195 };
 196
 197 /*
 198  * API
 199  */
 200 VG_STATIC float *player_get_pos(void);
 201 VG_STATIC void player_kill(void);
 202 VG_STATIC float *player_cam_pos(void);
 203 VG_STATIC void player_save_frame(void);
 204 VG_STATIC void player_restore_frame(void);
 205 VG_STATIC void player_save_rewind_frame(void);
 206
 207 /*
 208  * Submodules
 209  */
 210 VG_STATIC void player_mouseview(void);
 211
 212 #include "player_physics.h"
 213 #include "player_ragdoll.h"
 214 #include "player_model.h"
 215 #include "player_animation.h"
 216 #include "player_audio.h"
 217
 218 /*
 219  * -----------------------------------------------------------------------------
 220  *                                    Events
 221  * -----------------------------------------------------------------------------
 222  */
 223
 224 VG_STATIC void player_init(void)                                            /* 1 */
 225 {
 226    player.input_js1h = vg_create_named_input( "steer-h", k_input_type_axis );
 227    player.input_js1v = vg_create_named_input( "steer-v", k_input_type_axis );
 228    player.input_grab = vg_create_named_input( "grab", k_input_type_axis_norm );
 229    player.input_js2h = vg_create_named_input( "grab-h", k_input_type_axis );
 230    player.input_js2v = vg_create_named_input( "grab-v", k_input_type_axis );
 231    player.input_jump = vg_create_named_input( "jump", k_input_type_button );
 232    player.input_push = vg_create_named_input( "push", k_input_type_button );
 233    player.input_walk = vg_create_named_input( "walk", k_input_type_button );
 234
 235    player.input_walkh = vg_create_named_input( "walk-h",
 236                                                k_input_type_axis );
 237    player.input_walkv = vg_create_named_input( "walk-v",
 238                                                k_input_type_axis );
 239
 240
 241    player.input_switch_mode = vg_create_named_input( "switch-mode",
 242                                                      k_input_type_button );
 243    player.input_reset = vg_create_named_input( "reset", k_input_type_button );
 244
 245    const char *default_cfg[] =
 246    {
 247       "bind  steer-h gp-ls-h",
 248       "bind -steer-h a",
 249       "bind +steer-h d",
 250
 251       "bind  steer-v gp-ls-v",
 252       "bind -steer-v w",
 253       "bind +steer-v s",
 254
 255       "bind  grab gp-rt",
 256       "bind +grab shift",
 257       "bind  grab-h gp-rs-h",
 258       "bind  grab-v gp-rs-v",
 259
 260       "bind jump space",
 261       "bind jump gp-a",
 262
 263       "bind push gp-b",
 264       "bind push w",
 265
 266       "bind walk shift",
 267       "bind walk gp-ls",
 268
 269       "bind  walk-h  gp-ls-h",
 270       "bind  walk-v -gp-ls-v",
 271       "bind +walk-h d",
 272       "bind -walk-h a",
 273       "bind +walk-v w",
 274       "bind -walk-v s",
 275
 276       "bind reset gp-lb",
 277       "bind reset r",
 278
 279       "bind switch-mode gp-y",
 280       "bind switch-mode e",
 281    };
 282
 283    for( int i=0; i<vg_list_size(default_cfg); i++ )
 284       execute_console_input(default_cfg[i]);
 285
 286    rb_init( &player.phys.rb );
 287    rb_init( &player.collide_front );
 288    rb_init( &player.collide_back  );
 289
 290    vg_convar_push( (struct vg_convar){
 291       .name = "cl_playermdl_id",
 292       .data = &cl_playermdl_id,
 293       .data_type = k_convar_dtype_i32,
 294       .opt_i32 = { .min=0, .max=2, .clamp=1 },
 295       .persistent = 1
 296    });
 297
 298    vg_convar_push( (struct vg_convar){
 299       .name = "gwalk_speed",
 300       .data = &k_walkspeed,
 301       .data_type = k_convar_dtype_f32,
 302       .opt_f32 = { .clamp = 0 },
 303       .persistent = 0
 304    });
 305
 306    vg_convar_push( (struct vg_convar){
 307       .name = "air_accelerate",
 308       .data = &k_air_accelerate,
 309       .data_type = k_convar_dtype_f32,
 310       .opt_f32 = { .clamp = 0 },
 311       .persistent = 0
 312    });
 313
 314    vg_convar_push( (struct vg_convar){
 315       .name = "run_speed",
 316       .data = &k_runspeed,
 317       .data_type = k_convar_dtype_f32,
 318       .opt_f32 = { .clamp = 0 },
 319       .persistent = 1
 320    });
 321
 322    vg_convar_push( (struct vg_convar){
 323       .name = "walk_accel",
 324       .data = &k_walk_accel,
 325       .data_type = k_convar_dtype_f32,
 326       .opt_f32 = { .clamp = 0 },
 327       .persistent = 1
 328    });
 329
 330    vg_convar_push( (struct vg_convar){
 331       .name = "fc",
 332       .data = &freecam,
 333       .data_type = k_convar_dtype_i32,
 334       .opt_i32 = { .min=0, .max=1, .clamp=1 },
 335       .persistent = 1
 336    });
 337
 338    vg_convar_push( (struct vg_convar){
 339       .name = "fcs",
 340       .data = &fc_speed,
 341       .data_type = k_convar_dtype_f32,
 342       .opt_f32 = { .clamp = 0 },
 343       .persistent = 1
 344    });
 345
 346         vg_function_push( (struct vg_cmd){
 347                 .name = "reset",
 348                 .function = reset_player
 349         });
 350
 351    player.rewind_length = 0;
 352    player.rewind_buffer =
 353       vg_linear_alloc( vg_mem.rtmemory,
 354                        sizeof(struct rewind_frame) * PLAYER_REWIND_FRAMES );
 355
 356    player_model_init();
 357
 358    /* controls */
 359
 360 }
 361
 362 VG_STATIC void player_save_rewind_frame(void)
 363 {
 364    if( player.rewind_length < PLAYER_REWIND_FRAMES )
 365    {
 366       struct rewind_frame *fr =
 367          &player.rewind_buffer[ player.rewind_length ++ ];
 368
 369       v2_copy( player.angles, fr->ang );
 370       v3_copy( player.camera_pos, fr->pos );
 371
 372       player.rewind_incrementer = 0;
 373
 374       if( player.rewind_length > 1 )
 375       {
 376          player.rewind_total_length +=
 377             v3_dist( player.rewind_buffer[player.rewind_length-1].pos,
 378                      player.rewind_buffer[player.rewind_length-2].pos );
 379       }
 380    }
 381 }
 382
 383
 384 /* disaster */
 385 VG_STATIC int         menu_enabled(void);
 386 #include "menu.h"
 387
 388 /*
 389  * Free camera movement
 390  */
 391 VG_STATIC void player_mouseview(void)
 392 {
 393    if( menu_enabled() )
 394       return;
 395
 396    v2_muladds( player.angles, vg.mouse_delta, 0.0025f, player.angles );
 397
 398    if( vg.gamepad_use_trackpad_look )
 399    {
 400       static v2f last_input;
 401       static v2f vel;
 402       static v2f vel_smooth;
 403
 404       v2f input = { player.input_js2h->axis.value,
 405                     player.input_js2v->axis.value };
 406
 407       if( (v2_length2(last_input) > 0.001f) && (v2_length2(input) > 0.001f) )
 408       {
 409          v2_sub( input, last_input, vel );
 410          v2_muls( vel, 1.0f/vg.time_delta, vel );
 411       }
 412       else
 413       {
 414          v2_zero( vel );
 415       }
 416
 417       v2_lerp( vel_smooth, vel, vg.time_delta*8.0f, vel_smooth );
 418
 419       v2_muladds( player.angles, vel_smooth, vg.time_delta, player.angles );
 420       v2_copy( input, last_input );
 421    }
 422    else
 423    {
 424       player.angles[0] += player.input_js2h->axis.value * vg.time_delta * 4.0f;
 425       player.angles[1] += player.input_js2v->axis.value * vg.time_delta * 4.0f;
 426    }
 427
 428    player.angles[1] = vg_clampf( player.angles[1], -VG_PIf*0.5f, VG_PIf*0.5f );
 429 }
 430
 431 /* Deal with input etc */
 432 VG_STATIC void player_update_pre(void)
 433 {
 434    struct player_phys *phys = &player.phys;
 435
 436    if( player.rewinding )
 437    {
 438       return;
 439    }
 440
 441    if( vg_input_button_down( player.input_reset ) && !menu_enabled() )
 442    {
 443       if( player.is_dead )
 444       {
 445          reset_player( 0, NULL );
 446          audio_lock();
 447          audio_play_oneshot( &audio_ui[0], 1.0f );
 448          audio_unlock();
 449       }
 450       else
 451       {
 452          double delta = world.time - world.last_use;
 453
 454          if( (delta <= RESET_MAX_TIME) && (world.last_use != 0.0) )
 455          {
 456             player.rewinding = 1;
 457             player.rewind_sound_wait = 1;
 458             player.rewind_time = (float)player.rewind_length - 0.0001f;
 459             player_save_rewind_frame();
 460             audio_lock();
 461             audio_play_oneshot( &audio_rewind[0], 1.0f );
 462             audio_unlock();
 463
 464             /* based on analytical testing. DONT CHANGE!
 465              *
 466              *    time taken: y = (x^(4/5)) * 74.5
 467              *    inverse   : x = (2/149)^(4/5) * y^(4/5)
 468              */
 469
 470             float constant = powf( 2.0f/149.0f, 4.0f/5.0f ),
 471                   curve    = powf( player.rewind_total_length, 4.0f/5.0f );
 472
 473             player.rewind_predicted_time = constant * curve;
 474             player.diag_rewind_start = vg.time;
 475             player.diag_rewind_time  = player.rewind_time;
 476
 477             player.is_dead = 0;
 478             player.death_tick_allowance = 30;
 479             player_restore_frame();
 480
 481             if( !phys->on_board )
 482             {
 483                player.angles[0] = atan2f( -phys->rb.forward[2],
 484                                           -phys->rb.forward[0] );
 485             }
 486
 487             player.mdl.shoes[0] = 1;
 488             player.mdl.shoes[1] = 1;
 489
 490             world_routes_notify_reset();
 491
 492             /* apply 1 frame of movement */
 493             player_do_motion();
 494          }
 495          else
 496          {
 497             /* cant do that */
 498             audio_lock();
 499             audio_play_oneshot( &audio_rewind[4], 1.0f );
 500             audio_unlock();
 501          }
 502       }
 503    }
 504
 505    if( vg_input_button_down( player.input_switch_mode ) && !menu_enabled() )
 506    {
 507       phys->on_board ^= 0x1;
 508
 509       audio_lock();
 510       if( phys->on_board )
 511       {
 512          v3_muladds( phys->rb.v, phys->rb.forward, 0.2f, phys->rb.v );
 513          audio_play_oneshot( &audio_lands[6], 1.0f );
 514       }
 515       else
 516       {
 517          audio_play_oneshot( &audio_lands[5], 1.0f );
 518       }
 519
 520       audio_unlock();
 521    }
 522
 523    if( !phys->on_board )
 524       player_mouseview();
 525 }
 526
 527 VG_STATIC void player_update_fixed(void)                                 /* 2 */
 528 {
 529    if( player.rewinding )
 530       return;
 531
 532    if( player.death_tick_allowance )
 533       player.death_tick_allowance --;
 534
 535    struct player_phys *phys = &player.phys;
 536
 537    if( player.is_dead )
 538    {
 539       player_ragdoll_iter();
 540    }
 541    else
 542    {
 543       player.rewind_incrementer ++;
 544
 545       if( player.rewind_incrementer > (u32)(0.25/VG_TIMESTEP_FIXED) )
 546       {
 547          player_save_rewind_frame();
 548       }
 549
 550       player_do_motion();
 551    }
 552 }
 553
 554 VG_STATIC void player_update_post(void)
 555 {
 556    for( int i=0; i<player.land_log_count; i++ )
 557       vg_line_cross( player.land_target_log[i],
 558             player.land_target_colours[i], 0.25f);
 559
 560    if( player.is_dead )
 561    {
 562       player_debug_ragdoll();
 563
 564       if( !freecam )
 565          player_animate_death_cam();
 566    }
 567    else
 568    {
 569       player_animate();
 570
 571       if( !freecam )
 572          player_animate_camera();
 573    }
 574
 575    if( freecam )
 576       player_freecam();
 577
 578
 579    /* CAMERA POSITIONING: LAYER 0 */
 580    v2_copy( player.angles, camera_angles );
 581    v3_copy( player.camera_pos, camera_pos );
 582
 583    if( player.rewinding )
 584    {
 585       if( player.rewind_time <= 0.0f )
 586       {
 587          double taken = vg.time - player.diag_rewind_start;
 588          vg_success( "Rewind took (rt, pl, tl): %f, %f, %f\n",
 589                            taken, player.diag_rewind_time,
 590                            player.rewind_total_length );
 591
 592          player.rewinding = 0;
 593          player.rewind_length = 1;
 594          player.rewind_total_length = 0.0f;
 595          player.rewind_incrementer = 0;
 596          world.sky_target_rate = 1.0;
 597       }
 598       else
 599       {
 600          world.sky_target_rate = -100.0;
 601          assert( player.rewind_length > 0 );
 602
 603          v2f override_angles;
 604          v3f override_pos;
 605
 606          float budget         = vg.time_delta,
 607                overall_length = player.rewind_length;
 608
 609          world_routes_rollback_time( player.rewind_time / overall_length );
 610
 611          for( int i=0; (i<10)&&(player.rewind_time>0.0f)&&(budget>0.0f); i ++ )
 612          {
 613             /* Interpolate frames */
 614             int i0 = floorf( player.rewind_time ),
 615                 i1 = VG_MIN( i0+1, player.rewind_length-1 );
 616
 617             struct rewind_frame *fr =  &player.rewind_buffer[i0],
 618                                 *fr1 = &player.rewind_buffer[i1];
 619
 620             float dist = vg_maxf( v3_dist( fr->pos, fr1->pos ), 0.001f ),
 621                   subl = vg_fractf( player.rewind_time ) + 0.001f,
 622
 623                   sramp= 3.0f-(1.0f/(0.4f+0.4f*player.rewind_time)),
 624                   speed = sramp*28.0f + 0.5f*player.rewind_time,
 625                   mod  = speed * (budget / dist),
 626
 627                   advl = vg_minf( mod, subl ),
 628                   advt = (advl / mod) * budget;
 629
 630             player.dist_accum += speed * advt;
 631             player.rewind_time -= advl;
 632             budget -= advt;
 633          }
 634
 635          player.rewind_time = vg_maxf( 0.0f, player.rewind_time );
 636
 637          float current_time = vg.time - player.diag_rewind_start,
 638                remaining    = player.rewind_predicted_time - current_time;
 639
 640          if( player.rewind_sound_wait )
 641          {
 642             if( player.rewind_predicted_time >= 6.5f )
 643             {
 644                if( remaining <= 6.5f )
 645                {
 646                   audio_lock();
 647                   audio_play_oneshot( &audio_rewind[3], 1.0f );
 648                   audio_unlock();
 649                   player.rewind_sound_wait = 0;
 650                }
 651             }
 652             else if( player.rewind_predicted_time >= 2.5f )
 653             {
 654                if( remaining <= 2.5f )
 655                {
 656                   audio_lock();
 657                   audio_play_oneshot( &audio_rewind[2], 1.0f );
 658                   audio_unlock();
 659                   player.rewind_sound_wait = 0;
 660                }
 661             }
 662             else if( player.rewind_predicted_time >= 1.5f )
 663             {
 664                if( remaining <= 1.5f )
 665                {
 666                   audio_lock();
 667                   audio_play_oneshot( &audio_rewind[1], 1.0f );
 668                   audio_unlock();
 669                   player.rewind_sound_wait = 0;
 670                }
 671             }
 672
 673
 674          }
 675
 676          int i0 = floorf( player.rewind_time ),
 677              i1 = VG_MIN( i0+1, player.rewind_length-1 );
 678
 679          struct rewind_frame *fr =  &player.rewind_buffer[i0],
 680                              *fr1 = &player.rewind_buffer[i1];
 681
 682          float sub = vg_fractf(player.rewind_time);
 683
 684          v3_lerp( fr->pos, fr1->pos, sub, override_pos );
 685          override_angles[0] = vg_alerpf( fr->ang[0], fr1->ang[0], sub );
 686          override_angles[1] = vg_lerpf ( fr->ang[1], fr1->ang[1], sub );
 687
 688          /* CAMERA POSITIONING: LAYER 1 */
 689          float blend = (4.0f-player.rewind_time) * 0.25f,
 690                c     = vg_clampf( blend, 0.0f, 1.0f );
 691
 692          camera_angles[0] = vg_alerpf(override_angles[0], player.angles[0], c);
 693          camera_angles[1] = vg_lerpf (override_angles[1], player.angles[1], c);
 694          v3_lerp( override_pos, player.camera_pos, c, camera_pos );
 695       }
 696    }
 697
 698    camera_update();
 699    player_audio();
 700 }
 701
 702 VG_STATIC void draw_player( m4x3f cam )
 703 {
 704    if( player.is_dead )
 705       player_model_copy_ragdoll();
 706
 707    shader_viewchar_use();
 708    vg_tex2d_bind( &tex_characters, 0 );
 709    shader_viewchar_uTexMain( 0 );
 710    shader_viewchar_uCamera( cam[3] );
 711    shader_viewchar_uPv( vg.pv );
 712    shader_link_standard_ub( _shader_viewchar.id, 2 );
 713    glUniformMatrix4x3fv( _uniform_viewchar_uTransforms,
 714                          player.mdl.sk.bone_count,
 715                          0,
 716                          (float *)player.mdl.sk.final_mtx );
 717
 718    mesh_bind( &player.mdl.player_meshes[cl_playermdl_id] );
 719    mesh_draw( &player.mdl.player_meshes[cl_playermdl_id] );
 720 }
 721
 722 /*
 723  * -----------------------------------------------------------------------------
 724  *                              API implementation
 725  * -----------------------------------------------------------------------------
 726  */
 727
 728 VG_STATIC float *player_get_pos(void)
 729 {
 730    return player.phys.rb.co;
 731 }
 732
 733 VG_STATIC void player_kill(void)
 734 {
 735    if( player.death_tick_allowance == 0 )
 736    {
 737       player.is_dead = 1;
 738       player_ragdoll_copy_model( player.phys.rb.v );
 739       world_routes_clear();
 740    }
 741 }
 742
 743 VG_STATIC float *player_cam_pos(void)
 744 {
 745    return player.camera_pos;
 746 }
 747
 748
 749 #endif /* PLAYER_H */