player.h

   1 /*
   2  * Copyright (C) 2021-2022 Mt.ZERO Software, Harry Godden - All Rights Reserved
   3  */
   4
   5 /*
   6  * TODO: Tilt camera down to face borde when its behind you or out of vision
   7  */
   8
   9 #ifndef PLAYER_H
  10 #define PLAYER_H
  11
  12 #define PLAYER_REWIND_FRAMES 60*4
  13
  14 #include "conf.h"
  15 #include "audio.h"
  16 #include "common.h"
  17 #include "world.h"
  18 #include "skeleton.h"
  19 #include "bvh.h"
  20
  21 VG_STATIC float
  22    k_walkspeed             = 12.0f,
  23    k_air_accelerate        = 20.0f,
  24
  25    k_runspeed              = 20.0f,
  26    k_board_radius          = 0.3f,
  27    k_board_length          = 0.45f,
  28    k_board_allowance       = 0.04f,
  29    //k_friction_lat          = 8.8f,
  30    k_friction_lat          = 12.0f,
  31    k_friction_resistance   = 0.01f,
  32    k_max_push_speed        = 16.0f,
  33    k_push_accel            = 10.0f,
  34    k_push_cycle_rate       = 8.0f,
  35    k_steer_ground          = 2.5f,
  36    k_steer_air             = 3.6f,
  37    k_steer_air_lerp        = 0.3f,
  38    k_pump_force            = 0.0f,
  39    k_downforce             = 8.0f,
  40    k_walk_downforce        = 8.0f,
  41    k_jump_charge_speed     = (1.0f/1.0f),
  42    k_jump_force            = 5.0f,
  43    k_pitch_limit           = 1.5f,
  44    k_look_speed            = 2.0f,
  45    k_walk_accel            = 150.0f,
  46    k_walk_friction         = 8.0f;
  47
  48 VG_STATIC int freecam = 0;
  49 VG_STATIC int walk_grid_iterations = 1;
  50 VG_STATIC float fc_speed = 10.0f;
  51
  52 /*
  53  * -----------------------------------------------------------------------------
  54  *                                  Memory
  55  * -----------------------------------------------------------------------------
  56  */
  57
  58 VG_STATIC struct gplayer
  59 {
  60    /* Physics */
  61    rigidbody collide_front, collide_back;
  62
  63    struct player_phys
  64    {
  65       rigidbody rb, rb_gate_frame;
  66       float iY, siY;   /* Yaw inertia */
  67
  68       v3f a, v_last, m, bob, vl;
  69
  70       /* Utility */
  71       float vswitch, slip, slip_last, reverse;
  72
  73       float grab, jump, pushing, push_time;
  74       v2f grab_mouse_delta;
  75
  76       int lift_frames;
  77
  78       double start_push;
  79       int in_air, on_board, jump_charge, jump_dir, grind;
  80
  81       m3x3f vr,vr_pstep;
  82    }
  83    phys,
  84    phys_gate_frame;
  85
  86    m4x3f visual_transform,
  87          inv_visual_transform;
  88
  89    int is_dead, death_tick_allowance, rewinding;
  90    int rewind_sound_wait;
  91
  92    v3f land_target;
  93
  94    struct land_log
  95    {
  96       v3f positions[50];
  97       u32 colour;
  98       int count;
  99    }
 100    land_log[22];
 101    int land_log_count;
 102
 103    v3f handl_target, handr_target,
 104        handl, handr;
 105
 106    /* Input */
 107    struct input_binding *input_js1h,
 108                         *input_js1v,
 109                         *input_js2h,
 110                         *input_js2v,
 111                         *input_jump,
 112                         *input_push,
 113                         *input_walk,
 114                         *input_walkh,
 115                         *input_walkv,
 116                         *input_switch_mode,
 117                         *input_reset,
 118                         *input_grab;
 119
 120    /* Camera */
 121    float air_blend;
 122    float air_time;
 123
 124    v3f camera_pos, smooth_localcam;
 125    v2f angles;
 126
 127    struct rewind_frame
 128    {
 129       v3f pos;
 130       v2f ang;
 131    }
 132    *rewind_buffer;
 133    u32 rewind_incrementer,
 134        rewind_length;
 135
 136    float rewind_time, rewind_total_length, rewind_predicted_time;
 137    double diag_rewind_start, diag_rewind_time;
 138    float dist_accum;
 139
 140    /* animation */
 141    double jump_time;
 142    float fslide,
 143          fdirz, fdirx,
 144          fstand,
 145          ffly,
 146          fpush,
 147          fairdir,
 148          fsetup,
 149          walk_timer,
 150          fjump,
 151          fonboard,
 152          frun,
 153          fgrind;
 154
 155    float walk;
 156    int step_phase;
 157    enum mdl_surface_prop surface_prop;
 158
 159    /* player model */
 160    struct player_model
 161    {
 162       glmesh player_meshes[3];
 163
 164       mdl_context meta;
 165       struct skeleton sk;
 166       struct skeleton_anim *anim_stand,
 167                            *anim_highg,
 168                            *anim_slide,
 169                            *anim_air,
 170                            *anim_push, *anim_push_reverse,
 171                            *anim_ollie, *anim_ollie_reverse,
 172                            *anim_grabs, *anim_stop,
 173                            *anim_walk, *anim_run, *anim_idle,
 174                            *anim_jump;
 175
 176       u32 id_hip,
 177           id_ik_hand_l,
 178           id_ik_hand_r,
 179           id_ik_elbow_l,
 180           id_ik_elbow_r,
 181           id_head;
 182
 183       v3f cam_pos;
 184
 185       struct ragdoll_part
 186       {
 187          u32 bone_id;
 188          v3f offset;
 189
 190          u32 use_limits;
 191          v3f limits[2];
 192
 193          rigidbody  rb;
 194          u32 parent;
 195       }
 196       ragdoll[32];
 197       u32 ragdoll_count;
 198
 199       int shoes[2];
 200    }
 201    mdl;
 202 }
 203 player =
 204 {
 205    .collide_front = { .type = k_rb_shape_sphere, .inf.sphere.radius = 0.3f },
 206    .collide_back  = { .type = k_rb_shape_sphere, .inf.sphere.radius = 0.3f }
 207 };
 208
 209 /*
 210  * API
 211  */
 212 VG_STATIC float *player_get_pos(void);
 213 VG_STATIC void player_kill(void);
 214 VG_STATIC float *player_cam_pos(void);
 215 VG_STATIC void player_save_frame(void);
 216 VG_STATIC void player_restore_frame(void);
 217 VG_STATIC void player_save_rewind_frame(void);
 218
 219 /*
 220  * Submodules
 221  */
 222 VG_STATIC void player_mouseview(void);
 223
 224 #include "player_physics.h"
 225 #include "player_ragdoll.h"
 226 #include "player_model.h"
 227 #include "player_animation.h"
 228 #include "player_audio.h"
 229
 230 /*
 231  * -----------------------------------------------------------------------------
 232  *                                    Events
 233  * -----------------------------------------------------------------------------
 234  */
 235
 236 VG_STATIC void player_init(void)                                            /* 1 */
 237 {
 238    player.input_js1h = vg_create_named_input( "steer-h", k_input_type_axis );
 239    player.input_js1v = vg_create_named_input( "steer-v", k_input_type_axis );
 240    player.input_grab = vg_create_named_input( "grab", k_input_type_axis_norm );
 241    player.input_js2h = vg_create_named_input( "grab-h", k_input_type_axis );
 242    player.input_js2v = vg_create_named_input( "grab-v", k_input_type_axis );
 243    player.input_jump = vg_create_named_input( "jump", k_input_type_button );
 244    player.input_push = vg_create_named_input( "push", k_input_type_button );
 245    player.input_walk = vg_create_named_input( "walk", k_input_type_button );
 246
 247    player.input_walkh = vg_create_named_input( "walk-h",
 248                                                k_input_type_axis );
 249    player.input_walkv = vg_create_named_input( "walk-v",
 250                                                k_input_type_axis );
 251
 252
 253    player.input_switch_mode = vg_create_named_input( "switch-mode",
 254                                                      k_input_type_button );
 255    player.input_reset = vg_create_named_input( "reset", k_input_type_button );
 256
 257    const char *default_cfg[] =
 258    {
 259       "bind  steer-h gp-ls-h",
 260       "bind -steer-h a",
 261       "bind +steer-h d",
 262
 263       "bind  steer-v gp-ls-v",
 264       "bind -steer-v w",
 265       "bind +steer-v s",
 266
 267       "bind  grab gp-rt",
 268       "bind +grab shift",
 269       "bind  grab-h gp-rs-h",
 270       "bind  grab-v gp-rs-v",
 271
 272       "bind jump space",
 273       "bind jump gp-a",
 274
 275       "bind push gp-b",
 276       "bind push w",
 277
 278       "bind walk shift",
 279       "bind walk gp-ls",
 280
 281       "bind  walk-h  gp-ls-h",
 282       "bind  walk-v -gp-ls-v",
 283       "bind +walk-h d",
 284       "bind -walk-h a",
 285       "bind +walk-v w",
 286       "bind -walk-v s",
 287
 288       "bind reset gp-lb",
 289       "bind reset r",
 290
 291       "bind switch-mode gp-y",
 292       "bind switch-mode e",
 293    };
 294
 295    for( int i=0; i<vg_list_size(default_cfg); i++ )
 296       vg_execute_console_input(default_cfg[i]);
 297
 298    rb_init( &player.phys.rb );
 299    rb_init( &player.collide_front );
 300    rb_init( &player.collide_back  );
 301
 302    vg_convar_push( (struct vg_convar){
 303       .name = "gwalk_speed",
 304       .data = &k_walkspeed,
 305       .data_type = k_convar_dtype_f32,
 306       .opt_f32 = { .clamp = 0 },
 307       .persistent = 0
 308    });
 309
 310    vg_convar_push( (struct vg_convar){
 311       .name = "air_accelerate",
 312       .data = &k_air_accelerate,
 313       .data_type = k_convar_dtype_f32,
 314       .opt_f32 = { .clamp = 0 },
 315       .persistent = 0
 316    });
 317
 318    vg_convar_push( (struct vg_convar){
 319       .name = "run_speed",
 320       .data = &k_runspeed,
 321       .data_type = k_convar_dtype_f32,
 322       .opt_f32 = { .clamp = 0 },
 323       .persistent = 1
 324    });
 325
 326    vg_convar_push( (struct vg_convar){
 327       .name = "walk_accel",
 328       .data = &k_walk_accel,
 329       .data_type = k_convar_dtype_f32,
 330       .opt_f32 = { .clamp = 0 },
 331       .persistent = 1
 332    });
 333
 334    vg_convar_push( (struct vg_convar){
 335       .name = "fc",
 336       .data = &freecam,
 337       .data_type = k_convar_dtype_i32,
 338       .opt_i32 = { .min=0, .max=1, .clamp=1 },
 339       .persistent = 1
 340    });
 341
 342    vg_convar_push( (struct vg_convar){
 343       .name = "fcs",
 344       .data = &fc_speed,
 345       .data_type = k_convar_dtype_f32,
 346       .opt_f32 = { .clamp = 0 },
 347       .persistent = 1
 348    });
 349
 350         vg_function_push( (struct vg_cmd){
 351                 .name = "reset",
 352                 .function = reset_player
 353         });
 354
 355    player.rewind_length = 0;
 356    player.rewind_buffer =
 357       vg_linear_alloc( vg_mem.rtmemory,
 358                        sizeof(struct rewind_frame) * PLAYER_REWIND_FRAMES );
 359
 360    player_model_init();
 361
 362    /* controls */
 363
 364 }
 365
 366 VG_STATIC void player_save_rewind_frame(void)
 367 {
 368    if( player.rewind_length < PLAYER_REWIND_FRAMES )
 369    {
 370       struct rewind_frame *fr =
 371          &player.rewind_buffer[ player.rewind_length ++ ];
 372
 373       v2_copy( player.angles, fr->ang );
 374       v3_copy( player.camera_pos, fr->pos );
 375
 376       player.rewind_incrementer = 0;
 377
 378       if( player.rewind_length > 1 )
 379       {
 380          player.rewind_total_length +=
 381             v3_dist( player.rewind_buffer[player.rewind_length-1].pos,
 382                      player.rewind_buffer[player.rewind_length-2].pos );
 383       }
 384    }
 385 }
 386
 387
 388 /* disaster */
 389 VG_STATIC int         menu_enabled(void);
 390 #include "menu.h"
 391
 392 /*
 393  * Free camera movement
 394  */
 395 VG_STATIC void player_mouseview(void)
 396 {
 397    if( menu_enabled() )
 398       return;
 399
 400    v2_muladds( player.angles, vg.mouse_delta, 0.0025f, player.angles );
 401
 402    if( vg_input.controller_should_use_trackpad_look )
 403    {
 404       static v2f last_input;
 405       static v2f vel;
 406       static v2f vel_smooth;
 407
 408       v2f input = { player.input_js2h->axis.value,
 409                     player.input_js2v->axis.value };
 410
 411       if( (v2_length2(last_input) > 0.001f) && (v2_length2(input) > 0.001f) )
 412       {
 413          v2_sub( input, last_input, vel );
 414          v2_muls( vel, 1.0f/vg.time_delta, vel );
 415       }
 416       else
 417       {
 418          v2_zero( vel );
 419       }
 420
 421       v2_lerp( vel_smooth, vel, vg.time_delta*8.0f, vel_smooth );
 422
 423       v2_muladds( player.angles, vel_smooth, vg.time_delta, player.angles );
 424       v2_copy( input, last_input );
 425    }
 426    else
 427    {
 428       player.angles[0] += player.input_js2h->axis.value * vg.time_delta * 4.0f;
 429       player.angles[1] += player.input_js2v->axis.value * vg.time_delta * 4.0f;
 430    }
 431
 432    player.angles[1] = vg_clampf( player.angles[1], -VG_PIf*0.5f, VG_PIf*0.5f );
 433 }
 434
 435 /* Deal with input etc */
 436 VG_STATIC void player_update_pre(void)
 437 {
 438    struct player_phys *phys = &player.phys;
 439
 440    if( player.rewinding )
 441    {
 442       return;
 443    }
 444
 445    if( vg_input_button_down( player.input_reset ) && !menu_enabled() )
 446    {
 447       if( player.is_dead )
 448       {
 449          reset_player( 0, NULL );
 450          audio_lock();
 451          audio_play_oneshot( &audio_ui[0], 1.0f );
 452          audio_unlock();
 453       }
 454       else
 455       {
 456          double delta = world.time - world.last_use;
 457
 458          if( (delta <= RESET_MAX_TIME) && (world.last_use != 0.0) )
 459          {
 460             player.rewinding = 1;
 461             player.rewind_sound_wait = 1;
 462             player.rewind_time = (float)player.rewind_length - 0.0001f;
 463             player_save_rewind_frame();
 464             audio_lock();
 465             audio_play_oneshot( &audio_rewind[0], 1.0f );
 466             audio_unlock();
 467
 468             /* based on analytical testing. DONT CHANGE!
 469              *
 470              *    time taken: y = (x^(4/5)) * 74.5
 471              *    inverse   : x = (2/149)^(4/5) * y^(4/5)
 472              */
 473
 474             float constant = powf( 2.0f/149.0f, 4.0f/5.0f ),
 475                   curve    = powf( player.rewind_total_length, 4.0f/5.0f );
 476
 477             player.rewind_predicted_time = constant * curve;
 478             player.diag_rewind_start = vg.time;
 479             player.diag_rewind_time  = player.rewind_time;
 480
 481             player.is_dead = 0;
 482             player.death_tick_allowance = 30;
 483             player_restore_frame();
 484
 485             if( !phys->on_board )
 486             {
 487                player.angles[0] = atan2f( -phys->rb.forward[2],
 488                                           -phys->rb.forward[0] );
 489             }
 490
 491             player.mdl.shoes[0] = 1;
 492             player.mdl.shoes[1] = 1;
 493
 494             world_routes_notify_reset();
 495
 496             /* apply 1 frame of movement */
 497             player_do_motion();
 498          }
 499          else
 500          {
 501             /* cant do that */
 502             audio_lock();
 503             audio_play_oneshot( &audio_rewind[4], 1.0f );
 504             audio_unlock();
 505          }
 506       }
 507    }
 508
 509    if( vg_input_button_down( player.input_switch_mode ) && !menu_enabled() )
 510    {
 511       phys->on_board ^= 0x1;
 512
 513       audio_lock();
 514       if( phys->on_board )
 515       {
 516          v3_muladds( phys->rb.v, phys->rb.forward, 0.2f, phys->rb.v );
 517          audio_play_oneshot( &audio_lands[6], 1.0f );
 518       }
 519       else
 520       {
 521          audio_play_oneshot( &audio_lands[5], 1.0f );
 522       }
 523
 524       audio_unlock();
 525    }
 526
 527    if( !phys->on_board )
 528       player_mouseview();
 529 }
 530
 531 VG_STATIC void player_update_fixed(void)                                 /* 2 */
 532 {
 533    if( player.rewinding )
 534       return;
 535
 536    if( player.death_tick_allowance )
 537       player.death_tick_allowance --;
 538
 539    struct player_phys *phys = &player.phys;
 540
 541    if( player.is_dead )
 542    {
 543       player_ragdoll_iter();
 544    }
 545    else
 546    {
 547       player.rewind_incrementer ++;
 548
 549       if( player.rewind_incrementer > (u32)(0.25/VG_TIMESTEP_FIXED) )
 550       {
 551          player_save_rewind_frame();
 552       }
 553
 554       player_do_motion();
 555    }
 556 }
 557
 558 VG_STATIC void player_update_post(void)
 559 {
 560    for( int i=0; i<player.land_log_count; i++ )
 561    {
 562       struct land_log *log = &player.land_log[i];
 563
 564       for( int j=0; j<log->count - 1; j ++ )
 565          vg_line( log->positions[j], log->positions[j+1], log->colour );
 566
 567       vg_line_cross( log->positions[log->count-1], log->colour, 0.25f );
 568    }
 569
 570    if( player.is_dead )
 571    {
 572       player_debug_ragdoll();
 573
 574       if( !freecam )
 575          player_animate_death_cam();
 576    }
 577    else
 578    {
 579       player_animate();
 580
 581       if( !freecam )
 582          player_animate_camera();
 583    }
 584
 585    if( freecam )
 586       player_freecam();
 587
 588
 589    /* CAMERA POSITIONING: LAYER 0 */
 590    v2_copy( player.angles, main_camera.angles );
 591    v3_copy( player.camera_pos, main_camera.pos );
 592
 593    if( player.rewinding )
 594    {
 595       if( player.rewind_time <= 0.0f )
 596       {
 597          double taken = vg.time - player.diag_rewind_start;
 598          vg_success( "Rewind took (rt, pl, tl): %f, %f, %f\n",
 599                            taken, player.diag_rewind_time,
 600                            player.rewind_total_length );
 601
 602          player.rewinding = 0;
 603          player.rewind_length = 1;
 604          player.rewind_total_length = 0.0f;
 605          player.rewind_incrementer = 0;
 606          world.sky_target_rate = 1.0;
 607       }
 608       else
 609       {
 610          world.sky_target_rate = -100.0;
 611          assert( player.rewind_length > 0 );
 612
 613          v2f override_angles;
 614          v3f override_pos;
 615
 616          float budget         = vg.time_delta,
 617                overall_length = player.rewind_length;
 618
 619          world_routes_rollback_time( player.rewind_time / overall_length );
 620
 621          for( int i=0; (i<10)&&(player.rewind_time>0.0f)&&(budget>0.0f); i ++ )
 622          {
 623             /* Interpolate frames */
 624             int i0 = floorf( player.rewind_time ),
 625                 i1 = VG_MIN( i0+1, player.rewind_length-1 );
 626
 627             struct rewind_frame *fr =  &player.rewind_buffer[i0],
 628                                 *fr1 = &player.rewind_buffer[i1];
 629
 630             float dist = vg_maxf( v3_dist( fr->pos, fr1->pos ), 0.001f ),
 631                   subl = vg_fractf( player.rewind_time ) + 0.001f,
 632
 633                   sramp= 3.0f-(1.0f/(0.4f+0.4f*player.rewind_time)),
 634                   speed = sramp*28.0f + 0.5f*player.rewind_time,
 635                   mod  = speed * (budget / dist),
 636
 637                   advl = vg_minf( mod, subl ),
 638                   advt = (advl / mod) * budget;
 639
 640             player.dist_accum += speed * advt;
 641             player.rewind_time -= advl;
 642             budget -= advt;
 643          }
 644
 645          player.rewind_time = vg_maxf( 0.0f, player.rewind_time );
 646
 647          float current_time = vg.time - player.diag_rewind_start,
 648                remaining    = player.rewind_predicted_time - current_time;
 649
 650          if( player.rewind_sound_wait )
 651          {
 652             if( player.rewind_predicted_time >= 6.5f )
 653             {
 654                if( remaining <= 6.5f )
 655                {
 656                   audio_lock();
 657                   audio_play_oneshot( &audio_rewind[3], 1.0f );
 658                   audio_unlock();
 659                   player.rewind_sound_wait = 0;
 660                }
 661             }
 662             else if( player.rewind_predicted_time >= 2.5f )
 663             {
 664                if( remaining <= 2.5f )
 665                {
 666                   audio_lock();
 667                   audio_play_oneshot( &audio_rewind[2], 1.0f );
 668                   audio_unlock();
 669                   player.rewind_sound_wait = 0;
 670                }
 671             }
 672             else if( player.rewind_predicted_time >= 1.5f )
 673             {
 674                if( remaining <= 1.5f )
 675                {
 676                   audio_lock();
 677                   audio_play_oneshot( &audio_rewind[1], 1.0f );
 678                   audio_unlock();
 679                   player.rewind_sound_wait = 0;
 680                }
 681             }
 682          }
 683
 684          int i0 = floorf( player.rewind_time ),
 685              i1 = VG_MIN( i0+1, player.rewind_length-1 );
 686
 687          struct rewind_frame *fr =  &player.rewind_buffer[i0],
 688                              *fr1 = &player.rewind_buffer[i1];
 689
 690          float sub = vg_fractf(player.rewind_time);
 691
 692          v3_lerp( fr->pos, fr1->pos, sub, override_pos );
 693          override_angles[0] = vg_alerpf( fr->ang[0], fr1->ang[0], sub );
 694          override_angles[1] = vg_lerpf ( fr->ang[1], fr1->ang[1], sub );
 695
 696          /* CAMERA POSITIONING: LAYER 1 */
 697          float blend = (4.0f-player.rewind_time) * 0.25f,
 698                c     = vg_clampf( blend, 0.0f, 1.0f );
 699
 700          main_camera.angles[0] =
 701             vg_alerpf(override_angles[0], player.angles[0], c);
 702          main_camera.angles[1] =
 703             vg_lerpf (override_angles[1], player.angles[1], c);
 704          v3_lerp( override_pos, player.camera_pos, c, main_camera.pos );
 705       }
 706    }
 707
 708    camera_update_transform( &main_camera );
 709    player_audio();
 710 }
 711
 712 VG_STATIC void draw_player( camera *cam )
 713 {
 714    if( player.is_dead )
 715       player_model_copy_ragdoll();
 716
 717    shader_viewchar_use();
 718    vg_tex2d_bind( &tex_characters, 0 );
 719    shader_viewchar_uTexMain( 0 );
 720    shader_viewchar_uCamera( cam->transform[3] );
 721    shader_viewchar_uPv( cam->mtx.pv );
 722    shader_link_standard_ub( _shader_viewchar.id, 2 );
 723    glUniformMatrix4x3fv( _uniform_viewchar_uTransforms,
 724                          player.mdl.sk.bone_count,
 725                          0,
 726                          (float *)player.mdl.sk.final_mtx );
 727
 728    mesh_bind( &player.mdl.player_meshes[cl_playermdl_id] );
 729    mesh_draw( &player.mdl.player_meshes[cl_playermdl_id] );
 730 }
 731
 732 /*
 733  * -----------------------------------------------------------------------------
 734  *                              API implementation
 735  * -----------------------------------------------------------------------------
 736  */
 737
 738 VG_STATIC float *player_get_pos(void)
 739 {
 740    return player.phys.rb.co;
 741 }
 742
 743 VG_STATIC void player_kill(void)
 744 {
 745    if( player.death_tick_allowance == 0 )
 746    {
 747       player.is_dead = 1;
 748       player_ragdoll_copy_model( player.phys.rb.v );
 749       world_routes_clear();
 750    }
 751 }
 752
 753 VG_STATIC float *player_cam_pos(void)
 754 {
 755    return player.camera_pos;
 756 }
 757
 758
 759 #endif /* PLAYER_H */