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