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