player.h

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