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       double start_push;
  70       int in_air, on_board, jump_charge, jump_dir;
  71
  72       m3x3f vr,vr_pstep;
  73    }
  74    phys,
  75    phys_gate_frame;
  76
  77    m4x3f visual_transform,
  78          inv_visual_transform;
  79
  80    int is_dead, death_tick_allowance, rewinding;
  81    int rewind_sound_wait;
  82
  83    v3f land_target;
  84    v3f land_target_log[22];
  85    u32 land_target_colours[22];
  86    int land_log_count;
  87
  88    v3f handl_target, handr_target,
  89        handl, handr;
  90
  91    /* Input */
  92    struct input_binding *input_js1h,
  93                         *input_js1v,
  94                         *input_js2h,
  95                         *input_js2v,
  96                         *input_emjs2h,
  97                         *input_emjs2v,
  98                         *input_jump,
  99                         *input_push,
 100                         *input_walkh,
 101                         *input_walkv,
 102                         *input_switch_mode,
 103                         *input_reset,
 104                         *input_grab;
 105
 106    /* Camera */
 107    float air_blend;
 108    float air_time;
 109
 110    v3f camera_pos, smooth_localcam;
 111    v2f angles;
 112
 113    struct rewind_frame
 114    {
 115       v3f pos;
 116       v2f ang;
 117    }
 118    *rewind_buffer;
 119    u32 rewind_incrementer,
 120        rewind_length;
 121
 122    float rewind_time, rewind_total_length, rewind_predicted_time;
 123    double diag_rewind_start, diag_rewind_time;
 124    float dist_accum;
 125
 126    /* animation */
 127    double jump_time;
 128    float fslide,
 129          fdirz, fdirx,
 130          fstand,
 131          ffly,
 132          fpush,
 133          fairdir,
 134          fsetup,
 135          walk_timer,
 136          fjump,
 137          fonboard,
 138          frun;
 139
 140    float walk;
 141    int step_phase;
 142    enum mdl_surface_prop surface_prop;
 143
 144    /* player model */
 145    struct player_model
 146    {
 147       glmesh player_meshes[3];
 148
 149       mdl_context meta;
 150       struct skeleton sk;
 151       struct skeleton_anim *anim_stand,
 152                            *anim_highg,
 153                            *anim_slide,
 154                            *anim_air,
 155                            *anim_push, *anim_push_reverse,
 156                            *anim_ollie, *anim_ollie_reverse,
 157                            *anim_grabs, *anim_stop,
 158                            *anim_walk, *anim_run, *anim_idle,
 159                            *anim_jump;
 160
 161       u32 id_hip,
 162           id_ik_hand_l,
 163           id_ik_hand_r,
 164           id_ik_elbow_l,
 165           id_ik_elbow_r,
 166           id_head;
 167
 168       v3f cam_pos;
 169
 170       struct ragdoll_part
 171       {
 172          u32 bone_id;
 173          v3f offset;
 174
 175          u32 use_limits;
 176          v3f limits[2];
 177
 178          rigidbody  rb;
 179          u32 parent;
 180       }
 181       ragdoll[32];
 182       u32 ragdoll_count;
 183
 184       int shoes[2];
 185    }
 186    mdl;
 187 }
 188 player =
 189 {
 190    .collide_front = { .type = k_rb_shape_sphere, .inf.sphere.radius = 0.3f },
 191    .collide_back  = { .type = k_rb_shape_sphere, .inf.sphere.radius = 0.3f }
 192 };
 193
 194 /*
 195  * API
 196  */
 197 VG_STATIC float *player_get_pos(void);
 198 VG_STATIC void player_kill(void);
 199 VG_STATIC float *player_cam_pos(void);
 200 VG_STATIC void player_save_frame(void);
 201 VG_STATIC void player_restore_frame(void);
 202 VG_STATIC void player_save_rewind_frame(void);
 203
 204 /*
 205  * Submodules
 206  */
 207 VG_STATIC void player_mouseview(void);
 208
 209 #include "player_physics.h"
 210 #include "player_ragdoll.h"
 211 #include "player_model.h"
 212 #include "player_animation.h"
 213 #include "player_audio.h"
 214
 215 /*
 216  * -----------------------------------------------------------------------------
 217  *                                    Events
 218  * -----------------------------------------------------------------------------
 219  */
 220
 221 VG_STATIC void player_init(void)                                            /* 1 */
 222 {
 223    player.input_js1h = vg_create_named_input( "steer-h", k_input_type_axis );
 224    player.input_js1v = vg_create_named_input( "steer-v", k_input_type_axis );
 225    player.input_grab = vg_create_named_input( "grab", k_input_type_axis_norm );
 226    player.input_js2h = vg_create_named_input( "grab-h", k_input_type_axis );
 227    player.input_js2v = vg_create_named_input( "grab-v", k_input_type_axis );
 228    player.input_emjs2h = vg_create_named_input( "kbgrab-h", k_input_type_axis );
 229    player.input_emjs2v = vg_create_named_input( "kbgrab-v", k_input_type_axis );
 230    player.input_jump = vg_create_named_input( "jump", k_input_type_button );
 231    player.input_push = vg_create_named_input( "push", k_input_type_axis_norm );
 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-h gp-rs-h",
 255       "bind grab-v gp-rs-v",
 256
 257       "bind -kbgrab-h left",
 258       "bind +kbgrab-h right",
 259       "bind -kbgrab-v down",
 260       "bind +kbgrab-v up",
 261
 262       "bind jump space",
 263       "bind jump gp-a",
 264
 265       "bind  push gp-lt",
 266       "bind +push shift",
 267
 268       "bind  walk-h gp-ls-h",
 269       "bind  walk-v gp-ls-v",
 270       "bind +walk-h d",
 271       "bind -walk-h a",
 272       "bind +walk-v w",
 273       "bind -walk-v s",
 274
 275       "bind reset gp-lb",
 276       "bind reset r",
 277
 278       "bind switch-mode gp-y",
 279       "bind switch-mode e",
 280    };
 281
 282    for( int i=0; i<vg_list_size(default_cfg); i++ )
 283       execute_console_input(default_cfg[i]);
 284
 285    rb_init( &player.phys.rb );
 286    rb_init( &player.collide_front );
 287    rb_init( &player.collide_back  );
 288
 289    vg_convar_push( (struct vg_convar){
 290       .name = "cl_playermdl_id",
 291       .data = &cl_playermdl_id,
 292       .data_type = k_convar_dtype_i32,
 293       .opt_i32 = { .min=0, .max=2, .clamp=1 },
 294       .persistent = 1
 295    });
 296
 297    vg_convar_push( (struct vg_convar){
 298       .name = "walk_speed",
 299       .data = &k_walkspeed,
 300       .data_type = k_convar_dtype_f32,
 301       .opt_f32 = { .clamp = 0 },
 302       .persistent = 0
 303    });
 304
 305    vg_convar_push( (struct vg_convar){
 306       .name = "run_speed",
 307       .data = &k_runspeed,
 308       .data_type = k_convar_dtype_f32,
 309       .opt_f32 = { .clamp = 0 },
 310       .persistent = 1
 311    });
 312
 313    vg_convar_push( (struct vg_convar){
 314       .name = "walk_accel",
 315       .data = &k_walk_accel,
 316       .data_type = k_convar_dtype_f32,
 317       .opt_f32 = { .clamp = 0 },
 318       .persistent = 1
 319    });
 320
 321    vg_convar_push( (struct vg_convar){
 322       .name = "fc",
 323       .data = &freecam,
 324       .data_type = k_convar_dtype_i32,
 325       .opt_i32 = { .min=0, .max=1, .clamp=1 },
 326       .persistent = 1
 327    });
 328
 329    vg_convar_push( (struct vg_convar){
 330       .name = "fcs",
 331       .data = &fc_speed,
 332       .data_type = k_convar_dtype_f32,
 333       .opt_f32 = { .clamp = 0 },
 334       .persistent = 1
 335    });
 336
 337         vg_function_push( (struct vg_cmd){
 338                 .name = "reset",
 339                 .function = reset_player
 340         });
 341
 342    player.rewind_length = 0;
 343    player.rewind_buffer =
 344       vg_linear_alloc( vg_mem.rtmemory,
 345                        sizeof(struct rewind_frame) * PLAYER_REWIND_FRAMES );
 346
 347    player_model_init();
 348
 349    /* controls */
 350
 351 }
 352
 353 VG_STATIC void player_save_rewind_frame(void)
 354 {
 355    if( player.rewind_length < PLAYER_REWIND_FRAMES )
 356    {
 357       struct rewind_frame *fr =
 358          &player.rewind_buffer[ player.rewind_length ++ ];
 359
 360       v2_copy( player.angles, fr->ang );
 361       v3_copy( player.camera_pos, fr->pos );
 362
 363       player.rewind_incrementer = 0;
 364
 365       if( player.rewind_length > 1 )
 366       {
 367          player.rewind_total_length +=
 368             v3_dist( player.rewind_buffer[player.rewind_length-1].pos,
 369                      player.rewind_buffer[player.rewind_length-2].pos );
 370       }
 371    }
 372 }
 373
 374 /*
 375  * Free camera movement
 376  */
 377 VG_STATIC void player_mouseview(void)
 378 {
 379    if( ui_want_mouse() )
 380       return;
 381
 382    v2_muladds( player.angles, vg.mouse_delta, 0.0025f, player.angles );
 383    player.angles[1] = vg_clampf( player.angles[1], -VG_PIf*0.5f, VG_PIf*0.5f );
 384 }
 385
 386 /* Deal with input etc */
 387 VG_STATIC void player_update_pre(void)
 388 {
 389    struct player_phys *phys = &player.phys;
 390
 391    if( player.rewinding )
 392    {
 393       return;
 394    }
 395
 396    if( vg_input_button_down( player.input_reset ) )
 397    {
 398       if( player.is_dead )
 399       {
 400          reset_player( 0, NULL );
 401          audio_lock();
 402          audio_play_oneshot( &audio_ui[0], 1.0f );
 403          audio_unlock();
 404       }
 405       else
 406       {
 407          double delta = world.time - world.last_use;
 408
 409          if( (delta <= RESET_MAX_TIME) && (world.last_use != 0.0) )
 410          {
 411             player.rewinding = 1;
 412             player.rewind_sound_wait = 1;
 413             player.rewind_time = (float)player.rewind_length - 0.0001f;
 414             player_save_rewind_frame();
 415             audio_lock();
 416             audio_play_oneshot( &audio_rewind[0], 1.0f );
 417             audio_unlock();
 418
 419             /* based on analytical testing. DONT CHANGE!
 420              *
 421              *    time taken: y = (x^(4/5)) * 74.5
 422              *    inverse   : x = (2/149)^(4/5) * y^(4/5)
 423              */
 424
 425             float constant = powf( 2.0f/149.0f, 4.0f/5.0f ),
 426                   curve    = powf( player.rewind_total_length, 4.0f/5.0f );
 427
 428             player.rewind_predicted_time = constant * curve;
 429             player.diag_rewind_start = vg.time;
 430             player.diag_rewind_time  = player.rewind_time;
 431
 432             player.is_dead = 0;
 433             player.death_tick_allowance = 30;
 434             player_restore_frame();
 435
 436             if( !phys->on_board )
 437             {
 438                player.angles[0] = atan2f( -phys->rb.forward[2],
 439                                           -phys->rb.forward[0] );
 440             }
 441
 442             player.mdl.shoes[0] = 1;
 443             player.mdl.shoes[1] = 1;
 444
 445             world_routes_notify_reset();
 446
 447             /* apply 1 frame of movement */
 448             player_do_motion();
 449          }
 450          else
 451          {
 452             /* cant do that */
 453             audio_lock();
 454             audio_play_oneshot( &audio_rewind[4], 1.0f );
 455             audio_unlock();
 456          }
 457       }
 458    }
 459
 460    if( vg_input_button_down( player.input_switch_mode ) )
 461    {
 462       phys->on_board ^= 0x1;
 463
 464       audio_lock();
 465       if( phys->on_board )
 466       {
 467          v3_muladds( phys->rb.v, phys->rb.forward, 0.2f, phys->rb.v );
 468          audio_play_oneshot( &audio_lands[6], 1.0f );
 469       }
 470       else
 471       {
 472          audio_play_oneshot( &audio_lands[5], 1.0f );
 473       }
 474
 475       audio_unlock();
 476    }
 477
 478    if( !phys->on_board )
 479       player_mouseview();
 480 }
 481
 482 VG_STATIC void player_update_fixed(void)                                    /* 2 */
 483 {
 484    if( player.rewinding )
 485       return;
 486
 487    if( player.death_tick_allowance )
 488       player.death_tick_allowance --;
 489
 490    struct player_phys *phys = &player.phys;
 491
 492    if( player.is_dead )
 493    {
 494       player_ragdoll_iter();
 495    }
 496    else
 497    {
 498       player.rewind_incrementer ++;
 499
 500       if( player.rewind_incrementer > (u32)(0.25/VG_TIMESTEP_FIXED) )
 501       {
 502          player_save_rewind_frame();
 503       }
 504
 505       player_do_motion();
 506    }
 507 }
 508
 509 VG_STATIC void player_update_post(void)
 510 {
 511    for( int i=0; i<player.land_log_count; i++ )
 512       vg_line_cross( player.land_target_log[i],
 513             player.land_target_colours[i], 0.25f);
 514
 515    if( player.is_dead )
 516    {
 517       player_debug_ragdoll();
 518
 519       if( !freecam )
 520          player_animate_death_cam();
 521    }
 522    else
 523    {
 524       player_animate();
 525
 526       if( !freecam )
 527          player_animate_camera();
 528    }
 529
 530    if( freecam )
 531       player_freecam();
 532
 533
 534    /* CAMERA POSITIONING: LAYER 0 */
 535    v2_copy( player.angles, camera_angles );
 536    v3_copy( player.camera_pos, camera_pos );
 537
 538    if( player.rewinding )
 539    {
 540       if( player.rewind_time <= 0.0f )
 541       {
 542          double taken = vg.time - player.diag_rewind_start;
 543          vg_success( "Rewind took (rt, pl, tl): %f, %f, %f\n",
 544                            taken, player.diag_rewind_time,
 545                            player.rewind_total_length );
 546
 547          player.rewinding = 0;
 548          player.rewind_length = 1;
 549          player.rewind_total_length = 0.0f;
 550          player.rewind_incrementer = 0;
 551          world.sky_target_rate = 1.0;
 552       }
 553       else
 554       {
 555          world.sky_target_rate = -100.0;
 556          assert( player.rewind_length > 0 );
 557
 558          v2f override_angles;
 559          v3f override_pos;
 560
 561          float budget         = vg.time_delta,
 562                overall_length = player.rewind_length;
 563
 564          world_routes_rollback_time( player.rewind_time / overall_length );
 565
 566          for( int i=0; (i<10)&&(player.rewind_time>0.0f)&&(budget>0.0f); i ++ )
 567          {
 568             /* Interpolate frames */
 569             int i0 = floorf( player.rewind_time ),
 570                 i1 = VG_MIN( i0+1, player.rewind_length-1 );
 571
 572             struct rewind_frame *fr =  &player.rewind_buffer[i0],
 573                                 *fr1 = &player.rewind_buffer[i1];
 574
 575             float dist = vg_maxf( v3_dist( fr->pos, fr1->pos ), 0.001f ),
 576                   subl = vg_fractf( player.rewind_time ) + 0.001f,
 577
 578                   sramp= 3.0f-(1.0f/(0.4f+0.4f*player.rewind_time)),
 579                   speed = sramp*28.0f + 0.5f*player.rewind_time,
 580                   mod  = speed * (budget / dist),
 581
 582                   advl = vg_minf( mod, subl ),
 583                   advt = (advl / mod) * budget;
 584
 585             player.dist_accum += speed * advt;
 586             player.rewind_time -= advl;
 587             budget -= advt;
 588          }
 589
 590          player.rewind_time = vg_maxf( 0.0f, player.rewind_time );
 591
 592          float current_time = vg.time - player.diag_rewind_start,
 593                remaining    = player.rewind_predicted_time - current_time;
 594
 595          if( player.rewind_sound_wait )
 596          {
 597             if( player.rewind_predicted_time >= 6.5f )
 598             {
 599                if( remaining <= 6.5f )
 600                {
 601                   audio_lock();
 602                   audio_play_oneshot( &audio_rewind[3], 1.0f );
 603                   audio_unlock();
 604                   player.rewind_sound_wait = 0;
 605                }
 606             }
 607             else if( player.rewind_predicted_time >= 2.5f )
 608             {
 609                if( remaining <= 2.5f )
 610                {
 611                   audio_lock();
 612                   audio_play_oneshot( &audio_rewind[2], 1.0f );
 613                   audio_unlock();
 614                   player.rewind_sound_wait = 0;
 615                }
 616             }
 617             else if( player.rewind_predicted_time >= 1.5f )
 618             {
 619                if( remaining <= 1.5f )
 620                {
 621                   audio_lock();
 622                   audio_play_oneshot( &audio_rewind[1], 1.0f );
 623                   audio_unlock();
 624                   player.rewind_sound_wait = 0;
 625                }
 626             }
 627
 628
 629          }
 630
 631          int i0 = floorf( player.rewind_time ),
 632              i1 = VG_MIN( i0+1, player.rewind_length-1 );
 633
 634          struct rewind_frame *fr =  &player.rewind_buffer[i0],
 635                              *fr1 = &player.rewind_buffer[i1];
 636
 637          float sub = vg_fractf(player.rewind_time);
 638
 639          v3_lerp( fr->pos, fr1->pos, sub, override_pos );
 640          override_angles[0] = vg_alerpf( fr->ang[0], fr1->ang[0], sub );
 641          override_angles[1] = vg_lerpf ( fr->ang[1], fr1->ang[1], sub );
 642
 643          /* CAMERA POSITIONING: LAYER 1 */
 644          float blend = (4.0f-player.rewind_time) * 0.25f,
 645                c     = vg_clampf( blend, 0.0f, 1.0f );
 646
 647          camera_angles[0] = vg_alerpf(override_angles[0], player.angles[0], c);
 648          camera_angles[1] = vg_lerpf (override_angles[1], player.angles[1], c);
 649          v3_lerp( override_pos, player.camera_pos, c, camera_pos );
 650       }
 651    }
 652
 653    camera_update();
 654    player_audio();
 655 }
 656
 657 VG_STATIC void draw_player( m4x3f cam )
 658 {
 659    if( player.is_dead )
 660       player_model_copy_ragdoll();
 661
 662    shader_viewchar_use();
 663    vg_tex2d_bind( &tex_characters, 0 );
 664    shader_viewchar_uTexMain( 0 );
 665    shader_viewchar_uCamera( cam[3] );
 666    shader_viewchar_uPv( vg.pv );
 667    shader_link_standard_ub( _shader_viewchar.id, 2 );
 668    glUniformMatrix4x3fv( _uniform_viewchar_uTransforms,
 669                          player.mdl.sk.bone_count,
 670                          0,
 671                          (float *)player.mdl.sk.final_mtx );
 672
 673    mesh_bind( &player.mdl.player_meshes[cl_playermdl_id] );
 674    mesh_draw( &player.mdl.player_meshes[cl_playermdl_id] );
 675 }
 676
 677 /*
 678  * -----------------------------------------------------------------------------
 679  *                              API implementation
 680  * -----------------------------------------------------------------------------
 681  */
 682
 683 VG_STATIC float *player_get_pos(void)
 684 {
 685    return player.phys.rb.co;
 686 }
 687
 688 VG_STATIC void player_kill(void)
 689 {
 690    if( player.death_tick_allowance == 0 )
 691    {
 692       player.is_dead = 1;
 693       player_ragdoll_copy_model( player.phys.rb.v );
 694       world_routes_clear();
 695    }
 696 }
 697
 698 VG_STATIC float *player_cam_pos(void)
 699 {
 700    return player.camera_pos;
 701 }
 702
 703
 704 #endif /* PLAYER_H */