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             = 20.0f,  /* 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_walk,
 101                         *input_switch_mode,
 102                         *input_reset,
 103                         *input_grab;
 104
 105    /* Camera */
 106    float air_blend;
 107    float air_time;
 108
 109    v3f camera_pos, smooth_localcam;
 110    v2f angles;
 111
 112    struct rewind_frame
 113    {
 114       v3f pos;
 115       v2f ang;
 116    }
 117    *rewind_buffer;
 118    u32 rewind_incrementer,
 119        rewind_length;
 120
 121    float rewind_time, rewind_total_length, rewind_predicted_time;
 122    double diag_rewind_start, diag_rewind_time;
 123    float dist_accum;
 124
 125    /* animation */
 126    double jump_time;
 127    float fslide,
 128          fdirz, fdirx,
 129          fstand,
 130          ffly,
 131          fpush,
 132          fairdir,
 133          fsetup,
 134          walk_timer,
 135          fjump,
 136          fonboard,
 137          frun;
 138
 139    float walk;
 140    int step_phase;
 141    enum mdl_surface_prop surface_prop;
 142
 143    /* player model */
 144    struct player_model
 145    {
 146       glmesh player_meshes[3];
 147
 148       mdl_context meta;
 149       struct skeleton sk;
 150       struct skeleton_anim *anim_stand,
 151                            *anim_highg,
 152                            *anim_slide,
 153                            *anim_air,
 154                            *anim_push, *anim_push_reverse,
 155                            *anim_ollie, *anim_ollie_reverse,
 156                            *anim_grabs, *anim_stop,
 157                            *anim_walk, *anim_run, *anim_idle,
 158                            *anim_jump;
 159
 160       u32 id_hip,
 161           id_ik_hand_l,
 162           id_ik_hand_r,
 163           id_ik_elbow_l,
 164           id_ik_elbow_r,
 165           id_head;
 166
 167       v3f cam_pos;
 168
 169       struct ragdoll_part
 170       {
 171          u32 bone_id;
 172          v3f offset;
 173
 174          u32 use_limits;
 175          v3f limits[2];
 176
 177          rigidbody  rb;
 178          u32 parent;
 179       }
 180       ragdoll[32];
 181       u32 ragdoll_count;
 182
 183       int shoes[2];
 184    }
 185    mdl;
 186 }
 187 player =
 188 {
 189    .collide_front = { .type = k_rb_shape_sphere, .inf.sphere.radius = 0.3f },
 190    .collide_back  = { .type = k_rb_shape_sphere, .inf.sphere.radius = 0.3f }
 191 };
 192
 193 /*
 194  * API
 195  */
 196 VG_STATIC float *player_get_pos(void);
 197 VG_STATIC void player_kill(void);
 198 VG_STATIC float *player_cam_pos(void);
 199 VG_STATIC void player_save_frame(void);
 200 VG_STATIC void player_restore_frame(void);
 201 VG_STATIC void player_save_rewind_frame(void);
 202
 203 /*
 204  * Submodules
 205  */
 206 #include "player_physics.h"
 207 #include "player_ragdoll.h"
 208 #include "player_model.h"
 209 #include "player_animation.h"
 210 #include "player_audio.h"
 211
 212 /*
 213  * -----------------------------------------------------------------------------
 214  *                                    Events
 215  * -----------------------------------------------------------------------------
 216  */
 217
 218 VG_STATIC void player_init(void)                                            /* 1 */
 219 {
 220    player.input_js1h = vg_create_named_input( "steer-h", k_input_type_axis );
 221    player.input_js1v = vg_create_named_input( "steer-v", k_input_type_axis );
 222    player.input_grab = vg_create_named_input( "grab", k_input_type_axis_norm );
 223    player.input_js2h = vg_create_named_input( "grab-h", k_input_type_axis );
 224    player.input_js2v = vg_create_named_input( "grab-v", k_input_type_axis );
 225    player.input_emjs2h = vg_create_named_input( "kbgrab-h", k_input_type_axis );
 226    player.input_emjs2v = vg_create_named_input( "kbgrab-v", k_input_type_axis );
 227    player.input_jump = vg_create_named_input( "jump", k_input_type_button );
 228    player.input_push = vg_create_named_input( "push", k_input_type_axis_norm );
 229    player.input_walk = vg_create_named_input( "walk", k_input_type_axis_norm );
 230    player.input_switch_mode = vg_create_named_input( "switch-mode",
 231                                                      k_input_type_button );
 232    player.input_reset = vg_create_named_input( "reset", k_input_type_button );
 233
 234    const char *default_cfg[] =
 235    {
 236       "bind steer-h gp-ls-h",
 237       "bind  steer-h gp-ls-h",
 238       "bind -steer-h a",
 239       "bind +steer-h d",
 240
 241       "bind  steer-v gp-ls-v",
 242       "bind -steer-v s",
 243       "bind +steer-v w",
 244
 245       "bind grab gp-rt",
 246       "bind grab-h gp-rs-h",
 247       "bind grab-v gp-rs-v",
 248
 249       "bind -kbgrab-h left",
 250       "bind +kbgrab-h right",
 251       "bind -kbgrab-v down",
 252       "bind +kbgrab-v up",
 253
 254       "bind jump space",
 255       "bind jump gp-a",
 256
 257       "bind  push gp-lt",
 258       "bind +push shift",
 259
 260       "bind  walk gp-lt",
 261       "bind +walk w",
 262
 263       "bind reset gp-lb",
 264       "bind reset r",
 265
 266       "bind switch-mode gp-y",
 267       "bind switch-mode e",
 268    };
 269
 270    for( int i=0; i<vg_list_size(default_cfg); i++ )
 271       execute_console_input(default_cfg[i]);
 272
 273    rb_init( &player.phys.rb );
 274    rb_init( &player.collide_front );
 275    rb_init( &player.collide_back  );
 276
 277    vg_convar_push( (struct vg_convar){
 278       .name = "cl_playermdl_id",
 279       .data = &cl_playermdl_id,
 280       .data_type = k_convar_dtype_i32,
 281       .opt_i32 = { .min=0, .max=2, .clamp=1 },
 282       .persistent = 1
 283    });
 284
 285    vg_convar_push( (struct vg_convar){
 286       .name = "walk_speed",
 287       .data = &k_walkspeed,
 288       .data_type = k_convar_dtype_f32,
 289       .opt_f32 = { .clamp = 0 },
 290       .persistent = 1
 291    });
 292
 293    vg_convar_push( (struct vg_convar){
 294       .name = "run_speed",
 295       .data = &k_runspeed,
 296       .data_type = k_convar_dtype_f32,
 297       .opt_f32 = { .clamp = 0 },
 298       .persistent = 1
 299    });
 300
 301    vg_convar_push( (struct vg_convar){
 302       .name = "walk_accel",
 303       .data = &k_walk_accel,
 304       .data_type = k_convar_dtype_f32,
 305       .opt_f32 = { .clamp = 0 },
 306       .persistent = 1
 307    });
 308
 309    vg_convar_push( (struct vg_convar){
 310       .name = "fc",
 311       .data = &freecam,
 312       .data_type = k_convar_dtype_i32,
 313       .opt_i32 = { .min=0, .max=1, .clamp=1 },
 314       .persistent = 1
 315    });
 316
 317    vg_convar_push( (struct vg_convar){
 318       .name = "fcs",
 319       .data = &fc_speed,
 320       .data_type = k_convar_dtype_f32,
 321       .opt_f32 = { .clamp = 0 },
 322       .persistent = 1
 323    });
 324
 325         vg_function_push( (struct vg_cmd){
 326                 .name = "reset",
 327                 .function = reset_player
 328         });
 329
 330    player.rewind_length = 0;
 331    player.rewind_buffer =
 332       vg_linear_alloc( vg_mem.rtmemory,
 333                        sizeof(struct rewind_frame) * PLAYER_REWIND_FRAMES );
 334
 335    player_model_init();
 336
 337    /* controls */
 338
 339 }
 340
 341 VG_STATIC void player_save_rewind_frame(void)
 342 {
 343    if( player.rewind_length < PLAYER_REWIND_FRAMES )
 344    {
 345       struct rewind_frame *fr =
 346          &player.rewind_buffer[ player.rewind_length ++ ];
 347
 348       v2_copy( player.angles, fr->ang );
 349       v3_copy( player.camera_pos, fr->pos );
 350
 351       player.rewind_incrementer = 0;
 352
 353       if( player.rewind_length > 1 )
 354       {
 355          player.rewind_total_length +=
 356             v3_dist( player.rewind_buffer[player.rewind_length-1].pos,
 357                      player.rewind_buffer[player.rewind_length-2].pos );
 358       }
 359    }
 360 }
 361
 362 /* Deal with input etc */
 363 VG_STATIC void player_update_pre(void)
 364 {
 365    struct player_phys *phys = &player.phys;
 366
 367    if( player.rewinding )
 368    {
 369       return;
 370    }
 371
 372    if( vg_input_button_down( player.input_reset ) )
 373    {
 374       if( player.is_dead )
 375       {
 376          reset_player( 0, NULL );
 377          audio_lock();
 378          audio_play_oneshot( &audio_ui[0], 1.0f );
 379          audio_unlock();
 380       }
 381       else
 382       {
 383          double delta = world.time - world.last_use;
 384
 385          if( (delta <= RESET_MAX_TIME) && (world.last_use != 0.0) )
 386          {
 387             player.rewinding = 1;
 388             player.rewind_sound_wait = 1;
 389             player.rewind_time = (float)player.rewind_length - 0.0001f;
 390             player_save_rewind_frame();
 391             audio_lock();
 392             audio_play_oneshot( &audio_rewind[0], 1.0f );
 393             audio_unlock();
 394
 395             /* based on analytical testing. DONT CHANGE!
 396              *
 397              *    time taken: y = (x^(4/5)) * 74.5
 398              *    inverse   : x = (2/149)^(4/5) * y^(4/5)
 399              */
 400
 401             float constant = powf( 2.0f/149.0f, 4.0f/5.0f ),
 402                   curve    = powf( player.rewind_total_length, 4.0f/5.0f );
 403
 404             player.rewind_predicted_time = constant * curve;
 405             player.diag_rewind_start = vg.time;
 406             player.diag_rewind_time  = player.rewind_time;
 407
 408             player.is_dead = 0;
 409             player.death_tick_allowance = 30;
 410             player_restore_frame();
 411
 412             if( !phys->on_board )
 413             {
 414                player.angles[0] = atan2f( -phys->rb.forward[2],
 415                                           -phys->rb.forward[0] );
 416             }
 417
 418             player.mdl.shoes[0] = 1;
 419             player.mdl.shoes[1] = 1;
 420
 421             world_routes_notify_reset();
 422
 423             /* apply 1 frame of movement */
 424             player_do_motion();
 425          }
 426          else
 427          {
 428             /* cant do that */
 429             audio_lock();
 430             audio_play_oneshot( &audio_rewind[4], 1.0f );
 431             audio_unlock();
 432          }
 433       }
 434    }
 435
 436    if( vg_input_button_down( player.input_switch_mode ) )
 437    {
 438       phys->on_board ^= 0x1;
 439
 440       audio_lock();
 441       if( phys->on_board )
 442       {
 443          v3_muladds( phys->rb.v, phys->rb.forward, 0.2f, phys->rb.v );
 444          audio_play_oneshot( &audio_lands[6], 1.0f );
 445       }
 446       else
 447       {
 448          audio_play_oneshot( &audio_lands[5], 1.0f );
 449       }
 450
 451       audio_unlock();
 452    }
 453 }
 454
 455 VG_STATIC void player_update_fixed(void)                                    /* 2 */
 456 {
 457    if( player.rewinding )
 458       return;
 459
 460    if( player.death_tick_allowance )
 461       player.death_tick_allowance --;
 462
 463    struct player_phys *phys = &player.phys;
 464
 465    if( player.is_dead )
 466    {
 467       player_ragdoll_iter();
 468    }
 469    else
 470    {
 471       player.rewind_incrementer ++;
 472
 473       if( player.rewind_incrementer > (u32)(0.25/VG_TIMESTEP_FIXED) )
 474       {
 475          player_save_rewind_frame();
 476       }
 477
 478       player_do_motion();
 479    }
 480 }
 481
 482 VG_STATIC void player_update_post(void)
 483 {
 484    for( int i=0; i<player.land_log_count; i++ )
 485       vg_line_cross( player.land_target_log[i],
 486             player.land_target_colours[i], 0.25f);
 487
 488    if( player.is_dead )
 489    {
 490       player_debug_ragdoll();
 491
 492       if( !freecam )
 493          player_animate_death_cam();
 494    }
 495    else
 496    {
 497       player_animate();
 498
 499       if( !freecam )
 500          player_animate_camera();
 501    }
 502
 503    if( freecam )
 504       player_freecam();
 505
 506
 507    /* CAMERA POSITIONING: LAYER 0 */
 508    v2_copy( player.angles, camera_angles );
 509    v3_copy( player.camera_pos, camera_pos );
 510
 511    if( player.rewinding )
 512    {
 513       if( player.rewind_time <= 0.0f )
 514       {
 515          double taken = vg.time - player.diag_rewind_start;
 516          vg_success( "Rewind took (rt, pl, tl): %f, %f, %f\n",
 517                            taken, player.diag_rewind_time,
 518                            player.rewind_total_length );
 519
 520          player.rewinding = 0;
 521          player.rewind_length = 1;
 522          player.rewind_total_length = 0.0f;
 523          player.rewind_incrementer = 0;
 524          world.sky_target_rate = 1.0;
 525       }
 526       else
 527       {
 528          world.sky_target_rate = -100.0;
 529          assert( player.rewind_length > 0 );
 530
 531          v2f override_angles;
 532          v3f override_pos;
 533
 534          float budget         = vg.time_delta,
 535                overall_length = player.rewind_length;
 536
 537          world_routes_rollback_time( player.rewind_time / overall_length );
 538
 539          for( int i=0; (i<10)&&(player.rewind_time>0.0f)&&(budget>0.0f); i ++ )
 540          {
 541             /* Interpolate frames */
 542             int i0 = floorf( player.rewind_time ),
 543                 i1 = VG_MIN( i0+1, player.rewind_length-1 );
 544
 545             struct rewind_frame *fr =  &player.rewind_buffer[i0],
 546                                 *fr1 = &player.rewind_buffer[i1];
 547
 548             float dist = vg_maxf( v3_dist( fr->pos, fr1->pos ), 0.001f ),
 549                   subl = vg_fractf( player.rewind_time ) + 0.001f,
 550
 551                   sramp= 3.0f-(1.0f/(0.4f+0.4f*player.rewind_time)),
 552                   speed = sramp*28.0f + 0.5f*player.rewind_time,
 553                   mod  = speed * (budget / dist),
 554
 555                   advl = vg_minf( mod, subl ),
 556                   advt = (advl / mod) * budget;
 557
 558             player.dist_accum += speed * advt;
 559             player.rewind_time -= advl;
 560             budget -= advt;
 561          }
 562
 563          player.rewind_time = vg_maxf( 0.0f, player.rewind_time );
 564
 565          float current_time = vg.time - player.diag_rewind_start,
 566                remaining    = player.rewind_predicted_time - current_time;
 567
 568          if( player.rewind_sound_wait )
 569          {
 570             if( player.rewind_predicted_time >= 6.5f )
 571             {
 572                if( remaining <= 6.5f )
 573                {
 574                   audio_lock();
 575                   audio_play_oneshot( &audio_rewind[3], 1.0f );
 576                   audio_unlock();
 577                   player.rewind_sound_wait = 0;
 578                }
 579             }
 580             else if( player.rewind_predicted_time >= 2.5f )
 581             {
 582                if( remaining <= 2.5f )
 583                {
 584                   audio_lock();
 585                   audio_play_oneshot( &audio_rewind[2], 1.0f );
 586                   audio_unlock();
 587                   player.rewind_sound_wait = 0;
 588                }
 589             }
 590             else if( player.rewind_predicted_time >= 1.5f )
 591             {
 592                if( remaining <= 1.5f )
 593                {
 594                   audio_lock();
 595                   audio_play_oneshot( &audio_rewind[1], 1.0f );
 596                   audio_unlock();
 597                   player.rewind_sound_wait = 0;
 598                }
 599             }
 600
 601
 602          }
 603
 604          int i0 = floorf( player.rewind_time ),
 605              i1 = VG_MIN( i0+1, player.rewind_length-1 );
 606
 607          struct rewind_frame *fr =  &player.rewind_buffer[i0],
 608                              *fr1 = &player.rewind_buffer[i1];
 609
 610          float sub = vg_fractf(player.rewind_time);
 611
 612          v3_lerp( fr->pos, fr1->pos, sub, override_pos );
 613          override_angles[0] = vg_alerpf( fr->ang[0], fr1->ang[0], sub );
 614          override_angles[1] = vg_lerpf ( fr->ang[1], fr1->ang[1], sub );
 615
 616          /* CAMERA POSITIONING: LAYER 1 */
 617          float blend = (4.0f-player.rewind_time) * 0.25f,
 618                c     = vg_clampf( blend, 0.0f, 1.0f );
 619
 620          camera_angles[0] = vg_alerpf(override_angles[0], player.angles[0], c);
 621          camera_angles[1] = vg_lerpf (override_angles[1], player.angles[1], c);
 622          v3_lerp( override_pos, player.camera_pos, c, camera_pos );
 623       }
 624    }
 625
 626    camera_update();
 627    player_audio();
 628 }
 629
 630 VG_STATIC void draw_player( m4x3f cam )
 631 {
 632    if( player.is_dead )
 633       player_model_copy_ragdoll();
 634
 635    shader_viewchar_use();
 636    vg_tex2d_bind( &tex_characters, 0 );
 637    shader_viewchar_uTexMain( 0 );
 638    shader_viewchar_uCamera( cam[3] );
 639    shader_viewchar_uPv( vg.pv );
 640    shader_link_standard_ub( _shader_viewchar.id, 2 );
 641    glUniformMatrix4x3fv( _uniform_viewchar_uTransforms,
 642                          player.mdl.sk.bone_count,
 643                          0,
 644                          (float *)player.mdl.sk.final_mtx );
 645
 646    mesh_bind( &player.mdl.player_meshes[cl_playermdl_id] );
 647    mesh_draw( &player.mdl.player_meshes[cl_playermdl_id] );
 648 }
 649
 650 /*
 651  * -----------------------------------------------------------------------------
 652  *                              API implementation
 653  * -----------------------------------------------------------------------------
 654  */
 655
 656 VG_STATIC float *player_get_pos(void)
 657 {
 658    return player.phys.rb.co;
 659 }
 660
 661 VG_STATIC void player_kill(void)
 662 {
 663    if( player.death_tick_allowance == 0 )
 664    {
 665       player.is_dead = 1;
 666       player_ragdoll_copy_model( player.phys.rb.v );
 667       world_routes_clear();
 668    }
 669 }
 670
 671 VG_STATIC float *player_cam_pos(void)
 672 {
 673    return player.camera_pos;
 674 }
 675
 676
 677 #endif /* PLAYER_H */