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_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_jump = vg_create_named_input( "jump", k_input_type_button );
 229    player.input_push = vg_create_named_input( "push", k_input_type_axis_norm );
 230
 231    player.input_walkh = vg_create_named_input( "walk-h",
 232                                                k_input_type_axis );
 233    player.input_walkv = vg_create_named_input( "walk-v",
 234                                                k_input_type_axis );
 235
 236
 237    player.input_switch_mode = vg_create_named_input( "switch-mode",
 238                                                      k_input_type_button );
 239    player.input_reset = vg_create_named_input( "reset", k_input_type_button );
 240
 241    const char *default_cfg[] =
 242    {
 243       "bind  steer-h gp-ls-h",
 244       "bind -steer-h a",
 245       "bind +steer-h d",
 246
 247       "bind  steer-v gp-ls-v",
 248       "bind -steer-v w",
 249       "bind +steer-v s",
 250
 251       "bind  grab gp-rt",
 252       "bind +grab shift",
 253       "bind  grab-h gp-rs-h",
 254       "bind  grab-v gp-rs-v",
 255
 256       "bind jump space",
 257       "bind jump gp-a",
 258
 259       "bind  push gp-lt",
 260       "bind +push w",
 261
 262       "bind  walk-h  gp-ls-h",
 263       "bind  walk-v -gp-ls-v",
 264       "bind +walk-h d",
 265       "bind -walk-h a",
 266       "bind +walk-v w",
 267       "bind -walk-v s",
 268
 269       "bind reset gp-lb",
 270       "bind reset r",
 271
 272       "bind switch-mode gp-y",
 273       "bind switch-mode e",
 274    };
 275
 276    for( int i=0; i<vg_list_size(default_cfg); i++ )
 277       execute_console_input(default_cfg[i]);
 278
 279    rb_init( &player.phys.rb );
 280    rb_init( &player.collide_front );
 281    rb_init( &player.collide_back  );
 282
 283    vg_convar_push( (struct vg_convar){
 284       .name = "cl_playermdl_id",
 285       .data = &cl_playermdl_id,
 286       .data_type = k_convar_dtype_i32,
 287       .opt_i32 = { .min=0, .max=2, .clamp=1 },
 288       .persistent = 1
 289    });
 290
 291    vg_convar_push( (struct vg_convar){
 292       .name = "walk_speed",
 293       .data = &k_walkspeed,
 294       .data_type = k_convar_dtype_f32,
 295       .opt_f32 = { .clamp = 0 },
 296       .persistent = 0
 297    });
 298
 299    vg_convar_push( (struct vg_convar){
 300       .name = "run_speed",
 301       .data = &k_runspeed,
 302       .data_type = k_convar_dtype_f32,
 303       .opt_f32 = { .clamp = 0 },
 304       .persistent = 1
 305    });
 306
 307    vg_convar_push( (struct vg_convar){
 308       .name = "walk_accel",
 309       .data = &k_walk_accel,
 310       .data_type = k_convar_dtype_f32,
 311       .opt_f32 = { .clamp = 0 },
 312       .persistent = 1
 313    });
 314
 315    vg_convar_push( (struct vg_convar){
 316       .name = "fc",
 317       .data = &freecam,
 318       .data_type = k_convar_dtype_i32,
 319       .opt_i32 = { .min=0, .max=1, .clamp=1 },
 320       .persistent = 1
 321    });
 322
 323    vg_convar_push( (struct vg_convar){
 324       .name = "fcs",
 325       .data = &fc_speed,
 326       .data_type = k_convar_dtype_f32,
 327       .opt_f32 = { .clamp = 0 },
 328       .persistent = 1
 329    });
 330
 331         vg_function_push( (struct vg_cmd){
 332                 .name = "reset",
 333                 .function = reset_player
 334         });
 335
 336    player.rewind_length = 0;
 337    player.rewind_buffer =
 338       vg_linear_alloc( vg_mem.rtmemory,
 339                        sizeof(struct rewind_frame) * PLAYER_REWIND_FRAMES );
 340
 341    player_model_init();
 342
 343    /* controls */
 344
 345 }
 346
 347 VG_STATIC void player_save_rewind_frame(void)
 348 {
 349    if( player.rewind_length < PLAYER_REWIND_FRAMES )
 350    {
 351       struct rewind_frame *fr =
 352          &player.rewind_buffer[ player.rewind_length ++ ];
 353
 354       v2_copy( player.angles, fr->ang );
 355       v3_copy( player.camera_pos, fr->pos );
 356
 357       player.rewind_incrementer = 0;
 358
 359       if( player.rewind_length > 1 )
 360       {
 361          player.rewind_total_length +=
 362             v3_dist( player.rewind_buffer[player.rewind_length-1].pos,
 363                      player.rewind_buffer[player.rewind_length-2].pos );
 364       }
 365    }
 366 }
 367
 368 /*
 369  * Free camera movement
 370  */
 371 VG_STATIC void player_mouseview(void)
 372 {
 373    if( ui_want_mouse() )
 374       return;
 375
 376    v2_muladds( player.angles, vg.mouse_delta, 0.0025f, player.angles );
 377    player.angles[1] = vg_clampf( player.angles[1], -VG_PIf*0.5f, VG_PIf*0.5f );
 378 }
 379
 380 /* Deal with input etc */
 381 VG_STATIC void player_update_pre(void)
 382 {
 383    struct player_phys *phys = &player.phys;
 384
 385    if( player.rewinding )
 386    {
 387       return;
 388    }
 389
 390    if( vg_input_button_down( player.input_reset ) )
 391    {
 392       if( player.is_dead )
 393       {
 394          reset_player( 0, NULL );
 395          audio_lock();
 396          audio_play_oneshot( &audio_ui[0], 1.0f );
 397          audio_unlock();
 398       }
 399       else
 400       {
 401          double delta = world.time - world.last_use;
 402
 403          if( (delta <= RESET_MAX_TIME) && (world.last_use != 0.0) )
 404          {
 405             player.rewinding = 1;
 406             player.rewind_sound_wait = 1;
 407             player.rewind_time = (float)player.rewind_length - 0.0001f;
 408             player_save_rewind_frame();
 409             audio_lock();
 410             audio_play_oneshot( &audio_rewind[0], 1.0f );
 411             audio_unlock();
 412
 413             /* based on analytical testing. DONT CHANGE!
 414              *
 415              *    time taken: y = (x^(4/5)) * 74.5
 416              *    inverse   : x = (2/149)^(4/5) * y^(4/5)
 417              */
 418
 419             float constant = powf( 2.0f/149.0f, 4.0f/5.0f ),
 420                   curve    = powf( player.rewind_total_length, 4.0f/5.0f );
 421
 422             player.rewind_predicted_time = constant * curve;
 423             player.diag_rewind_start = vg.time;
 424             player.diag_rewind_time  = player.rewind_time;
 425
 426             player.is_dead = 0;
 427             player.death_tick_allowance = 30;
 428             player_restore_frame();
 429
 430             if( !phys->on_board )
 431             {
 432                player.angles[0] = atan2f( -phys->rb.forward[2],
 433                                           -phys->rb.forward[0] );
 434             }
 435
 436             player.mdl.shoes[0] = 1;
 437             player.mdl.shoes[1] = 1;
 438
 439             world_routes_notify_reset();
 440
 441             /* apply 1 frame of movement */
 442             player_do_motion();
 443          }
 444          else
 445          {
 446             /* cant do that */
 447             audio_lock();
 448             audio_play_oneshot( &audio_rewind[4], 1.0f );
 449             audio_unlock();
 450          }
 451       }
 452    }
 453
 454    if( vg_input_button_down( player.input_switch_mode ) )
 455    {
 456       phys->on_board ^= 0x1;
 457
 458       audio_lock();
 459       if( phys->on_board )
 460       {
 461          v3_muladds( phys->rb.v, phys->rb.forward, 0.2f, phys->rb.v );
 462          audio_play_oneshot( &audio_lands[6], 1.0f );
 463       }
 464       else
 465       {
 466          audio_play_oneshot( &audio_lands[5], 1.0f );
 467       }
 468
 469       audio_unlock();
 470    }
 471
 472    if( !phys->on_board )
 473       player_mouseview();
 474 }
 475
 476 VG_STATIC void player_update_fixed(void)                                    /* 2 */
 477 {
 478    if( player.rewinding )
 479       return;
 480
 481    if( player.death_tick_allowance )
 482       player.death_tick_allowance --;
 483
 484    struct player_phys *phys = &player.phys;
 485
 486    if( player.is_dead )
 487    {
 488       player_ragdoll_iter();
 489    }
 490    else
 491    {
 492       player.rewind_incrementer ++;
 493
 494       if( player.rewind_incrementer > (u32)(0.25/VG_TIMESTEP_FIXED) )
 495       {
 496          player_save_rewind_frame();
 497       }
 498
 499       player_do_motion();
 500    }
 501 }
 502
 503 VG_STATIC void player_update_post(void)
 504 {
 505    for( int i=0; i<player.land_log_count; i++ )
 506       vg_line_cross( player.land_target_log[i],
 507             player.land_target_colours[i], 0.25f);
 508
 509    if( player.is_dead )
 510    {
 511       player_debug_ragdoll();
 512
 513       if( !freecam )
 514          player_animate_death_cam();
 515    }
 516    else
 517    {
 518       player_animate();
 519
 520       if( !freecam )
 521          player_animate_camera();
 522    }
 523
 524    if( freecam )
 525       player_freecam();
 526
 527
 528    /* CAMERA POSITIONING: LAYER 0 */
 529    v2_copy( player.angles, camera_angles );
 530    v3_copy( player.camera_pos, camera_pos );
 531
 532    if( player.rewinding )
 533    {
 534       if( player.rewind_time <= 0.0f )
 535       {
 536          double taken = vg.time - player.diag_rewind_start;
 537          vg_success( "Rewind took (rt, pl, tl): %f, %f, %f\n",
 538                            taken, player.diag_rewind_time,
 539                            player.rewind_total_length );
 540
 541          player.rewinding = 0;
 542          player.rewind_length = 1;
 543          player.rewind_total_length = 0.0f;
 544          player.rewind_incrementer = 0;
 545          world.sky_target_rate = 1.0;
 546       }
 547       else
 548       {
 549          world.sky_target_rate = -100.0;
 550          assert( player.rewind_length > 0 );
 551
 552          v2f override_angles;
 553          v3f override_pos;
 554
 555          float budget         = vg.time_delta,
 556                overall_length = player.rewind_length;
 557
 558          world_routes_rollback_time( player.rewind_time / overall_length );
 559
 560          for( int i=0; (i<10)&&(player.rewind_time>0.0f)&&(budget>0.0f); i ++ )
 561          {
 562             /* Interpolate frames */
 563             int i0 = floorf( player.rewind_time ),
 564                 i1 = VG_MIN( i0+1, player.rewind_length-1 );
 565
 566             struct rewind_frame *fr =  &player.rewind_buffer[i0],
 567                                 *fr1 = &player.rewind_buffer[i1];
 568
 569             float dist = vg_maxf( v3_dist( fr->pos, fr1->pos ), 0.001f ),
 570                   subl = vg_fractf( player.rewind_time ) + 0.001f,
 571
 572                   sramp= 3.0f-(1.0f/(0.4f+0.4f*player.rewind_time)),
 573                   speed = sramp*28.0f + 0.5f*player.rewind_time,
 574                   mod  = speed * (budget / dist),
 575
 576                   advl = vg_minf( mod, subl ),
 577                   advt = (advl / mod) * budget;
 578
 579             player.dist_accum += speed * advt;
 580             player.rewind_time -= advl;
 581             budget -= advt;
 582          }
 583
 584          player.rewind_time = vg_maxf( 0.0f, player.rewind_time );
 585
 586          float current_time = vg.time - player.diag_rewind_start,
 587                remaining    = player.rewind_predicted_time - current_time;
 588
 589          if( player.rewind_sound_wait )
 590          {
 591             if( player.rewind_predicted_time >= 6.5f )
 592             {
 593                if( remaining <= 6.5f )
 594                {
 595                   audio_lock();
 596                   audio_play_oneshot( &audio_rewind[3], 1.0f );
 597                   audio_unlock();
 598                   player.rewind_sound_wait = 0;
 599                }
 600             }
 601             else if( player.rewind_predicted_time >= 2.5f )
 602             {
 603                if( remaining <= 2.5f )
 604                {
 605                   audio_lock();
 606                   audio_play_oneshot( &audio_rewind[2], 1.0f );
 607                   audio_unlock();
 608                   player.rewind_sound_wait = 0;
 609                }
 610             }
 611             else if( player.rewind_predicted_time >= 1.5f )
 612             {
 613                if( remaining <= 1.5f )
 614                {
 615                   audio_lock();
 616                   audio_play_oneshot( &audio_rewind[1], 1.0f );
 617                   audio_unlock();
 618                   player.rewind_sound_wait = 0;
 619                }
 620             }
 621
 622
 623          }
 624
 625          int i0 = floorf( player.rewind_time ),
 626              i1 = VG_MIN( i0+1, player.rewind_length-1 );
 627
 628          struct rewind_frame *fr =  &player.rewind_buffer[i0],
 629                              *fr1 = &player.rewind_buffer[i1];
 630
 631          float sub = vg_fractf(player.rewind_time);
 632
 633          v3_lerp( fr->pos, fr1->pos, sub, override_pos );
 634          override_angles[0] = vg_alerpf( fr->ang[0], fr1->ang[0], sub );
 635          override_angles[1] = vg_lerpf ( fr->ang[1], fr1->ang[1], sub );
 636
 637          /* CAMERA POSITIONING: LAYER 1 */
 638          float blend = (4.0f-player.rewind_time) * 0.25f,
 639                c     = vg_clampf( blend, 0.0f, 1.0f );
 640
 641          camera_angles[0] = vg_alerpf(override_angles[0], player.angles[0], c);
 642          camera_angles[1] = vg_lerpf (override_angles[1], player.angles[1], c);
 643          v3_lerp( override_pos, player.camera_pos, c, camera_pos );
 644       }
 645    }
 646
 647    camera_update();
 648    player_audio();
 649 }
 650
 651 VG_STATIC void draw_player( m4x3f cam )
 652 {
 653    if( player.is_dead )
 654       player_model_copy_ragdoll();
 655
 656    shader_viewchar_use();
 657    vg_tex2d_bind( &tex_characters, 0 );
 658    shader_viewchar_uTexMain( 0 );
 659    shader_viewchar_uCamera( cam[3] );
 660    shader_viewchar_uPv( vg.pv );
 661    shader_link_standard_ub( _shader_viewchar.id, 2 );
 662    glUniformMatrix4x3fv( _uniform_viewchar_uTransforms,
 663                          player.mdl.sk.bone_count,
 664                          0,
 665                          (float *)player.mdl.sk.final_mtx );
 666
 667    mesh_bind( &player.mdl.player_meshes[cl_playermdl_id] );
 668    mesh_draw( &player.mdl.player_meshes[cl_playermdl_id] );
 669 }
 670
 671 /*
 672  * -----------------------------------------------------------------------------
 673  *                              API implementation
 674  * -----------------------------------------------------------------------------
 675  */
 676
 677 VG_STATIC float *player_get_pos(void)
 678 {
 679    return player.phys.rb.co;
 680 }
 681
 682 VG_STATIC void player_kill(void)
 683 {
 684    if( player.death_tick_allowance == 0 )
 685    {
 686       player.is_dead = 1;
 687       player_ragdoll_copy_model( player.phys.rb.v );
 688       world_routes_clear();
 689    }
 690 }
 691
 692 VG_STATIC float *player_cam_pos(void)
 693 {
 694    return player.camera_pos;
 695 }
 696
 697
 698 #endif /* PLAYER_H */