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    /* Camera */
  92    float air_blend;
  93    float air_time;
  94
  95    v3f camera_pos, smooth_localcam;
  96    v2f angles;
  97
  98    struct rewind_frame
  99    {
 100       v3f pos;
 101       v2f ang;
 102    }
 103    *rewind_buffer;
 104    u32 rewind_incrementer,
 105        rewind_length;
 106
 107    float rewind_time, rewind_total_length, rewind_predicted_time;
 108    double diag_rewind_start, diag_rewind_time;
 109    float dist_accum;
 110
 111    /* animation */
 112    double jump_time;
 113    float fslide,
 114          fdirz, fdirx,
 115          fstand,
 116          ffly,
 117          fpush,
 118          fairdir,
 119          fsetup,
 120          walk_timer,
 121          fjump,
 122          fonboard,
 123          frun;
 124
 125    float walk;
 126    int step_phase;
 127
 128    /* player model */
 129    struct player_model
 130    {
 131       glmesh player_meshes[3];
 132
 133       mdl_context meta;
 134       struct skeleton sk;
 135       struct skeleton_anim *anim_stand,
 136                            *anim_highg,
 137                            *anim_slide,
 138                            *anim_air,
 139                            *anim_push, *anim_push_reverse,
 140                            *anim_ollie, *anim_ollie_reverse,
 141                            *anim_grabs, *anim_stop,
 142                            *anim_walk, *anim_run, *anim_idle,
 143                            *anim_jump;
 144
 145       u32 id_hip,
 146           id_ik_hand_l,
 147           id_ik_hand_r,
 148           id_ik_elbow_l,
 149           id_ik_elbow_r,
 150           id_head;
 151
 152       v3f cam_pos;
 153
 154       struct ragdoll_part
 155       {
 156          u32 bone_id;
 157          v3f offset;
 158
 159          u32 use_limits;
 160          v3f limits[2];
 161
 162          rigidbody  rb;
 163          u32 parent;
 164       }
 165       ragdoll[32];
 166       u32 ragdoll_count;
 167
 168       int shoes[2];
 169    }
 170    mdl;
 171 }
 172 player =
 173 {
 174    .collide_front = { .type = k_rb_shape_sphere, .inf.sphere.radius = 0.3f },
 175    .collide_back  = { .type = k_rb_shape_sphere, .inf.sphere.radius = 0.3f }
 176 };
 177
 178 /*
 179  * API
 180  */
 181 VG_STATIC float *player_get_pos(void);
 182 VG_STATIC void player_kill(void);
 183 VG_STATIC float *player_cam_pos(void);
 184 VG_STATIC void player_save_frame(void);
 185 VG_STATIC void player_restore_frame(void);
 186 VG_STATIC void player_save_rewind_frame(void);
 187
 188 /*
 189  * Submodules
 190  */
 191 #include "player_physics.h"
 192 #include "player_ragdoll.h"
 193 #include "player_model.h"
 194 #include "player_animation.h"
 195 #include "player_audio.h"
 196
 197 /*
 198  * -----------------------------------------------------------------------------
 199  *                                    Events
 200  * -----------------------------------------------------------------------------
 201  */
 202
 203 VG_STATIC void player_init(void)                                            /* 1 */
 204 {
 205    rb_init( &player.phys.rb );
 206    rb_init( &player.collide_front );
 207    rb_init( &player.collide_back  );
 208
 209    vg_convar_push( (struct vg_convar){
 210       .name = "cl_playermdl_id",
 211       .data = &cl_playermdl_id,
 212       .data_type = k_convar_dtype_i32,
 213       .opt_i32 = { .min=0, .max=2, .clamp=1 },
 214       .persistent = 1
 215    });
 216
 217    vg_convar_push( (struct vg_convar){
 218       .name = "walk_speed",
 219       .data = &k_walkspeed,
 220       .data_type = k_convar_dtype_f32,
 221       .opt_f32 = { .clamp = 0 },
 222       .persistent = 1
 223    });
 224
 225    vg_convar_push( (struct vg_convar){
 226       .name = "run_speed",
 227       .data = &k_runspeed,
 228       .data_type = k_convar_dtype_f32,
 229       .opt_f32 = { .clamp = 0 },
 230       .persistent = 1
 231    });
 232
 233    vg_convar_push( (struct vg_convar){
 234       .name = "walk_accel",
 235       .data = &k_walk_accel,
 236       .data_type = k_convar_dtype_f32,
 237       .opt_f32 = { .clamp = 0 },
 238       .persistent = 1
 239    });
 240
 241    vg_convar_push( (struct vg_convar){
 242       .name = "fc",
 243       .data = &freecam,
 244       .data_type = k_convar_dtype_i32,
 245       .opt_i32 = { .min=0, .max=1, .clamp=1 },
 246       .persistent = 1
 247    });
 248
 249    vg_convar_push( (struct vg_convar){
 250       .name = "fcs",
 251       .data = &fc_speed,
 252       .data_type = k_convar_dtype_f32,
 253       .opt_f32 = { .clamp = 0 },
 254       .persistent = 1
 255    });
 256
 257         vg_function_push( (struct vg_cmd){
 258                 .name = "reset",
 259                 .function = reset_player
 260         });
 261
 262    player.rewind_length = 0;
 263    player.rewind_buffer =
 264       vg_linear_alloc( vg_mem.rtmemory,
 265                        sizeof(struct rewind_frame) * PLAYER_REWIND_FRAMES );
 266
 267    player_model_init();
 268 }
 269
 270 VG_STATIC void player_save_rewind_frame(void)
 271 {
 272    if( player.rewind_length < PLAYER_REWIND_FRAMES )
 273    {
 274       struct rewind_frame *fr =
 275          &player.rewind_buffer[ player.rewind_length ++ ];
 276
 277       v2_copy( player.angles, fr->ang );
 278       v3_copy( player.camera_pos, fr->pos );
 279
 280       player.rewind_incrementer = 0;
 281
 282       if( player.rewind_length > 1 )
 283       {
 284          player.rewind_total_length +=
 285             v3_dist( player.rewind_buffer[player.rewind_length-1].pos,
 286                      player.rewind_buffer[player.rewind_length-2].pos );
 287       }
 288    }
 289 }
 290
 291 /* Deal with input etc */
 292 VG_STATIC void player_update_pre(void)
 293 {
 294    struct player_phys *phys = &player.phys;
 295
 296    if( player.rewinding )
 297    {
 298       return;
 299    }
 300
 301    if( vg_get_button_down( "reset" ) )
 302    {
 303       double delta = world.time - world.last_use;
 304
 305       if( (delta <= RESET_MAX_TIME) && (world.last_use != 0.0) )
 306       {
 307          player.rewinding = 1;
 308          player.rewind_sound_wait = 1;
 309          player.rewind_time = (float)player.rewind_length - 0.0001f;
 310          player_save_rewind_frame();
 311          audio_lock();
 312          audio_play_oneshot( &audio_rewind[0], 1.0f );
 313          audio_unlock();
 314
 315          /* based on analytical testing. DONT CHANGE!
 316           *
 317           *    time taken: y = (x^(4/5)) * 74.5
 318           *    inverse   : x = (2/149)^(4/5) * y^(4/5)
 319           */
 320
 321          float constant = powf( 2.0f/149.0f, 4.0f/5.0f ),
 322                curve    = powf( player.rewind_total_length, 4.0f/5.0f );
 323
 324          player.rewind_predicted_time = constant * curve;
 325          player.diag_rewind_start = vg.time;
 326          player.diag_rewind_time  = player.rewind_time;
 327
 328          player.is_dead = 0;
 329          player.death_tick_allowance = 30;
 330          player_restore_frame();
 331
 332          if( !phys->on_board )
 333          {
 334             player.angles[0] = atan2f( -phys->rb.forward[2],
 335                                        -phys->rb.forward[0] );
 336          }
 337
 338          player.mdl.shoes[0] = 1;
 339          player.mdl.shoes[1] = 1;
 340
 341          world_routes_notify_reset();
 342
 343          /* apply 1 frame of movement */
 344          player_do_motion();
 345       }
 346    }
 347
 348    if( vg_get_button_down( "switchmode" ) )
 349    {
 350       phys->on_board ^= 0x1;
 351
 352       audio_lock();
 353       if( phys->on_board )
 354       {
 355          v3_muladds( phys->rb.v, phys->rb.forward, 0.2f, phys->rb.v );
 356          audio_play_oneshot( &audio_lands[6], 1.0f );
 357       }
 358       else
 359       {
 360          audio_play_oneshot( &audio_lands[5], 1.0f );
 361       }
 362
 363       audio_unlock();
 364    }
 365 }
 366
 367 VG_STATIC void player_update_fixed(void)                                    /* 2 */
 368 {
 369    if( player.rewinding )
 370       return;
 371
 372    if( player.death_tick_allowance )
 373       player.death_tick_allowance --;
 374
 375    struct player_phys *phys = &player.phys;
 376
 377    if( player.is_dead )
 378    {
 379       player_ragdoll_iter();
 380    }
 381    else
 382    {
 383       player.rewind_incrementer ++;
 384
 385       if( player.rewind_incrementer > (u32)(0.25/VG_TIMESTEP_FIXED) )
 386       {
 387          player_save_rewind_frame();
 388       }
 389
 390       player_do_motion();
 391    }
 392 }
 393
 394 VG_STATIC void player_update_post(void)
 395 {
 396    for( int i=0; i<player.land_log_count; i++ )
 397       vg_line_cross( player.land_target_log[i],
 398             player.land_target_colours[i], 0.25f);
 399
 400    if( player.is_dead )
 401    {
 402       player_debug_ragdoll();
 403
 404       if( !freecam )
 405          player_animate_death_cam();
 406    }
 407    else
 408    {
 409       player_animate();
 410
 411       if( !freecam )
 412          player_animate_camera();
 413    }
 414
 415    if( freecam )
 416       player_freecam();
 417
 418
 419    /* CAMERA POSITIONING: LAYER 0 */
 420    v2_copy( player.angles, camera_angles );
 421    v3_copy( player.camera_pos, camera_pos );
 422
 423    if( player.rewinding )
 424    {
 425       if( player.rewind_time <= 0.0f )
 426       {
 427          double taken = vg.time - player.diag_rewind_start;
 428          vg_success( "Rewind took (rt, pl, tl): %f, %f, %f\n",
 429                            taken, player.diag_rewind_time,
 430                            player.rewind_total_length );
 431
 432          player.rewinding = 0;
 433          player.rewind_length = 1;
 434          player.rewind_total_length = 0.0f;
 435          player.rewind_incrementer = 0;
 436          world.sky_target_rate = 1.0;
 437       }
 438       else
 439       {
 440          world.sky_target_rate = -100.0;
 441          assert( player.rewind_length > 0 );
 442
 443          v2f override_angles;
 444          v3f override_pos;
 445
 446          float budget         = vg.time_delta,
 447                overall_length = player.rewind_length;
 448
 449          world_routes_rollback_time( player.rewind_time / overall_length );
 450
 451          for( int i=0; (i<10)&&(player.rewind_time>0.0f)&&(budget>0.0f); i ++ )
 452          {
 453             /* Interpolate frames */
 454             int i0 = floorf( player.rewind_time ),
 455                 i1 = VG_MIN( i0+1, player.rewind_length-1 );
 456
 457             struct rewind_frame *fr =  &player.rewind_buffer[i0],
 458                                 *fr1 = &player.rewind_buffer[i1];
 459
 460             float dist = vg_maxf( v3_dist( fr->pos, fr1->pos ), 0.001f ),
 461                   subl = vg_fractf( player.rewind_time ) + 0.001f,
 462
 463                   sramp= 3.0f-(1.0f/(0.4f+0.4f*player.rewind_time)),
 464                   speed = sramp*28.0f + 0.5f*player.rewind_time,
 465                   mod  = speed * (budget / dist),
 466
 467                   advl = vg_minf( mod, subl ),
 468                   advt = (advl / mod) * budget;
 469
 470             player.dist_accum += speed * advt;
 471             player.rewind_time -= advl;
 472             budget -= advt;
 473          }
 474
 475 #if 0
 476          if( player.dist_accum >= 5.0f )
 477          {
 478             audio_lock();
 479             audio_player_playclip( &audio_rewind_player, &audio_rewind[4] );
 480             audio_unlock();
 481
 482             player.dist_accum -= 5.0f;
 483          }
 484 #endif
 485
 486          player.rewind_time = vg_maxf( 0.0f, player.rewind_time );
 487
 488          float current_time = vg.time - player.diag_rewind_start,
 489                remaining    = player.rewind_predicted_time - current_time;
 490
 491          if( player.rewind_sound_wait )
 492          {
 493             if( player.rewind_predicted_time >= 6.5f )
 494             {
 495                if( remaining <= 6.5f )
 496                {
 497                   audio_lock();
 498                   audio_play_oneshot( &audio_rewind[3], 1.0f );
 499                   audio_unlock();
 500                   player.rewind_sound_wait = 0;
 501                }
 502             }
 503             else if( player.rewind_predicted_time >= 2.5f )
 504             {
 505                if( remaining <= 2.5f )
 506                {
 507                   audio_lock();
 508                   audio_play_oneshot( &audio_rewind[2], 1.0f );
 509                   audio_unlock();
 510                   player.rewind_sound_wait = 0;
 511                }
 512             }
 513             else if( player.rewind_predicted_time >= 1.5f )
 514             {
 515                if( remaining <= 1.5f )
 516                {
 517                   audio_lock();
 518                   audio_play_oneshot( &audio_rewind[1], 1.0f );
 519                   audio_unlock();
 520                   player.rewind_sound_wait = 0;
 521                }
 522             }
 523
 524
 525          }
 526
 527          int i0 = floorf( player.rewind_time ),
 528              i1 = VG_MIN( i0+1, player.rewind_length-1 );
 529
 530          struct rewind_frame *fr =  &player.rewind_buffer[i0],
 531                              *fr1 = &player.rewind_buffer[i1];
 532
 533          float sub = vg_fractf(player.rewind_time);
 534
 535          v3_lerp( fr->pos, fr1->pos, sub, override_pos );
 536          override_angles[0] = vg_alerpf( fr->ang[0], fr1->ang[0], sub );
 537          override_angles[1] = vg_lerpf ( fr->ang[1], fr1->ang[1], sub );
 538
 539          /* CAMERA POSITIONING: LAYER 1 */
 540          float blend = (4.0f-player.rewind_time) * 0.25f,
 541                c     = vg_clampf( blend, 0.0f, 1.0f );
 542
 543          camera_angles[0] = vg_alerpf(override_angles[0], player.angles[0], c);
 544          camera_angles[1] = vg_lerpf (override_angles[1], player.angles[1], c);
 545          v3_lerp( override_pos, player.camera_pos, c, camera_pos );
 546       }
 547    }
 548
 549    camera_update();
 550    player_audio();
 551 }
 552
 553 VG_STATIC void draw_player( m4x3f cam )
 554 {
 555    if( player.is_dead )
 556       player_model_copy_ragdoll();
 557
 558    shader_viewchar_use();
 559    vg_tex2d_bind( &tex_characters, 0 );
 560    shader_viewchar_uTexMain( 0 );
 561    shader_viewchar_uCamera( cam[3] );
 562    shader_viewchar_uPv( vg.pv );
 563    shader_link_standard_ub( _shader_viewchar.id, 2 );
 564    glUniformMatrix4x3fv( _uniform_viewchar_uTransforms,
 565                          player.mdl.sk.bone_count,
 566                          0,
 567                          (float *)player.mdl.sk.final_mtx );
 568
 569    mesh_bind( &player.mdl.player_meshes[cl_playermdl_id] );
 570    mesh_draw( &player.mdl.player_meshes[cl_playermdl_id] );
 571 }
 572
 573 /*
 574  * -----------------------------------------------------------------------------
 575  *                              API implementation
 576  * -----------------------------------------------------------------------------
 577  */
 578
 579 VG_STATIC float *player_get_pos(void)
 580 {
 581    return player.phys.rb.co;
 582 }
 583
 584 VG_STATIC void player_kill(void)
 585 {
 586    if( player.death_tick_allowance == 0 )
 587    {
 588       player.is_dead = 1;
 589       player_ragdoll_copy_model( player.phys.rb.v );
 590    }
 591 }
 592
 593 VG_STATIC float *player_cam_pos(void)
 594 {
 595    return player.camera_pos;
 596 }
 597
 598
 599 #endif /* PLAYER_H */