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