world_entity.c

   1 #include "vg/vg_steam.h"
   2 #include "vg/vg_steam_user_stats.h"
   3 #include "model.h"
   4 #include "entity.h"
   5 #include "world.h"
   6 #include "world_load.h"
   7 #include "save.h"
   8 #include "vg/vg_msg.h"
   9 #include "menu.h"
  10 #include "ent_challenge.h"
  11 #include "ent_skateshop.h"
  12 #include "ent_route.h"
  13 #include "ent_traffic.h"
  14 #include "ent_glider.h"
  15 #include "ent_region.h"
  16 #include "input.h"
  17 #include "player_walk.h"
  18
  19 bh_system bh_system_entity_list =
  20 {
  21    .expand_bound = entity_bh_expand_bound,
  22    .item_centroid = entity_bh_centroid,
  23    .item_closest = entity_bh_closest,
  24    .item_swap = entity_bh_swap,
  25    .item_debug = entity_bh_debug,
  26    .cast_ray = NULL
  27 };
  28
  29 void world_entity_focus( u32 entity_id )
  30 {
  31    localplayer.immobile = 1;
  32    menu.disable_open = 1;
  33
  34    v3_zero( localplayer.rb.v );
  35    v3_zero( localplayer.rb.w );
  36    player_walk.move_speed = 0.0f;
  37    world_static.focused_entity = entity_id;
  38    skaterift.activity = k_skaterift_ent_focus;
  39 }
  40
  41 void world_entity_unfocus(void)
  42 {
  43    localplayer.immobile = 0;
  44    skaterift.activity = k_skaterift_default;
  45    menu.disable_open = 0;
  46    srinput.state = k_input_state_resume;
  47 }
  48
  49 void world_entity_focus_camera( world_instance *world, u32 uid )
  50 {
  51    if( mdl_entity_id_type( uid ) == k_ent_camera ){
  52       u32 index = mdl_entity_id_id( uid );
  53       ent_camera *cam = mdl_arritm( &world->ent_camera, index );
  54
  55       v3f dir = {0.0f,-1.0f,0.0f};
  56       mdl_transform_vector( &cam->transform, dir, dir );
  57       v3_angles( dir, world_static.focus_cam.angles );
  58       v3_copy( cam->transform.co, world_static.focus_cam.pos );
  59       world_static.focus_cam.fov = cam->fov;
  60    }
  61    else {
  62       vg_camera_copy( &localplayer.cam, &world_static.focus_cam );
  63
  64       /* TODO ? */
  65       world_static.focus_cam.nearz = localplayer.cam.nearz;
  66       world_static.focus_cam.farz = localplayer.cam.farz;
  67    }
  68 }
  69
  70 /* logic preupdate */
  71 void world_entity_focus_preupdate(void)
  72 {
  73    f32 rate = vg_minf( 1.0f, vg.time_frame_delta * 2.0f );
  74    int active = 0;
  75    if( skaterift.activity == k_skaterift_ent_focus )
  76       active = 1;
  77
  78    vg_slewf( &world_static.focus_strength, active,
  79              vg.time_frame_delta * (1.0f/0.5f) );
  80
  81    u32 type = mdl_entity_id_type( world_static.focused_entity ),
  82        index = mdl_entity_id_id( world_static.focused_entity );
  83    world_instance *world = world_current_instance();
  84
  85    /* TODO: Table. */
  86    if( type == k_ent_skateshop ){
  87       ent_skateshop *skateshop = mdl_arritm( &world->ent_skateshop, index );
  88       ent_skateshop_preupdate( skateshop, active );
  89    }
  90    else if( type == k_ent_challenge ){
  91       ent_challenge *challenge = mdl_arritm( &world->ent_challenge, index );
  92       ent_challenge_preupdate( challenge, active );
  93    }
  94    else if( type == k_ent_route ){
  95       ent_route *route = mdl_arritm( &world->ent_route, index );
  96       ent_route_preupdate( route, active );
  97    }
  98 }
  99
 100 /* additional renderings like text etc.. */
 101 void world_entity_focus_render(void)
 102 {
 103    world_instance *world = world_current_instance();
 104    if( skaterift.activity != k_skaterift_ent_focus ){
 105       skateshop_render_nonfocused( world, &skaterift.cam );
 106       return;
 107    }
 108
 109    u32 type = mdl_entity_id_type( world_static.focused_entity ),
 110        index = mdl_entity_id_id( world_static.focused_entity );
 111
 112    if( type == k_ent_skateshop ){
 113       ent_skateshop *skateshop = mdl_arritm( &world->ent_skateshop, index );
 114       skateshop_render( skateshop );
 115    }
 116    else if( type == k_ent_challenge ){}
 117    else if( type == k_ent_route ){}
 118    else if( type == k_ent_miniworld ){}
 119    else {
 120       vg_fatal_error( "Programming error\n" );
 121    }
 122 }
 123
 124 void world_gen_entities_init( world_instance *world )
 125 {
 126    /* lights */
 127    for( u32 j=0; j<mdl_arrcount(&world->ent_light); j ++ ){
 128       ent_light *light = mdl_arritm( &world->ent_light, j );
 129
 130       m4x3f to_world;
 131       q_m3x3( light->transform.q, to_world );
 132       v3_copy( light->transform.co, to_world[3] );
 133       m4x3_invert_affine( to_world, light->inverse_world );
 134
 135       light->angle_sin_cos[0] = sinf( light->angle * 0.5f );
 136       light->angle_sin_cos[1] = cosf( light->angle * 0.5f );
 137    }
 138
 139    /* gates */
 140    for( u32 j=0; j<mdl_arrcount(&world->ent_gate); j ++ ){
 141       ent_gate *gate = mdl_arritm( &world->ent_gate, j );
 142
 143       if( !(gate->flags & k_ent_gate_nonlocal) ) {
 144          gate_transform_update( gate );
 145       }
 146    }
 147
 148    vg_async_call( world_link_nonlocal_async, world, 0 );
 149
 150    /* water */
 151    for( u32 j=0; j<mdl_arrcount(&world->ent_water); j++ ){
 152       ent_water *water = mdl_arritm( &world->ent_water, j );
 153       if( world->water.enabled ){
 154          vg_warn( "Multiple water surfaces in level!\n" );
 155          break;
 156       }
 157
 158       world->water.enabled = 1;
 159       water_set_surface( world, water->transform.co[1] );
 160    }
 161
 162    /* volumes */
 163    for( u32 j=0; j<mdl_arrcount(&world->ent_volume); j++ ){
 164       ent_volume *volume = mdl_arritm( &world->ent_volume, j );
 165       mdl_transform_m4x3( &volume->transform, volume->to_world );
 166       m4x3_invert_full( volume->to_world, volume->to_local );
 167    }
 168
 169    /* audio packs */
 170    for( u32 j=0; j<mdl_arrcount(&world->ent_audio); j++ ){
 171       ent_audio *audio = mdl_arritm( &world->ent_audio, j );
 172
 173       for( u32 k=0; k<audio->clip_count; k++ ){
 174          ent_audio_clip *clip = mdl_arritm( &world->ent_audio_clip,
 175                                              audio->clip_start+k );
 176
 177          if( clip->_.file.pack_size ){
 178             u32 size = clip->_.file.pack_size,
 179                 offset = clip->_.file.pack_offset;
 180
 181             /* embedded files are fine to clear the scratch buffer, only
 182              * external audio uses it */
 183
 184             vg_linear_clear( vg_mem.scratch );
 185             void *data = vg_linear_alloc( vg_mem.scratch,
 186                                           clip->_.file.pack_size );
 187
 188             mdl_fread_pack_file( &world->meta, &clip->_.file, data );
 189
 190             clip->_.clip.path = NULL;
 191             clip->_.clip.flags = audio->flags;
 192             clip->_.clip.data = data;
 193             clip->_.clip.size = size;
 194          }
 195          else{
 196             clip->_.clip.path = mdl_pstr(&world->meta,clip->_.file.pstr_path);
 197             clip->_.clip.flags = audio->flags;
 198             clip->_.clip.data = NULL;
 199             clip->_.clip.size = 0;
 200          }
 201
 202          audio_clip_load( &clip->_.clip, world->heap );
 203       }
 204    }
 205
 206    /* create generic entity hierachy for those who need it */
 207    u32 indexed_count = 0;
 208    struct {
 209       u32 type;
 210       mdl_array_ptr *array;
 211    }
 212    indexables[] = {
 213       { k_ent_gate, &world->ent_gate },
 214       { k_ent_objective, &world->ent_objective },
 215       { k_ent_volume, &world->ent_volume },
 216       { k_ent_challenge, &world->ent_challenge },
 217       { k_ent_glider, &world->ent_glider }
 218    };
 219
 220    for( u32 i=0; i<vg_list_size(indexables); i++ )
 221       indexed_count += mdl_arrcount( indexables[i].array );
 222    vg_info( "indexing %u entities\n", indexed_count );
 223
 224    world->entity_list = vg_linear_alloc( world->heap,
 225                                          vg_align8(indexed_count*sizeof(u32)));
 226
 227    u32 index=0;
 228    for( u32 i=0; i<vg_list_size(indexables); i++ ){
 229       u32 type  = indexables[i].type,
 230           count = mdl_arrcount( indexables[i].array );
 231
 232       for( u32 j=0; j<count; j ++ )
 233          world->entity_list[index ++] = mdl_entity_id( type, j );
 234    }
 235
 236    world->entity_bh = bh_create( world->heap, &bh_system_entity_list, world,
 237                                  indexed_count, 2 );
 238
 239    world->tar_min = world->entity_bh->nodes[0].bbx[0][1];
 240    world->tar_max = world->entity_bh->nodes[0].bbx[1][1] + 20.0f;
 241
 242    for( u32 i=0; i<mdl_arrcount(&world->ent_marker); i++ ){
 243       ent_marker *marker = mdl_arritm( &world->ent_marker, i );
 244
 245       if( MDL_CONST_PSTREQ( &world->meta, marker->pstr_alias, "tar_min" ) )
 246          world->tar_min = marker->transform.co[1];
 247
 248       if( MDL_CONST_PSTREQ( &world->meta, marker->pstr_alias, "tar_max" ) )
 249          world->tar_max = marker->transform.co[1];
 250    }
 251 }
 252
 253 ent_spawn *world_find_closest_spawn( world_instance *world, v3f position )
 254 {
 255    ent_spawn *rp = NULL, *r;
 256    float min_dist = INFINITY;
 257
 258    for( u32 i=0; i<mdl_arrcount(&world->ent_spawn); i++ ){
 259       r = mdl_arritm( &world->ent_spawn, i );
 260       float d = v3_dist2( r->transform.co, position );
 261
 262       if( d < min_dist ){
 263          min_dist = d;
 264          rp = r;
 265       }
 266    }
 267
 268    if( !rp ){
 269       if( mdl_arrcount(&world->ent_spawn) ){
 270          vg_warn( "Invalid distances to spawns.. defaulting to first one.\n" );
 271          return mdl_arritm( &world->ent_spawn, 0 );
 272       }
 273       else{
 274          vg_error( "There are no spawns in the level!\n" );
 275       }
 276    }
 277
 278    return rp;
 279 }
 280
 281 ent_spawn *world_find_spawn_by_name( world_instance *world, const char *name )
 282 {
 283    ent_spawn *rp = NULL, *r;
 284    for( u32 i=0; i<mdl_arrcount(&world->ent_spawn); i++ ){
 285       r = mdl_arritm( &world->ent_spawn, i );
 286       if( !strcmp( mdl_pstr(&world->meta, r->pstr_name), name ) ){
 287          rp = r;
 288          break;
 289       }
 290    }
 291
 292    if( !rp )
 293       vg_warn( "No spawn named '%s'\n", name );
 294
 295    return rp;
 296 }
 297
 298 void world_default_spawn_pos( world_instance *world, v3f pos )
 299 {
 300    ent_spawn *rp = world_find_spawn_by_name( world, "start" );
 301    if( !rp ) rp = world_find_closest_spawn( world, (v3f){0,0,0} );
 302    if( rp )
 303       v3_copy( rp->transform.co, pos );
 304    else
 305    {
 306       vg_error( "There are no valid spawns in the world\n" );
 307       v3_zero( pos );
 308    }
 309 }
 310
 311 void ent_volume_call( world_instance *world, ent_call *call )
 312 {
 313    u32 index = mdl_entity_id_id( call->id );
 314    ent_volume *volume = mdl_arritm( &world->ent_volume, index );
 315    if( !volume->target ) return;
 316
 317    if( call->function == k_ent_function_trigger ){
 318       call->id = volume->target;
 319
 320       if( volume->flags & k_ent_volume_flag_particles ){
 321          float *co = alloca( sizeof(float)*3 );
 322          co[0] = vg_randf64(&vg.rand)*2.0f-1.0f;
 323          co[1] = vg_randf64(&vg.rand)*2.0f-1.0f;
 324          co[2] = vg_randf64(&vg.rand)*2.0f-1.0f;
 325          m4x3_mulv( volume->to_world, co, co );
 326
 327          call->function = k_ent_function_particle_spawn;
 328          call->data = co;
 329          entity_call( world, call );
 330       }
 331       else{
 332          call->function = volume->trigger.event;
 333          entity_call( world, call );
 334       }
 335    }
 336    else if( call->function == k_ent_function_trigger_leave ){
 337       call->id = volume->target;
 338
 339       if( volume->flags & k_ent_volume_flag_particles ){
 340          vg_warn( "Invalid condition; calling leave on particle volume.\n" );
 341       }
 342       else{
 343          call->function = volume->trigger.event_leave;
 344          entity_call( world, call );
 345       }
 346    }
 347 }
 348
 349 void ent_audio_call( world_instance *world, ent_call *call )
 350 {
 351    if( world->status == k_world_status_unloading ){
 352       vg_warn( "cannot modify audio while unloading world\n" );
 353       return;
 354    }
 355
 356    u8 world_id = (world - world_static.instances) + 1;
 357    u32 index = mdl_entity_id_id( call->id );
 358    ent_audio *audio = mdl_arritm( &world->ent_audio, index );
 359
 360    v3f sound_co;
 361
 362    if( call->function == k_ent_function_particle_spawn ){
 363       v3_copy( call->data, sound_co );
 364    }
 365    else if( call->function == k_ent_function_trigger ){
 366       v3_copy( audio->transform.co, sound_co );
 367    }
 368    else
 369       return;
 370
 371    float chance = vg_randf64(&vg.rand)*100.0f,
 372          bar = 0.0f;
 373
 374    for( u32 i=0; i<audio->clip_count; i++ ){
 375       ent_audio_clip *clip = mdl_arritm( &world->ent_audio_clip,
 376                                           audio->clip_start+i );
 377
 378       float mod = world->probabilities[ audio->probability_curve ],
 379             p   = clip->probability * mod;
 380
 381       bar += p;
 382       if( chance < bar ){
 383          audio_lock();
 384
 385          if( audio->behaviour == k_channel_behaviour_unlimited ){
 386             audio_oneshot_3d( &clip->_.clip, sound_co,
 387                               audio->transform.s[0],
 388                               audio->volume );
 389          }
 390          else if( audio->behaviour == k_channel_behaviour_discard_if_full ){
 391             audio_channel *ch =
 392                audio_get_group_idle_channel( audio->group,
 393                                              audio->max_channels );
 394
 395             if( ch ){
 396                audio_channel_init( ch, &clip->_.clip, audio->flags );
 397                audio_channel_group( ch, audio->group );
 398                audio_channel_world( ch, world_id );
 399                audio_channel_set_spacial( ch, sound_co, audio->transform.s[0] );
 400                audio_channel_edit_volume( ch, audio->volume, 1 );
 401                ch = audio_relinquish_channel( ch );
 402             }
 403          }
 404          else if( audio->behaviour == k_channel_behaviour_crossfade_if_full){
 405             audio_channel *ch =
 406                audio_get_group_idle_channel( audio->group,
 407                                              audio->max_channels );
 408
 409             /* group is full */
 410             if( !ch ){
 411                audio_channel *existing =
 412                   audio_get_group_first_active_channel( audio->group );
 413
 414                if( existing ){
 415                   if( existing->source == &clip->_.clip ){
 416                      audio_unlock();
 417                      return;
 418                   }
 419
 420                   existing->group = 0;
 421                   existing = audio_channel_fadeout(existing, audio->crossfade);
 422                }
 423
 424                ch = audio_get_first_idle_channel();
 425             }
 426
 427             if( ch ){
 428                audio_channel_init( ch, &clip->_.clip, audio->flags );
 429                audio_channel_group( ch, audio->group );
 430                audio_channel_world( ch, world_id );
 431                audio_channel_fadein( ch, audio->crossfade );
 432                ch = audio_relinquish_channel( ch );
 433             }
 434          }
 435
 436          audio_unlock();
 437          return;
 438       }
 439    }
 440 }
 441
 442
 443 void ent_ccmd_call( world_instance *world, ent_call *call )
 444 {
 445    if( call->function == k_ent_function_trigger ){
 446       u32 index = mdl_entity_id_id( call->id );
 447       ent_ccmd *ccmd = mdl_arritm( &world->ent_ccmd, index );
 448       vg_execute_console_input( mdl_pstr(&world->meta, ccmd->pstr_command),
 449                                 0 );
 450    }
 451 }
 452
 453 /*
 454  * BVH implementation
 455  * ----------------------------------------------------------------------------
 456  */
 457
 458 void entity_bh_expand_bound( void *user, boxf bound, u32 item_index )
 459 {
 460    world_instance *world = user;
 461
 462    u32 id    = world->entity_list[ item_index ],
 463        type  = mdl_entity_id_type( id ),
 464        index = mdl_entity_id_id( id );
 465
 466    if( type == k_ent_gate ){
 467       ent_gate *gate = mdl_arritm( &world->ent_gate, index );
 468       boxf box = {{ -gate->dimensions[0], -gate->dimensions[1], -0.1f },
 469                   {  gate->dimensions[0],  gate->dimensions[1],  0.1f }};
 470
 471       m4x3_expand_aabb_aabb( gate->to_world, bound, box );
 472    }
 473    else if( type == k_ent_objective ){
 474       ent_objective *objective = mdl_arritm( &world->ent_objective, index );
 475
 476       /* TODO: This might be more work than necessary. could maybe just get
 477        *       away with representing them as points */
 478
 479       boxf box;
 480       box_init_inf( box );
 481
 482       for( u32 i=0; i<objective->submesh_count; i++ ){
 483          mdl_submesh *sm = mdl_arritm( &world->meta.submeshs,
 484                                        objective->submesh_start+i );
 485          box_concat( box, sm->bbx );
 486       }
 487
 488       m4x3f transform;
 489       mdl_transform_m4x3( &objective->transform, transform );
 490       m4x3_expand_aabb_aabb( transform, bound, box );
 491    }
 492    else if( type == k_ent_volume ){
 493       ent_volume *volume = mdl_arritm( &world->ent_volume, index );
 494       m4x3_expand_aabb_aabb( volume->to_world, bound,
 495                               (boxf){{-1.0f,-1.0f,-1.0f},{ 1.0f, 1.0f, 1.0f}} );
 496    }
 497    else if( type == k_ent_challenge ){
 498       ent_challenge *challenge = mdl_arritm( &world->ent_challenge, index );
 499
 500       boxf box = {{-1.2f*0.5f,-0.72f*0.5f,-0.01f*0.5f},
 501                   { 1.2f*0.5f, 0.72f*0.5f, 0.01f*0.5f}};
 502       m4x3f transform;
 503       mdl_transform_m4x3( &challenge->transform, transform );
 504       m4x3_expand_aabb_aabb( transform, bound, box );
 505    }
 506    else if( type == k_ent_glider ){
 507       ent_glider *glider = mdl_arritm( &world->ent_glider, index );
 508       m4x3f transform;
 509       mdl_transform_m4x3( &glider->transform, transform );
 510       m4x3_expand_aabb_aabb( transform, bound,
 511                             (boxf){{-1.0f,-1.0f,-1.0f},{ 1.0f, 1.0f, 1.0f}} );
 512    }
 513    else{
 514       vg_fatal_error( "Programming error\n" );
 515    }
 516 }
 517
 518 float entity_bh_centroid( void *user, u32 item_index, int axis )
 519 {
 520    world_instance *world = user;
 521
 522    u32 id    = world->entity_list[ item_index ],
 523        type  = mdl_entity_id_type( id ),
 524        index = mdl_entity_id_id( id );
 525
 526    if( type == k_ent_gate ){
 527       ent_gate *gate = mdl_arritm( &world->ent_gate, index );
 528       return gate->to_world[3][axis];
 529    }
 530    else if( type == k_ent_objective ){
 531       ent_objective *objective = mdl_arritm( &world->ent_objective, index );
 532       return objective->transform.co[axis];
 533    }
 534    else if( type == k_ent_volume ){
 535       ent_volume *volume = mdl_arritm( &world->ent_volume, index );
 536       return volume->transform.co[axis];
 537    }
 538    else if( type == k_ent_challenge ){
 539       ent_challenge *challenge = mdl_arritm( &world->ent_challenge, index );
 540       return challenge->transform.co[axis];
 541    }
 542    else if( type == k_ent_glider ){
 543       ent_glider *glider = mdl_arritm( &world->ent_glider, index );
 544       return glider->transform.co[axis];
 545    }
 546    else {
 547       vg_fatal_error( "Programming error\n" );
 548       return INFINITY;
 549    }
 550 }
 551
 552 void entity_bh_swap( void *user, u32 ia, u32 ib )
 553 {
 554    world_instance *world = user;
 555
 556    u32 a = world->entity_list[ ia ],
 557        b = world->entity_list[ ib ];
 558
 559    world->entity_list[ ia ] = b;
 560    world->entity_list[ ib ] = a;
 561 }
 562
 563 void entity_bh_debug( void *user, u32 item_index ){
 564    world_instance *world = user;
 565
 566    u32 id    = world->entity_list[ item_index ],
 567        type  = mdl_entity_id_type( id ),
 568        index = mdl_entity_id_id( id );
 569
 570    if( type == k_ent_gate ){
 571       ent_gate *gate = mdl_arritm( &world->ent_gate, index );
 572       boxf box = {{ -gate->dimensions[0], -gate->dimensions[1], -0.1f },
 573                   {  gate->dimensions[0],  gate->dimensions[1],  0.1f }};
 574       vg_line_boxf_transformed( gate->to_world, box, 0xf000ff00 );
 575    }
 576    else if( type == k_ent_objective ){
 577       ent_objective *objective = mdl_arritm( &world->ent_objective, index );
 578       boxf box;
 579       box_init_inf( box );
 580
 581       for( u32 i=0; i<objective->submesh_count; i++ ){
 582          mdl_submesh *sm = mdl_arritm( &world->meta.submeshs,
 583                                        objective->submesh_start+i );
 584          box_concat( box, sm->bbx );
 585       }
 586
 587       m4x3f transform;
 588       mdl_transform_m4x3( &objective->transform, transform );
 589       vg_line_boxf_transformed( transform, box, 0xf000ff00 );
 590    }
 591    else if( type == k_ent_volume ){
 592       ent_volume *volume = mdl_arritm( &world->ent_volume, index );
 593       vg_line_boxf_transformed( volume->to_world,
 594                                 (boxf){{-1.0f,-1.0f,-1.0f},{ 1.0f, 1.0f, 1.0f}},
 595                                 0xf000ff00 );
 596    }
 597    else if( type == k_ent_challenge ){
 598       ent_challenge *challenge = mdl_arritm( &world->ent_challenge, index );
 599
 600       boxf box = {{-1.2f*0.5f,-0.72f*0.5f,-0.01f*0.5f},
 601                   { 1.2f*0.5f, 0.72f*0.5f, 0.01f*0.5f}};
 602       m4x3f transform;
 603       mdl_transform_m4x3( &challenge->transform, transform );
 604       vg_line_boxf_transformed( transform, box, 0xf0ff0000 );
 605    }
 606    else{
 607       vg_fatal_error( "Programming error\n" );
 608    }
 609 }
 610
 611 void update_ach_models(void)
 612 {
 613    world_instance *hub = &world_static.instances[k_world_purpose_hub];
 614    if( hub->status != k_world_status_loaded ) return;
 615
 616    for( u32 i=0; i<mdl_arrcount( &hub->ent_prop ); i ++ ){
 617       ent_prop *prop = mdl_arritm( &hub->ent_prop, i );
 618       if( prop->flags & 0x2 ){
 619          if( MDL_CONST_PSTREQ( &hub->meta, prop->pstr_alias, "MARC" ) )
 620             if( skaterift.achievements & 0x1 )
 621                prop->flags &= ~0x1;
 622          if( MDL_CONST_PSTREQ( &hub->meta, prop->pstr_alias, "ALBERT" ) )
 623             if( skaterift.achievements & 0x2 )
 624                prop->flags &= ~0x1;
 625          if( MDL_CONST_PSTREQ( &hub->meta, prop->pstr_alias, "JANET" ) )
 626             if( skaterift.achievements & 0x4 )
 627                prop->flags &= ~0x1;
 628          if( MDL_CONST_PSTREQ( &hub->meta, prop->pstr_alias, "BERNADETTA" ) )
 629             if( skaterift.achievements & 0x8 )
 630                prop->flags &= ~0x1;
 631       }
 632    }
 633 }
 634
 635 void entity_bh_closest( void *user, u32 item_index, v3f point, v3f closest )
 636 {
 637    world_instance *world = user;
 638
 639    u32 id    = world->entity_list[ item_index ],
 640        type  = mdl_entity_id_type( id ),
 641        index = mdl_entity_id_id( id );
 642
 643    if( type == k_ent_gate ){
 644       ent_gate *gate = mdl_arritm( &world->ent_gate, index );
 645       v3_copy( gate->to_world[3], closest );
 646    }
 647    else if( type == k_ent_objective ){
 648       ent_objective *challenge = mdl_arritm( &world->ent_objective, index );
 649       v3_copy( challenge->transform.co, closest );
 650    }
 651    else if( type == k_ent_volume ){
 652       ent_volume *volume = mdl_arritm( &world->ent_volume, index );
 653       v3_copy( volume->to_world[3], closest );
 654    }
 655    else if( type == k_ent_challenge ){
 656       ent_challenge *challenge = mdl_arritm( &world->ent_challenge, index );
 657       v3_copy( challenge->transform.co, closest );
 658    }
 659    else{
 660       vg_fatal_error( "Programming error\n" );
 661    }
 662 }
 663
 664 void world_entity_start( world_instance *world, vg_msg *sav )
 665 {
 666    vg_info( "Start instance %p\n", world );
 667
 668    world->probabilities[ k_probability_curve_constant ] = 1.0f;
 669    for( u32 i=0; i<mdl_arrcount(&world->ent_audio); i++ ){
 670       ent_audio *audio = mdl_arritm(&world->ent_audio,i);
 671       if( audio->flags & AUDIO_FLAG_AUTO_START ){
 672          ent_call call;
 673          call.data = NULL;
 674          call.function = k_ent_function_trigger;
 675          call.id = mdl_entity_id( k_ent_audio, i );
 676          entity_call( world, &call );
 677       }
 678    }
 679
 680    /* read savedata
 681     * ----------------------------------------------------------------------- */
 682
 683    for( u32 i=0; i<mdl_arrcount(&world->ent_challenge); i++ ){
 684       ent_challenge *challenge = mdl_arritm( &world->ent_challenge, i );
 685       const char *alias = mdl_pstr( &world->meta, challenge->pstr_alias );
 686
 687       u32 result;
 688       vg_msg_getkvintg( sav, alias, k_vg_msg_u32, &result );
 689
 690       if( result ){
 691          ent_call call;
 692          call.data = NULL;
 693          call.function = 0;
 694          call.id = mdl_entity_id( k_ent_challenge, i );
 695          entity_call( world, &call );
 696       }
 697    }
 698
 699    vg_msg routes_block = *sav;
 700    if( vg_msg_seekframe( &routes_block, "routes" ) ){
 701       for( u32 i=0; i<mdl_arrcount(&world->ent_route); i++ ){
 702          ent_route *route = mdl_arritm( &world->ent_route, i );
 703
 704          vg_msg route_info = routes_block;
 705          if( vg_msg_seekframe( &route_info,
 706                                mdl_pstr(&world->meta,route->pstr_name) ) ){
 707
 708             u32 flags;
 709             vg_msg_getkvintg( &route_info, "flags", k_vg_msg_u32, &flags );
 710             route->flags |= flags;
 711
 712             vg_msg_getkvintg( &route_info, "best_laptime", k_vg_msg_f64,
 713                               &route->best_laptime );
 714
 715             f32 sections[ route->checkpoints_count ];
 716             vg_msg_cmd cmd;
 717             if( vg_msg_getkvcmd( &route_info, "sections", &cmd ) ){
 718                vg_msg_cast( cmd.value, cmd.code, sections,
 719                             k_vg_msg_f32 |
 720                             vg_msg_count_bits(route->checkpoints_count) );
 721             }
 722             else{
 723                for( u32 j=0; j<route->checkpoints_count; j ++ )
 724                   sections[j] = 0.0f;
 725             }
 726
 727             for( u32 j=0; j<route->checkpoints_count; j ++ ){
 728                ent_checkpoint *cp = mdl_arritm( &world->ent_checkpoint,
 729                      route->checkpoints_start + j );
 730
 731                cp->best_time = sections[j];
 732             }
 733
 734             /* LEGACY: check if steam achievements can give us a medal */
 735             if( steam_ready && steam_stats_ready ){
 736                for( u32 j=0; j<vg_list_size(track_infos); j ++ ){
 737                   struct track_info *inf = &track_infos[j];
 738                   if( !strcmp(inf->name,
 739                               mdl_pstr(&world->meta,route->pstr_name))){
 740
 741                      steamapi_bool set = 0;
 742                      if( SteamAPI_ISteamUserStats_GetAchievement(
 743                               hSteamUserStats, inf->achievement_id, &set ) )
 744                      {
 745                         if( set ){
 746                            route->flags |= k_ent_route_flag_achieve_silver;
 747                         }
 748                      }
 749                   }
 750                }
 751             }
 752          }
 753       }
 754    }
 755
 756    ent_region_re_eval( world );
 757 }
 758
 759 void world_entity_serialize( world_instance *world, vg_msg *sav )
 760 {
 761    for( u32 i=0; i<mdl_arrcount(&world->ent_challenge); i++ ){
 762       ent_challenge *challenge = mdl_arritm(&world->ent_challenge,i);
 763
 764       const char *alias = mdl_pstr(&world->meta,challenge->pstr_alias);
 765       vg_msg_wkvnum( sav, alias, k_vg_msg_u32, 1, &challenge->status );
 766    }
 767
 768    if( mdl_arrcount(&world->ent_route) ){
 769       vg_msg_frame( sav, "routes" );
 770       for( u32 i=0; i<mdl_arrcount(&world->ent_route); i++ ){
 771          ent_route *route = mdl_arritm( &world->ent_route, i );
 772
 773          vg_msg_frame( sav, mdl_pstr( &world->meta, route->pstr_name ) );
 774          {
 775             vg_msg_wkvnum( sav, "flags", k_vg_msg_u32, 1, &route->flags );
 776             vg_msg_wkvnum( sav, "best_laptime",
 777                            k_vg_msg_f64, 1, &route->best_laptime );
 778
 779             f32 sections[ route->checkpoints_count ];
 780
 781             for( u32 j=0; j<route->checkpoints_count; j ++ ){
 782                ent_checkpoint *cp = mdl_arritm( &world->ent_checkpoint,
 783                      route->checkpoints_start + j );
 784
 785                sections[j] = cp->best_time;
 786             }
 787
 788             vg_msg_wkvnum( sav, "sections", k_vg_msg_f32,
 789                            route->checkpoints_count, sections );
 790          }
 791          vg_msg_end_frame( sav );
 792       }
 793       vg_msg_end_frame( sav );
 794    }
 795 }