world_load.c

   1 #ifndef WORLD_LOAD_C
   2 #define WORLD_LOAD_C
   3
   4 #include "world_load.h"
   5 #include "world_routes.h"
   6 #include "world_gate.h"
   7 #include "ent_skateshop.h"
   8 #include "addon.h"
   9 #include "save.h"
  10 #include "vg/vg_msg.h"
  11 #include "network.h"
  12 #include "player_remote.h"
  13
  14 /*
  15  * load the .mdl file located in path as a world instance
  16  */
  17 static void world_instance_load_mdl( u32 instance_id, const char *path ){
  18    vg_rand_seed( 9001 );
  19
  20    world_instance *world = &world_static.instances[ instance_id ];
  21    world_init_blank( world );
  22    world->status = k_world_status_loading;
  23
  24    vg_info( "Loading instance[%u]: %s\n", instance_id, path );
  25
  26    void *allocator = NULL;
  27    if( instance_id == 0 ) allocator = world_static.heap;
  28    else allocator = world_static.instances[instance_id-1].heap;
  29
  30    u32 heap_availible = vg_linear_remaining( allocator );
  31    u32 min_overhead = sizeof(vg_linear_allocator);
  32
  33    if( heap_availible < (min_overhead+1024) ){
  34       vg_fatal_error( "out of memory" );
  35    }
  36
  37    u32 size = heap_availible - min_overhead;
  38    void *heap = vg_create_linear_allocator( allocator, size, VG_MEMORY_SYSTEM );
  39
  40    world->heap = heap;
  41    mdl_context *meta = &world->meta;
  42
  43    mdl_open( meta, path, world->heap );
  44    mdl_load_metadata_block( meta, world->heap );
  45    mdl_load_animation_block( meta, world->heap );
  46    mdl_load_mesh_block( meta, world->heap );
  47
  48    /* TODO: Make this a table? */
  49    mdl_load_array( meta, &world->ent_gate,      "ent_gate",       heap );
  50    mdl_load_array( meta, &world->ent_camera,    "ent_camera",     heap );
  51    mdl_load_array( meta, &world->ent_spawn,     "ent_spawn",      heap );
  52    mdl_load_array( meta, &world->ent_light,     "ent_light",      heap );
  53    mdl_load_array( meta, &world->ent_route_node,"ent_route_node", heap );
  54    mdl_load_array( meta, &world->ent_path_index,"ent_path_index", heap );
  55    mdl_load_array( meta, &world->ent_checkpoint,"ent_checkpoint", heap );
  56    mdl_load_array( meta, &world->ent_route,     "ent_route",      heap );
  57    mdl_load_array( meta, &world->ent_water,     "ent_water",      heap );
  58    mdl_load_array( meta, &world->ent_audio_clip,"ent_audio_clip", heap );
  59    mdl_load_array( meta, &world->ent_audio,     "ent_audio",      heap );
  60    mdl_load_array( meta, &world->ent_volume,    "ent_volume",     heap );
  61    mdl_load_array( meta, &world->ent_traffic,   "ent_traffic",    heap );
  62    mdl_load_array( meta, &world->ent_marker,    "ent_marker",     heap );
  63    mdl_load_array( meta, &world->ent_skateshop, "ent_skateshop",  heap );
  64    mdl_load_array( meta, &world->ent_swspreview,"ent_swspreview", heap );
  65    mdl_load_array( meta, &world->ent_ccmd,      "ent_ccmd",       heap );
  66    mdl_load_array( meta, &world->ent_objective, "ent_objective",  heap );
  67    mdl_load_array( meta, &world->ent_challenge, "ent_challenge",  heap );
  68    mdl_load_array( meta, &world->ent_relay,     "ent_relay",      heap );
  69    mdl_load_array( meta, &world->ent_cubemap,   "ent_cubemap",    heap );
  70    mdl_load_array( meta, &world->ent_miniworld, "ent_miniworld",  heap );
  71    mdl_load_array( meta, &world->ent_prop,      "ent_prop",  heap );
  72
  73    mdl_array_ptr infos;
  74    mdl_load_array( meta, &infos, "ent_worldinfo", vg_mem.scratch );
  75
  76    world->skybox = k_skybox_default;
  77    if( mdl_arrcount(&infos) ){
  78       world->info = *((ent_worldinfo *)mdl_arritm(&infos,0));
  79
  80       if( world->meta.info.version >= 104 ){
  81          if( MDL_CONST_PSTREQ( &world->meta, world->info.pstr_skybox,"space")){
  82             world->skybox = k_skybox_space;
  83          }
  84       }
  85    }
  86    else{
  87       world->info.pstr_author = 0;
  88       world->info.pstr_desc = 0;
  89       world->info.pstr_name = 0;
  90       world->info.timezone = 0.0f;
  91    }
  92
  93    time_t seconds = time(NULL) % ((u32)vg_maxf(1.0f,k_day_length)*60);
  94    world->time  = ((f64)(seconds)/(k_day_length*60.0));
  95    world->time += (world->info.timezone/24.0);
  96
  97    /* process resources from pack */
  98    world_gen_load_surfaces( world );
  99    world_gen_routes_ent_init( world );
 100    world_gen_entities_init( world );
 101
 102    /* main bulk */
 103    world_gen_generate_meshes( world );
 104    world_gen_routes_generate( instance_id );
 105    world_gen_compute_light_indices( world );
 106    mdl_close( meta );
 107
 108    /* init player position.
 109     *   - this is overriden by the save state when(if) it loads */
 110    v3_zero( world->player_angles );
 111    ent_spawn *rp = world_find_spawn_by_name( world, "start" );
 112    if( !rp ) rp = world_find_closest_spawn( world, (v3f){0.0f,0.0f,0.0f} );
 113
 114    /* TODO: fallback to searching for a safe location using raycasts */
 115    assert(rp);
 116    v3_copy( rp->transform.co, world->player_co );
 117
 118    /* allocate leaderboard buffers */
 119    u32 bs = mdl_arrcount(&world->ent_route)*sizeof(struct leaderboard_cache);
 120    world->leaderboard_cache = vg_linear_alloc( heap, bs );
 121
 122    for( u32 i=0; i<mdl_arrcount( &world->ent_route ); i ++ ){
 123       struct leaderboard_cache *board = &world->leaderboard_cache[i];
 124       board->data = vg_linear_alloc( heap, NETWORK_REQUEST_MAX );
 125       board->status = k_request_status_client_error;
 126       board->cache_time = 0.0;
 127       board->data_len = 0;
 128    }
 129
 130    vg_async_call( async_world_postprocess, world, 0 );
 131    vg_async_stall();
 132 }
 133
 134 struct world_load_complete_data{
 135    savedata_file save;
 136    enum world_purpose purpose;
 137 };
 138
 139 static void skaterift_world_load_done( void *payload, u32 size ){
 140    struct world_load_complete_data *data = payload;
 141
 142    /* TODO(W2): Load player position from this save file */
 143    vg_msg sav;
 144    vg_msg_init( &sav, data->save.buf, data->save.len );
 145
 146    world_instance *world = &world_static.instances[ data->purpose ];
 147    world_entity_start( world, &sav );
 148    world->status = k_world_status_loaded;
 149    world_static.load_state = k_world_loader_none;
 150
 151    for( int i=0; i<k_world_max; i ++ ){
 152       world_instance *wi = &world_static.instances[i];
 153
 154       if( wi->status == k_world_status_loaded )
 155          world_entity_relink( wi );
 156    }
 157 }
 158
 159 struct world_load_args {
 160    enum world_purpose purpose;
 161    addon_reg *reg;
 162 };
 163
 164 /*
 165  * Does a complete world switch using the remaining free slots
 166  */
 167 static void skaterift_world_load_thread( void *_args ){
 168    /* FIXME: we need to check all threads that take args. args can dissapear! */
 169    struct world_load_args args = *((struct world_load_args *)_args);
 170
 171    addon_reg *reg = args.reg;
 172    world_static.instance_addons[ args.purpose ] = reg;
 173
 174    char uid[ADDON_UID_MAX];
 175    addon_alias_uid( &reg->alias, uid );
 176    vg_info( "LOAD WORLD %s @%d\n", uid, args.purpose );
 177
 178    char path_buf[4096];
 179    vg_str path;
 180    vg_strnull( &path, path_buf, 4096 );
 181
 182    assert( reg );
 183    addon_get_content_folder( reg, &path );
 184
 185    vg_str folder = path;
 186    if( !vg_strgood( &folder ) ) {
 187       vg_error( "Load target too long\n" );
 188       return;
 189    }
 190
 191    char worlds[k_world_max-1][4096];
 192    u32 i=0;
 193
 194    vg_dir dir;
 195    if( !vg_dir_open(&dir, folder.buffer) ){
 196       vg_error( "opendir('%s') failed\n", folder.buffer );
 197       return;
 198    }
 199
 200    while( vg_dir_next_entry(&dir) ){
 201       if( vg_dir_entry_type(&dir) == k_vg_entry_type_file ){
 202          const char *d_name = vg_dir_entry_name(&dir);
 203          if( d_name[0] == '.' ) continue;
 204
 205          vg_str file = folder;
 206          vg_strcat( &file, "/" );
 207          vg_strcat( &file, d_name );
 208          if( !vg_strgood( &file ) ) continue;
 209
 210          char *ext = vg_strch( &file, '.' );
 211          if( !ext ) continue;
 212          if( strcmp(ext,".mdl") ) continue;
 213
 214          if( i == k_world_max-1 ){
 215             vg_warn( "There are too many .mdl files in the map folder!(3)\n" );
 216             break;
 217          }
 218
 219          strcpy( worlds[i++], file.buffer );
 220       }
 221    }
 222    vg_dir_close(&dir);
 223
 224    if( i == 0 ){
 225       vg_warn( "There are no .mdl files in the map folder.\n" );
 226    }
 227
 228    u32 first_index = 0;
 229    for( u32 j=0; j<i; j++ ){
 230       vg_str name = { .buffer = worlds[j], .i=strlen(worlds[j]),
 231                       sizeof(worlds[j]) };
 232       char *fname = vg_strch( &name, '/' );
 233       if( fname ){
 234          if( !strcmp( fname+1, "main.mdl" ) ){
 235             first_index = j;
 236          }
 237       }
 238    }
 239
 240    world_instance_load_mdl( args.purpose, worlds[first_index] );
 241
 242    vg_async_item *final_call =
 243       vg_async_alloc( sizeof(struct world_load_complete_data) );
 244
 245    struct world_load_complete_data *data = final_call->payload;
 246    data->purpose = args.purpose;
 247
 248    skaterift_world_get_save_path( args.purpose, data->save.path );
 249    savedata_file_read( &data->save );
 250
 251    vg_async_dispatch( final_call, skaterift_world_load_done );
 252    vg_async_stall();
 253 }
 254
 255 /* holding pattern before we can start loading the new world, since we might be
 256  * waiting for audio to stop */
 257 static void skaterift_change_client_world_preupdate(void){
 258    for( u32 i=1; i<k_world_max; i++ ){
 259       world_instance *inst = &world_static.instances[i];
 260
 261       if( inst->status == k_world_status_unloading ){
 262          if( world_freeable( inst ) ){
 263             world_free( inst );
 264          }
 265          return;
 266       }
 267    }
 268
 269    if( vg_loader_availible() ){
 270       vg_info( "worlds cleared, begining load\n" );
 271       world_static.load_state = k_world_loader_load;
 272
 273       vg_linear_clear( vg_async.buffer );
 274       struct world_load_args *args =
 275          vg_linear_alloc( vg_async.buffer, sizeof(struct world_load_args) );
 276       args->purpose = k_world_purpose_client;
 277       args->reg = world_static.instance_addons[ k_world_purpose_client ];
 278
 279       /* this is replaces the already correct reg but we have to set it again
 280        * TOO BAD */
 281
 282       /* finally can start the loader */
 283       vg_loader_start( skaterift_world_load_thread, args );
 284    }
 285 }
 286
 287 /* places all loaded worlds into unloading state */
 288 static void skaterift_change_world_start( addon_reg *reg ){
 289    if( world_static.active_instance != 0 )
 290       vg_error( "Cannot change worlds while in non-root world\n" );
 291    else{
 292       if( world_static.instance_addons[ k_world_purpose_client ] == reg ){
 293          vg_warn( "World is already loaded\n" );
 294          return;
 295       }
 296
 297       char buf[76];
 298       addon_alias_uid( &reg->alias, buf );
 299       vg_info( "switching to: %s\n", buf );
 300       skaterift_autosave(1);
 301
 302       world_static.load_state = k_world_loader_preload;
 303
 304       vg_linear_clear( vg_mem.scratch ); /* ?? */
 305       vg_info( "unloading old worlds\n" );
 306
 307       for( u32 i=1; i<vg_list_size(world_static.instances); i++ ){
 308          world_instance *inst = &world_static.instances[i];
 309
 310          if( inst->status == k_world_status_loaded ){
 311             inst->status = k_world_status_unloading;
 312             world_fadeout_audio( inst );
 313          }
 314       }
 315
 316       world_entity_relink( &world_static.instances[k_world_purpose_hub] );
 317
 318       world_static.instance_addons[ k_world_purpose_client ] = reg;
 319       network_send_item( k_netmsg_playeritem_world1 );
 320       relink_all_remote_player_worlds();
 321    }
 322 }
 323
 324 /* console command for the above function */
 325 static int skaterift_load_world_command( int argc, const char *argv[] ){
 326    if( !vg_loader_availible() ) return 0; /* FIXME */
 327
 328    if( argc == 1 ){
 329       addon_alias q;
 330       addon_uid_to_alias( argv[0], &q );
 331
 332       u32 reg_id = addon_match( &q );
 333       if( reg_id != 0xffffffff ){
 334          addon_reg *reg = get_addon_from_index( k_addon_type_world, reg_id );
 335          skaterift_change_world_start( reg );
 336       }
 337       else {
 338          vg_error( "Addon '%s' is not installed or not found.\n", argv[0] );
 339       }
 340    }
 341    else {
 342       vg_info( "worlds availible to load:\n" );
 343
 344       for( int i=0; i<addon_count(k_addon_type_world); i ++ ){
 345          addon_reg *w = get_addon_from_index( k_addon_type_world, i );
 346
 347          char buf[ADDON_UID_MAX];
 348          addon_alias_uid( &w->alias, buf );
 349          vg_info( "  %s\n", buf );
 350       }
 351    }
 352
 353    return 0;
 354 }
 355
 356 /*
 357  * checks:
 358  *  1. to see if all audios owned by the world have been stopped
 359  *  2. that this is the least significant world
 360  */
 361 static int world_freeable( world_instance *world ){
 362    if( world->status != k_world_status_unloading ) return 0;
 363    u8 world_id = (world - world_static.instances) + 1;
 364
 365    for( u32 i=world_id; i<vg_list_size(world_static.instances); i++ ){
 366       if( world_static.instances[i].status != k_world_status_unloaded ){
 367          return 0;
 368       }
 369    }
 370
 371    int freeable = 1;
 372    audio_lock();
 373    for( u32 i=0; i<AUDIO_CHANNELS; i++ ){
 374       audio_channel *ch = &vg_audio.channels[i];
 375
 376       if( ch->allocated && (ch->world_id == world_id)){
 377          if( !audio_channel_finished( ch ) ){
 378             freeable = 0;
 379             break;
 380          }
 381       }
 382    }
 383    audio_unlock();
 384    return freeable;
 385 }
 386
 387 /*
 388  * Free all resources for world instance
 389  */
 390 static void world_free( world_instance *world ){
 391    vg_info( "Free world @%p\n", world );
 392
 393    /* free meshes */
 394    mesh_free( &world->mesh_route_lines );
 395    mesh_free( &world->mesh_geo );
 396    mesh_free( &world->mesh_no_collide );
 397    mesh_free( &world->mesh_water );
 398
 399    /* glDeleteBuffers silently ignores 0's and names that do not correspond to
 400     * existing buffer objects.
 401     * */
 402    glDeleteBuffers( 1, &world->tbo_light_entities );
 403    glDeleteTextures( 1, &world->tex_light_entities );
 404    glDeleteTextures( 1, &world->tex_light_cubes );
 405
 406    /* delete textures and meshes */
 407    glDeleteTextures( world->texture_count, world->textures );
 408
 409    u32 world_index = world - world_static.instances;
 410    if( world_index ){
 411       vg_linear_del( world_static.instances[world_index-1].heap,
 412                      vg_linear_header(world->heap) );
 413    }
 414
 415    for( u32 i=0; i<mdl_arrcount(&world->ent_cubemap); i++ ){
 416       ent_cubemap *cm = mdl_arritm(&world->ent_cubemap,i);
 417       glDeleteTextures( 1, &cm->texture_id );
 418       glDeleteFramebuffers( 1, &cm->framebuffer_id );
 419       glDeleteRenderbuffers( 1, &cm->renderbuffer_id );
 420    }
 421
 422    world->status = k_world_status_unloaded;
 423 }
 424
 425 /*
 426  * reset the world structure without deallocating persistent buffers
 427  * TODO: Make this a memset(0), and have persistent items live in a static loc
 428  */
 429 static void world_init_blank( world_instance *world ){
 430    memset( &world->meta, 0, sizeof(mdl_context) );
 431
 432    world->textures = NULL;
 433    world->texture_count = 0;
 434    world->surfaces = NULL;
 435    world->surface_count = 0;
 436
 437    world->geo_bh = NULL;
 438    world->entity_bh = NULL;
 439    world->entity_list = NULL;
 440    world->rendering_gate = NULL;
 441
 442    world->water.enabled = 0;
 443    world->time = 0.0;
 444
 445    /* default lighting conditions
 446     * -------------------------------------------------------------*/
 447    struct ub_world_lighting *state = &world->ub_lighting;
 448
 449    state->g_light_preview = 0;
 450    state->g_shadow_samples = 8;
 451    state->g_water_fog = 0.04f;
 452
 453    v4_zero( state->g_water_plane );
 454    v4_zero( state->g_depth_bounds );
 455
 456    state->g_shadow_length = 9.50f;
 457    state->g_shadow_spread = 0.65f;
 458
 459    v3_copy( (v3f){0.37f, 0.54f, 0.97f}, state->g_daysky_colour );
 460    v3_copy( (v3f){0.03f, 0.05f, 0.20f}, state->g_nightsky_colour );
 461    v3_copy( (v3f){1.00f, 0.32f, 0.01f}, state->g_sunset_colour );
 462    v3_copy( (v3f){0.13f, 0.17f, 0.35f}, state->g_ambient_colour );
 463    v3_copy( (v3f){0.25f, 0.17f, 0.51f}, state->g_sunset_ambient );
 464    v3_copy( (v3f){1.10f, 0.89f, 0.35f}, state->g_sun_colour );
 465 }
 466
 467 #endif /* WORLD_LOAD_C */