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    ent_spawn *rp = world_find_spawn_by_name( world, "start" );
 111    if( !rp ) rp = world_find_closest_spawn( world, (v3f){0.0f,0.0f,0.0f} );
 112
 113    /* TODO: fallback to searching for a safe location using raycasts */
 114    assert(rp);
 115    v3_copy( rp->transform.co, world->player_co );
 116
 117    /* allocate leaderboard buffers */
 118    u32 bs = mdl_arrcount(&world->ent_route)*sizeof(struct leaderboard_cache);
 119    world->leaderboard_cache = vg_linear_alloc( heap, bs );
 120
 121    for( u32 i=0; i<mdl_arrcount( &world->ent_route ); i ++ ){
 122       struct leaderboard_cache *board = &world->leaderboard_cache[i];
 123       board->data = vg_linear_alloc( heap, NETWORK_REQUEST_MAX );
 124       board->status = k_request_status_client_error;
 125       board->cache_time = 0.0;
 126       board->data_len = 0;
 127    }
 128
 129    vg_async_call( async_world_postprocess, world, 0 );
 130    vg_async_stall();
 131 }
 132
 133 struct world_load_complete_data{
 134    savedata_file save;
 135    enum world_purpose purpose;
 136 };
 137
 138 static void skaterift_world_load_done( void *payload, u32 size ){
 139    struct world_load_complete_data *data = payload;
 140
 141    /* TODO(W2): Load player position from this save file */
 142    vg_msg sav;
 143    vg_msg_init( &sav, data->save.buf, data->save.len );
 144
 145    world_instance *world = &world_static.instances[ data->purpose ];
 146    world_entity_start( world, &sav );
 147    world->status = k_world_status_loaded;
 148    world_static.load_state = k_world_loader_none;
 149 }
 150
 151 struct world_load_args {
 152    enum world_purpose purpose;
 153    addon_reg *reg;
 154 };
 155
 156 /*
 157  * Does a complete world switch using the remaining free slots
 158  */
 159 static void skaterift_world_load_thread( void *_args ){
 160    /* FIXME: we need to check all threads that take args. args can dissapear! */
 161    struct world_load_args args = *((struct world_load_args *)_args);
 162
 163    addon_reg *reg = args.reg;
 164    world_static.instance_addons[ args.purpose ] = reg;
 165
 166    char uid[ADDON_UID_MAX];
 167    addon_alias_uid( &reg->alias, uid );
 168    vg_info( "LOAD WORLD %s @%d\n", uid, args.purpose );
 169
 170    char path_buf[4096];
 171    vg_str path;
 172    vg_strnull( &path, path_buf, 4096 );
 173
 174    assert( reg );
 175    addon_get_content_folder( reg, &path );
 176
 177    vg_str folder = path;
 178    if( !vg_strgood( &folder ) ) {
 179       vg_error( "Load target too long\n" );
 180       return;
 181    }
 182
 183    char worlds[k_world_max-1][4096];
 184    u32 i=0;
 185
 186    vg_dir dir;
 187    if( !vg_dir_open(&dir, folder.buffer) ){
 188       vg_error( "opendir('%s') failed\n", folder.buffer );
 189       return;
 190    }
 191
 192    while( vg_dir_next_entry(&dir) ){
 193       if( vg_dir_entry_type(&dir) == k_vg_entry_type_file ){
 194          const char *d_name = vg_dir_entry_name(&dir);
 195          if( d_name[0] == '.' ) continue;
 196
 197          vg_str file = folder;
 198          vg_strcat( &file, "/" );
 199          vg_strcat( &file, d_name );
 200          if( !vg_strgood( &file ) ) continue;
 201
 202          char *ext = vg_strch( &file, '.' );
 203          if( !ext ) continue;
 204          if( strcmp(ext,".mdl") ) continue;
 205
 206          if( i == k_world_max-1 ){
 207             vg_warn( "There are too many .mdl files in the map folder!(3)\n" );
 208             break;
 209          }
 210
 211          strcpy( worlds[i++], file.buffer );
 212       }
 213    }
 214    vg_dir_close(&dir);
 215
 216    if( i == 0 ){
 217       vg_warn( "There are no .mdl files in the map folder.\n" );
 218    }
 219
 220    u32 first_index = 0;
 221    for( u32 j=0; j<i; j++ ){
 222       vg_str name = { .buffer = worlds[j], .i=strlen(worlds[j]),
 223                       sizeof(worlds[j]) };
 224       char *fname = vg_strch( &name, '/' );
 225       if( fname ){
 226          if( !strcmp( fname+1, "main.mdl" ) ){
 227             first_index = j;
 228          }
 229       }
 230    }
 231
 232    world_instance_load_mdl( args.purpose, worlds[first_index] );
 233
 234    vg_async_item *final_call =
 235       vg_async_alloc( sizeof(struct world_load_complete_data) );
 236
 237    struct world_load_complete_data *data = final_call->payload;
 238    data->purpose = args.purpose;
 239
 240    skaterift_world_get_save_path( args.purpose, data->save.path );
 241    savedata_file_read( &data->save );
 242
 243    vg_async_dispatch( final_call, skaterift_world_load_done );
 244    vg_async_stall();
 245 }
 246
 247 /* holding pattern before we can start loading the new world, since we might be
 248  * waiting for audio to stop */
 249 static void skaterift_change_client_world_preupdate(void){
 250    for( u32 i=1; i<k_world_max; i++ ){
 251       world_instance *inst = &world_static.instances[i];
 252
 253       if( inst->status == k_world_status_unloading ){
 254          if( world_freeable( inst ) ){
 255             world_free( inst );
 256          }
 257          return;
 258       }
 259    }
 260
 261    if( vg_loader_availible() ){
 262       vg_info( "worlds cleared, begining load\n" );
 263       world_static.load_state = k_world_loader_load;
 264
 265       vg_linear_clear( vg_async.buffer );
 266       struct world_load_args *args =
 267          vg_linear_alloc( vg_async.buffer, sizeof(struct world_load_args) );
 268       args->purpose = k_world_purpose_client;
 269       args->reg = world_static.instance_addons[ k_world_purpose_client ];
 270
 271       /* this is replaces the already correct reg but we have to set it again
 272        * TOO BAD */
 273
 274       /* finally can start the loader */
 275       vg_loader_start( skaterift_world_load_thread, args );
 276    }
 277 }
 278
 279 /* places all loaded worlds into unloading state */
 280 static void skaterift_change_world_start( addon_reg *reg ){
 281    if( world_static.active_instance != 0 )
 282       vg_error( "Cannot change worlds while in non-root world\n" );
 283    else{
 284       if( world_static.instance_addons[ k_world_purpose_client ] == reg ){
 285          vg_warn( "World is already loaded\n" );
 286          return;
 287       }
 288
 289       char buf[76];
 290       addon_alias_uid( &reg->alias, buf );
 291       vg_info( "switching to: %s\n", buf );
 292       skaterift_autosave(1);
 293
 294       world_static.load_state = k_world_loader_preload;
 295
 296       vg_linear_clear( vg_mem.scratch ); /* ?? */
 297       vg_info( "unloading old worlds\n" );
 298
 299       for( u32 i=1; i<vg_list_size(world_static.instances); i++ ){
 300          world_instance *inst = &world_static.instances[i];
 301
 302          if( inst->status == k_world_status_loaded ){
 303             inst->status = k_world_status_unloading;
 304             world_fadeout_audio( inst );
 305          }
 306       }
 307
 308       world_static.instance_addons[ k_world_purpose_client ] = reg;
 309       network_send_item( k_netmsg_playeritem_world1 );
 310       relink_all_remote_player_worlds();
 311    }
 312 }
 313
 314 /* console command for the above function */
 315 static int skaterift_load_world_command( int argc, const char *argv[] ){
 316    if( !vg_loader_availible() ) return 0; /* FIXME */
 317
 318    if( argc == 1 ){
 319       addon_alias q;
 320       addon_uid_to_alias( argv[0], &q );
 321
 322       u32 reg_id = addon_match( &q );
 323       if( reg_id != 0xffffffff ){
 324          addon_reg *reg = get_addon_from_index( k_addon_type_world, reg_id );
 325          skaterift_change_world_start( reg );
 326       }
 327       else {
 328          vg_error( "Addon '%s' is not installed or not found.\n", argv[0] );
 329       }
 330    }
 331    else {
 332       vg_info( "worlds availible to load:\n" );
 333
 334       for( int i=0; i<addon_count(k_addon_type_world); i ++ ){
 335          addon_reg *w = get_addon_from_index( k_addon_type_world, i );
 336
 337          char buf[ADDON_UID_MAX];
 338          addon_alias_uid( &w->alias, buf );
 339          vg_info( "  %s\n", buf );
 340       }
 341    }
 342
 343    return 0;
 344 }
 345
 346 /*
 347  * checks:
 348  *  1. to see if all audios owned by the world have been stopped
 349  *  2. that this is the least significant world
 350  */
 351 static int world_freeable( world_instance *world ){
 352    if( world->status != k_world_status_unloading ) return 0;
 353    u8 world_id = (world - world_static.instances) + 1;
 354
 355    for( u32 i=world_id; i<vg_list_size(world_static.instances); i++ ){
 356       if( world_static.instances[i].status != k_world_status_unloaded ){
 357          return 0;
 358       }
 359    }
 360
 361    int freeable = 1;
 362    audio_lock();
 363    for( u32 i=0; i<AUDIO_CHANNELS; i++ ){
 364       audio_channel *ch = &vg_audio.channels[i];
 365
 366       if( ch->allocated && (ch->world_id == world_id)){
 367          if( !audio_channel_finished( ch ) ){
 368             freeable = 0;
 369             break;
 370          }
 371       }
 372    }
 373    audio_unlock();
 374    return freeable;
 375 }
 376
 377 /*
 378  * Free all resources for world instance
 379  */
 380 static void world_free( world_instance *world ){
 381    vg_info( "Free world @%p\n", world );
 382
 383    /* free meshes */
 384    mesh_free( &world->mesh_route_lines );
 385    mesh_free( &world->mesh_geo );
 386    mesh_free( &world->mesh_no_collide );
 387    mesh_free( &world->mesh_water );
 388
 389    /* glDeleteBuffers silently ignores 0's and names that do not correspond to
 390     * existing buffer objects.
 391     * */
 392    glDeleteBuffers( 1, &world->tbo_light_entities );
 393    glDeleteTextures( 1, &world->tex_light_entities );
 394    glDeleteTextures( 1, &world->tex_light_cubes );
 395
 396    /* delete textures and meshes */
 397    glDeleteTextures( world->texture_count, world->textures );
 398
 399    u32 world_index = world - world_static.instances;
 400    if( world_index ){
 401       vg_linear_del( world_static.instances[world_index-1].heap,
 402                      vg_linear_header(world->heap) );
 403    }
 404
 405    for( u32 i=0; i<mdl_arrcount(&world->ent_cubemap); i++ ){
 406       ent_cubemap *cm = mdl_arritm(&world->ent_cubemap,i);
 407       glDeleteTextures( 1, &cm->texture_id );
 408       glDeleteFramebuffers( 1, &cm->framebuffer_id );
 409       glDeleteRenderbuffers( 1, &cm->renderbuffer_id );
 410    }
 411
 412    world->status = k_world_status_unloaded;
 413 }
 414
 415 /*
 416  * reset the world structure without deallocating persistent buffers
 417  * TODO: Make this a memset(0), and have persistent items live in a static loc
 418  */
 419 static void world_init_blank( world_instance *world ){
 420    memset( &world->meta, 0, sizeof(mdl_context) );
 421
 422    world->textures = NULL;
 423    world->texture_count = 0;
 424    world->surfaces = NULL;
 425    world->surface_count = 0;
 426
 427    world->geo_bh = NULL;
 428    world->entity_bh = NULL;
 429    world->entity_list = NULL;
 430    world->rendering_gate = NULL;
 431
 432    world->water.enabled = 0;
 433    world->time = 0.0;
 434
 435    /* default lighting conditions
 436     * -------------------------------------------------------------*/
 437    struct ub_world_lighting *state = &world->ub_lighting;
 438
 439    state->g_light_preview = 0;
 440    state->g_shadow_samples = 8;
 441    state->g_water_fog = 0.04f;
 442
 443    v4_zero( state->g_water_plane );
 444    v4_zero( state->g_depth_bounds );
 445
 446    state->g_shadow_length = 9.50f;
 447    state->g_shadow_spread = 0.65f;
 448
 449    v3_copy( (v3f){0.37f, 0.54f, 0.97f}, state->g_daysky_colour );
 450    v3_copy( (v3f){0.03f, 0.05f, 0.20f}, state->g_nightsky_colour );
 451    v3_copy( (v3f){1.00f, 0.32f, 0.01f}, state->g_sunset_colour );
 452    v3_copy( (v3f){0.13f, 0.17f, 0.35f}, state->g_ambient_colour );
 453    v3_copy( (v3f){0.25f, 0.17f, 0.51f}, state->g_sunset_ambient );
 454    v3_copy( (v3f){1.10f, 0.89f, 0.35f}, state->g_sun_colour );
 455 }
 456
 457 #endif /* WORLD_LOAD_C */