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
   9 /*
  10  * load the .mdl file located in path (relative to exe), it will load into the
  11  * slot specified by world_loader.world_index
  12  */
  13 VG_STATIC void world_load_mdl( const char *path )
  14 {
  15    vg_rand_seed( 9001 );
  16
  17    world_instance *world = world_loading_instance();
  18    world_init_blank( world );
  19    world->status = k_world_status_loading;
  20
  21    vg_info( "Loading world: %s\n", path );
  22
  23    void *allocator = NULL;
  24    if( world_loader.world_index == 0 ) allocator = world_static.heap;
  25    else allocator = world_static.worlds[world_loader.world_index-1].heap;
  26
  27    u32 heap_availible = vg_linear_remaining( allocator );
  28    u32 min_overhead = sizeof(vg_linear_allocator);
  29
  30    if( heap_availible < (min_overhead+1024) ){
  31       vg_fatal_error( "out of memory" );
  32    }
  33
  34    u32 size = heap_availible - min_overhead;
  35    void *heap = vg_create_linear_allocator( allocator, size, VG_MEMORY_SYSTEM );
  36
  37    world->heap = heap;
  38    mdl_context *meta = &world->meta;
  39
  40    mdl_open( meta, path, world->heap );
  41    mdl_load_metadata_block( meta, world->heap );
  42    mdl_load_animation_block( meta, world->heap );
  43    mdl_load_mesh_block( meta, world->heap );
  44
  45    mdl_load_array( meta, &world->ent_gate,      "ent_gate",       heap );
  46    mdl_load_array( meta, &world->ent_camera,    "ent_camera",     heap );
  47    mdl_load_array( meta, &world->ent_spawn,     "ent_spawn",      heap );
  48    mdl_load_array( meta, &world->ent_light,     "ent_light",      heap );
  49    mdl_load_array( meta, &world->ent_route_node,"ent_route_node", heap );
  50    mdl_load_array( meta, &world->ent_path_index,"ent_path_index", heap );
  51    mdl_load_array( meta, &world->ent_checkpoint,"ent_checkpoint", heap );
  52    mdl_load_array( meta, &world->ent_route,     "ent_route",      heap );
  53    mdl_load_array( meta, &world->ent_water,     "ent_water",      heap );
  54    mdl_load_array( meta, &world->ent_audio_clip,"ent_audio_clip", heap );
  55    mdl_load_array( meta, &world->ent_audio,     "ent_audio",      heap );
  56    mdl_load_array( meta, &world->ent_volume,    "ent_volume",     heap );
  57    mdl_load_array( meta, &world->ent_traffic,   "ent_traffic",    heap );
  58    mdl_load_array( meta, &world->ent_marker,    "ent_marker",     heap );
  59    mdl_load_array( meta, &world->ent_skateshop, "ent_skateshop",  heap );
  60    mdl_load_array( meta, &world->ent_swspreview,"ent_swspreview", heap );
  61    mdl_load_array( meta, &world->ent_ccmd,      "ent_ccmd",       heap );
  62
  63    mdl_array_ptr infos;
  64    mdl_load_array( meta, &infos, "ent_worldinfo", vg_mem.scratch );
  65
  66    if( mdl_arrcount(&infos) ){
  67       world->info = *((ent_worldinfo *)mdl_arritm(&infos,0));
  68    }
  69    else{
  70       world->info.pstr_author = 0;
  71       world->info.pstr_desc = 0;
  72       world->info.pstr_name = 0;
  73       world->info.timezone = 0.0f;
  74    }
  75
  76    time_t t;
  77    struct tm *tm;
  78    time( &t );
  79    tm = gmtime( &t );
  80    world->time = (float)tm->tm_min/20.0f + (world->info.timezone/24.0f);
  81
  82    /* process resources from pack */
  83    world_gen_load_surfaces();
  84    world_gen_routes_ent_init();
  85    world_gen_entities_init();
  86    world->volume_bh = bh_create( heap, &bh_system_volumes, world,
  87                                  mdl_arrcount( &world->ent_volume ), 1 );
  88
  89    /* main bulk */
  90    world_gen_generate_meshes();
  91    world_gen_routes_generate();
  92    world_gen_compute_light_indices();
  93    vg_async_call( async_world_postprocess_render, NULL, 0 );
  94    vg_async_stall();
  95
  96    mdl_close( meta );
  97    world->status = k_world_status_loaded;
  98 }
  99
 100 static void skaterift_world_change_done( void *payload, u32 size ){
 101    world_loader.state = k_world_loader_none;
 102 }
 103
 104 /*
 105  * Does a complete world switch using the remaining free slots
 106  */
 107 static void skaterift_world_changer_thread( void *_ ){
 108    char path_buf[4096];
 109    vg_str path;
 110    vg_strnull( &path, path_buf, 4096 );
 111
 112    if( world_loader.reg ){
 113       addon_get_content_folder( world_loader.reg, &path );
 114    }
 115    else {
 116       vg_strcat( &path, "maps/" );
 117       vg_strcat( &path, world_loader.override_name );
 118    }
 119
 120    vg_str folder = path;
 121    if( !vg_strgood( &folder ) ) {
 122       vg_error( "Load target too long\n" );
 123       return;
 124    }
 125
 126    char worlds[3][4096];
 127    u32 i=0;
 128
 129    vg_dir dir;
 130    if( !vg_dir_open(&dir, folder.buffer) ){
 131       vg_error( "opendir('%s') failed\n", folder.buffer );
 132       return;
 133    }
 134
 135    while( vg_dir_next_entry(&dir) ){
 136       if( vg_dir_entry_type(&dir) == k_vg_entry_type_file ){
 137          const char *d_name = vg_dir_entry_name(&dir);
 138          if( d_name[0] == '.' ) continue;
 139
 140          vg_str file = folder;
 141          vg_strcat( &file, "/" );
 142          vg_strcat( &file, d_name );
 143          if( !vg_strgood( &file ) ) continue;
 144
 145          char *ext = vg_strch( &file, '.' );
 146          if( !ext ) continue;
 147          if( strcmp(ext,".mdl") ) continue;
 148
 149          if( i == 3 ){
 150             vg_warn( "There are too many .mdl files in the map folder!(3)\n" );
 151             break;
 152          }
 153
 154          strcpy( worlds[i++], file.buffer );
 155       }
 156    }
 157    vg_dir_close(&dir);
 158
 159    if( i == 0 ){
 160       vg_warn( "There are no .mdl files in the map folder.\n" );
 161    }
 162
 163    u32 first_index = 0;
 164    for( u32 j=0; j<i; j++ ){
 165       vg_str name = { .buffer = worlds[j], .i=strlen(worlds[j]),
 166                       sizeof(worlds[j]) };
 167       char *fname = vg_strch( &name, '/' );
 168       if( fname ){
 169          if( !strcmp( fname+1, "main.mdl" ) ){
 170             first_index = j;
 171          }
 172       }
 173    }
 174
 175    world_loader.generate_point_cloud = 1;
 176    world_loader.world_index = 1;
 177    world_load_mdl( worlds[first_index] );
 178
 179    world_loader.generate_point_cloud = 0;
 180    for( u32 j=0; j<i; j++ ){
 181       if( j != first_index ){
 182          world_loader.world_index = j+1;
 183          world_load_mdl( worlds[j] );
 184       }
 185    }
 186
 187    vg_async_call( skaterift_world_change_done, NULL, 0 );
 188 }
 189
 190 /* holding pattern before we can start loading the new world, since we might be
 191  * waiting for audio to stop */
 192 static void skaterift_change_world_preupdate(void){
 193    for( u32 i=1; i<vg_list_size(world_static.worlds); i++ ){
 194       world_instance *inst = &world_static.worlds[i];
 195
 196       if( inst->status == k_world_status_unloading ){
 197          if( world_freeable( inst ) ){
 198             world_free( inst );
 199          }
 200          return;
 201       }
 202    }
 203
 204    vg_info( "worlds cleared, begining load\n" );
 205    world_loader.state = k_world_loader_load;
 206
 207    /* finally can start the loader */
 208    vg_loader_start( skaterift_world_changer_thread, NULL );
 209 }
 210
 211 /* places all loaded worlds into unloading state */
 212 static void skaterift_change_world_start(void){
 213    if( world_loader.reg ){
 214       vg_info( "switching to %s ("PRINTF_U64"\n",
 215                world_loader.reg->alias.foldername,
 216                world_loader.reg->alias.workshop_id );
 217    }
 218    else{
 219       vg_info( "switching to %s(local)\n", world_loader.override_name );
 220    }
 221
 222    if( world_static.active_world != 0 ){
 223       vg_error( "Cannot change worlds while in non-root world\n" );
 224    }
 225    else{
 226       world_loader.state = k_world_loader_preload;
 227
 228       vg_linear_clear( vg_mem.scratch ); /* ?? */
 229       vg_info( "unloading old worlds\n" );
 230       world_unlink_nonlocal( &world_static.worlds[0] );
 231
 232       for( u32 i=1; i<vg_list_size(world_static.worlds); i++ ){
 233          world_instance *inst = &world_static.worlds[i];
 234
 235          if( inst->status == k_world_status_loaded ){
 236             inst->status = k_world_status_unloading;
 237             world_fadeout_audio( inst );
 238          }
 239       }
 240    }
 241 }
 242
 243 /* console command for the above function */
 244 static int skaterift_change_world_command( int argc, const char *argv[] )
 245 {
 246    if( argc == 1 ){
 247       world_loader.reg = NULL;
 248       vg_strncpy( argv[0], world_loader.override_name,
 249                   vg_list_size( world_loader.override_name ),
 250                   k_strncpy_always_add_null );
 251       skaterift_change_world_start();
 252    }
 253
 254    return 0;
 255 }
 256
 257
 258 static world_instance *world_loading_instance(void){
 259    return &world_static.worlds[ world_loader.world_index ];
 260 }
 261
 262 /*
 263  * checks:
 264  *  1. to see if all audios owned by the world have been stopped
 265  *  2. that this is the least significant world
 266  */
 267 static int world_freeable( world_instance *world )
 268 {
 269    if( world->status != k_world_status_unloading ) return 0;
 270    u8 world_id = (world - world_static.worlds) + 1;
 271
 272    for( u32 i=world_id; i<vg_list_size(world_static.worlds); i++ ){
 273       if( world_static.worlds[i].status != k_world_status_unloaded ){
 274          return 0;
 275       }
 276    }
 277
 278    int freeable = 1;
 279    audio_lock();
 280    for( u32 i=0; i<AUDIO_CHANNELS; i++ ){
 281       audio_channel *ch = &vg_audio.channels[i];
 282
 283       if( ch->allocated && (ch->world_id == world_id)){
 284          if( !audio_channel_finished( ch ) ){
 285             freeable = 0;
 286             break;
 287          }
 288       }
 289    }
 290    audio_unlock();
 291    return freeable;
 292 }
 293
 294 /*
 295  * Free all resources for world instance
 296  */
 297 static void world_free( world_instance *world )
 298 {
 299    vg_info( "Free world @%p\n", world );
 300
 301    /* free meshes */
 302    mesh_free( &world->mesh_route_lines );
 303    mesh_free( &world->mesh_geo );
 304    mesh_free( &world->mesh_no_collide );
 305    mesh_free( &world->mesh_water );
 306
 307    /* glDeleteBuffers silently ignores 0's and names that do not correspond to
 308     * existing buffer objects.
 309     * */
 310    glDeleteBuffers( 1, &world->tbo_light_entities );
 311    glDeleteTextures( 1, &world->tex_light_entities );
 312    glDeleteTextures( 1, &world->tex_light_cubes );
 313
 314    /* delete textures and meshes */
 315    glDeleteTextures( world->texture_count, world->textures );
 316
 317    u32 world_index = world - world_static.worlds;
 318    if( world_index ){
 319       vg_linear_del( world_static.worlds[world_index-1].heap,
 320                      vg_linear_header(world->heap) );
 321    }
 322
 323    world->status = k_world_status_unloaded;
 324 }
 325
 326 /*
 327  * reset the world structure without deallocating persistent buffers
 328  * TODO: Make this a memset(0), and have persistent items live in a static loc
 329  */
 330 VG_STATIC void world_init_blank( world_instance *world )
 331 {
 332    memset( &world->meta, 0, sizeof(mdl_context) );
 333
 334    world->textures = NULL;
 335    world->texture_count = 0;
 336    world->surfaces = NULL;
 337    world->surface_count = 0;
 338
 339    world->geo_bh = NULL;
 340    world->volume_bh = NULL;
 341    world->audio_bh = NULL;
 342    world->rendering_gate = NULL;
 343
 344    world->water.enabled = 0;
 345    world->time = 0.0;
 346
 347    /* default lighting conditions
 348     * -------------------------------------------------------------*/
 349    struct ub_world_lighting *state = &world->ub_lighting;
 350
 351    state->g_light_preview = 0;
 352    state->g_shadow_samples = 8;
 353    state->g_water_fog = 0.04f;
 354
 355    v4_zero( state->g_water_plane );
 356    v4_zero( state->g_depth_bounds );
 357
 358    state->g_shadow_length = 9.50f;
 359    state->g_shadow_spread = 0.65f;
 360
 361    v3_copy( (v3f){0.37f, 0.54f, 0.97f}, state->g_daysky_colour );
 362    v3_copy( (v3f){0.03f, 0.05f, 0.20f}, state->g_nightsky_colour );
 363    v3_copy( (v3f){1.00f, 0.32f, 0.01f}, state->g_sunset_colour );
 364    v3_copy( (v3f){0.13f, 0.17f, 0.35f}, state->g_ambient_colour );
 365    v3_copy( (v3f){0.25f, 0.17f, 0.51f}, state->g_sunset_ambient );
 366    v3_copy( (v3f){1.10f, 0.89f, 0.35f}, state->g_sun_colour );
 367 }
 368
 369
 370
 371 #endif /* WORLD_LOAD_C */