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 /*
 101  * op: k_async_op_world_loading
 102  *     k_async_op_world_preloading
 103  * -----------------------------------------------------------------------------
 104  */
 105
 106 static void async_skaterift_world_loaded( void *payload, u32 size )
 107 {
 108    skaterift_end_op();
 109 }
 110
 111 /*
 112  * Does a complete world switch using the remaining free slots
 113  */
 114 static void skaterift_world_changer_thread( void *data )
 115 {
 116    if( world_loader.location == k_world_load_type_workshop ){
 117       vg_fatal_error( "Unimplemented\n" );
 118    }
 119
 120    char path_buf[4096];
 121    vg_str path;
 122    vg_strnull( &path, path_buf, 4096 );
 123    vg_strcat( &path, "maps/" );
 124
 125    vg_str folder = path;
 126    vg_strcat( &folder, world_loader.name );
 127    if( !vg_strgood( &folder ) ) {
 128       vg_error( "Load target too long\n" );
 129       vg_async_call( workshop_async_any_complete, NULL, 0 );
 130       return;
 131    }
 132
 133    char worlds[3][4096];
 134    u32 i=0;
 135
 136    vg_dir dir;
 137    if( !vg_dir_open(&dir, folder.buffer) ){
 138       vg_error( "opendir('%s') failed\n", folder.buffer );
 139       vg_async_call( async_skaterift_world_loaded, NULL, 0 );
 140       return;
 141    }
 142
 143    while( vg_dir_next_entry(&dir) ){
 144       if( vg_dir_entry_type(&dir) == k_vg_entry_type_file ){
 145          const char *d_name = vg_dir_entry_name(&dir);
 146          if( d_name[0] == '.' ) continue;
 147
 148          vg_str file = folder;
 149          vg_strcat( &file, "/" );
 150          vg_strcat( &file, d_name );
 151          if( !vg_strgood( &file ) ) continue;
 152
 153          char *ext = vg_strch( &file, '.' );
 154          if( !ext ) continue;
 155          if( strcmp(ext,".mdl") ) continue;
 156
 157          if( i == 3 ){
 158             vg_warn( "There are too many .mdl files in the map folder!(3)\n" );
 159             break;
 160          }
 161
 162          strcpy( worlds[i++], file.buffer );
 163       }
 164    }
 165    vg_dir_close(&dir);
 166
 167    if( i == 0 ){
 168       vg_warn( "There are no .mdl files in the map folder.\n" );
 169    }
 170
 171    u32 first_index = 0;
 172    for( u32 j=0; j<i; j++ ){
 173       vg_str name = { .buffer = worlds[j], .i=strlen(worlds[j]),
 174                       sizeof(worlds[j]) };
 175       char *fname = vg_strch( &name, '/' );
 176       if( fname ){
 177          if( !strcmp( fname+1, "main.mdl" ) ){
 178             first_index = j;
 179          }
 180       }
 181    }
 182
 183    world_loader.generate_point_cloud = 1;
 184    world_loader.world_index = 1;
 185    world_load_mdl( worlds[first_index] );
 186
 187    world_loader.generate_point_cloud = 0;
 188    for( u32 j=0; j<i; j++ ){
 189       if( j != first_index ){
 190          world_loader.world_index = j+1;
 191          world_load_mdl( worlds[j] );
 192       }
 193    }
 194
 195    vg_async_call( async_skaterift_world_loaded, NULL, 0 );
 196 }
 197
 198 /* holding pattern before we can start loading the new world, since we might be
 199  * waiting for audio to stop */
 200 static void skaterift_change_world_preupdate(void)
 201 {
 202    for( u32 i=1; i<vg_list_size(world_static.worlds); i++ ){
 203       world_instance *inst = &world_static.worlds[i];
 204
 205       if( inst->status == k_world_status_unloading ){
 206          if( world_freeable( inst ) ){
 207             world_free( inst );
 208          }
 209          return;
 210       }
 211    }
 212
 213    vg_info( "worlds cleared, begining load\n" );
 214    skaterift_shift_op( k_async_op_world_loading );
 215
 216    /* finally can start the loader */
 217    vg_loader_start( skaterift_world_changer_thread, NULL );
 218 }
 219
 220 /* places all loaded worlds into unloading state */
 221 static void skaterift_change_world( const char *world_name )
 222 {
 223    vg_info( "switching to %s\n", world_name );
 224
 225    if( world_static.active_world != 0 ){
 226       vg_error( "Cannot change worlds while in non-root world\n" );
 227    }
 228    else{
 229       skaterift_begin_op( k_async_op_world_preloading );
 230
 231       vg_linear_clear( vg_mem.scratch );
 232       vg_strncpy( world_name, world_loader.name,
 233                   vg_list_size(world_loader.name), k_strncpy_overflow_fatal );
 234
 235       vg_info( "unloading old worlds\n" );
 236       world_unlink_nonlocal( &world_static.worlds[0] );
 237
 238       for( u32 i=1; i<vg_list_size(world_static.worlds); i++ ){
 239          world_instance *inst = &world_static.worlds[i];
 240
 241          if( inst->status == k_world_status_loaded ){
 242             inst->status = k_world_status_unloading;
 243             world_fadeout_audio( inst );
 244          }
 245       }
 246    }
 247 }
 248
 249 /* console command for the above function */
 250 static int skaterift_change_world_command( int argc, const char *argv[] )
 251 {
 252    if( argc == 1 )
 253       skaterift_change_world( argv[0] );
 254
 255    return 0;
 256 }
 257
 258
 259 static world_instance *world_loading_instance(void){
 260    return &world_static.worlds[ world_loader.world_index ];
 261 }
 262
 263 /*
 264  * checks:
 265  *  1. to see if all audios owned by the world have been stopped
 266  *  2. that this is the least significant world
 267  */
 268 static int world_freeable( world_instance *world )
 269 {
 270    if( world->status != k_world_status_unloading ) return 0;
 271    u8 world_id = (world - world_static.worlds) + 1;
 272
 273    for( u32 i=world_id; i<vg_list_size(world_static.worlds); i++ ){
 274       if( world_static.worlds[i].status != k_world_status_unloaded ){
 275          return 0;
 276       }
 277    }
 278
 279    int freeable = 1;
 280    audio_lock();
 281    for( u32 i=0; i<AUDIO_CHANNELS; i++ ){
 282       audio_channel *ch = &vg_audio.channels[i];
 283
 284       if( ch->allocated && (ch->world_id == world_id)){
 285          if( !audio_channel_finished( ch ) ){
 286             freeable = 0;
 287             break;
 288          }
 289       }
 290    }
 291    audio_unlock();
 292    return freeable;
 293 }
 294
 295 /*
 296  * Free all resources for world instance
 297  */
 298 static void world_free( world_instance *world )
 299 {
 300    vg_info( "Free world @%p\n", world );
 301
 302    /* free meshes */
 303    mesh_free( &world->mesh_route_lines );
 304    mesh_free( &world->mesh_geo );
 305    mesh_free( &world->mesh_no_collide );
 306    mesh_free( &world->mesh_water );
 307
 308    /* glDeleteBuffers silently ignores 0's and names that do not correspond to
 309     * existing buffer objects.
 310     * */
 311    glDeleteBuffers( 1, &world->tbo_light_entities );
 312    glDeleteTextures( 1, &world->tex_light_entities );
 313    glDeleteTextures( 1, &world->tex_light_cubes );
 314
 315    /* delete textures and meshes */
 316    glDeleteTextures( world->texture_count, world->textures );
 317
 318    u32 world_index = world - world_static.worlds;
 319    if( world_index ){
 320       vg_linear_del( world_static.worlds[world_index-1].heap,
 321                      vg_linear_header(world->heap) );
 322    }
 323
 324    world->status = k_world_status_unloaded;
 325 }
 326
 327 /*
 328  * reset the world structure without deallocating persistent buffers
 329  * TODO: Make this a memset(0), and have persistent items live in a static loc
 330  */
 331 VG_STATIC void world_init_blank( world_instance *world )
 332 {
 333    memset( &world->meta, 0, sizeof(mdl_context) );
 334
 335    world->textures = NULL;
 336    world->texture_count = 0;
 337    world->surfaces = NULL;
 338    world->surface_count = 0;
 339
 340    world->geo_bh = NULL;
 341    world->volume_bh = NULL;
 342    world->audio_bh = NULL;
 343    world->rendering_gate = NULL;
 344
 345    world->water.enabled = 0;
 346    world->time = 0.0;
 347
 348    /* default lighting conditions
 349     * -------------------------------------------------------------*/
 350    struct ub_world_lighting *state = &world->ub_lighting;
 351
 352    state->g_light_preview = 0;
 353    state->g_shadow_samples = 8;
 354    state->g_water_fog = 0.04f;
 355
 356    v4_zero( state->g_water_plane );
 357    v4_zero( state->g_depth_bounds );
 358
 359    state->g_shadow_length = 9.50f;
 360    state->g_shadow_spread = 0.65f;
 361
 362    v3_copy( (v3f){0.37f, 0.54f, 0.97f}, state->g_daysky_colour );
 363    v3_copy( (v3f){0.03f, 0.05f, 0.20f}, state->g_nightsky_colour );
 364    v3_copy( (v3f){1.00f, 0.32f, 0.01f}, state->g_sunset_colour );
 365    v3_copy( (v3f){0.13f, 0.17f, 0.35f}, state->g_ambient_colour );
 366    v3_copy( (v3f){0.25f, 0.17f, 0.51f}, state->g_sunset_ambient );
 367    v3_copy( (v3f){1.10f, 0.89f, 0.35f}, state->g_sun_colour );
 368 }
 369
 370
 371
 372 #endif /* WORLD_LOAD_C */