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