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    mdl_load_array( meta, &world->ent_challenge, "ent_challenge",  heap );
  63
  64    mdl_array_ptr infos;
  65    mdl_load_array( meta, &infos, "ent_worldinfo", vg_mem.scratch );
  66
  67    if( mdl_arrcount(&infos) ){
  68       world->info = *((ent_worldinfo *)mdl_arritm(&infos,0));
  69    }
  70    else{
  71       world->info.pstr_author = 0;
  72       world->info.pstr_desc = 0;
  73       world->info.pstr_name = 0;
  74       world->info.timezone = 0.0f;
  75    }
  76
  77    time_t t;
  78    struct tm *tm;
  79    time( &t );
  80    tm = gmtime( &t );
  81    world->time = (float)tm->tm_min/20.0f + (world->info.timezone/24.0f);
  82
  83    /* process resources from pack */
  84    world_gen_load_surfaces();
  85    world_gen_routes_ent_init();
  86    world_gen_entities_init();
  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    vg_async_stall();
  94
  95    mdl_close( meta );
  96    world->status = k_world_status_loaded;
  97 }
  98
  99 static void skaterift_world_change_done( void *payload, u32 size ){
 100    world_loader.state = k_world_loader_none;
 101 }
 102
 103 /*
 104  * Does a complete world switch using the remaining free slots
 105  */
 106 static void skaterift_world_changer_thread( void *_ ){
 107    char path_buf[4096];
 108    vg_str path;
 109    vg_strnull( &path, path_buf, 4096 );
 110
 111    if( world_loader.reg ){
 112       addon_get_content_folder( world_loader.reg, &path );
 113    }
 114    else {
 115       vg_strcat( &path, "maps/" );
 116       vg_strcat( &path, world_loader.override_name );
 117    }
 118
 119    vg_str folder = path;
 120    if( !vg_strgood( &folder ) ) {
 121       vg_error( "Load target too long\n" );
 122       return;
 123    }
 124
 125    char worlds[3][4096];
 126    u32 i=0;
 127
 128    vg_dir dir;
 129    if( !vg_dir_open(&dir, folder.buffer) ){
 130       vg_error( "opendir('%s') failed\n", folder.buffer );
 131       return;
 132    }
 133
 134    while( vg_dir_next_entry(&dir) ){
 135       if( vg_dir_entry_type(&dir) == k_vg_entry_type_file ){
 136          const char *d_name = vg_dir_entry_name(&dir);
 137          if( d_name[0] == '.' ) continue;
 138
 139          vg_str file = folder;
 140          vg_strcat( &file, "/" );
 141          vg_strcat( &file, d_name );
 142          if( !vg_strgood( &file ) ) continue;
 143
 144          char *ext = vg_strch( &file, '.' );
 145          if( !ext ) continue;
 146          if( strcmp(ext,".mdl") ) continue;
 147
 148          if( i == 3 ){
 149             vg_warn( "There are too many .mdl files in the map folder!(3)\n" );
 150             break;
 151          }
 152
 153          strcpy( worlds[i++], file.buffer );
 154       }
 155    }
 156    vg_dir_close(&dir);
 157
 158    if( i == 0 ){
 159       vg_warn( "There are no .mdl files in the map folder.\n" );
 160    }
 161
 162    u32 first_index = 0;
 163    for( u32 j=0; j<i; j++ ){
 164       vg_str name = { .buffer = worlds[j], .i=strlen(worlds[j]),
 165                       sizeof(worlds[j]) };
 166       char *fname = vg_strch( &name, '/' );
 167       if( fname ){
 168          if( !strcmp( fname+1, "main.mdl" ) ){
 169             first_index = j;
 170          }
 171       }
 172    }
 173
 174    world_loader.generate_point_cloud = 1;
 175    world_loader.world_index = 1;
 176    world_load_mdl( worlds[first_index] );
 177
 178    world_loader.generate_point_cloud = 0;
 179    for( u32 j=0; j<i; j++ ){
 180       if( j != first_index ){
 181          world_loader.world_index = j+1;
 182          world_load_mdl( worlds[j] );
 183       }
 184    }
 185
 186    vg_async_call( skaterift_world_change_done, NULL, 0 );
 187 }
 188
 189 /* holding pattern before we can start loading the new world, since we might be
 190  * waiting for audio to stop */
 191 static void skaterift_change_world_preupdate(void){
 192    for( u32 i=1; i<vg_list_size(world_static.worlds); i++ ){
 193       world_instance *inst = &world_static.worlds[i];
 194
 195       if( inst->status == k_world_status_unloading ){
 196          if( world_freeable( inst ) ){
 197             world_free( inst );
 198          }
 199          return;
 200       }
 201    }
 202
 203    vg_info( "worlds cleared, begining load\n" );
 204    world_loader.state = k_world_loader_load;
 205
 206    /* finally can start the loader */
 207    vg_loader_start( skaterift_world_changer_thread, NULL );
 208 }
 209
 210 /* places all loaded worlds into unloading state */
 211 static void skaterift_change_world_start(void){
 212    if( world_loader.reg ){
 213       vg_info( "switching to %s ("PRINTF_U64"\n",
 214                world_loader.reg->alias.foldername,
 215                world_loader.reg->alias.workshop_id );
 216    }
 217    else{
 218       vg_info( "switching to %s(local)\n", world_loader.override_name );
 219    }
 220
 221    if( world_static.active_world != 0 ){
 222       vg_error( "Cannot change worlds while in non-root world\n" );
 223    }
 224    else{
 225       world_loader.state = k_world_loader_preload;
 226
 227       vg_linear_clear( vg_mem.scratch ); /* ?? */
 228       vg_info( "unloading old worlds\n" );
 229       world_unlink_nonlocal( &world_static.worlds[0] );
 230
 231       for( u32 i=1; i<vg_list_size(world_static.worlds); i++ ){
 232          world_instance *inst = &world_static.worlds[i];
 233
 234          if( inst->status == k_world_status_loaded ){
 235             inst->status = k_world_status_unloading;
 236             world_fadeout_audio( inst );
 237          }
 238       }
 239    }
 240 }
 241
 242 /* console command for the above function */
 243 static int skaterift_change_world_command( int argc, const char *argv[] )
 244 {
 245    if( argc == 1 ){
 246       world_loader.reg = NULL;
 247       vg_strncpy( argv[0], world_loader.override_name,
 248                   vg_list_size( world_loader.override_name ),
 249                   k_strncpy_always_add_null );
 250       skaterift_change_world_start();
 251    }
 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->entity_bh = NULL;
 340    world->entity_list = 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 */