world_entity.c

   1 #ifndef WORLD_ENTITY_C
   2 #define WORLD_ENTITY_C
   3
   4 #include "model.h"
   5 #include "entity.h"
   6 #include "world.h"
   7 #include "world_load.h"
   8
   9 VG_STATIC void world_gen_entities_init(void){
  10    world_instance *world = world_loading_instance();
  11
  12    /* lights */
  13    for( u32 j=0; j<mdl_arrcount(&world->ent_light); j ++ ){
  14       ent_light *light = mdl_arritm( &world->ent_light, j );
  15
  16       m4x3f to_world;
  17       q_m3x3( light->transform.q, to_world );
  18       v3_copy( light->transform.co, to_world[3] );
  19       m4x3_invert_affine( to_world, light->inverse_world );
  20
  21       light->angle_sin_cos[0] = sinf( light->angle * 0.5f );
  22       light->angle_sin_cos[1] = cosf( light->angle * 0.5f );
  23    }
  24
  25    /* gates */
  26    for( u32 j=0; j<mdl_arrcount(&world->ent_gate); j ++ ){
  27       ent_gate *gate = mdl_arritm( &world->ent_gate, j );
  28
  29       if( !(gate->flags & k_ent_gate_nonlocal) ) {
  30          gate_transform_update( gate );
  31       }
  32    }
  33    vg_async_call( world_link_nonlocal_async, world, 0 );
  34
  35    /* water */
  36    for( u32 j=0; j<mdl_arrcount(&world->ent_water); j++ ){
  37       ent_water *water = mdl_arritm( &world->ent_water, j );
  38       if( world->water.enabled ){
  39          vg_warn( "Multiple water surfaces in level!\n" );
  40          break;
  41       }
  42
  43       world->water.enabled = 1;
  44       water_set_surface( world, water->transform.co[1] );
  45    }
  46
  47    /* volumes */
  48    for( u32 j=0; j<mdl_arrcount(&world->ent_volume); j++ ){
  49       ent_volume *volume = mdl_arritm( &world->ent_volume, j );
  50       mdl_transform_m4x3( &volume->transform, volume->to_world );
  51       m4x3_invert_full( volume->to_world, volume->to_local );
  52    }
  53
  54    /* audio packs */
  55    for( u32 j=0; j<mdl_arrcount(&world->ent_audio); j++ ){
  56       ent_audio *audio = mdl_arritm( &world->ent_audio, j );
  57
  58       for( u32 k=0; k<audio->clip_count; k++ ){
  59          ent_audio_clip *clip = mdl_arritm( &world->ent_audio_clip,
  60                                              audio->clip_start+k );
  61
  62          if( clip->_.file.pack_size ){
  63             u32 size = clip->_.file.pack_size,
  64                 offset = clip->_.file.pack_offset;
  65
  66             /* embedded files are fine to clear the scratch buffer, only
  67              * external audio uses it */
  68
  69             vg_linear_clear( vg_mem.scratch );
  70             void *data = vg_linear_alloc( vg_mem.scratch,
  71                                           clip->_.file.pack_size );
  72
  73             mdl_fread_pack_file( &world->meta, &clip->_.file, data );
  74
  75             clip->_.clip.path = NULL;
  76             clip->_.clip.flags = audio->flags;
  77             clip->_.clip.data = data;
  78             clip->_.clip.size = size;
  79          }
  80          else{
  81             clip->_.clip.path = mdl_pstr(&world->meta,clip->_.file.pstr_path);
  82             clip->_.clip.flags = audio->flags;
  83             clip->_.clip.data = NULL;
  84             clip->_.clip.size = 0;
  85          }
  86
  87          audio_clip_load( &clip->_.clip, world->heap );
  88       }
  89    }
  90
  91    /* create generic entity hierachy for those who need it */
  92    u32 indexed_count = 0;
  93    struct {
  94       u32 type;
  95       mdl_array_ptr *array;
  96    }
  97    indexables[] = {
  98       { k_ent_gate, &world->ent_gate },
  99       { k_ent_challenge, &world->ent_challenge },
 100       { k_ent_volume, &world->ent_volume }
 101    };
 102
 103    for( u32 i=0; i<vg_list_size(indexables); i++ )
 104       indexed_count += mdl_arrcount( indexables[i].array );
 105    vg_info( "indexing %u entities\n", indexed_count );
 106
 107    world->entity_list = vg_linear_alloc( world->heap,
 108                                          vg_align8(indexed_count*sizeof(u32)));
 109
 110    u32 index=0;
 111    for( u32 i=0; i<vg_list_size(indexables); i++ ){
 112       u32 type  = indexables[i].type,
 113           count = mdl_arrcount( indexables[i].array );
 114
 115       for( u32 j=0; j<count; j ++ )
 116          world->entity_list[index ++] = mdl_entity_id( type, j );
 117    }
 118
 119    world->entity_bh = bh_create( world->heap, &bh_system_entity_list, world,
 120                                  indexed_count, 2 );
 121 }
 122
 123 VG_STATIC
 124 ent_spawn *world_find_closest_spawn( world_instance *world, v3f position )
 125 {
 126    ent_spawn *rp = NULL, *r;
 127    float min_dist = INFINITY;
 128
 129    for( u32 i=0; i<mdl_arrcount(&world->ent_spawn); i++ ){
 130       r = mdl_arritm( &world->ent_spawn, i );
 131       float d = v3_dist2( r->transform.co, position );
 132
 133       if( d < min_dist ){
 134          min_dist = d;
 135          rp = r;
 136       }
 137    }
 138
 139    if( !rp ){
 140       if( mdl_arrcount(&world->ent_spawn) ){
 141          vg_warn( "Invalid distances to spawns.. defaulting to first one.\n" );
 142          return mdl_arritm( &world->ent_spawn, 0 );
 143       }
 144       else{
 145          vg_error( "There are no spawns in the level!\n" );
 146       }
 147    }
 148
 149    return rp;
 150 }
 151
 152 VG_STATIC
 153 ent_spawn *world_find_spawn_by_name( world_instance *world, const char *name )
 154 {
 155    ent_spawn *rp = NULL, *r;
 156    for( u32 i=0; i<mdl_arrcount(&world->ent_spawn); i++ ){
 157       r = mdl_arritm( &world->ent_spawn, i );
 158       if( !strcmp( mdl_pstr(&world->meta, r->pstr_name), name ) ){
 159          rp = r;
 160          break;
 161       }
 162    }
 163
 164    if( !rp )
 165       vg_warn( "No spawn named '%s'\n", name );
 166
 167    return rp;
 168 }
 169
 170 VG_STATIC void ent_volume_call( world_instance *world, ent_call *call )
 171 {
 172    u32 index = mdl_entity_id_id( call->id );
 173    ent_volume *volume = mdl_arritm( &world->ent_volume, index );
 174    if( !volume->target ) return;
 175
 176    if( call->function == k_ent_function_trigger ){
 177       call->id = volume->target;
 178
 179       if( volume->flags & k_ent_volume_flag_particles ){
 180          float *co = alloca( sizeof(float)*3 );
 181          co[0] = vg_randf64()*2.0f-1.0f;
 182          co[1] = vg_randf64()*2.0f-1.0f;
 183          co[2] = vg_randf64()*2.0f-1.0f;
 184          m4x3_mulv( volume->to_world, co, co );
 185
 186          call->function = k_ent_function_particle_spawn;
 187          call->data = co;
 188          entity_call( world, call );
 189       }
 190       else{
 191          call->function = volume->trigger.event;
 192          entity_call( world, call );
 193       }
 194    }
 195 }
 196
 197 VG_STATIC void ent_audio_call( world_instance *world, ent_call *call ){
 198    if( world->status == k_world_status_unloading ){
 199       vg_warn( "cannot modify audio while unloading world\n" );
 200       return;
 201    }
 202
 203    u8 world_id = (world - world_static.worlds) + 1;
 204    u32 index = mdl_entity_id_id( call->id );
 205    ent_audio *audio = mdl_arritm( &world->ent_audio, index );
 206
 207    v3f sound_co;
 208
 209    if( call->function == k_ent_function_particle_spawn ){
 210       v3_copy( call->data, sound_co );
 211    }
 212    else if( call->function == k_ent_function_trigger ){
 213       v3_copy( audio->transform.co, sound_co );
 214    }
 215    else
 216       vg_fatal_error( "ent_audio_call (invalid function id)" );
 217
 218    float chance = vg_randf64()*100.0f,
 219          bar = 0.0f;
 220
 221    for( u32 i=0; i<audio->clip_count; i++ ){
 222       ent_audio_clip *clip = mdl_arritm( &world->ent_audio_clip,
 223                                           audio->clip_start+i );
 224
 225       float mod = world->probabilities[ audio->probability_curve ],
 226             p   = clip->probability * mod;
 227
 228       bar += p;
 229       if( chance < bar ){
 230          audio_lock();
 231
 232          if( audio->behaviour == k_channel_behaviour_unlimited ){
 233             audio_oneshot_3d( &clip->_.clip, sound_co,
 234                               audio->transform.s[0],
 235                               audio->volume );
 236          }
 237          else if( audio->behaviour == k_channel_behaviour_discard_if_full ){
 238             audio_channel *ch =
 239                audio_get_group_idle_channel( audio->group,
 240                                              audio->max_channels );
 241
 242             if( ch ){
 243                audio_channel_init( ch, &clip->_.clip, audio->flags );
 244                audio_channel_group( ch, audio->group );
 245                audio_channel_world( ch, world_id );
 246                audio_channel_set_spacial( ch, sound_co, audio->transform.s[0] );
 247                audio_channel_edit_volume( ch, audio->volume, 1 );
 248                ch = audio_relinquish_channel( ch );
 249             }
 250          }
 251          else if( audio->behaviour == k_channel_behaviour_crossfade_if_full){
 252             audio_channel *ch =
 253                audio_get_group_idle_channel( audio->group,
 254                                              audio->max_channels );
 255
 256             /* group is full */
 257             if( !ch ){
 258                audio_channel *existing =
 259                   audio_get_group_first_active_channel( audio->group );
 260
 261                if( existing ){
 262                   if( existing->source == &clip->_.clip ){
 263                      audio_unlock();
 264                      return;
 265                   }
 266
 267                   existing->group = 0;
 268                   existing = audio_channel_fadeout(existing, audio->crossfade);
 269                }
 270
 271                ch = audio_get_first_idle_channel();
 272             }
 273
 274             if( ch ){
 275                audio_channel_init( ch, &clip->_.clip, audio->flags );
 276                audio_channel_group( ch, audio->group );
 277                audio_channel_world( ch, world_id );
 278                audio_channel_fadein( ch, audio->crossfade );
 279                ch = audio_relinquish_channel( ch );
 280             }
 281          }
 282
 283          audio_unlock();
 284          return;
 285       }
 286    }
 287 }
 288
 289
 290 VG_STATIC void ent_ccmd_call( world_instance *world, ent_call *call ){
 291    if( call->function == k_ent_function_trigger ){
 292       u32 index = mdl_entity_id_id( call->id );
 293       ent_ccmd *ccmd = mdl_arritm( &world->ent_ccmd, index );
 294       vg_execute_console_input( mdl_pstr(&world->meta, ccmd->pstr_command) );
 295    }
 296 }
 297
 298 /*
 299  * BVH implementation
 300  * ----------------------------------------------------------------------------
 301  */
 302
 303 VG_STATIC void
 304 entity_bh_expand_bound( void *user, boxf bound, u32 item_index ){
 305    world_instance *world = user;
 306
 307    u32 id    = world->entity_list[ item_index ],
 308        type  = mdl_entity_id_type( id ),
 309        index = mdl_entity_id_id( id );
 310
 311    if( type == k_ent_gate ){
 312       ent_gate *gate = mdl_arritm( &world->ent_gate, index );
 313       boxf box = {{ -gate->dimensions[0], -gate->dimensions[1], -0.1f },
 314                   {  gate->dimensions[0],  gate->dimensions[1],  0.1f }};
 315
 316       m4x3_expand_aabb_aabb( gate->to_world, bound, box );
 317    }
 318    else if( type == k_ent_challenge ){
 319       ent_challenge *challenge = mdl_arritm( &world->ent_challenge, index );
 320
 321       /* TODO: This might be more work than necessary. could maybe just get
 322        *       away with representing them as points */
 323
 324       boxf box;
 325       box_init_inf( box );
 326
 327       for( u32 i=0; i<challenge->submesh_count; i++ ){
 328          mdl_submesh *sm = mdl_arritm( &world->meta.submeshs,
 329                                        challenge->submesh_start+i );
 330          box_concat( box, sm->bbx );
 331       }
 332
 333       m4x3f transform;
 334       mdl_transform_m4x3( &challenge->transform, transform );
 335       m4x3_expand_aabb_aabb( transform, bound, box );
 336    }
 337    else if( type == k_ent_volume ){
 338       ent_volume *volume = mdl_arritm( &world->ent_volume, index );
 339       m4x3_expand_aabb_aabb( volume->to_world, bound,
 340                               (boxf){{-1.0f,-1.0f,-1.0f},{ 1.0f, 1.0f, 1.0f}} );
 341    }
 342 }
 343
 344 VG_STATIC float entity_bh_centroid( void *user, u32 item_index, int axis ){
 345    world_instance *world = user;
 346
 347    u32 id    = world->entity_list[ item_index ],
 348        type  = mdl_entity_id_type( id ),
 349        index = mdl_entity_id_id( id );
 350
 351    if( type == k_ent_gate ){
 352       ent_gate *gate = mdl_arritm( &world->ent_gate, index );
 353       return gate->to_world[3][axis];
 354    }
 355    else if( type == k_ent_challenge ){
 356       ent_challenge *challenge = mdl_arritm( &world->ent_challenge, index );
 357       return challenge->transform.co[axis];
 358    }
 359    else if( type == k_ent_volume ){
 360       ent_volume *volume = mdl_arritm( &world->ent_volume, index );
 361       return volume->transform.co[axis];
 362    }
 363    else {
 364       vg_fatal_error( "Programming error\n" );
 365       return INFINITY;
 366    }
 367 }
 368
 369 VG_STATIC void entity_bh_swap( void *user, u32 ia, u32 ib ){
 370    world_instance *world = user;
 371
 372    u32 a = world->entity_list[ ia ],
 373        b = world->entity_list[ ib ];
 374
 375    world->entity_list[ ia ] = b;
 376    world->entity_list[ ib ] = a;
 377 }
 378
 379 VG_STATIC void entity_bh_debug( void *user, u32 item_index ){
 380    world_instance *world = user;
 381
 382    u32 id    = world->entity_list[ item_index ],
 383        type  = mdl_entity_id_type( id ),
 384        index = mdl_entity_id_id( id );
 385
 386    if( type == k_ent_gate ){
 387       ent_gate *gate = mdl_arritm( &world->ent_gate, index );
 388       boxf box = {{ -gate->dimensions[0], -gate->dimensions[1], -0.1f },
 389                   {  gate->dimensions[0],  gate->dimensions[1],  0.1f }};
 390       vg_line_boxf_transformed( gate->to_world, box, 0xf000ff00 );
 391    }
 392    else if( type == k_ent_challenge ){
 393       ent_challenge *challenge = mdl_arritm( &world->ent_challenge, index );
 394       boxf box;
 395       box_init_inf( box );
 396
 397       for( u32 i=0; i<challenge->submesh_count; i++ ){
 398          mdl_submesh *sm = mdl_arritm( &world->meta.submeshs,
 399                                        challenge->submesh_start+i );
 400          box_concat( box, sm->bbx );
 401       }
 402
 403       m4x3f transform;
 404       mdl_transform_m4x3( &challenge->transform, transform );
 405       vg_line_boxf_transformed( transform, box, 0xf000ff00 );
 406    }
 407    else if( type == k_ent_volume ){
 408       ent_volume *volume = mdl_arritm( &world->ent_volume, index );
 409       vg_line_boxf_transformed( volume->to_world,
 410                                 (boxf){{-1.0f,-1.0f,-1.0f},{ 1.0f, 1.0f, 1.0f}},
 411                                 0xf000ff00 );
 412    }
 413    else{
 414       vg_fatal_error( "Programming error\n" );
 415    }
 416 }
 417
 418 VG_STATIC void entity_bh_closest( void *user, u32 item_index, v3f point,
 419                                   v3f closest ){
 420    world_instance *world = user;
 421
 422    u32 id    = world->entity_list[ item_index ],
 423        type  = mdl_entity_id_type( id ),
 424        index = mdl_entity_id_id( id );
 425
 426    if( type == k_ent_gate ){
 427       ent_gate *gate = mdl_arritm( &world->ent_gate, index );
 428       v3_copy( gate->to_world[3], closest );
 429    }
 430    else if( type == k_ent_challenge ){
 431       ent_challenge *challenge = mdl_arritm( &world->ent_challenge, index );
 432       v3_copy( challenge->transform.co, closest );
 433    }
 434    else if( type == k_ent_volume ){
 435       ent_volume *volume = mdl_arritm( &world->ent_volume, index );
 436       v3_copy( volume->to_world[3], closest );
 437    }
 438    else{
 439       vg_fatal_error( "Programming error\n" );
 440    }
 441 }
 442
 443 #endif /* WORLD_ENTITY_C */