world_entity.c

   1 #ifndef WORLD_ENTITY_C
   2 #define WORLD_ENTITY_C
   3
   4 #include "world.h"
   5 #include "world_load.h"
   6 #include "entity.h"
   7
   8 VG_STATIC void world_gen_entities_init(void)
   9 {
  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->type == k_gate_type_teleport ){
  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
  92 VG_STATIC
  93 ent_spawn *world_find_closest_spawn( world_instance *world, v3f position )
  94 {
  95    ent_spawn *rp = NULL, *r;
  96    float min_dist = INFINITY;
  97
  98    for( u32 i=0; i<mdl_arrcount(&world->ent_spawn); i++ ){
  99       r = mdl_arritm( &world->ent_spawn, i );
 100       float d = v3_dist2( r->transform.co, position );
 101
 102       if( d < min_dist ){
 103          min_dist = d;
 104          rp = r;
 105       }
 106    }
 107
 108    if( !rp ){
 109       if( mdl_arrcount(&world->ent_spawn) ){
 110          vg_warn( "Invalid distances to spawns.. defaulting to first one.\n" );
 111          return mdl_arritm( &world->ent_spawn, 0 );
 112       }
 113       else{
 114          vg_error( "There are no spawns in the level!\n" );
 115       }
 116    }
 117
 118    return rp;
 119 }
 120
 121 VG_STATIC
 122 ent_spawn *world_find_spawn_by_name( world_instance *world, const char *name )
 123 {
 124    ent_spawn *rp = NULL, *r;
 125    for( u32 i=0; i<mdl_arrcount(&world->ent_spawn); i++ ){
 126       r = mdl_arritm( &world->ent_spawn, i );
 127       if( !strcmp( mdl_pstr(&world->meta, r->pstr_name), name ) ){
 128          rp = r;
 129          break;
 130       }
 131    }
 132
 133    if( !rp )
 134       vg_warn( "No spawn named '%s'\n", name );
 135
 136    return rp;
 137 }
 138
 139 VG_STATIC void ent_volume_call( world_instance *world, ent_call *call )
 140 {
 141    u32 index = mdl_entity_id_id( call->id );
 142    ent_volume *volume = mdl_arritm( &world->ent_volume, index );
 143    if( !volume->target ) return;
 144
 145    if( call->function == k_ent_function_trigger ){
 146       call->id = volume->target;
 147
 148       if( volume->type == k_volume_subtype_particle ){
 149          float *co = alloca( sizeof(float)*3 );
 150          co[0] = vg_randf64()*2.0f-1.0f;
 151          co[1] = vg_randf64()*2.0f-1.0f;
 152          co[2] = vg_randf64()*2.0f-1.0f;
 153          m4x3_mulv( volume->to_world, co, co );
 154
 155          call->function = k_ent_function_particle_spawn;
 156          call->data = co;
 157          entity_call( world, call );
 158       }
 159       else{
 160          entity_call( world, call );
 161       }
 162    }
 163 }
 164
 165 VG_STATIC void ent_audio_call( world_instance *world, ent_call *call )
 166 {
 167    if( world->status == k_world_status_unloading ){
 168       vg_warn( "cannot modify audio while unloading world\n" );
 169       return;
 170    }
 171
 172    u8 world_id = (world - world_static.worlds) + 1;
 173    u32 index = mdl_entity_id_id( call->id );
 174    ent_audio *audio = mdl_arritm( &world->ent_audio, index );
 175
 176    v3f sound_co;
 177
 178    if( call->function == k_ent_function_particle_spawn ){
 179       v3_copy( call->data, sound_co );
 180    }
 181    else if( call->function == k_ent_function_trigger ){
 182       v3_copy( audio->transform.co, sound_co );
 183    }
 184    else
 185       vg_fatal_error( "ent_audio_call (invalid function id)" );
 186
 187    float chance = vg_randf64()*100.0f,
 188          bar = 0.0f;
 189
 190    for( u32 i=0; i<audio->clip_count; i++ ){
 191       ent_audio_clip *clip = mdl_arritm( &world->ent_audio_clip,
 192                                           audio->clip_start+i );
 193
 194       float mod = world->probabilities[ audio->probability_curve ],
 195             p   = clip->probability * mod;
 196
 197       bar += p;
 198
 199       if( chance < bar ){
 200          audio_lock();
 201
 202          if( audio->behaviour == k_channel_behaviour_unlimited ){
 203             audio_oneshot_3d( &clip->clip, sound_co,
 204                               audio->transform.s[0],
 205                               audio->volume );
 206          }
 207          else if( audio->behaviour == k_channel_behaviour_discard_if_full ){
 208             audio_channel *ch =
 209                audio_get_group_idle_channel( audio->group,
 210                                              audio->max_channels );
 211
 212             if( ch ){
 213                audio_channel_init( ch, &clip->clip, audio->flags );
 214                audio_channel_group( ch, audio->group );
 215                audio_channel_world( ch, world_id );
 216                audio_channel_set_spacial( ch, sound_co, audio->transform.s[0] );
 217                audio_channel_edit_volume( ch, audio->volume, 1 );
 218                ch = audio_relinquish_channel( ch );
 219             }
 220          }
 221          else if( audio->behaviour == k_channel_behaviour_crossfade_if_full){
 222             audio_channel *ch =
 223                audio_get_group_idle_channel( audio->group,
 224                                              audio->max_channels );
 225
 226             /* group is full */
 227             if( !ch ){
 228                audio_channel *existing =
 229                   audio_get_group_first_active_channel( audio->group );
 230
 231                if( existing ){
 232                   if( existing->source == &clip->clip ){
 233                      audio_unlock();
 234                      return;
 235                   }
 236
 237                   existing->group = 0;
 238                   existing = audio_channel_fadeout(existing, audio->crossfade);
 239                }
 240
 241                ch = audio_get_first_idle_channel();
 242             }
 243
 244             if( ch ){
 245                audio_channel_init( ch, &clip->clip, audio->flags );
 246                audio_channel_group( ch, audio->group );
 247                audio_channel_world( ch, world_id );
 248                audio_channel_fadein( ch, audio->crossfade );
 249                ch = audio_relinquish_channel( ch );
 250             }
 251          }
 252
 253          audio_unlock();
 254          return;
 255       }
 256    }
 257 }
 258
 259 #endif /* WORLD_ENTITY_C */