world_gen.h

   1 #ifndef WORLD_GEN_H
   2 #define WORLD_GEN_H
   3
   4 #include "world.h"
   5
   6 static void world_add_all_if_material( m4x3f transform, scene *pscene,
   7                                        mdl_header *mdl, u32 id )
   8 {
   9    for( int i=0; i<mdl->node_count; i++ )
  10    {
  11       mdl_node *pnode = mdl_node_from_id( mdl, i );
  12
  13       for( int j=0; j<pnode->submesh_count; j++ )
  14       {
  15          mdl_submesh *sm = mdl_node_submesh( mdl, pnode, j );
  16
  17          if( sm->material_id == id )
  18          {
  19             m4x3f transform2;
  20             mdl_node_transform( pnode, transform2 );
  21             m4x3_mul( transform, transform2, transform2 );
  22
  23             scene_add_submesh( pscene, mdl, sm, transform2 );
  24          }
  25       }
  26
  27       if( pnode->classtype == k_classtype_instance )
  28       {
  29          if( pnode->sub_uid )
  30          {
  31             u32 instance_id = pnode->sub_uid -1;
  32             struct instance_cache *cache = &world.instance_cache[instance_id];
  33             mdl_header *mdl2 = cache->mdl;
  34
  35             m4x3f transform2;
  36             mdl_node_transform( pnode, transform2 );
  37             m4x3_mul( transform, transform2, transform2 );
  38
  39             world_add_all_if_material( transform2, pscene, mdl2, id );
  40          }
  41       }
  42    }
  43 }
  44
  45 static void world_apply_procedural_foliage(void)
  46 {
  47    mdl_header *mfoliage = mdl_load("models/rs_foliage.mdl");
  48
  49    v3f volume;
  50    v3_sub( world.geo.bbx[1], world.geo.bbx[0], volume );
  51    volume[1] = 1.0f;
  52
  53    m4x3f transform;
  54    mdl_node *mblob = mdl_node_from_name( mfoliage, "blob" );
  55    mdl_submesh *sm_blob = mdl_node_submesh( mfoliage, mblob, 0 );
  56
  57    for( int i=0;i<100000;i++ )
  58    {
  59       v3f pos;
  60       v3_mul( volume, (v3f){ vg_randf(), 1000.0f, vg_randf() }, pos );
  61       pos[1] = 1000.0f;
  62       v3_add( pos, world.geo.bbx[0], pos );
  63
  64       ray_hit hit;
  65       hit.dist = INFINITY;
  66
  67       if( ray_world( pos, (v3f){0.0f,-1.0f,0.0f}, &hit ))
  68       {
  69          if( (hit.normal[1] > 0.8f) && ray_hit_is_terrain(&hit) &&
  70              (hit.pos[1] > 0.0f+10.0f) )
  71          {
  72             v4f qsurface, qrandom;
  73             v3f axis;
  74
  75             v3_cross( (v3f){0.0f,1.0f,0.0f}, hit.normal, axis );
  76
  77             float angle = v3_dot(hit.normal,(v3f){0.0f,1.0f,0.0f});
  78             q_axis_angle( qsurface, axis, angle );
  79             q_axis_angle( qrandom, (v3f){0.0f,1.0f,0.0f}, vg_randf()*VG_TAUf );
  80             q_mul( qsurface, qrandom, qsurface );
  81             q_m3x3( qsurface, transform );
  82
  83             v3_copy( hit.pos, transform[3] );
  84             scene_add_submesh( &world.foliage, mfoliage, sm_blob, transform);
  85          }
  86       }
  87    }
  88
  89    vg_free( mfoliage );
  90 }
  91
  92 static void world_load(void)
  93 {
  94    mdl_header *mworld = mdl_load( "models/mp_dev.mdl" );
  95    vg_info( "Loading world: models/mp_dev.mdl\n" );
  96
  97    world.spawn_count = 0;
  98    world.traffic_count = 0;
  99    world.instance_cache = NULL;
 100
 101    /*
 102     * Process entities
 103     */
 104    for( int i=0; i<mworld->node_count; i++ )
 105    {
 106       mdl_node *pnode = mdl_node_from_id( mworld, i );
 107
 108       if( pnode->classtype == k_classtype_none )
 109       {}
 110       else if( pnode->classtype == k_classtype_spawn )
 111       {
 112          struct respawn_point *rp = &world.spawns[ world.spawn_count ++ ];
 113
 114          v3_copy( pnode->co, rp->co );
 115          v4_copy( pnode->q, rp->q );
 116          strcpy( rp->name, mdl_pstr( mworld, pnode->pstr_name ) );
 117       }
 118       else if( pnode->classtype == k_classtype_water )
 119       {
 120          if( wrender.enabled )
 121          {
 122             vg_warn( "Multiple water surfaces in level! ('%s')\n",
 123                   mdl_pstr( mworld, pnode->pstr_name ));
 124             continue;
 125          }
 126
 127          mdl_submesh *sm = mdl_node_submesh( mworld, pnode, 0 );
 128
 129          if( sm )
 130          {
 131             vg_acquire_thread_sync();
 132             {
 133                glmesh surf;
 134                mdl_unpack_submesh( mworld, &surf, sm );
 135                water_set_surface( &surf, pnode->co[1] );
 136             }
 137             vg_release_thread_sync();
 138          }
 139       }
 140       else if( pnode->classtype == k_classtype_car_path )
 141       {
 142          struct classtype_car_path *p = mdl_get_entdata( mworld, pnode );
 143          traffic_node *tn = &world.traffic[ world.traffic_count ];
 144          tn->mn_next = NULL;
 145          tn->mn_next1 = NULL;
 146
 147          if( p->target ) tn->mn_next = mdl_node_from_id( mworld, p->target );
 148          if( p->target1 ) tn->mn_next1 = mdl_node_from_id( mworld, p->target1 );
 149
 150          m4x3f transform;
 151          mdl_node_transform( pnode, transform );
 152          m3x3_mulv( transform, (v3f){1.0f,0.0f,0.0f}, tn->h );
 153          v3_copy( transform[3], tn->co );
 154
 155          pnode->sub_uid = world.traffic_count ++;
 156       }
 157       else if( pnode->classtype == k_classtype_instance )
 158       {
 159          struct classtype_instance *inst = mdl_get_entdata( mworld, pnode );
 160          pnode->sub_uid = 0;
 161
 162          int cached = 0;
 163          for( int i=0; i<world.instance_cache_count; i++ )
 164          {
 165             struct instance_cache *cache = &world.instance_cache[i];
 166             if( inst->pstr_file == cache->pstr_file )
 167             {
 168                cached = 1;
 169                pnode->sub_uid = i+1;
 170                break;
 171             }
 172          }
 173
 174          if( !cached )
 175          {
 176             world.instance_cache = buffer_reserve(
 177                             world.instance_cache, world.instance_cache_count,
 178                             &world.instance_cache_cap, 1,
 179                             sizeof(struct instance_cache) );
 180
 181             struct instance_cache *cache =
 182                &world.instance_cache[world.instance_cache_count];
 183
 184             const char *filename = mdl_pstr(mworld, inst->pstr_file);
 185
 186             cache->pstr_file = inst->pstr_file;
 187             cache->mdl = mdl_load( filename );
 188
 189             if( cache->mdl )
 190             {
 191                world.instance_cache_count ++;
 192                pnode->sub_uid = world.instance_cache_count;
 193                mdl_link_materials( mworld, cache->mdl );
 194                vg_success( "Cached %s\n", filename );
 195             }
 196             else
 197             {
 198                vg_warn( "Failed to cache %s\n", filename );
 199             }
 200          }
 201       }
 202    }
 203
 204    world.instance_cache = buffer_fix( world.instance_cache,
 205                                       world.instance_cache_count,
 206                                      &world.instance_cache_cap,
 207                                      sizeof( struct instance_cache ) );
 208
 209 #if 0
 210    traffic_finalize( world.traffic, world.traffic_count );
 211    for( int i=0; i<vg_list_size(world.van_man); i++ )
 212       world.van_man[i].current =&world.traffic[vg_randint(world.traffic_count)];
 213 #endif
 214
 215    /*
 216     * Compile meshes into the world scenes
 217     */
 218    scene_init( &world.geo );
 219
 220    u32 mat_surf = 0,
 221        mat_surf_oob = 0,
 222        mat_vertex_blend = 0,
 223        mat_alphatest = 0,
 224        mat_graffiti = 0,
 225        mat_subworld = 0,
 226        mat_terrain = 0;
 227
 228    for( int i=1; i<mworld->material_count; i++ )
 229    {
 230       mdl_material *mat = mdl_material_from_id( mworld, i );
 231       const char *mat_name = mdl_pstr( mworld, mat->pstr_name );
 232
 233       if( !strcmp( "surf", mat_name ))
 234          mat_surf = i;
 235       else if( !strcmp( "surf_oob", mat_name ))
 236          mat_surf_oob = i;
 237       else if( !strcmp( "vertex_blend", mat_name ))
 238          mat_vertex_blend = i;
 239       else if( !strcmp( "alphatest", mat_name ))
 240          mat_alphatest = i;
 241       else if( !strcmp( "graffitibox", mat_name ))
 242          mat_graffiti = i;
 243       else if( !strcmp( "terrain", mat_name ) )
 244          mat_terrain = i;
 245    }
 246
 247    m4x3f midentity;
 248    m4x3_identity( midentity );
 249
 250    if( mat_terrain )
 251       world_add_all_if_material( midentity, &world.geo, mworld, mat_terrain );
 252    scene_copy_slice( &world.geo, &world.sm_terrain );
 253
 254    if( mat_surf_oob )
 255       world_add_all_if_material( midentity, &world.geo, mworld, mat_surf_oob );
 256    else
 257       vg_warn( "No OOB surface\n" );
 258    scene_copy_slice( &world.geo, &world.sm_geo_std_oob );
 259
 260    if( mat_surf )
 261       world_add_all_if_material( midentity, &world.geo, mworld, mat_surf );
 262    scene_copy_slice( &world.geo, &world.sm_geo_std );
 263
 264    if( mat_vertex_blend )
 265       world_add_all_if_material( midentity, &world.geo,mworld,mat_vertex_blend);
 266    scene_copy_slice( &world.geo, &world.sm_geo_vb );
 267
 268    vg_acquire_thread_sync();
 269    scene_upload( &world.geo );
 270    vg_release_thread_sync();
 271
 272    scene_bh_create( &world.geo );
 273
 274
 275    /* Foliage /nocollide layer.
 276     * TODO: Probably should have material traits for this
 277     */
 278    scene_init( &world.foliage );
 279
 280    world_apply_procedural_foliage();
 281    scene_copy_slice( &world.foliage, &world.sm_foliage_main );
 282
 283    world_add_all_if_material( midentity, &world.foliage, mworld, mat_alphatest);
 284    scene_copy_slice( &world.foliage, &world.sm_foliage_alphatest );
 285
 286    world_add_all_if_material( midentity, &world.foliage, mworld, mat_graffiti );
 287    scene_copy_slice( &world.foliage, &world.sm_graffiti );
 288
 289
 290    vg_acquire_thread_sync();
 291    {
 292       scene_upload( &world.foliage );
 293
 294       /*
 295        * Rendering the depth map
 296        */
 297       m4x4f ortho;
 298       m4x3f camera;
 299
 300       v3f extent;
 301       v3_sub( world.geo.bbx[1], world.geo.bbx[0], extent );
 302
 303       float fl = world.geo.bbx[0][0],
 304             fr = world.geo.bbx[1][0],
 305             fb = world.geo.bbx[0][2],
 306             ft = world.geo.bbx[1][2],
 307             rl = 1.0f / (fr-fl),
 308             tb = 1.0f / (ft-fb);
 309
 310       m4x4_zero( ortho );
 311       ortho[0][0] = 2.0f * rl;
 312       ortho[2][1] = 2.0f * tb;
 313       ortho[3][0] = (fr + fl) * -rl;
 314       ortho[3][1] = (ft + fb) * -tb;
 315       ortho[3][3] = 1.0f;
 316       m4x3_identity( camera );
 317
 318       glViewport( 0, 0, 1024, 1024 );
 319       glDisable(GL_DEPTH_TEST);
 320       glBindFramebuffer( GL_FRAMEBUFFER, gpipeline.fb_depthmap );
 321       shader_fscolour_use();
 322       shader_fscolour_uColour( (v4f){-9999.0f,-9999.0f,-9999.0f,-9999.0f} );
 323       render_fsquad();
 324
 325       glEnable(GL_BLEND);
 326       glBlendFunc(GL_ONE, GL_ONE);
 327       glBlendEquation(GL_MAX);
 328       render_world_depth( ortho, camera );
 329       glDisable(GL_BLEND);
 330       glEnable(GL_DEPTH_TEST);
 331       glBindFramebuffer( GL_FRAMEBUFFER, 0 );
 332
 333
 334       /*
 335        * TODO: World settings entity
 336        */
 337       struct ub_world_lighting *winfo = &gpipeline.ub_world_lighting;
 338       v4_copy( wrender.plane, winfo->g_water_plane );
 339
 340       v4f bounds;
 341       bounds[0] = world.geo.bbx[0][0];
 342       bounds[1] = world.geo.bbx[0][2];
 343       bounds[2] = 1.0f/ (world.geo.bbx[1][0]-world.geo.bbx[0][0]);
 344       bounds[3] = 1.0f/ (world.geo.bbx[1][2]-world.geo.bbx[0][2]);
 345       v4_copy( bounds, winfo->g_depth_bounds );
 346
 347       winfo->g_water_fog = 0.04f;
 348       render_update_lighting_ub();
 349    }
 350
 351    vg_release_thread_sync();
 352
 353    world_routes_loadfrom( mworld );
 354
 355    for( int i=0; i<world.instance_cache_count; i++ )
 356       vg_free( world.instance_cache[i].mdl );
 357
 358    vg_free( world.instance_cache );
 359    vg_free( mworld );
 360    scene_free_offline_buffers( &world.foliage );
 361
 362    /*
 363     * Setup scene collider
 364     */
 365    v3_zero( world.rb_geo.co );
 366    q_identity( world.rb_geo.q );
 367
 368    world.rb_geo.type = k_rb_shape_scene;
 369    world.rb_geo.inf.scene.pscene = &world.geo;
 370    world.rb_geo.is_world = 1;
 371    rb_init( &world.rb_geo );
 372 }
 373
 374 #endif /* WORLD_GEN_H */