world.h

   1 #include "common.h"
   2
   3 static int ray_world( v3f pos, v3f dir, ray_hit *hit );
   4
   5 #ifndef WORLD_H
   6 #define WORLD_H
   7
   8 #include "scene.h"
   9 #include "terrain.h"
  10 #include "render.h"
  11 #include "water.h"
  12 #include "rigidbody.h"
  13 #include "gate.h"
  14 #include "bvh.h"
  15 #include "lighting.h"
  16 #include "model.h"
  17 #include "traffic.h"
  18
  19 #include "shaders/terrain.h"
  20 #include "shaders/sky.h"
  21 #include "shaders/planeinf.h"
  22 #include "shaders/standard.h"
  23 #include "shaders/vblend.h"
  24 #include "shaders/gpos.h"
  25 #include "shaders/fscolour.h"
  26
  27 static struct gworld
  28 {
  29    /* gameplay */
  30    struct respawn_point
  31    {
  32       v3f co;
  33       v4f q;
  34       char name[32];
  35    }
  36    spawns[32];
  37    u32 spawn_count;
  38
  39    teleport_gate gates[64];
  40    u32 gate_count;
  41
  42    /* Paths */
  43    traffic_node traffic[128];
  44    u32 traffic_count;
  45
  46    traffic_driver van_man[6];
  47
  48    /* Physics */
  49    rigidbody temp_rbs[128];
  50    u32 rb_count;
  51
  52    /* Rendering & geometry */
  53    scene geo, foliage;
  54    rigidbody rb_geo;
  55
  56    mdl_submesh sm_geo_std_oob, sm_geo_std, sm_geo_vb;
  57
  58    glmesh skybox, skydome;
  59    mdl_submesh dome_upper, dome_lower;
  60
  61    glmesh cars;
  62    mdl_submesh car_holden;
  63
  64    rigidbody mr_ball;
  65
  66    /* Load time */
  67
  68    struct instance_cache
  69    {
  70       mdl_header *mdl;
  71       u32 pstr_file;
  72    }
  73    * instance_cache;
  74    u32 instance_cache_count,
  75        instance_cache_cap;
  76 }
  77 world;
  78
  79 vg_tex2d tex_terrain_colours = { .path = "textures/gradients.qoi",
  80                                  .flags = VG_TEXTURE_CLAMP|VG_TEXTURE_NEAREST };
  81
  82 vg_tex2d tex_terrain_noise = { .path = "textures/garbage.qoi",
  83                                  .flags = VG_TEXTURE_NEAREST };
  84
  85 static void ray_world_get_tri( ray_hit *hit, v3f tri[3] )
  86 {
  87    for( int i=0; i<3; i++ )
  88       v3_copy( world.geo.verts[ hit->tri[i] ].co, tri[i] );
  89 }
  90
  91 static int ray_world( v3f pos, v3f dir, ray_hit *hit )
  92 {
  93    return scene_raycast( &world.geo, pos, dir, hit );
  94 }
  95
  96 static int ray_hit_is_ramp( ray_hit *hit )
  97 {
  98    return hit->tri[0] > world.sm_geo_std_oob.vertex_count;
  99 }
 100
 101 static void world_register(void)
 102 {
 103    shader_terrain_register();
 104    shader_sky_register();
 105    shader_planeinf_register();
 106    shader_gpos_register();
 107    shader_fscolour_register();
 108 }
 109
 110 static void world_free(void)
 111 {
 112    /* TODO.. */
 113 }
 114
 115 static void render_world_depth( m4x4f projection, m4x3f camera );
 116
 117 static void add_all_if_material( m4x3f transform, scene *pscene,
 118                                  mdl_header *mdl, u32 id )
 119 {
 120    for( int i=0; i<mdl->node_count; i++ )
 121    {
 122       mdl_node *pnode = mdl_node_from_id( mdl, i );
 123
 124       for( int j=0; j<pnode->submesh_count; j++ )
 125       {
 126          mdl_submesh *sm = mdl_node_submesh( mdl, pnode, j );
 127
 128          if( sm->material_id == id )
 129          {
 130             m4x3f transform2;
 131             mdl_node_transform( pnode, transform2 );
 132             m4x3_mul( transform, transform2, transform2 );
 133
 134             scene_add_submesh( pscene, mdl, sm, transform2 );
 135          }
 136       }
 137
 138       if( pnode->classtype == k_classtype_instance )
 139       {
 140          if( pnode->sub_uid )
 141          {
 142             u32 instance_id = pnode->sub_uid -1;
 143             struct instance_cache *cache = &world.instance_cache[instance_id];
 144             mdl_header *mdl2 = cache->mdl;
 145
 146             m4x3f transform2;
 147             mdl_node_transform( pnode, transform2 );
 148             m4x3_mul( transform, transform2, transform2 );
 149
 150             add_all_if_material( transform2, pscene, mdl2, id );
 151          }
 152       }
 153    }
 154 }
 155
 156 static void world_apply_foliage(void)
 157 {
 158    scene_init( &world.foliage );
 159    mdl_header *mfoliage = mdl_load("models/rs_foliage.mdl");
 160
 161    v3f volume;
 162    v3_sub( world.geo.bbx[1], world.geo.bbx[0], volume );
 163    volume[1] = 1.0f;
 164
 165    m4x3f transform;
 166    mdl_node *mblob = mdl_node_from_name( mfoliage, "blob" );
 167    mdl_submesh *sm_blob = mdl_node_submesh( mfoliage, mblob, 0 );
 168
 169    for( int i=0;i<100000;i++ )
 170    {
 171       v3f pos;
 172       v3_mul( volume, (v3f){ vg_randf(), 1000.0f, vg_randf() }, pos );
 173       pos[1] = 1000.0f;
 174       v3_add( pos, world.geo.bbx[0], pos );
 175
 176       ray_hit hit;
 177       hit.dist = INFINITY;
 178
 179       if( ray_world( pos, (v3f){0.0f,-1.0f,0.0f}, &hit ))
 180       {
 181          if( hit.normal[1] > 0.8f && !ray_hit_is_ramp(&hit) &&
 182              hit.pos[1] > water_height()+10.0f )
 183          {
 184             v4f qsurface, qrandom;
 185             v3f axis;
 186
 187             v3_cross( (v3f){0.0f,1.0f,0.0f}, hit.normal, axis );
 188
 189             float angle = v3_dot(hit.normal,(v3f){0.0f,1.0f,0.0f});
 190             q_axis_angle( qsurface, axis, angle );
 191             q_axis_angle( qrandom, (v3f){0.0f,1.0f,0.0f}, vg_randf()*VG_TAUf );
 192             q_mul( qsurface, qrandom, qsurface );
 193             q_m3x3( qsurface, transform );
 194
 195             v3_copy( hit.pos, transform[3] );
 196             scene_add_submesh( &world.foliage, mfoliage, sm_blob, transform);
 197          }
 198       }
 199    }
 200
 201    scene_upload( &world.foliage );
 202    free( mfoliage );
 203 }
 204
 205 static void world_load(void)
 206 {
 207    mdl_header *mworld = mdl_load( "models/mp_dev.mdl" );
 208
 209    world.spawn_count = 0;
 210    world.gate_count = 0;
 211    world.rb_count = 0;
 212    world.traffic_count = 0;
 213    world.instance_cache = NULL;
 214
 215    /*
 216     * Process entities
 217     */
 218    for( int i=0; i<mworld->node_count; i++ )
 219    {
 220       mdl_node *pnode = mdl_node_from_id( mworld, i );
 221
 222       if( pnode->classtype == k_classtype_none )
 223       {}
 224       else if( pnode->classtype == k_classtype_gate )
 225       {
 226          struct classtype_gate *entgate = mdl_get_entdata( mworld, pnode );
 227
 228          if( entgate->target )
 229          {
 230             mdl_node *pother = mdl_node_from_id( mworld, entgate->target );
 231
 232             teleport_gate *gate = &world.gates[ world.gate_count ++ ];
 233
 234             v3_copy( pnode->co,  gate->co[0] );
 235             v3_copy( pother->co, gate->co[1] );
 236             v4_copy( pnode->q,   gate->q[0] );
 237             v4_copy( pother->q,  gate->q[1] );
 238             v2_copy( pnode->s,   gate->dims );
 239
 240             gate_transform_update( gate );
 241          }
 242       }
 243       else if( pnode->classtype == k_classtype_block )
 244       {
 245          struct classtype_block *block = mdl_get_entdata( mworld, pnode );
 246
 247          m4x3f transform;
 248          mdl_node_transform( pnode, transform );
 249
 250          rigidbody *rb = &world.temp_rbs[ world.rb_count ++ ];
 251
 252          box_copy( block->bbx, rb->bbx ); /* TODO: apply scale */
 253          v3_copy( pnode->co, rb->co );
 254          rb_init( rb );
 255          v4_copy( pnode->q, rb->q );
 256          rb_update_transform( rb );
 257       }
 258       else if( pnode->classtype == k_classtype_spawn )
 259       {
 260          struct respawn_point *rp = &world.spawns[ world.spawn_count ++ ];
 261
 262          v3_copy( pnode->co, rp->co );
 263          v4_copy( pnode->q, rp->q );
 264          strcpy( rp->name, mdl_pstr( mworld, pnode->pstr_name ) );
 265       }
 266       else if( pnode->classtype == k_classtype_water )
 267       {
 268          if( wrender.enabled )
 269          {
 270             vg_warn( "Multiple water surfaces in level! ('%s')\n",
 271                   mdl_pstr( mworld, pnode->pstr_name ));
 272             continue;
 273          }
 274
 275          mdl_submesh *sm = mdl_node_submesh( mworld, pnode, 0 );
 276
 277          if( sm )
 278          {
 279             glmesh surf;
 280             mdl_unpack_submesh( mworld, &surf, sm );
 281             water_init();
 282             water_set_surface( &surf, pnode->co[1] );
 283          }
 284       }
 285       else if( pnode->classtype == k_classtype_car_path )
 286       {
 287          struct classtype_car_path *p = mdl_get_entdata( mworld, pnode );
 288          traffic_node *tn = &world.traffic[ world.traffic_count ];
 289          tn->mn_next = NULL;
 290          tn->mn_next1 = NULL;
 291
 292          if( p->target ) tn->mn_next = mdl_node_from_id( mworld, p->target );
 293          if( p->target1 ) tn->mn_next1 = mdl_node_from_id( mworld, p->target1 );
 294
 295          m4x3f transform;
 296          mdl_node_transform( pnode, transform );
 297          m3x3_mulv( transform, (v3f){1.0f,0.0f,0.0f}, tn->h );
 298          v3_copy( transform[3], tn->co );
 299
 300          pnode->sub_uid = world.traffic_count ++;
 301       }
 302       else if( pnode->classtype == k_classtype_instance )
 303       {
 304          struct classtype_instance *inst = mdl_get_entdata( mworld, pnode );
 305          pnode->sub_uid = 0;
 306
 307          int cached = 0;
 308          for( int i=0; i<world.instance_cache_count; i++ )
 309          {
 310             struct instance_cache *cache = &world.instance_cache[i];
 311             if( inst->pstr_file == cache->pstr_file )
 312             {
 313                cached = 1;
 314                pnode->sub_uid = i+1;
 315                break;
 316             }
 317          }
 318
 319          if( !cached )
 320          {
 321             world.instance_cache = buffer_reserve(
 322                             world.instance_cache, world.instance_cache_count,
 323                             &world.instance_cache_cap, 1,
 324                             sizeof(struct instance_cache) );
 325
 326             struct instance_cache *cache =
 327                &world.instance_cache[world.instance_cache_count];
 328
 329             const char *filename = mdl_pstr(mworld, inst->pstr_file);
 330
 331             cache->pstr_file = inst->pstr_file;
 332             cache->mdl = mdl_load( filename );
 333
 334             if( cache->mdl )
 335             {
 336                world.instance_cache_count ++;
 337                pnode->sub_uid = world.instance_cache_count;
 338                mdl_link_materials( mworld, cache->mdl );
 339                vg_success( "Cached %s\n", filename );
 340             }
 341             else
 342             {
 343                vg_warn( "Failed to cache %s\n", filename );
 344             }
 345          }
 346       }
 347    }
 348
 349    world.instance_cache = buffer_fix( world.instance_cache,
 350                                       world.instance_cache_count,
 351                                      &world.instance_cache_cap,
 352                                      sizeof( struct instance_cache ) );
 353
 354    traffic_finalize( world.traffic, world.traffic_count );
 355    for( int i=0; i<vg_list_size(world.van_man); i++ )
 356       world.van_man[i].current =&world.traffic[vg_randint(world.traffic_count)];
 357
 358    /*
 359     * Compile meshes into the world scenes
 360     */
 361    scene_init( &world.geo );
 362
 363    u32 mat_surf = 0,
 364        mat_surf_oob = 0,
 365        mat_vertex_blend = 0;
 366
 367    for( int i=1; i<mworld->material_count; i++ )
 368    {
 369       mdl_material *mat = mdl_material_from_id( mworld, i );
 370       const char *mat_name = mdl_pstr( mworld, mat->pstr_name );
 371
 372       if( !strcmp( "surf", mat_name ))
 373          mat_surf = i;
 374       else if( !strcmp( "surf_oob", mat_name ))
 375          mat_surf_oob = i;
 376       else if( !strcmp( "vertex_blend", mat_name ))
 377          mat_vertex_blend = i;
 378    }
 379
 380    vg_info( "surf %d\noob %d\nvert_blend %d\n", mat_surf, mat_surf_oob,
 381                                                 mat_vertex_blend );
 382
 383    m4x3f midentity;
 384    m4x3_identity( midentity );
 385
 386    if( mat_surf_oob )
 387       add_all_if_material( midentity, &world.geo, mworld, mat_surf_oob );
 388    else
 389       vg_warn( "No OOB surface\n" );
 390    scene_copy_slice( &world.geo, &world.sm_geo_std_oob );
 391
 392    if( mat_surf )
 393       add_all_if_material( midentity, &world.geo, mworld, mat_surf );
 394    scene_copy_slice( &world.geo, &world.sm_geo_std );
 395
 396    if( mat_vertex_blend )
 397       add_all_if_material( midentity, &world.geo, mworld, mat_vertex_blend );
 398    scene_copy_slice( &world.geo, &world.sm_geo_vb );
 399
 400    scene_upload( &world.geo );
 401    scene_bh_create( &world.geo );
 402
 403    world_apply_foliage();
 404    free( world.instance_cache );
 405    free( mworld );
 406
 407    /*
 408     * Rendering the depth map
 409     */
 410    m4x4f ortho;
 411    m4x3f camera;
 412
 413    v3f extent;
 414    v3_sub( world.geo.bbx[1], world.geo.bbx[0], extent );
 415
 416    float fl = world.geo.bbx[0][0],
 417          fr = world.geo.bbx[1][0],
 418          fb = world.geo.bbx[0][2],
 419          ft = world.geo.bbx[1][2],
 420          rl = 1.0f / (fr-fl),
 421          tb = 1.0f / (ft-fb);
 422
 423    m4x4_zero( ortho );
 424         ortho[0][0] = 2.0f * rl;
 425         ortho[2][1] = 2.0f * tb;
 426    ortho[3][0] = (fr + fl) * -rl;
 427    ortho[3][1] = (ft + fb) * -tb;
 428    ortho[3][3] = 1.0f;
 429    m4x3_identity( camera );
 430
 431    glViewport( 0, 0, 1024, 1024 );
 432    glDisable(GL_DEPTH_TEST);
 433    glBindFramebuffer( GL_FRAMEBUFFER, gpipeline.fb_depthmap );
 434    shader_fscolour_use();
 435    shader_fscolour_uColour( (v4f){-9999.0f,-9999.0f,-9999.0f,-9999.0f} );
 436    render_fsquad();
 437
 438    glEnable(GL_BLEND);
 439    glBlendFunc(GL_ONE, GL_ONE);
 440    glBlendEquation(GL_MAX);
 441    render_world_depth( ortho, camera );
 442    glDisable(GL_BLEND);
 443    glEnable(GL_DEPTH_TEST);
 444
 445    /*
 446     * TODO: World settings entity
 447     */
 448    struct ub_world_lighting *winfo = &gpipeline.ub_world_lighting;
 449    v4_copy( wrender.plane, winfo->g_water_plane );
 450
 451    v4f bounds;
 452    bounds[0] = world.geo.bbx[0][0];
 453    bounds[1] = world.geo.bbx[0][2];
 454    bounds[2] = 1.0f/ (world.geo.bbx[1][0]-world.geo.bbx[0][0]);
 455    bounds[3] = 1.0f/ (world.geo.bbx[1][2]-world.geo.bbx[0][2]);
 456    v4_copy( bounds, winfo->g_depth_bounds );
 457
 458    winfo->g_water_fog = 0.04f;
 459    render_update_lighting_ub();
 460
 461
 462    world.mr_ball.type = k_rb_shape_sphere;
 463    world.mr_ball.inf.sphere.radius = 2.0f;
 464    v3_copy( (v3f){ 0.0f, 110.0f, 0.0f }, world.mr_ball.co );
 465
 466    q_identity(world.mr_ball.q);
 467    rb_init( &world.mr_ball );
 468 }
 469
 470 static void world_init(void)
 471 {
 472    vg_tex2d_init( (vg_tex2d *[]){ &tex_terrain_colours,
 473                                   &tex_terrain_noise }, 2 );
 474
 475    mdl_header *mcars = mdl_load( "models/rs_cars.mdl" );
 476    mdl_unpack_glmesh( mcars, &world.cars );
 477    mdl_node *nholden = mdl_node_from_name( mcars, "holden" );
 478    world.car_holden = *mdl_node_submesh( mcars, nholden, 0 );
 479    free(mcars);
 480
 481
 482    mdl_header *msky = mdl_load("models/rs_skydome.mdl");
 483    mdl_unpack_glmesh( msky, &world.skydome );
 484
 485    mdl_node *nlower = mdl_node_from_name( msky, "dome_lower" ),
 486             *nupper = mdl_node_from_name( msky, "dome_upper" );
 487
 488    world.dome_lower = *mdl_node_submesh( msky, nlower, 0 );
 489    world.dome_upper = *mdl_node_submesh( msky, nupper, 0 );
 490    free(msky);
 491
 492    /*
 493     * Setup scene collider
 494     */
 495    v3_zero( world.rb_geo.co );
 496    q_identity( world.rb_geo.q );
 497
 498    world.rb_geo.type = k_rb_shape_scene;
 499    world.rb_geo.inf.scene.pscene = &world.geo;
 500    world.rb_geo.is_world = 1;
 501    rb_init( &world.rb_geo );
 502 }
 503
 504 static void world_update(void)
 505 {
 506 #if 0
 507    rb_solver_reset();
 508    rb_build_manifold_terrain_sphere( &world.mr_ball );
 509
 510    for( int i=0; i<5; i++ )
 511       rb_solve_contacts( rb_contact_buffer, rb_contact_count );
 512
 513    rb_iter( &world.mr_ball );
 514    rb_update_transform( &world.mr_ball );
 515    rb_debug( &world.mr_ball, 0 );
 516 #endif
 517
 518    for( int i=0; i<vg_list_size(world.van_man); i++ )
 519    {
 520       traffic_drive( &world.van_man[i] );
 521       traffic_visualize_car( &world.van_man[i] );
 522    }
 523 }
 524
 525 /*
 526  * Rendering
 527  */
 528
 529 static void bind_terrain_textures(void)
 530 {
 531    vg_tex2d_bind( &tex_terrain_noise, 0 );
 532    vg_tex2d_bind( &tex_terrain_colours, 1 );
 533 }
 534
 535 static void render_world_vb( m4x4f projection, v3f camera )
 536 {
 537    m4x3f identity_matrix;
 538    m4x3_identity( identity_matrix );
 539
 540    shader_vblend_use();
 541    shader_vblend_uTexGarbage(0);
 542    shader_vblend_uTexGradients(1);
 543    shader_link_standard_ub( _shader_vblend.id, 2 );
 544    bind_terrain_textures();
 545
 546    shader_vblend_uPv( projection );
 547    shader_vblend_uMdl( identity_matrix );
 548    shader_vblend_uCamera( camera );
 549
 550    scene_bind( &world.geo );
 551    mdl_draw_submesh( &world.sm_geo_vb );
 552
 553    mesh_bind( &world.cars );
 554
 555    for( int i=0; i<vg_list_size(world.van_man); i++ )
 556    {
 557       shader_vblend_uMdl( world.van_man[i].transform );
 558       mdl_draw_submesh( &world.car_holden );
 559    }
 560 }
 561
 562 static void render_terrain( m4x4f projection, v3f camera )
 563 {
 564    m4x3f identity_matrix;
 565    m4x3_identity( identity_matrix );
 566
 567    shader_terrain_use();
 568    shader_terrain_uTexGarbage(0);
 569    shader_terrain_uTexGradients(1);
 570    shader_link_standard_ub( _shader_terrain.id, 2 );
 571    bind_terrain_textures();
 572
 573    shader_terrain_uPv( projection );
 574    shader_terrain_uMdl( identity_matrix );
 575    shader_terrain_uCamera( camera );
 576
 577    scene_bind( &world.geo );
 578    mdl_draw_submesh( &world.sm_geo_std_oob );
 579    mdl_draw_submesh( &world.sm_geo_std );
 580
 581    glDisable(GL_CULL_FACE);
 582    scene_bind( &world.foliage );
 583    scene_draw( &world.foliage );
 584    glEnable(GL_CULL_FACE);
 585 }
 586
 587 static void render_lowerdome( m4x3f camera )
 588 {
 589    m4x4f projection, full;
 590    pipeline_projection( projection, 0.4f, 1000.0f );
 591
 592    m4x3f inverse;
 593    m3x3_transpose( camera, inverse );
 594    v3_copy((v3f){0.0f,0.0f,0.0f}, inverse[3]);
 595    m4x3_expand( inverse, full );
 596    m4x4_mul( projection, full, full );
 597
 598    m4x3f identity_matrix;
 599    m4x3_identity( identity_matrix );
 600
 601    shader_planeinf_use();
 602    shader_planeinf_uMdl(identity_matrix);
 603    shader_planeinf_uPv(full);
 604    shader_planeinf_uCamera(camera[3]);
 605    shader_planeinf_uPlane( (v4f){0.0f,1.0f,0.0f, water_height()} );
 606
 607    mdl_draw_submesh( &world.dome_lower );
 608 }
 609
 610 static void render_sky(m4x3f camera)
 611 {
 612    m4x4f projection, full;
 613    pipeline_projection( projection, 0.4f, 1000.0f );
 614
 615    m4x3f inverse;
 616    m3x3_transpose( camera, inverse );
 617    v3_copy((v3f){0.0f,0.0f,0.0f}, inverse[3]);
 618    m4x3_expand( inverse, full );
 619    m4x4_mul( projection, full, full );
 620
 621    m4x3f identity_matrix;
 622    m4x3_identity( identity_matrix );
 623
 624    shader_sky_use();
 625    shader_sky_uMdl(identity_matrix);
 626    shader_sky_uPv(full);
 627    shader_sky_uTexGarbage(0);
 628    shader_sky_uTime( vg_time );
 629
 630    vg_tex2d_bind( &tex_terrain_noise, 0 );
 631
 632    glDepthMask( GL_FALSE );
 633    glDisable( GL_DEPTH_TEST );
 634
 635    mesh_bind( &world.skydome );
 636    mdl_draw_submesh( &world.dome_upper );
 637
 638    glEnable( GL_DEPTH_TEST );
 639    glDepthMask( GL_TRUE );
 640 }
 641
 642 static void render_world( m4x4f projection, m4x3f camera )
 643 {
 644    render_sky( camera );
 645    render_world_vb( projection, camera[3] );
 646    render_terrain( projection, camera[3] );
 647 }
 648
 649 static void render_world_depth( m4x4f projection, m4x3f camera )
 650 {
 651    m4x3f identity_matrix;
 652    m4x3_identity( identity_matrix );
 653
 654    shader_gpos_use();
 655    shader_gpos_uCamera( camera[3] );
 656    shader_gpos_uPv( projection );
 657    shader_gpos_uMdl( identity_matrix );
 658
 659    scene_bind( &world.geo );
 660    scene_draw( &world.geo );
 661
 662 #if 0
 663    glDisable(GL_CULL_FACE);
 664    scene_bind( &world.foliage );
 665    scene_draw( &world.foliage );
 666    glEnable(GL_CULL_FACE);
 667 #endif
 668 }
 669
 670 #endif /* WORLD_H */