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