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    bh_tree bhcubes;
  52
  53    /* Rendering & geometry */
  54    scene geo, foliage, props;
  55    mdl_submesh sm_surface, sm_other;
  56
  57    glmesh skybox, skydome;
  58    mdl_submesh dome_upper, dome_lower;
  59
  60    glmesh cars;
  61    mdl_submesh car_holden;
  62 }
  63 world;
  64
  65 vg_tex2d tex_terrain_colours = { .path = "textures/gradients.qoi",
  66                                  .flags = VG_TEXTURE_CLAMP|VG_TEXTURE_NEAREST };
  67
  68 vg_tex2d tex_terrain_noise = { .path = "textures/garbage.qoi",
  69                                  .flags = VG_TEXTURE_NEAREST };
  70
  71 static void ray_world_get_tri( ray_hit *hit, v3f tri[3] )
  72 {
  73    for( int i=0; i<3; i++ )
  74       v3_copy( world.geo.verts[ hit->tri[i] ].co, tri[i] );
  75 }
  76
  77 static int ray_world( v3f pos, v3f dir, ray_hit *hit )
  78 {
  79    return scene_raycast( &world.geo, pos, dir, hit );
  80 }
  81
  82 static int ray_hit_is_ramp( ray_hit *hit )
  83 {
  84    return hit->tri[0] < world.sm_surface.vertex_count;
  85 }
  86
  87 static void world_register(void)
  88 {
  89    shader_terrain_register();
  90    shader_sky_register();
  91    shader_planeinf_register();
  92    shader_gpos_register();
  93    shader_fscolour_register();
  94 }
  95
  96 static void world_free(void)
  97 {
  98    /* TODO.. */
  99 }
 100
 101 static void render_world_depth( m4x4f projection, m4x3f camera );
 102
 103 static void add_all_if_material( scene *pscene, mdl_header *mdl, u32 id )
 104 {
 105    for( int i=0; i<mdl->node_count; i++ )
 106    {
 107       mdl_node *pnode = mdl_node_from_id( mdl, i );
 108
 109       for( int j=0; j<pnode->submesh_count; j++ )
 110       {
 111          mdl_submesh *sm = mdl_node_submesh( mdl, pnode, j );
 112
 113          if( sm->material_id == id )
 114          {
 115             m4x3f transform;
 116             mdl_node_transform( pnode, transform );
 117             scene_add_submesh( pscene, mdl, sm, transform );
 118          }
 119       }
 120    }
 121 }
 122
 123 static void world_apply_foliage(void)
 124 {
 125    scene_init( &world.foliage );
 126    mdl_header *mfoliage = mdl_load("models/rs_foliage.mdl");
 127
 128    v3f volume;
 129    v3_sub( world.geo.bbx[1], world.geo.bbx[0], volume );
 130    volume[1] = 1.0f;
 131
 132    m4x3f transform;
 133    mdl_node *mblob = mdl_node_from_name( mfoliage, "blob" );
 134    mdl_submesh *sm_blob = mdl_node_submesh( mfoliage, mblob, 0 );
 135
 136    for( int i=0;i<100000;i++ )
 137    {
 138       v3f pos;
 139       v3_mul( volume, (v3f){ vg_randf(), 1000.0f, vg_randf() }, pos );
 140       pos[1] = 1000.0f;
 141       v3_add( pos, world.geo.bbx[0], pos );
 142
 143       ray_hit hit;
 144       hit.dist = INFINITY;
 145
 146       if( ray_world( pos, (v3f){0.0f,-1.0f,0.0f}, &hit ))
 147       {
 148          if( hit.normal[1] > 0.8f && !ray_hit_is_ramp(&hit) &&
 149              hit.pos[1] > water_height()+10.0f )
 150          {
 151             v4f qsurface, qrandom;
 152             v3f axis;
 153
 154             v3_cross( (v3f){0.0f,1.0f,0.0f}, hit.normal, axis );
 155
 156             float angle = v3_dot(hit.normal,(v3f){0.0f,1.0f,0.0f});
 157             q_axis_angle( qsurface, axis, angle );
 158             q_axis_angle( qrandom, (v3f){0.0f,1.0f,0.0f}, vg_randf()*VG_TAUf );
 159             q_mul( qsurface, qrandom, qsurface );
 160             q_m3x3( qsurface, transform );
 161
 162             v3_copy( hit.pos, transform[3] );
 163             scene_add_submesh( &world.foliage, mfoliage, sm_blob, transform);
 164          }
 165       }
 166    }
 167
 168    scene_upload( &world.foliage );
 169    free( mfoliage );
 170 }
 171
 172 static void world_load(void)
 173 {
 174    mdl_header *mworld = mdl_load( "models/mp_dev.mdl" );
 175
 176    world.spawn_count = 0;
 177    world.gate_count = 0;
 178    world.rb_count = 0;
 179    world.traffic_count = 0;
 180
 181    scene_init( &world.geo );
 182    scene_init( &world.props );
 183
 184    /*
 185     * Compile meshes into the world scenes
 186     */
 187    u32 mat_surf = 0,
 188        mat_surf_oob = 0,
 189        mat_vertex_blend = 0;
 190
 191    for( int i=1; i<mworld->material_count; i++ )
 192    {
 193       mdl_material *mat = mdl_material_from_id( mworld, i );
 194       const char *mat_name = mdl_pstr( mworld, mat->pstr_name );
 195
 196       vg_info( "%d %s\n", mat->pstr_name, mat_name );
 197
 198       if( !strcmp( "surf", mat_name ))
 199          mat_surf = i;
 200       else if( !strcmp( "surf_oob", mat_name ))
 201          mat_surf_oob = i;
 202       else if( !strcmp( "vertex_blend", mat_name ))
 203          mat_vertex_blend = i;
 204    }
 205
 206    if( mat_surf )
 207       add_all_if_material( &world.geo, mworld, mat_surf );
 208    if( mat_vertex_blend )
 209       add_all_if_material( &world.geo, mworld, mat_vertex_blend );
 210
 211
 212    scene_copy_slice( &world.geo, &world.sm_surface );
 213
 214    if( mat_surf_oob )
 215       add_all_if_material( &world.geo, mworld, mat_surf_oob );
 216    else
 217       vg_warn( "No OOB surface\n" );
 218
 219    scene_bh_create( &world.geo );
 220    scene_upload( &world.geo );
 221
 222    if( mat_vertex_blend )
 223       add_all_if_material( &world.props, mworld, mat_vertex_blend );
 224
 225    /* TODO  bvh? */
 226
 227    /*
 228     * Process entities
 229     */
 230    for( int i=0; i<mworld->node_count; i++ )
 231    {
 232       mdl_node *pnode = mdl_node_from_id( mworld, i );
 233
 234       if( pnode->classtype == k_classtype_none )
 235       {}
 236       else if( pnode->classtype == k_classtype_gate )
 237       {
 238          struct classtype_gate *entgate = mdl_get_entdata( mworld, pnode );
 239
 240          if( entgate->target )
 241          {
 242             mdl_node *pother = mdl_node_from_id( mworld, entgate->target );
 243
 244             teleport_gate *gate = &world.gates[ world.gate_count ++ ];
 245
 246             v3_copy( pnode->co,  gate->co[0] );
 247             v3_copy( pother->co, gate->co[1] );
 248             v4_copy( pnode->q,   gate->q[0] );
 249             v4_copy( pother->q,  gate->q[1] );
 250             v2_copy( pnode->s,   gate->dims );
 251
 252             gate_transform_update( gate );
 253          }
 254       }
 255       else if( pnode->classtype == k_classtype_block )
 256       {
 257          struct classtype_block *block = mdl_get_entdata( mworld, pnode );
 258
 259          m4x3f transform;
 260          mdl_node_transform( pnode, transform );
 261
 262          rigidbody *rb = &world.temp_rbs[ world.rb_count ++ ];
 263
 264          box_copy( block->bbx, rb->bbx ); /* TODO: apply scale */
 265          v3_copy( pnode->co, rb->co );
 266          rb_init( rb );
 267          v4_copy( pnode->q, rb->q );
 268          rb_update_transform( rb );
 269       }
 270       else if( pnode->classtype == k_classtype_spawn )
 271       {
 272          struct respawn_point *rp = &world.spawns[ world.spawn_count ++ ];
 273
 274          v3_copy( pnode->co, rp->co );
 275          v4_copy( pnode->q, rp->q );
 276          strcpy( rp->name, mdl_pstr( mworld, pnode->pstr_name ) );
 277       }
 278       else if( pnode->classtype == k_classtype_water )
 279       {
 280          if( wrender.enabled )
 281          {
 282             vg_warn( "Multiple water surfaces in level! ('%s')\n",
 283                   mdl_pstr( mworld, pnode->pstr_name ));
 284             continue;
 285          }
 286
 287          mdl_submesh *sm = mdl_node_submesh( mworld, pnode, 0 );
 288
 289          if( sm )
 290          {
 291             glmesh surf;
 292             mdl_unpack_submesh( mworld, &surf, sm );
 293             water_init();
 294             water_set_surface( &surf, pnode->co[1] );
 295          }
 296       }
 297       else if( pnode->classtype == k_classtype_car_path )
 298       {
 299          struct classtype_car_path *p = mdl_get_entdata( mworld, pnode );
 300          traffic_node *tn = &world.traffic[ world.traffic_count ];
 301          tn->mn_next = NULL;
 302          tn->mn_next1 = NULL;
 303
 304          if( p->target ) tn->mn_next = mdl_node_from_id( mworld, p->target );
 305          if( p->target1 ) tn->mn_next1 = mdl_node_from_id( mworld, p->target1 );
 306
 307          m4x3f transform;
 308          mdl_node_transform( pnode, transform );
 309          m3x3_mulv( transform, (v3f){1.0f,0.0f,0.0f}, tn->h );
 310          v3_copy( transform[3], tn->co );
 311
 312          pnode->sub_uid = world.traffic_count ++;
 313       }
 314    }
 315
 316    traffic_finalize( world.traffic, world.traffic_count );
 317    for( int i=0; i<vg_list_size(world.van_man); i++ )
 318       world.van_man[i].current =&world.traffic[vg_randint(world.traffic_count)];
 319
 320    scene_upload( &world.props );
 321
 322    bh_create( &world.bhcubes,
 323          &bh_system_rigidbodies, world.temp_rbs, world.rb_count );
 324
 325    world_apply_foliage();
 326    free( mworld );
 327
 328    /*
 329     * Rendering the depth map
 330     */
 331    m4x4f ortho;
 332    m4x3f camera;
 333
 334    v3f extent;
 335    v3_sub( world.geo.bbx[1], world.geo.bbx[0], extent );
 336
 337    float fl = world.geo.bbx[0][0],
 338          fr = world.geo.bbx[1][0],
 339          fb = world.geo.bbx[0][2],
 340          ft = world.geo.bbx[1][2],
 341          rl = 1.0f / (fr-fl),
 342          tb = 1.0f / (ft-fb);
 343
 344    m4x4_zero( ortho );
 345         ortho[0][0] = 2.0f * rl;
 346         ortho[2][1] = 2.0f * tb;
 347    ortho[3][0] = (fr + fl) * -rl;
 348    ortho[3][1] = (ft + fb) * -tb;
 349    ortho[3][3] = 1.0f;
 350    m4x3_identity( camera );
 351
 352    glViewport( 0, 0, 1024, 1024 );
 353    glDisable(GL_DEPTH_TEST);
 354    glBindFramebuffer( GL_FRAMEBUFFER, gpipeline.fb_depthmap );
 355    shader_fscolour_use();
 356    shader_fscolour_uColour( (v4f){-9999.0f,-9999.0f,-9999.0f,-9999.0f} );
 357    render_fsquad();
 358
 359    glEnable(GL_BLEND);
 360    glBlendFunc(GL_ONE, GL_ONE);
 361    glBlendEquation(GL_MAX);
 362    render_world_depth( ortho, camera );
 363    glDisable(GL_BLEND);
 364    glEnable(GL_DEPTH_TEST);
 365
 366    /*
 367     * TODO: World settings entity
 368     */
 369    struct ub_world_lighting *winfo = &gpipeline.ub_world_lighting;
 370    v4_copy( wrender.plane, winfo->g_water_plane );
 371
 372    v4f bounds;
 373    bounds[0] = world.geo.bbx[0][0];
 374    bounds[1] = world.geo.bbx[0][2];
 375    bounds[2] = 1.0f/ (world.geo.bbx[1][0]-world.geo.bbx[0][0]);
 376    bounds[3] = 1.0f/ (world.geo.bbx[1][2]-world.geo.bbx[0][2]);
 377    v4_copy( bounds, winfo->g_depth_bounds );
 378
 379    winfo->g_water_fog = 0.04f;
 380    render_update_lighting_ub();
 381
 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 static void world_update(void)
 408 {
 409    for( int i=0; i<vg_list_size(world.van_man); i++ )
 410    {
 411       traffic_drive( &world.van_man[i] );
 412       traffic_visualize_car( &world.van_man[i] );
 413    }
 414 }
 415
 416 /*
 417  * Rendering
 418  */
 419
 420 static void bind_terrain_textures(void)
 421 {
 422    vg_tex2d_bind( &tex_terrain_noise, 0 );
 423    vg_tex2d_bind( &tex_terrain_colours, 1 );
 424 }
 425
 426 static void render_props( m4x4f projection, v3f camera )
 427 {
 428    m4x3f identity_matrix;
 429    m4x3_identity( identity_matrix );
 430
 431    shader_vblend_use();
 432    shader_vblend_uTexGarbage(0);
 433    shader_vblend_uTexGradients(1);
 434    shader_link_standard_ub( _shader_vblend.id, 2 );
 435    bind_terrain_textures();
 436
 437    shader_vblend_uPv( projection );
 438    shader_vblend_uMdl( identity_matrix );
 439    shader_vblend_uCamera( camera );
 440
 441    scene_bind( &world.props );
 442    scene_draw( &world.props );
 443
 444    mesh_bind( &world.cars );
 445
 446    for( int i=0; i<vg_list_size(world.van_man); i++ )
 447    {
 448       shader_vblend_uMdl( world.van_man[i].transform );
 449       mdl_draw_submesh( &world.car_holden );
 450    }
 451 }
 452
 453 static void render_terrain( m4x4f projection, v3f camera )
 454 {
 455    m4x3f identity_matrix;
 456    m4x3_identity( identity_matrix );
 457
 458    shader_terrain_use();
 459    shader_terrain_uTexGarbage(0);
 460    shader_terrain_uTexGradients(1);
 461    shader_link_standard_ub( _shader_terrain.id, 2 );
 462    bind_terrain_textures();
 463
 464    shader_terrain_uPv( projection );
 465    shader_terrain_uMdl( identity_matrix );
 466    shader_terrain_uCamera( camera );
 467
 468    scene_bind( &world.geo );
 469    scene_draw( &world.geo );
 470
 471    glDisable(GL_CULL_FACE);
 472    scene_bind( &world.foliage );
 473    scene_draw( &world.foliage );
 474    glEnable(GL_CULL_FACE);
 475 }
 476
 477 static void render_lowerdome( m4x3f camera )
 478 {
 479    m4x4f projection, full;
 480    pipeline_projection( projection, 0.4f, 1000.0f );
 481
 482    m4x3f inverse;
 483    m3x3_transpose( camera, inverse );
 484    v3_copy((v3f){0.0f,0.0f,0.0f}, inverse[3]);
 485    m4x3_expand( inverse, full );
 486    m4x4_mul( projection, full, full );
 487
 488    m4x3f identity_matrix;
 489    m4x3_identity( identity_matrix );
 490
 491    shader_planeinf_use();
 492    shader_planeinf_uMdl(identity_matrix);
 493    shader_planeinf_uPv(full);
 494    shader_planeinf_uCamera(camera[3]);
 495    shader_planeinf_uPlane( (v4f){0.0f,1.0f,0.0f, water_height()} );
 496
 497    mdl_draw_submesh( &world.dome_lower );
 498 }
 499
 500 static void render_sky(m4x3f camera)
 501 {
 502    m4x4f projection, full;
 503    pipeline_projection( projection, 0.4f, 1000.0f );
 504
 505    m4x3f inverse;
 506    m3x3_transpose( camera, inverse );
 507    v3_copy((v3f){0.0f,0.0f,0.0f}, inverse[3]);
 508    m4x3_expand( inverse, full );
 509    m4x4_mul( projection, full, full );
 510
 511    m4x3f identity_matrix;
 512    m4x3_identity( identity_matrix );
 513
 514    shader_sky_use();
 515    shader_sky_uMdl(identity_matrix);
 516    shader_sky_uPv(full);
 517    shader_sky_uTexGarbage(0);
 518    shader_sky_uTime( vg_time );
 519
 520    vg_tex2d_bind( &tex_terrain_noise, 0 );
 521
 522    glDepthMask( GL_FALSE );
 523    glDisable( GL_DEPTH_TEST );
 524
 525    mesh_bind( &world.skydome );
 526    mdl_draw_submesh( &world.dome_upper );
 527
 528    glEnable( GL_DEPTH_TEST );
 529    glDepthMask( GL_TRUE );
 530 }
 531
 532 static void render_world( m4x4f projection, m4x3f camera )
 533 {
 534    render_sky( camera );
 535    render_props( projection, camera[3] );
 536    render_terrain( projection, camera[3] );
 537 }
 538
 539 static void render_world_depth( m4x4f projection, m4x3f camera )
 540 {
 541    m4x3f identity_matrix;
 542    m4x3_identity( identity_matrix );
 543
 544    shader_gpos_use();
 545    shader_gpos_uCamera( camera[3] );
 546    shader_gpos_uPv( projection );
 547    shader_gpos_uMdl( identity_matrix );
 548
 549    scene_bind( &world.geo );
 550    scene_draw( &world.geo );
 551
 552 #if 0
 553    glDisable(GL_CULL_FACE);
 554    scene_bind( &world.foliage );
 555    scene_draw( &world.foliage );
 556    glEnable(GL_CULL_FACE);
 557 #endif
 558
 559    scene_bind( &world.props );
 560    scene_draw( &world.props );
 561 }
 562
 563 #endif /* WORLD_H */