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