world.h

   1 /*
   2  * Copyright (C) 2021-2022 Mt.ZERO Software, Harry Godden - All Rights Reserved
   3  */
   4
   5 #include "common.h"
   6
   7 VG_STATIC int ray_world( v3f pos, v3f dir, ray_hit *hit );
   8
   9 #ifndef WORLD_H
  10 #define WORLD_H
  11
  12 #include "vg/vg_loader.h"
  13
  14 #include "network.h"
  15 #include "network_msg.h"
  16 #include "scene.h"
  17 #include "render.h"
  18 #include "rigidbody.h"
  19 #include "bvh.h"
  20 #include "model.h"
  21
  22 #include "shaders/terrain.h"
  23 #include "shaders/sky.h"
  24 #include "shaders/standard.h"
  25 #include "shaders/vblend.h"
  26 #include "shaders/gpos.h"
  27 #include "shaders/blitcolour.h"
  28 #include "shaders/alphatest.h"
  29
  30 typedef struct teleport_gate teleport_gate;
  31
  32 enum { k_max_ui_segments = 8 };
  33
  34 enum { k_max_ui_elements = k_max_ui_segments };
  35 enum { k_max_element_verts = 10 };
  36 enum { k_max_element_indices = 20 };
  37
  38 enum { k_route_ui_max_verts = k_max_ui_elements*k_max_element_verts };
  39 enum { k_route_ui_max_indices = k_max_ui_elements*k_max_element_indices };
  40
  41 enum logic_type
  42 {
  43    k_logic_type_relay         = 1,
  44    k_logic_type_chance        = 2,
  45    k_logic_type_achievement   = 3
  46 };
  47
  48 enum geo_type
  49 {
  50    k_geo_type_solid = 0,
  51    k_geo_type_nonsolid = 1,
  52    k_geo_type_water = 2
  53 };
  54
  55 VG_STATIC struct gworld
  56 {
  57    /*
  58     * Allocated as system memory
  59     * --------------------------------------------------------------------------
  60     */
  61
  62    /* rendering */
  63    glmesh skydome;
  64    mdl_submesh dome_upper, dome_lower;
  65
  66    glmesh mesh_gate_surface;
  67
  68    double sky_time, sky_rate, sky_target_rate;
  69
  70    /* water rendering */
  71    struct
  72    {
  73       struct framebuffer fbreflect, fbdepth;
  74
  75       boxf depthbounds;
  76       int depth_computed;
  77
  78       float height;
  79       int enabled;
  80       v4f plane;
  81    }
  82    water;
  83
  84    /* split flap display */
  85    struct
  86    {
  87       mdl_submesh *sm_module, *sm_card;
  88       glmesh mesh_base, mesh_display;
  89
  90       u32 w, h;
  91       float *buffer;
  92    }
  93    sfd;
  94
  95    /* timing bars, fixed maximum amount */
  96    struct route_ui_bar
  97    {
  98       GLuint vao, vbo, ebo;
  99
 100       u32  indices_head;
 101       u32  vertex_head;
 102
 103       struct route_ui_segment
 104       {
 105          float length;
 106          u32 vertex_start, vertex_count,
 107              index_start, index_count, notches;
 108       }
 109       segments[k_max_ui_segments];
 110
 111       u32 segment_start, segment_count, fade_start, fade_count;
 112       double fade_timer_start;
 113       float xpos;
 114    }
 115    ui_bars[16];
 116
 117    v3f render_gate_pos;
 118    int active_route_board;
 119    int in_trigger;
 120
 121    /* This is a small flag we use to changelevel.
 122     * It will not be cleared until all sounds stop playing
 123     */
 124    int   switching_to_new_world;
 125    char  world_name[ 64 ];
 126
 127    /*
 128     * Dynamically allocated when world_load is called.
 129     *
 130     *                  the following arrays index somewhere into this linear
 131     *                  allocator
 132     *
 133     * (world_gen.h)
 134     * --------------------------------------------------------------------------
 135     */
 136    void *dynamic_vgl,
 137         *audio_vgl;  /* sub buffer of the audio buffer */
 138
 139    /*
 140     * Main world .mdl
 141     */
 142    mdl_context *meta;
 143
 144    /*
 145     * Materials / textures
 146     */
 147
 148    GLuint *textures;
 149    u32 texture_count;
 150
 151    struct world_material
 152    {
 153       mdl_material info;
 154       mdl_submesh sm_geo,
 155                   sm_no_collide;
 156    }
 157    * materials;
 158    u32 material_count;
 159
 160    /*
 161     * Named safe places to respawn
 162     */
 163    struct respawn_point
 164    {
 165       v3f co;
 166       v4f q;
 167       const char *name;
 168    }
 169    * spawns;
 170    u32 spawn_count;
 171
 172    /*
 173     * Audio player entities
 174     */
 175    struct world_audio_thing
 176    {
 177       v3f pos;
 178       float volume;
 179       u32 flags;
 180
 181       audio_player player;
 182       audio_clip temp_embedded_clip;
 183    }
 184    * audio_things;
 185    u32 audio_things_count;
 186
 187    /*
 188     * Relays
 189     */
 190    struct logic_relay
 191    {
 192       v3f pos;
 193
 194       struct relay_target
 195       {
 196          u32 sub_id;
 197          enum classtype classtype;
 198       }
 199       targets[4];
 200       u32 target_count;
 201    }
 202    * logic_relays;
 203    u32 relay_count;
 204
 205    /*
 206     * Box trigger entities
 207     */
 208    struct trigger_zone
 209    {
 210       m4x3f transform, inv_transform;
 211
 212       struct relay_target target;
 213    }
 214    * triggers;
 215    u32 trigger_count;
 216
 217    /*
 218     * Achievements
 219     */
 220    struct logic_achievement
 221    {
 222       v3f pos;
 223       const char *achievement_id;
 224       u32 achieved;
 225    }
 226    * logic_achievements;
 227    u32 achievement_count;
 228
 229
 230    /*
 231     * Routes (world_routes.h)
 232     * --------------------------------------------------------------------------
 233     */
 234    struct route_node
 235    {
 236       v3f co, right, up, h;
 237       u32 next[2];
 238
 239       u32 special_type, special_id, current_refs, ref_count;
 240       u32 route_ids[4];    /* Gates can be linked into up to four routes */
 241    }
 242    *nodes;
 243    u32 node_count;
 244
 245    struct route
 246    {
 247       u32 track_id;
 248       v4f colour;
 249
 250       u32 start;
 251       mdl_submesh sm;
 252
 253       int active;
 254       float factive;
 255
 256       double best_lap, latest_pass; /* Session */
 257
 258       m4x3f scoreboard_transform;
 259    }
 260    *routes;
 261    u32 route_count;
 262
 263    struct route_gate
 264    {
 265       struct teleport_gate
 266       {
 267          v3f co[2];
 268          v4f q[2];
 269          v2f dims;
 270
 271          m4x3f to_world, recv_to_world, transport;
 272       }
 273       gate;
 274
 275       u32 node_id;
 276
 277       struct route_timing
 278       {
 279          u32 version; /* Incremented on every teleport */
 280          double time;
 281       }
 282       timing;
 283    }
 284    *gates;
 285    u32 gate_count;
 286
 287    struct route_collector
 288    {
 289       struct route_timing timing;
 290    }
 291    *collectors;
 292    u32 collector_count;
 293
 294
 295    /* logic
 296     * ----------------------------------------------------
 297     */
 298
 299    u32 active_gate,
 300        current_run_version;
 301    double time, rewind_from, rewind_to, last_use;
 302
 303    /* world geometry */
 304    scene *scene_geo,
 305          *scene_no_collide,
 306          *scene_lines;
 307
 308    struct grind_edge
 309    {
 310       v3f p0, p1;
 311    }
 312    *grind_edges;
 313    u32 grind_edge_count;
 314
 315    /* spacial mappings */
 316    bh_tree *audio_bh,
 317            *trigger_bh,
 318            *geo_bh,
 319            *grind_bh;
 320
 321    /* graphics */
 322    glmesh mesh_route_lines;
 323
 324    glmesh mesh_geo,
 325           mesh_no_collide,
 326           mesh_water;
 327
 328    mdl_submesh sm_foliage_main;
 329    rigidbody rb_geo;
 330 }
 331 world;
 332
 333
 334 /*
 335  * API
 336  */
 337
 338 VG_STATIC int ray_hit_is_ramp( ray_hit *hit );
 339 VG_STATIC struct world_material *ray_hit_material( ray_hit *hit );
 340 VG_STATIC void ray_world_get_tri( ray_hit *hit, v3f tri[3] );
 341 VG_STATIC int ray_world( v3f pos, v3f dir, ray_hit *hit );
 342
 343 /*
 344  * Submodules
 345  */
 346
 347 #include "world_routes.h"
 348 #include "world_sfd.h"
 349 #include "world_render.h"
 350 #include "world_water.h"
 351 #include "world_gen.h"
 352 #include "world_gate.h"
 353
 354 /*
 355  * -----------------------------------------------------------------------------
 356  *                                    Events
 357  * -----------------------------------------------------------------------------
 358  */
 359
 360 VG_STATIC int world_stop_sound( int argc, const char *argv[] )
 361 {
 362    /*
 363     * None of our world audio runs as one shots, they always have a player.
 364     * Therefore it is safe to delete clip data after the players are
 365     * disconnected
 366     */
 367    audio_lock();
 368    for( int i=0; i<world.audio_things_count; i++ )
 369    {
 370       struct world_audio_thing *at = &world.audio_things[i];
 371
 372       if( audio_player_is_playing( &at->player ) )
 373       {
 374          u32 cflags = audio_player_get_flags( &at->player );
 375          audio_player_set_flags( &at->player, cflags | AUDIO_FLAG_KILL );
 376       }
 377    }
 378    audio_unlock();
 379
 380    return 0;
 381 }
 382
 383 VG_STATIC int world_change_world( int argc, const char *argv[] )
 384 {
 385    if( argc == 0 )
 386    {
 387       vg_info( "%s\n", world.world_name );
 388       return 0;
 389    }
 390    else
 391    {
 392       vg_info( "Switching world...\n" );
 393       strcpy( world.world_name, argv[0] );
 394       world.switching_to_new_world = 1;
 395       world_stop_sound( 0, NULL );
 396    }
 397
 398    return 0;
 399 }
 400
 401 VG_STATIC void world_init(void)
 402 {
 403    vg_var_push( (struct vg_var){
 404       .name = "water_enable",
 405       .data = &world.water.enabled,
 406       .data_type = k_var_dtype_i32,
 407       .opt_i32 = { .min=0, .max=1, .clamp=1 },
 408       .persistent = 0
 409    });
 410
 411         vg_function_push( (struct vg_cmd)
 412    {
 413                 .name = "world_stop_sound",
 414                 .function = world_stop_sound
 415         });
 416
 417         vg_function_push( (struct vg_cmd)
 418    {
 419                 .name = "world",
 420                 .function = world_change_world
 421         });
 422
 423    world.sky_rate = 1.0;
 424    world.sky_target_rate = 1.0;
 425
 426    shader_terrain_register();
 427    shader_sky_register();
 428    shader_gpos_register();
 429    shader_blitcolour_register();
 430    shader_alphatest_register();
 431
 432    vg_info( "Loading world resources\n" );
 433
 434    vg_linear_clear( vg_mem.scratch );
 435    mdl_context *msky = mdl_load_full( vg_mem.scratch, "models/rs_skydome.mdl" );
 436
 437    mdl_node *nupper = mdl_node_from_name( msky, "dome_complete" );
 438    world.dome_upper = *mdl_node_submesh( msky, nupper, 0 );
 439
 440    vg_acquire_thread_sync();
 441    {
 442       mdl_unpack_glmesh( msky, &world.skydome );
 443    }
 444    vg_release_thread_sync();
 445
 446    /* Other systems */
 447    vg_info( "Loading other world systems\n" );
 448
 449    vg_loader_step( world_render_init, NULL );
 450    vg_loader_step( world_sfd_init, NULL );
 451    vg_loader_step( world_water_init, NULL );
 452    vg_loader_step( world_gates_init, NULL );
 453    vg_loader_step( world_routes_init, NULL );
 454
 455    /* Allocate dynamic world memory arena */
 456    u32 max_size = 76*1024*1024;
 457    world.dynamic_vgl = vg_create_linear_allocator( vg_mem.rtmemory, max_size,
 458                                                    VG_MEMORY_SYSTEM );
 459 }
 460
 461 VG_STATIC void world_audio_init(void)
 462 {
 463    u32 size = vg_linear_remaining( vg_audio.audio_pool )
 464                - sizeof(vg_linear_allocator);
 465
 466    world.audio_vgl = vg_create_linear_allocator( vg_audio.audio_pool,
 467                                                  size, VG_MEMORY_SYSTEM );
 468 }
 469
 470 VG_STATIC void world_trigger_achievement( u32 uid )
 471 {
 472    struct logic_achievement *ach = &world.logic_achievements[ uid ];
 473
 474    if( ach->achieved )
 475       return;
 476
 477    steam_set_achievement( ach->achievement_id );
 478    steam_store_achievements();
 479
 480    ach->achieved = 1;
 481 }
 482
 483 VG_STATIC void world_run_relay( struct relay_target *rt );
 484 VG_STATIC void world_trigger_relay( u32 uid )
 485 {
 486    struct logic_relay *relay = &world.logic_relays[ uid ];
 487
 488    for( int i=0; i<relay->target_count; i++ )
 489    {
 490       world_run_relay( &relay->targets[i] );
 491    }
 492 }
 493
 494 VG_STATIC void world_trigger_audio( u32 uid )
 495 {
 496    struct world_audio_thing *wat = &world.audio_things[ uid ];
 497
 498    audio_lock();
 499    audio_player_playclip( &wat->player,
 500                           &wat->temp_embedded_clip );
 501    audio_unlock();
 502 }
 503
 504 VG_STATIC void world_run_relay( struct relay_target *rt )
 505 {
 506    struct entity_instruction
 507    {
 508       enum classtype classtype;
 509       void (*p_trigger)( u32 uid );
 510    }
 511    entity_instructions[] =
 512    {
 513       { k_classtype_logic_achievement, world_trigger_achievement },
 514       { k_classtype_logic_relay, world_trigger_relay },
 515       { k_classtype_audio, world_trigger_audio }
 516    };
 517
 518    for( int i=0; i<vg_list_size(entity_instructions); i++ )
 519    {
 520       struct entity_instruction *instr = &entity_instructions[i];
 521
 522       if( instr->classtype == rt->classtype )
 523       {
 524          instr->p_trigger( rt->sub_id );
 525          return;
 526       }
 527    }
 528
 529    vg_error( "Don't know how to trigger classtype %d\n", rt->classtype );
 530 }
 531
 532 VG_STATIC void world_update( v3f pos )
 533 {
 534    if( world.switching_to_new_world )
 535    {
 536       int all_stopped = 1;
 537
 538       audio_lock();
 539       for( int i=0; i<world.audio_things_count; i++ )
 540       {
 541          struct world_audio_thing *at = &world.audio_things[i];
 542
 543          if( audio_player_is_playing( &at->player ) )
 544          {
 545             all_stopped = 0;
 546             break;
 547          }
 548       }
 549       audio_unlock();
 550
 551       if( all_stopped )
 552       {
 553          world.switching_to_new_world = 0;
 554          world_unload();
 555          vg_loader_start( world_load );
 556          return;
 557       }
 558    }
 559
 560    world.sky_time += world.sky_rate * vg.time_delta;
 561    world.sky_rate = vg_lerp( world.sky_rate, world.sky_target_rate,
 562                                  vg.time_delta * 5.0 );
 563
 564    world_routes_update();
 565 #if 0
 566    world_routes_debug();
 567 #endif
 568
 569    if( world.route_count > 0 )
 570    {
 571       int closest = 0;
 572       float min_dist = INFINITY;
 573
 574       for( int i=0; i<world.route_count; i++ )
 575       {
 576          float d = v3_dist2( world.routes[i].scoreboard_transform[3], pos );
 577
 578          if( d < min_dist )
 579          {
 580             min_dist = d;
 581             closest = i;
 582          }
 583       }
 584
 585       if( (world.active_route_board != closest) || network_scores_updated )
 586       {
 587          network_scores_updated = 0;
 588          world.active_route_board = closest;
 589
 590          struct route *route = &world.routes[closest];
 591
 592          u32 id = route->track_id;
 593
 594          if( id != 0xffffffff )
 595          {
 596             struct netmsg_board *local_board =
 597                &scoreboard_client_data.boards[id];
 598
 599             for( int i=0; i<13; i++ )
 600             {
 601                sfd_encode( i, &local_board->data[27*i] );
 602             }
 603          }
 604       }
 605    }
 606
 607    int in_trigger = 0;
 608    for( int i=0; i<world.trigger_count; i++ )
 609    {
 610       struct trigger_zone *zone = &world.triggers[i];
 611
 612       v3f local;
 613       m4x3_mulv( zone->inv_transform, pos, local );
 614
 615       if( (fabsf(local[0]) <= 1.0f) &&
 616           (fabsf(local[1]) <= 1.0f) &&
 617           (fabsf(local[2]) <= 1.0f) )
 618       {
 619          in_trigger = 1;
 620
 621          if( !world.in_trigger )
 622          {
 623             world_run_relay( &zone->target );
 624          }
 625       }
 626
 627       vg_line_boxf_transformed( zone->transform, (boxf){{-1.0f,-1.0f,-1.0f},
 628                                                         { 1.0f, 1.0f, 1.0f}},
 629                                                         0xff00ff00 );
 630    }
 631
 632    world.in_trigger = in_trigger;
 633    sfd_update();
 634 }
 635
 636 /*
 637  * -----------------------------------------------------------------------------
 638  *                              API implementation
 639  * -----------------------------------------------------------------------------
 640  */
 641
 642 VG_STATIC void ray_world_get_tri( ray_hit *hit, v3f tri[3] )
 643 {
 644    for( int i=0; i<3; i++ )
 645       v3_copy( world.scene_geo->arrvertices[ hit->tri[i] ].co, tri[i] );
 646 }
 647
 648 VG_STATIC int ray_world( v3f pos, v3f dir, ray_hit *hit )
 649 {
 650    return scene_raycast( world.scene_geo, world.geo_bh, pos, dir, hit );
 651 }
 652
 653 VG_STATIC struct world_material *world_tri_index_material( u32 index )
 654 {
 655    for( int i=1; i<world.material_count; i++ )
 656    {
 657       struct world_material *mat = &world.materials[i];
 658
 659       if( (index >= mat->sm_geo.vertex_start) &&
 660           (index  < mat->sm_geo.vertex_start+mat->sm_geo.vertex_count ) )
 661       {
 662          return mat;
 663       }
 664    }
 665
 666    /* error material */
 667    return &world.materials[0];
 668 }
 669
 670 VG_STATIC struct world_material *world_contact_material( rb_ct *ct )
 671 {
 672    return world_tri_index_material( ct->element_id );
 673 }
 674
 675 VG_STATIC struct world_material *ray_hit_material( ray_hit *hit )
 676 {
 677    return world_tri_index_material( hit->tri[0] );
 678 }
 679
 680 #endif /* WORLD_H */