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/planeinf.h"
  25 #include "shaders/standard.h"
  26 #include "shaders/vblend.h"
  27 #include "shaders/gpos.h"
  28 #include "shaders/fscolour.h"
  29 #include "shaders/alphatest.h"
  30
  31 typedef struct teleport_gate teleport_gate;
  32
  33 enum { k_max_ui_segments = 8 };
  34
  35 enum { k_max_ui_elements = k_max_ui_segments };
  36 enum { k_max_element_verts = 10 };
  37 enum { k_max_element_indices = 20 };
  38
  39 enum { k_route_ui_max_verts = k_max_ui_elements*k_max_element_verts };
  40 enum { k_route_ui_max_indices = k_max_ui_elements*k_max_element_indices };
  41
  42 enum logic_type
  43 {
  44    k_logic_type_relay         = 1,
  45    k_logic_type_chance        = 2,
  46    k_logic_type_achievement   = 3
  47 };
  48
  49 enum geo_type
  50 {
  51    k_geo_type_solid = 0,
  52    k_geo_type_nonsolid = 1,
  53    k_geo_type_water = 2
  54 };
  55
  56 enum material_flag
  57 {
  58    k_material_flag_skate_surface = 0x1,
  59    k_material_flag_collision = 0x2
  60 };
  61
  62 VG_STATIC struct gworld
  63 {
  64    /*
  65     * Allocated as system memory
  66     * --------------------------------------------------------------------------
  67     */
  68
  69    /* rendering */
  70    glmesh skydome;
  71    mdl_submesh dome_upper, dome_lower;
  72
  73    glmesh mesh_gate_surface;
  74
  75    double sky_time, sky_rate, sky_target_rate;
  76
  77    /* water rendering */
  78    struct
  79    {
  80       struct framebuffer fbreflect, fbdepth;
  81
  82       boxf depthbounds;
  83       int depth_computed;
  84
  85       float height;
  86       int enabled;
  87       v4f plane;
  88    }
  89    water;
  90
  91    /* split flap display */
  92    struct
  93    {
  94       mdl_submesh *sm_module, *sm_card;
  95       glmesh mesh_base, mesh_display;
  96
  97       u32 w, h;
  98       float *buffer;
  99    }
 100    sfd;
 101
 102    /* timing bars, fixed maximum amount */
 103    struct route_ui_bar
 104    {
 105       GLuint vao, vbo, ebo;
 106
 107       u32  indices_head;
 108       u32  vertex_head;
 109
 110       struct route_ui_segment
 111       {
 112          float length;
 113          u32 vertex_start, vertex_count,
 114              index_start, index_count, notches;
 115       }
 116       segments[k_max_ui_segments];
 117
 118       u32 segment_start, segment_count, fade_start, fade_count;
 119       double fade_timer_start;
 120       float xpos;
 121    }
 122    ui_bars[16];
 123
 124    v3f render_gate_pos;
 125    int active_route_board;
 126    int in_trigger;
 127
 128    /* This is a small flag we use to changelevel.
 129     * It will not be cleared until all sounds stop playing
 130     */
 131    int   switching_to_new_world;
 132    char  world_name[ 64 ];
 133
 134    /*
 135     * Dynamically allocated when world_load is called.
 136     *
 137     *                  the following arrays index somewhere into this linear
 138     *                  allocator
 139     *
 140     * (world_gen.h)
 141     * --------------------------------------------------------------------------
 142     */
 143    void *dynamic_vgl,
 144         *audio_vgl;  /* sub buffer of the audio buffer */
 145
 146    /*
 147     * Main world .mdl
 148     */
 149    mdl_context *meta;
 150
 151    /*
 152     * Materials / textures
 153     */
 154
 155    GLuint *textures;
 156    u32 texture_count;
 157
 158    struct world_material
 159    {
 160       mdl_material info;
 161       mdl_submesh sm_geo,
 162                   sm_no_collide;
 163    }
 164    * materials;
 165    u32 material_count;
 166
 167    /*
 168     * Named safe places to respawn
 169     */
 170    struct respawn_point
 171    {
 172       v3f co;
 173       v4f q;
 174       const char *name;
 175    }
 176    * spawns;
 177    u32 spawn_count;
 178
 179    /*
 180     * Audio player entities
 181     */
 182    struct world_audio_thing
 183    {
 184       v3f pos;
 185       float volume;
 186       u32 flags;
 187
 188       audio_player player;
 189       audio_clip temp_embedded_clip;
 190    }
 191    * audio_things;
 192    u32 audio_things_count;
 193
 194    /*
 195     * Relays
 196     */
 197    struct logic_relay
 198    {
 199       v3f pos;
 200
 201       struct relay_target
 202       {
 203          u32 sub_id;
 204          enum classtype classtype;
 205       }
 206       targets[4];
 207       u32 target_count;
 208    }
 209    * logic_relays;
 210    u32 relay_count;
 211
 212    /*
 213     * Box trigger entities
 214     */
 215    struct trigger_zone
 216    {
 217       m4x3f transform, inv_transform;
 218
 219       struct relay_target target;
 220    }
 221    * triggers;
 222    u32 trigger_count;
 223
 224    /*
 225     * Achievements
 226     */
 227    struct logic_achievement
 228    {
 229       v3f pos;
 230       const char *achievement_id;
 231       u32 achieved;
 232    }
 233    * logic_achievements;
 234    u32 achievement_count;
 235
 236
 237    /*
 238     * Routes (world_routes.h)
 239     * --------------------------------------------------------------------------
 240     */
 241    struct route_node
 242    {
 243       v3f co, right, up, h;
 244       u32 next[2];
 245
 246       u32 special_type, special_id, current_refs, ref_count;
 247       u32 route_ids[4];    /* Gates can be linked into up to four routes */
 248    }
 249    *nodes;
 250    u32 node_count;
 251
 252    struct route
 253    {
 254       u32 track_id;
 255       v4f colour;
 256
 257       u32 start;
 258       mdl_submesh sm;
 259
 260       int active;
 261       float factive;
 262
 263       double best_lap, latest_pass; /* Session */
 264
 265       m4x3f scoreboard_transform;
 266    }
 267    *routes;
 268    u32 route_count;
 269
 270    struct route_gate
 271    {
 272       struct teleport_gate
 273       {
 274          v3f co[2];
 275          v4f q[2];
 276          v2f dims;
 277
 278          m4x3f to_world, recv_to_world, transport;
 279       }
 280       gate;
 281
 282       u32 node_id;
 283
 284       struct route_timing
 285       {
 286          u32 version; /* Incremented on every teleport */
 287          double time;
 288       }
 289       timing;
 290    }
 291    *gates;
 292    u32 gate_count;
 293
 294    struct route_collector
 295    {
 296       struct route_timing timing;
 297    }
 298    *collectors;
 299    u32 collector_count;
 300
 301
 302    /* logic
 303     * ----------------------------------------------------
 304     */
 305
 306    u32 active_gate,
 307        current_run_version;
 308    double time, rewind_from, rewind_to, last_use;
 309
 310    /* world geometry */
 311    scene *scene_geo,
 312          *scene_no_collide,
 313          *scene_lines;
 314
 315    /* spacial mappings */
 316    bh_tree *audio_bh,
 317            *trigger_bh,
 318            *geo_bh;
 319
 320    /* graphics */
 321    glmesh mesh_route_lines;
 322
 323    glmesh mesh_geo,
 324           mesh_no_collide,
 325           mesh_water;
 326
 327    mdl_submesh sm_foliage_main;
 328    rigidbody rb_geo;
 329 }
 330 world;
 331
 332
 333 /*
 334  * API
 335  */
 336
 337 VG_STATIC int ray_hit_is_ramp( ray_hit *hit );
 338 VG_STATIC int ray_hit_is_terrain( ray_hit *hit );
 339 VG_STATIC void ray_world_get_tri( ray_hit *hit, v3f tri[3] );
 340 VG_STATIC int ray_world( v3f pos, v3f dir, ray_hit *hit );
 341
 342 /*
 343  * Submodules
 344  */
 345
 346 #include "world_routes.h"
 347 #include "world_sfd.h"
 348 #include "world_render.h"
 349 #include "world_water.h"
 350 #include "world_gen.h"
 351 #include "world_gate.h"
 352
 353 /*
 354  * -----------------------------------------------------------------------------
 355  *                                    Events
 356  * -----------------------------------------------------------------------------
 357  */
 358
 359 VG_STATIC int world_stop_sound( int argc, const char *argv[] )
 360 {
 361    /*
 362     * None of our world audio runs as one shots, they always have a player.
 363     * Therefore it is safe to delete clip data after the players are
 364     * disconnected
 365     */
 366    audio_lock();
 367    for( int i=0; i<world.audio_things_count; i++ )
 368    {
 369       struct world_audio_thing *at = &world.audio_things[i];
 370
 371       if( audio_player_is_playing( &at->player ) )
 372       {
 373          u32 cflags = audio_player_get_flags( &at->player );
 374          audio_player_set_flags( &at->player, cflags | AUDIO_FLAG_KILL );
 375       }
 376    }
 377    audio_unlock();
 378
 379    return 0;
 380 }
 381
 382 VG_STATIC int world_change_world( int argc, const char *argv[] )
 383 {
 384    if( argc == 0 )
 385    {
 386       vg_info( "%s\n", world.world_name );
 387       return 0;
 388    }
 389    else
 390    {
 391       vg_info( "Switching world...\n" );
 392       strcpy( world.world_name, argv[0] );
 393       world.switching_to_new_world = 1;
 394       world_stop_sound( 0, NULL );
 395    }
 396
 397    return 0;
 398 }
 399
 400 VG_STATIC void world_init(void)
 401 {
 402    vg_convar_push( (struct vg_convar){
 403       .name = "water_enable",
 404       .data = &world.water.enabled,
 405       .data_type = k_convar_dtype_i32,
 406       .opt_i32 = { .min=0, .max=1, .clamp=1 },
 407       .persistent = 0
 408    });
 409
 410         vg_function_push( (struct vg_cmd)
 411    {
 412                 .name = "world_stop_sound",
 413                 .function = world_stop_sound
 414         });
 415
 416         vg_function_push( (struct vg_cmd)
 417    {
 418                 .name = "world",
 419                 .function = world_change_world
 420         });
 421
 422    world.sky_rate = 1.0;
 423    world.sky_target_rate = 1.0;
 424
 425    shader_terrain_register();
 426    shader_sky_register();
 427    shader_planeinf_register();
 428    shader_gpos_register();
 429    shader_fscolour_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 *nlower = mdl_node_from_name( msky, "dome_lower" ),
 438             *nupper = mdl_node_from_name( msky, "dome_upper" );
 439
 440    world.dome_lower = *mdl_node_submesh( msky, nlower, 0 );
 441    world.dome_upper = *mdl_node_submesh( msky, nupper, 0 );
 442
 443    vg_acquire_thread_sync();
 444    {
 445       mdl_unpack_glmesh( msky, &world.skydome );
 446    }
 447    vg_release_thread_sync();
 448
 449    /* Other systems */
 450    vg_info( "Loading other world systems\n" );
 451
 452    vg_loader_highwater( world_render_init, NULL, NULL );
 453    vg_loader_highwater( world_sfd_init, NULL, NULL );
 454    vg_loader_highwater( world_water_init, NULL, NULL );
 455    vg_loader_highwater( world_gates_init, NULL, NULL );
 456    vg_loader_highwater( world_routes_init, NULL, NULL );
 457
 458    /* Allocate dynamic world memory arena */
 459    u32 max_size = 72*1024*1024;
 460    world.dynamic_vgl = vg_create_linear_allocator( vg_mem.rtmemory, max_size,
 461                                                    VG_MEMORY_SYSTEM );
 462 }
 463
 464 VG_STATIC void world_audio_init(void)
 465 {
 466    u32 size = vg_linear_remaining( vg_audio.audio_pool )
 467                - sizeof(vg_linear_allocator);
 468
 469    world.audio_vgl = vg_create_linear_allocator( vg_audio.audio_pool,
 470                                                  size, VG_MEMORY_SYSTEM );
 471 }
 472
 473 VG_STATIC void world_trigger_achievement( u32 uid )
 474 {
 475    struct logic_achievement *ach = &world.logic_achievements[ uid ];
 476
 477    if( ach->achieved )
 478       return;
 479
 480    steam_set_achievement( ach->achievement_id );
 481    steam_store_achievements();
 482
 483    ach->achieved = 1;
 484 }
 485
 486 VG_STATIC void world_run_relay( struct relay_target *rt );
 487 VG_STATIC void world_trigger_relay( u32 uid )
 488 {
 489    struct logic_relay *relay = &world.logic_relays[ uid ];
 490
 491    for( int i=0; i<relay->target_count; i++ )
 492    {
 493       world_run_relay( &relay->targets[i] );
 494    }
 495 }
 496
 497 VG_STATIC void world_trigger_audio( u32 uid )
 498 {
 499    struct world_audio_thing *wat = &world.audio_things[ uid ];
 500
 501    audio_lock();
 502    audio_player_playclip( &wat->player,
 503                           &wat->temp_embedded_clip );
 504    audio_unlock();
 505 }
 506
 507 VG_STATIC void world_run_relay( struct relay_target *rt )
 508 {
 509    struct entity_instruction
 510    {
 511       enum classtype classtype;
 512       void (*p_trigger)( u32 uid );
 513    }
 514    entity_instructions[] =
 515    {
 516       { k_classtype_logic_achievement, world_trigger_achievement },
 517       { k_classtype_logic_relay, world_trigger_relay },
 518       { k_classtype_audio, world_trigger_audio }
 519    };
 520
 521    for( int i=0; i<vg_list_size(entity_instructions); i++ )
 522    {
 523       struct entity_instruction *instr = &entity_instructions[i];
 524
 525       if( instr->classtype == rt->classtype )
 526       {
 527          instr->p_trigger( rt->sub_id );
 528          return;
 529       }
 530    }
 531
 532    vg_error( "Don't know how to trigger classtype %d\n", rt->classtype );
 533 }
 534
 535 VG_STATIC void world_update( v3f pos )
 536 {
 537    if( world.switching_to_new_world )
 538    {
 539       int all_stopped = 1;
 540
 541       audio_lock();
 542       for( int i=0; i<world.audio_things_count; i++ )
 543       {
 544          struct world_audio_thing *at = &world.audio_things[i];
 545
 546          if( audio_player_is_playing( &at->player ) )
 547          {
 548             all_stopped = 0;
 549             break;
 550          }
 551       }
 552       audio_unlock();
 553
 554       if( all_stopped )
 555       {
 556          world.switching_to_new_world = 0;
 557          world_unload();
 558          world_load();
 559       }
 560    }
 561
 562
 563    world.sky_time += world.sky_rate * vg.time_delta;
 564    world.sky_rate = vg_lerp( world.sky_rate, world.sky_target_rate,
 565                                  vg.time_delta * 5.0 );
 566
 567    world_routes_update();
 568 #if 0
 569    world_routes_debug();
 570 #endif
 571
 572    int closest = 0;
 573    float min_dist = INFINITY;
 574
 575    for( int i=0; i<world.route_count; i++ )
 576    {
 577       float d = v3_dist2( world.routes[i].scoreboard_transform[3], pos );
 578
 579       if( d < min_dist )
 580       {
 581          min_dist = d;
 582          closest = i;
 583       }
 584    }
 585
 586    if( (world.active_route_board != closest) || network_scores_updated )
 587    {
 588       network_scores_updated = 0;
 589       world.active_route_board = closest;
 590
 591       struct route *route = &world.routes[closest];
 592
 593       u32 id = route->track_id;
 594
 595       if( id != 0xffffffff )
 596       {
 597          struct netmsg_board *local_board = &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    int in_trigger = 0;
 607    for( int i=0; i<world.trigger_count; i++ )
 608    {
 609       struct trigger_zone *zone = &world.triggers[i];
 610
 611       v3f local;
 612       m4x3_mulv( zone->inv_transform, pos, local );
 613
 614       if( (fabsf(local[0]) <= 1.0f) &&
 615           (fabsf(local[1]) <= 1.0f) &&
 616           (fabsf(local[2]) <= 1.0f) )
 617       {
 618          in_trigger = 1;
 619
 620          if( !world.in_trigger )
 621          {
 622             world_run_relay( &zone->target );
 623          }
 624       }
 625
 626       vg_line_boxf_transformed( zone->transform, (boxf){{-1.0f,-1.0f,-1.0f},
 627                                                         { 1.0f, 1.0f, 1.0f}},
 628                                                         0xff00ff00 );
 629    }
 630
 631    world.in_trigger = in_trigger;
 632    sfd_update();
 633 }
 634
 635 /*
 636  * -----------------------------------------------------------------------------
 637  *                              API implementation
 638  * -----------------------------------------------------------------------------
 639  */
 640
 641 VG_STATIC void ray_world_get_tri( ray_hit *hit, v3f tri[3] )
 642 {
 643    for( int i=0; i<3; i++ )
 644       v3_copy( world.scene_geo->arrvertices[ hit->tri[i] ].co, tri[i] );
 645 }
 646
 647 VG_STATIC int ray_world( v3f pos, v3f dir, ray_hit *hit )
 648 {
 649    return scene_raycast( world.scene_geo, world.geo_bh, pos, dir, hit );
 650 }
 651
 652 VG_STATIC int ray_hit_is_terrain( ray_hit *hit )
 653 {
 654    return 0;
 655 #if 0
 656    u32 valid_start = 0,
 657        valid_end   = world.sm_terrain.vertex_count;
 658
 659    return (hit->tri[0] >= valid_start) &&
 660           (hit->tri[0]  < valid_end);
 661 #endif
 662 }
 663
 664 VG_STATIC int ray_hit_is_ramp( ray_hit *hit )
 665 {
 666    return 1;
 667 #if 0
 668    u32 valid_start = world.sm_geo_std.vertex_start,
 669        valid_end   = world.sm_geo_vb.vertex_start;
 670
 671    return (hit->tri[0] >= valid_start) &&
 672           (hit->tri[0]  < valid_end);
 673 #endif
 674 }
 675
 676 #endif /* WORLD_H */