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 VG_STATIC struct gworld
  50 {
  51    /*
  52     * Allocated as system memory
  53     * --------------------------------------------------------------------------
  54     */
  55
  56    /* rendering */
  57    glmesh skydome;
  58    mdl_submesh dome_upper, dome_lower;
  59
  60    glmesh mesh_gate_surface;
  61
  62    double sky_time, sky_rate, sky_target_rate;
  63
  64    /* water rendering */
  65    struct
  66    {
  67       struct framebuffer fbreflect, fbdepth;
  68
  69       boxf depthbounds;
  70       int depth_computed;
  71
  72       float height;
  73       int enabled;
  74       v4f plane;
  75    }
  76    water;
  77
  78    /* split flap display */
  79    struct
  80    {
  81       mdl_submesh *sm_module, *sm_card;
  82       glmesh mesh_base, mesh_display;
  83
  84       u32 w, h;
  85       float *buffer;
  86    }
  87    sfd;
  88
  89    /* timing bars, fixed maximum amount */
  90    struct route_ui_bar
  91    {
  92       GLuint vao, vbo, ebo;
  93
  94       u32  indices_head;
  95       u32  vertex_head;
  96
  97       struct route_ui_segment
  98       {
  99          float length;
 100          u32 vertex_start, vertex_count,
 101              index_start, index_count, notches;
 102       }
 103       segments[k_max_ui_segments];
 104
 105       u32 segment_start, segment_count, fade_start, fade_count;
 106       double fade_timer_start;
 107       float xpos;
 108    }
 109    ui_bars[16];
 110
 111    v3f render_gate_pos;
 112    int active_route_board;
 113
 114    /* This is a small flag we use to changelevel.
 115     * It will not be cleared until all sounds stop playing
 116     */
 117    int   switching_to_new_world;
 118    char  world_name[ 64 ];
 119
 120    /*
 121     * Dynamically allocated when world_load is called.
 122     *
 123     *                  the following arrays index somewhere into this linear
 124     *                  allocator
 125     *
 126     * (world_gen.h)
 127     * --------------------------------------------------------------------------
 128     */
 129    void *dynamic_vgl;
 130
 131    /*
 132     * Main world .mdl
 133     */
 134    mdl_context *meta;
 135
 136    /*
 137     * Named safe places to respawn
 138     */
 139    struct respawn_point
 140    {
 141       v3f co;
 142       v4f q;
 143       const char *name;
 144    }
 145    * spawns;
 146    u32 spawn_count;
 147
 148    /*
 149     * Audio player entities
 150     */
 151    struct world_audio_thing
 152    {
 153       v3f pos;
 154       float volume;
 155       u32 flags;
 156
 157       audio_player player;
 158       audio_clip temp_embedded_clip;
 159    }
 160    * audio_things;
 161    u32 audio_things_count;
 162
 163    /*
 164     * Relays, random, etc
 165     */
 166    struct logic_entity
 167    {
 168       v3f pos;
 169       enum logic_type logic_type;
 170       int enabled;
 171
 172       /* indexes the action array */
 173       u32 action_start, action_count;
 174    }
 175    * logic_entities;
 176    u32 logic_entity_count;
 177
 178    /*
 179     * Action array
 180     */
 181    struct logic_action
 182    {
 183       u32 event,     /* on trigger, on enable, etc (TODO: Enum) */
 184           target_id; /* thing to target, 0: self */
 185
 186    }
 187    * logic_actions;
 188    u32 logic_action_count;
 189
 190    /*
 191     * Box trigger entities
 192     */
 193    struct trigger_zone
 194    {
 195       m4x3f transform, inv_transform;
 196       u32   trigger_entity;
 197    }
 198    * triggers;
 199    u32 trigger_count;
 200
 201
 202    /*
 203     * Routes (world_routes.h)
 204     * --------------------------------------------------------------------------
 205     */
 206    struct route_node
 207    {
 208       v3f co, right, up, h;
 209       u32 next[2];
 210
 211       u32 special_type, special_id, current_refs, ref_count;
 212       u32 route_ids[4];    /* Gates can be linked into up to four routes */
 213    }
 214    *nodes;
 215    u32 node_count;
 216
 217    struct route
 218    {
 219       u32 track_id;
 220       v4f colour;
 221
 222       u32 start;
 223       mdl_submesh sm;
 224
 225       int active;
 226       float factive;
 227
 228       double best_lap, latest_pass; /* Session */
 229
 230       m4x3f scoreboard_transform;
 231    }
 232    *routes;
 233    u32 route_count;
 234
 235    struct route_gate
 236    {
 237       struct teleport_gate
 238       {
 239          v3f co[2];
 240          v4f q[2];
 241          v2f dims;
 242
 243          m4x3f to_world, recv_to_world, transport;
 244       }
 245       gate;
 246
 247       u32 node_id;
 248
 249       struct route_timing
 250       {
 251          u32 version; /* Incremented on every teleport */
 252          double time;
 253       }
 254       timing;
 255    }
 256    *gates;
 257    u32 gate_count;
 258
 259    struct route_collector
 260    {
 261       struct route_timing timing;
 262    }
 263    *collectors;
 264    u32 collector_count;
 265
 266
 267    /* logic
 268     * ----------------------------------------------------
 269     */
 270
 271    u32 active_gate,
 272        current_run_version;
 273    double time, rewind_from, rewind_to, last_use;
 274
 275    /* world geometry */
 276    scene *scene_geo,
 277          *scene_no_collide,
 278          *scene_lines;
 279
 280    /* spacial mappings */
 281    bh_tree *audio_bh,
 282            *trigger_bh,
 283            *geo_bh;
 284
 285    /* graphics */
 286    glmesh mesh_geo,
 287           mesh_no_collide,
 288           mesh_route_lines,
 289           mesh_water;
 290
 291    rigidbody rb_geo;
 292
 293    /* TODO Maybe make this less hardcoded */
 294    mdl_submesh sm_geo_std_oob,   sm_geo_std, sm_geo_vb,
 295                sm_foliage_main,  sm_foliage_alphatest,
 296                sm_graffiti, sm_subworld, sm_terrain;
 297
 298    /*
 299     * Allocated AFTER all previous buffers are done
 300     * --------------------------------------------------------------------------
 301     */
 302
 303    struct instance_cache
 304    {
 305       mdl_context *mdl;
 306       u32 pstr_file;
 307    }
 308    instance_cache[32];
 309    u32 instance_cache_count;
 310 }
 311 world;
 312
 313
 314 /*
 315  * API
 316  */
 317
 318 VG_STATIC int ray_hit_is_ramp( ray_hit *hit );
 319 VG_STATIC int ray_hit_is_terrain( ray_hit *hit );
 320 VG_STATIC void ray_world_get_tri( ray_hit *hit, v3f tri[3] );
 321 VG_STATIC int ray_world( v3f pos, v3f dir, ray_hit *hit );
 322
 323 /*
 324  * Submodules
 325  */
 326
 327 #include "world_routes.h"
 328 #include "world_sfd.h"
 329 #include "world_render.h"
 330 #include "world_water.h"
 331 #include "world_gen.h"
 332 #include "world_gate.h"
 333
 334 /*
 335  * -----------------------------------------------------------------------------
 336  *                                    Events
 337  * -----------------------------------------------------------------------------
 338  */
 339
 340 VG_STATIC int world_stop_sound( int argc, const char *argv[] )
 341 {
 342    /*
 343     * None of our world audio runs as one shots, they always have a player.
 344     * Therefore it is safe to delete clip data after the players are
 345     * disconnected
 346     */
 347    audio_lock();
 348    for( int i=0; i<world.audio_things_count; i++ )
 349    {
 350       struct world_audio_thing *at = &world.audio_things[i];
 351
 352       if( audio_player_is_playing( &at->player ) )
 353       {
 354          u32 cflags = audio_player_get_flags( &at->player );
 355          audio_player_set_flags( &at->player, cflags | AUDIO_FLAG_KILL );
 356       }
 357    }
 358    audio_unlock();
 359
 360    return 0;
 361 }
 362
 363 VG_STATIC int world_change_world( int argc, const char *argv[] )
 364 {
 365    if( argc == 0 )
 366    {
 367       vg_info( "%s\n", world.world_name );
 368       return 0;
 369    }
 370    else
 371    {
 372       vg_info( "Switching world...\n" );
 373       strcpy( world.world_name, argv[0] );
 374       world.switching_to_new_world = 1;
 375       world_stop_sound( 0, NULL );
 376    }
 377
 378    return 0;
 379 }
 380
 381 VG_STATIC void world_init(void)
 382 {
 383    vg_convar_push( (struct vg_convar){
 384       .name = "water_enable",
 385       .data = &world.water.enabled,
 386       .data_type = k_convar_dtype_i32,
 387       .opt_i32 = { .min=0, .max=1, .clamp=1 },
 388       .persistent = 0
 389    });
 390
 391         vg_function_push( (struct vg_cmd)
 392    {
 393                 .name = "world_stop_sound",
 394                 .function = world_stop_sound
 395         });
 396
 397         vg_function_push( (struct vg_cmd)
 398    {
 399                 .name = "world",
 400                 .function = world_change_world
 401         });
 402
 403    world.sky_rate = 1.0;
 404    world.sky_target_rate = 1.0;
 405
 406    shader_terrain_register();
 407    shader_sky_register();
 408    shader_planeinf_register();
 409    shader_gpos_register();
 410    shader_fscolour_register();
 411    shader_alphatest_register();
 412
 413    vg_info( "Loading world resources\n" );
 414
 415    vg_linear_clear( vg_mem.scratch );
 416    mdl_context *msky = mdl_load_full( vg_mem.scratch, "models/rs_skydome.mdl" );
 417
 418    mdl_node *nlower = mdl_node_from_name( msky, "dome_lower" ),
 419             *nupper = mdl_node_from_name( msky, "dome_upper" );
 420
 421    world.dome_lower = *mdl_node_submesh( msky, nlower, 0 );
 422    world.dome_upper = *mdl_node_submesh( msky, nupper, 0 );
 423
 424    vg_acquire_thread_sync();
 425    {
 426       mdl_unpack_glmesh( msky, &world.skydome );
 427    }
 428    vg_release_thread_sync();
 429
 430    /* Other systems */
 431    vg_info( "Loading other world systems\n" );
 432
 433    vg_loader_highwater( world_render_init, NULL, NULL );
 434    vg_loader_highwater( world_sfd_init, NULL, NULL );
 435    vg_loader_highwater( world_water_init, NULL, NULL );
 436    vg_loader_highwater( world_gates_init, NULL, NULL );
 437    vg_loader_highwater( world_routes_init, NULL, NULL );
 438
 439    /* Allocate dynamic world memory arena */
 440    u32 max_size = 72*1024*1024;
 441    world.dynamic_vgl = vg_create_linear_allocator( vg_mem.rtmemory, max_size );
 442    for( u32 i=0; i<72*1024*1024; i++ )
 443       ((u8 *)world.dynamic_vgl)[i] = 0xfe;
 444 }
 445
 446 VG_STATIC void world_update( v3f pos )
 447 {
 448    if( world.switching_to_new_world )
 449    {
 450       int all_stopped = 1;
 451
 452       audio_lock();
 453       for( int i=0; i<world.audio_things_count; i++ )
 454       {
 455          struct world_audio_thing *at = &world.audio_things[i];
 456
 457          if( audio_player_is_playing( &at->player ) )
 458          {
 459             all_stopped = 0;
 460             break;
 461          }
 462       }
 463       audio_unlock();
 464
 465       if( all_stopped )
 466       {
 467          world.switching_to_new_world = 0;
 468          world_unload();
 469          world_load();
 470       }
 471    }
 472
 473
 474    world.sky_time += world.sky_rate * vg.time_delta;
 475    world.sky_rate = vg_lerp( world.sky_rate, world.sky_target_rate,
 476                                  vg.time_delta * 5.0 );
 477
 478    world_routes_update();
 479 #if 0
 480    world_routes_debug();
 481 #endif
 482
 483    int closest = 0;
 484    float min_dist = INFINITY;
 485
 486    for( int i=0; i<world.route_count; i++ )
 487    {
 488       float d = v3_dist2( world.routes[i].scoreboard_transform[3], pos );
 489
 490       if( d < min_dist )
 491       {
 492          min_dist = d;
 493          closest = i;
 494       }
 495    }
 496
 497    if( (world.active_route_board != closest) || network_scores_updated )
 498    {
 499       network_scores_updated = 0;
 500       world.active_route_board = closest;
 501
 502       struct route *route = &world.routes[closest];
 503
 504       u32 id = route->track_id;
 505
 506       if( id != 0xffffffff )
 507       {
 508          struct netmsg_board *local_board = &scoreboard_client_data.boards[id];
 509
 510          for( int i=0; i<13; i++ )
 511          {
 512             sfd_encode( i, &local_board->data[27*i] );
 513          }
 514       }
 515    }
 516
 517 #if 0
 518    VG_STATIC int in_zone = 0;
 519
 520    int in_zone_this_time = 0;
 521
 522    for( int i=0; i<world.achievement_zones_count; i++ )
 523    {
 524       struct achievement_zone *zone = &world.achievement_zones[i];
 525
 526       v3f local;
 527       m4x3_mulv( zone->inv_transform, pos, local );
 528
 529       if( (fabsf(local[0]) <= 1.0f) &&
 530           (fabsf(local[1]) <= 1.0f) &&
 531           (fabsf(local[2]) <= 1.0f) )
 532       {
 533          in_zone_this_time = 1;
 534
 535          if( !in_zone && zone->ptarget )
 536          {
 537             audio_lock();
 538             audio_player_playclip( &zone->ptarget->player,
 539                                    &zone->ptarget->temp_embedded_clip );
 540             audio_unlock();
 541          }
 542
 543          if( !zone->triggered )
 544          {
 545             steam_set_achievement( zone->name );
 546             steam_store_achievements();
 547          }
 548
 549          zone->triggered = 1;
 550       }
 551
 552       vg_line_boxf_transformed( zone->transform, (boxf){{-1.0f,-1.0f,-1.0f},
 553                                                         { 1.0f, 1.0f, 1.0f}},
 554                                                         0xff00ff00 );
 555    }
 556
 557    in_zone = in_zone_this_time;
 558 #endif
 559
 560    sfd_update();
 561 }
 562
 563 /*
 564  * -----------------------------------------------------------------------------
 565  *                              API implementation
 566  * -----------------------------------------------------------------------------
 567  */
 568
 569 VG_STATIC void ray_world_get_tri( ray_hit *hit, v3f tri[3] )
 570 {
 571    for( int i=0; i<3; i++ )
 572       v3_copy( world.scene_geo->arrvertices[ hit->tri[i] ].co, tri[i] );
 573 }
 574
 575 VG_STATIC int ray_world( v3f pos, v3f dir, ray_hit *hit )
 576 {
 577    return scene_raycast( world.scene_geo, world.geo_bh, pos, dir, hit );
 578 }
 579
 580 VG_STATIC int ray_hit_is_terrain( ray_hit *hit )
 581 {
 582    u32 valid_start = 0,
 583        valid_end   = world.sm_terrain.vertex_count;
 584
 585    return (hit->tri[0] >= valid_start) &&
 586           (hit->tri[0]  < valid_end);
 587 }
 588
 589 VG_STATIC int ray_hit_is_ramp( ray_hit *hit )
 590 {
 591    u32 valid_start = world.sm_geo_std.vertex_start,
 592        valid_end   = world.sm_geo_vb.vertex_start;
 593
 594    return (hit->tri[0] >= valid_start) &&
 595           (hit->tri[0]  < valid_end);
 596 }
 597
 598 #endif /* WORLD_H */