menu.h

   1 #ifndef MENU_H
   2 #define MENU_H
   3
   4 #include "common.h"
   5 #include "model.h"
   6 #include "world_render.h"
   7 #include "player.h"
   8 #include "conf.h"
   9 #include "shaders/model_menu.h"
  10 #include "audio.h"
  11 #include "input.h"
  12
  13 #define MENU_STACK_SIZE 8
  14
  15 struct {
  16    int active;
  17    f32 factive;
  18    int disable_open;
  19
  20    u32 page, /* current page index */
  21        page_depth;
  22
  23    enum menu_input_mode{
  24       k_menu_input_mode_mouse,
  25       k_menu_input_mode_keys
  26    }
  27    input_mode;
  28    f32 mouse_track, mouse_dist;  /* used for waking up mouse */
  29    f32 slider_offset;
  30
  31    struct page_stack_frame {
  32       u32 page;
  33       ent_menuitem *loc;
  34       ent_camera *cam;
  35    }
  36    page_stack[ MENU_STACK_SIZE ];
  37
  38    ent_menuitem *loc;
  39    ent_camera   *cam;
  40    camera        view;
  41
  42    mdl_context model;
  43    GLuint texture;
  44    glmesh mesh;
  45
  46    mdl_array_ptr items, markers, cameras;
  47 }
  48 static menu;
  49
  50 /*
  51  * Attaches memory locations to the various items in the menu
  52  */
  53 static void menu_link(void)
  54 {
  55    /* link data locations */
  56    for( u32 i=0; i<mdl_arrcount(&menu.items); i++ ){
  57       ent_menuitem *item = mdl_arritm( &menu.items, i );
  58
  59       if( item->type == k_ent_menuitem_type_toggle ||
  60           item->type == k_ent_menuitem_type_slider ){
  61
  62          const char *name;
  63
  64          if( item->type == k_ent_menuitem_type_slider )
  65             name = mdl_pstr( &menu.model, item->slider.pstr_data );
  66          else
  67             name = mdl_pstr( &menu.model, item->checkmark.pstr_data );
  68          vg_var *var = vg_console_match_var( name );
  69
  70          if( var ){
  71             if( ( item->type == k_ent_menuitem_type_slider &&
  72                   var->data_type != k_var_dtype_f32
  73                 ) ||
  74                 ( item->type == k_ent_menuitem_type_toggle &&!
  75                   ( var->data_type == k_var_dtype_i32 ||
  76                     var->data_type == k_var_dtype_u32
  77                   )
  78                )
  79             ){
  80                vg_error( "Cannot hook to data %s(%p), because it is type %d.\n",
  81                            name, var, var->data_type );
  82                item->pvoid = NULL;
  83             }
  84             else{
  85                item->pvoid = var->data;
  86             }
  87          }
  88          else{
  89             vg_error( "No data named %s\n", name );
  90             item->pvoid = NULL;
  91          }
  92       }
  93       else{
  94          item->pvoid = NULL;
  95       }
  96    }
  97 }
  98
  99 static void menu_init(void)
 100 {
 101    void *alloc = vg_mem.rtmemory;
 102
 103    mdl_open( &menu.model, "models/rs_menu.mdl", alloc );
 104    mdl_load_metadata_block( &menu.model, alloc );
 105
 106    vg_linear_clear( vg_mem.scratch );
 107
 108    mdl_load_array( &menu.model, &menu.items,   "ent_menuitem", alloc );
 109    mdl_load_array( &menu.model, &menu.markers, "ent_marker", alloc );
 110    mdl_load_array( &menu.model, &menu.cameras, "ent_camera", alloc );
 111
 112    vg_linear_clear( vg_mem.scratch );
 113
 114    if( !mdl_arrcount( &menu.model.textures ) )
 115       vg_fatal_error( "No texture in menu file" );
 116
 117    mdl_texture *tex0 = mdl_arritm( &menu.model.textures, 0 );
 118    void *data = vg_linear_alloc( vg_mem.scratch, tex0->file.pack_size );
 119    mdl_fread_pack_file( &menu.model, &tex0->file, data );
 120
 121    mdl_async_load_glmesh( &menu.model, &menu.mesh );
 122    vg_tex2d_load_qoi_async( data, tex0->file.pack_size,
 123                             VG_TEX2D_LINEAR|VG_TEX2D_CLAMP,
 124                             &menu.texture );
 125
 126    mdl_close( &menu.model );
 127    shader_model_menu_register();
 128 }
 129
 130 /*
 131  * Drop back a page until we're at the bottom which then we jus quit
 132  */
 133 static void menu_back_page(void)
 134 {
 135    vg_info( "menu_back_page()\n" );
 136    menu.page_depth --;
 137    if( menu.page_depth == 0 ){
 138       menu.active = 0;
 139       menu.page = 0xffffffff;
 140    }
 141    else{
 142       menu.page = menu.page_stack[ menu.page_depth ].page;
 143       menu.cam = menu.page_stack[ menu.page_depth ].cam;
 144
 145       if( menu.input_mode == k_menu_input_mode_keys )
 146          menu.loc = menu.page_stack[ menu.page_depth ].loc;
 147       else menu.loc = NULL;
 148    }
 149 }
 150
 151 /*
 152  * Open page to the string identifier
 153  */
 154 static void menu_open_page( const char *name )
 155 {
 156    if( menu.page_depth >= MENU_STACK_SIZE )
 157       vg_fatal_error( "Stack overflow\n" );
 158
 159    vg_info( "Try to open %s\n", name );
 160
 161    u32 hash = vg_strdjb2( name );
 162    for( u32 i=0; i<mdl_arrcount(&menu.items); i++ ){
 163       ent_menuitem *item = mdl_arritm( &menu.items, i );
 164
 165       if( item->type == k_ent_menuitem_type_page ){
 166          if( mdl_pstreq( &menu.model, item->page.pstr_name, name, hash ) ){
 167             u32 new_page = __builtin_ctz( item->groups );
 168
 169             if( new_page == menu.page ){
 170                menu_back_page();
 171             }
 172             else{
 173                menu.page_stack[ menu.page_depth    ].page = menu.page;
 174                menu.page_stack[ menu.page_depth    ].cam = menu.cam;
 175                menu.page_stack[ menu.page_depth ++ ].loc = menu.loc;
 176                menu.page = __builtin_ctz( item->groups );
 177
 178                if( menu.input_mode == k_menu_input_mode_keys ){
 179                   if( item->page.id_entrypoint ){
 180                      u32 id = mdl_entity_id_id( item->page.id_entrypoint );
 181                      menu.loc = mdl_arritm( &menu.items, id );
 182                   }
 183                }
 184
 185                if( item->page.id_viewpoint ){
 186                   u32 id = mdl_entity_id_id( item->page.id_viewpoint );
 187                   menu.cam = mdl_arritm( &menu.cameras, id );
 188                }
 189                vg_info( "menu page: %u (%p,%p)\n",
 190                         menu.page, menu.loc, menu.cam );
 191             }
 192             return;
 193          }
 194       }
 195    }
 196 }
 197
 198 /*
 199  * activate a pressable type
 200  */
 201 static void menu_trigger_item( ent_menuitem *item )
 202 {
 203    if     ( item->type == k_ent_menuitem_type_event_button ){
 204       u32 q = item->button.pstr;
 205
 206       if( MDL_CONST_PSTREQ( &menu.model, q, "quit" ) ){
 207          vg.window_should_close = 1;
 208       }
 209       else if( MDL_CONST_PSTREQ( &menu.model, q, "reset" ) ){
 210          localplayer_cmd_respawn( 0, NULL );
 211
 212          menu.page_depth = 0;
 213          menu.active = 0;
 214          menu.page = 0xffffffff;
 215       }
 216    }
 217    else if( item->type == k_ent_menuitem_type_page_button ){
 218       menu_open_page( mdl_pstr( &menu.model, item->button.pstr ) );
 219    }
 220    else if( item->type == k_ent_menuitem_type_toggle ){
 221       if( item->pi32 ){
 222          *item->pi32 = *item->pi32 ^ 0x1;
 223       }
 224    }
 225 }
 226
 227 static f32 menu_slider_snap( f32 value, f32 old, f32 notch )
 228 {
 229    f32 const k_epsilon = 0.0125f;
 230
 231    if( fabsf(notch-value) < k_epsilon ){
 232       if( fabsf(notch-old) > k_epsilon ){
 233          audio_lock();
 234          audio_oneshot( &audio_ui[0], 1.0f, 0.0f );
 235          audio_unlock();
 236       }
 237
 238       return notch;
 239    }
 240    else
 241       return value;
 242 }
 243
 244 /*
 245  * Run from vg_gui every frame
 246  */
 247 static void menu_update(void)
 248 {
 249    if( button_down( k_srbind_mopen ) ){
 250       if( !menu.active && !menu.disable_open ){
 251          menu.active = 1;
 252          menu.page = 0xffffffff;
 253          menu_open_page( "Main Menu" );
 254          return;
 255       }
 256    }
 257
 258    menu.factive = vg_lerpf( menu.factive, menu.active,
 259                             vg.time_frame_delta * 6.0f );
 260
 261    if( !menu.active ) return;
 262
 263    enum menu_input_mode prev_mode = menu.input_mode;
 264
 265    /* get buttons inputs
 266     * -------------------------------------------------------------------*/
 267    int ml = button_down( k_srbind_mleft ),
 268        mr = button_down( k_srbind_mright ),
 269        mu = button_down( k_srbind_mup ),
 270        md = button_down( k_srbind_mdown ),
 271        mh = ml-mr,
 272        mv = mu-md,
 273        enter = button_down( k_srbind_maccept ),
 274        escape = button_down( k_srbind_mback );
 275
 276    if( mh||mv||enter ){
 277       menu.input_mode = k_menu_input_mode_keys;
 278    }
 279
 280    /* get mouse inputs
 281     * --------------------------------------------------------------------*/
 282    menu.mouse_dist += v2_length( vg.mouse_delta ); /* TODO: Move to UI */
 283    menu.mouse_track += vg.time_frame_delta;
 284    if( menu.mouse_track > 0.1f ){
 285       menu.mouse_track = fmodf( menu.mouse_track, 0.1f );
 286       if( menu.mouse_dist > 10.0f ){
 287          menu.input_mode = k_menu_input_mode_mouse;
 288          menu.mouse_dist = 0.0f;
 289       }
 290    }
 291
 292    if( ui_clicking(UI_MOUSE_LEFT) || ui_clicking(UI_MOUSE_RIGHT) ){
 293       menu.input_mode = k_menu_input_mode_mouse;
 294    }
 295
 296    if( menu.input_mode == k_menu_input_mode_mouse ){
 297       /*
 298        * handle mouse input
 299        * ------------------------------------------------------------*/
 300       vg_ui.wants_mouse = 1;
 301
 302       /*
 303        * this raycasting is super cumbersome because all the functions were
 304        * designed for other purposes. we dont care though.
 305        */
 306       m4x4f inverse;
 307       m4x4_inv( menu.view.mtx.p, inverse );
 308       v4f coords;
 309       coords[0] = vg_ui.mouse[0];
 310       coords[1] = vg.window_y - vg_ui.mouse[1];
 311       v2_div( coords, (v2f){ vg.window_x, vg.window_y }, coords );
 312       v2_muls( coords, 2.0f, coords );
 313       v2_add( coords, (v2f){-1.0f,-1.0f}, coords );
 314       coords[2] = 1.0f;
 315       coords[3] = 1.0f;
 316       m4x4_mulv( inverse, coords, coords );
 317       v3f ray;
 318       m3x3_mulv( menu.view.transform, coords, ray );
 319       v3_normalize( ray );
 320
 321       if( menu.loc && (menu.loc->type == k_ent_menuitem_type_slider) &&
 322           ui_clicking(UI_MOUSE_LEFT) && menu.loc->pf32 ){
 323
 324          u32 il = mdl_entity_id_id( menu.loc->slider.id_min ),
 325              ir = mdl_entity_id_id( menu.loc->slider.id_max );
 326          ent_marker *ml = mdl_arritm( &menu.markers, il ),
 327                     *mr = mdl_arritm( &menu.markers, ir );
 328
 329          v3f q2;
 330          v3_muladds( menu.view.pos, ray, 100.0f, q2 );
 331
 332          f32 s,t;
 333          v3f c1, c2;
 334          v3f p1, q1, v0;
 335          v3_sub( mr->transform.co, ml->transform.co, v0 );
 336          v3_muladds( ml->transform.co, v0, -1.0f, p1 );
 337          v3_muladds( mr->transform.co, v0,  1.0f, q1 );
 338          closest_segment_segment( p1, q1, menu.view.pos, q2, &s,&t, c1,c2 );
 339
 340          s-=(1.0f/3.0f);
 341          s/=(1.0f/3.0f);
 342
 343          if( ui_click_down(UI_MOUSE_LEFT) ){
 344             menu.slider_offset = *menu.loc->pf32 - s;
 345          }
 346
 347          f32 newvalue = vg_clampf( s+menu.slider_offset, 0.0f, 1.0f );
 348
 349          newvalue = menu_slider_snap( newvalue, *menu.loc->pf32, 0.00f );
 350          newvalue = menu_slider_snap( newvalue, *menu.loc->pf32, 1.00f );
 351          newvalue = menu_slider_snap( newvalue, *menu.loc->pf32, 0.25f );
 352          newvalue = menu_slider_snap( newvalue, *menu.loc->pf32, 0.50f );
 353          newvalue = menu_slider_snap( newvalue, *menu.loc->pf32, 0.75f );
 354
 355          *menu.loc->pf32 = newvalue;
 356          return;
 357       }
 358
 359       ent_menuitem *hit_item = NULL;
 360
 361       for( u32 i=0; i<mdl_arrcount(&menu.items); i++ ){
 362          ent_menuitem *item = mdl_arritm( &menu.items, i );
 363
 364          if( item->type == k_ent_menuitem_type_page ) continue;
 365          if( item->type == k_ent_menuitem_type_visual ) continue;
 366          if( !(item->groups & (0x1<<menu.page)) ) continue;
 367
 368          ent_menuitem *ray_item = item;
 369
 370          if( item->type == k_ent_menuitem_type_slider ){
 371             u32 subtarget = mdl_entity_id_id( item->slider.id_handle );
 372             ray_item = mdl_arritm( &menu.items, subtarget );
 373          }
 374
 375          v3f local_ray,
 376              local_co;
 377
 378          m4x3f inverse_mtx;
 379          mdl_transform_m4x3( &ray_item->transform, inverse_mtx );
 380          m4x3_invert_full( inverse_mtx, inverse_mtx );
 381
 382          m4x3_mulv( inverse_mtx, menu.view.transform[3], local_co );
 383          m3x3_mulv( inverse_mtx, ray, local_ray );
 384          v3_normalize( local_ray );
 385
 386          local_ray[0] = 1.0f/local_ray[0];
 387          local_ray[1] = 1.0f/local_ray[1];
 388          local_ray[2] = 1.0f/local_ray[2];
 389
 390          for( u32 j=0; j<ray_item->submesh_count; j++ ){
 391             mdl_submesh *sm = mdl_arritm( &menu.model.submeshs,
 392                                            ray_item->submesh_start + j );
 393             if( ray_aabb1( sm->bbx, local_co, local_ray, 1000.0f ) ){
 394                hit_item = item;
 395                break;
 396             }
 397          }
 398       }
 399
 400       if( hit_item != menu.loc ){
 401          menu.loc = hit_item;
 402       }
 403
 404       if( escape ){
 405          menu_back_page();
 406       }
 407       else if( menu.loc ){
 408          if( ui_click_down( UI_MOUSE_LEFT ) ){
 409             menu_trigger_item( menu.loc );
 410          }
 411       }
 412    }
 413    else if( menu.input_mode == k_menu_input_mode_keys ){
 414       /*
 415        * handle button input
 416        * ------------------------------------------------------------*/
 417       if( (prev_mode != k_menu_input_mode_keys) && !menu.loc ){
 418          for( u32 i=0; i<mdl_arrcount(&menu.items); i++ ){
 419             ent_menuitem *item = mdl_arritm( &menu.items, i );
 420
 421             if( (item->type != k_ent_menuitem_type_page) &&
 422                 (item->type != k_ent_menuitem_type_visual) &&
 423                 (item->groups & (0x1<<menu.page)) ){
 424                menu.loc = item;
 425             }
 426          }
 427       }
 428
 429       if( !menu.loc ) vg_fatal_error( "No location\n" );
 430
 431       if( menu.loc->type == k_ent_menuitem_type_slider && menu.loc->pf32 ){
 432          f32 move = 0.0f;
 433
 434          if( vg_input.display_input_method == k_input_method_controller ){
 435             move += button_press( k_srbind_mright );
 436             move -= button_press( k_srbind_mleft );
 437          }
 438          else{
 439             move += axis_state( k_sraxis_mbrowse_h );
 440          }
 441
 442          move *= vg.time_frame_delta;
 443          *menu.loc->pf32 = vg_clampf( *menu.loc->pf32 + move, 0.0f, 1.0f );
 444
 445          mh = 0;
 446       }
 447
 448       if( escape ){
 449          menu_back_page();
 450       }
 451       else if( enter ){
 452          menu_trigger_item( menu.loc );
 453       }
 454       else if( mh||mv ){
 455          v3f opt;
 456          v3_zero( opt );
 457          f32 best = 0.707f;
 458          ent_menuitem *nextpos = NULL;
 459
 460          opt[0] += mh;
 461          opt[2] += mv;
 462          mdl_transform_vector( &menu.cam->transform, opt, opt );
 463
 464          for( u32 i=0; i<4; i++ ){
 465             u32 id = menu.loc->id_links[i];
 466             if( !id ) continue;
 467             u32 index = mdl_entity_id_id( id );
 468
 469             ent_menuitem *other = mdl_arritm( &menu.items, index );
 470             v3f delta;
 471             v3_sub( menu.loc->transform.co, other->transform.co, delta );
 472             v3_normalize( delta );
 473
 474             f32 score = v3_dot( delta, opt );
 475             if( score > best ){
 476                best = score;
 477                nextpos = other;
 478             }
 479          }
 480
 481          if( nextpos ){
 482             menu.loc = nextpos;
 483          }
 484       }
 485    }
 486 }
 487
 488 /*
 489  * Run from vg_gui when active
 490  */
 491 VG_STATIC void menu_render(void)
 492 {
 493    glEnable(GL_BLEND);
 494    glDisable(GL_DEPTH_TEST);
 495    glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
 496    glBlendEquation(GL_FUNC_ADD);
 497
 498    shader_blitcolour_use();
 499    v4f colour;
 500    ui_hex_to_norm( ui_colour( k_ui_bg+3 ), colour );
 501    colour[3] = 0.5f;
 502
 503    shader_blitcolour_uColour( colour );
 504    render_fsquad();
 505
 506    glEnable( GL_DEPTH_TEST );
 507    glDisable( GL_BLEND );
 508
 509    f32 rate = vg.time_frame_delta * 12.0f;
 510
 511    if( menu.cam ){
 512       camera target;
 513
 514       target.fov = menu.cam->fov;
 515       v3_copy( menu.cam->transform.co, target.pos );
 516
 517       v3f v0;
 518       mdl_transform_vector( &menu.cam->transform, (v3f){0.0f,-1.0f,0.0f}, v0 );
 519       player_vector_angles( target.angles, v0, 1.0f, 0.0f );
 520
 521       camera_lerp( &menu.view, &target, rate, &menu.view );
 522
 523       menu.view.farz = 150.0f;
 524       menu.view.nearz = 0.01f;
 525
 526       camera_update_transform( &menu.view );
 527       camera_update_view( &menu.view );
 528       camera_update_projection( &menu.view );
 529       camera_finalize( &menu.view );
 530    }
 531    else return;
 532
 533    shader_model_menu_use();
 534    shader_model_menu_uTexMain( 1 );
 535    glActiveTexture( GL_TEXTURE1 );
 536    glBindTexture( GL_TEXTURE_2D, menu.texture );
 537    shader_model_menu_uPv( menu.view.mtx.pv );
 538    shader_model_menu_uPvmPrev( menu.view.mtx_prev.pv );
 539
 540    mesh_bind( &menu.mesh );
 541
 542    v4f white, blue;
 543
 544    ui_hex_to_norm( ui_colour( k_ui_fg ), white );
 545    ui_hex_to_norm( ui_colour( k_ui_orange+k_ui_brighter ), blue );
 546
 547    for( u32 i=0; i<mdl_arrcount(&menu.items); i++ ){
 548       ent_menuitem *item = mdl_arritm( &menu.items, i );
 549
 550       if(   item->type == k_ent_menuitem_type_page ) continue;
 551       if( !(item->groups & (0x1 << menu.page)) ) continue;
 552
 553       int selected = 0;
 554
 555       if( menu.loc ){
 556          if( menu.loc->type == k_ent_menuitem_type_slider ){
 557             u32 subid = menu.loc->slider.id_handle;
 558             if( item == mdl_arritm( &menu.items, mdl_entity_id_id(subid) ))
 559                selected = 1;
 560          }
 561          else{
 562             if( item == menu.loc )
 563                selected = 1;
 564          }
 565       }
 566
 567       item->factive = vg_lerpf( item->factive, selected, rate );
 568       v4f colour;
 569       v4_lerp( white, blue, item->factive, colour );
 570       shader_model_menu_uColour( colour );
 571
 572       f32 scale = 1.0f+item->factive*0.1f;
 573
 574       m4x3f mmdl;
 575       mdl_transform transform = item->transform;
 576       v3_muls( transform.s, scale, transform.s );
 577       mdl_transform_m4x3( &transform, mmdl );
 578
 579       if( item->type == k_ent_menuitem_type_toggle && item->pi32 ){
 580          u32 subid = mdl_entity_id_id( item->checkmark.id_check );
 581          ent_menuitem *subitem = mdl_arritm( &menu.items, subid );
 582
 583          v3_muladds( item->transform.co, item->checkmark.offset, scale,
 584                      subitem->transform.co );
 585
 586          subitem->fvisible = vg_lerpf( subitem->fvisible, *item->pi32, rate );
 587          v3_fill( subitem->transform.s, subitem->fvisible );
 588       }
 589       else if( item->type == k_ent_menuitem_type_slider && item->pf32 ){
 590          u32 il = mdl_entity_id_id( item->slider.id_min ),
 591              ir = mdl_entity_id_id( item->slider.id_max ),
 592              ih = mdl_entity_id_id( item->slider.id_handle );
 593          ent_marker *ml = mdl_arritm( &menu.markers, il ),
 594                     *mr = mdl_arritm( &menu.markers, ir );
 595          ent_menuitem *handle = mdl_arritm( &menu.items, ih );
 596
 597          v3_lerp( ml->transform.co, mr->transform.co, *item->pf32,
 598                   handle->transform.co );
 599       }
 600
 601       shader_model_menu_uMdl( mmdl );
 602
 603       for( u32 j=0; j<item->submesh_count; j++ ){
 604          u32 index = item->submesh_start + j;
 605          mdl_draw_submesh( mdl_arritm( &menu.model.submeshs, index ));
 606       }
 607    }
 608 }
 609
 610 #endif /* MENU_H */