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 "shaders/model_menu.h"
   9 #include "audio.h"
  10 #include "input.h"
  11 #include "workshop.h"
  12
  13 #define MENU_STACK_SIZE 8
  14
  15 struct {
  16    int active, credits_open;
  17    int disable_open;
  18
  19    u32 page, /* current page index */
  20        page_depth;
  21
  22    enum menu_input_mode{
  23       k_menu_input_mode_keys,
  24       k_menu_input_mode_mouse
  25    }
  26    input_mode;
  27    f32 mouse_track, mouse_dist;  /* used for waking up mouse */
  28    f32 slider_offset;
  29
  30    struct page_stack_frame {
  31       u32 page;
  32       ent_menuitem *loc;
  33       ent_camera *cam;
  34    }
  35    page_stack[ MENU_STACK_SIZE ];
  36
  37    ent_menuitem *loc;
  38    ent_camera   *cam;
  39    camera        view;
  40
  41    mdl_context model;
  42    GLuint texture;
  43    glmesh mesh;
  44
  45    mdl_array_ptr items, markers, cameras;
  46 }
  47 static menu;
  48
  49 /*
  50  * Attaches memory locations to the various items in the menu
  51  */
  52 static void menu_link(void)
  53 {
  54    /* link data locations */
  55    for( u32 i=0; i<mdl_arrcount(&menu.items); i++ ){
  56       ent_menuitem *item = mdl_arritm( &menu.items, i );
  57
  58       if( item->type == k_ent_menuitem_type_toggle ||
  59           item->type == k_ent_menuitem_type_slider ){
  60
  61          const char *name;
  62
  63          if( item->type == k_ent_menuitem_type_slider )
  64             name = mdl_pstr( &menu.model, item->slider.pstr_data );
  65          else
  66             name = mdl_pstr( &menu.model, item->checkmark.pstr_data );
  67          vg_var *var = vg_console_match_var( name );
  68
  69          if( var ){
  70             if( ( item->type == k_ent_menuitem_type_slider &&
  71                   var->data_type != k_var_dtype_f32
  72                 ) ||
  73                 ( item->type == k_ent_menuitem_type_toggle &&!
  74                   ( var->data_type == k_var_dtype_i32 ||
  75                     var->data_type == k_var_dtype_u32
  76                   )
  77                )
  78             ){
  79                vg_error( "Cannot hook to data %s(%p), because it is type %d.\n",
  80                            name, var, var->data_type );
  81                item->pvoid = NULL;
  82             }
  83             else{
  84                item->pvoid = var->data;
  85             }
  86          }
  87          else{
  88             vg_error( "No data named %s\n", name );
  89             item->pvoid = NULL;
  90          }
  91       }
  92       else{
  93          item->pvoid = NULL;
  94       }
  95    }
  96 }
  97
  98 static void menu_init(void)
  99 {
 100    void *alloc = vg_mem.rtmemory;
 101
 102    mdl_open( &menu.model, "models/rs_menu.mdl", alloc );
 103    mdl_load_metadata_block( &menu.model, alloc );
 104
 105    vg_linear_clear( vg_mem.scratch );
 106
 107    mdl_load_array( &menu.model, &menu.items,   "ent_menuitem", alloc );
 108    mdl_load_array( &menu.model, &menu.markers, "ent_marker", alloc );
 109    mdl_load_array( &menu.model, &menu.cameras, "ent_camera", alloc );
 110
 111    vg_linear_clear( vg_mem.scratch );
 112
 113    if( !mdl_arrcount( &menu.model.textures ) )
 114       vg_fatal_error( "No texture in menu file" );
 115
 116    mdl_texture *tex0 = mdl_arritm( &menu.model.textures, 0 );
 117    void *data = vg_linear_alloc( vg_mem.scratch, tex0->file.pack_size );
 118    mdl_fread_pack_file( &menu.model, &tex0->file, data );
 119
 120    mdl_async_load_glmesh( &menu.model, &menu.mesh );
 121    vg_tex2d_load_qoi_async( data, tex0->file.pack_size,
 122                             VG_TEX2D_LINEAR|VG_TEX2D_CLAMP,
 123                             &menu.texture );
 124
 125    mdl_close( &menu.model );
 126    shader_model_menu_register();
 127 }
 128
 129 /*
 130  * Drop back a page until we're at the bottom which then we jus quit
 131  */
 132 static void menu_back_page(void)
 133 {
 134    vg_info( "menu_back_page()\n" );
 135    menu.page_depth --;
 136    if( menu.page_depth == 0 ){
 137       menu.active = 0;
 138       menu.page = 0xffffffff;
 139    }
 140    else{
 141       menu.page = menu.page_stack[ menu.page_depth ].page;
 142       menu.cam = menu.page_stack[ menu.page_depth ].cam;
 143
 144       if( menu.input_mode == k_menu_input_mode_keys )
 145          menu.loc = menu.page_stack[ menu.page_depth ].loc;
 146       else menu.loc = NULL;
 147    }
 148 }
 149
 150 /*
 151  * Open page to the string identifier
 152  */
 153 static void menu_open_page( const char *name )
 154 {
 155    if( menu.page_depth >= MENU_STACK_SIZE )
 156       vg_fatal_error( "Stack overflow\n" );
 157
 158    vg_info( "Try to open %s\n", name );
 159
 160    u32 hash = vg_strdjb2( name );
 161    for( u32 i=0; i<mdl_arrcount(&menu.items); i++ ){
 162       ent_menuitem *item = mdl_arritm( &menu.items, i );
 163
 164       if( item->type == k_ent_menuitem_type_page ){
 165          if( mdl_pstreq( &menu.model, item->page.pstr_name, name, hash ) ){
 166             u32 new_page = __builtin_ctz( item->groups );
 167
 168             if( new_page == menu.page ){
 169                menu_back_page();
 170             }
 171             else{
 172                menu.page_stack[ menu.page_depth    ].page = menu.page;
 173                menu.page_stack[ menu.page_depth    ].cam = menu.cam;
 174                menu.page_stack[ menu.page_depth ++ ].loc = menu.loc;
 175                menu.page = __builtin_ctz( item->groups );
 176
 177                if( menu.input_mode == k_menu_input_mode_keys ){
 178                   if( item->page.id_entrypoint ){
 179                      u32 id = mdl_entity_id_id( item->page.id_entrypoint );
 180                      menu.loc = mdl_arritm( &menu.items, id );
 181                   }
 182                }
 183
 184                if( item->page.id_viewpoint ){
 185                   u32 id = mdl_entity_id_id( item->page.id_viewpoint );
 186                   menu.cam = mdl_arritm( &menu.cameras, id );
 187                }
 188                vg_info( "menu page: %u (%p,%p)\n",
 189                         menu.page, menu.loc, menu.cam );
 190             }
 191             return;
 192          }
 193       }
 194    }
 195 }
 196
 197 /*
 198  * activate a pressable type
 199  */
 200 static void menu_trigger_item( ent_menuitem *item )
 201 {
 202    if     ( item->type == k_ent_menuitem_type_event_button ){
 203       u32 q = item->button.pstr;
 204
 205       if( MDL_CONST_PSTREQ( &menu.model, q, "quit" ) ){
 206          vg.window_should_close = 1;
 207       }
 208       else if( MDL_CONST_PSTREQ( &menu.model, q, "reset_nearest" ) ){
 209          localplayer_cmd_respawn( 0, NULL );
 210
 211          menu.page_depth = 0;
 212          menu.active = 0;
 213          menu.page = 0xffffffff;
 214       }
 215       else if( MDL_CONST_PSTREQ( &menu.model, q, "reset_home" ) ){
 216          world_static.active_world = 0;
 217          world_static.active_trigger_volume_count = 0;
 218          localplayer.viewable_world = world_current_instance();
 219          localplayer_cmd_respawn( 1, (const char *[]){"start"} );
 220
 221          menu.page_depth = 0;
 222          menu.active = 0;
 223          menu.page = 0xffffffff;
 224       }
 225       else if( MDL_CONST_PSTREQ( &menu.model, q, "credits" ) ){
 226          menu.credits_open = 1;
 227       }
 228       else if( MDL_CONST_PSTREQ( &menu.model, q, "workshop" ) ){
 229          workshop_submit_command(0,NULL);
 230       }
 231    }
 232    else if( item->type == k_ent_menuitem_type_page_button ){
 233       menu_open_page( mdl_pstr( &menu.model, item->button.pstr ) );
 234    }
 235    else if( item->type == k_ent_menuitem_type_toggle ){
 236       if( item->pi32 ){
 237          *item->pi32 = *item->pi32 ^ 0x1;
 238       }
 239    }
 240 }
 241
 242 static f32 menu_slider_snap( f32 value, f32 old, f32 notch )
 243 {
 244    f32 const k_epsilon = 0.0125f;
 245
 246    if( fabsf(notch-value) < k_epsilon ){
 247       if( fabsf(notch-old) > k_epsilon ){
 248          audio_lock();
 249          audio_oneshot( &audio_ui[0], 1.0f, 0.0f );
 250          audio_unlock();
 251       }
 252
 253       return notch;
 254    }
 255    else
 256       return value;
 257 }
 258
 259 /*
 260  * Run from vg_gui every frame
 261  */
 262 static void menu_update(void)
 263 {
 264    if( workshop_form.page != k_workshop_form_hidden ){
 265       return;
 266    }
 267
 268    int escape = button_down( k_srbind_mback );
 269    if( menu.credits_open ){
 270       if( escape ){
 271          menu.credits_open = 0;
 272       }
 273       return;
 274    }
 275
 276    if( button_down( k_srbind_mopen ) ){
 277       if( !menu.active && !menu.disable_open ){
 278          menu.active = 1;
 279          menu.page = 0xffffffff;
 280          menu_open_page( "Main Menu" );
 281          return;
 282       }
 283    }
 284
 285    if( !menu.active ) return;
 286
 287    enum menu_input_mode prev_mode = menu.input_mode;
 288
 289    /* get buttons inputs
 290     * -------------------------------------------------------------------*/
 291    int ml = button_down( k_srbind_mleft ),
 292        mr = button_down( k_srbind_mright ),
 293        mu = button_down( k_srbind_mup ),
 294        md = button_down( k_srbind_mdown ),
 295        mh = ml-mr,
 296        mv = mu-md,
 297        enter = button_down( k_srbind_maccept );
 298
 299    if( mh||mv||enter ){
 300       menu.input_mode = k_menu_input_mode_keys;
 301    }
 302
 303    /* get mouse inputs
 304     * --------------------------------------------------------------------*/
 305    menu.mouse_dist += v2_length( vg.mouse_delta ); /* TODO: Move to UI */
 306    menu.mouse_track += vg.time_frame_delta;
 307    if( menu.mouse_track > 0.1f ){
 308       menu.mouse_track = fmodf( menu.mouse_track, 0.1f );
 309       if( menu.mouse_dist > 10.0f ){
 310          menu.input_mode = k_menu_input_mode_mouse;
 311          menu.mouse_dist = 0.0f;
 312       }
 313    }
 314
 315    if( ui_clicking(UI_MOUSE_LEFT) || ui_clicking(UI_MOUSE_RIGHT) ){
 316       menu.input_mode = k_menu_input_mode_mouse;
 317    }
 318
 319    if( menu.input_mode == k_menu_input_mode_mouse ){
 320       /*
 321        * handle mouse input
 322        * ------------------------------------------------------------*/
 323       vg_ui.wants_mouse = 1;
 324
 325       /*
 326        * this raycasting is super cumbersome because all the functions were
 327        * designed for other purposes. we dont care though.
 328        */
 329       m4x4f inverse;
 330       m4x4_inv( menu.view.mtx.p, inverse );
 331       v4f coords;
 332       coords[0] = vg_ui.mouse[0];
 333       coords[1] = vg.window_y - vg_ui.mouse[1];
 334       v2_div( coords, (v2f){ vg.window_x, vg.window_y }, coords );
 335       v2_muls( coords, 2.0f, coords );
 336       v2_add( coords, (v2f){-1.0f,-1.0f}, coords );
 337       coords[2] = 1.0f;
 338       coords[3] = 1.0f;
 339       m4x4_mulv( inverse, coords, coords );
 340       v3f ray;
 341       m3x3_mulv( menu.view.transform, coords, ray );
 342       v3_normalize( ray );
 343
 344       if( menu.loc && (menu.loc->type == k_ent_menuitem_type_slider) &&
 345           ui_clicking(UI_MOUSE_LEFT) && menu.loc->pf32 ){
 346
 347          u32 il = mdl_entity_id_id( menu.loc->slider.id_min ),
 348              ir = mdl_entity_id_id( menu.loc->slider.id_max );
 349          ent_marker *ml = mdl_arritm( &menu.markers, il ),
 350                     *mr = mdl_arritm( &menu.markers, ir );
 351
 352          v3f q2;
 353          v3_muladds( menu.view.pos, ray, 100.0f, q2 );
 354
 355          f32 s,t;
 356          v3f c1, c2;
 357          v3f p1, q1, v0;
 358          v3_sub( mr->transform.co, ml->transform.co, v0 );
 359          v3_muladds( ml->transform.co, v0, -1.0f, p1 );
 360          v3_muladds( mr->transform.co, v0,  1.0f, q1 );
 361          closest_segment_segment( p1, q1, menu.view.pos, q2, &s,&t, c1,c2 );
 362
 363          s-=(1.0f/3.0f);
 364          s/=(1.0f/3.0f);
 365
 366          if( ui_click_down(UI_MOUSE_LEFT) ){
 367             menu.slider_offset = *menu.loc->pf32 - s;
 368          }
 369
 370          f32 newvalue = vg_clampf( s+menu.slider_offset, 0.0f, 1.0f );
 371
 372          newvalue = menu_slider_snap( newvalue, *menu.loc->pf32, 0.00f );
 373          newvalue = menu_slider_snap( newvalue, *menu.loc->pf32, 1.00f );
 374          newvalue = menu_slider_snap( newvalue, *menu.loc->pf32, 0.25f );
 375          newvalue = menu_slider_snap( newvalue, *menu.loc->pf32, 0.50f );
 376          newvalue = menu_slider_snap( newvalue, *menu.loc->pf32, 0.75f );
 377
 378          *menu.loc->pf32 = newvalue;
 379          return;
 380       }
 381
 382       ent_menuitem *hit_item = NULL;
 383
 384       for( u32 i=0; i<mdl_arrcount(&menu.items); i++ ){
 385          ent_menuitem *item = mdl_arritm( &menu.items, i );
 386
 387          if( item->type == k_ent_menuitem_type_page ) continue;
 388          if( item->type == k_ent_menuitem_type_visual ) continue;
 389          if( !(item->groups & (0x1<<menu.page)) ) continue;
 390
 391          ent_menuitem *ray_item = item;
 392
 393          if( item->type == k_ent_menuitem_type_slider ){
 394             u32 subtarget = mdl_entity_id_id( item->slider.id_handle );
 395             ray_item = mdl_arritm( &menu.items, subtarget );
 396          }
 397
 398          v3f local_ray,
 399              local_co;
 400
 401          m4x3f inverse_mtx;
 402          mdl_transform_m4x3( &ray_item->transform, inverse_mtx );
 403          m4x3_invert_full( inverse_mtx, inverse_mtx );
 404
 405          m4x3_mulv( inverse_mtx, menu.view.transform[3], local_co );
 406          m3x3_mulv( inverse_mtx, ray, local_ray );
 407          v3_normalize( local_ray );
 408
 409          local_ray[0] = 1.0f/local_ray[0];
 410          local_ray[1] = 1.0f/local_ray[1];
 411          local_ray[2] = 1.0f/local_ray[2];
 412
 413          for( u32 j=0; j<ray_item->submesh_count; j++ ){
 414             mdl_submesh *sm = mdl_arritm( &menu.model.submeshs,
 415                                            ray_item->submesh_start + j );
 416             if( ray_aabb1( sm->bbx, local_co, local_ray, 1000.0f ) ){
 417                hit_item = item;
 418                break;
 419             }
 420          }
 421       }
 422
 423       if( hit_item != menu.loc ){
 424          menu.loc = hit_item;
 425       }
 426
 427       if( escape ){
 428          menu_back_page();
 429       }
 430       else if( menu.loc ){
 431          if( ui_click_down( UI_MOUSE_LEFT ) ){
 432             menu_trigger_item( menu.loc );
 433          }
 434       }
 435    }
 436    else if( menu.input_mode == k_menu_input_mode_keys ){
 437       /*
 438        * handle button input
 439        * ------------------------------------------------------------*/
 440       if( (prev_mode != k_menu_input_mode_keys) && !menu.loc ){
 441          for( u32 i=0; i<mdl_arrcount(&menu.items); i++ ){
 442             ent_menuitem *item = mdl_arritm( &menu.items, i );
 443
 444             if( (item->type != k_ent_menuitem_type_page) &&
 445                 (item->type != k_ent_menuitem_type_visual) &&
 446                 (item->groups & (0x1<<menu.page)) ){
 447                menu.loc = item;
 448             }
 449          }
 450       }
 451
 452       if( !menu.loc ) vg_fatal_error( "No location\n" );
 453
 454       if( menu.loc->type == k_ent_menuitem_type_slider && menu.loc->pf32 ){
 455          f32 move = 0.0f;
 456
 457          if( vg_input.display_input_method == k_input_method_controller ){
 458             move += button_press( k_srbind_mright );
 459             move -= button_press( k_srbind_mleft );
 460          }
 461          else{
 462             move += axis_state( k_sraxis_mbrowse_h );
 463          }
 464
 465          move *= vg.time_frame_delta;
 466          *menu.loc->pf32 = vg_clampf( *menu.loc->pf32 + move, 0.0f, 1.0f );
 467
 468          mh = 0;
 469       }
 470
 471       if( escape ){
 472          menu_back_page();
 473       }
 474       else if( enter ){
 475          menu_trigger_item( menu.loc );
 476       }
 477       else if( mh||mv ){
 478          v3f opt;
 479          v3_zero( opt );
 480          f32 best = 0.707f;
 481          ent_menuitem *nextpos = NULL;
 482
 483          opt[0] += mh;
 484          opt[2] += mv;
 485          mdl_transform_vector( &menu.cam->transform, opt, opt );
 486
 487          for( u32 i=0; i<4; i++ ){
 488             u32 id = menu.loc->id_links[i];
 489             if( !id ) continue;
 490             u32 index = mdl_entity_id_id( id );
 491
 492             ent_menuitem *other = mdl_arritm( &menu.items, index );
 493             v3f delta;
 494             v3_sub( menu.loc->transform.co, other->transform.co, delta );
 495             v3_normalize( delta );
 496
 497             f32 score = v3_dot( delta, opt );
 498             if( score > best ){
 499                best = score;
 500                nextpos = other;
 501             }
 502          }
 503
 504          if( nextpos ){
 505             menu.loc = nextpos;
 506          }
 507       }
 508    }
 509 }
 510
 511 /*
 512  * Run from vg_gui when active
 513  */
 514 VG_STATIC void menu_render(void)
 515 {
 516    glEnable(GL_BLEND);
 517    glDisable(GL_DEPTH_TEST);
 518    glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
 519    glBlendEquation(GL_FUNC_ADD);
 520
 521    shader_blitcolour_use();
 522    v4f colour;
 523    ui_hex_to_norm( ui_colour( k_ui_bg+3 ), colour );
 524    colour[3] = 0.5f;
 525
 526    shader_blitcolour_uColour( colour );
 527    render_fsquad();
 528
 529    if( (workshop_form.page != k_workshop_form_hidden) ||
 530        (vg_ui.focused_control_type != k_ui_control_none) ){
 531       return;
 532    }
 533
 534    if( menu.credits_open ){
 535       ui_rect panel = { 0,0, 460, 400 },
 536               screen = { 0,0, vg.window_x,vg.window_y };
 537       ui_rect_center( screen, panel );
 538       ui_fill( panel, ui_colour(k_ui_bg) );
 539       ui_outline( panel, 1, ui_colour(k_ui_fg) );
 540       ui_rect_pad( panel, (ui_px[]){8,8} );
 541
 542       ui_rect title;
 543       ui_split( panel, k_ui_axis_h, 28*2, 0, title, panel );
 544       ui_text( title, "Skate Rift - Credits", 2, k_ui_align_middle_center, 0 );
 545       ui_split( panel, k_ui_axis_h, 28, 0, title, panel );
 546       ui_text( title, "Mt.Zero Software", 1, k_ui_align_middle_center, 0 );
 547
 548       ui_split( panel, k_ui_axis_h, 8, 0, title, panel );
 549       ui_split( panel, k_ui_axis_h, 28, 0, title, panel );
 550       ui_text( title, "A game by Harry Godden", 1,
 551                k_ui_align_middle_center, 0 );
 552
 553       ui_split( panel, k_ui_axis_h, 8, 0, title, panel );
 554       ui_split( panel, k_ui_axis_h, 28*2, 0, title, panel );
 555       ui_text( title, "Free Software", 2, k_ui_align_middle_center, 0 );
 556
 557       ui_split( panel, k_ui_axis_h, 8, 0, title, panel );
 558       ui_text( panel,
 559             "Sam Lantinga       - SDL2 - libsdl.org\n"
 560             "Hunter WB          - Anyascii\n"
 561             "David Herberth     - GLAD\n"
 562             "Dominic Szablewski - QOI - qoiformat.org\n"
 563             "Sean Barrett       - stb_image,stb_vorbis,stb_include\n"
 564             "Khronos Group      - OpenGL\n"
 565             , 1, k_ui_align_left, 0 );
 566       return;
 567    }
 568
 569    glEnable( GL_DEPTH_TEST );
 570    glDisable( GL_BLEND );
 571
 572    f32 rate = vg.time_frame_delta * 12.0f;
 573
 574    if( menu.cam ){
 575       camera target;
 576
 577       target.fov = menu.cam->fov;
 578       v3_copy( menu.cam->transform.co, target.pos );
 579
 580       v3f v0;
 581       mdl_transform_vector( &menu.cam->transform, (v3f){0.0f,-1.0f,0.0f}, v0 );
 582       player_vector_angles( target.angles, v0, 1.0f, 0.0f );
 583
 584       camera_lerp( &menu.view, &target, rate, &menu.view );
 585
 586       menu.view.farz = 150.0f;
 587       menu.view.nearz = 0.01f;
 588
 589       camera_update_transform( &menu.view );
 590       camera_update_view( &menu.view );
 591       camera_update_projection( &menu.view );
 592       camera_finalize( &menu.view );
 593    }
 594    else return;
 595
 596    shader_model_menu_use();
 597    shader_model_menu_uTexMain( 1 );
 598    glActiveTexture( GL_TEXTURE1 );
 599    glBindTexture( GL_TEXTURE_2D, menu.texture );
 600    shader_model_menu_uPv( menu.view.mtx.pv );
 601    shader_model_menu_uPvmPrev( menu.view.mtx_prev.pv );
 602
 603    mesh_bind( &menu.mesh );
 604
 605    v4f white, blue;
 606
 607    ui_hex_to_norm( ui_colour( k_ui_fg ), white );
 608    ui_hex_to_norm( ui_colour( k_ui_orange+k_ui_brighter ), blue );
 609
 610    for( u32 i=0; i<mdl_arrcount(&menu.items); i++ ){
 611       ent_menuitem *item = mdl_arritm( &menu.items, i );
 612
 613       if(   item->type == k_ent_menuitem_type_page ) continue;
 614       if( !(item->groups & (0x1 << menu.page)) ) continue;
 615
 616       int selected = 0;
 617
 618       if( menu.loc ){
 619          if( menu.loc->type == k_ent_menuitem_type_slider ){
 620             u32 subid = menu.loc->slider.id_handle;
 621             if( item == mdl_arritm( &menu.items, mdl_entity_id_id(subid) ))
 622                selected = 1;
 623          }
 624          else{
 625             if( item == menu.loc )
 626                selected = 1;
 627          }
 628       }
 629
 630       item->factive = vg_lerpf( item->factive, selected, rate );
 631       v4f colour;
 632       v4_lerp( white, blue, item->factive, colour );
 633       shader_model_menu_uColour( colour );
 634
 635       f32 scale = 1.0f+item->factive*0.1f;
 636
 637       m4x3f mmdl;
 638       mdl_transform transform = item->transform;
 639       v3_muls( transform.s, scale, transform.s );
 640       mdl_transform_m4x3( &transform, mmdl );
 641
 642       if( item->type == k_ent_menuitem_type_toggle && item->pi32 ){
 643          u32 subid = mdl_entity_id_id( item->checkmark.id_check );
 644          ent_menuitem *subitem = mdl_arritm( &menu.items, subid );
 645
 646          v3_muladds( item->transform.co, item->checkmark.offset, scale,
 647                      subitem->transform.co );
 648
 649          subitem->fvisible = vg_lerpf( subitem->fvisible, *item->pi32, rate );
 650          v3_fill( subitem->transform.s, subitem->fvisible );
 651       }
 652       else if( item->type == k_ent_menuitem_type_slider && item->pf32 ){
 653          u32 il = mdl_entity_id_id( item->slider.id_min ),
 654              ir = mdl_entity_id_id( item->slider.id_max ),
 655              ih = mdl_entity_id_id( item->slider.id_handle );
 656          ent_marker *ml = mdl_arritm( &menu.markers, il ),
 657                     *mr = mdl_arritm( &menu.markers, ir );
 658          ent_menuitem *handle = mdl_arritm( &menu.items, ih );
 659
 660          v3_lerp( ml->transform.co, mr->transform.co, *item->pf32,
 661                   handle->transform.co );
 662       }
 663
 664       shader_model_menu_uMdl( mmdl );
 665
 666       for( u32 j=0; j<item->submesh_count; j++ ){
 667          u32 index = item->submesh_start + j;
 668          mdl_draw_submesh( mdl_arritm( &menu.model.submeshs, index ));
 669       }
 670    }
 671 }
 672
 673 #endif /* MENU_H */