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    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_keys,
  25       k_menu_input_mode_mouse
  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       else if( MDL_CONST_PSTREQ( &menu.model, q, "credits" ) ){
 217          menu.credits_open = 1;
 218       }
 219       else if( MDL_CONST_PSTREQ( &menu.model, q, "workshop" ) ){
 220          workshop_submit_command(0,NULL);
 221       }
 222    }
 223    else if( item->type == k_ent_menuitem_type_page_button ){
 224       menu_open_page( mdl_pstr( &menu.model, item->button.pstr ) );
 225    }
 226    else if( item->type == k_ent_menuitem_type_toggle ){
 227       if( item->pi32 ){
 228          *item->pi32 = *item->pi32 ^ 0x1;
 229       }
 230    }
 231 }
 232
 233 static f32 menu_slider_snap( f32 value, f32 old, f32 notch )
 234 {
 235    f32 const k_epsilon = 0.0125f;
 236
 237    if( fabsf(notch-value) < k_epsilon ){
 238       if( fabsf(notch-old) > k_epsilon ){
 239          audio_lock();
 240          audio_oneshot( &audio_ui[0], 1.0f, 0.0f );
 241          audio_unlock();
 242       }
 243
 244       return notch;
 245    }
 246    else
 247       return value;
 248 }
 249
 250 /*
 251  * Run from vg_gui every frame
 252  */
 253 static void menu_update(void)
 254 {
 255    if( workshop_form.page != k_workshop_form_hidden ){
 256       return;
 257    }
 258
 259    int escape = button_down( k_srbind_mback );
 260    if( menu.credits_open ){
 261       if( escape ){
 262          menu.credits_open = 0;
 263       }
 264       return;
 265    }
 266
 267    if( button_down( k_srbind_mopen ) ){
 268       if( !menu.active && !menu.disable_open ){
 269          menu.active = 1;
 270          menu.page = 0xffffffff;
 271          menu_open_page( "Main Menu" );
 272          return;
 273       }
 274    }
 275
 276    menu.factive = vg_lerpf( menu.factive, menu.active,
 277                             vg.time_frame_delta * 6.0f );
 278
 279    if( !menu.active ) return;
 280
 281    enum menu_input_mode prev_mode = menu.input_mode;
 282
 283    /* get buttons inputs
 284     * -------------------------------------------------------------------*/
 285    int ml = button_down( k_srbind_mleft ),
 286        mr = button_down( k_srbind_mright ),
 287        mu = button_down( k_srbind_mup ),
 288        md = button_down( k_srbind_mdown ),
 289        mh = ml-mr,
 290        mv = mu-md,
 291        enter = button_down( k_srbind_maccept );
 292
 293    if( mh||mv||enter ){
 294       menu.input_mode = k_menu_input_mode_keys;
 295    }
 296
 297    /* get mouse inputs
 298     * --------------------------------------------------------------------*/
 299    menu.mouse_dist += v2_length( vg.mouse_delta ); /* TODO: Move to UI */
 300    menu.mouse_track += vg.time_frame_delta;
 301    if( menu.mouse_track > 0.1f ){
 302       menu.mouse_track = fmodf( menu.mouse_track, 0.1f );
 303       if( menu.mouse_dist > 10.0f ){
 304          menu.input_mode = k_menu_input_mode_mouse;
 305          menu.mouse_dist = 0.0f;
 306       }
 307    }
 308
 309    if( ui_clicking(UI_MOUSE_LEFT) || ui_clicking(UI_MOUSE_RIGHT) ){
 310       menu.input_mode = k_menu_input_mode_mouse;
 311    }
 312
 313    if( menu.input_mode == k_menu_input_mode_mouse ){
 314       /*
 315        * handle mouse input
 316        * ------------------------------------------------------------*/
 317       vg_ui.wants_mouse = 1;
 318
 319       /*
 320        * this raycasting is super cumbersome because all the functions were
 321        * designed for other purposes. we dont care though.
 322        */
 323       m4x4f inverse;
 324       m4x4_inv( menu.view.mtx.p, inverse );
 325       v4f coords;
 326       coords[0] = vg_ui.mouse[0];
 327       coords[1] = vg.window_y - vg_ui.mouse[1];
 328       v2_div( coords, (v2f){ vg.window_x, vg.window_y }, coords );
 329       v2_muls( coords, 2.0f, coords );
 330       v2_add( coords, (v2f){-1.0f,-1.0f}, coords );
 331       coords[2] = 1.0f;
 332       coords[3] = 1.0f;
 333       m4x4_mulv( inverse, coords, coords );
 334       v3f ray;
 335       m3x3_mulv( menu.view.transform, coords, ray );
 336       v3_normalize( ray );
 337
 338       if( menu.loc && (menu.loc->type == k_ent_menuitem_type_slider) &&
 339           ui_clicking(UI_MOUSE_LEFT) && menu.loc->pf32 ){
 340
 341          u32 il = mdl_entity_id_id( menu.loc->slider.id_min ),
 342              ir = mdl_entity_id_id( menu.loc->slider.id_max );
 343          ent_marker *ml = mdl_arritm( &menu.markers, il ),
 344                     *mr = mdl_arritm( &menu.markers, ir );
 345
 346          v3f q2;
 347          v3_muladds( menu.view.pos, ray, 100.0f, q2 );
 348
 349          f32 s,t;
 350          v3f c1, c2;
 351          v3f p1, q1, v0;
 352          v3_sub( mr->transform.co, ml->transform.co, v0 );
 353          v3_muladds( ml->transform.co, v0, -1.0f, p1 );
 354          v3_muladds( mr->transform.co, v0,  1.0f, q1 );
 355          closest_segment_segment( p1, q1, menu.view.pos, q2, &s,&t, c1,c2 );
 356
 357          s-=(1.0f/3.0f);
 358          s/=(1.0f/3.0f);
 359
 360          if( ui_click_down(UI_MOUSE_LEFT) ){
 361             menu.slider_offset = *menu.loc->pf32 - s;
 362          }
 363
 364          f32 newvalue = vg_clampf( s+menu.slider_offset, 0.0f, 1.0f );
 365
 366          newvalue = menu_slider_snap( newvalue, *menu.loc->pf32, 0.00f );
 367          newvalue = menu_slider_snap( newvalue, *menu.loc->pf32, 1.00f );
 368          newvalue = menu_slider_snap( newvalue, *menu.loc->pf32, 0.25f );
 369          newvalue = menu_slider_snap( newvalue, *menu.loc->pf32, 0.50f );
 370          newvalue = menu_slider_snap( newvalue, *menu.loc->pf32, 0.75f );
 371
 372          *menu.loc->pf32 = newvalue;
 373          return;
 374       }
 375
 376       ent_menuitem *hit_item = NULL;
 377
 378       for( u32 i=0; i<mdl_arrcount(&menu.items); i++ ){
 379          ent_menuitem *item = mdl_arritm( &menu.items, i );
 380
 381          if( item->type == k_ent_menuitem_type_page ) continue;
 382          if( item->type == k_ent_menuitem_type_visual ) continue;
 383          if( !(item->groups & (0x1<<menu.page)) ) continue;
 384
 385          ent_menuitem *ray_item = item;
 386
 387          if( item->type == k_ent_menuitem_type_slider ){
 388             u32 subtarget = mdl_entity_id_id( item->slider.id_handle );
 389             ray_item = mdl_arritm( &menu.items, subtarget );
 390          }
 391
 392          v3f local_ray,
 393              local_co;
 394
 395          m4x3f inverse_mtx;
 396          mdl_transform_m4x3( &ray_item->transform, inverse_mtx );
 397          m4x3_invert_full( inverse_mtx, inverse_mtx );
 398
 399          m4x3_mulv( inverse_mtx, menu.view.transform[3], local_co );
 400          m3x3_mulv( inverse_mtx, ray, local_ray );
 401          v3_normalize( local_ray );
 402
 403          local_ray[0] = 1.0f/local_ray[0];
 404          local_ray[1] = 1.0f/local_ray[1];
 405          local_ray[2] = 1.0f/local_ray[2];
 406
 407          for( u32 j=0; j<ray_item->submesh_count; j++ ){
 408             mdl_submesh *sm = mdl_arritm( &menu.model.submeshs,
 409                                            ray_item->submesh_start + j );
 410             if( ray_aabb1( sm->bbx, local_co, local_ray, 1000.0f ) ){
 411                hit_item = item;
 412                break;
 413             }
 414          }
 415       }
 416
 417       if( hit_item != menu.loc ){
 418          menu.loc = hit_item;
 419       }
 420
 421       if( escape ){
 422          menu_back_page();
 423       }
 424       else if( menu.loc ){
 425          if( ui_click_down( UI_MOUSE_LEFT ) ){
 426             menu_trigger_item( menu.loc );
 427          }
 428       }
 429    }
 430    else if( menu.input_mode == k_menu_input_mode_keys ){
 431       /*
 432        * handle button input
 433        * ------------------------------------------------------------*/
 434       if( (prev_mode != k_menu_input_mode_keys) && !menu.loc ){
 435          for( u32 i=0; i<mdl_arrcount(&menu.items); i++ ){
 436             ent_menuitem *item = mdl_arritm( &menu.items, i );
 437
 438             if( (item->type != k_ent_menuitem_type_page) &&
 439                 (item->type != k_ent_menuitem_type_visual) &&
 440                 (item->groups & (0x1<<menu.page)) ){
 441                menu.loc = item;
 442             }
 443          }
 444       }
 445
 446       if( !menu.loc ) vg_fatal_error( "No location\n" );
 447
 448       if( menu.loc->type == k_ent_menuitem_type_slider && menu.loc->pf32 ){
 449          f32 move = 0.0f;
 450
 451          if( vg_input.display_input_method == k_input_method_controller ){
 452             move += button_press( k_srbind_mright );
 453             move -= button_press( k_srbind_mleft );
 454          }
 455          else{
 456             move += axis_state( k_sraxis_mbrowse_h );
 457          }
 458
 459          move *= vg.time_frame_delta;
 460          *menu.loc->pf32 = vg_clampf( *menu.loc->pf32 + move, 0.0f, 1.0f );
 461
 462          mh = 0;
 463       }
 464
 465       if( escape ){
 466          menu_back_page();
 467       }
 468       else if( enter ){
 469          menu_trigger_item( menu.loc );
 470       }
 471       else if( mh||mv ){
 472          v3f opt;
 473          v3_zero( opt );
 474          f32 best = 0.707f;
 475          ent_menuitem *nextpos = NULL;
 476
 477          opt[0] += mh;
 478          opt[2] += mv;
 479          mdl_transform_vector( &menu.cam->transform, opt, opt );
 480
 481          for( u32 i=0; i<4; i++ ){
 482             u32 id = menu.loc->id_links[i];
 483             if( !id ) continue;
 484             u32 index = mdl_entity_id_id( id );
 485
 486             ent_menuitem *other = mdl_arritm( &menu.items, index );
 487             v3f delta;
 488             v3_sub( menu.loc->transform.co, other->transform.co, delta );
 489             v3_normalize( delta );
 490
 491             f32 score = v3_dot( delta, opt );
 492             if( score > best ){
 493                best = score;
 494                nextpos = other;
 495             }
 496          }
 497
 498          if( nextpos ){
 499             menu.loc = nextpos;
 500          }
 501       }
 502    }
 503 }
 504
 505 /*
 506  * Run from vg_gui when active
 507  */
 508 VG_STATIC void menu_render(void)
 509 {
 510    glEnable(GL_BLEND);
 511    glDisable(GL_DEPTH_TEST);
 512    glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
 513    glBlendEquation(GL_FUNC_ADD);
 514
 515    shader_blitcolour_use();
 516    v4f colour;
 517    ui_hex_to_norm( ui_colour( k_ui_bg+3 ), colour );
 518    colour[3] = 0.5f;
 519
 520    shader_blitcolour_uColour( colour );
 521    render_fsquad();
 522
 523    if( (workshop_form.page != k_workshop_form_hidden) ||
 524        (vg_ui.focused_control_type != k_ui_control_none) ){
 525       return;
 526    }
 527
 528    if( menu.credits_open ){
 529       ui_rect panel = { 0,0, 460, 400 },
 530               screen = { 0,0, vg.window_x,vg.window_y };
 531       ui_rect_center( screen, panel );
 532       ui_fill( panel, ui_colour(k_ui_bg) );
 533       ui_outline( panel, 1, ui_colour(k_ui_fg) );
 534       ui_rect_pad( panel, (ui_px[]){8,8} );
 535
 536       ui_rect title;
 537       ui_split( panel, k_ui_axis_h, 28*2, 0, title, panel );
 538       ui_text( title, "Skate Rift - Credits", 2, k_ui_align_middle_center, 0 );
 539       ui_split( panel, k_ui_axis_h, 28, 0, title, panel );
 540       ui_text( title, "Mt.Zero Software", 1, k_ui_align_middle_center, 0 );
 541
 542       ui_split( panel, k_ui_axis_h, 8, 0, title, panel );
 543       ui_split( panel, k_ui_axis_h, 28, 0, title, panel );
 544       ui_text( title, "A game by Harry Godden", 1,
 545                k_ui_align_middle_center, 0 );
 546
 547       ui_split( panel, k_ui_axis_h, 8, 0, title, panel );
 548       ui_split( panel, k_ui_axis_h, 28*2, 0, title, panel );
 549       ui_text( title, "Free Software", 2, k_ui_align_middle_center, 0 );
 550
 551       ui_split( panel, k_ui_axis_h, 8, 0, title, panel );
 552       ui_text( panel,
 553             "Sam Lantinga       - SDL2 - libsdl.org\n"
 554             "Hunter WB          - Anyascii\n"
 555             "David Herberth     - GLAD\n"
 556             "Dominic Szablewski - QOI - qoiformat.org\n"
 557             "Sean Barrett       - stb_image,stb_vorbis,stb_include\n"
 558             "Khronos Group      - OpenGL\n"
 559             , 1, k_ui_align_left, 0 );
 560       return;
 561    }
 562
 563    glEnable( GL_DEPTH_TEST );
 564    glDisable( GL_BLEND );
 565
 566    f32 rate = vg.time_frame_delta * 12.0f;
 567
 568    if( menu.cam ){
 569       camera target;
 570
 571       target.fov = menu.cam->fov;
 572       v3_copy( menu.cam->transform.co, target.pos );
 573
 574       v3f v0;
 575       mdl_transform_vector( &menu.cam->transform, (v3f){0.0f,-1.0f,0.0f}, v0 );
 576       player_vector_angles( target.angles, v0, 1.0f, 0.0f );
 577
 578       camera_lerp( &menu.view, &target, rate, &menu.view );
 579
 580       menu.view.farz = 150.0f;
 581       menu.view.nearz = 0.01f;
 582
 583       camera_update_transform( &menu.view );
 584       camera_update_view( &menu.view );
 585       camera_update_projection( &menu.view );
 586       camera_finalize( &menu.view );
 587    }
 588    else return;
 589
 590    shader_model_menu_use();
 591    shader_model_menu_uTexMain( 1 );
 592    glActiveTexture( GL_TEXTURE1 );
 593    glBindTexture( GL_TEXTURE_2D, menu.texture );
 594    shader_model_menu_uPv( menu.view.mtx.pv );
 595    shader_model_menu_uPvmPrev( menu.view.mtx_prev.pv );
 596
 597    mesh_bind( &menu.mesh );
 598
 599    v4f white, blue;
 600
 601    ui_hex_to_norm( ui_colour( k_ui_fg ), white );
 602    ui_hex_to_norm( ui_colour( k_ui_orange+k_ui_brighter ), blue );
 603
 604    for( u32 i=0; i<mdl_arrcount(&menu.items); i++ ){
 605       ent_menuitem *item = mdl_arritm( &menu.items, i );
 606
 607       if(   item->type == k_ent_menuitem_type_page ) continue;
 608       if( !(item->groups & (0x1 << menu.page)) ) continue;
 609
 610       int selected = 0;
 611
 612       if( menu.loc ){
 613          if( menu.loc->type == k_ent_menuitem_type_slider ){
 614             u32 subid = menu.loc->slider.id_handle;
 615             if( item == mdl_arritm( &menu.items, mdl_entity_id_id(subid) ))
 616                selected = 1;
 617          }
 618          else{
 619             if( item == menu.loc )
 620                selected = 1;
 621          }
 622       }
 623
 624       item->factive = vg_lerpf( item->factive, selected, rate );
 625       v4f colour;
 626       v4_lerp( white, blue, item->factive, colour );
 627       shader_model_menu_uColour( colour );
 628
 629       f32 scale = 1.0f+item->factive*0.1f;
 630
 631       m4x3f mmdl;
 632       mdl_transform transform = item->transform;
 633       v3_muls( transform.s, scale, transform.s );
 634       mdl_transform_m4x3( &transform, mmdl );
 635
 636       if( item->type == k_ent_menuitem_type_toggle && item->pi32 ){
 637          u32 subid = mdl_entity_id_id( item->checkmark.id_check );
 638          ent_menuitem *subitem = mdl_arritm( &menu.items, subid );
 639
 640          v3_muladds( item->transform.co, item->checkmark.offset, scale,
 641                      subitem->transform.co );
 642
 643          subitem->fvisible = vg_lerpf( subitem->fvisible, *item->pi32, rate );
 644          v3_fill( subitem->transform.s, subitem->fvisible );
 645       }
 646       else if( item->type == k_ent_menuitem_type_slider && item->pf32 ){
 647          u32 il = mdl_entity_id_id( item->slider.id_min ),
 648              ir = mdl_entity_id_id( item->slider.id_max ),
 649              ih = mdl_entity_id_id( item->slider.id_handle );
 650          ent_marker *ml = mdl_arritm( &menu.markers, il ),
 651                     *mr = mdl_arritm( &menu.markers, ir );
 652          ent_menuitem *handle = mdl_arritm( &menu.items, ih );
 653
 654          v3_lerp( ml->transform.co, mr->transform.co, *item->pf32,
 655                   handle->transform.co );
 656       }
 657
 658       shader_model_menu_uMdl( mmdl );
 659
 660       for( u32 j=0; j<item->submesh_count; j++ ){
 661          u32 index = item->submesh_start + j;
 662          mdl_draw_submesh( mdl_arritm( &menu.model.submeshs, index ));
 663       }
 664    }
 665 }
 666
 667 #endif /* MENU_H */