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