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