git.mutantstargoat.com Git - laserbrain_demo/blob - src/app.cc

   1 #include <stdio.h>
   2 #include <assert.h>
   3 #include <goatvr.h>
   4 #include "app.h"
   5 #include "opengl.h"
   6 #include "sdr.h"
   7 #include "texture.h"
   8 #include "mesh.h"
   9 #include "meshgen.h"
  10 #include "scene.h"
  11 #include "metascene.h"
  12 #include "datamap.h"
  13 #include "ui.h"
  14 #include "opt.h"
  15 #include "post.h"
  16 #include "renderer.h"
  17 #include "avatar.h"
  18 #include "vrinput.h"
  19 #include "exman.h"
  20 #include "blob_exhibit.h"
  21 #include "dbg_gui.h"
  22
  23 #define NEAR_CLIP       5.0
  24 #define FAR_CLIP        10000.0
  25
  26 static void draw_scene();
  27 static void toggle_flight();
  28 static void calc_framerate();
  29 static Ray calc_pick_ray(int x, int y, const Mat4 &view_mat, const Mat4 &proj_mat);
  30
  31 long time_msec;
  32 int win_width, win_height;
  33 float win_aspect;
  34 bool fb_srgb;
  35 bool opt_gear_wireframe;
  36
  37 TextureSet texman;
  38 SceneSet sceneman;
  39
  40 unsigned int sdr_ltmap, sdr_ltmap_notex;
  41
  42 int fpexcept_enabled;
  43
  44 static Avatar avatar;
  45
  46 static float cam_dist = 0.0;
  47 static float floor_y;   // last floor height
  48 static float user_eye_height = 165;
  49
  50 static float walk_speed = 300.0f;
  51 static float mouse_speed = 0.5f;
  52 static bool show_walk_mesh, noclip = false;
  53
  54 static bool have_headtracking, have_handtracking, should_swap;
  55
  56 static int prev_mx, prev_my;
  57 static bool bnstate[8];
  58 static bool keystate[256];
  59 static bool gpad_bnstate[64];
  60 static Vec2 joy_move, joy_look;
  61 static float joy_deadzone = 0.01;
  62
  63 static float framerate;
  64
  65 static Mat4 view_matrix, mouse_view_matrix, proj_matrix;
  66 static MetaScene *mscn;
  67 static unsigned int sdr_post_gamma;
  68
  69 static long prev_msec;
  70
  71 static ExhibitManager *exman;
  72 static BlobExhibit *blobs;
  73 static bool show_blobs;
  74
  75 static ExSelection ex_sel;
  76
  77 static Renderer *rend;
  78
  79
  80 bool app_init(int argc, char **argv)
  81 {
  82         set_log_file("demo.log");
  83
  84         char *env = getenv("FPEXCEPT");
  85         if(env && atoi(env)) {
  86                 info_log("enabling floating point exceptions\n");
  87                 fpexcept_enabled = 1;
  88                 enable_fpexcept();
  89         }
  90
  91         if(init_opengl() == -1) {
  92                 return false;
  93         }
  94
  95         if(!init_options(argc, argv, "demo.conf")) {
  96                 return false;
  97         }
  98         app_resize(opt.width, opt.height);
  99         app_fullscreen(opt.fullscreen);
 100
 101         if(opt.vr) {
 102                 if(goatvr_init() == -1) {
 103                         return false;
 104                 }
 105                 goatvr_set_origin_mode(GOATVR_HEAD);
 106                 goatvr_set_units_scale(100.0f);
 107
 108                 goatvr_startvr();
 109                 should_swap = goatvr_should_swap() != 0;
 110                 user_eye_height = goatvr_get_eye_height();
 111                 have_headtracking = goatvr_have_headtracking();
 112                 have_handtracking = goatvr_have_handtracking();
 113
 114                 goatvr_recenter();
 115         }
 116
 117         if(fb_srgb) {
 118                 int srgb_capable;
 119                 glGetIntegerv(GL_FRAMEBUFFER_SRGB_CAPABLE_EXT, &srgb_capable);
 120                 printf("Framebuffer %s sRGB-capable\n", srgb_capable ? "is" : "is not");
 121                 if(srgb_capable) {
 122                         glEnable(GL_FRAMEBUFFER_SRGB);
 123                 } else {
 124                         fb_srgb = 0;
 125                 }
 126         }
 127
 128         glEnable(GL_MULTISAMPLE);
 129         glEnable(GL_DEPTH_TEST);
 130         glEnable(GL_CULL_FACE);
 131         glEnable(GL_LIGHTING);
 132         glEnable(GL_NORMALIZE);
 133
 134         if(!init_debug_gui()) {
 135                 return false;
 136         }
 137
 138         Mesh::use_custom_sdr_attr = false;
 139
 140         float ambient[] = {0.0, 0.0, 0.0, 0.0};
 141         glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambient);
 142
 143         glClearColor(1, 1, 1, 1);
 144
 145         init_audio();
 146
 147         if(!init_vrhands()) {
 148                 return false;
 149         }
 150
 151         mscn = new MetaScene;
 152         if(!mscn->load(opt.scenefile ? opt.scenefile : "data/museum.scene")) {
 153                 return false;
 154         }
 155
 156         avatar.pos = mscn->start_pos;
 157         Vec3 dir = rotate(Vec3(0, 0, 1), mscn->start_rot);
 158         dir.y = 0;
 159         avatar.body_rot = rad_to_deg(acos(dot(dir, Vec3(0, 0, 1))));
 160
 161         exman = new ExhibitManager;
 162         /*
 163         if(!exman->load(mscn, "data/exhibits")) {
 164                 //return false;
 165         }
 166         */
 167
 168         blobs = new BlobExhibit;
 169         blobs->node = new SceneNode;
 170         blobs->init();
 171         blobs->node->set_position(Vec3(-680, 160, -100));
 172         blobs->node->set_scaling(Vec3(28, 28, 28));
 173         blobs->node->update(0);
 174
 175         exman->add(blobs);
 176
 177         if(!(sdr_ltmap_notex = create_program_load("sdr/lightmap.v.glsl", "sdr/lightmap-notex.p.glsl"))) {
 178                 return false;
 179         }
 180         set_uniform_int(sdr_ltmap_notex, "texmap", MTL_TEX_DIFFUSE);
 181         set_uniform_int(sdr_ltmap_notex, "lightmap", MTL_TEX_LIGHTMAP);
 182
 183         if(!(sdr_ltmap = create_program_load("sdr/lightmap.v.glsl", "sdr/lightmap-tex.p.glsl"))) {
 184                 return false;
 185         }
 186         set_uniform_int(sdr_ltmap, "texmap", MTL_TEX_DIFFUSE);
 187         set_uniform_int(sdr_ltmap, "lightmap", MTL_TEX_LIGHTMAP);
 188
 189         if(!fb_srgb) {
 190                 sdr_post_gamma = create_program_load("sdr/post_gamma.v.glsl", "sdr/post_gamma.p.glsl");
 191         }
 192
 193         rend = new Renderer;
 194         rend->set_scene(mscn);
 195
 196         glUseProgram(0);
 197
 198         if(opt.vr || opt.fullscreen) {
 199                 app_grab_mouse(true);
 200         }
 201
 202         if(mscn->music && opt.music) {
 203                 mscn->music->play(AUDIO_PLAYMODE_LOOP);
 204         }
 205         return true;
 206 }
 207
 208 void app_cleanup()
 209 {
 210         if(mscn->music) {
 211                 mscn->music->stop();
 212         }
 213         destroy_audio();
 214
 215         app_grab_mouse(false);
 216         if(opt.vr) {
 217                 goatvr_shutdown();
 218         }
 219         destroy_vrhands();
 220
 221         delete rend;
 222
 223         delete exman;
 224
 225         texman.clear();
 226         sceneman.clear();
 227
 228         cleanup_debug_gui();
 229 }
 230
 231 static bool constrain_walk_mesh(const Vec3 &v, Vec3 *newv)
 232 {
 233         Mesh *wm = mscn->walk_mesh;
 234         if(!wm) {
 235                 *newv = v;
 236                 return true;
 237         }
 238
 239         Ray downray = Ray(v, Vec3(0, -1, 0));
 240         HitPoint hit;
 241         if(mscn->walk_mesh->intersect(downray, &hit)) {
 242                 *newv = hit.pos;
 243                 newv->y += user_eye_height;
 244                 return true;
 245         }
 246         return false;
 247 }
 248
 249 static void update(float dt)
 250 {
 251         texman.update();
 252         sceneman.update();
 253
 254         mscn->update(dt);
 255         exman->update(dt);
 256
 257         float speed = walk_speed * dt;
 258         Vec3 dir;
 259
 260         // joystick
 261         float jdeadsq = joy_deadzone * joy_deadzone;
 262         float jmove_lensq = length_sq(joy_move);
 263         float jlook_lensq = length_sq(joy_look);
 264
 265         if(jmove_lensq > jdeadsq) {
 266                 float len = sqrt(jmove_lensq);
 267                 jmove_lensq -= jdeadsq;
 268
 269                 float mag = len * len;
 270                 dir.x += mag * joy_move.x / len * 2.0 * speed;
 271                 dir.z += mag * joy_move.y / len * 2.0 * speed;
 272         }
 273         if(jlook_lensq > jdeadsq) {
 274                 float len = sqrt(jlook_lensq);
 275                 jlook_lensq -= jdeadsq;
 276
 277                 float mag = len * len;
 278                 avatar.body_rot += mag * joy_look.x / len * 200.0 * dt;
 279                 avatar.head_alt += mag * joy_look.y / len * 100.0 * dt;
 280                 if(avatar.head_alt < -90.0f) avatar.head_alt = -90.0f;
 281                 if(avatar.head_alt > 90.0f) avatar.head_alt = 90.0f;
 282         }
 283
 284         // keyboard move
 285         if(keystate[(int)'w']) {
 286                 dir.z -= speed;
 287         }
 288         if(keystate[(int)'s']) {
 289                 dir.z += speed;
 290         }
 291         if(keystate[(int)'d']) {
 292                 dir.x += speed;
 293         }
 294         if(keystate[(int)'a']) {
 295                 dir.x -= speed;
 296         }
 297         if(keystate[(int)'q'] || gpad_bnstate[GPAD_UP]) {
 298                 avatar.pos.y += speed;
 299         }
 300         if(keystate[(int)'z'] || gpad_bnstate[GPAD_DOWN]) {
 301                 avatar.pos.y -= speed;
 302         }
 303
 304         float theta = M_PI * avatar.body_rot / 180.0f;
 305         Vec3 newpos;
 306         newpos.x = avatar.pos.x + cos(theta) * dir.x - sin(theta) * dir.z;
 307         newpos.y = avatar.pos.y;
 308         newpos.z = avatar.pos.z + sin(theta) * dir.x + cos(theta) * dir.z;
 309
 310         if(noclip) {
 311                 avatar.pos = newpos;
 312         } else {
 313                 if(!constrain_walk_mesh(newpos, &avatar.pos)) {
 314                         float dtheta = M_PI / 32.0;
 315                         float theta = dtheta;
 316                         Vec2 dir2d = newpos.xz() - avatar.pos.xz();
 317
 318                         for(int i=0; i<16; i++) {
 319                                 Vec2 dvec = rotate(dir2d, theta);
 320                                 Vec3 pos = avatar.pos + Vec3(dvec.x, 0, dvec.y);
 321                                 if(constrain_walk_mesh(pos, &avatar.pos)) {
 322                                         break;
 323                                 }
 324                                 dvec = rotate(dir2d, -theta);
 325                                 pos = avatar.pos + Vec3(dvec.x, 0, dvec.y);
 326                                 if(constrain_walk_mesh(pos, &avatar.pos)) {
 327                                         break;
 328                                 }
 329                                 theta += dtheta;
 330                         }
 331                 }
 332                 floor_y = avatar.pos.y - user_eye_height;
 333         }
 334
 335         // TODO move to avatar
 336         // calculate mouselook view matrix
 337         mouse_view_matrix = Mat4::identity;
 338         mouse_view_matrix.pre_translate(0, 0, -cam_dist);
 339         if(!have_headtracking) {
 340                 mouse_view_matrix.pre_rotate_x(deg_to_rad(avatar.head_alt));
 341         }
 342         mouse_view_matrix.pre_rotate_y(deg_to_rad(avatar.body_rot));
 343         mouse_view_matrix.pre_translate(-avatar.pos.x, -avatar.pos.y, -avatar.pos.z);
 344
 345         // update hand-tracking
 346         if(have_handtracking) {
 347                 update_vrhands(&avatar);
 348         }
 349 }
 350
 351 static void set_light(int idx, const Vec3 &pos, const Vec3 &color)
 352 {
 353         unsigned int lt = GL_LIGHT0 + idx;
 354         float posv[] = { pos.x, pos.y, pos.z, 1 };
 355         float colv[] = { color.x, color.y, color.z, 1 };
 356
 357         glEnable(lt);
 358         glLightfv(lt, GL_POSITION, posv);
 359         glLightfv(lt, GL_DIFFUSE, colv);
 360         glLightfv(lt, GL_SPECULAR, colv);
 361 }
 362
 363 void app_display()
 364 {
 365         float dt = (float)(time_msec - prev_msec) / 1000.0f;
 366         prev_msec = time_msec;
 367
 368         if(debug_gui) {
 369                 ImGui::GetIOPtr()->DeltaTime = dt;
 370                 ImGui::NewFrame();
 371
 372                 ImGui::ShowTestWindow();
 373         }
 374
 375         if(opt.vr) {
 376                 // VR mode
 377                 goatvr_draw_start();
 378                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 379
 380                 update(dt);
 381
 382                 for(int i=0; i<2; i++) {
 383                         // for each eye
 384                         goatvr_draw_eye(i);
 385
 386                         proj_matrix = goatvr_projection_matrix(i, NEAR_CLIP, FAR_CLIP);
 387                         glMatrixMode(GL_PROJECTION);
 388                         glLoadMatrixf(proj_matrix[0]);
 389
 390                         view_matrix = mouse_view_matrix * Mat4(goatvr_view_matrix(i));
 391                         glMatrixMode(GL_MODELVIEW);
 392                         glLoadMatrixf(view_matrix[0]);
 393
 394                         draw_scene();
 395                         if(have_handtracking) {
 396                                 draw_vrhands();
 397                         }
 398
 399                         if(debug_gui) {
 400                                 ImGui::Render();
 401                         }
 402                 }
 403                 goatvr_draw_done();
 404
 405                 if(should_swap) {
 406                         app_swap_buffers();
 407                 }
 408
 409         } else {
 410                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 411
 412                 update(dt);
 413
 414                 proj_matrix.perspective(deg_to_rad(50.0), win_aspect, NEAR_CLIP, FAR_CLIP);
 415                 glMatrixMode(GL_PROJECTION);
 416                 glLoadMatrixf(proj_matrix[0]);
 417
 418                 view_matrix = mouse_view_matrix;
 419                 glMatrixMode(GL_MODELVIEW);
 420                 glLoadMatrixf(view_matrix[0]);
 421
 422                 draw_scene();
 423
 424                 if(!fb_srgb && sdr_post_gamma) {
 425                         slow_post(sdr_post_gamma);
 426                         glUseProgram(0);
 427                 }
 428
 429                 if(debug_gui) {
 430                         ImGui::Render();
 431                 }
 432                 app_swap_buffers();
 433         }
 434         assert(glGetError() == GL_NO_ERROR);
 435
 436         calc_framerate();
 437 }
 438
 439
 440 static void draw_scene()
 441 {
 442         static const Vec3 lpos[] = { Vec3(-50, 75, 100), Vec3(100, 0, 30), Vec3(-10, -10, 60) };
 443         set_light(0, lpos[0], Vec3(1.0, 0.8, 0.7) * 0.8);
 444         set_light(1, lpos[1], Vec3(0.6, 0.7, 1.0) * 0.6);
 445         set_light(2, lpos[2], Vec3(0.8, 1.0, 0.8) * 0.3);
 446
 447         rend->draw();
 448         exman->draw();
 449
 450         /*
 451         if(have_handtracking) {
 452                 Mat4 head_xform = inverse(mouse_view_matrix);//goatvr_head_matrix();
 453                 Mat4 head_dir_xform = head_xform.upper3x3();
 454
 455                 glUseProgram(0);
 456                 glPushAttrib(GL_ENABLE_BIT);
 457                 glDisable(GL_LIGHTING);
 458                 glBegin(GL_LINES);
 459                 for(int i=0; i<2; i++) {
 460                         if(hand[i].valid) {
 461                                 glColor3f(i, 1 - i, i);
 462                         } else {
 463                                 glColor3f(0.5, 0.5, 0.5);
 464                         }
 465                         Vec3 v = head_xform * hand[i].pos;
 466                         Vec3 dir = head_dir_xform * rotate(Vec3(0, 0, -1), hand[i].rot) * 20.0f;
 467                         Vec3 up = head_dir_xform * rotate(Vec3(0, 1, 0), hand[i].rot) * 10.0f;
 468                         Vec3 right = head_dir_xform * rotate(Vec3(1, 0, 0), hand[i].rot) * 10.0f;
 469
 470                         glVertex3f(v.x, v.y, v.z);
 471                         glVertex3f(v.x + dir.x, v.y + dir.y, v.z + dir.z);
 472                         glVertex3f(v.x - right.x, v.y - right.y, v.z - right.z);
 473                         glVertex3f(v.x + right.x, v.y + right.y, v.z + right.z);
 474                         glVertex3f(v.x - up.x, v.y - up.y, v.z - up.z);
 475                         glVertex3f(v.x + up.x, v.y + up.y, v.z + up.z);
 476                 }
 477                 glEnd();
 478                 glPopAttrib();
 479         }
 480         */
 481
 482         if(show_walk_mesh && mscn->walk_mesh) {
 483                 glPushAttrib(GL_ENABLE_BIT);
 484                 glEnable(GL_BLEND);
 485                 glBlendFunc(GL_ONE, GL_ONE);
 486                 glDisable(GL_LIGHTING);
 487                 glEnable(GL_POLYGON_OFFSET_FILL);
 488
 489                 glUseProgram(0);
 490
 491                 glPolygonOffset(-1, 1);
 492                 glDepthMask(0);
 493
 494                 glColor3f(0.3, 0.08, 0.01);
 495                 mscn->walk_mesh->draw();
 496
 497                 glDepthMask(1);
 498
 499                 glPopAttrib();
 500         }
 501
 502         print_text(Vec2(9 * win_width / 10, 20), Vec3(1, 1, 0), "fps: %.1f", framerate);
 503         draw_ui();
 504 }
 505
 506
 507 void app_reshape(int x, int y)
 508 {
 509         glViewport(0, 0, x, y);
 510         goatvr_set_fb_size(x, y, 1.0f);
 511         debug_gui_reshape(x, y);
 512 }
 513
 514 void app_keyboard(int key, bool pressed)
 515 {
 516         unsigned int mod = app_get_modifiers();
 517
 518         if(debug_gui && !(pressed && (key == '`' || key == 27))) {
 519                 debug_gui_key(key, pressed, mod);
 520                 return; // ignore all keystrokes when GUI is visible
 521         }
 522
 523         if(pressed) {
 524                 switch(key) {
 525                 case 27:
 526                         app_quit();
 527                         break;
 528
 529                 case '\n':
 530                 case '\r':
 531                         if(mod & MOD_ALT) {
 532                                 app_toggle_fullscreen();
 533                         }
 534                         break;
 535
 536                 case '`':
 537                         debug_gui = !debug_gui;
 538                         show_message("debug gui %s", debug_gui ? "enabled" : "disabled");
 539                         break;
 540
 541                 case 'm':
 542                         app_toggle_grab_mouse();
 543                         show_message("mouse %s", app_is_mouse_grabbed() ? "grabbed" : "released");
 544                         break;
 545
 546                 case 'w':
 547                         if(mod & MOD_CTRL) {
 548                                 show_walk_mesh = !show_walk_mesh;
 549                                 show_message("walk mesh: %s", show_walk_mesh ? "on" : "off");
 550                         }
 551                         break;
 552
 553                 case 'c':
 554                         if(mod & MOD_CTRL) {
 555                                 noclip = !noclip;
 556                                 show_message(noclip ? "no clip" : "clip");
 557                         }
 558                         break;
 559
 560                 case 'f':
 561                         toggle_flight();
 562                         break;
 563
 564                 case 'p':
 565                         if(mod & MOD_CTRL) {
 566                                 fb_srgb = !fb_srgb;
 567                                 show_message("gamma correction for non-sRGB framebuffers: %s\n", fb_srgb ? "off" : "on");
 568                         }
 569                         break;
 570
 571                 case '=':
 572                         walk_speed *= 1.25;
 573                         show_message("walk speed: %g", walk_speed);
 574                         break;
 575
 576                 case '-':
 577                         walk_speed *= 0.75;
 578                         show_message("walk speed: %g", walk_speed);
 579                         break;
 580
 581                 case ']':
 582                         mouse_speed *= 1.2;
 583                         show_message("mouse speed: %g", mouse_speed);
 584                         break;
 585
 586                 case '[':
 587                         mouse_speed *= 0.8;
 588                         show_message("mouse speed: %g", mouse_speed);
 589                         break;
 590
 591                 case 'b':
 592                         show_blobs = !show_blobs;
 593                         show_message("blobs: %s\n", show_blobs ? "on" : "off");
 594                         break;
 595
 596                 case ' ':
 597                         goatvr_recenter();
 598                         show_message("VR recenter\n");
 599                         break;
 600
 601                 case 'x':
 602                         exman->load(mscn, "data/exhibits");
 603                         break;
 604                 }
 605         }
 606
 607         if(key < 256 && !(mod & (MOD_CTRL | MOD_ALT))) {
 608                 keystate[key] = pressed;
 609         }
 610 }
 611
 612 void app_mouse_button(int bn, bool pressed, int x, int y)
 613 {
 614         if(debug_gui) {
 615                 debug_gui_mbutton(bn, pressed, x, y);
 616                 return; // ignore mouse events while GUI is visible
 617         }
 618
 619         prev_mx = x;
 620         prev_my = y;
 621         bnstate[bn] = pressed;
 622
 623         if(bn == 0) {
 624                 if(!pressed) {
 625                         if(ex_sel.ex) {
 626                                 ex_sel.ex = 0;
 627                         } else {
 628                                 Ray ray = calc_pick_ray(x, y, view_matrix, proj_matrix);
 629                                 ex_sel = exman->select(ray);
 630                         }
 631                 }
 632         }
 633 }
 634
 635 static inline void mouse_look(float dx, float dy)
 636 {
 637         float scrsz = (float)win_height;
 638         avatar.body_rot += dx * 512.0 / scrsz;
 639         avatar.head_alt += dy * 512.0 / scrsz;
 640
 641         if(avatar.head_alt < -90) avatar.head_alt = -90;
 642         if(avatar.head_alt > 90) avatar.head_alt = 90;
 643 }
 644
 645 static void mouse_zoom(float dx, float dy)
 646 {
 647         cam_dist += dy * 0.1;
 648         if(cam_dist < 0.0) cam_dist = 0.0;
 649 }
 650
 651 void app_mouse_motion(int x, int y)
 652 {
 653         if(debug_gui) {
 654                 debug_gui_mmotion(x, y);
 655                 return; // ignore mouse events while GUI is visible
 656         }
 657
 658         int dx = x - prev_mx;
 659         int dy = y - prev_my;
 660         prev_mx = x;
 661         prev_my = y;
 662
 663         if(!dx && !dy) return;
 664
 665         if(ex_sel.ex) {
 666                 Vec3 pos = ex_sel.ex->node->get_node_position();
 667                 Vec3 dir = transpose(view_matrix.upper3x3()) * Vec3(dx * 1.0, dy * -1.0, 0);
 668
 669                 ex_sel.ex->node->set_position(pos + dir);
 670         }
 671
 672         if(bnstate[2]) {
 673                 mouse_look(dx, dy);
 674         }
 675 }
 676
 677 void app_mouse_delta(int dx, int dy)
 678 {
 679         if(bnstate[2]) {
 680                 mouse_zoom(dx * mouse_speed, dy * mouse_speed);
 681         } else {
 682                 mouse_look(dx * mouse_speed, dy * mouse_speed);
 683         }
 684 }
 685
 686 void app_mouse_wheel(int dir)
 687 {
 688         if(debug_gui) {
 689                 debug_gui_wheel(dir);
 690         }
 691 }
 692
 693 void app_gamepad_axis(int axis, float val)
 694 {
 695         switch(axis) {
 696         case 0:
 697                 joy_move.x = val;
 698                 break;
 699         case 1:
 700                 joy_move.y = val;
 701                 break;
 702
 703         case 2:
 704                 joy_look.x = val;
 705                 break;
 706         case 3:
 707                 joy_look.y = val;
 708                 break;
 709         }
 710 }
 711
 712 void app_gamepad_button(int bn, bool pressed)
 713 {
 714         gpad_bnstate[bn] = pressed;
 715
 716         if(pressed) {
 717                 switch(bn) {
 718                 case GPAD_LSTICK:
 719                         toggle_flight();
 720                         break;
 721
 722                 case GPAD_X:
 723                         show_blobs = !show_blobs;
 724                         show_message("blobs: %s\n", show_blobs ? "on" : "off");
 725                         break;
 726
 727                 case GPAD_START:
 728                         goatvr_recenter();
 729                         show_message("VR recenter\n");
 730                         break;
 731
 732                 default:
 733                         break;
 734                 }
 735         }
 736 }
 737
 738 static void toggle_flight()
 739 {
 740         static float prev_walk_speed = -1.0;
 741         if(prev_walk_speed < 0.0) {
 742                 noclip = true;
 743                 prev_walk_speed = walk_speed;
 744                 walk_speed = 1000.0;
 745                 show_message("fly mode\n");
 746         } else {
 747                 noclip = false;
 748                 walk_speed = prev_walk_speed;
 749                 prev_walk_speed = -1.0;
 750                 show_message("walk mode\n");
 751         }
 752 }
 753
 754 static void calc_framerate()
 755 {
 756         static int ncalc;
 757         static int nframes;
 758         static long prev_upd;
 759
 760         long elapsed = time_msec - prev_upd;
 761         if(elapsed >= 1000) {
 762                 framerate = (float)nframes / (float)(elapsed * 0.001);
 763                 nframes = 1;
 764                 prev_upd = time_msec;
 765
 766                 /*if(++ncalc >= 5) {
 767                         printf("fps: %f\n", framerate);
 768                         ncalc = 0;
 769                 }*/
 770         } else {
 771                 ++nframes;
 772         }
 773 }
 774
 775 static Ray calc_pick_ray(int x, int y, const Mat4 &view_mat, const Mat4 &proj_mat)
 776 {
 777         return Ray();   // TODO
 778 }