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