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