dungeon_crawler: a27528035e20 prototype/src/main.cc

dungeon_crawler

view prototype/src/main.cc @ 72:a27528035e20

- re-organized the renderer classes a bit wrt final render-target - implemented identity color-grading palette for now - broke particle systems.... - removed multipass renderer

author	John Tsiombikas <nuclear@member.fsf.org>
date	Fri, 19 Oct 2012 02:45:57 +0300
parents	45172d087ebe
children	5981917093ff

line source

1 #include <stdio.h>

2 #include <stdlib.h>

3 #include <assert.h>

4 #include "opengl.h"

5 #include "psys/psys.h"

6 #include "level.h"

7 #include "texture.h"

8 #include "camera.h"

9 #include "datapath.h"

10 #include "tileset.h"

11 #include "renderer.h"

12 #include "renderer_deferred.h"

13 #include "cmdcon.h"

14 #include "cfg.h"

15 #include "timer.h"

16 #include "audio/audio.h"

17 #include "audio/source.h"

18 #include "audio/ovstream.h"

20 bool init(int xsz, int ysz);

21 void cleanup();

22 void idle();

23 void disp();

24 void draw();

25 void view_matrix(int eye);

26 void proj_matrix(int eye);

27 void update(unsigned long msec);

28 void reshape(int x, int y);

29 void keyb(unsigned char key, int x, int y);

30 void key_release(unsigned char key, int x, int y);

31 void keyb_con(unsigned char key, int x, int y);

32 void mouse(int bn, int state, int x, int y);

33 void motion(int x, int y);

34 unsigned int load_psys_tex(const char *fname, void *cls);

36 static TileSet *tileset;

37 static Level *level;

39 static FpsCamera cam;

40 static bool keystate[256];

42 static float stereo_focus_dist = 0.25;

43 static float stereo_eye_sep = stereo_focus_dist / 30.0;

45 static bool show_con;

47 static AudioSource *move_sound;

48 static OggVorbisStream *music;

50 int main(int argc, char **argv)

51 {

52 glutInit(&argc, argv);

54 if(!cfg.parse_args(argc, argv)) {

55 return 1;

56 }

58 glutInitWindowSize(cfg.width, cfg.height);

59 glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE | (cfg.stereo ? GLUT_STEREO : 0));

60 glutCreateWindow("dungeon crawler prototype");

62 glutIdleFunc(idle);

63 glutDisplayFunc(disp);

64 glutReshapeFunc(reshape);

65 glutKeyboardFunc(keyb);

66 glutKeyboardUpFunc(key_release);

67 glutMouseFunc(mouse);

68 glutMotionFunc(motion);

70 glewInit();

72 if(!init(cfg.width, cfg.height)) {

73 return 1;

74 }

75 atexit(cleanup);

77 glutMainLoop();

78 }

80 bool init(int xsz, int ysz)

81 {

82 // backup light for the forward crappy renderer

83 glEnable(GL_LIGHTING);

84 glEnable(GL_LIGHT0);

86 float ldir[] = {0, 0, -0.5, 1};

87 glLightfv(GL_LIGHT0, GL_POSITION, ldir);

88 float lcol[] = {1, 1, 1, 1};

89 glLightfv(GL_LIGHT0, GL_DIFFUSE, lcol);

90 glLightfv(GL_LIGHT0, GL_SPECULAR, lcol);

92 glEnable(GL_DEPTH_TEST);

93 glEnable(GL_CULL_FACE);

94 glEnable(GL_MULTISAMPLE);

96 add_data_path(".");

97 add_data_path("data");

98 add_data_path("data/audio");

99 add_data_path("sdr");

100

101 if(cfg.sound && !init_audio()) {

102 fprintf(stderr, "failed to initialize audio, continuing silently\n");

103 cfg.sound = false;

104 }

105 if(cfg.sound) {

106 move_sound = new AudioSource;

107 move_sound->set_volume(0.4);

108

109 music = new OggVorbisStream;

110 if(music->open(datafile_path("bgtrack.ogg").c_str())) {

111 music->set_volume(0.6);

112 music->play(PlayMode::loop);

113 } else {

114 delete music;

115 music = 0;

116 }

117 }

118

119 switch(cfg.rend) {

120 case Config::Renderer::mrt:

121 rend = new DeferredRenderer;

122 if(!rend->init(xsz, ysz)) {

123 fprintf(stderr, "failed to initialize deferred mrt renderer\n");

124 delete rend;

125 return false;

126 }

127 break;

128

129 case Config::Renderer::fwd:

130 rend = new FwdRenderer;

131 if(!rend->init(xsz, ysz)) {

132 fprintf(stderr, "failed to initialize forward renderer\n");

133 delete rend;

134 return false;

135 }

136 break;

137

138 default:

139 // try each in turn falling back to progressively worse renderers

140 rend = new DeferredRenderer;

141 if(!rend->init(xsz, ysz)) {

142 printf("falling back to multipass renderer...\n");

143

144 delete rend;

145 rend = new FwdRenderer();

146 if(!rend->init(xsz, ysz)) {

147 fprintf(stderr, "failed to create renderer\n");

148 return false;

149 }

150 }

151 }

152

153 if(!init_cmdcon()) {

154 return false;

155 }

156

157 psys_texture_loader(load_psys_tex, 0, 0);

158

159 // load a tileset

160 tileset = new TileSet;

161 printf("loading tileset: %s\n", cfg.tileset_file);

162 if(!tileset->load(datafile_path(cfg.tileset_file).c_str())) {

163 return false;

164 }

165 set_active_tileset(tileset);

166

167 level = new Level;

168 printf("loading level: %s\n", cfg.level_file);

169 if(!level->load(datafile_path(cfg.level_file).c_str())) {

170 return false;

171 }

172

173 cam.input_move(0, 0.5, 0);

174

175 return true;

176 }

177

178 void cleanup()

179 {

180 delete level;

181 delete tileset;

182 delete rend;

183

184 cleanup_cmdcon();

185

186 if(cfg.sound) {

187 delete music;

188 delete move_sound;

189 destroy_audio();

190 }

191 }

192

193 void idle()

194 {

195 glutPostRedisplay();

196 }

197

198 void disp()

199 {

200 update(get_time_msec());

201

202 if(cfg.stereo) {

203 glDrawBuffer(GL_BACK_LEFT);

204

205 glMatrixMode(GL_PROJECTION);

206 glLoadIdentity();

207 proj_matrix(-1);

208 glMatrixMode(GL_MODELVIEW);

209 glLoadIdentity();

210 view_matrix(-1);

211

212 draw();

213

214 glDrawBuffer(GL_BACK_RIGHT);

215

216 glMatrixMode(GL_PROJECTION);

217 glLoadIdentity();

218 proj_matrix(1);

219 glMatrixMode(GL_MODELVIEW);

220 glLoadIdentity();

221 view_matrix(1);

222

223 draw();

224 } else {

225 glMatrixMode(GL_PROJECTION);

226 glLoadIdentity();

227 proj_matrix(0);

228 glMatrixMode(GL_MODELVIEW);

229 glLoadIdentity();

230 view_matrix(0);

231

232 draw();

233 }

234

235 glutSwapBuffers();

236 assert(glGetError() == GL_NO_ERROR);

237 }

238

239 void draw()

240 {

241 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

242

243 rend->render(level);

244

245 if(show_con) {

246 draw_cmdcon();

247 }

248 }

249

250 void view_matrix(int eye)

251 {

252 float offs = stereo_eye_sep * eye * 0.5;

253 glTranslatef(-offs, 0, 0);

254 cam.use_inverse();

255 }

256

257 void proj_matrix(int eye)

258 {

259 static const float fov = M_PI / 4.0;

260 static const float near_clip = 0.1;

261 static const float far_clip = 100.0;

262

263 float top = near_clip * tan(fov * 0.5);

264 float right = top * (float)cfg.width / (float)cfg.height;

265

266 float frust_shift = -(float)eye * (stereo_eye_sep * 0.5 * near_clip / stereo_focus_dist);

267 glFrustum(-right + frust_shift, right + frust_shift, -top, top, near_clip, far_clip);

268 }

269

270

271 void update(unsigned long msec)

272 {

273 static unsigned long last_upd;

274

275 if(last_upd == 0) {

276 last_upd = msec;

277 }

278 float dt = (float)(msec - last_upd) / 1000.0;

279

280 float offs = 2.0 * dt;

281 float dx = 0, dy = 0;

282

283 // handle key input

284 bool did_move = false;

285 if(keystate['w'] || keystate['W']) {

286 dy -= offs;

287 did_move = true;

288 }

289 if(keystate['s'] || keystate['S']) {

290 dy += offs;

291 did_move = true;

292 }

293 if(keystate['d'] || keystate['D']) {

294 dx += offs;

295 did_move = true;

296 }

297 if(keystate['a'] || keystate['A']) {

298 dx -= offs;

299 did_move = true;

300 }

301

302 cam.input_move(dx, 0, dy);

303

304 tileset->update_tiles(msec);

305

306 level->set_player_position(cam.get_position());

307 level->update(msec, dt);

308

309 if(cfg.sound) {

310 // set the listener matrix

311 set_audio_listener(cam.matrix());

312

313 // play the walking sound if we're walking

314 int cellx, celly;

315 level->get_cell_coords_at(cam.get_position(), &cellx, &celly);

316

317 const AudioSample *move_sample;

318 if(did_move && (move_sample = level->get_sample(cellx, celly, TILE_SAMPLE_WALK))) {

319 if(move_sample != move_sound->get_sample()) {

320 move_sound->stop();

321 move_sound->set_sample(move_sample);

322 move_sound->play();

323 }

324 } else {

325 if(move_sound->get_sample()) {

326 move_sound->stop();

327 move_sound->set_sample(0);

328 }

329 }

330 }

331

332 last_upd = msec;

333 }

334

335 void reshape(int x, int y)

336 {

337 glViewport(0, 0, x, y);

338 cfg.width = x;

339 cfg.height = y;

340

341 rend->resize(x, y);

342 }

343

344 static bool stereo_shift_pressed;

345

346 void keyb(unsigned char key, int x, int y)

347 {

348 switch(key) {

349 case 27:

350 exit(0);

351

352 case '`':

353 show_con = true;

354 glutKeyboardFunc(keyb_con);

355 glutKeyboardUpFunc(0);

356 glutPostRedisplay();

357 break;

358

359 case 'z':

360 stereo_shift_pressed = true;

361 break;

362

363 case 'p':

364 {

365 Vector3 pos = cam.get_position();

366 int cell_x, cell_y;

367 level->get_cell_coords_at(pos, &cell_x, &cell_y);

368 printf("Current position: [%.2f %.2f %.2f] cell: [%d %d]\n", pos.x, pos.y, pos.z,

369 cell_x, cell_y);

370 }

371 break;

372

373 case 'P':

374 {

375 Vector3 pos = cam.get_position();

376 int cell_x, cell_y;

377 level->get_cell_coords_at(pos, &cell_x, &cell_y);

378 AudioSample *sample = level->get_sample(cell_x, cell_y, TILE_SAMPLE_WALK);

379 printf("walk sample: %p\n", (void*)sample);

380 }

381 break;

382

383

384 case '\n':

385 case '\r':

386 {

387 static bool fullscr;

388 if(glutGetModifiers() & GLUT_ACTIVE_ALT) {

389 fullscr = !fullscr;

390 if(fullscr) {

391 glutFullScreen();

392 } else {

393 glutPositionWindow(20, 20);

394 }

395 }

396 }

397 break;

398

399 default:

400 break;

401 }

402

403 keystate[key] = true;

404 }

405

406 void key_release(unsigned char key, int x, int y)

407 {

408 switch(key) {

409 case 'z':

410 stereo_shift_pressed = false;

411 break;

412

413 default:

414 break;

415 }

416

417 keystate[key] = false;

418 }

419

420 void keyb_con(unsigned char key, int x, int y)

421 {

422 if(key == '`' || key == 27) {

423 show_con = false;

424 glutKeyboardFunc(keyb);

425 glutKeyboardUpFunc(key_release);

426 glutPostRedisplay();

427 } else {

428 cmdcon_keypress(key);

429 }

430 }

431

432 static int prev_x, prev_y;

433 static bool bnstate[32];

434

435 void mouse(int bn, int state, int x, int y)

436 {

437 prev_x = x;

438 prev_y = y;

439 bnstate[bn - GLUT_LEFT_BUTTON] = state == GLUT_DOWN;

440 }

441

442 void motion(int x, int y)

443 {

444 int dx = x - prev_x;

445 int dy = y - prev_y;

446 prev_x = x;

447 prev_y = y;

448

449 if(stereo_shift_pressed) {

450 if(dy != 0) {

451 stereo_focus_dist += dy * 0.01;

452 stereo_eye_sep = stereo_focus_dist / 30.0;

453 printf("foc: %f, sep: %f\n", stereo_focus_dist, stereo_eye_sep);

454 glutPostRedisplay();

455 }

456 return;

457 }

458

459 if(bnstate[0]) {

460 cam.input_rotate(dy * 0.0075, dx * 0.0075, 0);

461 glutPostRedisplay();

462 }

463 if(bnstate[2]) {

464 cam.input_zoom(dy * 0.1);

465 glutPostRedisplay();

466 }

467 }

468

469 unsigned int load_psys_tex(const char *fname, void *cls)

470 {

471 TextureSet *texset = tileset->get_textures();

472 return texset->get(fname);

473 }