dungeon_crawler: bcdea26c8f27 prototype/src/main.cc

dungeon_crawler

view prototype/src/main.cc @ 52:bcdea26c8f27

foo

author	John Tsiombikas <nuclear@member.fsf.org>
date	Tue, 18 Sep 2012 18:34:28 +0300
parents	d57df51f6b50
children	4c427e28ca00

line source

1 #include <stdio.h>

2 #include <stdlib.h>

3 #include <assert.h>

4 #include <unistd.h>

5 #include "opengl.h"

6 #include "psys/psys.h"

7 #include "level.h"

8 #include "texture.h"

9 #include "camera.h"

10 #include "datapath.h"

11 #include "tileset.h"

12 #include "renderer.h"

13 #include "renderer_deferred.h"

14 #include "cmdcon.h"

15 #include "cfg.h"

16 #include "timer.h"

17 #include "audio/audio.h"

18 #include "audio/source.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;

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

50 {

51 glutInit(&argc, argv);

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

54 return 1;

55 }

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

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

59 glutCreateWindow("dungeon crawler prototype");

61 glutIdleFunc(idle);

62 glutDisplayFunc(disp);

63 glutReshapeFunc(reshape);

64 glutKeyboardFunc(keyb);

65 glutKeyboardUpFunc(key_release);

66 glutMouseFunc(mouse);

67 glutMotionFunc(motion);

69 glewInit();

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

72 return 1;

73 }

74 atexit(cleanup);

76 glutMainLoop();

77 }

79 bool init(int xsz, int ysz)

80 {

81 // backup light for the forward crappy renderer

82 glEnable(GL_LIGHTING);

83 glEnable(GL_LIGHT0);

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

86 glLightfv(GL_LIGHT0, GL_POSITION, ldir);

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

88 glLightfv(GL_LIGHT0, GL_DIFFUSE, lcol);

89 glLightfv(GL_LIGHT0, GL_SPECULAR, lcol);

91 glEnable(GL_DEPTH_TEST);

92 glEnable(GL_CULL_FACE);

93 glEnable(GL_MULTISAMPLE);

95 add_data_path(".");

96 add_data_path("data");

97 add_data_path("data/audio");

98 add_data_path("sdr");

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

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

102 cfg.sound = false;

103 }

104 if(cfg.sound) {

105 move_sound = new AudioSource;

106 move_sound->set_volume(0.4);

107 }

108

109 rend = new DeferredRenderer();

110 if(!cfg.use_deferred || !rend->init(xsz, ysz)) {

111 printf("falling back to crappy renderer...\n");

112

113 rend = new FwdRenderer();

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

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

116 return false;

117 }

118 }

119

120 if(!init_cmdcon()) {

121 return false;

122 }

123

124 psys_texture_loader(load_psys_tex, 0, 0);

125

126 // load a tileset

127 tileset = new TileSet;

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

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

130 return false;

131 }

132 set_active_tileset(tileset);

133

134 level = new Level;

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

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

137 return false;

138 }

139

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

141

142 return true;

143 }

144

145 void cleanup()

146 {

147 delete level;

148 delete tileset;

149 delete rend;

150

151 cleanup_cmdcon();

152

153 if(cfg.sound) {

154 delete move_sound;

155 destroy_audio();

156 }

157 }

158

159 void idle()

160 {

161 glutPostRedisplay();

162 }

163

164 void disp()

165 {

166 update(get_time_msec());

167

168 if(cfg.stereo) {

169 glDrawBuffer(GL_BACK_LEFT);

170

171 glMatrixMode(GL_PROJECTION);

172 glLoadIdentity();

173 proj_matrix(-1);

174 glMatrixMode(GL_MODELVIEW);

175 glLoadIdentity();

176 view_matrix(-1);

177

178 draw();

179

180 glDrawBuffer(GL_BACK_RIGHT);

181

182 glMatrixMode(GL_PROJECTION);

183 glLoadIdentity();

184 proj_matrix(1);

185 glMatrixMode(GL_MODELVIEW);

186 glLoadIdentity();

187 view_matrix(1);

188

189 draw();

190 } else {

191 glMatrixMode(GL_PROJECTION);

192 glLoadIdentity();

193 proj_matrix(0);

194 glMatrixMode(GL_MODELVIEW);

195 glLoadIdentity();

196 view_matrix(0);

197

198 draw();

199 }

200

201 glutSwapBuffers();

202 assert(glGetError() == GL_NO_ERROR);

203 }

204

205 void draw()

206 {

207 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

208

209 rend->render(level);

210

211 if(show_con) {

212 draw_cmdcon();

213 }

214 }

215

216 void view_matrix(int eye)

217 {

218 float offs = stereo_eye_sep * eye * 0.5;

219 glTranslatef(-offs, 0, 0);

220 cam.use_inverse();

221 }

222

223 void proj_matrix(int eye)

224 {

225 static const float fov = M_PI / 4.0;

226 static const float near_clip = 0.1;

227 static const float far_clip = 100.0;

228

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

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

231

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

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

234 }

235

236

237 void update(unsigned long msec)

238 {

239 static unsigned long last_upd;

240

241 if(last_upd == 0) {

242 last_upd = msec;

243 }

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

245

246 float offs = 2.5 * dt;

247 float dx = 0, dy = 0;

248

249 // handle key input

250 bool did_move = false;

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

252 dy -= offs;

253 did_move = true;

254 }

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

256 dy += offs;

257 did_move = true;

258 }

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

260 dx += offs;

261 did_move = true;

262 }

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

264 dx -= offs;

265 did_move = true;

266 }

267

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

269

270 tileset->update_tiles(msec);

271

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

273 level->update(msec, dt);

274

275 if(cfg.sound) {

276 // set the listener matrix

277 set_audio_listener(cam.matrix());

278

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

280 int cellx, celly;

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

282

283 const AudioSample *move_sample;

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

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

286 move_sound->stop();

287 move_sound->set_sample(move_sample);

288 move_sound->play();

289 }

290 } else {

291 if(move_sound->get_sample()) {

292 move_sound->stop();

293 move_sound->set_sample(0);

294 }

295 }

296 }

297

298 last_upd = msec;

299 }

300

301 void reshape(int x, int y)

302 {

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

304 cfg.width = x;

305 cfg.height = y;

306

307 rend->resize(x, y);

308 }

309

310 static bool stereo_shift_pressed;

311

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

313 {

314 switch(key) {

315 case 27:

316 exit(0);

317

318 case '`':

319 show_con = true;

320 glutKeyboardFunc(keyb_con);

321 glutKeyboardUpFunc(0);

322 glutPostRedisplay();

323 break;

324

325 case 'z':

326 stereo_shift_pressed = true;

327 break;

328

329 case 'p':

330 {

331 Vector3 pos = cam.get_position();

332 int cell_x, cell_y;

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

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

335 cell_x, cell_y);

336 }

337 break;

338

339 case 'P':

340 {

341 Vector3 pos = cam.get_position();

342 int cell_x, cell_y;

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

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

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

346 }

347 break;

348

349

350 case '\n':

351 case '\r':

352 {

353 static bool fullscr;

354 if(glutGetModifiers() & GLUT_ACTIVE_ALT) {

355 fullscr = !fullscr;

356 if(fullscr) {

357 glutFullScreen();

358 } else {

359 glutPositionWindow(20, 20);

360 }

361 }

362 }

363 break;

364

365 default:

366 break;

367 }

368

369 keystate[key] = true;

370 }

371

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

373 {

374 switch(key) {

375 case 'z':

376 stereo_shift_pressed = false;

377 break;

378

379 default:

380 break;

381 }

382

383 keystate[key] = false;

384 }

385

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

387 {

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

389 show_con = false;

390 glutKeyboardFunc(keyb);

391 glutKeyboardUpFunc(key_release);

392 glutPostRedisplay();

393 } else {

394 cmdcon_keypress(key);

395 }

396 }

397

398 static int prev_x, prev_y;

399 static bool bnstate[32];

400

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

402 {

403 prev_x = x;

404 prev_y = y;

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

406 }

407

408 void motion(int x, int y)

409 {

410 int dx = x - prev_x;

411 int dy = y - prev_y;

412 prev_x = x;

413 prev_y = y;

414

415 if(stereo_shift_pressed) {

416 if(dy != 0) {

417 stereo_focus_dist += dy * 0.01;

418 stereo_eye_sep = stereo_focus_dist / 30.0;

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

420 glutPostRedisplay();

421 }

422 return;

423 }

424

425 if(bnstate[0]) {

426 cam.input_rotate(dy * 0.01, dx * 0.01, 0);

427 glutPostRedisplay();

428 }

429 if(bnstate[2]) {

430 cam.input_zoom(dy * 0.1);

431 glutPostRedisplay();

432 }

433 }

434

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

436 {

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

438 return texset->get(fname);

439 }