dungeon_crawler: d57df51f6b50 prototype/src/level.cc

dungeon_crawler

view prototype/src/level.cc @ 51:d57df51f6b50

- fixed audio panning (listener direction) - particles had no fog - sound sources were not destroyed properly

author	John Tsiombikas <nuclear@member.fsf.org>
date	Tue, 18 Sep 2012 09:40:56 +0300
parents	c40efa9cf844
children	0d4061b1e6a1

line source

1 #include <stdio.h>

2 #include <string.h>

3 #include <errno.h>

4 #include "opengl.h"

5 #include "level.h"

6 #include "tile.h"

7 #include "tileset.h"

8 #include "cfg.h"

10 Level::Level()

11 {

12 cell_size = 1.0;

14 cells = 0;

15 xsz = ysz = 0;

16 }

18 Level::~Level()

19 {

20 delete [] cells;

22 for(auto cell : cell_list) {

23 delete cell;

24 }

25 }

27 bool Level::load(const char *fname)

28 {

29 if(!fname) {

30 return false;

31 }

33 TileSet *tileset = get_active_tileset();

34 if(!tileset) {

35 fprintf(stderr, "level loading failed: no active tileset\n");

36 return false;

37 }

38 Tile *deftile = tileset->get_tile("default");

39 if(!deftile) {

40 fprintf(stderr, "level loading failed: active tileset has no default tile\n");

41 return false;

42 }

44 FILE *fp = fopen(fname, "r");

45 if(!fp) {

46 fprintf(stderr, "failed to open level: %s: %s\n", fname, strerror(errno));

47 return false;

48 }

50 char buf[512];

51 fgets(buf, sizeof buf, fp);

52 if(sscanf(buf, "SIZE %dx%d", &xsz, &ysz) != 2) {

53 fprintf(stderr, "invalid or corrupt level file: %s\n", fname);

54 fclose(fp);

55 return false;

56 }

57 printf("level size: %dx%d\n", xsz, ysz);

59 cells = new GridCell*[xsz * ysz];

60 memset(cells, 0, xsz * ysz * sizeof *cells);

62 int y = 0;

63 GridCell **grid_row = cells;

65 while(fgets(buf, sizeof buf, fp)) {

66 for(int i=0; i<xsz; i++) {

67 if(!buf[i] || buf[i] == '\r' || buf[i] == '\n') {

68 grid_row += xsz - i;

69 break;

70 }

72 if(isalpha(buf[i]) || buf[i] == ' ') {

73 GridCell *cell = new GridCell(deftile);

74 *grid_row = cell;

75 cell_list.push_back(*grid_row);

76 }

77 grid_row++;

78 }

80 if(++y >= ysz) {

81 break;

82 }

83 }

84 fclose(fp);

86 for(int i=0; i<ysz; i++) {

87 for(int j=0; j<xsz; j++) {

88 GridCell *cell = get_cell(j, i);

89 if(!cell) {

90 continue;

91 }

93 // find the adjacency mask of this cell and store it

94 unsigned int adjmask = get_cell_dirmask(j, i);

95 cell->set_adj_mask(adjmask);

97 // add any audio sources in this grid-cell to the level static audio manager

98 std::list<Tile::AudioSourceDesc> asrc = cell->get_audio_sources();

99 for(auto sdesc : asrc) {

100 if(sdesc.dirmask & adjmask) {

101 Vector3 pos = sdesc.pos + get_cell_pos(j, i);

102

103 AudioSource *s = new AudioSource;

104 s->set_sample(sdesc.sample);

105 s->set_position(pos);

106 s->set_volume(sdesc.volume);

107 s->set_reference_dist(sdesc.ref_dist);

108 //s->set_rolloff(1.0);

109 austatic.add_source(s);

110 }

111 }

112 }

113 }

114

115 return true;

116 }

117

118 bool Level::save(const char *fname) const

119 {

120 return false;

121 }

122

123 GridCell *Level::get_cell(int x, int y)

124 {

125 if(x < 0 || x >= xsz || y < 0 || y >= ysz) {

126 return 0;

127 }

128 return cells[y * xsz + x];

129 }

130

131 const GridCell *Level::get_cell(int x, int y) const

132 {

133 if(x < 0 || x >= xsz || y < 0 || y >= ysz) {

134 return 0;

135 }

136 return cells[y * xsz + x];

137 }

138

139 Vector3 Level::get_cell_pos(int x, int y) const

140 {

141 float posx = (float)x * cell_size;

142 float posy = (float)y * cell_size;

143 posx -= cell_size * (float)xsz / 2.0f;

144 posy -= cell_size * (float)ysz / 2.0f;

145 return Vector3(posx, 0, posy);

146 }

147

148 void Level::get_cell_coords_at(const Vector3 &pos, int *xptr, int *yptr) const

149 {

150 float posx = pos.x + cell_size * (float)xsz / 2.0f;

151 float posy = pos.z + cell_size * (float)ysz / 2.0f;

152 *xptr = (int)round(posx / cell_size);

153 *yptr = (int)round(posy / cell_size);

154 }

155

156 unsigned int Level::get_cell_dirmask(int x, int y) const

157 {

158 unsigned int dmask = TILE_ALL;

159 if(y > 0 && get_cell(x, y - 1)) {

160 dmask &= ~TILE_NORTH;

161 }

162 if(y < ysz - 1 && get_cell(x, y + 1)) {

163 dmask &= ~TILE_SOUTH;

164 }

165 if(x > 0 && get_cell(x - 1, y)) {

166 dmask &= ~TILE_WEST;

167 }

168 if(x < xsz - 1 && get_cell(x + 1, y)) {

169 dmask &= ~TILE_EAST;

170 }

171 return dmask;

172 }

173

174 void Level::set_player_position(const Vector3 &ppos)

175 {

176 player_pos = ppos;

177 }

178

179 void Level::update(unsigned long msec, float dt)

180 {

181 for(auto cell : cell_list) {

182 cell->update(msec, dt);

183 }

184

185 // activate the closest audio sources

186 if(cfg.sound) {

187 austatic.active_range(player_pos, 2.0);

188 }

189 }

190

191 void Level::draw() const

192 {

193 glMatrixMode(GL_MODELVIEW);

194

195 for(int i=0; i<ysz; i++) {

196 for(int j=0; j<xsz; j++) {

197 const GridCell *cell = get_cell(j, i);

198 if(cell) {

199 Vector3 pos = get_cell_pos(j, i);

200 glPushMatrix();

201 glTranslatef(pos.x, pos.y, pos.z);

202 glScalef(cell_size, cell_size, cell_size);

203

204 unsigned int dmask = get_cell_dirmask(j, i);

205

206 cell->draw(dmask);

207 glPopMatrix();

208 }

209 }

210 }

211 }

212

213 void Level::draw_lights() const

214 {

215 glMatrixMode(GL_MODELVIEW);

216

217 for(int i=0; i<ysz; i++) {

218 for(int j=0; j<xsz; j++) {

219 const GridCell *cell = get_cell(j, i);

220 if(cell) {

221 Vector3 pos = get_cell_pos(j, i);

222

223 glPushMatrix();

224 glTranslatef(pos.x, pos.y, pos.z);

225 glScalef(cell_size, cell_size, cell_size);

226

227 unsigned int dmask = get_cell_dirmask(j, i);

228 cell->draw_lights(dmask);

229

230 glPopMatrix();

231 }

232 }

233 }

234 }

235

236 void Level::draw_post() const

237 {

238 glMatrixMode(GL_MODELVIEW);

239

240 for(int i=0; i<ysz; i++) {

241 for(int j=0; j<xsz; j++) {

242 const GridCell *cell = get_cell(j, i);

243 if(cell) {

244 Vector3 pos = get_cell_pos(j, i);

245 glPushMatrix();

246 glTranslatef(pos.x, pos.y, pos.z);

247 glScalef(cell_size, cell_size, cell_size);

248

249 unsigned int dmask = get_cell_dirmask(j, i);

250

251 cell->draw_post(dmask);

252 glPopMatrix();

253 }

254 }

255 }

256 }

257

258 void Level::draw_grid() const

259 {

260 float xlen = xsz * cell_size;

261 float ylen = ysz * cell_size;

262

263 glPushAttrib(GL_ENABLE_BIT);

264 glDisable(GL_LIGHTING);

265

266 glBegin(GL_LINES);

267 glColor3f(0.4, 0.4, 0.4);

268

269 float y = -ylen / 2.0 - cell_size / 2.0;

270 for(int i=0; i<ysz; i++) {

271 glVertex3f(-xlen / 2.0, 0, y);

272 glVertex3f(xlen / 2.0, 0, y);

273 y += cell_size;

274 }

275

276 float x = -xlen / 2.0 - cell_size / 2.0;

277 for(int i=0; i<xsz; i++) {

278 glVertex3f(x, 0, -ylen / 2.0);

279 glVertex3f(x, 0, ylen / 2.0);

280 x += cell_size;

281 }

282 glEnd();

283

284 glPopAttrib();

285 }

286

287

288 AudioSample *Level::get_sample(int x, int y, int which) const

289 {

290 const GridCell *cell = get_cell(x, y);

291 if(!cell) {

292 return 0;

293 }

294 return cell->get_sample(which);

295 }

296

297

298 GridCell::GridCell(Tile *tile)

299 {

300 if(tile) {

301 add_tile(tile);

302 }

303

304 adjmask = TILE_ALL;

305 }

306

307 void GridCell::set_adj_mask(unsigned int mask)

308 {

309 adjmask = mask;

310 }

311

312 unsigned int GridCell::get_adj_mask() const

313 {

314 return adjmask;

315 }

316

317 void GridCell::add_tile(Tile *tile)

318 {

319 if(!tile) {

320 return;

321 }

322

323 tiles.push_back(tile);

324

325 /* instanciate any particle systems */

326 int num_psattr = tile->get_unique_psys_count();

327

328 for(int i=0; i<num_psattr; i++) {

329 const struct psys_attributes *psattr = tile->get_unique_psys(i);

330 struct psys_emitter *emitter = psys_create();

331 emitter->attr = *psattr;

332 psys.push_back(emitter);

333 }

334 }

335

336 void GridCell::update(unsigned long msec, float dt)

337 {

338 for(auto ps : psys) {

339 psys_update(ps, (float)msec / 1000.0f);

340 }

341 }

342

343 void GridCell::draw(unsigned int draw_mask) const

344 {

345 for(auto tile : tiles) {

346 tile->draw(draw_mask);

347 }

348 }

349

350 void GridCell::draw_lights(unsigned int draw_mask) const

351 {

352 for(auto tile : tiles) {

353 tile->draw_lights(draw_mask);

354 }

355 }

356

357 void GridCell::draw_post(unsigned int draw_mask) const

358 {

359 for(auto tile : tiles) {

360 tile->draw_post(draw_mask);

361 }

362 for(auto ps : psys) {

363 psys_draw(ps);

364 }

365 }

366

367 AudioSample *GridCell::get_sample(int which) const

368 {

369 for(auto tile : tiles) {

370 AudioSample *s = tile->get_sample(which);

371 if(s) {

372 return s;

373 }

374 }

375 return 0;

376 }

377

378 std::list<Tile::AudioSourceDesc> GridCell::get_audio_sources() const

379 {

380 std::list<Tile::AudioSourceDesc> srclist;

381

382 for(auto tile : tiles) {

383 int num_src = tile->get_audio_source_count();

384 for(int i=0; i<num_src; i++) {

385 srclist.push_back(tile->get_audio_source(i));

386 }

387 }

388 return srclist;

389 }