dungeon_crawler: 21999ef6636b prototype/src/main.cc

dungeon_crawler

view prototype/src/main.cc @ 26:21999ef6636b

lalala

author	John Tsiombikas <nuclear@member.fsf.org>
date	Sat, 25 Aug 2012 04:07:51 +0300
parents	527fede30057
children	2fc004802739

line source

1 #include <stdio.h>

2 #include <stdlib.h>

3 #include <assert.h>

4 #include <unistd.h>

5 #include "opengl.h"

6 #include "level.h"

7 #include "camera.h"

8 #include "datapath.h"

9 #include "tileset.h"

10 #include "renderer.h"

11 #include "cmdcon.h"

12 #include "cfg.h"

14 bool init(int xsz, int ysz);

15 void cleanup();

16 void idle();

17 void disp();

18 void draw();

19 void view_matrix(int eye);

20 void proj_matrix(int eye);

21 void update(unsigned long msec);

22 void reshape(int x, int y);

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

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

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

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

27 void motion(int x, int y);

29 static TileSet *tileset;

30 static Level *level;

32 static FpsCamera cam;

33 static bool keystate[256];

35 static float stereo_focus_dist = 0.25;

36 static float stereo_eye_sep = stereo_focus_dist / 30.0;

38 static bool show_con;

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

41 {

42 glutInit(&argc, argv);

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

45 return 1;

46 }

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

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

50 glutCreateWindow("dungeon crawler prototype");

52 glutIdleFunc(idle);

53 glutDisplayFunc(disp);

54 glutReshapeFunc(reshape);

55 glutKeyboardFunc(keyb);

56 glutKeyboardUpFunc(key_release);

57 glutMouseFunc(mouse);

58 glutMotionFunc(motion);

60 glewInit();

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

63 return 1;

64 }

66 glutMainLoop();

67 }

69 bool init(int xsz, int ysz)

70 {

71 glEnable(GL_LIGHTING);

72 glEnable(GL_LIGHT0);

73 float ldir[] = {-1, 1, 2, 0};

74 glLightfv(GL_LIGHT0, GL_POSITION, ldir);

75 glEnable(GL_NORMALIZE);

77 glEnable(GL_DEPTH_TEST);

78 glEnable(GL_CULL_FACE);

79 glEnable(GL_MULTISAMPLE);

81 add_data_path(".");

82 add_data_path("data");

83 add_data_path("sdr");

85 if(!init_renderer(xsz, ysz)) {

86 return false;

87 }

89 if(!init_cmdcon()) {

90 return false;

91 }

93 // load a tileset

94 tileset = new TileSet;

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

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

97 return false;

98 }

99 set_active_tileset(tileset);

100

101 level = new Level;

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

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

104 return false;

105 }

106

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

108

109 return true;

110 }

111

112 void cleanup()

113 {

114 delete level;

115 delete tileset;

116

117 destroy_renderer();

118

119 cleanup_cmdcon();

120 }

121

122 void idle()

123 {

124 glutPostRedisplay();

125 }

126

127 void disp()

128 {

129 update(glutGet(GLUT_ELAPSED_TIME));

130

131 if(cfg.stereo) {

132 glDrawBuffer(GL_BACK_LEFT);

133

134 glMatrixMode(GL_PROJECTION);

135 glLoadIdentity();

136 proj_matrix(-1);

137 glMatrixMode(GL_MODELVIEW);

138 glLoadIdentity();

139 view_matrix(-1);

140

141 draw();

142

143 glDrawBuffer(GL_BACK_RIGHT);

144

145 glMatrixMode(GL_PROJECTION);

146 glLoadIdentity();

147 proj_matrix(1);

148 glMatrixMode(GL_MODELVIEW);

149 glLoadIdentity();

150 view_matrix(1);

151

152 draw();

153 } else {

154 glMatrixMode(GL_PROJECTION);

155 glLoadIdentity();

156 proj_matrix(0);

157 glMatrixMode(GL_MODELVIEW);

158 glLoadIdentity();

159 view_matrix(0);

160

161 draw();

162 }

163

164 glutSwapBuffers();

165 assert(glGetError() == GL_NO_ERROR);

166

167 usleep(10000);

168 }

169

170 void draw()

171 {

172 //render_deferred(level);

173

174 if(show_con) {

175 draw_cmdcon();

176 }

177 }

178

179 void view_matrix(int eye)

180 {

181 float offs = stereo_eye_sep * eye * 0.5;

182 glTranslatef(-offs, 0, 0);

183 cam.use_inverse();

184 }

185

186 void proj_matrix(int eye)

187 {

188 static const float fov = M_PI / 4.0;

189 static const float near_clip = 0.1;

190 static const float far_clip = 100.0;

191

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

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

194

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

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

197 }

198

199

200 void update(unsigned long msec)

201 {

202 static unsigned long last_upd;

203

204 if(last_upd == 0) {

205 last_upd = msec;

206 }

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

208

209 float offs = 2.5 * dt;

210 float dx = 0, dy = 0;

211

212 // handle key input

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

214 dy -= offs;

215 }

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

217 dy += offs;

218 }

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

220 dx += offs;

221 }

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

223 dx -= offs;

224 }

225

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

227

228 last_upd = msec;

229 }

230

231 void reshape(int x, int y)

232 {

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

234 cfg.width = x;

235 cfg.height = y;

236 }

237

238 static bool stereo_shift_pressed;

239

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

241 {

242 switch(key) {

243 case 27:

244 exit(0);

245

246 case '`':

247 show_con = true;

248 glutKeyboardFunc(keyb_con);

249 glutKeyboardUpFunc(0);

250 glutPostRedisplay();

251 break;

252

253 case 'z':

254 stereo_shift_pressed = true;

255 break;

256

257 case '\n':

258 case '\r':

259 {

260 static bool fullscr;

261 if(glutGetModifiers() & GLUT_ACTIVE_ALT) {

262 fullscr = !fullscr;

263 if(fullscr) {

264 glutFullScreen();

265 } else {

266 glutPositionWindow(20, 20);

267 }

268 }

269 }

270 break;

271

272 default:

273 break;

274 }

275

276 keystate[key] = true;

277 }

278

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

280 {

281 switch(key) {

282 case 'z':

283 stereo_shift_pressed = false;

284 break;

285

286 default:

287 break;

288 }

289

290 keystate[key] = false;

291 }

292

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

294 {

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

296 show_con = false;

297 glutKeyboardFunc(keyb);

298 glutKeyboardUpFunc(key_release);

299 glutPostRedisplay();

300 } else {

301 cmdcon_keypress(key);

302 }

303 }

304

305 static int prev_x, prev_y;

306 static bool bnstate[32];

307

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

309 {

310 prev_x = x;

311 prev_y = y;

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

313 }

314

315 void motion(int x, int y)

316 {

317 int dx = x - prev_x;

318 int dy = y - prev_y;

319 prev_x = x;

320 prev_y = y;

321

322 if(stereo_shift_pressed) {

323 if(dy != 0) {

324 stereo_focus_dist += dy * 0.01;

325 stereo_eye_sep = stereo_focus_dist / 30.0;

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

327 glutPostRedisplay();

328 }

329 return;

330 }

331

332 if(bnstate[0]) {

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

334 glutPostRedisplay();

335 }

336 if(bnstate[2]) {

337 cam.input_zoom(dy * 0.1);

338 glutPostRedisplay();

339 }

340 }