tavli: a8e26f163f99 src/board.cc

tavli

view src/board.cc @ 11:a8e26f163f99

poulia

author	John Tsiombikas <nuclear@member.fsf.org>
date	Sat, 27 Jun 2015 08:01:51 +0300
parents	8a167149985d
children	ae1c60726c41

line source

1 #include <float.h>

2 #include "opengl.h"

3 #include "board.h"

4 #include "meshgen.h"

5 #include "pnoise.h"

7 Board::Board()

8 {

9 puck_obj = 0;

10 clear();

11 }

13 Board::~Board()

14 {

15 destroy();

16 }

18 bool Board::init()

19 {

20 if(!generate_textures()) {

21 return false;

22 }

23 if(!generate()) {

24 return false;

25 }

27 return true;

28 }

30 void Board::destroy()

31 {

32 for(size_t i=0; i<obj.size(); i++) {

33 delete obj[i];

34 }

35 obj.clear();

37 delete puck_obj;

38 puck_obj = 0;

39 }

41 void Board::clear()

42 {

43 memset(slots, 0, sizeof slots);

44 }

46 void Board::draw() const

47 {

48 for(size_t i=0; i<obj.size(); i++) {

49 obj[i]->draw();

50 }

51 }

53 #define HSIZE 1.0

54 #define VSIZE (2.0 * HSIZE)

55 #define BOT_THICKNESS (HSIZE * 0.01)

56 #define WALL_THICKNESS (HSIZE * 0.05)

57 #define WALL_HEIGHT (HSIZE * 0.1)

58 #define GAP (HSIZE * 0.025)

59 #define HINGE_RAD (GAP * 0.5)

60 #define HINGE_HEIGHT (VSIZE * 0.075)

61 #define PIECE_RAD (0.45 * HSIZE / 5.0)

63 static const float piece_cp[][3][2] = {

64 {{0, 0.25}, {1, 0.25}, {2, 0.5}},

65 {{2, 0.5}, {2.5, 0.5}, {3, 0.5}},

66 {{3, 0.5}, {4, 0.5}, {4, 0}},

67 {{4, 0}, {4, -0.5}, {3, -0.5}},

68 {{3, -0.5}, {2.5, -0.5}, {0, -0.5}},

69 //{{2, -0.5}, {1, -0.25}, {0, -0.25}}

70 };

71 static const int piece_ncurves = sizeof piece_cp / sizeof *piece_cp;

73 static Vector2 piece_revol(float u, float v, void *cls)

74 {

75 if(v >= 1.0) v = 1.0 - 1e-6;

76 int idx = std::min((int)(v * piece_ncurves), piece_ncurves - 1);

77 float t = fmod(v * (float)piece_ncurves, 1.0);

79 Vector2 res;

80 for(int i=0; i<2; i++) {

81 float mid = piece_cp[idx][1][i];

82 res[i] = bezier(piece_cp[idx][0][i], mid, mid, piece_cp[idx][2][i], t);

83 }

84 return res * 0.25 * PIECE_RAD;

85 }

87 bool Board::generate()

88 {

89 Mesh tmp;

90 Matrix4x4 xform;

92 obj.clear();

94 for(int i=0; i<2; i++) {

95 int sign = i * 2 - 1;

97 // generate bottom

98 Mesh *bottom = new Mesh;

99 gen_box(bottom, HSIZE, BOT_THICKNESS, HSIZE * 2.0);

100 xform.set_translation(Vector3(0, -BOT_THICKNESS / 2.0, 0));

101 bottom->apply_xform(xform);

102

103 Object *obottom = new Object;

104 obottom->set_mesh(bottom);

105 obottom->xform().set_translation(Vector3(sign * (HSIZE / 2.0 + WALL_THICKNESS + HINGE_RAD * 0.25), 0, 0));

106 obottom->set_texture(img_field.texture());

107 obj.push_back(obottom);

108

109

110 // generate the 4 sides

111 Mesh *sides = new Mesh;

112 gen_box(sides, WALL_THICKNESS, WALL_HEIGHT, VSIZE + WALL_THICKNESS * 2);

113 xform.set_translation(Vector3(-(HSIZE + WALL_THICKNESS) / 2.0,

114 WALL_HEIGHT / 2.0 - BOT_THICKNESS, 0));

115 sides->apply_xform(xform);

116

117 gen_box(&tmp, WALL_THICKNESS, WALL_HEIGHT, VSIZE + WALL_THICKNESS * 2);

118 xform.set_translation(Vector3((HSIZE + WALL_THICKNESS) / 2.0,

119 WALL_HEIGHT / 2.0 - BOT_THICKNESS, 0));

120 tmp.apply_xform(xform);

121 sides->append(tmp);

122 tmp.clear();

123

124 gen_box(&tmp, HSIZE, WALL_HEIGHT, WALL_THICKNESS);

125 xform.set_translation(Vector3(0, WALL_HEIGHT / 2.0 - BOT_THICKNESS,

126 (VSIZE + WALL_THICKNESS) / 2.0));

127 tmp.apply_xform(xform);

128 sides->append(tmp);

129 tmp.clear();

130

131 gen_box(&tmp, HSIZE, WALL_HEIGHT, WALL_THICKNESS);

132 xform.set_translation(Vector3(0, WALL_HEIGHT / 2.0 - BOT_THICKNESS,

133 -(VSIZE + WALL_THICKNESS) / 2.0));

134 tmp.apply_xform(xform);

135 sides->append(tmp);

136 tmp.clear();

137

138 // generate texture coordinates

139 sides->texcoord_gen_box();

140

141 Object *osides = new Object;

142 osides->set_mesh(sides);

143 osides->xform() = obottom->xform();

144 osides->set_texture(img_wood.texture());

145 osides->tex_xform().set_scaling(Vector3(2, 2, 2));

146 osides->tex_xform().rotate(-Vector3(1, 0, 0.5), M_PI / 4.0);

147 obj.push_back(osides);

148

149 }

150

151

152 // generate the hinges

153 Mesh *hinges = new Mesh;

154 for(int i=0; i<2; i++) {

155 float sign = i * 2 - 1;

156

157 // barrel

158 gen_cylinder(&tmp, HINGE_RAD, HINGE_HEIGHT, 8, 1, 1);

159 xform.reset_identity();

160 xform.translate(Vector3(0, WALL_HEIGHT - HINGE_RAD * 0.5, sign * VSIZE / 4.0));

161 xform.rotate(Vector3(-M_PI / 2.0, 0, 0));

162 tmp.apply_xform(xform);

163 hinges->append(tmp);

164

165 // flange

166 gen_plane(&tmp, HINGE_HEIGHT * 0.6, HINGE_HEIGHT * 0.8);

167 tmp.apply_xform(xform);

168

169 Matrix4x4 tex_xform;

170 tex_xform.set_rotation(Vector3(0, 0, M_PI / 2.0));

171 tmp.texcoord_apply_xform(tex_xform);

172 hinges->append(tmp);

173

174 // studs

175 for(int j=0; j<4; j++) {

176 Vector3 pos;

177

178 pos.x = (float)((j & 1) * 2 - 1) * HINGE_HEIGHT * 0.2;

179 pos.y = (float)((j & 2) - 1) * HINGE_HEIGHT * 0.3;

180

181 Matrix4x4 stud_xform = xform;

182 stud_xform.translate(pos);

183

184 Matrix4x4 squash;

185 squash.set_scaling(Vector3(1, 1, 0.5));

186

187 gen_sphere(&tmp, HINGE_RAD * 0.5, 8, 4);

188 tmp.apply_xform(stud_xform * squash);

189 hinges->append(tmp);

190 }

191 }

192

193 Object *ohinges = new Object;

194 ohinges->set_mesh(hinges);

195 ohinges->set_texture(img_hinge.texture());

196 obj.push_back(ohinges);

197

198 // debug object

199 /*

200 Mesh *dbgmesh = new Mesh;

201 gen_box(dbgmesh, 0.5, 0.5, 0.5);

202 xform.set_translation(Vector3(0, 0.4, 0));

203 xform.set_scaling(Vector3(1, 1, 1));

204 dbgmesh->apply_xform(xform);

205 Object *dbgobj = new Object;

206 dbgobj->set_mesh(dbgmesh);

207 dbgobj->set_texture(img_hinge.texture());

208 //dbgobj->tex_xform().set_scaling(Vector3(3, 3, 3));

209 obj.push_back(dbgobj);

210 */

211

212 Mesh *piece = new Mesh;

213 gen_revol(piece, 18, 15, piece_revol, 0);

214

215 Object *opiece = new Object;

216 opiece->set_mesh(piece);

217 opiece->xform().set_translation(Vector3(0, 0.2, 0));

218 obj.push_back(opiece);

219

220

221 // meshgen stats

222 printf("Generated board:\n %u meshes\n", (unsigned int)obj.size());

223 unsigned int polycount = 0;

224 for(size_t i=0; i<obj.size(); i++) {

225 const Mesh *m = obj[i]->get_mesh();

226 polycount += m->get_poly_count();

227 }

228 printf(" %u polygons\n", polycount);

229

230 return true;

231 }

232

233 static float wood(float x, float y)

234 {

235 float u = x;

236 float v = y;

237 x += 1.0;

238 x *= 10.0;

239 y *= 20.0;

240

241 float len = sqrt(x * x + y * y) + turbulence2(u * 6.0, v * 12.0, 2) * 1.2 +

242 turbulence2(u * 0.5, v, 2) * 15.0;

243 float val = fmod(len, 1.0);

244

245 //val = val * 0.5 + 0.5;

246 return val < 0.0 ? 0.0 : (val > 1.0 ? 1.0 : val);

247 }

248

249 static float wood_tile(float x, float y)

250 {

251 float u = x;

252 float v = y;

253 x *= 10.0;

254 y *= 10.0;

255

256 float val = x + pnoise2(u * 6.0, v, 6, 1) * 3.0 +

257 pturbulence2(u * 4, v * 2, 4, 2, 2) * 1.5 + pturbulence2(u * 8, v * 8, 8, 8, 2) * 0.5;

258

259 val = fmod(val, 1.0);

260 return val < 0.0 ? 0.0 : (val > 1.0 ? 1.0 : val);

261 }

262

263 static bool spike(float x, float y)

264 {

265 x = fmod(x * 5.0, 1.0);

266 return y < (x < 0.5 ? 2.0 * x : 2.0 - 2.0 * x);

267 }

268

269 static bool circle(float x, float y, float rad)

270 {

271 x = fmod(x * 5.0, 1.0) - 0.5;

272 y = (y - 0.65) * 5.0;

273 float len = sqrt(x * x + y * y);

274 return len < rad;

275 }

276

277 static bool diamond(float x, float y)

278 {

279 return y >= (1.0 - (x < 0.5 ? 2.0 * x : 2.0 - 2.0 * x)) * 0.3333333 + 0.88;

280 }

281

282 static bool center_circle(float x, float y, float rad)

283 {

284 x = x - 0.5;

285 y = 1.0 - y;

286 return sqrt(x * x + y * y) < rad;

287 }

288

289 bool Board::generate_textures()

290 {

291 // ---- board field texture ----

292 static const Vector3 wcol1 = Vector3(0.6, 0.4, 0.2);

293 static const Vector3 wcol2 = Vector3(0.53, 0.32, 0.1);

294 static const Vector3 wcol3 = Vector3(0.38, 0.25, 0.08);

295

296 img_field.create(1024, 1024);

297 unsigned char *pptr = img_field.pixels;

298 for(int i=0; i<img_field.height; i++) {

299 float v = (float)i / (float)img_field.height;

300

301 for(int j=0; j<img_field.width; j++) {

302 float u = (float)j / (float)img_field.width;

303

304 int r = 0, g = 0, b = 0;

305

306 float wood_val = wood(u, v);

307

308 // pattern mask

309 float x = u;

310 float y = v < 0.5 ? v * 2.0 : 2.0 - v * 2.0;

311 bool inside = false;

312

313 inside |= (spike(x, y + 0.33333) && !spike(x, y + 0.4)) ||

314 (spike(x, y + 0.5) && !spike(x, y + 0.68));

315 inside |= (circle(x, y, 0.12) && !circle(x, y, 0.1)) || circle(x, y, 0.06);

316 inside |= (diamond(x, y) && !diamond(x, y - 0.015)) ||

317 (diamond(x, y - 0.023) && !diamond(x, y - 0.028));

318 inside |= center_circle(x, y, 0.03);

319

320 Vector3 wood_color = lerp(wcol1, wcol2, wood_val) * 0.9;

321 if(inside) {

322 wood_color = lerp(wcol1, wcol2, 1.0 - wood_val) * 2.0;

323 }

324

325 r = (int)(wood_color.x * 255.0);

326 g = (int)(wood_color.y * 255.0);

327 b = (int)(wood_color.z * 255.0);

328

329 pptr[0] = r > 255 ? 255 : r;

330 pptr[1] = g > 255 ? 255 : g;

331 pptr[2] = b > 255 ? 255 : b;

332 pptr += 3;

333 }

334 }

335 img_field.texture();

336

337 // ---- generic wood texture ----

338 img_wood.create(256, 256);

339 pptr = img_wood.pixels;

340 for(int i=0; i<img_wood.height; i++) {

341 float v = (float)i / (float)img_wood.height;

342 for(int j=0; j<img_wood.width; j++) {

343 float u = (float)j / (float)img_wood.width;

344

345 float wood_val = wood_tile(u, v);

346 Vector3 wood_color = lerp(wcol2, wcol3, wood_val) * 0.7;

347

348 int r = (int)(wood_color.x * 255.0);

349 int g = (int)(wood_color.y * 255.0);

350 int b = (int)(wood_color.z * 255.0);

351

352 pptr[0] = r > 255 ? 255 : r;

353 pptr[1] = g > 255 ? 255 : g;

354 pptr[2] = b > 255 ? 255 : b;

355 pptr += 3;

356 }

357 }

358 img_wood.texture();

359

360 // ---- metal hinge diffuse texture ----

361 Vector3 rusty_col1 = Vector3(0.43, 0.46, 0.52);

362 Vector3 rusty_col2 = Vector3(0.52, 0.47, 0.43);

363

364 img_hinge.create(128, 128);

365 pptr = img_hinge.pixels;

366 for(int i=0; i<img_hinge.height; i++) {

367 float v = (float)i / (float)img_hinge.height;

368 for(int j=0; j<img_hinge.width; j++) {

369 float u = (float)j / (float)img_hinge.width;

370

371 // rust pattern

372 float w1 = fbm2(u * 4.0, v * 4.0, 3) * 0.5 + 0.5;

373 //float w2 = fbm2(u * 8.0, v * 8.0, 1) * 0.5 + 0.5;

374 Vector3 col = lerp(rusty_col1, rusty_col2 * 0.5, w1);

375

376 // center hinge split

377 if(fabs(v - 0.5) < 0.01) {

378 col *= 0.5;

379 }

380

381 int r = (int)(col.x * 255.0);

382 int g = (int)(col.y * 255.0);

383 int b = (int)(col.z * 255.0);

384

385 pptr[0] = r > 255 ? 255 : (r < 0 ? 0 : r);

386 pptr[1] = g > 255 ? 255 : (g < 0 ? 0 : g);

387 pptr[2] = b > 255 ? 255 : (b < 0 ? 0 : b);

388

389 pptr += 3;

390 }

391 }

392 img_hinge.texture();

393

394 return true;

395 }