git.mutantstargoat.com Git - vrtris/blob - src/gamescr.c

   1 #include <stdlib.h>
   2 #include <time.h>
   3 #include <assert.h>
   4 #include <imago2.h>
   5 #include <goatvr.h>
   6 #include "opengl.h"
   7 #include "game.h"
   8 #include "screen.h"
   9 #include "cmesh.h"
  10 #include "blocks.h"
  11 #include "logger.h"
  12 #include "gameinp.h"
  13
  14 int init_starfield(void);
  15 void draw_starfield(void);
  16
  17 static int init(void);
  18 static void cleanup(void);
  19 static void start(void);
  20 static void stop(void);
  21 static void update(float dt);
  22 static void draw(void);
  23 static void draw_block(int block, const int *pos, int rot);
  24 static void drawpf(void);
  25 static void reshape(int x, int y);
  26 static void keyboard(int key, int pressed);
  27 static void mouse(int bn, int pressed, int x, int y);
  28 static void motion(int x, int y);
  29 static void wheel(int dir);
  30
  31 static void update_cur_block(void);
  32 static void addscore(int nlines);
  33 static int spawn(void);
  34 static int collision(int block, const int *pos);
  35 static void stick(int block, const int *pos);
  36 static void erase_completed(void);
  37
  38 struct game_screen game_screen = {
  39         "game",
  40         1,      /* opaque */
  41         0,      /* next */
  42         init,
  43         cleanup,
  44         start,
  45         stop,
  46         update,
  47         draw,
  48         reshape,
  49         keyboard,
  50         mouse,
  51         motion,
  52         wheel
  53 };
  54
  55 static struct cmesh *blkmesh, *wellmesh;
  56 static unsigned int tex_well;
  57
  58 static float cam_theta, cam_phi, cam_dist = 30;
  59 static int bnstate[16];
  60 static int prev_mx, prev_my;
  61
  62 static long tick_interval;
  63
  64 /* dimensions of the playfield */
  65 #define PF_ROWS         18
  66 #define PF_COLS         10
  67
  68 #define PF_FULL         0x100
  69 #define PF_VIS          0x200
  70 #define PF_VIS_SHIFT    9
  71
  72 static unsigned int pfield[PF_ROWS * PF_COLS];
  73
  74 static int pos[2], next_pos[2];
  75 static int cur_block, next_block, prev_block;
  76 static int cur_rot, prev_rot;
  77 static int complines[4];
  78 static int num_complines;
  79 static int gameover;
  80 static int pause;
  81 static int score, level, lines;
  82 static int just_spawned;
  83
  84 #define NUM_LEVELS      21
  85 static const long level_speed[NUM_LEVELS] = {
  86         887, 820, 753, 686, 619, 552, 469, 368, 285, 184,
  87         167, 151, 134, 117, 107, 98, 88, 79, 69, 60, 50
  88 };
  89
  90 static const float blkcolor[][4] = {
  91         {1.0, 0.65, 0.0, 1},
  92         {0.16, 1.0, 0.4, 1},
  93         {0.65, 0.65, 1.0, 1},
  94         {1.0, 0.9, 0.1, 1},
  95         {0.0, 1.0, 1.0, 1},
  96         {1.0, 0.5, 1.0, 1},
  97         {1.0, 0.35, 0.2, 1},
  98         {0.5, 0.5, 0.5, 1}
  99 };
 100
 101 #define GAMEOVER_FILL_RATE      50
 102
 103
 104 static int init(void)
 105 {
 106         if(init_starfield() == -1) {
 107                 return -1;
 108         }
 109
 110         if(!(blkmesh = cmesh_alloc()) || cmesh_load(blkmesh, "data/noisecube.obj") == -1) {
 111                 error_log("failed to load block mesh\n");
 112                 return -1;
 113         }
 114
 115         if(!(wellmesh = cmesh_alloc()) || cmesh_load(wellmesh, "data/well.obj") == -1) {
 116                 error_log("failed to load well mesh\n");
 117                 return -1;
 118         }
 119
 120         if(!(tex_well = img_gltexture_load("data/grid.png"))) {
 121                 error_log("failed to load well texture\n");
 122                 return -1;
 123         }
 124
 125         return 0;
 126 }
 127
 128 static void cleanup(void)
 129 {
 130         cmesh_free(blkmesh);
 131         cmesh_free(wellmesh);
 132         glDeleteTextures(1, &tex_well);
 133 }
 134
 135 static void start(void)
 136 {
 137         srand(time(0));
 138
 139         pause = 0;
 140         gameover = 0;
 141         num_complines = 0;
 142         score = level = lines = 0;
 143         tick_interval = level_speed[0];
 144         cur_block = -1;
 145         prev_block = 0;
 146         next_block = rand() % NUM_BLOCKS;
 147
 148         memset(pfield, 0, PF_COLS * PF_ROWS * sizeof *pfield);
 149
 150         ginp_repeat(500, 75, GINP_LEFT | GINP_RIGHT | GINP_DOWN);
 151 }
 152
 153 static void stop(void)
 154 {
 155 }
 156
 157 #define JTHRES  0.6
 158
 159 #define CHECK_BUTTON(idx, gbn) \
 160         if(joy_bnstate & (1 << idx)) { \
 161                 ginp_bnstate |= gbn; \
 162         }
 163
 164 static void update_input(float dtsec)
 165 {
 166         int num_vr_sticks;
 167
 168         if((num_vr_sticks = goatvr_num_sticks()) > 0) {
 169                 float p[2];
 170
 171                 goatvr_stick_pos(0, p);
 172
 173                 if(fabs(p[0]) > fabs(joy_axis[GPAD_LSTICK_X])) {
 174                         joy_axis[GPAD_LSTICK_X] = p[0];
 175                 }
 176                 if(fabs(p[1]) > fabs(joy_axis[GPAD_LSTICK_Y])) {
 177                         joy_axis[GPAD_LSTICK_Y] = p[1];
 178                 }
 179         }
 180
 181         ginp_bnstate = 0;
 182
 183         /* joystick axis */
 184         if(joy_axis[GPAD_LSTICK_X] >= JTHRES) {
 185                 ginp_bnstate |= GINP_RIGHT;
 186         } else if(joy_axis[GPAD_LSTICK_X] <= -JTHRES) {
 187                 ginp_bnstate |= GINP_LEFT;
 188         }
 189
 190         if(joy_axis[GPAD_LSTICK_Y] >= JTHRES) {
 191                 ginp_bnstate |= GINP_DOWN;
 192         } else if(joy_axis[GPAD_LSTICK_Y] <= -JTHRES) {
 193                 ginp_bnstate |= GINP_UP;
 194         }
 195
 196         CHECK_BUTTON(GPAD_LEFT, GINP_LEFT);
 197         CHECK_BUTTON(GPAD_RIGHT, GINP_RIGHT);
 198         CHECK_BUTTON(GPAD_UP, GINP_UP);
 199         CHECK_BUTTON(GPAD_DOWN, GINP_DOWN);
 200         CHECK_BUTTON(GPAD_A, GINP_ROTATE);
 201         CHECK_BUTTON(GPAD_START, GINP_PAUSE);
 202
 203         update_ginp();
 204
 205         if(GINP_PRESS(GINP_LEFT)) {
 206                 game_keyboard('a', 1);
 207         }
 208         if(GINP_PRESS(GINP_RIGHT)) {
 209                 game_keyboard('d', 1);
 210         }
 211         if(GINP_PRESS(GINP_DOWN)) {
 212                 game_keyboard('s', 1);
 213         }
 214         if(GINP_PRESS(GINP_UP)) {
 215                 game_keyboard('\t', 1);
 216         }
 217         if(GINP_PRESS(GINP_ROTATE)) {
 218                 game_keyboard('w', 1);
 219         }
 220         if(GINP_PRESS(GINP_PAUSE)) {
 221                 game_keyboard('p', 1);
 222         }
 223 }
 224
 225 static void update(float dtsec)
 226 {
 227         static long prev_tick;
 228         long dt;
 229
 230         update_input(dtsec);
 231
 232         if(pause) {
 233                 prev_tick = time_msec;
 234                 return;
 235         }
 236         dt = time_msec - prev_tick;
 237
 238         if(gameover) {
 239                 int i, row = PF_ROWS - gameover;
 240                 unsigned int *ptr;
 241
 242                 if(dt < GAMEOVER_FILL_RATE) {
 243                         return;
 244                 }
 245
 246                 if(row >= 0) {
 247                         ptr = pfield + row * PF_COLS;
 248                         for(i=0; i<PF_COLS; i++) {
 249                                 *ptr++ = PF_VIS | PF_FULL | 7;
 250                         }
 251
 252                         gameover++;
 253                         prev_tick = time_msec;
 254                 }
 255                 return;
 256         }
 257
 258         if(num_complines) {
 259                 /* lines where completed, we're in blinking mode */
 260                 int i, j, blink = dt >> 8;
 261
 262                 if(blink > 6) {
 263                         erase_completed();
 264                         num_complines = 0;
 265                         return;
 266                 }
 267
 268                 for(i=0; i<num_complines; i++) {
 269                         unsigned int *ptr = pfield + complines[i] * PF_COLS;
 270                         for(j=0; j<PF_COLS; j++) {
 271                                 *ptr = (*ptr & ~PF_VIS) | ((blink & 1) << PF_VIS_SHIFT);
 272                                 ptr++;
 273                         }
 274                 }
 275                 return;
 276         }
 277
 278         /* fall */
 279         while(dt >= tick_interval) {
 280                 if(cur_block >= 0) {
 281                         just_spawned = 0;
 282                         next_pos[0] = pos[0] + 1;
 283                         if(collision(cur_block, next_pos)) {
 284                                 next_pos[0] = pos[0];
 285                                 stick(cur_block, next_pos);
 286                                 return;
 287                         }
 288                 } else {
 289                         /* respawn */
 290                         if(spawn() == -1) {
 291                                 gameover = 1;
 292                                 return;
 293                         }
 294                 }
 295
 296                 dt -= tick_interval;
 297                 prev_tick = time_msec;
 298         }
 299
 300         update_cur_block();
 301 }
 302
 303 static void draw(void)
 304 {
 305         const float lpos[] = {-1, 1, 6, 1};
 306
 307         glTranslatef(0, 0, -cam_dist);
 308         glRotatef(cam_phi, 1, 0, 0);
 309         glRotatef(cam_theta, 0, 1, 0);
 310
 311         glLightfv(GL_LIGHT0, GL_POSITION, lpos);
 312
 313         draw_starfield();
 314
 315         glPushAttrib(GL_ENABLE_BIT);
 316         glBindTexture(GL_TEXTURE_2D, tex_well);
 317         glEnable(GL_TEXTURE_2D);
 318         glDisable(GL_LIGHTING);
 319         glColor3f(1, 1, 1);
 320         cmesh_draw(wellmesh);
 321         glPopAttrib();
 322
 323         /* center playfield */
 324         glPushMatrix();
 325         glTranslatef(-PF_COLS / 2 + 0.5, PF_ROWS / 2 - 0.5, 0);
 326
 327         drawpf();
 328         if(cur_block >= 0) {
 329                 draw_block(cur_block, pos, cur_rot);
 330         }
 331
 332         glPopMatrix();
 333 }
 334
 335 static const float blkspec[] = {0.85, 0.85, 0.85, 1};
 336
 337 static void draw_block(int block, const int *pos, int rot)
 338 {
 339         int i;
 340         unsigned char *p = blocks[block][rot];
 341
 342         glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blkcolor[block]);
 343         glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, blkspec);
 344         glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 50.0f);
 345
 346         for(i=0; i<4; i++) {
 347                 int x = pos[1] + BLKX(*p);
 348                 int y = pos[0] + BLKY(*p);
 349                 p++;
 350
 351                 if(y < 0) continue;
 352
 353                 glPushMatrix();
 354                 glTranslatef(x, -y, 0);
 355                 cmesh_draw(blkmesh);
 356                 glPopMatrix();
 357         }
 358 }
 359
 360 static void drawpf(void)
 361 {
 362         int i, j;
 363         unsigned int *sptr = pfield;
 364
 365         for(i=0; i<PF_ROWS; i++) {
 366                 for(j=0; j<PF_COLS; j++) {
 367                         unsigned int val = *sptr++;
 368
 369                         glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blkcolor[val & 7]);
 370                         glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, blkspec);
 371                         glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 50.0f);
 372
 373                         if((val & (PF_FULL | PF_VIS)) == (PF_FULL | PF_VIS)) {
 374                                 glPushMatrix();
 375                                 glTranslatef(j, -i, 0);
 376                                 cmesh_draw(blkmesh);
 377                                 glPopMatrix();
 378                         }
 379                 }
 380         }
 381 }
 382
 383
 384 static void reshape(int x, int y)
 385 {
 386 }
 387
 388 static void keyboard(int key, int pressed)
 389 {
 390         /*char *name = 0;*/
 391
 392         if(!pressed) return;
 393
 394         switch(key) {
 395         case 'a':
 396         case KEY_LEFT:
 397                 if(!pause) {
 398                         next_pos[1] = pos[1] - 1;
 399                         if(collision(cur_block, next_pos)) {
 400                                 next_pos[1] = pos[1];
 401                         } else {
 402                                 /*snd_shift();*/
 403                         }
 404                 }
 405                 break;
 406
 407         case 'd':
 408         case KEY_RIGHT:
 409                 if(!pause) {
 410                         next_pos[1] = pos[1] + 1;
 411                         if(collision(cur_block, next_pos)) {
 412                                 next_pos[1] = pos[1];
 413                         } else {
 414                                 /*snd_shift();*/
 415                         }
 416                 }
 417                 break;
 418
 419         case 'w':
 420         case KEY_UP:
 421         case ' ':
 422                 if(!pause) {
 423                         prev_rot = cur_rot;
 424                         cur_rot = (cur_rot + 1) & 3;
 425                         if(collision(cur_block, next_pos)) {
 426                                 cur_rot = prev_rot;
 427                         } else {
 428                                 /*snd_rot();*/
 429                         }
 430                 }
 431                 break;
 432
 433         case 's':
 434         case KEY_DOWN:
 435                 /* ignore drops until the first update after a spawn */
 436                 if(cur_block >= 0 && !just_spawned && !pause) {
 437                         next_pos[0] = pos[0] + 1;
 438                         if(collision(cur_block, next_pos)) {
 439                                 next_pos[0] = pos[0];
 440                                 update_cur_block();
 441                                 stick(cur_block, next_pos);     /* stick immediately */
 442                         }
 443                 }
 444                 break;
 445
 446         case '\n':
 447         case '\t':
 448         case '0':
 449                 if(!pause && cur_block >= 0) {
 450                         next_pos[0] = pos[0] + 1;
 451                         while(!collision(cur_block, next_pos)) {
 452                                 next_pos[0]++;
 453                         }
 454                         next_pos[0]--;
 455                         update_cur_block();
 456                         stick(cur_block, next_pos);     /* stick immediately */
 457                 }
 458                 break;
 459
 460         case 'p':
 461                 if(gameover) {
 462                         /*
 463                         if(score && is_highscore(score)) {
 464                                 name = name_screen(score);
 465                         }
 466                         save_score(name, score, lines, level);
 467                         */
 468                         /* TODO: pop screen */
 469                 } else {
 470                         pause ^= 1;
 471                 }
 472                 break;
 473
 474         case '\b':
 475                 /*
 476                 if(score && is_highscore(score)) {
 477                         name = name_screen(score);
 478                 }
 479                 save_score(name, score, lines, level);
 480                 */
 481                 /* TODO: pop screen */
 482                 break;
 483
 484         default:
 485                 break;
 486         }
 487 }
 488
 489 static void mouse(int bn, int pressed, int x, int y)
 490 {
 491         bnstate[bn] = pressed;
 492         prev_mx = x;
 493         prev_my = y;
 494 }
 495
 496 static void motion(int x, int y)
 497 {
 498         float dx = x - prev_mx;
 499         float dy = y - prev_my;
 500         prev_mx = x;
 501         prev_my = y;
 502
 503         if(bnstate[0]) {
 504                 cam_theta += dx * 0.5;
 505                 cam_phi += dy * 0.5;
 506
 507                 if(cam_phi < -90) cam_phi = -90;
 508                 if(cam_phi > 90) cam_phi = 90;
 509         }
 510         if(bnstate[2]) {
 511                 cam_dist += dy * 0.1;
 512                 if(cam_dist < 0) cam_dist = 0;
 513         }
 514 }
 515
 516 static void wheel(int dir)
 517 {
 518 }
 519
 520 static void update_cur_block(void)
 521 {
 522         if(cur_block < 0) return;
 523
 524         memcpy(pos, next_pos, sizeof pos);
 525         prev_rot = cur_rot;
 526 }
 527
 528 static void addscore(int nlines)
 529 {
 530         static const int stab[] = {40, 100, 300, 1200}; /* bonus per line completed */
 531
 532         assert(nlines < 5);
 533
 534         score += stab[nlines - 1] * (level + 1);
 535         lines += nlines;
 536
 537         level = lines / 10;
 538         if(level > NUM_LEVELS - 1) level = NUM_LEVELS - 1;
 539
 540         tick_interval = level_speed[level];
 541 }
 542
 543 static int spawn(void)
 544 {
 545         int r, tries = 2;
 546
 547         do {
 548                 r = rand() % NUM_BLOCKS;
 549         } while(tries-- > 0 && (r | prev_block | next_block) == prev_block);
 550
 551         cur_block = next_block;
 552         next_block = r;
 553
 554         prev_rot = cur_rot = 0;
 555         pos[0] = block_spawnpos[cur_block][0];
 556         next_pos[0] = pos[0] + 1;
 557         pos[1] = next_pos[1] = PF_COLS / 2 + block_spawnpos[cur_block][1];
 558
 559         if(collision(cur_block, next_pos)) {
 560                 return -1;
 561         }
 562
 563         just_spawned = 1;
 564         return 0;
 565 }
 566
 567 static int collision(int block, const int *pos)
 568 {
 569         int i;
 570         unsigned char *p = blocks[block][cur_rot];
 571
 572         for(i=0; i<4; i++) {
 573                 int x = pos[1] + BLKX(*p);
 574                 int y = pos[0] + BLKY(*p);
 575                 p++;
 576
 577                 if(y < 0) continue;
 578
 579                 if(x < 0 || x >= PF_COLS || y >= PF_ROWS) return 1;
 580                 if(pfield[y * PF_COLS + x] & PF_FULL) return 1;
 581         }
 582
 583         return 0;
 584 }
 585
 586 static void stick(int block, const int *pos)
 587 {
 588         int i, j, nblank;
 589         unsigned int *pfline;
 590         unsigned char *p = blocks[block][cur_rot];
 591
 592         num_complines = 0;
 593         prev_block = cur_block; /* used by the spawn routine */
 594         cur_block = -1;
 595
 596         for(i=0; i<4; i++) {
 597                 int x = pos[1] + BLKX(*p);
 598                 int y = pos[0] + BLKY(*p);
 599                 p++;
 600
 601                 pfline = pfield + y * PF_COLS;
 602                 pfline[x] = PF_FULL | PF_VIS | block;
 603
 604                 nblank = 0;
 605                 for(j=0; j<PF_COLS; j++) {
 606                         if(!(pfline[j] & PF_FULL)) {
 607                                 nblank++;
 608                         }
 609                 }
 610
 611                 if(nblank == 0) {
 612                         complines[num_complines++] = y;
 613                 }
 614         }
 615
 616         /*snd_stick();*/
 617
 618         if(num_complines) {
 619                 addscore(num_complines);
 620         }
 621 }
 622
 623 static void erase_completed(void)
 624 {
 625         int i, j, srow, drow;
 626         unsigned int *pfstart = pfield;
 627         unsigned int *dptr;
 628
 629         /* sort completed lines from highest to lowest row number */
 630         for(i=0; i<num_complines-1; i++) {
 631                 for(j=i+1; j<num_complines; j++) {
 632                         if(complines[j] > complines[i]) {
 633                                 int tmp = complines[j];
 634                                 complines[j] = complines[i];
 635                                 complines[i] = tmp;
 636                         }
 637                 }
 638         }
 639
 640         srow = drow = PF_ROWS - 1;
 641         dptr = pfstart + drow * PF_COLS;
 642
 643         for(i=0; i<PF_ROWS; i++) {
 644                 for(j=0; j<num_complines; j++) {
 645                         if(complines[j] == srow) {
 646                                 srow--;
 647                         }
 648                 }
 649
 650                 if(srow < 0) {
 651                         for(j=0; j<PF_COLS; j++) {
 652                                 dptr[j] &= ~PF_FULL;
 653                         }
 654
 655                 } else if(srow != drow) {
 656                         unsigned int *sptr = pfstart + srow * PF_COLS;
 657                         memcpy(dptr, sptr, PF_COLS * sizeof *dptr);
 658                 }
 659
 660                 srow--;
 661                 drow--;
 662                 dptr -= PF_COLS;
 663         }
 664 }
 665