Mercurial > hg > terminal-chess / file comparison
comparison: src/chess/rules.c
src/chess/rules.c
- changeset 50
- 41017d0a72c5
- parent 49
- 02c509a44e98
- child 51
- 84f2e380a434
equal
deleted
inserted
replaced
| 49:02c509a44e98 | 50:41017d0a72c5 |
|---|---|
| 40 *lastmovecopy = *(simulation.lastmove); | 40 *lastmovecopy = *(simulation.lastmove); |
| 41 simulation.movelist = simulation.lastmove = lastmovecopy; | 41 simulation.movelist = simulation.lastmove = lastmovecopy; |
| 42 } | 42 } |
| 43 | 43 |
| 44 return simulation; | 44 return simulation; |
| 45 } | |
| 46 | |
| 47 void gamestate_init(GameState *gamestate) { | |
| 48 memset(gamestate, 0, sizeof(GameState)); | |
| 49 | |
| 50 Board initboard = { | |
| 51 {WROOK, WKNIGHT, WBISHOP, WQUEEN, WKING, WBISHOP, WKNIGHT, WROOK}, | |
| 52 {WPAWN, WPAWN, WPAWN, WPAWN, WPAWN, WPAWN, WPAWN, WPAWN}, | |
| 53 {0, 0, 0, 0, 0, 0, 0, 0}, | |
| 54 {0, 0, 0, 0, 0, 0, 0, 0}, | |
| 55 {0, 0, 0, 0, 0, 0, 0, 0}, | |
| 56 {0, 0, 0, 0, 0, 0, 0, 0}, | |
| 57 {BPAWN, BPAWN, BPAWN, BPAWN, BPAWN, BPAWN, BPAWN, BPAWN}, | |
| 58 {BROOK, BKNIGHT, BBISHOP, BQUEEN, BKING, BBISHOP, BKNIGHT, BROOK} | |
| 59 }; | |
| 60 memcpy(gamestate->board, initboard, sizeof(Board)); | |
| 45 } | 61 } |
| 46 | 62 |
| 47 void gamestate_cleanup(GameState *gamestate) { | 63 void gamestate_cleanup(GameState *gamestate) { |
| 48 MoveList *elem; | 64 MoveList *elem; |
| 49 elem = gamestate->movelist; | 65 elem = gamestate->movelist; |
| 585 } else { | 601 } else { |
| 586 return INVALID_POSITION; | 602 return INVALID_POSITION; |
| 587 } | 603 } |
| 588 } | 604 } |
| 589 | 605 |
| 590 int eval_move(GameState *gamestate, char *mstr, Move *move) { | 606 int eval_move(GameState *gamestate, char *mstr, Move *move, uint8_t color) { |
| 591 memset(move, 0, sizeof(Move)); | 607 memset(move, 0, sizeof(Move)); |
| 592 move->fromfile = POS_UNSPECIFIED; | 608 move->fromfile = POS_UNSPECIFIED; |
| 593 move->fromrow = POS_UNSPECIFIED; | 609 move->fromrow = POS_UNSPECIFIED; |
| 594 | 610 |
| 595 size_t len = strlen(mstr); | 611 size_t len = strlen(mstr); |
| 610 if (len > 3 && mstr[len-2] == '=') { | 626 if (len > 3 && mstr[len-2] == '=') { |
| 611 move->promotion = getpiece(mstr[len-1]); | 627 move->promotion = getpiece(mstr[len-1]); |
| 612 if (!move->promotion) { | 628 if (!move->promotion) { |
| 613 return INVALID_MOVE_SYNTAX; | 629 return INVALID_MOVE_SYNTAX; |
| 614 } else { | 630 } else { |
| 615 move->promotion |= gamestate->mycolor; | 631 move->promotion |= color; |
| 616 len -= 2; | 632 len -= 2; |
| 617 mstr[len] = 0; | 633 mstr[len] = 0; |
| 618 } | 634 } |
| 619 } | 635 } |
| 620 | 636 |
| 627 if (strcmp(mstr, "O-O") == 0) { | 643 if (strcmp(mstr, "O-O") == 0) { |
| 628 /* king side castling */ | 644 /* king side castling */ |
| 629 move->piece = KING; | 645 move->piece = KING; |
| 630 move->fromfile = fileidx('e'); | 646 move->fromfile = fileidx('e'); |
| 631 move->tofile = fileidx('g'); | 647 move->tofile = fileidx('g'); |
| 632 move->fromrow = move->torow = gamestate->mycolor == WHITE ? 0 : 7; | 648 move->fromrow = move->torow = color == WHITE ? 0 : 7; |
| 633 } else { | 649 } else { |
| 634 /* move (e.g. "Nf3") */ | 650 /* move (e.g. "Nf3") */ |
| 635 move->piece = getpiece(mstr[0]); | 651 move->piece = getpiece(mstr[0]); |
| 636 move->tofile = fileidx(mstr[1]); | 652 move->tofile = fileidx(mstr[1]); |
| 637 move->torow = rowidx(mstr[2]); | 653 move->torow = rowidx(mstr[2]); |
| 662 if (strcmp(mstr, "O-O-O") == 0) { | 678 if (strcmp(mstr, "O-O-O") == 0) { |
| 663 /* queen side castling "O-O-O" */ | 679 /* queen side castling "O-O-O" */ |
| 664 move->piece = KING; | 680 move->piece = KING; |
| 665 move->fromfile = fileidx('e'); | 681 move->fromfile = fileidx('e'); |
| 666 move->tofile = fileidx('c'); | 682 move->tofile = fileidx('c'); |
| 667 move->fromrow = move->torow = gamestate->mycolor == WHITE ? 0 : 7; | 683 move->fromrow = move->torow = color == WHITE ? 0 : 7; |
| 668 } else { | 684 } else { |
| 669 move->piece = getpiece(mstr[0]); | 685 move->piece = getpiece(mstr[0]); |
| 670 if (mstr[2] == 'x') { | 686 if (mstr[2] == 'x') { |
| 671 move->capture = 1; | 687 move->capture = 1; |
| 672 if (move->piece) { | 688 if (move->piece) { |
| 699 } | 715 } |
| 700 | 716 |
| 701 | 717 |
| 702 if (move->piece) { | 718 if (move->piece) { |
| 703 if (move->piece == PAWN | 719 if (move->piece == PAWN |
| 704 && move->torow == (gamestate->mycolor==WHITE?7:0) | 720 && move->torow == (color==WHITE?7:0) |
| 705 && !move->promotion) { | 721 && !move->promotion) { |
| 706 return NEED_PROMOTION; | 722 return NEED_PROMOTION; |
| 707 } | 723 } |
| 708 | 724 |
| 709 move->piece |= gamestate->mycolor; | 725 move->piece |= color; |
| 710 if (move->fromfile == POS_UNSPECIFIED | 726 if (move->fromfile == POS_UNSPECIFIED |
| 711 || move->fromrow == POS_UNSPECIFIED) { | 727 || move->fromrow == POS_UNSPECIFIED) { |
| 712 return getlocation(gamestate, move); | 728 return getlocation(gamestate, move); |
| 713 } else { | 729 } else { |
| 714 return chkidx(move) ? VALID_MOVE_SYNTAX : INVALID_POSITION; | 730 return chkidx(move) ? VALID_MOVE_SYNTAX : INVALID_POSITION; |
