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#ifndef lint |
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static const char RCSid[] = "$Id: cvmaze.c,v 1.1 2003/02/22 02:07:26 greg Exp $"; |
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#endif |
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/* |
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* THE MAZE GAME definitions and global structures |
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* |
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* Written by Greg Ward 8/4/84 |
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*/ |
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|
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|
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#include "meta.h" |
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|
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|
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#define ERROR (-1) /* something wrong */ |
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|
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#define OK 0 /* everything swell */ |
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|
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#define TRUE 1 |
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|
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#define FALSE 0 |
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|
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#define UP 1 |
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|
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#define DOWN 2 |
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|
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#define LEFT 3 |
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|
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#define RIGHT 4 |
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|
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#define min(a, b) ((a) < (b) ? (a) : (b)) |
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|
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#define max(a, b) ((a) > (b) ? (a) : (b)) |
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|
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#define VSEP '|' /* vertical separator */ |
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|
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#define HSEP '-' /* horizontal separator */ |
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|
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#define ISECT '+' /* intersection character */ |
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|
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#define MARKS " ^v<>*" /* maze markings */ |
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|
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#define TUP 1 /* mark for trace up */ |
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|
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#define TDOWN 2 /* mark for trace down */ |
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|
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#define TLEFT 3 /* mark for trace left */ |
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|
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#define TRIGHT 4 /* mark for trace right */ |
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|
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#define MAN 5 /* mark for player */ |
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|
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#define MAXSIDE 50 /* maximum maze side */ |
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|
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#define YES 1 /* edge is there */ |
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|
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#define NO 0 /* edge isn't there */ |
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|
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#define MAYBE 2 /* undecided */ |
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|
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|
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#define DIRECTION char |
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|
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#define EDGE char |
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|
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#define MRKINDX char |
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|
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struct MAZE { |
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EDGE r0[MAXSIDE+1][MAXSIDE], |
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c0[MAXSIDE+1][MAXSIDE]; |
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|
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int nrows, ncols; |
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|
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MRKINDX mark[MAXSIDE][MAXSIDE]; |
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int rt, rb, cl, cr; |
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|
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}; |
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|
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|
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|
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/* |
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* Convert maze to metafile |
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*/ |
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|
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|
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|
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|
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|
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struct MAZE amaze; /* our working maze */ |
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int cellsize; /* the size of a maze cell (in metacoordinates) */ |
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|
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char *progname; |
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|
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|
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main(argc, argv) |
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|
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int argc; |
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char **argv; |
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|
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{ |
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FILE *fp; |
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|
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progname = *argv++; |
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argc--; |
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|
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if (argc) |
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|
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for ( ; argc; argc--, argv++) { |
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if ((fp = fopen(*argv, "r")) == NULL) { |
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fprintf(stderr, "%s: no such file\n", *argv); |
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exit(1); |
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} |
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execute(fp); |
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fclose(fp); |
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} |
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|
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else |
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|
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execute(stdin); |
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|
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writeof(stdout); |
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|
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return(0); |
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} |
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|
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|
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|
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|
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execute(fp) /* process file fp */ |
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|
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FILE *fp; |
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{ |
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while (readmaze(fp, &amaze, MARKS) != ERROR) { |
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cellsize = (XYSIZE-1)/max(amaze.nrows, amaze.ncols); |
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printmaze(stdout, &amaze, MARKS); |
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pglob(PEOP, 0200, NULL); |
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} |
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|
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} |
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|
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|
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|
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|
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|
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printmaze(fp, mzp, mrks) /* print maze to fp */ |
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|
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FILE *fp; |
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struct MAZE *mzp; |
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char *mrks; |
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|
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{ |
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int i; |
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|
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for (i = mzp->rt; i < mzp->rb; i++) { |
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|
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putrline(fp, mzp, i); |
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putcline(fp, mzp, i, mrks); |
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|
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} |
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|
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putrline(fp, mzp, mzp->rb); |
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|
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} |
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|
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|
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|
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|
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putrline(fp, mzp, row) /* print horizontal row to fp */ |
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|
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FILE *fp; |
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struct MAZE *mzp; |
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int row; |
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|
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{ |
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register int j; |
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|
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for (j = mzp->cl; j < mzp->cr; j++) |
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if (mzp->r0[row][j] == YES) |
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plseg(0, j*cellsize, (XYSIZE-1)-row*cellsize, (j+1)*cellsize, (XYSIZE-1)-row*cellsize); |
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|
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} |
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|
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|
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|
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|
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|
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putcline(fp, mzp, row, mrks) /* print column line to fp */ |
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|
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FILE *fp; |
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struct MAZE *mzp; |
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int row; |
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char mrks[]; |
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|
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{ |
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register int j; |
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char s[2]; |
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|
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s[1] = '\0'; |
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|
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for (j = mzp->cl; j <= mzp->cr; j++) |
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if (mzp->c0[j][row] == YES) |
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plseg(0, j*cellsize, (XYSIZE-1)-row*cellsize, j*cellsize, (XYSIZE-1)-(row+1)*cellsize); |
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|
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} |
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|
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|
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|
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|
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|
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readmaze(fp, mzp, mrks) /* read maze from fp into mzp */ |
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|
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FILE *fp; |
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struct MAZE *mzp; |
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char *mrks; |
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|
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{ |
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int i; |
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|
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mzp->rt = mzp->rb = mzp->cl = mzp->cr = mzp->nrows = mzp ->ncols = 0; |
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|
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if ((mzp->cr = mzp->ncols = getrline(fp, mzp, 0)) == 0) |
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return(ERROR); |
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|
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for (i = 0; i <= MAXSIDE; i++) { |
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|
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if (getcline(fp, mzp, i, mrks) != mzp->ncols) |
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break; |
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|
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if (getrline(fp, mzp, i+1) != mzp->ncols) |
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return(ERROR); |
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|
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} |
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|
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if (i > MAXSIDE) |
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return(ERROR); |
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|
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mzp->rb = mzp->nrows = i; |
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return(OK); |
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} |
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|
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|
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|
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getrline(fp, mzp, row) /* get row from fp */ |
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|
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FILE *fp; |
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struct MAZE *mzp; |
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int row; |
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|
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{ |
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int j, nc; |
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char *fgets(), linbuf[4 + 4*MAXSIDE]; |
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|
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if (fgets(linbuf, sizeof(linbuf), fp) == NULL) |
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return(0); |
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|
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nc = (strlen(linbuf) - 2) / 4; |
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|
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for (j = 0; j < nc; j++) |
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|
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switch (linbuf[2 + 4*j]) { |
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|
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case HSEP: |
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mzp->r0[row][j] = YES; |
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break; |
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|
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case ' ': |
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mzp->r0[row][j] = NO; |
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break; |
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|
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default: |
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return(0); |
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break; |
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|
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} |
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|
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return(nc); |
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} |
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|
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|
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|
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|
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|
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getcline(fp, mzp, row, mrks) /* get column line from fp */ |
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|
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FILE *fp; |
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struct MAZE *mzp; |
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int row; |
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char mrks[]; |
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|
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{ |
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int j, nc, k; |
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char *fgets(), linbuf[4 + 4*MAXSIDE]; |
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|
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if (fgets(linbuf, sizeof(linbuf), fp) == NULL) |
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return(0); |
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|
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nc = (strlen(linbuf) - 2) / 4; |
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|
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for (j = 0; j < nc; j++) { |
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|
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switch (linbuf[4*j]) { |
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|
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case VSEP: |
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mzp->c0[j][row] = YES; |
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break; |
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|
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case ' ': |
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mzp->c0[j][row] = NO; |
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break; |
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|
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default: |
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return(0); |
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break; |
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|
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} |
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|
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for (k = 0; mrks[k]; k++) |
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|
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if (linbuf[2 + 4*j] == mrks[k]) { |
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mzp->mark[row][j] = k; |
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break; |
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} |
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|
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if (!mrks[k]) |
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return(0); |
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|
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} |
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|
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switch (linbuf[4*nc]) { |
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|
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case VSEP: |
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mzp->c0[nc][row] = YES; |
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break; |
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|
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case ' ': |
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mzp->c0[nc][row] = NO; |
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break; |
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|
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default: |
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return(0); |
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break; |
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|
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} |
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|
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return(nc); |
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} |
