* Eric S. Raymond <esr@snark.thyrsus.com> July 22 1995. Mouse support
* added September 20th 1995.
*
- * $Id: knight.c,v 1.15 1999/11/13 23:39:10 tom Exp $
+ * $Id: knight.c,v 1.18 2000/10/15 18:36:34 Brian.Raiter Exp $
*/
#include <test.priv.h>
#define CXINV(x) (((x) - 1) / 4)
#define CYINV(y) (((y) - 2) / 2)
-typedef struct
-{
- short x, y;
-}
-cell;
-
-static short board[BDEPTH][BWIDTH]; /* the squares */
-static int rw,col; /* current row and column */
-static int lastrow,lastcol; /* last location visited */
-static cell history[BDEPTH*BWIDTH]; /* choice history */
-static int movecount; /* count of moves so far */
-static WINDOW *boardwin; /* the board window */
-static WINDOW *helpwin; /* the help window */
-static WINDOW *msgwin; /* the message window */
-static chtype trail = '#'; /* trail character */
-static chtype plus = '+'; /* cursor hot-spot character */
-static chtype minus = '-'; /* possible-move character */
-static chtype oldch;
+typedef struct {
+ short x, y;
+} cell;
+
+static short board[BDEPTH][BWIDTH]; /* the squares */
+static int rw, col; /* current row and column */
+static int lastrow, lastcol; /* last location visited */
+static cell history[BDEPTH * BWIDTH + 1]; /* choice history */
+static int movecount; /* count of moves so far */
+static WINDOW *boardwin; /* the board window */
+static WINDOW *helpwin; /* the help window */
+static WINDOW *msgwin; /* the message window */
+static chtype trail = '#'; /* trail character */
+static chtype plus = '+'; /* cursor hot-spot character */
+static chtype minus = '-'; /* possible-move character */
+static chtype oldch;
static void init(void);
static void play(void);
static bool evalmove(int, int);
static bool chkmoves(void);
static bool chksqr(int, int);
-static int iabs(int);
+static int iabs(int);
-int main(
- int argc GCC_UNUSED,
- char *argv[] GCC_UNUSED)
+int
+main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
{
init();
return EXIT_SUCCESS;
}
-static void init (void)
+static void
+init(void)
{
- srand ((unsigned)getpid());
- initscr ();
- cbreak (); /* immediate char return */
- noecho (); /* no immediate echo */
+ srand((unsigned) getpid());
+ initscr();
+ cbreak(); /* immediate char return */
+ noecho(); /* no immediate echo */
boardwin = newwin(BDEPTH * 2 + 1, BWIDTH * 4 + 1, BOARDY, BOARDX);
helpwin = newwin(0, 0, INSTRY, INSTRX);
- msgwin = newwin(1, INSTRX-1, NOTIFYY, 0);
+ msgwin = newwin(1, INSTRX - 1, NOTIFYY, 0);
scrollok(msgwin, TRUE);
keypad(boardwin, TRUE);
- if (has_colors())
- {
+ if (has_colors()) {
int bg = COLOR_BLACK;
start_color();
-#ifdef HAVE_USE_DEFAULT_COLORS
+#if HAVE_USE_DEFAULT_COLORS
if (use_default_colors() == OK)
bg = -1;
#endif
- (void) init_pair(TRAIL_COLOR, COLOR_CYAN, bg);
- (void) init_pair(PLUS_COLOR, COLOR_RED, bg);
+ (void) init_pair(TRAIL_COLOR, COLOR_CYAN, bg);
+ (void) init_pair(PLUS_COLOR, COLOR_RED, bg);
(void) init_pair(MINUS_COLOR, COLOR_GREEN, bg);
trail |= COLOR_PAIR(TRAIL_COLOR);
- plus |= COLOR_PAIR(PLUS_COLOR);
+ plus |= COLOR_PAIR(PLUS_COLOR);
minus |= COLOR_PAIR(MINUS_COLOR);
}
-
#ifdef NCURSES_MOUSE_VERSION
- (void) mousemask(BUTTON1_CLICKED, (mmask_t *)NULL);
-#endif /* NCURSES_MOUSE_VERSION*/
+ (void) mousemask(BUTTON1_CLICKED, (mmask_t *) NULL);
+#endif /* NCURSES_MOUSE_VERSION */
oldch = minus;
}
-static void help1(void)
+static void
+help1(void)
/* game explanation -- initial help screen */
{
- (void)waddstr(helpwin, "Knight's move is a solitaire puzzle. Your\n");
- (void)waddstr(helpwin, "objective is to visit each square of the \n");
- (void)waddstr(helpwin, "chessboard exactly once by making knight's\n");
- (void)waddstr(helpwin, "moves (one square right or left followed \n");
- (void)waddstr(helpwin, "by two squares up or down, or two squares \n");
- (void)waddstr(helpwin, "right or left followed by one square up or\n");
- (void)waddstr(helpwin, "down). You may start anywhere.\n\n");
-
- (void)waddstr(helpwin, "Use arrow keys to move the cursor around.\n");
- (void)waddstr(helpwin, "When you want to move your knight to the \n");
- (void)waddstr(helpwin, "cursor location, press <space> or Enter.\n");
- (void)waddstr(helpwin, "Illegal moves will be rejected with an \n");
- (void)waddstr(helpwin, "audible beep.\n\n");
- (void)waddstr(helpwin, "The program will detect if you solve the\n");
- (void)waddstr(helpwin, "puzzle; also inform you when you run out\n");
- (void)waddstr(helpwin, "of legal moves.\n\n");
-
- (void)mvwaddstr(helpwin, NOTIFYY-INSTRY, 0,
- "Press `?' to go to keystroke help.");
+ (void) waddstr(helpwin, "Knight's move is a solitaire puzzle. Your\n");
+ (void) waddstr(helpwin, "objective is to visit each square of the \n");
+ (void) waddstr(helpwin, "chessboard exactly once by making knight's\n");
+ (void) waddstr(helpwin, "moves (one square right or left followed \n");
+ (void) waddstr(helpwin, "by two squares up or down, or two squares \n");
+ (void) waddstr(helpwin, "right or left followed by one square up or\n");
+ (void) waddstr(helpwin, "down). You may start anywhere.\n\n");
+
+ (void) waddstr(helpwin, "Use arrow keys to move the cursor around.\n");
+ (void) waddstr(helpwin, "When you want to move your knight to the \n");
+ (void) waddstr(helpwin, "cursor location, press <space> or Enter.\n");
+ (void) waddstr(helpwin, "Illegal moves will be rejected with an \n");
+ (void) waddstr(helpwin, "audible beep.\n\n");
+ (void) waddstr(helpwin, "The program will detect if you solve the\n");
+ (void) waddstr(helpwin, "puzzle; also inform you when you run out\n");
+ (void) waddstr(helpwin, "of legal moves.\n\n");
+
+ (void) mvwaddstr(helpwin, NOTIFYY - INSTRY, 0,
+ "Press `?' to go to keystroke help.");
}
-static void help2(void)
+static void
+help2(void)
/* keystroke help screen */
{
- (void)waddstr(helpwin, "Possible moves are shown with `-'.\n\n");
-
- (void)waddstr(helpwin, "You can move around with the arrow keys or\n");
- (void)waddstr(helpwin, "with the rogue/hack movement keys. Other\n");
- (void)waddstr(helpwin, "commands allow you to undo moves or redraw.\n");
- (void)waddstr(helpwin, "Your mouse may work; try left-button to\n");
- (void)waddstr(helpwin, "move to the square under the pointer.\n\n");
-
- (void)waddstr(helpwin, "x,q -- exit y k u 7 8 9\n");
- (void)waddstr(helpwin, "r -- redraw screen \\|/ \\|/ \n");
- (void)waddstr(helpwin, "u -- undo move h-+-l 4-+-6\n");
- (void)waddstr(helpwin, " /|\\ /|\\ \n");
- (void)waddstr(helpwin, " b j n 1 2 3\n");
-
- (void)waddstr(helpwin,"\nYou can place your knight on the selected\n");
- (void)waddstr(helpwin, "square with spacebar, Enter, or the keypad\n");
- (void)waddstr(helpwin, "center key. You can quit with `x' or `q'.\n");
-
- (void)mvwaddstr(helpwin, NOTIFYY-INSTRY, 0,
- "Press `?' to go to game explanation");
+ (void) waddstr(helpwin, "Possible moves are shown with `-'.\n\n");
+
+ (void) waddstr(helpwin, "You can move around with the arrow keys or\n");
+ (void) waddstr(helpwin, "with the rogue/hack movement keys. Other\n");
+ (void) waddstr(helpwin, "commands allow you to undo moves or redraw.\n");
+ (void) waddstr(helpwin, "Your mouse may work; try left-button to\n");
+ (void) waddstr(helpwin, "move to the square under the pointer.\n\n");
+
+ (void) waddstr(helpwin, "x,q -- exit y k u 7 8 9\n");
+ (void) waddstr(helpwin, "r -- redraw screen \\|/ \\|/ \n");
+ (void) waddstr(helpwin, "bksp -- undo move h-+-l 4-+-6\n");
+ (void) waddstr(helpwin, " /|\\ /|\\ \n");
+ (void) waddstr(helpwin, " b j n 1 2 3\n");
+
+ (void) waddstr(helpwin, "\nYou can place your knight on the selected\n");
+ (void) waddstr(helpwin, "square with spacebar, Enter, or the keypad\n");
+ (void) waddstr(helpwin, "center key. You can quit with `x' or `q'.\n");
+
+ (void) mvwaddstr(helpwin, NOTIFYY - INSTRY, 0,
+ "Press `?' to go to game explanation");
}
-static void play (void)
+static void
+play(void)
/* play the game */
{
- bool keyhelp; /* TRUE if keystroke help is up */
- int c, ny = 0, nx = 0;
+ bool keyhelp; /* TRUE if keystroke help is up */
+ int c, ny = 0, nx = 0;
int i, j, count;
do {
- /* clear screen and draw board */
- werase(boardwin);
- werase(helpwin);
- werase(msgwin);
- dosquares();
- help1();
- wnoutrefresh(stdscr);
- wnoutrefresh(helpwin);
- wnoutrefresh(msgwin);
- wnoutrefresh(boardwin);
- doupdate();
-
- for (i = 0; i < BDEPTH; i++)
- for (j = 0; j < BWIDTH; j++)
- {
- board[i][j] = FALSE;
- cellmove(i, j);
- waddch(boardwin, minus);
- }
- memset(history, '\0', sizeof(history));
- history[0].y = history[0].x = -1;
- lastrow = lastcol = -2;
- movecount = 1;
- keyhelp = FALSE;
-
- for (;;)
- {
- if (rw != lastrow || col != lastcol)
- {
- if (lastrow >= 0 && lastcol >= 0)
- {
- cellmove(lastrow, lastcol);
- if (board[lastrow][lastcol])
- waddch(boardwin, trail);
- else
- waddch(boardwin, oldch);
- }
-
- cellmove(rw, col);
- oldch = winch(boardwin);
-
- lastrow = rw;
- lastcol= col;
- }
- cellmove(rw, col);
- waddch(boardwin, plus);
- cellmove(rw, col);
-
- wrefresh(msgwin);
-
- c = wgetch(boardwin);
-
- werase(msgwin);
-
- switch (c)
- {
- case 'k': case '8':
- case KEY_UP:
- ny = rw+BDEPTH-1; nx = col;
- break;
- case 'j': case '2':
- case KEY_DOWN:
- ny = rw+1; nx = col;
- break;
- case 'h': case '4':
- case KEY_LEFT:
- ny = rw; nx = col+BWIDTH-1;
- break;
- case 'l': case '6':
- case KEY_RIGHT:
- ny = rw; nx = col+1;
- break;
- case 'y': case '7':
- case KEY_A1:
- ny = rw+BDEPTH-1; nx = col+BWIDTH-1;
- break;
- case 'b': case '1':
- case KEY_C1:
- ny = rw+1; nx = col+BWIDTH-1;
- break;
- case 'u': case '9':
- case KEY_A3:
- ny = rw+BDEPTH-1; nx = col+1;
- break;
- case 'n': case '3':
- case KEY_C3:
- ny = rw+1; nx = col+1;
- break;
+ /* clear screen and draw board */
+ werase(boardwin);
+ werase(helpwin);
+ werase(msgwin);
+ dosquares();
+ help1();
+ wnoutrefresh(stdscr);
+ wnoutrefresh(helpwin);
+ wnoutrefresh(msgwin);
+ wnoutrefresh(boardwin);
+ doupdate();
+
+ for (i = 0; i < BDEPTH; i++)
+ for (j = 0; j < BWIDTH; j++) {
+ board[i][j] = FALSE;
+ cellmove(i, j);
+ waddch(boardwin, minus);
+ }
+ memset(history, '\0', sizeof(history));
+ history[0].y = history[0].x = -1;
+ lastrow = lastcol = -2;
+ movecount = 1;
+ keyhelp = FALSE;
+
+ for (;;) {
+ if (rw != lastrow || col != lastcol) {
+ if (lastrow >= 0 && lastcol >= 0) {
+ cellmove(lastrow, lastcol);
+ if (board[lastrow][lastcol])
+ waddch(boardwin, trail);
+ else
+ waddch(boardwin, oldch);
+ }
+
+ cellmove(rw, col);
+ oldch = winch(boardwin);
+
+ lastrow = rw;
+ lastcol = col;
+ }
+ cellmove(rw, col);
+ waddch(boardwin, plus);
+ cellmove(rw, col);
+
+ wrefresh(msgwin);
+
+ c = wgetch(boardwin);
+
+ werase(msgwin);
+
+ switch (c) {
+ case 'k':
+ case '8':
+ case KEY_UP:
+ ny = rw + BDEPTH - 1;
+ nx = col;
+ break;
+ case 'j':
+ case '2':
+ case KEY_DOWN:
+ ny = rw + 1;
+ nx = col;
+ break;
+ case 'h':
+ case '4':
+ case KEY_LEFT:
+ ny = rw;
+ nx = col + BWIDTH - 1;
+ break;
+ case 'l':
+ case '6':
+ case KEY_RIGHT:
+ ny = rw;
+ nx = col + 1;
+ break;
+ case 'y':
+ case '7':
+ case KEY_A1:
+ ny = rw + BDEPTH - 1;
+ nx = col + BWIDTH - 1;
+ break;
+ case 'b':
+ case '1':
+ case KEY_C1:
+ ny = rw + 1;
+ nx = col + BWIDTH - 1;
+ break;
+ case 'u':
+ case '9':
+ case KEY_A3:
+ ny = rw + BDEPTH - 1;
+ nx = col + 1;
+ break;
+ case 'n':
+ case '3':
+ case KEY_C3:
+ ny = rw + 1;
+ nx = col + 1;
+ break;
#ifdef NCURSES_MOUSE_VERSION
- case KEY_MOUSE:
- {
- MEVENT myevent;
-
- getmouse(&myevent);
- if (myevent.y >= CY(0) && myevent.y <= CY(BDEPTH)
- && myevent.x >= CX(0) && myevent.x <= CX(BWIDTH))
- {
- nx = CXINV(myevent.x);
- ny = CYINV(myevent.y);
- ungetch('\n');
- break;
- }
- else
- {
- beep();
- continue;
- }
- }
+ case KEY_MOUSE:
+ {
+ MEVENT myevent;
+
+ getmouse(&myevent);
+ if (myevent.y >= CY(0) && myevent.y <= CY(BDEPTH)
+ && myevent.x >= CX(0) && myevent.x <= CX(BWIDTH)) {
+ nx = CXINV(myevent.x);
+ ny = CYINV(myevent.y);
+ ungetch('\n');
+ break;
+ } else {
+ beep();
+ continue;
+ }
+ }
#endif /* NCURSES_MOUSE_VERSION */
- case KEY_B2:
- case '\n':
- case ' ':
- if (evalmove(rw, col))
- {
- drawmove(trail,
- history[movecount-1].y, history[movecount-1].x,
- rw, col);
- history[movecount].y = rw;
- history[movecount].x = col;
- movecount++;
-
- if (!chkmoves())
- goto dropout;
- }
- else
- beep();
- break;
-
- case KEY_REDO:
- case '\f':
- case 'r':
- clearok(curscr, TRUE);
- wnoutrefresh(stdscr);
- wnoutrefresh(boardwin);
- wnoutrefresh(msgwin);
- wnoutrefresh(helpwin);
- doupdate();
- break;
-
- case KEY_UNDO:
- case KEY_BACKSPACE:
- case '\b':
- if (movecount == 1)
- {
- ny = lastrow;
- nx = lastcol;
- waddstr(msgwin, "\nNo previous move.");
- beep();
- }
- else
- {
- int oldy = history[movecount-1].y;
- int oldx = history[movecount-1].x;
-
- board[oldy][oldx] = FALSE;
- --movecount;
- ny = history[movecount-1].y;
- nx = history[movecount-1].x;
- drawmove(' ', oldy, oldx, ny, nx);
-
- /* avoid problems if we just changed the current cell */
- cellmove(lastrow, lastcol);
- oldch = winch(boardwin);
- }
- break;
-
- case 'q':
- case 'x':
- goto dropout;
-
- case '?':
- werase(helpwin);
- if (keyhelp)
- {
- help1();
- keyhelp = FALSE;
- }
- else
- {
- help2();
- keyhelp = TRUE;
- }
- wrefresh(helpwin);
- break;
-
- default:
- beep();
- break;
- }
-
- col = nx % BWIDTH;
- rw = ny % BDEPTH;
- }
-
- dropout:
- count = 0;
- for (i = 0; i < BDEPTH; i++)
- for (j = 0; j < BWIDTH; j++)
- if (board[i][j] != 0)
- count += 1;
- if (count == (BWIDTH * BDEPTH))
- wprintw(msgwin, "\nYou won. Care to try again? ");
- else
- wprintw(msgwin, "\n%d squares filled. Try again? ", count);
- } while
- (tolower(wgetch(msgwin)) == 'y');
+ case KEY_B2:
+ case '\n':
+ case ' ':
+ if (evalmove(rw, col)) {
+ drawmove(trail,
+ history[movecount - 1].y,
+ history[movecount - 1].x,
+ rw, col);
+ history[movecount].y = rw;
+ history[movecount].x = col;
+ movecount++;
+
+ if (!chkmoves())
+ goto dropout;
+ } else
+ beep();
+ break;
+
+ case KEY_REDO:
+ case '\f':
+ case 'r':
+ clearok(curscr, TRUE);
+ wnoutrefresh(stdscr);
+ wnoutrefresh(boardwin);
+ wnoutrefresh(msgwin);
+ wnoutrefresh(helpwin);
+ doupdate();
+ break;
+
+ case KEY_UNDO:
+ case KEY_BACKSPACE:
+ case '\b':
+ if (movecount == 1) {
+ ny = lastrow;
+ nx = lastcol;
+ waddstr(msgwin, "\nNo previous move.");
+ beep();
+ } else {
+ int oldy = history[movecount - 1].y;
+ int oldx = history[movecount - 1].x;
+
+ board[oldy][oldx] = FALSE;
+ --movecount;
+ ny = history[movecount - 1].y;
+ nx = history[movecount - 1].x;
+ drawmove(' ', oldy, oldx, ny, nx);
+
+ /* avoid problems if we just changed the current cell */
+ cellmove(lastrow, lastcol);
+ oldch = winch(boardwin);
+ }
+ break;
+
+ case 'q':
+ case 'x':
+ goto dropout;
+
+ case '?':
+ werase(helpwin);
+ if (keyhelp) {
+ help1();
+ keyhelp = FALSE;
+ } else {
+ help2();
+ keyhelp = TRUE;
+ }
+ wrefresh(helpwin);
+ break;
+
+ default:
+ beep();
+ break;
+ }
+
+ col = nx % BWIDTH;
+ rw = ny % BDEPTH;
+ }
+
+ dropout:
+ count = 0;
+ for (i = 0; i < BDEPTH; i++)
+ for (j = 0; j < BWIDTH; j++)
+ if (board[i][j] != 0)
+ count += 1;
+ if (count == (BWIDTH * BDEPTH))
+ wprintw(msgwin, "\nYou won. Care to try again? ");
+ else
+ wprintw(msgwin, "\n%d squares filled. Try again? ", count);
+ } while
+ (tolower(wgetch(msgwin)) == 'y');
}
-static void dosquares (void)
+static void
+dosquares(void)
{
int i, j;
mvaddstr(0, 20, "KNIGHT'S MOVE -- a logical solitaire");
- move(BOARDY,BOARDX);
+ move(BOARDY, BOARDX);
waddch(boardwin, ACS_ULCORNER);
- for (j = 0; j < 7; j++)
- {
+ for (j = 0; j < 7; j++) {
waddch(boardwin, ACS_HLINE);
waddch(boardwin, ACS_HLINE);
waddch(boardwin, ACS_HLINE);
waddch(boardwin, ACS_HLINE);
waddch(boardwin, ACS_URCORNER);
- for (i = 1; i < BDEPTH; i++)
- {
+ for (i = 1; i < BDEPTH; i++) {
move(BOARDY + i * 2 - 1, BOARDX);
- waddch(boardwin, ACS_VLINE);
- for (j = 0; j < BWIDTH; j++)
- {
+ waddch(boardwin, ACS_VLINE);
+ for (j = 0; j < BWIDTH; j++) {
waddch(boardwin, ' ');
waddch(boardwin, ' ');
waddch(boardwin, ' ');
waddch(boardwin, ACS_VLINE);
}
move(BOARDY + i * 2, BOARDX);
- waddch(boardwin, ACS_LTEE);
- for (j = 0; j < BWIDTH - 1; j++)
- {
+ waddch(boardwin, ACS_LTEE);
+ for (j = 0; j < BWIDTH - 1; j++) {
waddch(boardwin, ACS_HLINE);
waddch(boardwin, ACS_HLINE);
waddch(boardwin, ACS_HLINE);
move(BOARDY + i * 2 - 1, BOARDX);
waddch(boardwin, ACS_VLINE);
- for (j = 0; j < BWIDTH; j++)
- {
+ for (j = 0; j < BWIDTH; j++) {
waddch(boardwin, ' ');
waddch(boardwin, ' ');
waddch(boardwin, ' ');
move(BOARDY + i * 2, BOARDX);
waddch(boardwin, ACS_LLCORNER);
- for (j = 0; j < BWIDTH - 1; j++)
- {
+ for (j = 0; j < BWIDTH - 1; j++) {
waddch(boardwin, ACS_HLINE);
waddch(boardwin, ACS_HLINE);
waddch(boardwin, ACS_HLINE);
waddch(boardwin, ACS_LRCORNER);
}
-static void mark_possibles(int prow, int pcol, chtype mark)
+static void
+mark_possibles(int prow, int pcol, chtype mark)
{
- if (chksqr(prow+2,pcol+1)){cellmove(prow+2,pcol+1);waddch(boardwin,mark);};
- if (chksqr(prow+2,pcol-1)){cellmove(prow+2,pcol-1);waddch(boardwin,mark);};
- if (chksqr(prow-2,pcol+1)){cellmove(prow-2,pcol+1);waddch(boardwin,mark);};
- if (chksqr(prow-2,pcol-1)){cellmove(prow-2,pcol-1);waddch(boardwin,mark);};
- if (chksqr(prow+1,pcol+2)){cellmove(prow+1,pcol+2);waddch(boardwin,mark);};
- if (chksqr(prow+1,pcol-2)){cellmove(prow+1,pcol-2);waddch(boardwin,mark);};
- if (chksqr(prow-1,pcol+2)){cellmove(prow-1,pcol+2);waddch(boardwin,mark);};
- if (chksqr(prow-1,pcol-2)){cellmove(prow-1,pcol-2);waddch(boardwin,mark);};
+ if (chksqr(prow + 2, pcol + 1)) {
+ cellmove(prow + 2, pcol + 1);
+ waddch(boardwin, mark);
+ };
+ if (chksqr(prow + 2, pcol - 1)) {
+ cellmove(prow + 2, pcol - 1);
+ waddch(boardwin, mark);
+ };
+ if (chksqr(prow - 2, pcol + 1)) {
+ cellmove(prow - 2, pcol + 1);
+ waddch(boardwin, mark);
+ };
+ if (chksqr(prow - 2, pcol - 1)) {
+ cellmove(prow - 2, pcol - 1);
+ waddch(boardwin, mark);
+ };
+ if (chksqr(prow + 1, pcol + 2)) {
+ cellmove(prow + 1, pcol + 2);
+ waddch(boardwin, mark);
+ };
+ if (chksqr(prow + 1, pcol - 2)) {
+ cellmove(prow + 1, pcol - 2);
+ waddch(boardwin, mark);
+ };
+ if (chksqr(prow - 1, pcol + 2)) {
+ cellmove(prow - 1, pcol + 2);
+ waddch(boardwin, mark);
+ };
+ if (chksqr(prow - 1, pcol - 2)) {
+ cellmove(prow - 1, pcol - 2);
+ waddch(boardwin, mark);
+ };
}
-static void drawmove(char tchar, int oldy, int oldx, int row, int column)
+static void
+drawmove(char tchar, int oldy, int oldx, int row, int column)
/* place the stars, update board & currents */
{
- if (movecount <= 1)
- {
+ if (movecount <= 1) {
int i, j;
for (i = 0; i < BDEPTH; i++)
- for (j = 0; j < BWIDTH; j++)
- {
+ for (j = 0; j < BWIDTH; j++) {
cellmove(i, j);
if (winch(boardwin) == minus)
waddch(boardwin, movecount ? ' ' : minus);
}
- }
- else
- {
+ } else {
cellmove(oldy, oldx);
waddch(boardwin, '\b');
waddch(boardwin, tchar);
mark_possibles(oldy, oldx, ' ');
}
- if (row != -1 && column != -1)
- {
+ if (row != -1 && column != -1) {
cellmove(row, column);
waddch(boardwin, '\b');
waddch(boardwin, trail);
wprintw(msgwin, "\nMove %d", movecount);
}
-static bool evalmove(int row, int column)
+static bool
+evalmove(int row, int column)
/* evaluate move */
{
if (movecount == 1)
- return(TRUE);
- else if (board[row][column] == TRUE)
- {
+ return (TRUE);
+ else if (board[row][column] == TRUE) {
waddstr(msgwin, "\nYou've already been there.");
- return(FALSE);
- }
- else
- {
- int rdif = iabs(row - history[movecount-1].y);
- int cdif = iabs(column - history[movecount-1].x);
+ return (FALSE);
+ } else {
+ int rdif = iabs(row - history[movecount - 1].y);
+ int cdif = iabs(column - history[movecount - 1].x);
- if (!((rdif == 1) && (cdif == 2)) && !((rdif == 2) && (cdif == 1)))
- {
+ if (!((rdif == 1) && (cdif == 2)) && !((rdif == 2) && (cdif == 1))) {
waddstr(msgwin, "\nThat's not a legal knight's move.");
- return(FALSE);
+ return (FALSE);
}
}
- return(TRUE);
+ return (TRUE);
}
-static bool chkmoves (void)
+static bool
+chkmoves(void)
/* check to see if valid moves are available */
{
- if (chksqr(rw+2,col+1)) return(TRUE);
- if (chksqr(rw+2,col-1)) return(TRUE);
- if (chksqr(rw-2,col+1)) return(TRUE);
- if (chksqr(rw-2,col-1)) return(TRUE);
- if (chksqr(rw+1,col+2)) return(TRUE);
- if (chksqr(rw+1,col-2)) return(TRUE);
- if (chksqr(rw-1,col+2)) return(TRUE);
- if (chksqr(rw-1,col-2)) return(TRUE);
+ if (chksqr(rw + 2, col + 1))
+ return (TRUE);
+ if (chksqr(rw + 2, col - 1))
+ return (TRUE);
+ if (chksqr(rw - 2, col + 1))
+ return (TRUE);
+ if (chksqr(rw - 2, col - 1))
+ return (TRUE);
+ if (chksqr(rw + 1, col + 2))
+ return (TRUE);
+ if (chksqr(rw + 1, col - 2))
+ return (TRUE);
+ if (chksqr(rw - 1, col + 2))
+ return (TRUE);
+ if (chksqr(rw - 1, col - 2))
+ return (TRUE);
return (FALSE);
}
-static int iabs(int num)
+static int
+iabs(int num)
{
- if (num < 0) return (-num);
- else return (num);
+ if (num < 0)
+ return (-num);
+ else
+ return (num);
}
-static bool chksqr (int r1, int c1)
+static bool
+chksqr(int r1, int c1)
{
if ((r1 < 0) || (r1 > BDEPTH - 1))
- return(FALSE);
+ return (FALSE);
if ((c1 < 0) || (c1 > BWIDTH - 1))
- return(FALSE);
+ return (FALSE);
return ((!board[r1][c1]) ? TRUE : FALSE);
}
projects / ncurses.git / blobdiff