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/**************************************************************************** * Copyright (c) 1998-2010,2012 Free Software Foundation, Inc. * * * * Permission is hereby granted, free of charge, to any person obtaining a * * copy of this software and associated documentation files (the * * "Software"), to deal in the Software without restriction, including * * without limitation the rights to use, copy, modify, merge, publish, * * distribute, distribute with modifications, sublicense, and/or sell * * copies of the Software, and to permit persons to whom the Software is * * furnished to do so, subject to the following conditions: * * * * The above copyright notice and this permission notice shall be included * * in all copies or substantial portions of the Software. * * * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * * * * Except as contained in this notice, the name(s) of the above copyright * * holders shall not be used in advertising or otherwise to promote the * * sale, use or other dealings in this Software without prior written * * authorization. * ****************************************************************************/ /* * Name: Towers of Hanoi. * * Desc: * This is a playable copy of towers of hanoi. * Its sole purpose is to demonstrate my Amiga Curses package. * This program should compile on any system that has Curses. * 'hanoi' will give a manual game with 7 playing pieces. * 'hanoi n' will give a manual game with n playing pieces. * 'hanoi n a' will give an auto solved game with n playing pieces. * * Author: Simon J Raybould (sie@fulcrum.bt.co.uk). * (This version has been slightly modified by the ncurses maintainers.) * * Date: 05.Nov.90 * * $Id: hanoi.c,v 1.34 2012/12/08 16:41:56 tom Exp $ */ #include <test.priv.h> #include <math.h> #define NPEGS 3 /* This is not configurable !! */ #define MINTILES 3 #define MAXTILES 9 #define DEFAULTTILES 7 #define TOPLINE 6 #define BASELINE 16 #define STATUSLINE (LINES-3) #define LEFTPEG 19 #define MIDPEG 39 #define RIGHTPEG 59 #define LENTOIND(x) (((int)(x)-1)/2) #define OTHER(a,b) (3-((a)+(b))) struct Peg { size_t Length[MAXTILES]; int Count; }; static struct Peg Pegs[NPEGS]; static int PegPos[] = { LEFTPEG, MIDPEG, RIGHTPEG }; static short TileColour[] = { COLOR_GREEN, /* Length 3 */ COLOR_MAGENTA, /* Length 5 */ COLOR_RED, /* Length 7 */ COLOR_BLUE, /* Length 9 */ COLOR_CYAN, /* Length 11 */ COLOR_YELLOW, /* Length 13 */ COLOR_GREEN, /* Length 15 */ COLOR_MAGENTA, /* Length 17 */ COLOR_RED, /* Length 19 */ }; static int NTiles = 0; static int NMoves = 0; static bool AutoFlag = FALSE; static void InitTiles(void); static void DisplayTiles(void); static void MakeMove(int From, int To); static void AutoMove(int From, int To, int Num); static void Usage(void); static int Solved(int NumTiles); static int GetMove(int *From, int *To); static int InvalidMove(int From, int To); int main(int argc, char **argv) { int FromCol, ToCol; setlocale(LC_ALL, ""); switch (argc) { case 1: NTiles = DEFAULTTILES; break; case 2: NTiles = atoi(argv[1]); if (NTiles > MAXTILES || NTiles < MINTILES) { fprintf(stderr, "Range %d to %d\n", MINTILES, MAXTILES); ExitProgram(EXIT_FAILURE); } break; case 3: if (strcmp(argv[2], "a")) { Usage(); ExitProgram(EXIT_FAILURE); } NTiles = atoi(argv[1]); if (NTiles > MAXTILES || NTiles < MINTILES) { fprintf(stderr, "Range %d to %d\n", MINTILES, MAXTILES); ExitProgram(EXIT_FAILURE); } AutoFlag = TRUE; break; default: Usage(); ExitProgram(EXIT_FAILURE); } initscr(); if (has_colors()) { int i; short bg = COLOR_BLACK; start_color(); #if HAVE_USE_DEFAULT_COLORS if (use_default_colors() == OK) bg = -1; #endif for (i = 0; i < 9; i++) init_pair((short) (i + 1), bg, TileColour[i]); } cbreak(); if (LINES < 24) { endwin(); fprintf(stderr, "Min screen length 24 lines\n"); ExitProgram(EXIT_FAILURE); } if (AutoFlag) { curs_set(0); leaveok(stdscr, TRUE); /* Attempt to remove cursor */ } InitTiles(); DisplayTiles(); if (AutoFlag) { do { noecho(); AutoMove(0, 2, NTiles); } while (!Solved(NTiles)); sleep(2); } else { echo(); for (;;) { if (GetMove(&FromCol, &ToCol)) break; if (InvalidMove(FromCol, ToCol)) { MvAddStr(STATUSLINE, 0, "Invalid Move !!"); refresh(); beep(); continue; } MakeMove(FromCol, ToCol); if (Solved(NTiles)) { MvPrintw(STATUSLINE, 0, "Well Done !! You did it in %d moves", NMoves); refresh(); sleep(5); break; } } } endwin(); ExitProgram(EXIT_SUCCESS); } static int InvalidMove(int From, int To) { if (From >= NPEGS) return TRUE; if (From < 0) return TRUE; if (To >= NPEGS) return TRUE; if (To < 0) return TRUE; if (From == To) return TRUE; if (!Pegs[From].Count) return TRUE; if (Pegs[To].Count && Pegs[From].Length[Pegs[From].Count - 1] > Pegs[To].Length[Pegs[To].Count - 1]) return TRUE; return FALSE; } static void InitTiles(void) { int Size, SlotNo; for (Size = NTiles * 2 + 1, SlotNo = 0; Size >= 3; Size -= 2) Pegs[0].Length[SlotNo++] = (size_t) Size; Pegs[0].Count = NTiles; Pegs[1].Count = 0; Pegs[2].Count = 0; } static void DisplayTiles(void) { int Line, peg, SlotNo; char TileBuf[BUFSIZ]; erase(); MvAddStr(1, 24, "T O W E R S O F H A N O I"); MvAddStr(3, 34, "SJR 1990"); MvPrintw(19, 5, "Moves : %d of %.0f", NMoves, pow(2.0, NTiles) - 1); (void) attrset(A_REVERSE); MvAddStr(BASELINE, 8, " "); for (Line = TOPLINE; Line < BASELINE; Line++) { MvAddCh(Line, LEFTPEG, ' '); MvAddCh(Line, MIDPEG, ' '); MvAddCh(Line, RIGHTPEG, ' '); } MvAddCh(BASELINE, LEFTPEG, '1'); MvAddCh(BASELINE, MIDPEG, '2'); MvAddCh(BASELINE, RIGHTPEG, '3'); (void) attrset(A_NORMAL); /* Draw tiles */ for (peg = 0; peg < NPEGS; peg++) { for (SlotNo = 0; SlotNo < Pegs[peg].Count; SlotNo++) { size_t len = Pegs[peg].Length[SlotNo]; if (len < sizeof(TileBuf) - 1 && len < (size_t) PegPos[peg]) { memset(TileBuf, ' ', len); TileBuf[len] = '\0'; if (has_colors()) (void) attrset((attr_t) COLOR_PAIR(LENTOIND(len))); else (void) attrset(A_REVERSE); MvAddStr(BASELINE - (SlotNo + 1), (PegPos[peg] - (int) len / 2), TileBuf); } } } (void) attrset(A_NORMAL); refresh(); } static int GetMove(int *From, int *To) { MvAddStr(STATUSLINE, 0, "Next move ('q' to quit) from "); clrtoeol(); refresh(); if ((*From = getch()) == 'q') return TRUE; *From -= ('0' + 1); addstr(" to "); clrtoeol(); refresh(); if ((*To = getch()) == 'q') return TRUE; *To -= ('0' + 1); refresh(); if (!AutoFlag) napms(500); move(STATUSLINE, 0); clrtoeol(); refresh(); return FALSE; } static void MakeMove(int From, int To) { Pegs[From].Count--; Pegs[To].Length[Pegs[To].Count] = Pegs[From].Length[Pegs[From].Count]; Pegs[To].Count++; NMoves++; DisplayTiles(); } static void AutoMove(int From, int To, int Num) { if (Num == 1) { MakeMove(From, To); napms(500); } else { AutoMove(From, OTHER(From, To), Num - 1); MakeMove(From, To); napms(500); AutoMove(OTHER(From, To), To, Num - 1); } } static int Solved(int NumTiles) { int i; for (i = 1; i < NPEGS; i++) if (Pegs[i].Count == NumTiles) return TRUE; return FALSE; } static void Usage(void) { fprintf(stderr, "Usage: hanoi [<No Of Tiles>] [a]\n"); fprintf(stderr, "The 'a' option causes the tower to be solved automatically\n"); }
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