Text placement problem for ASCII RPG (simple question)
Author
I'm looking to make a very very simple top view ASCII text RPG. It's a console game but I can't figure out how to place the text where I want to. I need a command similar to the Qbasic LOCATION command.
Ex: I need to place the player on the screen and be able to manipulate that without having to redraw the whole screen.(I know I can use a simple "blank" mask to do so during movement).
I know how to do this in SDL but I want this program simple and not include any outside graphics.
Any help would be great!
Thanks.
SwindIer,
I'm not sure of your compiler/ environment, so this maybe completely useless to you (hopefully not). Anyway you might want to look into the library curses.
I'd google for it, but to get you started try:
http://pdcurses.sourceforge.net/
http://heather.cs.ucdavis.edu/~matloff/UnixAndC/CLanguage/Curses.pdf
http://www.unet.univie.ac.at/aix/aixprggd/genprogc/curses.htm
Cheers,
Tom
I'm not sure of your compiler/ environment, so this maybe completely useless to you (hopefully not). Anyway you might want to look into the library curses.
I'd google for it, but to get you started try:
http://pdcurses.sourceforge.net/
http://heather.cs.ucdavis.edu/~matloff/UnixAndC/CLanguage/Curses.pdf
http://www.unet.univie.ac.at/aix/aixprggd/genprogc/curses.htm
Cheers,
Tom
Author
Ok, I tried using Cursers. I'm currently running Slackware Linux 10.0. I downloaded the packages for cursers from sourceforge but I'm having some problems with the install. After running the configuration shell script I get this error:
"checking for location of X headers... configure: error: Cannot find required header file Intrinsic.h; XCursers cannot be configured."
I know you can specify the headers path by using the --x-include=/directoryOfHeaders but I've tried a bunch of directories and still no luck.
:-
Any help?
"checking for location of X headers... configure: error: Cannot find required header file Intrinsic.h; XCursers cannot be configured."
I know you can specify the headers path by using the --x-include=/directoryOfHeaders but I've tried a bunch of directories and still no luck.
:-
Any help?
Try looking up C or C++ I/O on CPPReference.com... I'm not sure if they have the functions you are looking for though.
Its a bit ugly, but it works. On Dos/windows this requires conio2.h and lib, (google it), on Linux it just works.
#ifndef __LCONSOLE_H#define __LCONSOLE_H#include <string.h>#include <stdio.h>#ifdef LINUX #include <termios.h> #include <unistd.h> #ifndef STDIN_FILENO #define STDIN_FILENO 0 #endif#endif#ifdef DOS #include <conio2.h>#endif// triggers a code in Linux#define ESC 27// triggers a code in DOS.#define DOSARROW 224#define DOSZERO 0#define ENTER 10// These mimic// /usr/include/X11/keysymdef.h// but I dont want to require that .h#define LC_KEY_UP 0xFF97#define LC_KEY_DOWN 0xFF99#define LC_KEY_LEFT 0xFF96#define LC_KEY_RIGHT 0xFF98#define LC_KEY_HOME 0xFF95#define LC_KEY_END 0xFF9C#define LC_KEY_INSERT 0xFF9E#define LC_KEY_DELETE 0xFF9F#define LC_KEY_PAGEUP 0xFF9A#define LC_KEY_PAGEDOWN 0xFF9B#define CODE_LEN 5typedef struct { unsigned int one_code; unsigned char long_codes[CODE_LEN]; } key_code;#ifdef LINUX#define POS_CODES 11const key_code KEY_CODES[POS_CODES] = { {ESC, { ESC, 0, 0, 0, 0 } }, {LC_KEY_UP, { ESC, 91, 65, 0, 0 } }, {LC_KEY_DOWN, { ESC, 91, 66, 0, 0 } }, {LC_KEY_LEFT, { ESC, 91, 68, 0, 0 } }, {LC_KEY_RIGHT, { ESC, 91, 67, 0, 0 } }, {LC_KEY_HOME, { ESC, 91, 49, 126, 0 } }, {LC_KEY_INSERT, { ESC, 91, 50, 126, 0 } }, {LC_KEY_DELETE, { ESC, 91, 51, 126, 0 } }, {LC_KEY_END, { ESC, 91, 52, 126, 0 } }, {LC_KEY_PAGEUP, { ESC, 91, 53, 126, 0 } }, {LC_KEY_PAGEDOWN, { ESC, 91, 54, 126, 0 } }};#endif#ifdef DOS#define POS_CODES 21const key_code KEY_CODES[POS_CODES] = { {ESC, { ESC, 0, 0, 0, 0 } }, {LC_KEY_UP, { DOSARROW, 72, 0, 0, 0 } }, // between keys {LC_KEY_DOWN, { DOSARROW, 80, 0, 0, 0 } }, {LC_KEY_LEFT, { DOSARROW, 75, 0, 0, 0 } }, {LC_KEY_RIGHT, { DOSARROW, 77, 0, 0, 0 } }, {LC_KEY_HOME, { DOSARROW, 71, 0, 0, 0 } }, {LC_KEY_INSERT, { DOSARROW, 82, 0, 0, 0 } }, {LC_KEY_DELETE, { DOSARROW, 83, 0, 0, 0 } }, {LC_KEY_END, { DOSARROW, 79, 0, 0, 0 } }, {LC_KEY_PAGEUP, { DOSARROW, 73, 0, 0, 0 } }, {LC_KEY_PAGEDOWN, { DOSARROW, 81, 0, 0, 0 } }, {LC_KEY_UP, { DOSZERO, 72, 0, 0, 0 } }, // The keypad keys {LC_KEY_DOWN, { DOSZERO, 80, 0, 0, 0 } }, {LC_KEY_LEFT, { DOSZERO, 75, 0, 0, 0 } }, {LC_KEY_RIGHT, { DOSZERO, 77, 0, 0, 0 } }, {LC_KEY_HOME, { DOSZERO, 71, 0, 0, 0 } }, {LC_KEY_INSERT, { DOSZERO, 82, 0, 0, 0 } }, {LC_KEY_DELETE, { DOSZERO, 83, 0, 0, 0 } }, {LC_KEY_END, { DOSZERO, 79, 0, 0, 0 } }, {LC_KEY_PAGEUP, { DOSZERO, 73, 0, 0, 0 } }, {LC_KEY_PAGEDOWN, { DOSZERO, 81, 0, 0, 0 } } };#endif // Some buttons result in multiple buttons. // To get them all you have to do another kbhit(), readch() pair. // UP ARROW = 27, 91, 65 // DOWN ARROW = 27, 91, 66 // RIGHT ARROW = 27, 91, 67 // LEFT ARROW = 27, 91, 68 // ESC = 27 // INSERT = 27, 91, 50, 126 // DELETE = 27, 91, 51, 126const char CURSOR_COLORS_TEXT[][5] = {"0;30", "0;34", "0;32", "0;36", "0;31", "0;35", "0;33", "0;37", "1;30", "1;34", "1;32", "1;36", "1;31", "1;35", "1;33", "1;37", "40", "44", "42", "46", "41", "45", "43", "47"};enum CURSOR_style_TYPE { LC_RESET = 0, LC_NORMAL = 0, LC_BRIGHT = 1, LC_DIM = 2, // dont work LC_UNDERLINE = 3, // wont LC_FOUR = 4, // real Underline?? LC_BLINK = 5, // Brights background also LC_SIX = 6, // Bright Background? LC_REVERSE = 7, LC_HIDDEN = 8, LC_NINE = 9, LC_TEN = 10};const int CURSOR_COLOR_LINUX_CODES[] = { 30, 34, 32, 36, 31, 35, 33, 37, 30, 34, 32, 36, 31, 35, 33, 37};enum CURSOR_COLOR_TYPE { LC_BLACK, LC_BLUE, LC_GREEN, LC_CYAN, LC_RED, LC_PURPLE, LC_BROWN, LC_LIGHT_GRAY, // named that have the same value, but make more sense when in Bright mode LC_DARK_GRAY, LC_LIGHT_BLUE, LC_LIGHT_GREEN, LC_LIGHT_CYAN, LC_LIGHT_RED, LC_LIGHT_PURPLE, LC_YELLOW, LC_WHITE};// These need to exist under both. But under DOS they will// define to empty.// Starts Keyboard nonblocking mode.void SetTTYRaw(bool HideEcho);// ends Keyboard nonblocking modevoid RestoreTTY();// returns 1 on true 0 on false.int IsKBHit();// returns the button hit.int ReadKeyboard();void SetCursorPos(size_t X, size_t Y);void ClearScreen();void ResetColor();void SetColors(CURSOR_style_TYPE style, CURSOR_COLOR_TYPE Fg, CURSOR_COLOR_TYPE Bg); #endif // end entire header#include "LConsole.h"#ifdef LINUX// Stores keyboard settingsstatic struct termios new_settings, initial_settings;static int peek_character = -1;#endifvoid SetTTYRaw(bool HideEcho){#ifdef LINUX tcgetattr(0,&initial_settings); new_settings = initial_settings; new_settings.c_lflag &= ~ICANON; if(HideEcho) new_settings.c_lflag &= ~ECHO; new_settings.c_lflag &= ~ISIG; new_settings.c_cc[VMIN] = 1; new_settings.c_cc[VTIME] = 0; tcsetattr(0, TCSANOW, &new_settings);#endif}void RestoreTTY(){#ifdef LINUX tcsetattr (STDIN_FILENO, TCSAFLUSH, &initial_settings);#endif}int search_key_codes(unsigned char start_ch){ int PosLoop, FullCodeIndex; unsigned char FullCodeStr[CODE_LEN+2] = "\0\0\0\0\0\0";//printf(" searching "); // read in the entire code str FullCodeStr[0] = start_ch; FullCodeIndex = 1;// printf("@%d ", FullCodeStr[0]); while(IsKBHit()) { FullCodeStr[FullCodeIndex] = ReadKeyboard();// printf("%u ", FullCodeStr[FullCodeIndex]); FullCodeIndex++; if(FullCodeIndex >= CODE_LEN) { printf((char*)FullCodeStr); return 0; } } FullCodeStr[FullCodeIndex] = '\0'; // FullCodeIndex is the length of the str, including the NULL.// printf(" *%u ", FullCodeIndex); for(PosLoop = 0; PosLoop < POS_CODES; PosLoop++) { if( strcmp((char*)KEY_CODES[PosLoop].long_codes, (char*)FullCodeStr) == 0) return KEY_CODES[PosLoop].one_code; } // end possible codes loop return 0;}int IsKBHit(){#ifdef LINUX unsigned char ch; int nread; if (peek_character != -1) return 1; new_settings.c_cc[VMIN]=0; tcsetattr(0, TCSANOW, &new_settings); nread = read(0,&ch,1); new_settings.c_cc[VMIN]=1; tcsetattr(0, TCSANOW, &new_settings); if(nread == 1) { //printf("!%d!", ch); if(ch == ESC) peek_character = search_key_codes(ch); else peek_character = ch; return 1; } return 0;#endif#ifdef DOS return kbhit();#endif }int ReadKeyboard(){#ifdef LINUX int ch; if(peek_character != -1) { ch = peek_character; peek_character = -1; return ch; } read(0,&ch,1); return ch;#endif#ifdef DOS int ch; ch = getch(); if(ch == DOSARROW || ch == DOSZERO) return search_key_codes(ch); else return ch;#endif}// http://www.linux.com/howtos/Bash-Prompt-HOWTO/x329.shtml// 0,0 is at Top Left.void SetCursorPos(size_t X, size_t Y){ #ifdef LINUX printf("\033[%d;%df", Y+1, X+1); // yes, that command wants Y,X // and +1 because this system actually counts from 1 // unlike everything else in all of computer-dom #endif #ifdef DOS gotoxy(X,Y); // dos conio function #endif}void ClearScreen(){ #ifdef LINUX printf("\033[2J"); #endif #ifdef DOS clrscr(); #endif}// Resets it to whatever the system wants it to be.void ResetColor(){ #ifdef LINUX printf("\033[0m"); #endif #ifdef DOS normvideo(); #endif}void SetColors(CURSOR_STYLE_TYPE Style, CURSOR_COLOR_TYPE Fg, CURSOR_COLOR_TYPE Bg){ #ifdef LINUX printf("\033[%d;%d;%dm", Style, CURSOR_COLOR_LINUX_CODES[Fg], CURSOR_COLOR_LINUX_CODES[Bg]+10); #endif #ifdef DOS if(Style == CT_NORMAL) lowvideo(); else if(Style == CT_BRIGHT) highvideo(); textbackground(Bg); textcolor(Fg); #endif}
Author
Ok, I tried using your code and add it to my project. When I went to compile I got these errors
I put the top code into it's header file "LConsole.h" and the bottom code into it's "brother" source file, "LConsole.cpp". Should I just redeclare the gobal constants again in LConsole.cpp?
--------------------Configuration: rpg - Linux Debug--------------------Compiling source file(s)...LConsole.cppLConsole.cpp: In function `int search_key_codes(unsigned char)':LConsole.cpp:61: error: `POS_CODES' undeclared (first use this function)LConsole.cpp:61: error: (Each undeclared identifier is reported only once foreach function it appears in.)LConsole.cpp:63: error: `KEY_CODES' undeclared (first use this function)LConsole.cpp: At global scope:LConsole.cpp:175: error: `CURSOR_style_TYPE' was not declared in this scopeLConsole.cpp:175: error: parse error before `,' tokenLConsole.cpp:192:2: warning: no newline at end of filerpg - 5 error(s), 1 warning(s)I put the top code into it's header file "LConsole.h" and the bottom code into it's "brother" source file, "LConsole.cpp". Should I just redeclare the gobal constants again in LConsole.cpp?
Before you include LConsole.h, or commandline as part of the g++ line, throw in a "#define LINUX" or "#define DOS"
it's likely that you alread have "ncurses" installed, especially if you did a full install. at least i know a full install of slack 10.1 has it. i've been told it's very easy to learn and use.
Author
Quote:
Before you include LConsole.h, or commandline as part of the g++ line, throw in a "#define LINUX" or "#define DOS"
I tried that, but I'm still getting errors saying that it can't see the global variables in the source file from the header file.
Any other ideas?
About the ncursers thing, I tried that too, it didn't really give me any errors when I included cursers.h but I ran into problems the second I tried using any of the commands found on that reference site listed in an earlier message.
Well, so much for this being the easy question I thought it would be. :P
-DLINUX (or -DDOS) in the g++ line that makes LConsole.cpp. That .cpp needs to seeyour define as well as your codes .cpp
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