There's a simple trick to printing on the same line: Don't print newlines, print carriage returns instead. That will return it to the beginning of the line, instead of moving to the next line, without resorting to things like ANSI escape sequences.
Of course you have to be careful to always overwrite everything that was printed last time, otherwise you'd get a countdown like 10,90,80,70,60,50,40,30,20,10 -- not what you wanted at all
And since you're not printing a newline, you either need to flush the output all the time, or print to the unbuffered-by-default stderr (or cerr) stream.
Code:
int n;
for(n=10; n>0; n--)
{
// %2d pads with spaces to two characters
fprintf(stderr, "\r%2d", n);
sleep(1);
}
---------- Post updated at 09:38 AM ---------- Previous update was at 09:29 AM ----------
Quote:
Originally Posted by bashuser2
Just a question in that though: Is there any C++(or even C) way of not calling this function all the time? (as the game will have many dialogues)Is there any way to tell the program that for everything printed in the program,you will use this function? A little bit difficult I think...
You could try overloading some functions in ostream for that, I suppose. I'm not sure you're given enough access to its internals to really affect the way the buffer is flushed, though. Theoretically these things are flexible like that. In practice...they're not.
I don't see what's so bad about calling a function. Are you really going to want to print everything like that, all the time? Or just dialogues? If you're thinking you want to avoid a million function calls like
print_dialogue("line1");
print_dialogue("line2");
print_dialogue("line3");
...
then it's time to abstract that some more, looping it somehow, or having the loop happen inside print_dialogue itself. An array of strings would work, and could be replaced by another backend like reading it from a file later.
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LEARN ABOUT DEBIAN
renpy
renpy(6) Games renpy(6)NAME
renpy - engine for creating visual novels
SYNOPSIS
renpy [path to the script directory]
DESCRIPTION
Ren'Py is a programming language and runtime, intended to ease the creation of visual-novel type games. It contains features that make it
easy to display thoughts, dialogue, and menus; to display images to the user; to write game logic; and to support the saving and loading of
games.
Ren'Py tries to be like an executable script, allowing you to get a working game without much more effort than is required to type the game
script into the computer.
Ren'Py is implemented on top of python, and that python heritage shows through in many places. Many Ren'Py statements allow python expres-
sions to be used, and there are also Ren'Py statements that allow for the execution of arbitrary python code. Many of the less-used fea-
tures of Ren'Py are exposed to the user by way of python. By only requiring use of the simplest features of python, it's hoped that Ren'Py
will be usable by all game authors.
USAGE
If you run the program without any arguments, zou will get an interactive launcher from where you can select, run and work different
projects.
For running a script, you need to give the full path to the directory that contains the game you want to play.
For example: renpy /usr/share/games/renpy/demo/
To learn how to use the game interface, you should install and play renpy-demo.
FILES
The game data for each user is stored at ~/.renpy/ directory.
The scripts can be installed in the system bz placing them under /usr/share/games/renpy/ , but you can run any script in an arbitrarz
directory just by telling the path as the parameter to the game.
SEE ALSO
You can find more information at http://www.renpy.org/
May 2007 renpy(6)
11-25-2010
