bitsy-parser/README.md

bitsy-parser

a library for parsing Bitsy game data.

the version number follows Bitsy itself, so version 0.65.* targets Bitsy 6.5.

how to use

a simple example program:

extern crate bitsy_parser;
use std::{env, fs};
use bitsy_parser::game::Game;
use bitsy_parser::image::Image;

/// replaces the player avatar with a smiley face.
fn main() {
    let input_file = env::args().nth(1)
        .expect("No input path specified. Usage: `smiley infile outfile`");
    let output_file = env::args().nth(2)
        .expect("No output path specified. Usage: `smiley infile outfile`");

    let mut game = Game::from(fs::read_to_string(input_file).unwrap());

    game.avatar.animation_frames = vec![
        Image {
            pixels: vec![
                0,0,1,1,1,1,0,0,
                0,1,1,1,1,1,1,0,
                1,1,0,1,1,0,1,1,
                1,1,0,1,1,0,1,1,
                1,1,1,1,1,1,1,1,
                1,1,0,1,1,0,1,1,
                0,1,1,0,0,1,1,0,
                0,0,1,1,1,1,0,0,
            ]
        }
    ];

    fs::write(output_file, &game.to_string())
        .expect("Failed to write to output file");
}

some more practical uses would be things like:

• remove duplicate tiles
• merge two Bitsy games together
• programmatically create Bitsy games
• a Bitsy game editor

todo

• test for bitsy 7.0 and implement new features
• implement Result return types on ::from functions so we can handle errors
• output sprites/avatar in such a way that ordering is preserved (avatar seems to be somewhere in the sprites, after any numeric-ID sprites and before any alphabetic-ID sprites...)
• check multi-line endings/dialogues

tidy up

• refactor the more shonky bits to idiomatic rust