47 lines
1.1 KiB
Rust
47 lines
1.1 KiB
Rust
use std::io;
|
|
use std::io::{Error, ErrorKind};
|
|
|
|
use byteorder::{LE, ReadBytesExt};
|
|
|
|
pub struct Map {
|
|
pub width: usize,
|
|
pub height: usize,
|
|
pub tiles: Vec<u8>,
|
|
pub attrib: [u8; 0x100],
|
|
}
|
|
|
|
impl Map {
|
|
pub fn load_from<R: io::Read>(mut map_data: R, mut attrib_data: R) -> io::Result<Map> {
|
|
let mut magic = [0; 3];
|
|
|
|
map_data.read_exact(&mut magic)?;
|
|
|
|
if &magic != b"PXM" {
|
|
return Err(Error::new(ErrorKind::InvalidData, "Invalid magic"));
|
|
}
|
|
|
|
map_data.read_i8()?; // reserved, alignment?
|
|
|
|
let width = map_data.read_u16::<LE>()? as usize;
|
|
let height = map_data.read_u16::<LE>()? as usize;
|
|
let mut tiles = vec![0u8; width * height];
|
|
let mut attrib = [0u8; 0x100];
|
|
|
|
map_data.read_exact(&mut tiles)?;
|
|
attrib_data.read_exact(&mut attrib);
|
|
|
|
let map = Map {
|
|
width,
|
|
height,
|
|
tiles,
|
|
attrib,
|
|
};
|
|
|
|
Ok(map)
|
|
}
|
|
|
|
pub fn get_attribute(&self, x: usize, y: usize) -> u8 {
|
|
self.attrib[*self.tiles.get(self.width * y + x).unwrap_or_else(|| &0u8) as usize]
|
|
}
|
|
}
|