1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72

//! Methods for reading texture data out of texmaps.mul
//!
//! Texmaps are used when non-flat surfaces need to be drawn
use color::{Color, Color16};
use std::fs::{File};
use mul_reader::MulReader;
use std::io::{Result, Cursor, Seek, Read};
use std::path::Path;
use byteorder::{LittleEndian, ReadBytesExt};
use image::{Rgba, RgbaImage};

const LARGE_TILE: usize = 0x8000;

pub struct TexMap {
    pub data: Vec<Color16>
}

impl TexMap {
    pub fn to_image(&self) -> RgbaImage {

        let tile_width = if self.data.len() * 2 >= LARGE_TILE {
            128
        } else {
            64
        };

        let mut buffer = RgbaImage::new(tile_width, tile_width);
        for (idx, pixel) in self.data.iter().enumerate() {
            let x = idx as u32 % tile_width;
            let y = idx as u32 / tile_width;
            let (r, g, b, a) = pixel.to_rgba();
            buffer.put_pixel(x, y, Rgba([r, g, b, a]));
        }
        buffer
    }
}

pub struct TexMapsReader<T: Read + Seek> {
    mul_reader: MulReader<T>
}

impl TexMapsReader<File> {

    pub fn new(index_path: &Path, mul_path: &Path) -> Result<TexMapsReader<File>> {
        let mul_reader = try!(MulReader::new(index_path, mul_path));
        Ok(TexMapsReader {
            mul_reader: mul_reader
        })
    }
}

impl <T: Read + Seek> TexMapsReader<T> {

    pub fn from_mul(reader: MulReader<T>) -> TexMapsReader<T> {
        TexMapsReader {
            mul_reader: reader
        }
    }

    pub fn read(&mut self, id: u32) -> Result<TexMap> {
        let raw = try!(self.mul_reader.read(id));
        let len = raw.data.len();
        let mut reader = Cursor::new(raw.data);
        let mut data = vec![];
        for _idx in 0..len / 2 {
            data.push(try!(reader.read_u16::<LittleEndian>()));
        }
        Ok(TexMap {
            data
        })
    }
}