Doom WAD Reader

// WAD reference: http://doom.wikia.com/wiki/WAD
// DOOM WAD code: code.metager.de/source/xref/idsoftware/doom/w_wad.c

import std.c.windows.windows;
import std.stdio;

struct wadinfo_t
{
    char[4] identification;
    int     numlumps;
    int     infotableofs;
}

struct filelump_t
{
    int     filepos;
    int     size;
    char[8] name;
}

// Integers little-endianize themselves?
void main()
{
    // Get file.
    // rawRead insists on using arrays, thus the "[1])[0]" hack.
    auto wad = File("doom.wad", "r");
    auto info = wad.rawRead(new wadinfo_t[1])[0];

    // Get lumps.
    // Keeping the name member in filelump_t keeps the code elegant.
    // Associative arrays may not be a good solution if lump order is a concern.
    wad.seek(info.infotableofs);
    filelump_t[char[8]] lumps;
    {
    auto temp = wad.rawRead(new filelump_t[info.numlumps]);
    foreach (lump; temp) lumps[lump.name] = lump;
    }

    // Get ENDOOM lump.
    wad.seek(lumps["ENDOOM"].filepos);
    auto endoom = wad.rawRead(new char[lumps["ENDOOM"].size]);

    // Output ENDOOM.
    // printf() is used because it works with Windows functions.
    auto console = GetStdHandle(STD_OUTPUT_HANDLE);
    for (int i = 0; i < endoom.length; i += 2)
    {
        SetConsoleTextAttribute(console, endoom[i + 1]);
        printf("%.*s", endoom[i] ~ "");
    }
}