1const std = @import("std");
 2
 3const WADHeader = struct { identification: [4]u8 };
 4
 5pub fn main() !void {
 6    var file = try std.fs.cwd().openFile("doom.wad", .{});
 7    defer file.close();
 8
 9    var buffer = try std.heap.page_allocator.alignedAlloc(u8, @alignOf(WADHeader), @sizeOf(WADHeader));
10    defer std.heap.page_allocator.free(buffer);
11
12    _ = try file.read(buffer);
13
14    var header: *const WADHeader = @as(*const WADHeader, @ptrCast(buffer.ptr));
15    std.debug.print("WAD Type: {s}\n", .{header.identification});
16}