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Atlas File Format Specification

Torque Shader Engine, through resource version 140.

NOTE: this spec was originally written with Google Gemini, and later refined by implementing it into TorqueViewer and correcting against reference file data. Further fixes were added using GPT-4.6.

Overview

Atlas files are binary files used for paged terrain storage. They contain one or more Tables of Contents (TOCs), each holding chunk-reference records

jamesu

#!/usr/bin/env python3

import os
import math
import json
import argparse
from pathlib import Path

import numpy as np
from PIL import Image, ImageDraw, ImageFont

jamesu

/*
Copyright 2026 James S Urquhart

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), 
to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, 
and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 

jamesu

#!/usr/bin/env python3
#
# DevonThink database decoder
#
# Stuck on a desert island with no internet, unable to load your meticulously categorized DevonThink database? 
# This could be come in handy!
#
# This code should probably be considered in the public domain since it is basically just vibe coded with a load of prompts, 
# though feel free to fork and vibe code your own enhancements!
# Lovingly vibe coded 100% in ChatGPT.

jamesu

Building tgemit on OSX using SDL2

• Checkout the relevant branch (currently pbfix_mango)
• Make sure you have xcode, dev tools, and metal tools installed (i.e. xcodebuild -downloadComponent MetalToolchain)

Currently only dawn is known to work with this setup, so you need to build and install it somewhere. A script in lib can do this:

./build_dawn.sh getdeps ~/dawnbuild
./build_dawn.sh build ~/dawnbuild Release

jamesu

//#pragma GCC visibility push(hidden)

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include <math.h>
#include <sys/types.h>
#include <sys/socket.h>

jamesu

(module
  ;; --- Import from host: print(offset: i32) -> void
  (import "env" "print" (func $print (param i32)))

  ;; --- Linear memory: fixed at 2 pages (128 KiB) ---
  (memory (export "memory") 2 2)

  ;; --- Data segment: static string ---
  (data (i32.const 16) "Hello World\00")

jamesu

#include <stdio.h>
#include <sys/wait.h>
#include <sys/mman.h> 
#include <unistd.h> 
#include <semaphore.h> 
#include <string.h>
#include <pthread.h>

typedef struct {
    int value;                

jamesu

# HexFiend script to parse ThinkTanks .ter files

section "Header" {
    # Read the version (int32)
    set version [int8 version]
    set gridShift 8
    set lmShift 9

    # If version > 3, parse additional fields
    if {$version > 3} {

jamesu

template <typename V, int S, int T>
class TableLookup {
public:
   TableLookup(DataChunker* chunker) : mTables((S+(T-1)) / T, nullptr), mChunker(chunker), mNumEntries(0) {}

   bool insert(U32 address, const V& value);

   bool lookup(U32 address, V& value) const;