Jacob Chapman chapmanjacobd

CUSTOM GAME ENGINES: A Small Study

WARNING: Article moved to separate repo to allow users contributions: https://github.com/raysan5/custom_game_engines

A couple of weeks ago I played (and finished) A Plague Tale, a game by Asobo Studio. I was really captivated by the game, not only by the beautiful graphics but also by the story and the locations in the game. I decided to investigate a bit about the game tech and I was surprised to see it was developed with a custom engine by a relatively small studio. I know there are some companies using custom engines but it's very difficult to find a detailed market study with that kind of information curated and updated. So this article.

Nowadays lots of companies choose engines like [Unreal](https:

Notes on using FFMPEG and FFPROBE

Count frames in a video

Get reported number of frames

Get the reported and actual number of frames in a video.

Note: I recently found a video that reported having 2985 frames, but actually only had 29 frames, which were all keyframes.

Install/copy:

Run keybinds.ahk with autohotkey, Win+Enter spawns new terminal.

	SELECT ?ingredient ?ingredientLabel (GROUP_CONCAT(DISTINCT ?sandwichLabel; SEPARATOR = ", ") AS ?sandwiches) WHERE {
	?sandwich ((wdt:P31?)/(wdt:P279*)) wd:Q28803;
	wdt:P527 ?ingredient.
	MINUS { ?ingredient (wdt:P279*) wd:Q7802. }
	SERVICE wikibase:label {
	bd:serviceParam wikibase:language "en", "fr".
	?sandwich rdfs:label ?sandwichLabel.
	?ingredient rdfs:label ?ingredientLabel.
	}
	}

	SELECT
	?film
	?title
	?directors
	?year
	WHERE
	{
	SELECT
	?film
	?title

	/*
	Copy this into the console of any web page that is interactive and doesn't
	do hard reloads. You will hear your DOM changes as different pitches of
	audio.

	I have found this interesting for debugging, but also fun to hear web pages
	render like UIs do in movies.
	*/

	const audioCtx = new (window.AudioContext \|\| window.webkitAudioContext)()

	#!/bin/bash

	# set -x

	print_usage() {
	echo "$0 [--map=0:3] video_file" >&2
	echo "" >&2
	echo "With video_file the path to a file like mkv which embeds the subtitles" >&2
	echo "--map: use the specified embedded subtitle." >&2
	echo "" >&2

	// decrypting Amtrak's real-time train location geoJSON feed
	// based on https://github.com/Vivalize/Amtrak-Train-Stats
	const fetch = require('node-fetch');
	const CryptoJS = require('crypto-js');

	// this is the xhr call done by https://www.amtrak.com/track-your-train.html containing encrypted train location data
	const dataUrl = 'https://maps.amtrak.com/services/MapDataService/trains/getTrainsData';

	// these constants are pulled from RoutesList.v.json, which is an object with keys 'arr', 's', and 'v'
	const sValue = '9a3686ac'; // found at s[8]

	Leave a comment with the name of an application (or multiple) that replaces a function typically done with a modern web browser.
	I.E. an application that allows YouTube to be watched without a browser.