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CUSTOM GAME ENGINES: A Small Study

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 or Unity for their games (or that's what lot of people think) because d

How to Calculate a Rotation Matrix to Align Vector A to Vector B in 3D

Based on 'Avoiding Trigonometry' by Íñigo Quílez

Expanded derivation by Kevin - 29/11/18

Introduction

Original article: https://iquilezles.org/www/articles/noacos/noacos.htm

Mac limit bandwidth

Enable firewall

Apple menu -> System Preferences -> Security & Privacy -> Firewall

sudo pfctl -e

Example

sudo dnctl pipe 1 config bw 10Kbit/s

	// Tested on https://thebookofshaders.com/edit.php

	// bezier function from https://www.shadertoy.com/view/sdjBRy
	// if more control point needed : https://github.com/yiwenl/glsl-bezier-curve/blob/master/index.glsl

	#ifdef GL_ES
	precision mediump float;
	#endif

	uniform vec2 u_resolution;

	---
	created: <% tp.file.creation_date() %>
	---
	tags:: [[+Daily Notes]]

	# <% moment(tp.file.title,'YYYY-MM-DD').format("dddd, MMMM DD, YYYY") %>

	<< [[Timestamps/<% tp.date.now("YYYY", -1) %>/<% tp.date.now("MM-MMMM", -1) %>/<% tp.date.now("YYYY-MM-DD-dddd", -1) %>\|Yesterday]] \| [[Timestamps/<% tp.date.now("YYYY", 1) %>/<% tp.date.now("MM-MMMM", 1) %>/<% tp.date.now("YYYY-MM-DD-dddd", 1) %>\|Tomorrow]] >>

	---

	using UnityEngine;

	[RequireComponent( typeof(Camera) )]
	public class FlyCamera : MonoBehaviour {
	public float acceleration = 50; // how fast you accelerate
	public float accSprintMultiplier = 4; // how much faster you go when "sprinting"
	public float lookSensitivity = 1; // mouse look sensitivity
	public float dampingCoefficient = 5; // how quickly you break to a halt after you stop your input
	public bool focusOnEnable = true; // whether or not to focus and lock cursor immediately on enable

	import { useRef } from 'react';

	let uniqueId = 0;
	const getUniqueId = () => uniqueId++;

	export function useComponentId() {
	const idRef = useRef(getUniqueId());
	return idRef.current;
	}

	@echo off
	setlocal ENABLEEXTENSIONS ENABLEDELAYEDEXPANSION

	::this also support calls that contains a absolute windows path

	::check of one of the params contain a absolute windows path
	echo.%* \| findstr /r /c:"[a-z]:[\\/]" > nul
	if %errorlevel% == 1 (
	::if not just git with the given parameters
	call :git %*

	Shader "Name" {

	Properties {

	_Name ("display name", Range (min, max)) = number
	_Name ("display name", Float) = number
	_Name ("display name", Int) = number
	_Name ("display name", Color) = (number,number,number,number)
	_Name ("display name", Vector) = (number,number,number,number)

	type None = {
	flatMap<U>(f: (value: null) => Option<U>): None
	getOrElse<U>(def: U): U
	isEmpty(): true
	map<U>(f: (value: null) => U): None
	nonEmpty(): false
	orElse<U>(alternative: Option<U>): Option<U>
	}

	type Some<T> = {