Game loops in various game Engines

There are many game engines available, each with its own way of implementing the game loop. Here are some examples of major game engines and their approaches to the game loop:

Unity

Unity was first released in 2005 by Unity Technologies.  Unity supports several programming languages for scripting, including C#, UnityScript (a variation of JavaScript), and Boo.

1. void FixedUpdate() { // Physics calculations here } void Update() { // Game logic and rendering here }

Unreal Engine

Unreal Engine was first released in 1998 by Epic Games. Unreal Engine uses a custom scripting language called UnrealScript, but it has since been deprecated in favor of using C++ or Blueprints, a visual scripting language that allows developers to create game logic without writing code.

1. while (running) { ProcessInput(); Tick(); Render(); }

Godot Engine

Godot Engine was first released in 2014 by Juan Linietsky and Ariel Manzur. Godot Engine uses its own scripting language called GDScript, which is similar to Python.

1. func _physics_process(delta): // Physics calculations here func _process(delta): // Game logic here func _draw(): // Rendering here

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CryEngine

CryEngine was first released in 2002 by Crytek. CryEngine uses a scripting language called Lua, which is a lightweight and easy-to-learn language often used for game development.

1. while (running) { ProcessInput(); TickPhysics(); TickAnimation(); TickGameLogic(); Render(); }

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Construct

Construct was first released in 2007 by Scirra. Construct uses its own event-based scripting system, which allows developers to create game logic using a visual interface without writing code. However, it also supports JavaScript and TypeScript for more advanced scripting needs.

1. function physics_tick() { // Physics calculations here } function game_logic_tick() { // Game logic here } while (running) { physics_tick(); game_logic_tick(); render(); }

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