Introduction to the game engine

About the game engine

Game engine is a collection of development tools used to improve the efficiency of game development. The development of most VR games is inseparable from the game engine. A qualified modern game engine must provide some or all of the following tool modules:

Tool module	Introduce
Render	It is responsible for synthesizing and displaying scene content on the screen, including pictures, 3D models, lighting, particle effects, etc.
Physics	Responsible for giving game objects realistic or customized physical effects. For example, in the real world, you have to go around a wall to get to the other side, which also needs to be implemented in the game.
Audio	It is responsible for synthesizing and displaying background music and sound effects in the game.
Input	Responsible for information input from hardware devices (headsets and controllers).
Animation	It is responsible for rendering game objects in various animation ways, including frame animation, skeletal animation, skin animation (expression animation), etc.
Level	It is responsible for editing the position, state and game logic of each object in the game scene.
Debug	Responsible for game performance monitoring and logic debugging.
Migration (cross platform)	It is responsible for porting the same set of game logic to different devices.
Network	Communicate with the web server. Various network protocols must be supported.

About the Unity engine

Unity Engine is a game engine that focuses on ease of use, functionality and cross-platform porting, and is also the most used game engine by VR game developers. More information is available Unity Official Website.