What is the meaning of appearance pattern in Unity game development

This article mainly introduces what the appearance mode of Unity game development means, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

1. Preface

In my opinion, the appearance pattern (Facade) does not require any code examples, because the way to implement it is simple, but it is up to us to weigh how to implement it. In game development, we often use appearance mode to integrate game sub-functions, and then provide more advanced interfaces for clients to use.

two。 Appearance mode

GoF is defined as follows:

Define a unified set of interfaces for the subsystem, which will make it easier for the subsystem to use

Here's my understanding.

Starting with the word "appearance", this model emphasizes that we only need to understand the surface, not the complex interior.

From the point of view of game development, we need to provide the client with an intermediate layer, which provides high-level interfaces. As long as the client calls these interfaces, the client can complete complex communication with multiple subsystems. And you don't need to care about the interaction between subsystems.

Give me a chestnut?

The internal operation mechanism of the car is complex, but it provides us with advanced interfaces such as steering wheel, dashboard, brake and throttle, so we do not need to understand complex systems such as engine system and power transmission system.

So the focus of the appearance mode is to hide the details of the interaction within the system and provide a simple and convenient interface. After that, the client only needs to go through this interface to operate a complex system and make them run smoothly.

3. Advantages

Easy division of labor and development

If everyone provides Facade interface class for their own system when working in a team, it is more pleasant to cooperate with each other if only one interface is provided to provide all the information when the system written by others is docked, instead of studying his code (everyone doesn't like studying other people's code).

Increase system security

After isolating the contact between the subsystem and the client, letting the Facade interface complete the initialization order of the subsystem will make the program less likely to go wrong. If the client is allowed to call the subsystem directly, it may occur that the A system has not been initialized, and the B system needs to call the functions in the A system, which will make an error.

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