Detailed explanation of the differences, advantages and disadvantages between ngui and ugui in Unity game development

Unity3D is a cross-platform game development engine that supports multiple platforms, including PC, mobile devices and consoles. In Unity3D, the UI system is a very important part of game development. It is responsible for the display and interaction of the user interface in the game.

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In Unity3D, there are two main UI systems to choose from, namely NGUI (Next-Gen UI) and UGUI (Unity GUI). They have different characteristics and applicable scenarios. Their differences, advantages and disadvantages, and code implementation will be introduced in detail below.

1. Difference:
   NGUI is the early UI system of Unity3D. It is a UI system based on GameObject. NGUI uses its own rendering pipeline to display the UI by rendering UI elements into a texture on the screen, and then rendering the texture onto the screen. NGUI is characterized by lightweight, high performance and flexibility, and the UI style and layout can be freely customized.
   UGUI is a UI system launched later by Unity3D. It is a UI system based on Canvas. UGUI uses the Unity3D rendering pipeline to display the UI by directly rendering UI elements to the screen. UGUI is characterized by strong ease of use, rich functions and high scalability, and provides a wealth of UI components and interactive functions.
2. Pros and Cons:
   Pros of NGUI:

Disadvantages of NGUI:

• • Steep learning curve: NGUI uses its own API and scripts, so compared to UGUI, the learning cost is higher.
  • Less community support: Since NGUI is an early UI system, there is currently less community support and slower updates and maintenance.

Advantages of UGUI:

• • Ease of use: UGUI uses the rendering pipeline of Unity3D and is seamlessly integrated with other functions of Unity3D, making it more convenient to use.
  • 

Disadvantages of UGUI:

• • Low performance: Because UGUI uses the Unity3D rendering pipeline, the rendering performance is poor compared to NGUI.
  • Weaker customization: UGUI provides some customization options, but compared to NGUI, customization is weaker.

Code implementation:
The following takes UGUI as an example to briefly introduce the code implementation of UGUI.
First, create a new scene in Unity3D and create a Canvas object as a container for the UI. Then add a Button component on the canvas to achieve a click effect.
Next, get the button object in the code and add a click event listener for the button. The specific code is as follows:

using UnityEngine;
using UnityEngine.UI;

public class ButtonClick : MonoBehaviour
{
    private Button button;

    private void Start()
    {
        button = GetComponent<Button>();
        button.onClick.AddListener(OnClick);
    }

    private void OnClick()
    {
        Debug.Log("Button Clicked!");
    }
}

Clicked!" log information.
The above is a simple code implementation example of UGUI. By adding a listener, we can add various interactive effects and logic to the button.