Write a Class for Unity that displays a toast on the screen for a few seconds then fade out. It should have a queue of messages and only display one at a time. If a user taps it, it should dismiss it before the fade out time.
user
Sure, I can give you a basic script in Unity using C# to achieve this. This script assumes you have an object named "Toast UI" in your Unity scene, which you want the toast message to display.

First, create a new script in Unity named "ToastHandler.cs" or similar.

```csharp
using UnityEngine;
using UnityEngine.UI;

public class ToastHandler : MonoBehaviour
{
    [SerializeField] private Text _text;
    [SerializeField] private float _duration = 3f;
    [SerializeField] private int _queueSize = 2;
    private float _timer;

    private Queue<string> _messages = new Queue<string>();

    void Start()
    {
        _text.text = _messages.Count > 0 ? _messages.Dequeue() : string.Empty;
        _timer = _duration;
    }

    void Update()
    {
        if (_messages.Count > 0 && _timer > 0)
        {
            _text.text = _messages.Count > 0 ? _messages.Dequeue() : string.Empty;
            _timer -= Time.deltaTime;
        }
        else if (_text.text != string.Empty)
        {
            _text.text = string.Empty;
        }
    }

    public void AddMessage(string message)
    {
        if (_messages.Count < _queueSize)
        {
            _messages.Enqueue(message);
        }
    }
}
```

This script adds a Text component to your "Toast UI" object in Unity and initializes it with the first message from the queue. The messages are added to this queue using the `AddMessage` function. If another message is added while the current message is displaying, the queue is updated and the current message is replaced with the new one.

This script only allows two messages at a time. You can adjust the queueSize to any number you want.

You will also need to add a UI button to your "Toast UI" object and handle the button click in this script. You can use Event Trigger > Click in Unity to add a click event handler.

```csharp
public void OnButtonClick()
{
    _messages.Enqueue(string.Empty); // Dismiss the toast before it fades out
}
```

In this example, an empty string is added to the queue, which clears the text component before the fadeout.
assistant
Write a Class for Unity that displays a toast on the screen for a few seconds then fade out. It should have a queue of messages and only display one at a time. If a user taps it, it should dismiss it before the fade out time.
user
Sure, I can help you draft a basic C# class for a Unity toast system. Please note that this is a simplified version and you may need to adjust it according to your project's requirements. This class assumes you have a `Text` component for the toast message and an `Image` component for the toast background.

```csharp
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;

public class ToastManager : MonoBehaviour, IPointerClickHandler
{
    public Text toastText;
    public Image toastImage;
    public float displayTime = 3f;
    public float fadeTime = 1f;
    private Queue<string> toastQueue = new Queue<string>();
    private Coroutine currentToast = null;

    public void EnqueueToast(string message)
    {
        toastQueue.Enqueue(message);
        if (currentToast == null)
        {
            currentToast = StartCoroutine(DisplayToast());
        }
    }

    IEnumerator DisplayToast()
    {
        while (toastQueue.Count > 0)
        {
            string message = toastQueue.Dequeue();
            toastText.text = message;
            toastImage.CrossFadeAlpha(1, 0, false);
            yield return new WaitForSeconds(displayTime);
            yield return FadeOut();
        }
        currentToast = null;
    }

    IEnumerator FadeOut()
    {
        float timer = 0;
        while (timer < fadeTime)
        {
            timer += Time.deltaTime;
            toastImage.CrossFadeAlpha(0, timer / fadeTime, false);
            yield return null;
        }
    }

    public void OnPointerClick(PointerEventData eventData)
    {
        if (currentToast != null)
        {
            StopCoroutine(currentToast);
            currentToast = null;
            toastImage.CrossFadeAlpha(0, 0, false);
        }
    }
}
```

This script should be attached to the game object that represents your toast. The `EnqueueToast` method is used to add a message to the queue. The `DisplayToast` coroutine displays each toast in the queue one by one. The `FadeOut` coroutine fades out the toast after the display time has elapsed. The `OnPointerClick` method is used to dismiss the toast when it's clicked.
assistant