AppleHillsProduction/Assets/Scripts/UI/AppSwitcher.cs

using System;
using UnityEngine;
using UnityEngine.UI;
using SkiaSharp.Unity;
using Input;
using AppleHills.Core;
using UI.Core;
using Pixelplacement;
using Pixelplacement.TweenSystem;
using UI;

public class AppSwitcher : UIPage
{
    public GameObject rainbowIn;
    public GameObject rainbowOut;
    public GameObject gameLayoutContainer;
    public GameObject exitButton;
    public RectMask2D rectMask;
    
    [Header("Slide Animation Settings")]
    public float slideDuration = 0.5f;
    
    private SkottiePlayerV2 rainbowInPlayer;
    private SkottiePlayerV2 rainbowOutPlayer;
    private TweenBase slideInTween;
    private TweenBase slideOutTween;

    internal override void OnManagedAwake()
    {
        base.OnManagedAwake();

        PageName = "AppSwitcher";
        rainbowInPlayer = rainbowIn.GetComponent<SkottiePlayerV2>();
        rainbowOutPlayer = rainbowOut.GetComponent<SkottiePlayerV2>();
        
        if (rectMask == null)
        {
            rectMask = GetComponent<RectMask2D>();
        }
        
        // Initially hide both
        rainbowIn.SetActive(true);
        exitButton.SetActive(false);
    }

    protected override void DoTransitionIn(Action onComplete)
    {
        InputManager.Instance.SetInputMode(InputMode.UI);
        
        gameLayoutContainer.SetActive(true);

        // Hide rainbow out, show rainbow in
        rainbowOut.SetActive(false);
        
        // Play animation on rainbow in without resetting state
        rainbowInPlayer.PlayAnimation(true);
        
        // Slide in animation - tween padding.left from 1700 to 0
        slideInTween = TweenPaddingLeft(1700f, 0f, Tween.EaseOut, () =>
        {
            onComplete?.Invoke();
            rainbowOut.SetActive(true);
            exitButton.SetActive(true);
        }); 
    }

    protected override void DoTransitionOut(Action onComplete)
    {
        rainbowIn.SetActive(false);
        
        // Play animation on rainbow out with resetting state
        rainbowOutPlayer.PlayAnimation(true);

        // Hide the exit button
        exitButton.SetActive(false);
        
        // Slide out animation - tween padding.left from 0 to 1700
        slideOutTween = TweenPaddingLeft(0f, 1700f, Tween.EaseIn, () => {
            gameLayoutContainer.SetActive(false);
            rainbowIn.SetActive(true);
            onComplete?.Invoke();
            InputManager.Instance.SetInputMode(InputMode.GameAndUI);
        });
    }
    
    /// <summary>
    /// Tweens the left padding of the rectMask from startValue to endValue.
    /// </summary>
    private TweenBase TweenPaddingLeft(float startValue, float endValue, AnimationCurve easeCurve, Action onComplete)
    {
        // Set starting position
        Vector4 startPadding = rectMask.padding;
        startPadding.x = startValue;
        rectMask.padding = startPadding;
        
        return Tween.Value(
            startValue, 
            endValue, 
            (value) => {
                Vector4 padding = rectMask.padding;
                padding.x = value;
                rectMask.padding = padding;
            },
            slideDuration,
            0f, // no delay
            easeCurve,
            Tween.LoopType.None,
            null, // onStart
            onComplete
        );
    }
    
    protected override void OnDestroy()
    {
        base.OnDestroy();
        
        // Clean up tweens
        slideInTween?.Stop();
        slideOutTween?.Stop();
    }

}