Aimbot-ParallelEnv/Assets/Script/UI/StartMenuAnimations.cs

using DG.Tweening;
using UnityEngine;

public class StartMenuAnimations : MonoBehaviour
{
    [SerializeField] private GameObject maskObj;
    [SerializeField] private GameObject mixButton;
    [SerializeField] private GameObject attackButton;
    [SerializeField] private GameObject gotoButton;
    [SerializeField] private GameObject freeButton;

    [Header("Animation Parameter")]
    [SerializeField] private float animeDuration = 0.2f;

    [SerializeField] private float animeMoveXDistance = 20f;
    [SerializeField] private float animeMoveYDistance = 20f;

    [SerializeField] private float animeScaleX = 1.2f;
    [SerializeField] private float animeScaleY = 1.2f;

    [SerializeField] private float maskScaleX = 1;
    [SerializeField] private float maskScaleY = 0.4f;

    private Vector3 mixOriginDestination;
    private Vector3 attackOriginDestination;
    private Vector3 gotoOriginDestination;
    private Vector3 freeOriginDestination;

    private Vector3 mixDestination;
    private Vector3 attackDestination;
    private Vector3 gotoDestination;
    private Vector3 freeDestination;

    private Vector3 originalCanvas;

    private PolygonCollider2D parallelogramPolygon;
    private bool isMouseOverMask = false;

    private void Start()
    {
        originalCanvas = transform.parent.position;
        // get start position
        mixOriginDestination = mixButton.transform.position;
        attackOriginDestination = attackButton.transform.position;
        gotoOriginDestination = gotoButton.transform.position;
        freeOriginDestination = freeButton.transform.position;

        // transform local vector3 to world vector3 by parent
        mixDestination = mixButton.transform.position + new Vector3(animeScaleX * animeMoveXDistance, animeScaleY * animeMoveYDistance, 0);
        attackDestination = attackButton.transform.position + new Vector3(animeMoveXDistance, animeMoveYDistance, 0);
        gotoDestination = gotoButton.transform.position - new Vector3(animeMoveXDistance, animeMoveYDistance, 0);
        freeDestination = freeButton.transform.position - new Vector3(animeScaleX * animeMoveXDistance, animeScaleY * animeMoveYDistance, 0);

        //get polygon from maskOBJ
        parallelogramPolygon = maskObj.GetComponent<PolygonCollider2D>();

        // minimize mask object
        MinimizeMaskObj();
    }

    private void Update()
    {
        // check if mouse is in parallelogram
        if (!isMouseOverMask && parallelogramPolygon.OverlapPoint(Input.mousePosition))
        {
            isMouseOverMask = true;
            OnMaskPointerEnter();
        }
        else if (isMouseOverMask && !parallelogramPolygon.OverlapPoint(Input.mousePosition))
        {
            isMouseOverMask = false;
            OnMaskPointerExit();
        }
    }

    private void OnMaskPointerEnter()
    {
        // dotween move button
        mixButton.transform.DOMove(fixCanvas(mixDestination), animeDuration, true).SetEase(Ease.OutCirc).Play();
        attackButton.transform.DOMove(fixCanvas(attackDestination), animeDuration, true).SetEase(Ease.OutCirc).Play();
        gotoButton.transform.DOMove(fixCanvas(gotoDestination), animeDuration, true).SetEase(Ease.OutCirc).Play();
        freeButton.transform.DOMove(fixCanvas(freeDestination), animeDuration, true).SetEase(Ease.OutCirc).Play();
        MaximizeMaskObj();
    }

    private void OnMaskPointerExit()
    {
        // dotween move button batck to original position
        mixButton.transform.DOMove(fixCanvas(mixOriginDestination), animeDuration, true).SetEase(Ease.OutCirc).Play();
        attackButton.transform.DOMove(fixCanvas(attackOriginDestination), animeDuration, true).SetEase(Ease.OutCirc).Play();
        gotoButton.transform.DOMove(fixCanvas(gotoOriginDestination), animeDuration, true).SetEase(Ease.OutCirc).Play();
        freeButton.transform.DOMove(fixCanvas(freeOriginDestination), animeDuration, true).SetEase(Ease.OutCirc).Play();
        MinimizeMaskObj();
    }

    private void MinimizeMaskObj()
    {
        // minimize mask object use dotween doscale
        maskObj.transform.DOScaleX(maskScaleX, animeDuration).SetEase(Ease.OutCirc).Play();
        maskObj.transform.DOScaleY(maskScaleY, animeDuration).SetEase(Ease.OutCirc).Play();
    }

    private void MaximizeMaskObj()
    {
        // maximize mask object use dotween doscale
        maskObj.transform.DOScaleX(1, animeDuration).SetEase(Ease.OutCirc).Play();
        maskObj.transform.DOScaleY(1, animeDuration).SetEase(Ease.OutCirc).Play();
    }

    private Vector3 fixCanvas(Vector3 vector)
    {
        // fix position of button while canvas is changed
        return vector.FixCanvas(originalCanvas, transform.parent.position);
    }
}