ClientServer/Client/Assets/Scripts/Weapons/WeaponSway.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Threading.Tasks;
using UnityEngine;
using DG.Tweening;

//Thomas09

public class WeaponSway : MonoBehaviour
{
    
    [SerializeField] private FirstPersonController playerController;
    [SerializeField] private float amount;
    [SerializeField] private float maxAmount;
    [SerializeField] private float smoothAmount;
    
    private Vector3 refVelocity;
    private const string MouseX = "Look X";
    private const string MouseY = "Look Y";

    [System.NonSerialized] public float SwayX;
    [System.NonSerialized] public float SwayY;

    private Vector3 initialPosition;

    private bool isAirborn = false;
    private float refYVelocity;

    [SerializeField] private List<ThrowableController> ThrowableControllers;
    private Weapon _last = null;
    private Weapon _current = null;
    private bool _isGrenade = false;
    
    void Start()
    {
        initialPosition = transform.localPosition;
        playerController.OnLandEvent.AddListener(OnLanded);
        playerController.OnJumpEvent.AddListener(OnJump);
        foreach (var wChild in ThrowableControllers)
        {
            wChild.OnThrow += Throw;
        }
    }

    void Update()
    {
        SwayWeapon();

        if (isAirborn)
        {
            float appliedForce = Player.Instance.IsAiming ? 0.025f : 0.12f;
            float yVelocity = playerController.m_characterController.velocity.y;
            float clampedVelocity = Mathf.Clamp(yVelocity, -appliedForce, appliedForce);
            float smoothedVelocity = Mathf.SmoothDamp(transform.localPosition.y, -clampedVelocity, ref refYVelocity, 0.355f);
            transform.localPosition = new Vector3(transform.localPosition.x, smoothedVelocity, transform.localPosition.z);
        }
    }

    private void SwayWeapon()
    {
        if (!Player.Instance.IsAiming)
        {
            if (Player.Instance.updatePlayer)
            {
                var localCurrent = Player.Instance.GetWeaponData();
                if (localCurrent != null)
                {
                    // isGrenade
                    if (localCurrent.baseID == 23)
                        _isGrenade = true;
                    if (_current == null) _current = localCurrent;
                    else if (_current.baseID != localCurrent.baseID)
                    {
                        _last = _current;
                        _current = localCurrent;
                    }
                }
                float alteredMaxAmount = localCurrent?.weaponType == Weapon.WEAPON_TYPE.PISTOL ? maxAmount / 2 : maxAmount;
                float mouseX = -SwayX * amount;
                float mouseY = -SwayY * amount;
                mouseX = Mathf.Clamp(mouseX, -alteredMaxAmount, alteredMaxAmount);
                mouseY = Mathf.Clamp(mouseY, -alteredMaxAmount, alteredMaxAmount);

                Vector3 finalPosition = new Vector3(mouseX, mouseY, 0);
                transform.localPosition = Vector3.Lerp(transform.localPosition, finalPosition + initialPosition, Time.deltaTime * smoothAmount);
                //transform.localPosition = Vector3.SmoothDamp(transform.localPosition, finalPosition + initialPosition, ref refVelocity, Time.deltaTime * smoothAmount);
            }
            else
            {
                _current = Player.Instance.GetWeaponData();
            }
        }
        else
        {
            transform.localPosition = Vector3.Lerp(transform.localPosition, initialPosition, Time.deltaTime * smoothAmount);
        }
    }

    private void OnJump() => isAirborn = true;

    private async void Throw(Weapon weapon)
    {
        if (weapon == null) return;
        if (weapon.baseID == 23)
        {
            int index = await FindLastWeaponInInventory();
            if (index != -1)
            {
                PacketManager.sendClickItem(InventoryManager.Instance.inventoryItems[index], index);
            }
        }
    }

    private async Task<int> FindLastWeaponInInventory()
    {
        var id = -1;
        for (int i = 0; i < InventoryManager.Instance.inventoryItems.Length; i++)
        {
            id = ItemDef.GetInstance().getItemID(InventoryManager.Instance.inventoryItems[i]);
            if (id == _last.baseID) 
            {
                return i;
            }
            await Task.Delay(2); // fixed Update delay
        }
        return -1;
    }

    private void OnLanded()
    {
        isAirborn = false;

        float bounceAmount = Player.Instance.IsAiming ? -0.001f : -0.05f;
        float bounceInTime = Player.Instance.IsAiming ? 0.1f :  0.125f;
        float bounceOutTime = Player.Instance.IsAiming ? 0.1f : 0.2f;

        DOTween.Sequence()
            .Append(transform.DOLocalMoveY(bounceAmount, bounceInTime).SetEase(Ease.InSine))
            .Append(transform.DOLocalMoveY(0.0f, bounceOutTime).SetEase(Ease.OutSine));
    }
}