DroneCameraTracker.cs

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using Microsoft.Xna.Framework;
 
namespace Terraria.DataStructures;
 
public class DroneCameraTracker
{
    private Projectile _trackedProjectile;
 
    private int _lastTrackedType;
 
    private bool _inUse;
 
    public void Track(Projectile proj)
    {
        _trackedProjectile = proj;
        _lastTrackedType = proj.type;
    }
 
    public void Clear()
    {
        _trackedProjectile = null;
    }
 
    public void WorldClear()
    {
        _lastTrackedType = 0;
        _trackedProjectile = null;
        _inUse = false;
    }
 
    private void ValidateTrackedProjectile()
    {
        if (_trackedProjectile == null || !_trackedProjectile.active || _trackedProjectile.type != _lastTrackedType || _trackedProjectile.owner != Main.myPlayer || !Main.LocalPlayer.remoteVisionForDrone)
        {
            Clear();
        }
    }
 
    public bool IsInUse()
    {
        return _inUse;
    }
 
    public bool TryTracking(out Vector2 cameraPosition)
    {
        ValidateTrackedProjectile();
        cameraPosition = default(Vector2);
        if (_trackedProjectile == null)
        {
            _inUse = false;
            return false;
        }
        cameraPosition = _trackedProjectile.Center;
        _inUse = true;
        return true;
    }
}