using Sandbox;
using System.Drawing;

public class FloaterImage : Component
{
	private TimeSince _timeSinceSpawn;

	public float Lifetime { get; set; }

	public string Filename { get; set; }

	private float _startScale;
	private float _endScale;
	private Vector2 _velocity;
	private float _deceleration;

	public float Scale { get; set; }
	public float Opacity { get; set; }

	public void Init( string filename, float lifetime, Vector2 velocity, float deceleration, float startScale, float endScale )
	{
		Filename = filename;
		Lifetime = lifetime;
		_velocity = velocity;
		_deceleration = deceleration;
		Scale = _startScale = startScale;
		_endScale = endScale;
	}

	protected override void OnStart()
	{
		base.OnStart();

		_timeSinceSpawn = 0f;
	}

	protected override void OnUpdate()
	{
		Opacity = Utils.Map( _timeSinceSpawn, 0f, 0.3f, 0f, 1f, EasingType.QuadOut ) * Utils.Map( _timeSinceSpawn, 0f, Lifetime - 0.1f, 1f, 0.1f, EasingType.ExpoIn ) * Utils.Map( _timeSinceSpawn, Lifetime - 0.3f, Lifetime - 0.05f, 1f, 0f, EasingType.Linear );
		Scale = Utils.Map( _timeSinceSpawn, 0f, Lifetime, _startScale, _endScale, EasingType.SineOut );

		WorldPosition += new Vector3( _velocity.x, _velocity.y, 0f ) * Time.Delta;
		_velocity *= (1f - _deceleration * Time.Delta);

		if ( _timeSinceSpawn > Lifetime )
		{
			GameObject.Destroy();
			Manager.Instance.NumFloaters--;
		}
	}
}