using System;
using sharp.json.attributes;
namespace BigBot
{
	[JSONClassPolicy( Policy = JSONPolicy.ATTRIBUTED)]
	public class SmoothValue
	{
		[JSONField(Alias = "last")]
		public double LastValue { get; private set; }

		[JSONField( Alias = "current")]
		public double CurrentValue { get; private set; }

		[JSONField(Alias = "Kp")]
		public double Kp { get; set; }

		[JSONField(Alias = "sum")]
		private double sum;

		public SmoothValue()
		{
		}
		public SmoothValue(double Kp)
		{
			this.Kp = Kp;
		}

		public void Clear()
		{
			this.sum = 0;
		}

		public void Set(double value){
			this.sum = (value / this.Kp) - value;
			this.CurrentValue = value;
			this.LastValue = value;
		}

		public void Add(double value)
		{
			LastValue = CurrentValue;

			this.sum += value;
			CurrentValue = this.sum * this.Kp;
			this.sum -= CurrentValue;
		}

		public double dT {
			get {
				return this.CurrentValue - this.LastValue;
			}
		}

		public static implicit operator double(SmoothValue svalue){
			return svalue.CurrentValue;
		}


	}
}