status/CurseHurtLoseXp.cs
using System;
using System.Collections.Generic;
using System.Linq;
using Sandbox;

[Status(4, 0, 0.7f, 0, true )]
public class CurseHurtLoseXp : Status
{
	public CurseHurtLoseXp()
    {
		Title = "Brain Injury";
		IconPath = "textures/icons/curse_hurt_lose_xp.png";
	}

	public override void Init( Player player )
	{
		base.Init(player);
	}

	public override void Refresh()
    {
		Description = GetDescription(Level);
	}

    public override string GetDescription(int newLevel)
    {
        return string.Format("When hurt by non-self dmg, lose XP equal to {0}% of the dmg", GetPercentForLevel( newLevel ) );
    }

    public override string GetUpgradeDescription(int newLevel)
    {
        return newLevel > 1 ? string.Format( "When hurt by non-self dmg, lose XP equal to {0}%→{1}% of the dmg", GetPercentForLevel( newLevel - 1 ), GetPercentForLevel( newLevel ) ) : GetDescription(newLevel);
    }

    public override void OnHurt(float amount)
    {
		Player.LoseExperience( (int)Math.Ceiling(amount * GetAmountForLevel(Level)) );
    }

	public float GetAmountForLevel( int level )
	{
		return 0.25f * level;
	}

	public float GetPercentForLevel( int level )
	{
		return 25 * level;
	}
}