relics/RelicMouseTrap.cs
using Sandbox;
using System.Reflection.PortableExecutable;
using System.Runtime.Versioning;
using System.Threading.Tasks;

public class RelicMouseTrap : Relic
{
	public override bool ShouldHandleEvent( EventType eventType )
	{
		return eventType == EventType.ClaimBounty;
	}

	public override async Task HandleEventAsync(EventType eventType)
	{
		Manager.Instance.PushEventMessage( this, eventType );

		await Task.DelayRealtime( 100 );

		Manager.Instance.PlaySfxCenter( "mouse_trap", volume: 0.8f, pitch: Game.Random.Float( 0.95f, 1.05f ) );

		await Task.DelayRealtime( 400 );

		var camera = Scene.Camera;
		var ray = camera.ScreenPixelToRay( new Vector3( Screen.Width / 2, Screen.Height / 2, 0f ) );
		var tr = Scene.Trace.Ray( ray, 10000f ).Run();

		int maxHP = Level;
		Manager.Instance.SpawnMaxHPFloater( maxHP, tr.EndPosition );
		Manager.Instance.MaxHP += maxHP;

		Manager.Instance.TimeSinceHPChanged = 0f;

		await Task.DelayRealtime( 500 );
		
		Manager.Instance.PopEventMessage();
	}
}