using Encompass;
using PongFE.Components;
using PongFE.Messages;

namespace PongFE.Engines
{
    [Sends(typeof(MotionMessage))]
    [QueryWith(typeof(PositionComponent), typeof(VelocityComponent))]
    public class VelocityEngine : Engine
    {
        public override void Update(double dt)
        {
            foreach (var entity in TrackedEntities)
            {
                ref readonly var velocityComponent = ref GetComponent<VelocityComponent>(entity);
                SendMessage(new MotionMessage(entity, velocityComponent.Velocity * (float)dt));
            }
        }
    }
}