namespace Sandbox;

/// <summary>
/// A two component vector whose X and Y are <see cref="ParticleFloat"/>s, so each
/// component can be a constant, a random range, or a curve evaluated per particle.
/// Mirrors the engine's <see cref="ParticleVector3"/> for the float2 case.
/// </summary>
public class ParticleVector2
{
	[Property] public ParticleFloat X { get; set; }
	[Property] public ParticleFloat Y { get; set; }

	public ParticleVector2()
	{
		// Default to constant-zero components so Evaluate never dereferences a null
		// ParticleFloat when the editor creates a fresh entry. JSON deserialization
		// overwrites these from the serialized X/Y.
		X = new ParticleFloat();
		Y = new ParticleFloat();
	}

	public ParticleVector2( ParticleFloat x, ParticleFloat y )
	{
		X = x;
		Y = y;
	}

	public Vector2 Evaluate( Particle particle, int seed )
	{
		return new Vector2( X.Evaluate( particle, seed ), Y.Evaluate( particle, seed ) );
	}

	public static implicit operator ParticleVector2( Vector2 v ) => new ParticleVector2( v.x, v.y );
}