using Syntriax.Engine.Core;
using Syntriax.Engine.Integration.MonoGame;

namespace Pong.Behaviours;

public class CircleBehaviour : Syntriax.Engine.Physics2D.Collider2DCircleBehaviour, IDrawableTriangle
{
    private const float CIRCLE_SEGMENT_COUNT = 32f;

    public ColorRGBA Color { get; set; } = new ColorRGBA(255, 255, 255);

    public void Draw(ITriangleBatch triangleBatch)
    {
        Recalculate();

        for (int i = 0; i < CIRCLE_SEGMENT_COUNT; i++)
        {
            float iPi1 = i / CIRCLE_SEGMENT_COUNT * 2f * Math.PI;
            float iPi2 = (i + 1f).Mod(CIRCLE_SEGMENT_COUNT) / CIRCLE_SEGMENT_COUNT * 2f * Math.PI;

            Vector2D firstVertex = new Vector2D(Math.Sin(iPi1), Math.Cos(iPi1)) * CircleWorld.Radius;
            Vector2D secondVertex = new Vector2D(Math.Sin(iPi2), Math.Cos(iPi2)) * CircleWorld.Radius;
            triangleBatch.Draw(new(CircleWorld.Center, CircleWorld.Center + firstVertex, CircleWorld.Center + secondVertex), Color);
        }
    }

    public CircleBehaviour(Circle circle) : base(circle) { }
    public CircleBehaviour(Circle circle, ColorRGBA color) : base(circle) { Color = color; }
}