using UnityEngine;

namespace AibisDream.MiniGame.Language
{
    public static class ExpressionParticleGeometry
    {
        public static bool TryGetSeparation(
            Bounds first,
            Bounds second,
            float padding,
            out Vector2 direction,
            out float overlap)
        {
            float overlapX =
                Mathf.Min(first.max.x, second.max.x) -
                Mathf.Max(first.min.x, second.min.x) +
                padding;
            float overlapY =
                Mathf.Min(first.max.y, second.max.y) -
                Mathf.Max(first.min.y, second.min.y) +
                padding;

            if (overlapX <= 0f || overlapY <= 0f)
            {
                direction = Vector2.zero;
                overlap = 0f;
                return false;
            }

            Vector2 centerDelta = first.center - second.center;
            if (overlapX <= overlapY)
            {
                direction = new Vector2(centerDelta.x >= 0f ? 1f : -1f, 0f);
                overlap = overlapX;
            }
            else
            {
                direction = new Vector2(0f, centerDelta.y >= 0f ? 1f : -1f);
                overlap = overlapY;
            }

            return true;
        }
    }
}