using UnityEngine;
using System.Collections;
using NoobsUnited;
using NoobsUnited.Swizzle;

namespace UnityEngine
{
    public partial class VPhysics2D : MonoBehaviour
    {
        public static RaycastHit2D[]  BoxCastAll(Vector2 origin, Vector2 size, float angle, Vector2 direction, float distance = Mathf.Infinity, int layerMask = Physics.DefaultRaycastLayers, float minDepth = -Mathf.Infinity, float maxDepth = Mathf.Infinity)
        {
            GenerateRenderer ();
            CubeGeometry originGeometry = new CubeGeometry(origin, size);
            RaycastHit2D[] hits = Physics2D.BoxCastAll (origin, size, angle, direction, distance, layerMask, minDepth, maxDepth);
            if(hits.Length > 0)
            {
                foreach(RaycastHit2D hit in hits)
                {
                    originGeometry.contactPoints.Add (hit.point);
                }

                CubeGeometry endCube = new CubeGeometry(origin + direction * distance, size);
                endCube.color.a = .5f;
                _geometry.Add (endCube);

                LineGeometry directionIndicatorAbove = new LineGeometry(origin + Vector2.up * size.y, endCube.origin.xy() + Vector2.up * size.y);
                directionIndicatorAbove.color.a = .3f;
                _geometry.Add (directionIndicatorAbove);

                LineGeometry directionIndicatorBelow = new LineGeometry(origin - Vector2.up * size.y, endCube.origin.xy() - Vector2.up * size.y);
                directionIndicatorBelow.color.a = .3f;
                _geometry.Add (directionIndicatorBelow);
            }
            else
            {
                if(distance == Mathf.Infinity)
                {
                    _geometry.Add (new LineGeometry(originGeometry.origin, originGeometry.origin + (Vector3)direction.normalized * maxShapeCastDistance));

                    CubeGeometry endCube = new CubeGeometry(origin + direction * maxShapeCastDistance, size);
                    endCube.color.a = .5f;
                    _geometry.Add (endCube);

                    LineGeometry directionIndicatorAbove = new LineGeometry(origin + Vector2.up * size.y, endCube.origin.xy() + Vector2.up * size.y);
                    directionIndicatorAbove.color.a = .3f;
                    _geometry.Add (directionIndicatorAbove);

                    LineGeometry directionIndicatorBelow = new LineGeometry(origin - Vector2.up * size.y, endCube.origin.xy() - Vector2.up * size.y);
                    directionIndicatorBelow.color.a = .3f;
                    _geometry.Add (directionIndicatorBelow);
                }
                else if(distance != Mathf.Infinity && distance >= 0)
                {
                    CubeGeometry endCube = new CubeGeometry(origin + direction * distance, size);
                    endCube.color.a = .5f;
                    _geometry.Add (endCube);

                    LineGeometry directionIndicatorAbove = new LineGeometry(origin + Vector2.up * size.y, endCube.origin.xy() + Vector2.up * size.y);
                    directionIndicatorAbove.color.a = .3f;
                    _geometry.Add (directionIndicatorAbove);

                    LineGeometry directionIndicatorBelow = new LineGeometry(origin - Vector2.up * size.y, endCube.origin.xy() - Vector2.up * size.y);
                    directionIndicatorBelow.color.a = .3f;
                    _geometry.Add (directionIndicatorBelow);
                }
            }

            _geometry.Add(originGeometry);
            return hits;
        }
    }
}