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path: root/JamHelper/Assets/JamTools/FPSControllerVelocity/Scripts/WallChecker.cs
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using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace JamTools
{


	public class WallChecker : MonoBehaviour
	{

		private bool m_IsOnWall;
		public bool IsOnWall
		{
			get
			{
				return m_IsOnWall;
			}
		}

		private List<Collider> m_Colliders = new List<Collider>();

		private void Update()
		{
			if (m_IsOnWall && m_Colliders.Count == 0)
			{
				m_IsOnWall = false;
			}
		}

		public bool GetCollisionPoint(out Vector3 point)
		{
			bool result = false;
			point = Vector3.zero;
			if (m_Colliders.Count > 0)
			{
				float dist = 100f;
				for (int i = 0; i < m_Colliders.Count; ++i)
				{
					Collider col = m_Colliders[i];
					Vector3 p = ColliderUtility.FindClosestPoint(col, transform.position);
					if (Vector3.Distance(p, transform.position) <= dist)
					{
						dist = Vector3.Distance(p, transform.position);
						point = p;
						result = true;
					}
				}
			}
			return result;
		}

		private void OnTriggerEnter(Collider other)
		{
			m_IsOnWall = true;

			m_Colliders.Add(other);
		}

		private void OnTriggerStay(Collider other)
		{
		}

		private void OnTriggerExit(Collider other)
		{
			if (m_Colliders.Contains(other))
			{
				m_Colliders.Remove(other);
			}
		}

	}

}