1 files changed, 97 insertions, 0 deletions
diff --git a/ResolveHoleCollision.cs b/ResolveHoleCollision.cs
new file mode 100644
index 0000000..7220bf4
--- /dev/null
+++ b/ResolveHoleCollision.cs
@@ -0,0 +1,97 @@
+using UnityEngine;
+
+[AddComponentMenu("Relief Terrain/Helpers/Resolve Hole Collision")]
+[RequireComponent(typeof(Collider))]
+public class ResolveHoleCollision : MonoBehaviour
+{
+	public Collider[] entranceTriggers;
+
+	public TerrainCollider[] terrainColliders;
+
+	public float checkOffset = 1f;
+
+	public bool StartBelowGroundSurface;
+
+	private TerrainCollider terrainColliderForUpdate;
+
+	private Collider _collider;
+
+	private Rigidbody _rigidbody;
+
+	private void Awake()
+	{
+		_collider = GetComponent<Collider>();
+		_rigidbody = GetComponent<Rigidbody>();
+		for (int i = 0; i < entranceTriggers.Length; i++)
+		{
+			if (entranceTriggers[i] != null)
+			{
+				entranceTriggers[i].isTrigger = true;
+			}
+		}
+		if (!(_rigidbody != null) || !StartBelowGroundSurface)
+		{
+			return;
+		}
+		for (int j = 0; j < terrainColliders.Length; j++)
+		{
+			if (terrainColliders[j] != null && _collider != null)
+			{
+				Physics.IgnoreCollision(_collider, terrainColliders[j], ignore: true);
+			}
+		}
+	}
+
+	private void OnTriggerEnter(Collider other)
+	{
+		if (_collider == null)
+		{
+			return;
+		}
+		for (int i = 0; i < entranceTriggers.Length; i++)
+		{
+			if (entranceTriggers[i] == other)
+			{
+				for (int j = 0; j < terrainColliders.Length; j++)
+				{
+					Physics.IgnoreCollision(_collider, terrainColliders[j], ignore: true);
+				}
+			}
+		}
+	}
+
+	private void FixedUpdate()
+	{
+		if (!terrainColliderForUpdate)
+		{
+			return;
+		}
+		RaycastHit hitInfo = default(RaycastHit);
+		if (terrainColliderForUpdate.Raycast(new Ray(base.transform.position + Vector3.up * checkOffset, Vector3.down), out hitInfo, float.PositiveInfinity))
+		{
+			for (int i = 0; i < terrainColliders.Length; i++)
+			{
+				Physics.IgnoreCollision(_collider, terrainColliders[i], ignore: false);
+			}
+		}
+		terrainColliderForUpdate = null;
+	}
+
+	private void OnTriggerExit(Collider other)
+	{
+		if (_collider == null)
+		{
+			return;
+		}
+		for (int i = 0; i < entranceTriggers.Length; i++)
+		{
+			if (entranceTriggers[i] == other)
+			{
+				for (int j = 0; j < terrainColliders.Length; j++)
+				{
+					Physics.IgnoreCollision(_collider, terrainColliders[j], ignore: false);
+				}
+			}
+		}
+	}
+}