+init

1 files changed, 59 insertions, 0 deletions

diff --git a/GameCode/KeepRelativeRotationTo.cs b/GameCode/KeepRelativeRotationTo.cs
new file mode 100644
index 0000000..94dbe16
--- /dev/null
+++ b/GameCode/KeepRelativeRotationTo.cs
@@ -0,0 +1,59 @@
+using UnityEngine;
+
+public class KeepRelativeRotationTo : MonoBehaviour
+{
+	[SerializeField]
+	private Transform transformToKeepRelativeRotationTo;
+
+	[SerializeField]
+	private Vector3 upVector = Vector3.up;
+
+	private Quaternion initialOffset;
+
+	private Vector3 selfPosition;
+
+	private Vector3 otherPosition;
+
+	private Quaternion localRotationStart;
+
+	private Vector3 upVectorAdjusted;
+
+	private void PrepareData()
+	{
+		if ((bool)base.transform.parent)
+		{
+			selfPosition = base.transform.localPosition;
+			otherPosition = base.transform.parent.worldToLocalMatrix.MultiplyPoint(transformToKeepRelativeRotationTo.position);
+			upVectorAdjusted = upVector;
+		}
+		else
+		{
+			selfPosition = base.transform.position;
+			otherPosition = transformToKeepRelativeRotationTo.position;
+			upVectorAdjusted = upVector;
+		}
+	}
+
+	private void Start()
+	{
+		if ((bool)base.transform.parent)
+		{
+			upVector = base.transform.localToWorldMatrix.MultiplyVector(upVector);
+			upVector = base.transform.parent.localToWorldMatrix.MultiplyVector(upVector);
+			upVector = upVector.normalized;
+		}
+		localRotationStart = base.transform.localRotation;
+		PrepareData();
+		initialOffset = Quaternion.Inverse(Quaternion.LookRotation(otherPosition - selfPosition, upVectorAdjusted));
+	}
+
+	private void Update()
+	{
+		if ((bool)transformToKeepRelativeRotationTo)
+		{
+			PrepareData();
+			Quaternion quaternion = Quaternion.LookRotation(otherPosition - selfPosition, upVectorAdjusted);
+			base.transform.localRotation = quaternion * initialOffset * localRotationStart;
+		}
+	}
+}