From c69fd8bf3d0978d18aeacfbd3bc87beea9bdf076 Mon Sep 17 00:00:00 2001
From: TobiMob <69400800+Tobi-Mob@users.noreply.github.com>
Date: Fri, 22 Oct 2021 09:09:41 +0200
Subject: [PATCH] FollowCamera: * Use cached collider * Detect if
 TargetCollider was removed from TargetEntity

---
 Nez.Portable/ECS/Components/FollowCamera.cs | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/Nez.Portable/ECS/Components/FollowCamera.cs b/Nez.Portable/ECS/Components/FollowCamera.cs
index ce8c50dc6..3b7af4c13 100644
--- a/Nez.Portable/ECS/Components/FollowCamera.cs
+++ b/Nez.Portable/ECS/Components/FollowCamera.cs
@@ -160,15 +160,15 @@ void UpdateFollow()
 			}
 			else
 			{
-				// make sure we have a targetCollider for CameraWindow. If we dont bail out.
-				if (_targetCollider == null)
+				// make sure we have a targetCollider for CameraWindow attached to this Entity. If we dont bail out.
+				if (_targetCollider == null || _targetCollider.Entity != _targetEntity)
 				{
 					_targetCollider = _targetEntity.GetComponent<Collider>();
 					if (_targetCollider == null)
 						return;
 				}
 
-				var targetBounds = _targetEntity.GetComponent<Collider>().Bounds;
+				var targetBounds = _targetCollider.Bounds;
 				if (!_worldSpaceDeadzone.Contains(targetBounds))
 				{
 					// x-axis
@@ -188,6 +188,12 @@ void UpdateFollow()
 
 		public void Follow(Entity targetEntity, CameraStyle cameraStyle = CameraStyle.CameraWindow)
 		{
+			if (targetEntity != _targetEntity)
+			{
+				// new entity -> invalidate cached collider
+				_targetCollider = null;
+			}
+			
 			_targetEntity = targetEntity;
 			_cameraStyle = cameraStyle;
 			var cameraBounds = Camera.Bounds;