added: rudimentary grapple line renderer

Assets/Scripts/Core/Graph Tasks/DoGrapplePull.cs

@@ -20,6 +20,7 @@ namespace NodeCanvas.Tasks.Actions {
 		private Vector3 velocityOnStart;
 		private Vector3 directionOnStart;
 		private Vector3 originalDirection;
+		private Vector3 locationOnStart;
 		
 		public float speed;
 		public float minDistance;
@@ -55,9 +56,16 @@ namespace NodeCanvas.Tasks.Actions {
 		//Call EndAction() to mark the action as finished, either in success or failure.
 		//EndAction can be called from anywhere.
 		protected override void OnExecute(){
+			// Some startup stuff 
 			camera = Camera.main.transform;
 			MonoManager.current.onLateUpdate += DrawGrappleGizmo;
-			// Set the initial direction
+			MonoManager.current.onLateUpdate += UpdateLineRenderer;
+			
+			// Add the renderer
+			agent.gameObject.AddComponent<LineRenderer>();
+			
+			// Set original direction and locoation
+			locationOnStart = agent.transform.position;
 			directionOnStart = agent.transform.position.DirectionTo(grapplePoint.value);
 			
 			// Get the current move direction
@@ -174,6 +182,7 @@ namespace NodeCanvas.Tasks.Actions {
 			agent.SetNewGravity(finalDirection.y);
 			agent.SmoothToSpeed(speed, 25f * Time.deltaTime);
 			
+
 			// Calculate dot products for using to end the action
 			float xzDot = Vector3.Dot(-directionOnStart.Flatten(null, 0).normalized, -directionToPoint.Flatten(null, 0).normalized);
 			float yDot = Vector3.Dot( // This one has to be rotated around the XZ
@@ -250,6 +259,23 @@ namespace NodeCanvas.Tasks.Actions {
 			return targetSwingDirection.normalized;
 		}
 
+		public void UpdateLineRenderer(){
+			// Update the Line Renderer
+			var lr = agent.GetComponent<LineRenderer>();
+
+			lr.positionCount = 2;
+			
+			// Very shoddy position setting
+			lr.SetPositions(new []{
+				agent.transform.position, 
+				grapplePoint.value}
+			);
+			
+			lr.startWidth = .1f;
+			lr.endWidth = .1f;
+
+		}
+
 		public void DrawGrappleGizmo(){
 			// Destination gizmos
 			using (Draw.WithColor(Color.blue)){
@@ -320,7 +346,6 @@ namespace NodeCanvas.Tasks.Actions {
 					Draw.SolidTriangle(vertArrowUpPosition + camera.rotation * Vector3.left/4, vertArrowUpPosition + Vector3.up/2, vertArrowUpPosition + camera.rotation * Vector3.right/4);
 				} else {
 					Draw.SolidTriangle(vertArrowDownPosition + camera.rotation * Vector3.left/4, vertArrowDownPosition + Vector3.down/2, vertArrowDownPosition + camera.rotation * Vector3.right/4);
-
 				}
 			}		
 		}
@@ -328,6 +353,9 @@ namespace NodeCanvas.Tasks.Actions {
 		//Called when the task is disabled.
 		protected override void OnStop() {
 			MonoManager.current.onLateUpdate -= DrawGrappleGizmo;
+			MonoManager.current.onLateUpdate -= UpdateLineRenderer;
+
+			GameObject.Destroy(agent.gameObject.GetComponent<LineRenderer>());
 		}
 
 		//Called when the task is paused.