Add new meta files and interfaces for project structure

Assets/Samples/A_ Pathfinding Project/5.3.8/Example scenes/ExampleScripts/ObjectPlacer.cs

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+using UnityEngine;
+
+namespace Pathfinding.Examples {
+	/// <summary>Small sample script for placing obstacles</summary>
+	[HelpURL("https://arongranberg.com/astar/documentation/stable/objectplacer.html")]
+	public class ObjectPlacer : MonoBehaviour {
+		/// <summary>
+		/// GameObject to place.
+		/// When using a Grid Graph you need to make sure the object's layer is included in the collision mask in the GridGraph settings.
+		/// </summary>
+		public GameObject go;
+
+		/// <summary>Flush Graph Updates directly after placing. Slower, but updates are applied immidiately</summary>
+		public bool direct = false;
+
+		/// <summary>Issue a graph update object after placement</summary>
+		public bool issueGUOs = true;
+
+		/// <summary>Align created objects to the surface normal where it is created</summary>
+		public bool alignToSurface = false;
+
+		/// <summary>Global offset of the placed object relative to the mouse cursor</summary>
+		public Vector3 offset;
+
+		/// <summary>Randomize rotation of the placed object</summary>
+		public bool randomizeRotation = false;
+
+		float lastPlacedTime;
+
+		/// <summary>Update is called once per frame</summary>
+		void Update () {
+			// Check if P is being pressed.
+			// Don't place objects if ctrl is pressed to avoid conflicts with the pause shortcut (ctrl+shift+P)
+			if (!Input.GetKey(KeyCode.LeftControl) && (Input.GetKeyDown("p") || (Input.GetKey("p") && Time.time - lastPlacedTime > 0.3f))) {
+				PlaceObject();
+			}
+
+			if (Input.GetKeyDown("r")) {
+				RemoveObject();
+			}
+		}
+
+		public void PlaceObject () {
+			lastPlacedTime = Time.time;
+			Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
+
+			// Figure out where the ground is
+			if (Physics.Raycast(ray, out var hit, Mathf.Infinity, ~0)) {
+				Vector3 p = hit.point + offset;
+				var rot = Quaternion.identity;
+				if (alignToSurface) rot = Quaternion.LookRotation(hit.normal, Vector3.right) * Quaternion.Euler(90, 0, 0);
+				if (randomizeRotation) rot = Random.rotation;
+				GameObject obj = GameObject.Instantiate(go, p, rot) as GameObject;
+
+				if (issueGUOs) {
+					Bounds b = obj.GetComponent<Collider>().bounds;
+					GraphUpdateObject guo = new GraphUpdateObject(b);
+					AstarPath.active.UpdateGraphs(guo);
+					if (direct) {
+						AstarPath.active.FlushGraphUpdates();
+					}
+				}
+			}
+		}
+
+		public void RemoveObject () {
+			Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
+
+			// Check what object is under the mouse cursor
+			if (Physics.Raycast(ray, out var hit, Mathf.Infinity)) {
+				// Ignore ground and triggers
+				if (hit.collider.isTrigger || hit.transform.gameObject.name == "Ground") return;
+
+				Bounds b = hit.collider.bounds;
+				Destroy(hit.collider);
+				Destroy(hit.collider.gameObject);
+
+				if (issueGUOs) {
+					GraphUpdateObject guo = new GraphUpdateObject(b);
+					AstarPath.active.UpdateGraphs(guo);
+					if (direct) {
+						AstarPath.active.FlushGraphUpdates();
+					}
+				}
+			}
+		}
+	}
+}