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using UnityEngine;
namespace Pathfinding.Graphs.Navmesh {
using Pathfinding.Drawing;
using Pathfinding.Util;
/// <summary>
/// Pruning of recast navmesh regions.
/// A RelevantGraphSurface component placed in the scene specifies that
/// the navmesh region it is inside should be included in the navmesh.
///
/// See: Pathfinding.RecastGraph.relevantGraphSurfaceMode
/// </summary>
[AddComponentMenu("Pathfinding/Navmesh/RelevantGraphSurface")]
[HelpURL("https://arongranberg.com/astar/documentation/stable/relevantgraphsurface.html")]
public class RelevantGraphSurface : VersionedMonoBehaviour {
private static RelevantGraphSurface root;
public float maxRange = 1;
private RelevantGraphSurface prev;
private RelevantGraphSurface next;
private Vector3 position;
public Vector3 Position {
get { return position; }
}
public RelevantGraphSurface Next {
get { return next; }
}
public RelevantGraphSurface Prev {
get { return prev; }
}
public static RelevantGraphSurface Root {
get { return root; }
}
public void UpdatePosition () {
position = transform.position;
}
void OnEnable () {
UpdatePosition();
if (root == null) {
root = this;
} else {
next = root;
root.prev = this;
root = this;
}
}
void OnDisable () {
if (root == this) {
root = next;
if (root != null) root.prev = null;
} else {
if (prev != null) prev.next = next;
if (next != null) next.prev = prev;
}
prev = null;
next = null;
}
/// <summary>
/// Updates the positions of all relevant graph surface components.
/// Required to be able to use the position property reliably.
/// </summary>
public static void UpdateAllPositions () {
RelevantGraphSurface c = root;
while (c != null) { c.UpdatePosition(); c = c.Next; }
}
public static void FindAllGraphSurfaces () {
var srf = UnityCompatibility.FindObjectsByTypeUnsorted<RelevantGraphSurface>();
for (int i = 0; i < srf.Length; i++) {
srf[i].OnDisable();
srf[i].OnEnable();
}
}
public override void DrawGizmos () {
var color = new Color(57/255f, 211/255f, 46/255f);
if (!GizmoContext.InActiveSelection(this)) color.a *= 0.4f;
Draw.Line(transform.position - Vector3.up*maxRange, transform.position + Vector3.up*maxRange, color);
}
}
}
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