void GenerateLinks(NavLinkGenerator gen)
{
var tri = NavMesh.CalculateTriangulation();
var edge_list = CreateEdges(tri);
foreach (var edge in edge_list)
{
edge.ComputeDerivedData();
}
if (edge_list.Count() == 0)
{
return;
}
RemoveLinks();
m_CreatedLinks.Clear();
var parent = NavEdUtil.GetNamedRoot(k_LinkRootName);
foreach (var edge in edge_list)
{
var mid = edge.GetMidpoint();
var fwd = edge.m_Normal;
var link = CreateNavLink(parent, gen, edge, mid, fwd);
if (link != null)
{
m_CreatedLinks.Add(link);
}
}
}
void RemoveLinks()
{
var nav_links = NavEdUtil.GetNamedRoot(k_LinkRootName).GetComponentsInChildren <NavMeshLink>();
foreach (var link in nav_links)
{
GameObject.DestroyImmediate(link.gameObject);
}
}
static void CreateNonWalkableVolumes(NavNonWalkableCollection collection)
{
if (collection.m_Volumes == null)
{
collection.m_Volumes = new List <NavMeshModifierVolume>();
}
ClearVolumes(collection);
var surfaces = NavEdUtil.GetAllInActiveScene <NavMeshSurface>();
var colliders = surfaces
.SelectMany(s => (s as NavMeshSurface).GetComponentsInChildren <Collider>());
var threshold_sqr = 1.5f * 1.5f;
foreach (Collider c in colliders)
{
if (c.GetComponentInChildren <NavMeshModifierVolume>() != null)
{
// Skip so we can move them out of m_Volumes to make them persistent.
Debug.Log($"[NavMesh] Skipping NonWalkable generation on {c.name} because it already has a NavMeshModifierVolume child.", c);
continue;
}
// Get unrotated bounds. Hopefully these are tighter.
var t = c.transform;
var rot = t.rotation;
var pos = t.position;
t.position = Vector3.zero;
t.rotation = Quaternion.identity;
Physics.SyncTransforms();
var b = c.bounds;
t.rotation = rot;
t.position = pos;
if (b.size.sqrMagnitude > threshold_sqr)
{
var obj = new GameObject("Block NavMesh - " + t.name);
obj.transform.SetParent(t);
obj.transform.SetPositionAndRotation(pos, rot);
obj.transform.localPosition = Vector3.zero;
obj.transform.localRotation = Quaternion.identity;
var vol = obj.AddComponent <NavMeshModifierVolume>();
vol.area = (int)NavMeshAreaIndex.NotWalkable;
var offset = 0.2f;
var size = b.size;
size -= Vector3.one * offset;
vol.size = size;
vol.center = b.center + Vector3.down * offset;
Undo.RegisterCreatedObjectUndo(obj, "Create No Walk Volumes");
collection.m_Volumes.Add(vol);
}
}
Undo.RecordObject(collection, "Create No Walk Volumes");
}
static NavNonWalkableCollection Get()
{
var root = NavEdUtil.GetNamedRoot(k_NoMeshVolumeRootName);
if (root == null)
{
root = new GameObject(k_NoMeshVolumeRootName).transform;
}
var collection = root.GetComponent <NavNonWalkableCollection>();
if (collection == null)
{
collection = root.gameObject.AddComponent <NavNonWalkableCollection>();
}
return(collection);
}
public override void OnInspectorGUI()
{
DrawDefaultInspector();
var collection = target as NavNonWalkableCollection;
using (new GUILayout.HorizontalScope())
{
if (GUILayout.Button("Clear Interior Volumes"))
{
ClearVolumes(collection);
}
if (GUILayout.Button("Create Interior Volumes"))
{
CreateNonWalkableVolumes(collection);
}
if (GUILayout.Button("Select NavMesh"))
{
Selection.objects = NavEdUtil.GetAllInActiveScene <NavMeshSurface>();
}
}
}
public override void OnInspectorGUI()
{
DrawDefaultInspector();
var gen = target as NavLinkGenerator;
m_AttachDebugToLinks = EditorGUILayout.Toggle("Attach Debug To Links", m_AttachDebugToLinks);
EditorGUILayout.HelpBox("Workflow: click these buttons from left to right. See tooltips for more info.", MessageType.None);
using (new GUILayout.HorizontalScope())
{
if (GUILayout.Button(new GUIContent("Clear All", "Delete generated Interior Volumes, NavMesh, and NavMeshLinks.")))
{
NavNonWalkableCollection_Editor.ClearNonWalkableVolumes();
NavMeshAssetManager.instance.ClearSurfaces(NavEdUtil.GetAllInActiveScene <NavMeshSurface>());
RemoveLinks();
SceneView.RepaintAll();
Debug.Log($"Removed NavMesh and NavMeshLinks from all NavMeshSurfaces.");
}
if (GUILayout.Button(new GUIContent("Create Interior Volumes", "Create NonWalkable volumes to prevent navmesh generation inside of solid objects.")))
{
NavNonWalkableCollection_Editor.CreateNonWalkableVolumes();
}
if (GUILayout.Button(new GUIContent("Bake NavMesh", "Build navmesh for all NavMeshSurface.")))
{
var surfaces = NavEdUtil.GetAllInActiveScene <NavMeshSurface>();
NavMeshAssetManager.instance.StartBakingSurfaces(surfaces);
Debug.Log($"Baked NavMesh for {surfaces.Length} NavMeshSurfaces.");
}
if (GUILayout.Button(new GUIContent("Bake Links", "Create NavMeshLinks along your navmesh edges.")))
{
GenerateLinks(gen);
Debug.Log($"Baked NavMeshLinks.");
}
if (GUILayout.Button(new GUIContent("Select NavMesh", "Selecting the navmesh makes it draw in the Scene view so you can evaluate the quality of the mesh and the links.")))
{
Selection.objects = NavEdUtil.GetAllInActiveScene <NavMeshSurface>();
}
}
EditorGUILayout.Space();
m_ShowCreatedLinks = EditorGUILayout.Foldout(m_ShowCreatedLinks, "Created Links", toggleOnLabelClick: true);
if (m_ShowCreatedLinks)
{
foreach (var entry in m_CreatedLinks)
{
using (new GUILayout.HorizontalScope())
{
EditorGUILayout.ObjectField(entry, typeof(NavMeshLink), allowSceneObjects: true);
using (new EditorGUI.DisabledScope(!m_AttachDebugToLinks))
{
if (GUILayout.Button("Draw"))
{
entry.GetComponent <NavLinkCreationReason>().Draw();
if (SceneView.lastActiveSceneView != null)
{
// Prevent losing focus (we'd lose our state).
ActiveEditorTracker.sharedTracker.isLocked = true;
var activeGameObject = Selection.activeGameObject;
activeGameObject = entry.gameObject;
EditorGUIUtility.PingObject(activeGameObject);
SceneView.lastActiveSceneView.FrameSelected();
Selection.activeGameObject = activeGameObject;
}
}
}
}
}
}
}
