/// <summary>
/// Displays connecting lines in the scene.
/// </summary>
private void DisplayLines()
{
AiWaypointNetwork network = (AiWaypointNetwork)target;
List <Vector3> linePoints = new List <Vector3>();
Vector3? nonNullStartPosition = null;
// store non-null connections 0 -> N
for (int i = 0; i < network.Waypoints.Count; i++)
{
if (network.Waypoints[i] != null)
{
linePoints.Add(network.Waypoints[i].position);
// save reference to first non-null position so we can connect it to the end (close loop)
if (nonNullStartPosition == null)
{
nonNullStartPosition = network.Waypoints[i].position;
}
}
}
// close the loop by adding start to the end of the list
// start is at beginning and end
if (nonNullStartPosition != null)
{
linePoints.Add((Vector3)nonNullStartPosition);
}
// render our closed network to the scene view
Handles.color = Color.cyan;
Handles.DrawPolyLine(linePoints.ToArray());
}
/// <summary>
/// Displays connecting lines in the scene.
/// </summary>
private void displayLines()
{
AiWaypointNetwork network = (AiWaypointNetwork)target;
List <Vector3> linePoints = new List <Vector3>();
Vector3? nonNullStartPosition = null;
// create the labels on the scene and populate the linePoints
for (int i = 0; i < network.Waypoints.Count; i++)
{
if (network.Waypoints[i] != null)
{
Handles.color = Color.white;
GUIStyle style = new GUIStyle();
style.normal.textColor = Color.white;
Handles.Label(network.Waypoints[i].position, "P" + i, style);
linePoints.Add(network.Waypoints[i].position);
if (nonNullStartPosition == null)
{
nonNullStartPosition = network.Waypoints[i].position;
}
}
}
// close the linePoints loop to the first non-null value
if (nonNullStartPosition != null)
{
linePoints.Add((Vector3)nonNullStartPosition);
}
// connect all the non-null waypoints with lines
Handles.color = Color.cyan;
Handles.DrawPolyLine(linePoints.ToArray());
}
/// <summary>
/// Draw the waypoint labels
/// </summary>
private void DrawWaypointLabels()
{
AiWaypointNetwork network = (AiWaypointNetwork)target;
for (int index = 0; index < network.Waypoints.Count; index++)
{
if (network.Waypoints[index] != null)
{
GUIStyle style = new GUIStyle();
style.normal.textColor = Color.white;
Handles.Label(network.Waypoints[index].position, "P" + index, style);
Handles.Label(network.Waypoints[index].position, "\n" + network.Waypoints[index].name, style);
}
}
}
/// <summary>
/// Callback for what to render in the inspector.
/// </summary>
public override void OnInspectorGUI()
{
AiWaypointNetwork network = (AiWaypointNetwork)target;
network.DisplayMode = (WaypointDisplayMode)EditorGUILayout.EnumPopup("Display Mode", network.DisplayMode);
if (network.DisplayMode == WaypointDisplayMode.Paths)
{
network.PathStartIndex = EditorGUILayout.IntSlider("Start Index", network.PathStartIndex, 0, network.Waypoints.Count - 1);
network.PathEndIndex = EditorGUILayout.IntSlider("End Index", network.PathEndIndex, 0, network.Waypoints.Count - 1);
}
// display the default behavior for all non hidden serialized fields
DrawDefaultInspector();
}
/// <summary>
/// Displays nav mesh paths in the scene.
/// </summary>
private void DisplayPaths()
{
AiWaypointNetwork network = (AiWaypointNetwork)target;
WaypointEngine engine = new WaypointEngine(network);
Waypoint fromWaypoint = engine.GetWaypoint(network.PathStartIndex);
Waypoint toWaypoint = engine.GetWaypoint(network.PathEndIndex);
if (fromWaypoint != null && fromWaypoint.Transform != null && toWaypoint != null && toWaypoint.Transform != null)
{
NavMeshPath path = new NavMeshPath();
NavMesh.CalculatePath(fromWaypoint.Transform.position, toWaypoint.Transform.position, NavMesh.AllAreas, path);
Handles.color = Color.yellow;
Handles.DrawPolyLine(path.corners);
}
}
/// <summary>
/// Displays nav mesh paths in the scene.
/// </summary>
private void displayPaths()
{
AiWaypointNetwork network = (AiWaypointNetwork)target;
Transform fromTransform = network.GetStartWaypoint();
Transform toTransform = network.GetEndWaypoint();
if (fromTransform != null && toTransform != null)
{
NavMeshPath path = new NavMeshPath();
NavMesh.CalculatePath(fromTransform.position, toTransform.position, NavMesh.AllAreas, path);
Handles.color = Color.yellow;
Handles.DrawPolyLine(path.corners);
}
}
/// <summary>
/// Callback for what to render in the scene.
/// </summary>
private void OnSceneGUI()
{
AiWaypointNetwork network = (AiWaypointNetwork)target;
if (network.DisplayMode == WaypointDisplayMode.Lines)
{
displayLines();
}
else
{
displayPaths();
}
Debug.Log(network.GetFirstNonNullWaypoint(-2));
}
/// <summary>
/// Initialize.
/// </summary>
/// <param name="waypointNetwork">A waypoint network with 0 or more connected waypoints.</param>
public WaypointEngine(AiWaypointNetwork waypointNetwork)
{
// did you drag your waypoint network to the AI Entity?
Assert.IsNotNull(waypointNetwork, "Invalid waypointNetwork; it cannot be null! Check your inspector!");
// Does your network any waypoints assigned to it?
Assert.IsNotNull(waypointNetwork.Waypoints, "Invalid network.Waypoints; it cannot be null!!");
if (waypointNetwork.Waypoints.Count == 0)
{
Debug.LogWarning("The given waypoint network exists, but no waypoints have been added to it!");
}
this.waypointNetwork = waypointNetwork;
// build the contiguos network and pre-compute all the next waypoint destinations
BuildWaypoints();
}
/// <summary>
/// Callback for what to render in the scene.
/// </summary>
private void OnSceneGUI()
{
AiWaypointNetwork network = (AiWaypointNetwork)target;
DrawWaypointLabels();
switch (network.DisplayMode)
{
case WaypointDisplayMode.Lines:
DisplayLines();
break;
case WaypointDisplayMode.Paths:
DisplayPaths();
break;
default:
break;
}
}