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Gerard Gascón 2025-04-24 17:19:36 +02:00
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Assets/NavMeshComponents/Editor/NavMeshLinkEditor.cs Normal file
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using UnityEngine;
using UnityEngine.AI;
namespace UnityEditor.AI
{
[CanEditMultipleObjects]
[CustomEditor(typeof(NavMeshLink))]
class NavMeshLinkEditor : Editor
{
SerializedProperty m_AgentTypeID;
SerializedProperty m_Area;
SerializedProperty m_CostModifier;
SerializedProperty m_AutoUpdatePosition;
SerializedProperty m_Bidirectional;
SerializedProperty m_EndPoint;
SerializedProperty m_StartPoint;
SerializedProperty m_Width;
static int s_SelectedID;
static int s_SelectedPoint = -1;
static Color s_HandleColor = new Color(255f, 167f, 39f, 210f) / 255;
static Color s_HandleColorDisabled = new Color(255f * 0.75f, 167f * 0.75f, 39f * 0.75f, 100f) / 255;
void OnEnable()
{
m_AgentTypeID = serializedObject.FindProperty("m_AgentTypeID");
m_Area = serializedObject.FindProperty("m_Area");
m_CostModifier = serializedObject.FindProperty("m_CostModifier");
m_AutoUpdatePosition = serializedObject.FindProperty("m_AutoUpdatePosition");
m_Bidirectional = serializedObject.FindProperty("m_Bidirectional");
m_EndPoint = serializedObject.FindProperty("m_EndPoint");
m_StartPoint = serializedObject.FindProperty("m_StartPoint");
m_Width = serializedObject.FindProperty("m_Width");
s_SelectedID = 0;
s_SelectedPoint = -1;
NavMeshVisualizationSettings.showNavigation++;
}
void OnDisable()
{
NavMeshVisualizationSettings.showNavigation--;
}
static Matrix4x4 UnscaledLocalToWorldMatrix(Transform t)
{
return Matrix4x4.TRS(t.position, t.rotation, Vector3.one);
}
void AlignTransformToEndPoints(NavMeshLink navLink)
{
var mat = UnscaledLocalToWorldMatrix(navLink.transform);
var worldStartPt = mat.MultiplyPoint(navLink.startPoint);
var worldEndPt = mat.MultiplyPoint(navLink.endPoint);
var forward = worldEndPt - worldStartPt;
var up = navLink.transform.up;
// Flatten
forward -= Vector3.Dot(up, forward) * up;
var transform = navLink.transform;
transform.rotation = Quaternion.LookRotation(forward, up);
transform.position = (worldEndPt + worldStartPt) * 0.5f;
transform.localScale = Vector3.one;
navLink.startPoint = transform.InverseTransformPoint(worldStartPt);
navLink.endPoint = transform.InverseTransformPoint(worldEndPt);
}
public override void OnInspectorGUI()
{
serializedObject.Update();
NavMeshComponentsGUIUtility.AgentTypePopup("Agent Type", m_AgentTypeID);
EditorGUILayout.Space();
EditorGUILayout.PropertyField(m_StartPoint);
EditorGUILayout.PropertyField(m_EndPoint);
GUILayout.BeginHorizontal();
GUILayout.Space(EditorGUIUtility.labelWidth);
if (GUILayout.Button("Swap"))
{
foreach (NavMeshLink navLink in targets)
{
var tmp = navLink.startPoint;
navLink.startPoint = navLink.endPoint;
navLink.endPoint = tmp;
}
SceneView.RepaintAll();
}
if (GUILayout.Button("Align Transform"))
{
foreach (NavMeshLink navLink in targets)
{
Undo.RecordObject(navLink.transform, "Align Transform to End Points");
Undo.RecordObject(navLink, "Align Transform to End Points");
AlignTransformToEndPoints(navLink);
}
SceneView.RepaintAll();
}
GUILayout.EndHorizontal();
EditorGUILayout.Space();
EditorGUILayout.PropertyField(m_Width);
EditorGUILayout.PropertyField(m_CostModifier);
EditorGUILayout.PropertyField(m_AutoUpdatePosition);
EditorGUILayout.PropertyField(m_Bidirectional);
NavMeshComponentsGUIUtility.AreaPopup("Area Type", m_Area);
serializedObject.ApplyModifiedProperties();
EditorGUILayout.Space();
}
static Vector3 CalcLinkRight(NavMeshLink navLink)
{
var dir = navLink.endPoint - navLink.startPoint;
return (new Vector3(-dir.z, 0.0f, dir.x)).normalized;
}
static void DrawLink(NavMeshLink navLink)
{
var right = CalcLinkRight(navLink);
var rad = navLink.width * 0.5f;
Gizmos.DrawLine(navLink.startPoint - right * rad, navLink.startPoint + right * rad);
Gizmos.DrawLine(navLink.endPoint - right * rad, navLink.endPoint + right * rad);
Gizmos.DrawLine(navLink.startPoint - right * rad, navLink.endPoint - right * rad);
Gizmos.DrawLine(navLink.startPoint + right * rad, navLink.endPoint + right * rad);
}
[DrawGizmo(GizmoType.Selected | GizmoType.Active | GizmoType.Pickable)]
static void RenderBoxGizmo(NavMeshLink navLink, GizmoType gizmoType)
{
if (!EditorApplication.isPlaying)
navLink.UpdateLink();
var color = s_HandleColor;
if (!navLink.enabled)
color = s_HandleColorDisabled;
var oldColor = Gizmos.color;
var oldMatrix = Gizmos.matrix;
Gizmos.matrix = UnscaledLocalToWorldMatrix(navLink.transform);
Gizmos.color = color;
DrawLink(navLink);
Gizmos.matrix = oldMatrix;
Gizmos.color = oldColor;
Gizmos.DrawIcon(navLink.transform.position, "NavMeshLink Icon", true);
}
[DrawGizmo(GizmoType.NotInSelectionHierarchy | GizmoType.Pickable)]
static void RenderBoxGizmoNotSelected(NavMeshLink navLink, GizmoType gizmoType)
{
if (NavMeshVisualizationSettings.showNavigation > 0)
{
var color = s_HandleColor;
if (!navLink.enabled)
color = s_HandleColorDisabled;
var oldColor = Gizmos.color;
var oldMatrix = Gizmos.matrix;
Gizmos.matrix = UnscaledLocalToWorldMatrix(navLink.transform);
Gizmos.color = color;
DrawLink(navLink);
Gizmos.matrix = oldMatrix;
Gizmos.color = oldColor;
}
Gizmos.DrawIcon(navLink.transform.position, "NavMeshLink Icon", true);
}
public void OnSceneGUI()
{
var navLink = (NavMeshLink)target;
if (!navLink.enabled)
return;
var mat = UnscaledLocalToWorldMatrix(navLink.transform);
var startPt = mat.MultiplyPoint(navLink.startPoint);
var endPt = mat.MultiplyPoint(navLink.endPoint);
var midPt = Vector3.Lerp(startPt, endPt, 0.35f);
var startSize = HandleUtility.GetHandleSize(startPt);
var endSize = HandleUtility.GetHandleSize(endPt);
var midSize = HandleUtility.GetHandleSize(midPt);
var zup = Quaternion.FromToRotation(Vector3.forward, Vector3.up);
var right = mat.MultiplyVector(CalcLinkRight(navLink));
var oldColor = Handles.color;
Handles.color = s_HandleColor;
Vector3 pos;
if (navLink.GetInstanceID() == s_SelectedID && s_SelectedPoint == 0)
{
EditorGUI.BeginChangeCheck();
Handles.CubeHandleCap(0, startPt, zup, 0.1f * startSize, Event.current.type);
pos = Handles.PositionHandle(startPt, navLink.transform.rotation);
if (EditorGUI.EndChangeCheck())
{
Undo.RecordObject(navLink, "Move link point");
navLink.startPoint = mat.inverse.MultiplyPoint(pos);
}
}
else
{
if (Handles.Button(startPt, zup, 0.1f * startSize, 0.1f * startSize, Handles.CubeHandleCap))
{
s_SelectedPoint = 0;
s_SelectedID = navLink.GetInstanceID();
}
}
if (navLink.GetInstanceID() == s_SelectedID && s_SelectedPoint == 1)
{
EditorGUI.BeginChangeCheck();
Handles.CubeHandleCap(0, endPt, zup, 0.1f * startSize, Event.current.type);
pos = Handles.PositionHandle(endPt, navLink.transform.rotation);
if (EditorGUI.EndChangeCheck())
{
Undo.RecordObject(navLink, "Move link point");
navLink.endPoint = mat.inverse.MultiplyPoint(pos);
}
}
else
{
if (Handles.Button(endPt, zup, 0.1f * endSize, 0.1f * endSize, Handles.CubeHandleCap))
{
s_SelectedPoint = 1;
s_SelectedID = navLink.GetInstanceID();
}
}
EditorGUI.BeginChangeCheck();
pos = Handles.Slider(midPt + right * navLink.width * 0.5f, right, midSize * 0.03f, Handles.DotHandleCap, 0);
if (EditorGUI.EndChangeCheck())
{
Undo.RecordObject(navLink, "Adjust link width");
navLink.width = Mathf.Max(0.0f, 2.0f * Vector3.Dot(right, (pos - midPt)));
}
EditorGUI.BeginChangeCheck();
pos = Handles.Slider(midPt - right * navLink.width * 0.5f, -right, midSize * 0.03f, Handles.DotHandleCap, 0);
if (EditorGUI.EndChangeCheck())
{
Undo.RecordObject(navLink, "Adjust link width");
navLink.width = Mathf.Max(0.0f, 2.0f * Vector3.Dot(-right, (pos - midPt)));
}
Handles.color = oldColor;
}
[MenuItem("GameObject/AI/NavMesh Link", false, 2002)]
static public void CreateNavMeshLink(MenuCommand menuCommand)
{
var parent = menuCommand.context as GameObject;
GameObject go = NavMeshComponentsGUIUtility.CreateAndSelectGameObject("NavMesh Link", parent);
go.AddComponent<NavMeshLink>();
var view = SceneView.lastActiveSceneView;
if (view != null)
view.MoveToView(go.transform);
}
}
}