Add API and UI for costModifier

Assets/NavMeshComponents/Editor/NavMeshLinkEditor.cs

@@ -9,6 +9,7 @@ class NavMeshLinkEditor : Editor
     {
         SerializedProperty m_AgentTypeID;
         SerializedProperty m_Area;
+        SerializedProperty m_CostModifier;
         SerializedProperty m_AutoUpdatePosition;
         SerializedProperty m_Bidirectional;
         SerializedProperty m_EndPoint;
@@ -25,6 +26,7 @@ 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");
@@ -105,6 +107,7 @@ public override void OnInspectorGUI()
             EditorGUILayout.Space();
 
             EditorGUILayout.PropertyField(m_Width);
+            EditorGUILayout.PropertyField(m_CostModifier);
             EditorGUILayout.PropertyField(m_AutoUpdatePosition);
             EditorGUILayout.PropertyField(m_Bidirectional);
 

Assets/NavMeshComponents/Scripts/NavMeshLink.cs

@@ -24,6 +24,10 @@ public class NavMeshLink : MonoBehaviour
         float m_Width;
         public float width { get { return m_Width; } set { m_Width = value; UpdateLink(); } }
 
+        [SerializeField]
+        int m_CostModifier = -1;
+        public int costModifier { get { return m_CostModifier; } set { m_CostModifier = value; UpdateLink(); } }
+
         [SerializeField]
         bool m_Bidirectional = true;
         public bool bidirectional { get { return m_Bidirectional; } set { m_Bidirectional = value; UpdateLink(); } }
@@ -111,7 +115,7 @@ void AddLink()
             link.startPosition = m_StartPoint;
             link.endPosition = m_EndPoint;
             link.width = m_Width;
-            link.costModifier = -1.0f;
+            link.costModifier = m_CostModifier;
             link.bidirectional = m_Bidirectional;
             link.area = m_Area;
             link.agentTypeID = m_AgentTypeID;