Issue with nullable float

[bbdataParticipant]

Hi,

currently I’m working on actions for Master Audio, where a nullable float is in the parameters for calling PlaySound.
When I declare ‘pitch’ as ‘float?’ in my action task, node canvas crashes in a loop, error:

NullReferenceException: Object reference not set to an instance of an object
NodeCanvas.EditorUtils.GenericField (System.String name, System.Object value, System.Type t, System.Reflection.MemberInfo member) (at Assets/NodeCanvas/Core/Other/EditorUtils.cs:252)
NodeCanvas.EditorUtils.ShowAutoEditorGUI (System.Object o) (at Assets/NodeCanvas/Core/Other/EditorUtils.cs:113)
NodeCanvas.Task.DrawDefaultInspector () (at Assets/NodeCanvas/Core/Tasks/Task.cs:479)
NodeCanvas.Task.OnTaskInspectorGUI () (at Assets/NodeCanvas/Core/Tasks/Task.cs:474)
NodeCanvas.Task.ShowInspectorGUI (Boolean showTitlebar) (at Assets/NodeCanvas/Core/Tasks/Task.cs:463)
NodeCanvas.ActionList.ShowNestedActionsGUI () (at Assets/NodeCanvas/Core/Tasks/ActionList.cs:278)
NodeCanvas.StateMachines.FSMActionState.OnNodeInspectorGUI () (at Assets/NodeCanvas/Systems/FSM/FSMActionState.cs:78)
NodeCanvas.Node.ShowNodeInspectorGUI () (at Assets/NodeCanvas/Core/Graph/Node.cs:894)
NodeCanvas.Graph.ShowInspectorGUI () (at Assets/NodeCanvas/Core/Graph/Graph.cs:1006)
NodeCanvas.Graph.ShowGraphControls () (at Assets/NodeCanvas/Core/Graph/Graph.cs:855)
NodeCanvasEditor.GraphEditor.OnGUI () (at Assets/NodeCanvas/Core/Editor/GraphEditor.cs:175)
System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono-runtime-and-classlibs/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:222)

Code:

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using UnityEngine; using NodeCanvas.Variables;   namespace NodeCanvas.Actions{   [Category("Audio")] [AgentType(typeof(Transform))]   public class MaPlaySound : ActionTask {   public string soundGroupName; public float volumePercentage = 1f; public float? pitch = null; public float delaySoundTime = 0f; public string variationName = null;   ...

Without this float? the action work, so what to do?

[GavalakisKeymaster]

Hello,

Sorry for the late reply. I was on a trip 🙂

I don’t know why you want to use a nullable float for pitch, but I don’t get an error for using one. Are you using the latest NC version 1.5.8?

By the way, a nullable float will not show up for inspection as well as it won’t be serialized. To avoid the GUI error if you do use some older version, you could simply make it private or add [HideInInspector] on top of it if you do want to leave it public for some reason.

Cheers!

[Author]

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