I have been translating my Unity project to Godot however I have stumbled into an issue: Everything looks the same as my Unity however "Node3D targetobjects " always prints "NULL". Can anyone see the problem or improve on this code? It's equivalent worked fine in Unity. Thank you in advance.

private Node3D Search()
{

objects = null;
objects = new Godot.Collections.Array{GetTree().GetNodesInGroup("target")};

var closest_distance = Mathf.Inf;

foreach (Node3D targetobjects in objects)
{


GD.Print(targetobjects);

distance = Deviant.Position.DistanceTo(targetobjects.Position);
if ( distance < closest_distance )
{
Target = targetobjects;
distance = closest_distance;


        }

}
return Target;


}

Error code

E 0:00:01:0608 Godot.Node3D player_geo.Search(): System.NullReferenceException: Object reference not set to an instance of an object.
<C# Error> System.NullReferenceException
<C# Source> player_geo.cs:1171 @ Godot.Node3D player_geo.Search()
<Stack Trace> player_geo.cs:1171 @ Godot.Node3D player_geo.Search()
player_geo.cs:250 @ void player_geo._PhysicsProcess(double)
Node.cs:2389 @ bool Godot.Node.InvokeGodotClassMethod(Godot.NativeInterop.godot_string_name&, Godot.NativeInterop.NativeVariantPtrArgs, Godot.NativeInterop.godot_variant&)
Node3D.cs:1071 @ bool Godot.Node3D.InvokeGodotClassMethod(Godot.NativeInterop.godot_string_name&, Godot.NativeInterop.NativeVariantPtrArgs, Godot.NativeInterop.godot_variant&)
player_geo_ScriptMethods.generated.cs:148 @ bool player_geo.InvokeGodotClassMethod(Godot.NativeInterop.godot_string_name&, Godot.NativeInterop.NativeVariantPtrArgs, Godot.NativeInterop.godot_variant&)
CSharpInstanceBridge.cs:24 @ Godot.NativeInterop.godot_bool Godot.Bridge.CSharpInstanceBridge.Call(nint, Godot.NativeInterop.godot_string_name, Godot.NativeInterop.godot_variant**, int, Godot.NativeInterop.godot_variant_call_error, Godot.NativeInterop.godot_variant*)

  • xyz replied to this.

  • I couldn't figure out the problem. What type was your objects variable and your target variable?

    However this works:

    private Node3D Search()
{
    Godot.Collections.Array<Node> allTargets = GetTree().GetNodesInGroup("target");
    GD.Print($"Found Targets: {allTargets.Count}");

    var closest_distance = Mathf.Inf;
    Node3D target = null;

    foreach (Node3D node in allTargets)
    {
        float distance = GlobalPosition.DistanceTo(node.GlobalPosition);
        GD.Print($"Distance: {distance}");
        if (distance < closest_distance)
        {
            target = node;
            closest_distance = distance;
        }
    }
    GD.Print($"Returning: {target} with distance of {closest_distance}");
    return target;
}

    In your code you set the distance to the closest distance. It should be the other way around else you always get Mathf.Inf as closest distance.
    In Godot there is Position (Unity: LocalPosition) and GlobalPosition (Unity: Position) btw.

    Ayudat What do you get if you do GD.Print(objects);?

        xyz Shows the two objects with the group (tag) "target" I have in the scene.
        It seems to be only "targetobjects" that refuses to grab any information.

          I couldn't figure out the problem. What type was your objects variable and your target variable?

          However this works:

          private Node3D Search()
{
    Godot.Collections.Array<Node> allTargets = GetTree().GetNodesInGroup("target");
    GD.Print($"Found Targets: {allTargets.Count}");

    var closest_distance = Mathf.Inf;
    Node3D target = null;

    foreach (Node3D node in allTargets)
    {
        float distance = GlobalPosition.DistanceTo(node.GlobalPosition);
        GD.Print($"Distance: {distance}");
        if (distance < closest_distance)
        {
            target = node;
            closest_distance = distance;
        }
    }
    GD.Print($"Returning: {target} with distance of {closest_distance}");
    return target;
}

          In your code you set the distance to the closest distance. It should be the other way around else you always get Mathf.Inf as closest distance.
          In Godot there is Position (Unity: LocalPosition) and GlobalPosition (Unity: Position) btw.

            trizZzle
            Objects is an Array

            Godot.Collections.Array objects;

            I will try your version. Also thank you very much for the Position info. I will put that in my notes.

            -UPDATE-

            Works Perfectly! Thank you very, very much! trizZzle your name is noted in my code!
            My code did not include the Node part " Godot.Collections.Array<Node>".
            Again thank you. I can continue.