Godot 4.1 C#中无法找到类相关函数的问题求助

有Unity C#基础，刚学Godot 4.1（C#/.NET 8，Mac OSX 13.5.1），搭建3D角色rig时编写代码出现函数未找到的编译错误。

原代码：

using Godot;
using System;

public partial class world_control : Node
{
    SceneTree tree;
    Node3D camera;
    Node3D head;
    
    // Called when the node enters the scene tree for the first time.
    public override void _Ready()
    {
        tree = GetTree();
        camera = tree.get_current_scene().find_child("camera", false, false);
        head = tree.get_current_scene().find_child("head", true, false);
    }

    // Called every frame. 'delta' is the elapsed time since the previous frame.
    public override void _Process(double delta)
    {
        camera.set_global_position(head.get_global_position());
        camera.set_global_rotation(head.get_global_rotation());
    }
}

报错信息：

/***/Godot/Hand_Cannon/world_control.cs(14,17): 'SceneTree' does not contain a definition for 'get_current_scene' and no accessible extension method 'get_current_scene' accepting a first argument of type 'SceneTree' could be found (are you missing a using directive or an assembly reference?)

/***/Godot/Hand_Cannon/world_control.cs(21,35): 'Node3D' does not contain a definition for 'get_global_position' and no accessible extension method 'get_global_position' accepting a first argument of type 'Node3D' could be found (are you missing a using directive or an assembly reference?)

其余错误均为类似的函数未找到问题。

问题核心是Godot的C# API遵循PascalCase命名规范，你写的get_current_scene、find_child、set_global_position等是GDScript的snake_case命名，C#中不存在这些方法。修正后的代码如下：

using Godot;
using System;

public partial class WorldControl : Node
{
    SceneTree tree;
    Node3D camera;
    Node3D head;
    
    public override void _Ready()
    {
        tree = GetTree();
        // 替换get_current_scene为CurrentScene
        camera = tree.CurrentScene.FindChild("camera", false, false) as Node3D;
        head = tree.CurrentScene.FindChild("head", true, false) as Node3D;
    }

    public override void _Process(double delta)
    {
        // 替换set_global_position为GlobalPosition，set_global_rotation为GlobalRotation
        camera.GlobalPosition = head.GlobalPosition;
        camera.GlobalRotation = head.GlobalRotation;
    }
}

额外说明：

• Godot C#中，属性（比如位置、旋转）直接通过大写开头的属性名访问/赋值，不需要get/set前缀方法，这和Unity的C#习惯一致，比如GlobalPosition对应GDScript的global_position。
• FindChild方法返回的是Node类型，需要用as Node3D做类型转换，避免编译错误。
• 建议类名也遵循PascalCase规范，比如把world_control改为WorldControl，符合C#编码习惯。

内容的提问来源于stack exchange，提问作者iWriteMehPrograms