Inventory management focused game written in Godot / C#
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public static class NodeExtensions
{
/// <summary>
/// Similar to <see cref="Node.GetNodeOrNull{T}"/>, but throws a
/// <see cref="InvalidOperationException"/> if the node at the given
/// path does not exist, or a <see cref="InvalidCastException"/> if
/// it is not of the correct type.
/// </summary>
public static T GetNodeOrThrow<T>(this Node self, NodePath path)
where T : class
{
var result = self.GetNodeOrNull(path);
if (result == null) throw new InvalidOperationException(
$"Node at '{path}' not found");
if (result is not T resultOfType) throw new InvalidCastException(
$"Node at '{path}' is {result.GetType()}, expected {typeof(T)}");
return resultOfType;
}
/// <summary>
/// Finds the first parent of this node that is of
/// type <paramref name="T"/> or null if not found.
/// </summary>
public static T FindParentOrNull<T>(this Node self)
where T : class
{
while ((self = self.GetParent()) != null)
if (self is T result) return result;
return null;
}
/// <summary>
/// Finds the first parent of this node that is of type <paramref name="T"/>
/// or throws a <see cref="InvalidOperationException"/> if not found.
/// </summary>
public static T FindParentOrThrow<T>(this Node self)
where T : class
=> self.FindParentOrNull<T>() ?? throw new InvalidOperationException(
$"No parent node of type {typeof(T)} found in hierarchy of '{self.GetPath()}'");
/// <summary> Returns whether the current peer has authority over this node. </summary>
public static bool IsAuthority(this Node self)
=> self.Multiplayer.GetUniqueId() == self.GetMultiplayerAuthority();
}