Enum Rid

pub enum Rid {
    Valid(NonZero<u64>),
    Invalid,
}

A RID (“resource ID”) is an opaque handle that refers to a Godot Resource.

RIDs do not grant access to the resource itself. Instead, they can be used in lower-level resource APIs such as the servers. See also Godot API docs for RID.

RIDs should be largely safe to work with. Certain calls to servers may fail, however doing so will trigger an error from Godot, and will not cause any UB.

Safety caveat

In Godot 3, RID was not as safe as described here. We believe that this is fixed in Godot 4, but this has not been extensively tested as of yet. Some confirmed UB from Godot 3 does not occur anymore, but if you find anything suspicious or outright UB please open an issue.

Godot docs

RID (stable)

Variants

Valid(NonZero<u64>)

A valid RID may refer to some resource, but is not guaranteed to do so.

Invalid

An invalid RID will never refer to a resource. Internally it is represented as a 0.

Implementations

impl Rid

pub const fn new(id: u64) -> Rid

Create a new RID.

pub const fn to_u64(self) -> u64

Convert this RID into a u64. Returns 0 if it is invalid.

Godot equivalent: Rid.get_id()

pub const fn to_valid_u64(self) -> Option<u64>

Convert this RID into a u64 if it is valid. Otherwise, return None.

pub const fn is_valid(&self) -> bool

Returns true if this is a valid RID.

pub const fn is_invalid(&self) -> bool

Returns true if this is an invalid RID.

Trait Implementations

impl Clone for Rid

fn clone(&self) -> Rid

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Rid

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Display for Rid

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats Rid to match Godot’s string representation.

Example

use godot::prelude::*;
let id = Rid::new(1);
assert_eq!(format!("{}", id), "RID(1)");

impl FromGodot for Rid

fn try_from_godot(via: <Rid as GodotConvert>::Via) -> Result<Rid, ConvertError>

Converts the Godot representation to this type, returning Err on failure.

fn from_godot(via: Self::Via) -> Self

⚠️ Converts the Godot representation to this type.

fn try_from_variant(variant: &Variant) -> Result<Self, ConvertError>

Performs the conversion from a Variant, returning Err on failure.

fn from_variant(variant: &Variant) -> Self

⚠️ Performs the conversion from a Variant.

impl GodotConvert for Rid

type Via = Rid

The type through which Self is represented in Godot.

impl Hash for Rid

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Rid

fn cmp(&self, other: &Rid) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl ParamType for Rid

fn owned_to_arg<'v>(self) -> <Rid as ParamType>::Arg<'v>

Converts an owned value to the canonical argument type, which can be passed to impl AsArg<T>.

impl PartialEq for Rid

fn eq(&self, other: &Rid) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Rid

fn partial_cmp(&self, other: &Rid) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl ToGodot for Rid

type ToVia<'v> = <Rid as GodotConvert>::Via

Target type of to_godot(), which can differ from Via for pass-by-reference types.

fn to_godot(&self) -> <Rid as ToGodot>::ToVia<'_>

Converts this type to the Godot type by reference, usually by cloning.

fn to_variant(&self) -> Variant

Converts this type to a Variant.

impl Var for Rid

fn get_property(&self) -> <Rid as GodotConvert>::Via

fn set_property(&mut self, value: <Rid as GodotConvert>::Via)

fn var_hint() -> PropertyHintInfo

Specific property hints, only override if they deviate from GodotType::property_info, e.g. for enums/newtypes.

impl ArrayElement for Rid

impl AsArg<Rid> for Rid

impl Copy for Rid

impl Eq for Rid

impl GodotType for Rid

impl StructuralPartialEq for Rid