C# API differences to GDScript¶

This is a (incomplete) list of API differences between C# and GDScript.

General differences¶

As explained in the C# basics, C# generally uses PascalCase instead of the snake_case used in GDScript and C++.

Global scope¶

Global functions and some constants had to be moved to classes, since C# does not allow declaring them in namespaces. Most global constants were moved to their own enums.

Constants¶

In C#, only primitive types can be constant. For example, the TAU constant is replaced by the Mathf.Tau constant, but the Vector2.RIGHT constant is replaced by the Vector2.Right read-only property. This behaves similarly to a constant, but can't be used in some contexts like switch statements.

Global enum constants were moved to their own enums. For example, ERR_* constants were moved to the Error enum.

Special cases:

GDScript	C#
`TYPE_*`	`Variant.Type` enum
`OP_*`	`Variant.Operator` enum

Math functions¶

Math global functions, like abs, acos, asin, atan and atan2, are located under Mathf as Abs, Acos, Asin, Atan and Atan2. The PI constant can be found as Mathf.Pi.

C# also provides static System.Math and System.MathF classes that may contain other useful mathematical operations.

Random functions¶

Random global functions, like rand_range and rand_seed, are located under GD. Example: GD.RandRange and GD.RandSeed.

Consider using System.Random or, if you need cryptographically strong randomness, System.Security.Cryptography.RandomNumberGenerator.

Other functions¶

Many other global functions like print and var_to_str are located under GD. Example: GD.Print and GD.VarToStr.

Exceptions:

GDScript	C#
`weakref(obj)`	`GodotObject.WeakRef(obj)`
`instance_from_id(id)`	`GodotObject.InstanceFromId(id)`
`is_instance_id_valid(id)`	`GodotObject.IsInstanceIdValid(id)`
`is_instance_valid(obj)`	`GodotObject.IsInstanceValid(obj)`

Tips¶

Sometimes it can be useful to use the using static directive. This directive allows to access the members and nested types of a class without specifying the class name.

Example:

using static Godot.GD;

public class Test
{
    static Test()
    {
        Print("Hello"); // Instead of GD.Print("Hello");
    }
}

Full list of equivalences¶

List of Godot's global scope functions and their equivalent in C#:

GDScript	C#
abs	Mathf.Abs
absf	Mathf.Abs
absi	Mathf.Abs
acos	Mathf.Acos
asin	Mathf.Asin
atan	Mathf.Atan
atan2	Mathf.Atan2
bezier_derivative	Mathf.BezierDerivative
bezier_interpolate	Mathf.BezierInterpolate
bytes_to_var	GD.BytesToVar
bytes_to_var_with_objects	GD.BytesToVarWithObjects
ceil	Mathf.Ceil
ceilf	Mathf.Ceil
ceili	Mathf.CeilToInt
clamp	Mathf.Clamp
clampf	Mathf.Clamp
clampi	Mathf.Clamp
cos	Mathf.Cos
cosh	Mathf.Cosh
cubic_interpolate	Mathf.CubicInterpolate
cubic_interpoalte_angle	Mathf.CubicInterpolateAngle
cubic_interpolate_angle_in_time	Mathf.CubicInterpolateInTime
cubic_interpolate_in_time	Mathf.CubicInterpolateAngleInTime
db_to_linear	Mathf.DbToLinear
deg_to_rad	Mathf.DegToRad
ease	Mathf.Ease
error_string	Error.ToString
exp	Mathf.Exp
floor	Mathf.Floor
floorf	Mathf.Floor
floori	Mathf.FloorToInt
fmod	operator %
fposmod	Mathf.PosMod
hash	GD.Hash
instance_from_id	GodotObject.InstanceFromId
inverse_lerp	Mathf.InverseLerp
is_equal_approx	Mathf.IsEqualApprox
is_finite	Mathf.IsFinite or float.IsFinite or double.IsFinite
is_inf	Mathf.IsInf or float.IsInfinity or double.IsInfinity
is_instance_id_valid	GodotObject.IsInstanceIdValid
is_instance_valid	GodotObject.IsInstanceValid
is_nan	Mathf.IsNaN or float.IsNaN or double.IsNaN
is_same	operator == or object.ReferenceEquals
is_zero_approx	Mathf.IsZeroApprox
lerp	Mathf.Lerp
lerp_angle	Mathf.LerpAngle
lerpf	Mathf.Lerp
linear_to_db	Mathf.LinearToDb
log	Mathf.Log
max	Mathf.Max
maxf	Mathf.Max
maxi	Mathf.Max
min	Mathf.Min
minf	Mathf.Min
mini	Mathf.Min
move_toward	Mathf.MoveToward
nearest_po2	Mathf.NearestPo2
pingpong	Mathf.PingPong
posmod	Mathf.PosMod
pow	Mathf.Pow
print	GD.Print
print_rich	GD.PrintRich