Properties

This page is a work in progress. It may not be complete or accurate yet.

Rojo supports most Roblox properties. This page documents all of the properties that Rojo supports, as well as their syntax when written in project files.

Property Type Support

Property Type	Example Property	Build	Live Sync	Project Files
Attributes	Instance.Attributes	✔	✔	✔
Axes	ArcHandles.Axes	✔	✔	✔
BinaryString	BinaryStringValue.Value	✔	❌	✔
Bool	Part.Anchored	✔	✔	✔
BrickColor	Part.BrickColor	✔	✔	✔
CFrame	Camera.CFrame	✔	✔	✔
Color3	Lighting.Ambient	✔	✔	✔
Color3uint8	Part.BrickColor	✔	✔	✔
ColorSequence	Beam.Color	✔	✔	✔
Content	Decal.Texture	✔	✔	✔
Enum	Part.Shape	✔	✔	✔
Faces	Handles.Faces	✔	✔	✔
Float32	Players.RespawnTime	✔	✔	✔
Float64	Sound.PlaybackLoudness	✔	✔	✔
Font	TextLabel.FontFace	✔	✔	✔
Int32	Frame.ZIndex	✔	✔	✔
Int64	Player.UserId	✔	✔	✔
MaterialColors	Terrain.MaterialColors	✔	✔	✔
NumberRange	ParticleEmitter.Lifetime	✔	✔	✔
NumberSequence	Beam.Transparency	✔	✔	✔
OptionalCoordinateFrame	Model.WorldPivotData	✔	❌	✔
PhysicalProperties	Part.CustomPhysicalProperties	✔	✔	✔
ProtectedString	ModuleScript.Source	✔	✔	✔
Ray	RayValue.Value	✔	✔	✔
Rect	ImageButton.SliceCenter	✔	✔	✔
Ref	Model.PrimaryPart	✔	✔	❌
Region3	N/A	✔	✔	❌
Region3int16	Terrain.MaxExtents	✔	✔	❌
SharedString	N/A	✔	✔	❌
String	Instance.Name	✔	✔	✔
Tags	Instance.Tags	✔	✔	✔
UDim	UIListLayout.Padding	✔	✔	✔
UDim2	Frame.Size	✔	✔	✔
Vector2	ImageLabel.ImageRectSize	✔	✔	✔
Vector2int16	N/A	✔	✔	✔
Vector3	Part.Size	✔	✔	✔
Vector3int16	TerrainRegion.ExtentsMax	✔	✔	✔
QDir	Studio.Auto-Save Path	❌	❌	❌
QFont	Studio.Font	❌	❌	❌

Properties in Project Files

Many types have an implicit and explicit format. The Project format page decribes these formats in more detail.

Attributes

Rojo defines the "Attributes" property on any instance to have the Attributes type, allowing it to be specified implicitly.

For both implicit and explicit values, the format is an object where each field represents an attribute, where the key is the name of the attribute, and the value must be an explicit value.

{
	"$properties": {
		"Attributes": {
			"Foo": {"Bool": true},
			"Bar": {"Vector3": [1.0, 2.0, 3.0]},
		},
		"AttributesSerialized": {
			"Attributes": {
				"Foo": {"Bool": true},
				"Bar": {"Vector3": [1.0, 2.0, 3.0]},
			}
		}
	}
}

The following types are supported for attribute values:

• Bool
• BrickColor
• CFrame
• Color3
• ColorSequence
• Float64
• Font
• NumberRange
• NumberSequence
• Rect
• String
• UDim
• UDim2
• Vector2
• Vector3

Axes

The Axes type cannot be specified implicitly. For explicit values, the format is a list of strings, each of which may be either "X", "Y", or "Z". Each string sets the corresponding component.

{
	"$properties": {
		"ExplicitExample1": {"Axes": ["X", "Y", "Z"]},
		"ExplicitExample2": {"Axes": ["X", "Z"]},
		"ExplicitExample3": {"Axes": []}
	}
}

BinaryString

The BinaryString type cannot be specified implicitly. For explicit values, the format is a base64-encoded string.

{
	"$properties": {
		"ExplicitExample": {"BinaryString": "SGVsbG8sIHdvcmxkIQ=="}
	}
}

Bool

For both implicit and explicit values, the format is a boolean value.

{
	"$properties": {
		"ImplicitExample": true,
		"ExplicitExample": {"Bool": false}
	}
}

BrickColor

The BrickColor type cannot be specified implicitly. For explicit values, the format is an integer representing the Number of a BrickColor.

{
	"$properties": {
		"ExplicitExample": {"BrickColor": 194}
	}
}

CFrame

For implicit values, the format is a flat list of components.

{
	"$properties": {
		"ImplicitExample": [
			1.0, 2.0, 3.0,
			4.0, 5.0, 6.0,
			7.0, 8.0, 9.0,
			10.0, 11.0, 12.0
		]
	}
}

For explicit values, the format is an object with position and orientation fields.

{
	"$properties": {
		"ExplicitExample": {
			"CFrame": {
				"position": [1.0, 2.0, 3.0],
				"orientation": [
					[4.0, 5.0, 6.0],
					[7.0, 8.0, 9.0],
					[10.0, 11.0, 12.0]
				]
			}
		}
	}
}

Color3

For both implicit and explicit values, the format is a list of R, G and B components, respectively. Each component is a float in the range [0, 1].

{
	"$properties": {
		"ImplicitExample": [
			0.6392156862745098,
			0.6352941176470588,
			0.6470588235294118
		],
		"ExplicitExample": {
			"Color3": [
				0.6392156862745098,
				0.6352941176470588,
				0.6470588235294118
			]
		}
	}
}

Color3uint8

The Color3uint8 type cannot be specified implicitly. For explicit values, the format is a list of R, G and B components, respectively. Each component is an integer in the range [0, 255].

{
	"$properties": {
		"ExplicitExample": {
			"Color3uint8": [163, 162, 165]
		}
	}
}

ColorSequence

The ColorSequence type cannot be specified implicitly. For explicit values, the format is an object with a keypoints field, which is an array of ColorSequenceKeypoints. Each ColorSequenceKeypoint is an object with time and color fields. The color field is a Color3.

{
	"$properties": {
		"ExplicitExample": {
			"ColorSequence": {
				"keypoints": [
					{
						"time": 0.0,
						"color": [1.0, 1.0, 0.5]
					},
					{
						"time": 1.0,
						"color": [0.0, 0.0, 0.0]
					}
				]
			}
		}
	}
}

Content

For both implicit and explicit values, the format is a string.

{
	"$properties": {
		"ImplicitExample": "rbxassetid://12345",
		"ExplicitExample": {"Content": "rbxassetid://12345"}
	}
}

Enum

For implicit values, the format is a string corresponding to the name of the enum item. For example:

{
	"$className": "SurfaceLight",
	"$properties": {
		"Face": "Front"
	}
}

For explicit values, the format is an integer corresponding to the value of the enum item. For example:

{
	"$className": "SurfaceLight",
	"$properties": {
		"Face": {
			"Enum": 5
		}
	}
}

Faces

The Faces type cannot be specified implicitly. For explicit values, the format is a list of strings, each of which may be either "Right", "Top", "Back", "Left", "Bottom", or "Front". Each string sets the corresponding component.

{
	"$properties": {
		"ExplicitExample1": {"Faces": ["Right", "Top", "Back", "Left", "Bottom", "Front"]},
		"ExplicitExample2": {"Faces": ["Right", "Top", "Front"]},
		"ExplicitExample3": {"Faces": []}
	}
}

Float32

For both implicit and explicit values, the format is a number.

{
	"$properties": {
		"ImplicitExample": 15.0,
		"ExplicitExample": {"Float32": 15.0}
	}
}

Float64

For both implicit and explicit values, the format is a number.

{
	"$properties": {
		"ImplicitExample": 15123.0,
		"ExplicitExample": {"Float64": 15123.0}
	}
}

Font

For both implicit and explicit values, the format is an object with family, weight, and style fields. Each component is a string.

{
	"$properties": {
		"ImplicitExample": {
			"family": "rbxasset://fonts/families/LegacyArial.json",
			"weight": "Regular",
			"style": "Normal"
		},
		"ExplicitExample": {
			"Font": {
				"family": "rbxasset://fonts/families/LegacyArial.json",
				"weight": "Regular",
				"style": "Normal"
			}
		}
	}
}

Int32

For both implicit and explicit values, the format is an integer.

{
	"$properties": {
		"ImplicitExample": 6014,
		"ExplicitExample": {"Int32": 6014}
	}
}

Int64

For both implicit and explicit values, the format is an integer.

{
	"$properties": {
		"ImplicitExample": 23491023,
		"ExplicitExample": {"Int64": 23491023}
	}
}

MaterialColors

For both implicit and explicit values, the type is an object that looks like this:

{
	"$properties": {
		"ImplicitExample": {
			"Grass": [10, 20, 30],
			"Asphalt": [40, 50, 60],
			"LeafyGrass": [255, 155, 55]
		},
		"ExplicitExample": {
			"MaterialColors": {
				"Grass": [10, 20, 30],
				"Asphalt": [40, 50, 60],
				"LeafyGrass": [255, 155, 55]
			}
		}
	}
}

The key-value pairs within the object should be Material enum items mapped to arrays of 3 integers representing the RGB of the specified color. Only the values you wish to change the defaults of need to be specified.

NumberRange

The NumberRange type cannot be specified implicitly. For explicit values, the format is a list of Min and Max components, respectively. Each component is a float.

{
	"$properties": {
		"ExplicitExample": {"NumberRange": [-36.0, 94.0]}
	}
}

NumberSequence

The NumberSequence type cannot be specified implicitly. For explicit values, the format is an object with a keypoints field, which is an array of NumberSequenceKeypoints. Each ColorSequenceKeypoint is an object with time, value, and envelope fields.

{
	"$properties": {
		"ExplicitExample": {
			"NumberSequence": {
				"keypoints": [
					{
						"time": 0.0,
						"value": 5.0,
						"envelope": 2.0
					},
					{
						"time": 1.0,
						"value": 22.0,
						"envelope": 0.0
					}
				]
			}
		}
	}
}

OptionalCoordinateFrame

TODO

PhysicalProperties

The PhysicalProperties type cannot be specified implicitly. For explicit values, there are two formats.

The constant string "Default", which represents the default PhysicalProperties value.

{
	"$properties": {
		"ExplicitExample": {"PhysicalProperties": "Default"}
	}
}

An object with fields corresponding to each component.

{
	"$properties": {
		"ExplicitExample": {
			"PhysicalProperties": {
				"density": 0.5,
				"friction": 1.0,
				"elasticity": 0.0,
				"frictionWeight": 50.0,
				"elasticityWeight": 25.0
			}
		}
	}
}

ProtectedString

For both implicit and explicit values, the format is a string.

{
	"$properties": {
		"ImplicitExample": "print('Hello world!')",
		"ExplicitExample": {"ProtectedString": "print('Hello world!')"}
	}
}

Ray

The Ray type cannot be specified implicitly. For explicit values, there are several possible formats.

An object with origin and direction fields. Each component is a Vector3.

{
	"$properties": {
		"ExplicitExample": {
			"Ray": {
				"origin": [1.0, 2.0, 3.0],
				"direction": [4.0, 5.0, 6.0]
			}
		}
	}
}

A list of Origin and Direction components, respectively. Each component is a Vector3.

{
	"$properties": {
		"ExplicitExample": {
			"Ray": [
				[1.0, 2.0, 3.0],
				[4.0, 5.0, 6.0]
			]
		}
	}
}

Rect

The Rect type cannot be specified implicitly. For explicit values, the format is a list of Min and Max components, respectively. Each component is a Vector2.

{
	"$properties": {
		"ExplicitExample": {
			"Rect": [
				[0.0, 5.0],
				[10.0, 15.0]
			]
		}
	}
}

Ref

Not implemented.

Region3

Not implemented.

Region3int16

Not implemented.

SharedString

Not implemented.

String

For both implicit and explicit values, the format is a string.

{
	"$properties": {
		"ImplicitExample": "Hello, world!",
		"ExplicitExample": {"String": "Hello, world!"}
	}
}

Tags

For both implicit and explicit values, the format is a list of strings, where each string is a tag.

{
	"$properties": {
		"ImplicitExample": ["foo", "con'fusion?!", "bar"],
		"ExplicitExample": {"Tags": ["foo", "con'fusion?!", "bar"]}
	}
}

UDim

The UDim type cannot be specified implicitly. For explicit values, the format is a list of Scale and Offset components, respectively. Scale is a float, and Offset is an integer.

{
	"$properties": {
		"ExplicitExample": {"UDim": [1.0, 32]}
	}
}

UDim2

The UDim2 type cannot be specified implicitly. For explicit values, the format is a list of X and Y components, respectively. Each component is a UDim.

{
	"$properties": {
		"ExplicitExample": {"UDim2": [[-1.0, 100], [1.0, -100]]}
	}
}

Vector2

For both implicit and explicit values, the format is a list of X and Y components, respectively. Each component is a float.

{
	"$properties": {
		"ImplicitExample": [-50.0, 50.0],
		"ExplicitExample": {"Vector2": [-50.0, 50.0]}
	}
}

Vector2int16

For both implicit and explicit values, the format is a list of X and Y components, respectively. Each component is an integer.

{
	"$properties": {
		"ImplicitExample": [-300, 300],
		"ExplicitExample": {"Vector2int16": [-300, 300]}
	}
}

Vector3

For both implicit and explicit values, the format is a list of X, Y, and Z components, respectively. Each component is an float.

{
	"$properties": {
		"ImplicitExample": [-300.0, 0.0, 1500.0],
		"ExplicitExample": {"Vector3": [-300.0, 0.0, 1500.0]}
	}
}

Vector3int16

For both implicit and explicit values, the format is a list of X, Y, and Z components, respectively. Each component is an integer.

{
	"$properties": {
		"ImplicitExample": [60, 37, -450],
		"ExplicitExample": {"Vector3int16": [60, 37, -450]}
	}
}