Oolite JavaScript Reference: Entity

The Entity class represents an object in the game universe – Vessels, Stations and CelestialBodys are common types of entity. Note that these more specific types have additional properties and methods.

Universal IDs

Every Entity has an unique universal ID. All Oolite-provided functions which take an Entity as an argument may also be passed an integer representing the Entity’s ID.

Properties

ID

ID [read-only integer]

The universal ID of the entity.

position

position [read-only Vector]

The position of the entity in system co-ordinates.

See Also: setPosition()

velocity

velocity [read-only Vector]

The velocity of the entity in system units (nominal metres) per second.

speed

speed [read-only double]

The speed of the entity in system units (nominal metres) per second.

entity.speed() is equivalent to entity.velocity().magnitude().

orientation

orientation [read-only Quaternion]

The spacial orientation of the entity.

See Also: setOrientation()

heading

heading [read-only Vector]

The heading of the entity. This is equivalent to orientation, but ignoring the axial twist component (roll in the case of a ship).

entity.heading() is equivalent to entity.orientation.forwardVector();.

status

status [read-only string]

The current status of the entity (such as “STATUS_IN_FLIGHT” and “STATUS_BEING_SCOOPED”).

scanClass

scanClass [read-only string]

The current scan class of the entity (such as “CLASS_NEUTRAL” and “CLASS_CARGO”).

mass

mass [read-only double]

The mass of the entity. Currently, this is directly proportional to the volume.

owner

owner [read-only Entity]

The entity which owns this one. In the case of a subentity, the entity to which it is attached. In the case of a defense ship, the station it belongs to. In the case of a missile, the ship that launched it. There may be other uses.

energy

energy [read-write double]

The entity’s total energy; ranges from 0 to maxEnergy.

maxEnergy

maxEnergy [read-only double]

The highest permissible value of energy.

Methods

setPosition

void setPosition(vectorExpression)

Instantaneously move the entity to the specified position.

setOrientation

void setOrientation(quaternionExpression)

Instantaneously rotate the entity to the specified orientation.