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Actor (UT)/Movement

Properties that relate to location, orientation and movement.

AttachTag
see Attaching Actors
bBounce
Bounces when hits ground fast
bFixedRotationDir
Fixed direction of rotation
bRotateToDesired
Rotate to DesiredRotation
Buoyancy
Water buoyancy define values
DesiredRotation
Physics will smoothly rotate actor to this rotation if bRotateToDesired.
Location
a vector giving the position of the actor in the world. Remember when setting this that the engine uses a left-handed coordinate system (see Wikipedia logo Handedness for definition & pictures).
Mass
Mass of this actor. define values
Physics
see PhysicsType for the list
Rotation
see below.
RotationRate
Change in rotation per second.
Velocity
Actor's velocity.

Rotation

Rotations are measured in unreal rotation units. A right angle is 16384.

Note that an actor's rotation can be set graphically: Setting Advanced → bDirectional to True will cause UnrealEd to display a direction arrow on the actor. It is then possible to rotate it the same way as a brush.

Quick definition of the rotation angles. Imagine you are standing at the origin, facing the positive X axis.

Pitch
Tilting forward or backward, dipping on the X axis.
Roll
Wobbling from side to side, dipping on the Y axis.
Yaw
Turning from left to right.

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