Binding of Isaac - Afterbirth+ Lua Reference/Guide

### - r -

- R : KColor
- Radius : EntityLaser
- RadiusMultiplier : EntityBomb
- ReducedSpawnRate : GridEntityPoop
- Ref : EntityPtr
- RenderZOffset : Entity
- ReviveTimer : GridEntityPoop
- RNG : GridEntity
- RO : KColor
- RoomClearCount : EntityFamiliar
- Rotation : EntityEffect , EntityKnife , EntityTear , Sprite
- RotationDegrees : EntityLaser
- RotationDelay : EntityLaser
- RotationOffset : EntityKnife
- RotationSpd : EntityLaser
- RubbleAnim : GridEntityRock