| Class | Description |
|---|---|
| Actor |
An
Actor is an entity with a color and direction that can act. |
| ActorWorld |
An
ActorWorld is occupied by actors. |
| Bug |
A
Bug is an actor that can move and turn. |
| Critter |
A
Critter is an actor that moves through its world, processing
other actors in some way and then moving to a new location. |
| Flower |
A
Flower is an actor that darkens over time. |
| Rock |
A
Rock is an actor that does nothing. |