Alive

Alive()

Alive#energy

Alive#survive(environment)

Apple

Apple()

Apple#color

Apple#energy

Apple#event:beEaten

Apple#survive(environment)

Energy

Energy()

Energy#amount

Energy#unit

Environment

Environment()

Environment#event:beforeDestroy

Environment#livingThings

Environment#name

Environment#start(config)

Tree

Tree()

Tree#branches

Tree#crop(environment)

Tree#energy

Tree#survive(environment)