pantheonrl.common.wrappers.HistoryQueue

class HistoryQueue(defaultelem, size)

Bases: object

Ring buffer representing the saved history for the FrameStack wrappers.

Parameters:

• defaultelem (ndarray) – The default element for an empty buffer

• size (int) – The length of the queue

Methods

add	Add the given value to the queue and return the new representation
reset	Reset the queue.

add(toadd)

Add the given value to the queue and return the new representation

Parameters:

toadd (ndarray) – The new value to add. This overrides the oldest value

Returns:

The new queue representation, where the first element is the most recently added element and the last element is the oldest

Return type:

ndarray

reset()

Reset the queue. This fills the buffer with the defaultelement.

Return type:

None