Ice Hockey¶

This environment is part of the Atari environments. Please read that page first for general information.

Import	`from pettingzoo.atari import ice_hockey_v2`
Actions	Discrete
Parallel API	Yes
Manual Control	No
Agents	`agents= ['first_0', 'second_0']`
Agents	2
Action Shape	(1,)
Action Values	[0,17]
Observation Shape	(210, 160, 3)
Observation Values	(0,255)
Competitive game of control and timing.

When you are on offense you must pass the puck between your two players (you control the one with the puck) to get it past your opponent’s defense. On defense, you control the player directly in front of the puck. Both players must handle the rapid switches of control, while maneuvering around your opponent. If you score, you are rewarded +1, and your opponent -1.

Official ice hockey manual

Environment parameters¶

Environment parameters are common to all Atari environments and are described in the base multi-agent environment documentation.

Action Space¶

In any given turn, an agent can choose from one of 18 actions.

Value	Meaning	Value	Meaning	Value	Meaning
`0`	`NOOP`	`1`	`FIRE`	`2`	`UP`
`3`	`RIGHT`	`4`	`LEFT`	`5`	`DOWN`
`6`	`UPRIGHT`	`7`	`UPLEFT`	`8`	`DOWNRIGHT`
`9`	`DOWNLEFT`	`10`	`UPFIRE`	`11`	`RIGHTFIRE`
`12`	`LEFTFIRE`	`13`	`DOWNFIRE`	`14`	`UPRIGHTFIRE`
`15`	`UPLEFTFIRE`	`16`	`DOWNRIGHTFIRE`	`17`	`DOWNLEFTFIRE`

See environment specification to see more information on the action meaning.

Version History¶

v2: Minimal Action Space (1.18.0)
v1: Breaking changes to entire API (1.4.0)
v0: Initial versions release (1.0.0)