Space War¶

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

Import	`from pettingzoo.atari import space_war_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	(250, 160, 3)
Observation Values	(0,255)

Space war is an competitive game where prediction and positioning are key. The players move around the map. When your opponent is hit by your bullet, you score a point. The game is similar to combat, but with a more advanced physics system where acceleration and momentum need to be taken into account. Whenever you score a point, you are rewarded +1 and your opponent is penalized -1.

Official space war 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)