Boxing¶

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


Action Space	Discrete(18)
Observation Space	Box(0, 255, (210, 160, 3), uint8)
Import	`gymnasium.make("ALE/Boxing-v5")`

For more Boxing variants with different observation and action spaces, see the variants section.

Description¶

You fight an opponent in a boxing ring. You score points for hitting the opponent. If you score 100 points, your opponent is knocked out.

For a more detailed documentation, see the AtariAge page

Actions¶

Boxing has the action space Discrete(18) with the table below listing the meaning of each action’s meanings. As Boxing uses the full set of actions then specifying full_action_space=True will not modify the action space of the environment if passed to gymnasium.make.

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.

Observations¶

Atari environments have three possible observation types: "rgb", "grayscale" and "ram".

obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)
obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)
obs_type="grayscale" -> Box(0, 255, (210, 160), np.uint8), a grayscale version of the “rgb” type

See variants section for the type of observation used by each environment id by default.

Rewards¶

You score points by landing punches. For a more detailed documentation, see the AtariAge page.

Variants¶

Boxing has the following variants of the environment id which have the following differences in observation, the number of frame-skips and the repeat action probability.

Env-id	obs_type=	frameskip=	repeat_action_probability=
Boxing-v0	`"rgb"`	`(2, 5)`	`0.25`
Boxing-ram-v0	`"ram"`	`(2, 5)`	`0.25`
Boxing-ramDeterministic-v0	`"ram"`	`4`	`0.25`
Boxing-ramNoFrameskip-v0	`"ram"`	`1`	`0.25`
BoxingDeterministic-v0	`"rgb"`	`4`	`0.25`
BoxingNoFrameskip-v0	`"rgb"`	`1`	`0.25`
Boxing-v4	`"rgb"`	`(2, 5)`	`0.0`
Boxing-ram-v4	`"ram"`	`(2, 5)`	`0.0`
Boxing-ramDeterministic-v4	`"ram"`	`4`	`0.0`
Boxing-ramNoFrameskip-v4	`"ram"`	`1`	`0.0`
BoxingDeterministic-v4	`"rgb"`	`4`	`0.0`
BoxingNoFrameskip-v4	`"rgb"`	`1`	`0.0`
ALE/Boxing-v5	`"rgb"`	`4`	`0.25`
ALE/Boxing-ram-v5	`"ram"`	`4`	`0.25`

Difficulty and modes¶

It is possible to specify various flavors of the environment via the keyword arguments difficulty and mode. A flavor is a combination of a game mode and a difficulty setting. The table below lists the possible difficulty and mode values along with the default values.

Available Modes	Default Mode	Available Difficulties	Default Difficulty
`[0]`	`0`	`[0, 1, 2, 3]`	`0`

Version History¶

A thorough discussion of the intricate differences between the versions and configurations can be found in the general article on Atari environments.

v5: Stickiness was added back and stochastic frame-skipping was removed. The environments are now in the “ALE” namespace.
v4: Stickiness of actions was removed
v0: Initial versions release