Tennis#

../../../_images/atari_tennis.gif

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

Import

from pettingzoo.atari import tennis_v3

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)

../../../_images/atari_tennis_aec.svg

A competitive game of positioning and prediction.

Goal: Get the ball past your opponent. Don’t let the ball get past you.

When a point is scored (by the ball exiting the area), you get +1 reward and your opponent gets -1 reward. Unlike normal tennis matches, the number of games won is not directly rewarded.

Serves are timed: If the player does not serve within 3 seconds of receiving the ball, they receive -1 points, and the timer resets. This prevents one player from indefinitely stalling the game, but also means it is no longer a purely zero sum game.

Official tennis manual

Environment parameters#

Environment parameters are common to all Atari environments and are described in the base Atari documentation .

Action Space#

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

Action

Behavior

0

No operation

1

Fire

2

Move up

3

Move right

4

Move left

5

Move down

6

Move upright

7

Move upleft

8

Move downright

9

Move downleft

10

Fire up

11

Fire right

12

Fire left

13

Fire down

14

Fire upright

15

Fire upleft

16

Fire downright

17

Fire downleft

Version History#

  • v3: Minimal Action Space (1.18.0)

  • v2: No action timer (1.9.0)

  • v1: Breaking changes to entire API (1.4.0)

  • v0: Initial versions release (1.0.0)