Joust#

../../../_images/atari_joust.gif

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

Import

from pettingzoo.atari import joust_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_joust_aec.svg

Mixed sum game involving scoring points in an unforgiving world. Careful positioning, timing, and control is essential, as well as awareness of your opponent.

In Joust, you score points by hitting the opponent and NPCs when you are above them. If you are below them, you lose a life. In a game, there are a variety of waves with different enemies and different point scoring systems. However, expect that you can earn around 3000 points per wave.

Official joust 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: Breaking changes to entire API (1.4.0)

  • v1: Fixes to how all environments handle premature death (1.3.0)

  • v0: Initial versions release (1.0.0)