5.1 KiB
title
| title |
|---|
| Jamesbond |
Jamesbond
:width: 120px
:name: Jamesbond
This environment is part of the Atari environments. Please read that page first for general information.
Description
Your mission is to control Mr. Bond's specially designed multipurpose craft to complete a variety of missions.The craft moves forward with a right motion and slightly back with a left motion.An up or down motion causes the craft to jump or dive.You can also fire by either lobbing a bomb to the bottom of the screen or firing a fixed angle shot to the top of the screen.
For a more detailed documentation, see the AtariAge page
Actions
Jamesbond has the action space Discrete(18) with the table below lists the meaning of each action's meanings.
As Jamesbond 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 |
|---|---|
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 |
Observations
Atari environment have two possible observation types, the observation space is listed below. See variants section for the type of observation used by each environment id.
obs_type="rgb" -> observation_space=Box(0, 255, (210, 160, 3), np.uint8)obs_type="ram" -> observation_space=Box(0, 255, (128,), np.uint8)
Additionally, obs_type="grayscale" cause the environment return a grayscale version of the rgb array for observations with the observation space being Box(0, 255, (210, 160), np.uint8)
Rewards
The game ends when you complete the last mission or when you lose the last craft. In either case, you'll receive your final score. There will be a rating based on your score. The highest rating in NOVICE is 006. The highest rating in AGENT is 007. For a more detailed documentation, consult the AtariAge page.
Variants
Jamesbond 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= |
|---|---|---|---|
| Jamesbond-v0 | "rgb" |
(2, 5) |
0.25 |
| Jamesbond-ram-v0 | "ram" |
(2, 5) |
0.25 |
| Jamesbond-ramDeterministic-v0 | "ram" |
4 |
0.25 |
| Jamesbond-ramNoFrameskip-v0 | "ram" |
1 |
0.25 |
| JamesbondDeterministic-v0 | "rgb" |
4 |
0.25 |
| JamesbondNoFrameskip-v0 | "rgb" |
1 |
0.25 |
| Jamesbond-v4 | "rgb" |
(2, 5) |
0.0 |
| Jamesbond-ram-v4 | "ram" |
(2, 5) |
0.0 |
| Jamesbond-ramDeterministic-v4 | "ram" |
4 |
0.0 |
| Jamesbond-ramNoFrameskip-v4 | "ram" |
1 |
0.0 |
| JamesbondDeterministic-v4 | "rgb" |
4 |
0.0 |
| JamesbondNoFrameskip-v4 | "rgb" |
1 |
0.0 |
| ALE/Jamesbond-v5 | "rgb" |
4 |
0.25 |
| ALE/Jamesbond-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, 1] |
0 |
[0] |
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 frameskipping was removed. The environments are now in the "ALE" namespace.
- v4: Stickiness of actions was removed
- v0: Initial versions release