Riverraid v0
- Name: Riverraid-v0
- Category: Atari
- Environment Page
River Raid is a top-down shooting game with the aim of destroying enemy tankers, helicopters and jets. The player gets score for each entity destroyed. With only 4 lives and finite fuel (can be refilled in game) the player aims to maximise the total score.
Type : RGB(210, 160, 3)
Type : Discrete(18)
| Key | Action |
|---|---|
| 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 |
The action space for Riverraid is the same as for all other Atari games.
| Entity | Reward |
|---|---|
| Tankers | 30.0 |
| Helicopters | 60.0 |
| Fuel Depots | 80.0 |
| Jets | 100.0 |
| Bridges | 500.0 |
Important Points
- The bridges serve as checkpoints in the game. Losing a life will restart the game from the last crossed bridge.
- Hovering over the fuel depots slowly refills the fuel tanker.
- There is no negative reward given for losing life.
The initial few frames only show the terrain before the start line. The game begins when the agent is first visible on the screen. The agent starts with 4 lives. Each of the following result in loss of life
- Hitting the walls
- Colliding with enemy entities (tankers, helicopters etc) or bridge
- Running out of fuel
River Raid does not have any end destination or target ie it is endless. The algorithm provides same non-random, repeating terrain every time. Refer to Wikipedia for more information.