2048-rs

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This is a Rust implementation of the famous 2048 game which runs in the terminal.

In addition to the standard user inputs, an AI can be used to perform the moves. This AI leverages the expectiminimax algorithm to recommend the best next move at each step.

Game screenshot

Statistics

Here are the statistics of the AI with its default parameters:

| max tile reached | frequency | |-----------------:|----------:| | 2048 | 100 % | | 4096 | 100 % | | 8192 | 96 % | | 16384 | 70 % | | 32768 | 10 % |

In particular, these statistics correspond to a minimum branch probability of 0.001. Decreasing this value would lead to better performance, as more branches would be explored, but this would also take more time.

Some other hardcoded parameters can be tweaked in order to further improve the algorithm. I have not performed an exhaustive grid search, thus the parameter set is probably sub-optimal.

Installation with Cargo

bash cargo install play-2048

Then, in order to play:

bash play-2048

Installation from source

```bash

git clone https://github.com/adrienball/2048-rs.git cd 2048-rs cargo run --release ```

Usage

You can change the probability of drawing a 4 tile:

```bash

play-2048 --proba-4 0.5 ```

Or adjust the minimum branch probability of the expectiminimax search:

```bash

play-2048 --min-branch-proba 0.0001 ```

To get the list of available options, simply run:

```bash

play-2048 --help ```

License

Apache 2.0/MIT

All original work licensed under either of * Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0) * MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT) at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.