A Battlesnake written in rust.

Tiles to avoid (walls, larger snakes) are given a positive value, while tiles to go towards (food, smaller snakes) are given a negative value. Each tile influences all other tiles according to tile score = sum(value / (radius^2)), similar to the equation for gravity g = (Gmm) / (radius^2). The snake then "falls" towards the lowest scored tile beside its head. This snake probably won't do very well, but it was a fun experiment.