Specification

Entrypoint

Every turn the step function is called.

You get a Game object as an argument containing the following fields:

• width: int - width of the game map
• height: int - height of the game map
• snake: Snake - your snake object
• opponents: Vec<Snake> - list of enemy snake objects
• apples: Vec<Point> - currently present apples on the map

The step function returns a Direction enum which the snake will be moving towards during the turn.

Example

fn step(game: Game) -> Direction {
    return game.snake.direction.rot_clockwise();
}

Direction (enum)

• UP
• DOWN
• LEFT
• RIGHT

Methods

• opposite() -> Direction - return the opposite direction (UP -> DOWN)
• rot_clockwise() -> Direction - rotate the current direction one step clockwise (UP -> RIGHT)
• rot_anti_clockwise() -> Direction - rotate the current direction counter clowksie (UP -> LEFT)
• to_string() -> String - return string representation of the Direction

Point (struct)

• x: int
• y: int

Snake (struct)

• points: Vec<Point> - list of points of the snake (first is head, last is tail)
• direction: Direction - the direction the snake is currently facing

Methods

• head() -> Direction - returns head of the snake (first element in points)
• tail() -> Direction - returns tail of the snake (last element in points)
• size() -> int - the size of the snake (same as points.size())