78 lines
1.8 KiB
Rust
78 lines
1.8 KiB
Rust
#![feature(proc_macro_hygiene, decl_macro)]
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#[macro_use] extern crate rocket;
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#[macro_use] extern crate rocket_contrib;
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#[macro_use] extern crate serde_derive;
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use rocket_contrib::json::Json;
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use pathfinding::grid::Grid;
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mod battlesnake;
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#[get("/")]
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fn index() -> &'static str {
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"Hello, world!"
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}
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#[get("/ping")]
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fn ping() -> &'static str {
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"OK - Pneuma online"
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}
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#[post("/begin", format = "json", data = "<msg>")]
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fn begin(msg: Json<battlesnake::SnakeRequest>) -> Json<battlesnake::StartResponse> {
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Json(battlesnake::StartResponse{
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color: "#5ce8c3".to_string(),
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head_type: "beluga".to_string(),
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tail_type: "skinny".to_string(),
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})
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}
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#[post("/move", format = "json", data = "<msg>")]
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fn make_move(msg: Json<battlesnake::SnakeRequest>) -> Json<battlesnake::MoveResponse> {
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let mut g = Grid::new(msg.board.height, msg.board.width);
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g.fill();
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for sn in &msg.board.snakes {
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for bd in &sn.body {
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g.remove_vertex((bd.x, bd.y))
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}
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}
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let target = find_target(&msg, &g);
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// do pathfinding?
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battlesnake::MoveResponse {
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move_field: "up".to_string(),
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}
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}
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fn find_target(gs: &battlesnake::SnakeRequest, g: &Grid) -> &battlesnake::Coord {
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let head = gs.you.body[0];
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if gs.you.health > 30 {
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let mut lowestScore: usize = 99999;
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let mut coord: &battlesnake::Coord;
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for food in &gs.board.food {
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let score = g.distance(&(head.x, head.y), &(food.x, food.y));
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if score < lowestScore {
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lowestScore = score;
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coord = food;
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}
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}
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return coord;
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}
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return gs.you.body.last().unwrap();
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}
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fn main() {
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rocket::ignite().mount("/", routes![
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index,
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begin,
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ping,
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]).launch();
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}
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