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path: root/server/bot/src/algos/frank.rs
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/*
    Hurry Curry! - a game about cooking
    Copyright (C) 2025 Hurry Curry! Contributors

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, version 3 of the License only.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.

*/
use crate::{
    BotAlgo, PacketSink,
    pathfinding::{Path, find_path_to_neighbour},
};
use hurrycurry_game_core::Game;
use hurrycurry_protocol::{Message, PacketS, PlayerClass, PlayerID, glam::Vec2};
use rand::{random, seq::IndexedRandom};

pub struct Frank {
    me: PlayerID,

    sleep: f32,
    idle: f32,
    idle_dir: f32,

    target: Option<PlayerID>,
    path: Option<Path>,
}

impl Frank {
    pub fn new(me: PlayerID) -> Self {
        Self {
            me,
            idle: 0.,
            idle_dir: 0.,
            path: None,
            sleep: 0.,
            target: None,
        }
    }
}

impl BotAlgo for Frank {
    fn tick(&mut self, mut out: PacketSink, game: &Game, dt: f32) {
        let Some(player) = game.players.get(&self.me) else {
            return;
        };

        if self.sleep > 0. {
            self.sleep -= dt;
            return;
        }
        if self.idle > 0. {
            self.idle -= dt;
            self.idle_dir += self.idle.sin() * dt * (self.idle / 10.).fract() * 10.;
            out.push(PacketS::Movement {
                player: self.me,
                dir: Vec2::from_angle(self.idle_dir),
                boost: false,
                pos: None,
            });
        }

        let pos = player.movement.position;

        if let Some(target) = self.target {
            if let Some(player) = game.players.get(&target) {
                let tpos = player.movement.position;

                if let Some(path) = &mut self.path {
                    let direction = path.next_direction(pos, dt);
                    if path.is_stuck(3.) {
                        self.path = None;
                    } else if path.is_done() {
                        self.path = None;
                        if pos.distance(tpos) < 2. {
                            self.sleep = 8.;
                            self.idle = 15.;
                            out.push(PacketS::Communicate {
                                player: self.me,
                                message: Some(Message::Translation {
                                    id: format!("s.bot.frank.line.{}", random::<u32>() % 8),
                                    params: vec![Message::Text(player.name.clone())],
                                }),
                                timeout: Some(3.),
                                pin: Some(false),
                            });
                        }
                    } else {
                        out.push(PacketS::Movement {
                            player: self.me,
                            dir: direction,
                            boost: false,
                            pos: None,
                        });
                    }
                } else if let Some(path) =
                    find_path_to_neighbour(game, pos.as_ivec2(), tpos.as_ivec2())
                {
                    self.path = Some(path);
                }
            } else {
                self.target = None;
            }
        } else if let Some(target) = find_chef(game, self.me) {
            self.target = Some(target);
        }
    }
}

fn find_chef(game: &Game, me: PlayerID) -> Option<PlayerID> {
    let chefs = game
        .players
        .iter()
        .filter(|(i, p)| p.class == PlayerClass::Chef && **i != me)
        .map(|(i, _)| *i)
        .collect::<Vec<_>>();
    chefs.choose(&mut rand::rng()).copied()
}