Tiny Sleepiness Game

sleepiness.rs

use text_io::read;
use rand::random_range;

#[derive(Clone, Copy)]
struct Player {
    hp: i64,
    sleepiness: i64,
}

impl Player {
    fn new() -> Player {
        Player {
            hp: 128,
            sleepiness: 96,
        }
    }
    fn print(&self) {
        println!("HP: {}", if self.hp <= 0 { 0 } else { self.hp });
        println!("Sleepiness: {}", if self.sleepiness <= 0 { 0 } else { self.sleepiness });
        println!();
    }
    fn decrease(&mut self, matter: usize) {
        let r = random_range(1..=100);
        match matter {
            0 => {
                println!("Coffee");
                let e = if r == 1 {
                    println!("No effect!");
                    0i64
                } else if r <= 90 {
                    4i64
                } else {
                    println!("Critical hit!");
                    8i64
                };
                self.hp -= 4;
                self.sleepiness -= e;
                self.print();
            },
            1 => {
                println!("Energy Drink");
                let e = if r <= 10 {
                    println!("No effect!");
                    0i64
                } else if r <= 80 {
                    8i64
                } else {
                    println!("Critical hit!");
                    16i64
                };
                self.hp -= 12;
                self.sleepiness -= e;
                self.print();
            },
            2 => {
                println!("Drug");
                let e = if r <= 30 {
                    println!("No effect!");
                    0i64
                } else if r <= 70 {
                    12i64
                } else {
                    println!("Critical hit!");
                    24i64
                };
                self.hp -= 16;
                self.sleepiness -= e;
                self.print();
            },
            3 => {
                println!("== Coffee ==");
                println!("Effect: 4");
                println!("Damage: 4");
                println!("Critical rate: 10%");
                println!("Effective rate: 99%");
                println!("== Energy Drink ==");
                println!("Effect: 8");
                println!("Damage: 12");
                println!("Critical rate: 20%");
                println!("Effective rate: 90%");
                println!("== Drug ==");
                println!("Effect: 12");
                println!("Damage: 16");
                println!("Critical rate: 30%");
                println!("Effective rate: 70%");
                println!();
            },
            _ => (),
        }
    }
}

fn main() {
    let mut p = Player::new();
    p.print();
    while p.hp > 0 && p.sleepiness > 0 {
        println!("0) Coffee\n1) Energy Drink\n2) Drug\n3) Help\n4) Quit");
        print!("Use?: ");
        let matter: usize = read!();
        println!();
        if matter == 4 {
            println!("Quit");
            break;
        }
        p.decrease(matter);
        if p.hp <= 0 {
            println!("You Died!");
        } else if p.sleepiness <= 0 {
            println!("You Win!");
        }
    }
}