path: root/src/display/mod.rs

pub mod color;
pub mod draw_box;
pub mod utils;
pub mod viewport;
use crate::entities::entity::Entity;
use crate::types::Neighbors;
use crate::types::Positioned;
pub use draw_box::{make_box, BoxStyle};
use std::io::{self, Write};
use termion::{clear, cursor, style};
pub use viewport::Viewport;

pub fn clear<T: Write>(out: &mut T) -> io::Result<()> {
    write!(out, "{}{}{}", clear::All, style::Reset, cursor::Goto(1, 1))
}

pub trait Draw: Positioned {
    /// Draw this entity, assuming the character is already at the correct
    /// position
    fn do_draw(&self, out: &mut Write) -> io::Result<()>;
}

impl<T: Draw> Draw for &T {
    fn do_draw(&self, out: &mut Write) -> io::Result<()> {
        (**self).do_draw(out)
    }
}

impl<T: Draw> Draw for Box<T> {
    fn do_draw(&self, out: &mut Write) -> io::Result<()> {
        (**self).do_draw(out)
    }
}

pub trait DrawWithNeighbors: Positioned {
    #[allow(clippy::borrowed_box)]
    fn do_draw_with_neighbors<'a, 'b>(
        &'a self,
        out: &'b mut Write,
        neighbors: &'a Neighbors<Vec<&'a Box<dyn Entity>>>,
    ) -> io::Result<()>;
}

impl<T: Draw> DrawWithNeighbors for T {
    fn do_draw_with_neighbors<'a, 'b>(
        &'a self,
        out: &'b mut Write,
        _neighbors: &'a Neighbors<Vec<&'a Box<dyn Entity>>>,
    ) -> io::Result<()> {
        self.do_draw(out)
    }
}