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use crossterm::cursor::MoveTo;
use crossterm::{execute, queue, Output};
use std::io::{stdout, Write};
use crate::entities::{Character, Entity, Player};
use crate::state::State;
use crate::tiling::{tile_to_str, Tile, TileGrid, TileType};
use crate::world::{apply_movement, Dungeon, Generatable, Level, Movement};
pub trait ViewPort {
fn render_state(&mut self, &State);
}
pub struct CrossTermViewPort {
xsize: usize,
ysize: usize
}
impl CrossTermViewPort {
pub fn render_level(&self) {
let mut sout = stdout();
execute!(sout, MoveTo(0, 0)).unwrap();
for (linenum, line) in self.grid.as_ref().unwrap().raw_data().iter().enumerate() {
let linestr = line.iter().map(tile_to_str).collect::<Vec<&str>>();
let mut linestr2 = String::from("");
for chr in linestr {
linestr2.push_str(chr);
}
queue!(sout, Output(linestr2), MoveTo(0, linenum as u16)).unwrap();
sout.flush().unwrap();
}
}
fn render_entity(&self, entity: &dyn Entity) {
if !entity.is_visible() || !entity.is_dirty() {
return;
}
let dirt = entity.previous_location();
let background = self.grid.as_ref().unwrap().block_at(dirt.0, dirt.1);
let mut sout = stdout();
queue!(
sout,
MoveTo(dirt.0 as u16, dirt.1 as u16),
Output(tile_to_str(background)),
MoveTo(entity.location().0 as u16, entity.location().1 as u16),
Output(tile_to_str(entity.tile()))
)
.unwrap();
sout.flush().unwrap();
}
pub fn render_entities(&self) {
for e in self.current_level().entities.iter() {
self.render_entity(&**e);
}
}
pub fn render_player(&mut self) {
self.render_entity(&self.player);
self.grid
.as_mut()
.unwrap()
.clear_fog_of_war(self.player.location(), PLAYER_SIGHT);
}
fn ui_state_position(&self) -> MoveTo {
MoveTo(0, (self.dungeon.ysize()) as u16)
}
fn ui_notification_position(&self) -> MoveTo {
MoveTo(0, (self.dungeon.ysize() + 1) as u16)
}
pub fn render_ui(&self) {
let mut sout = stdout();
queue!(sout, self.ui_state_position(), Output(self.player.stats())).unwrap();
sout.flush().unwrap();
}
pub fn notify(&self, message: String) {
let mut sout = stdout();
queue!(
sout,
self.ui_notification_position(),
Output(" ".repeat(self.dungeon.xsize())),
self.ui_notification_position(),
Output(message)
)
.unwrap();
sout.flush().unwrap();
}
pub fn ui_help(&self) {
self.notify(String::from(
"quit: q, movement{up(k), down(j), left(h), right(l)}",
))
}
}
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