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use crate::display::draw_box::BoxStyle;
use crate::display::utils::clone_times;
use crate::display::DrawWithNeighbors;
use crate::entities::entity::Entity;
use crate::entities::environment::Wall;
use crate::types::entity_map::EntityMap;
use crate::types::pos;
use itertools::Itertools;
use std::io;
pub mod cave_automata;
pub mod util;
pub fn level_to_entities(level: Vec<Vec<bool>>) -> EntityMap<Box<dyn Entity>> {
let mut res: EntityMap<Box<dyn Entity>> = EntityMap::new();
let xmax = level.len() as i16;
let ymax = if xmax == 0 {
0i16
} else {
level[0].len() as i16
};
let get = |mut x: i16, mut y: i16| {
if x < 0 {
x = 0;
}
if y < 0 {
y = 0;
}
if x >= xmax - 1 {
x = xmax - 1;
}
if y >= ymax - 1 {
y = ymax - 1;
}
level[x as usize][y as usize]
};
for x in 0..xmax {
for y in 0..ymax {
if get(x, y) {
// don't output walls that are surrounded on all 8 sides by
// walls
if (x == 0 || get(x - 1, y))
&& (y == 0 || get(x, y - 1))
&& (x == xmax - 1 || get(x + 1, y))
&& (y == ymax - 1 || get(x, y + 1))
&& ((x == 0 && y == 0) || get(x - 1, y - 1))
&& ((x == 0 && y == ymax - 1) || get(x - 1, y + 1))
&& ((x == xmax - 1 && y == 0) || get(x + 1, y - 1))
&& ((x == xmax - 1 && y == ymax - 1) || get(x + 1, y + 1))
{
continue;
}
res.insert(Box::new(Wall::new(
pos(y as i16, x as i16),
BoxStyle::Thin,
)));
}
}
}
res
}
pub fn draw_level<W: io::Write>(
level: Vec<Vec<bool>>,
out: &mut W,
) -> io::Result<()> {
if level.is_empty() {
return Ok(());
}
let mut lines = clone_times::<Vec<char>, Vec<Vec<char>>>(
clone_times(' ', level[0].len() as u16),
level.len() as u16,
);
let em = level_to_entities(level);
for entity in em.entities() {
let mut buf = Vec::new();
entity.do_draw_with_neighbors(
&mut buf,
&em.neighbor_entities(entity.position()),
)?;
let buf_s = std::str::from_utf8(&buf).unwrap();
if let Some(chr) = buf_s.chars().next() {
lines[entity.position().y as usize][entity.position().x as usize] =
chr;
}
}
let res = lines
.iter()
.map(|line| line.iter().collect::<String>())
.join("\n");
write!(out, "{}", res)
}
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