use rltk::RandomNumberGenerator; use crate::map_builders::{BuilderMap, MetaMapBuilder}; use crate::TileType; pub struct CullUnreachable {} impl MetaMapBuilder for CullUnreachable { fn build_map(&mut self, rng: &mut RandomNumberGenerator, build_data: &mut BuilderMap) { self.build(rng, build_data); } } impl CullUnreachable { #[allow(dead_code)] pub fn new() -> Box { Box::new(CullUnreachable {}) } fn build(&mut self, _rng: &mut RandomNumberGenerator, build_data: &mut BuilderMap) { let starting_pos = *build_data.starting_position.as_ref().unwrap(); let start_idx = build_data.map.xy_idx(starting_pos.x, starting_pos.y); build_data.map.populate_blocked(); let map_starts: Vec = vec![start_idx]; let dijkstra_map = rltk::DijkstraMap::new( build_data.map.width as usize, build_data.map.height as usize, &map_starts, &build_data.map, 1000.0, ); for (i, tile) in build_data.map.tiles.iter_mut().enumerate() { if *tile == TileType::Floor { let distance_to_start = dijkstra_map.map[i]; // We can't go to this tile - so we'll make it a wall if distance_to_start == f32::MAX { *tile = TileType::Wall; } } } } }