80 lines
2.2 KiB
Rust
80 lines
2.2 KiB
Rust
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use rltk::RandomNumberGenerator;
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use crate::map_builders::{BuilderMap, MetaMapBuilder};
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use crate::{Position, TileType};
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#[allow(dead_code)]
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pub enum XStart {
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Left,
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Center,
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Right,
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}
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#[allow(dead_code)]
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pub enum YStart {
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Top,
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Center,
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Bottom,
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}
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pub struct AreaStartingPosition {
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x: XStart,
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y: YStart,
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}
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impl MetaMapBuilder for AreaStartingPosition {
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fn build_map(&mut self, rng: &mut RandomNumberGenerator, build_data: &mut BuilderMap) {
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self.build(rng, build_data);
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}
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}
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impl AreaStartingPosition {
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#[allow(dead_code)]
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pub fn new(x: XStart, y: YStart) -> Box<AreaStartingPosition> {
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Box::new(AreaStartingPosition { x, y })
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}
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fn build(&mut self, _rng: &mut RandomNumberGenerator, build_data: &mut BuilderMap) {
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let seed_x = match self.x {
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XStart::Left => 1,
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XStart::Center => build_data.map.width / 2,
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XStart::Right => build_data.map.width - 2,
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};
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let seed_y = match self.y {
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YStart::Top => 1,
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YStart::Center => build_data.map.height / 2,
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YStart::Bottom => build_data.map.height - 2,
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};
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let mut available_floors: Vec<(usize, f32)> = Vec::new();
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for (idx, tiletype) in build_data.map.tiles.iter().enumerate() {
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if *tiletype == TileType::Floor {
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available_floors.push((
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idx,
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rltk::DistanceAlg::PythagorasSquared.distance2d(
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rltk::Point::new(
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idx as i32 % build_data.map.width,
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idx as i32 / build_data.map.width,
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),
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rltk::Point::new(seed_x, seed_y),
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),
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));
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}
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}
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if available_floors.is_empty() {
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panic!("No valid floors to start on");
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}
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available_floors.sort_by(|a, b| a.1.partial_cmp(&b.1).unwrap());
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let start_x = available_floors[0].0 as i32 % build_data.map.width;
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let start_y = available_floors[0].0 as i32 / build_data.map.width;
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build_data.starting_position = Some(Position {
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x: start_x,
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y: start_y,
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});
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}
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}
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