96 lines
2.8 KiB
Rust
96 lines
2.8 KiB
Rust
mod image_loader;
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use image_loader::*;
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use super::common::{
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generate_voronoi_spawn_regions, remove_unreachable_areas_returning_most_distant,
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};
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use super::MapBuilder;
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use crate::{spawner, Map, Position, TileType, SHOW_MAPGEN_VISUALIZER};
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use rltk::RandomNumberGenerator;
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use specs::prelude::*;
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use std::collections::HashMap;
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pub struct WaveformCollapseBuilder {
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map: Map,
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starting_position: Position,
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depth: i32,
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history: Vec<Map>,
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noise_areas: HashMap<i32, Vec<usize>>,
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}
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impl MapBuilder for WaveformCollapseBuilder {
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fn build_map(&mut self) {
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self.build();
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}
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fn spawn_entities(&mut self, ecs: &mut World) {
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for area in self.noise_areas.iter() {
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spawner::spawn_region(ecs, area.1, self.depth);
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}
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}
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fn get_map(&self) -> Map {
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self.map.clone()
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}
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fn get_starting_position(&self) -> Position {
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self.starting_position.clone()
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}
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fn get_snapshot_history(&self) -> Vec<Map> {
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self.history.clone()
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}
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fn take_snapshot(&mut self) {
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if SHOW_MAPGEN_VISUALIZER {
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let mut snapshot = self.map.clone();
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for v in snapshot.revealed_tiles.iter_mut() {
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*v = true;
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}
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self.history.push(snapshot);
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}
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}
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}
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impl WaveformCollapseBuilder {
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pub fn new(new_depth: i32) -> WaveformCollapseBuilder {
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WaveformCollapseBuilder {
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map: Map::new(new_depth),
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starting_position: Position { x: 0, y: 0 },
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depth: new_depth,
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history: Vec::new(),
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noise_areas: HashMap::new(),
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}
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}
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fn build(&mut self) {
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let mut rng = RandomNumberGenerator::new();
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self.map = load_rex_map(self.depth, &rltk::XpFile::from_resource("../resources/wfc-demo1.xp").unwrap());
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self.take_snapshot();
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// Find a starting point; start at the middle and walk left until we find an open tile
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self.starting_position = Position {
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x: self.map.width / 2,
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y: self.map.height / 2,
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};
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let mut start_idx = self.map.xy_idx(self.starting_position.x, self.starting_position.y);
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while self.map.tiles[start_idx] != TileType::Floor {
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self.starting_position.x -= 1;
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start_idx = self.map.xy_idx(self.starting_position.x, self.starting_position.y);
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}
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self.take_snapshot();
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// Find all tiles we can reach from the starting point
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let exit_tile = remove_unreachable_areas_returning_most_distant(&mut self.map, start_idx);
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self.take_snapshot();
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// Place the stairs
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self.map.tiles[exit_tile] = TileType::DownStairs;
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self.take_snapshot();
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// Now we build a noise map for use in spawning entities later
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self.noise_areas = generate_voronoi_spawn_regions(&self.map, &mut rng);
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}
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}
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