79 lines
2.5 KiB
Rust
79 lines
2.5 KiB
Rust
use super::{apply_horizontal_tunnel, apply_room_to_map, apply_vertical_tunnel, MapBuilder};
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use crate::spawner;
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use crate::{Map, Position, Rect, TileType};
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use rltk::RandomNumberGenerator;
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use specs::prelude::*;
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pub struct SimpleMapBuilder {}
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impl MapBuilder for SimpleMapBuilder {
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fn build_map(&mut self, new_depth: i32) -> (Map, Position) {
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let mut map = Map::new(new_depth);
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let playerpos = SimpleMapBuilder::rooms_and_corridors(&mut map);
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(map, playerpos)
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}
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fn spawn_entities(&mut self, map: &Map, ecs: &mut World, _new_depth: i32) {
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for room in map.rooms.iter().skip(1) {
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spawner::spawn_room(ecs, room, 1);
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}
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}
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}
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impl SimpleMapBuilder {
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fn rooms_and_corridors(map: &mut Map) -> Position {
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const MAX_ROOMS: i32 = 30;
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const MIN_SIZE: i32 = 6;
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const MAX_SIZE: i32 = 10;
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let mut rng = RandomNumberGenerator::new();
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for _ in 0..MAX_ROOMS {
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let w = rng.range(MIN_SIZE, MAX_SIZE);
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let h = rng.range(MIN_SIZE, MAX_SIZE);
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let x = rng.roll_dice(1, map.width - w - 1) - 1;
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let y = rng.roll_dice(1, map.height - h - 1) - 1;
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let new_room = Rect::new(x, y, w, h);
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let mut ok = true;
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for other_room in map.rooms.iter() {
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if new_room.intersect(other_room) {
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ok = false;
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}
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}
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if ok {
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apply_room_to_map(map, &new_room);
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if !map.rooms.is_empty() {
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let (new_x, new_y) = new_room.center();
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let (prev_x, prev_y) = map.rooms[map.rooms.len() - 1].center();
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if rng.range(0, 2) == 1 {
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apply_horizontal_tunnel(map, prev_x, new_x, prev_y);
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apply_vertical_tunnel(map, prev_y, new_y, new_x);
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} else {
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apply_vertical_tunnel(map, prev_y, new_y, prev_x);
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apply_horizontal_tunnel(map, prev_x, new_x, new_y);
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}
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}
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map.rooms.push(new_room);
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}
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}
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let stairs_position = map.rooms[map.rooms.len() - 1].center();
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let stairs_idx = map.xy_idx(stairs_position.0, stairs_position.1);
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map.tiles[stairs_idx] = TileType::DownStairs;
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let start_pos = map.rooms[0].center();
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Position {
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x: start_pos.0,
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y: start_pos.1,
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}
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}
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}
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