208 lines
6.0 KiB
Rust
208 lines
6.0 KiB
Rust
use std::cmp::{max, min};
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use rltk::{
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Algorithm2D, BaseMap, Console, Point, RandomNumberGenerator, Rltk,
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RGB,
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};
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use specs::prelude::*;
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use crate::component::Viewshed;
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use crate::entity::{Player, TileType};
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use crate::rect::Rect;
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#[derive(Clone)]
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pub struct Map {
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pub tiles: Vec<TileType>,
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pub rooms: Vec<Rect>,
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pub width: i32,
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pub height: i32,
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}
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impl Algorithm2D for Map {
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fn point2d_to_index(&self, pt: Point) -> i32 {
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(pt.y * self.width) + pt.x
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}
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fn index_to_point2d(&self, idx: i32) -> Point {
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Point {
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x: idx % self.width,
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y: idx / self.width,
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}
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}
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}
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impl BaseMap for Map {
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fn is_opaque(&self, idx: i32) -> bool {
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self.tiles[idx as usize] == TileType::Wall
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}
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fn get_available_exits(&self, _idx: i32) -> Vec<(i32, f32)> {
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Vec::new()
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}
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fn get_pathing_distance(&self, idx1: i32, idx2: i32) -> f32 {
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let p1 = Point::new(idx1 % self.width, idx1 / self.width);
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let p2 = Point::new(idx2 % self.width, idx2 / self.width);
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rltk::DistanceAlg::Pythagoras.distance2d(p1, p2)
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}
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}
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impl Map {
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pub fn xy_idx(&self, x: i32, y: i32) -> usize {
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(y as usize * 80) + x as usize
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}
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pub fn apply_room(&mut self, room: &Rect) {
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(room.y1 + 1..=room.y2).into_iter().for_each(|y| {
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(room.x1 + 1..=room.x2).into_iter().for_each(|x| {
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let idx = self.xy_idx(x, y);
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self.tiles[idx] = TileType::Floor;
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});
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});
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}
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pub fn apply_horiz_tunnel(&mut self, x1: i32, x2: i32, y: i32) {
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(min(x1, x2)..=max(x1, x2)).into_iter().for_each(|x| {
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let idx = self.xy_idx(x, y);
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if idx > 0
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&& idx < self.width as usize * self.height as usize
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{
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self.tiles[idx as usize] = TileType::Floor;
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}
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});
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}
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pub fn apply_vert_tunnel(&mut self, y1: i32, y2: i32, x: i32) {
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(min(y1, y2)..=max(y1, y2)).into_iter().for_each(|y| {
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let idx = self.xy_idx(x, y);
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if idx > 0
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&& idx < self.width as usize * self.height as usize
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{
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self.tiles[idx as usize] = TileType::Floor;
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}
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});
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}
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pub fn new_room_corridors() -> Self {
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let mut map = Self {
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tiles: vec![TileType::Wall; 80 * 50],
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rooms: vec![],
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width: 80,
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height: 50,
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};
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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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(0..MAX_ROOMS).into_iter().for_each(|_| {
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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, 80 - w - 1) - 1;
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let y = rng.roll_dice(1, 50 - 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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map.rooms.iter().for_each(|other| {
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if new_room.intersect(other) {
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ok = false;
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}
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});
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if ok {
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map.apply_room(&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) =
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map.rooms[map.rooms.len() - 1].center();
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if rng.range(0, 1) == 1 {
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map.apply_horiz_tunnel(prev_x, new_x, prev_y);
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map.apply_vert_tunnel(prev_y, new_y, new_x);
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} else {
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map.apply_vert_tunnel(prev_y, new_y, prev_x);
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map.apply_horiz_tunnel(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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map
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}
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}
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/*
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pub fn new_test() -> Vec<TileType> {
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let mut map = vec![TileType::Floor; 80 * 50];
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(0..80).into_iter().for_each(|x| {
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map[Map::xy_idx(x, 0)] = TileType::Wall;
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map[Map::xy_idx(x, 49)] = TileType::Wall;
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});
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(0..50).into_iter().for_each(|y| {
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map[Map::xy_idx(0, y)] = TileType::Wall;
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map[Map::xy_idx(79, y)] = TileType::Wall;
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});
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//rando-splat of walls
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let mut rng = rltk::RandomNumberGenerator::new();
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(0..400).into_iter().for_each(|_| {
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let x = rng.roll_dice(1, 79);
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let y = rng.roll_dice(1, 49);
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let idx = Map::xy_idx(x, y);
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if idx != Map::xy_idx(40, 25) {
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map[idx] = TileType::Wall;
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}
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});
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map
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}
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*/
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pub fn draw(ecs: &World, ctx: &mut Rltk) {
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let mut viewsheds = ecs.write_storage::<Viewshed>();
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let mut players = ecs.write_storage::<Player>();
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let map = ecs.fetch::<Map>();
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(&mut players, &mut viewsheds).join().into_iter().for_each(
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|(_player, viewshed)| {
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let mut y = 0;
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let mut x = 0;
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map.tiles.iter().for_each(|tile| {
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let pt = Point::new(x, y);
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if viewshed.visible_tiles.contains(&pt) {
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match tile {
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TileType::Floor => {
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ctx.set(
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x,
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y,
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RGB::from_f32(0.5, 0.5, 0.5),
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RGB::from_f32(0., 0., 0.),
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rltk::to_cp437('.'),
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);
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}
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TileType::Wall => {
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ctx.set(
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x,
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y,
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RGB::from_f32(0.0, 1.0, 0.0),
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RGB::from_f32(0., 0., 0.),
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rltk::to_cp437('#'),
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);
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}
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}
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}
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x += 1;
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if x > 79 {
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x = 0;
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y += 1;
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}
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});
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},
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);
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}
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