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Improved visibility

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This commit is contained in:
Benjamyn Love 2022-10-31 09:16:55 +11:00
parent b56eaac0a2
commit 2917a7baa7
2 changed files with 50 additions and 41 deletions
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69
src/map.rs
View File

@ -1,6 +1,4 @@
use crate::Viewshed;
use super::{Rect, Player};
use super::{Rect};
use rltk::{RandomNumberGenerator, Rltk, RGB, Algorithm2D, Point, BaseMap};
use std::{cmp::{max, min}};
use specs::prelude::*;
@ -15,7 +13,8 @@ pub struct Map {
pub tiles : Vec::<TileType>,
pub rooms : Vec::<Rect>,
pub width : i32,
pub height : i32
pub height : i32,
pub revealed_tiles : Vec<bool>
}
impl Map {
@ -55,7 +54,8 @@ impl Map {
tiles : vec![TileType::Wall; 80*50],
rooms : Vec::new(),
width : 80,
height : 50
height : 50,
revealed_tiles : vec![false; 80*50]
};
const MAX_ROOMS: i32 = 30;
@ -142,44 +142,41 @@ impl BaseMap for Map {
pub fn draw_map(ecs: &World, ctx: &mut Rltk) {
let mut viewsheds = ecs.write_storage::<Viewshed>();
let mut players = ecs.write_storage::<Player>();
let map = ecs.fetch::<Map>();
for (_player, viewshed) in (&mut players, &mut viewsheds).join() {
let mut y = 0;
let mut x = 0;
for tile in map.tiles.iter() {
let pt = Point::new(x,y);
if viewshed.visible_tiles.contains(&pt) {
match tile {
TileType::Floor => {
ctx.set(
x,
y,
RGB::from_f32(0.5, 0.5, 0.5),
RGB::from_f32(0., 0., 0.),
rltk::to_cp437('.'),
);
}
TileType::Wall => {
ctx.set(
x,
y,
RGB::from_f32(0.0, 1.0, 0.0),
RGB::from_f32(0., 0., 0.),
rltk::to_cp437('#'),
);
}
let mut y = 0;
let mut x = 0;
for (idx, tile) in map.tiles.iter().enumerate() {
if map.revealed_tiles[idx] {
match tile {
TileType::Floor => {
ctx.set(
x,
y,
RGB::from_f32(0.5, 0.5, 0.5),
RGB::from_f32(0., 0., 0.),
rltk::to_cp437('.'),
);
}
TileType::Wall => {
ctx.set(
x,
y,
RGB::from_f32(0.0, 1.0, 0.0),
RGB::from_f32(0., 0., 0.),
rltk::to_cp437('#'),
);
}
}
x += 1;
}
x += 1;
if x > 79 {
x = 0;
y += 1;
}
}
}
}

22
src/visibility_system.rs
View File

@ -1,20 +1,32 @@
use specs::prelude::*;
use super::{Viewshed, Position, Map};
use super::{Viewshed, Position, Map, Player};
use rltk::{field_of_view, Point};
pub struct VisibilitySystem {}
impl<'a> System<'a> for VisibilitySystem {
type SystemData = ( ReadExpect<'a, Map>,
type SystemData = ( WriteExpect<'a, Map>,
Entities<'a>,
WriteStorage<'a, Viewshed>,
WriteStorage<'a, Position>);
WriteStorage<'a, Position>,
ReadStorage<'a, Player>);
fn run(&mut self, data : Self::SystemData) {
let (map, mut viewshed, pos) = data;
for (viewshed, pos) in (&mut viewshed, &pos).join() {
let (mut map, entities, mut viewshed, pos, player) = data;
for (ent, viewshed, pos) in (&entities, &mut viewshed, &pos).join() {
viewshed.visible_tiles.clear();
viewshed.visible_tiles = field_of_view(Point::new(pos.x, pos.y), viewshed.range, &*map);
viewshed.visible_tiles.retain(|p| p.x >= 0 && p.x < map.width && p.y >= 0 && p.y < map.height);
let _p : Option<&Player> = player.get(ent);
if let Some(_p) = _p {
for vis in viewshed.visible_tiles.iter() {
let idx = map.xy_idx(vis.x, vis.y);
map.revealed_tiles[idx] = true;
}
}
}
}
}