328 lines
10 KiB
Rust
328 lines
10 KiB
Rust
use std::collections::{HashMap, HashSet};
|
|
|
|
use bevy::prelude::*;
|
|
use coord_2d::{Coord, Size};
|
|
use derive_more::{Deref, DerefMut};
|
|
use shadowcast::{vision_distance, Context, InputGrid};
|
|
|
|
use crate::{
|
|
bevy_rapier2d::prelude::*,
|
|
core::{Angle, Coordinates, Player, PointLike},
|
|
log::Log,
|
|
map::{ITileType, Map, MapConfig},
|
|
};
|
|
|
|
#[derive(Clone, Copy, Debug, Default, Reflect)]
|
|
#[reflect(Component)]
|
|
pub struct BlocksVisibility;
|
|
|
|
#[derive(Clone, Copy, Debug, Default, Reflect)]
|
|
#[reflect(Component)]
|
|
pub struct DontLogWhenVisible;
|
|
|
|
#[derive(Clone, Debug, Default, Deref, DerefMut, Reflect)]
|
|
#[reflect(Component)]
|
|
pub struct RevealedTiles(pub Vec<bool>);
|
|
|
|
#[derive(Clone, Debug, Eq, PartialEq)]
|
|
pub struct Viewshed {
|
|
pub visible: HashSet<(i32, i32)>,
|
|
pub range: u32,
|
|
}
|
|
|
|
impl Default for Viewshed {
|
|
fn default() -> Self {
|
|
Self {
|
|
range: 15,
|
|
visible: HashSet::new(),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Viewshed {
|
|
pub fn is_visible(&self, point: &dyn PointLike) -> bool {
|
|
self.visible.contains(&point.into())
|
|
}
|
|
}
|
|
|
|
#[derive(Clone, Debug, Default, Deref, DerefMut, Reflect)]
|
|
#[reflect(Component)]
|
|
pub struct VisibleTiles(pub Vec<bool>);
|
|
|
|
impl PointLike for Coord {
|
|
fn x(&self) -> f32 {
|
|
self.x as f32
|
|
}
|
|
|
|
fn y(&self) -> f32 {
|
|
self.y as f32
|
|
}
|
|
}
|
|
|
|
fn add_visibility_indices(
|
|
mut commands: Commands,
|
|
query: Query<(Entity, &Map), (Added<Map>, Without<VisibleTiles>, Without<RevealedTiles>)>,
|
|
map_config: Res<MapConfig>,
|
|
) {
|
|
for (entity, map) in query.iter() {
|
|
let count = map.width * map.height;
|
|
commands
|
|
.entity(entity)
|
|
.insert(VisibleTiles(vec![false; count]));
|
|
commands
|
|
.entity(entity)
|
|
.insert(RevealedTiles(vec![map_config.start_revealed; count]));
|
|
}
|
|
}
|
|
|
|
struct VisibilityGrid<'a, F>(&'a Map, F);
|
|
|
|
impl<'a, F> InputGrid for VisibilityGrid<'a, F>
|
|
where
|
|
F: Fn(Coord) -> u8,
|
|
{
|
|
type Grid = VisibilityGrid<'a, F>;
|
|
|
|
type Opacity = u8;
|
|
|
|
fn size(&self, grid: &Self::Grid) -> Size {
|
|
Size::new(grid.0.width as u32, grid.0.height as u32)
|
|
}
|
|
|
|
fn get_opacity(&self, _grid: &Self::Grid, coord: Coord) -> Self::Opacity {
|
|
self.1(coord)
|
|
}
|
|
}
|
|
|
|
fn update_viewshed(
|
|
viewer_entity: &Entity,
|
|
viewshed: &mut Viewshed,
|
|
start: &dyn PointLike,
|
|
query_pipeline: &QueryPipeline,
|
|
collider_query: &QueryPipelineColliderComponentsQuery,
|
|
map: &Map,
|
|
blocks_visibility: &Query<&BlocksVisibility>,
|
|
) {
|
|
let mut context: Context<u8> = Context::default();
|
|
let vision_distance = vision_distance::Circle::new(viewshed.range);
|
|
let coord = Coord::new(start.x_i32(), start.y_i32());
|
|
viewshed.visible.clear();
|
|
let shape = Cuboid::new(Vec2::new(0.49, 0.49).into());
|
|
let range = viewshed.range as f32;
|
|
let collider_set = QueryPipelineColliderComponentsSet(&collider_query);
|
|
let visibility_grid = VisibilityGrid(map, |coord: Coord| {
|
|
if coord.distance(start) > range {
|
|
return 255;
|
|
}
|
|
let shape_pos = (Vec2::new(coord.x as f32 + 0.5, coord.y as f32 + 0.5), 0.);
|
|
let mut opacity = 0;
|
|
query_pipeline.intersections_with_shape(
|
|
&collider_set,
|
|
&shape_pos.into(),
|
|
&shape,
|
|
InteractionGroups::all(),
|
|
Some(&|v| v.entity() != *viewer_entity && blocks_visibility.get(v.entity()).is_ok()),
|
|
|_| {
|
|
opacity = 255;
|
|
false
|
|
},
|
|
);
|
|
opacity
|
|
});
|
|
context.for_each_visible(
|
|
coord,
|
|
&visibility_grid,
|
|
&visibility_grid,
|
|
vision_distance,
|
|
255,
|
|
|coord, _directions, _visibility| {
|
|
viewshed.visible.insert((coord.x, coord.y));
|
|
},
|
|
);
|
|
}
|
|
|
|
fn update_viewshed_for_coordinates<'a>(
|
|
visible: Query<(&Coordinates, &BlocksVisibility), Changed<Coordinates>>,
|
|
mut viewers: Query<(Entity, &mut Viewshed, &Coordinates)>,
|
|
map: Query<&Map>,
|
|
query_pipeline: Res<QueryPipeline>,
|
|
collider_query: QueryPipelineColliderComponentsQuery,
|
|
blocks_visibility: Query<&BlocksVisibility>,
|
|
) {
|
|
for (coordinates, _) in visible.iter() {
|
|
for (viewer_entity, mut viewshed, start) in viewers.iter_mut() {
|
|
if coordinates.distance(start) > viewshed.range as f32 {
|
|
continue;
|
|
}
|
|
if let Ok(map) = map.single() {
|
|
update_viewshed(
|
|
&viewer_entity,
|
|
&mut viewshed,
|
|
start,
|
|
&*query_pipeline,
|
|
&collider_query,
|
|
map,
|
|
&blocks_visibility,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn update_viewshed_for_start<'a>(
|
|
mut viewers: Query<(Entity, &mut Viewshed, &Coordinates), Changed<Coordinates>>,
|
|
map: Query<&Map>,
|
|
query_pipeline: Res<QueryPipeline>,
|
|
collider_query: QueryPipelineColliderComponentsQuery,
|
|
blocks_visibility: Query<&BlocksVisibility>,
|
|
) {
|
|
for (viewer_entity, mut viewshed, start) in viewers.iter_mut() {
|
|
if let Ok(map) = map.single() {
|
|
update_viewshed(
|
|
&viewer_entity,
|
|
&mut viewshed,
|
|
start,
|
|
&*query_pipeline,
|
|
&collider_query,
|
|
map,
|
|
&blocks_visibility,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
fn remove_blocks_visibility<'a>(
|
|
removed: RemovedComponents<BlocksVisibility>,
|
|
mut viewers: Query<(Entity, &mut Viewshed, &Coordinates)>,
|
|
map: Query<&Map>,
|
|
query_pipeline: Res<QueryPipeline>,
|
|
collider_query: QueryPipelineColliderComponentsQuery,
|
|
blocks_visibility: Query<&BlocksVisibility>,
|
|
) {
|
|
for _ in removed.iter() {
|
|
for (viewer_entity, mut viewshed, start) in viewers.iter_mut() {
|
|
if let Ok(map) = map.single() {
|
|
update_viewshed(
|
|
&viewer_entity,
|
|
&mut viewshed,
|
|
start,
|
|
&*query_pipeline,
|
|
&collider_query,
|
|
map,
|
|
&blocks_visibility,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn update_visible_and_revealed_tiles(
|
|
mut map: Query<(&Map, &mut RevealedTiles, &mut VisibleTiles)>,
|
|
viewers: Query<&Viewshed, With<Player>>,
|
|
) {
|
|
for (map, mut revealed_tiles, mut visible_tiles) in map.iter_mut() {
|
|
for viewshed in viewers.iter() {
|
|
for t in visible_tiles.iter_mut() {
|
|
*t = false
|
|
}
|
|
for v in viewshed.visible.iter() {
|
|
let idx = v.to_index(map.width);
|
|
revealed_tiles[idx] = true;
|
|
visible_tiles[idx] = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn log_visible(
|
|
time: Res<Time>,
|
|
mut seen: Local<HashSet<Entity>>,
|
|
mut recently_lost: Local<HashMap<Entity, Timer>>,
|
|
query_pipeline: Res<QueryPipeline>,
|
|
collider_query: QueryPipelineColliderComponentsQuery,
|
|
mut log: Query<&mut Log>,
|
|
viewers: Query<(Entity, &Viewshed, &Coordinates, &Transform), With<Player>>,
|
|
names: Query<&Name>,
|
|
dont_log_when_visible: Query<&DontLogWhenVisible>,
|
|
) {
|
|
for timer in recently_lost.values_mut() {
|
|
timer.tick(time.delta());
|
|
}
|
|
let recently_lost_clone = recently_lost.clone();
|
|
for (entity, timer) in recently_lost_clone.iter() {
|
|
if timer.finished() {
|
|
recently_lost.remove(&entity);
|
|
}
|
|
}
|
|
let mut new_seen = HashSet::new();
|
|
if let Ok(mut log) = log.single_mut() {
|
|
for (viewer_entity, viewshed, coordinates, transform) in viewers.iter() {
|
|
let collider_set = QueryPipelineColliderComponentsSet(&collider_query);
|
|
let shape = Cuboid::new(Vec2::new(0.49, 0.49).into());
|
|
for viewed_coordinates in &viewshed.visible {
|
|
let shape_pos = (
|
|
Vec2::new(viewed_coordinates.x() + 0.5, viewed_coordinates.y() + 0.5),
|
|
0.0,
|
|
)
|
|
.into();
|
|
query_pipeline.intersections_with_shape(
|
|
&collider_set,
|
|
&shape_pos,
|
|
&shape,
|
|
InteractionGroups::all(),
|
|
Some(&|v| v.entity() != viewer_entity),
|
|
|handle| {
|
|
let entity = handle.entity();
|
|
if recently_lost.contains_key(&entity) {
|
|
new_seen.insert(entity);
|
|
recently_lost.remove(&entity);
|
|
return true;
|
|
}
|
|
if let Ok(name) = names.get(entity) {
|
|
if !seen.contains(&entity)
|
|
&& !new_seen.contains(&entity)
|
|
&& dont_log_when_visible.get(entity).is_err()
|
|
{
|
|
let name = name.to_string();
|
|
let forward = transform.local_x();
|
|
let yaw = Angle::Radians(forward.y.atan2(forward.x));
|
|
let location = coordinates
|
|
.direction_and_distance(viewed_coordinates, Some(yaw));
|
|
log.push(format!("{}: {}", name, location));
|
|
}
|
|
new_seen.insert(entity);
|
|
}
|
|
true
|
|
},
|
|
);
|
|
}
|
|
}
|
|
}
|
|
let recently_lost_entities = seen.difference(&new_seen);
|
|
for entity in recently_lost_entities {
|
|
recently_lost.insert(*entity, Timer::from_seconds(2., false));
|
|
}
|
|
*seen = new_seen;
|
|
}
|
|
|
|
pub const LOG_VISIBLE_LABEL: &str = "LOG_VISIBLE";
|
|
|
|
pub struct VisibilityPlugin;
|
|
|
|
impl Plugin for VisibilityPlugin {
|
|
fn build(&self, app: &mut AppBuilder) {
|
|
app.add_system(add_visibility_indices.system())
|
|
.add_system_to_stage(
|
|
CoreStage::PostUpdate,
|
|
update_viewshed_for_coordinates.system(),
|
|
)
|
|
.add_system_to_stage(CoreStage::PostUpdate, update_viewshed_for_start.system())
|
|
.add_system_to_stage(CoreStage::PostUpdate, remove_blocks_visibility.system())
|
|
.add_system_to_stage(
|
|
CoreStage::PostUpdate,
|
|
update_visible_and_revealed_tiles.system(),
|
|
)
|
|
.add_system_to_stage(CoreStage::PostUpdate, log_visible.system());
|
|
}
|
|
}
|