Merge branch 'visibility'

src/visibility.rs

@@ -4,14 +4,17 @@ use std::{
     marker::PhantomData,
 };
 
-use bevy::{core::FixedTimestep, prelude::*};
+use bevy::prelude::*;
 
+use bevy_rapier2d::{
+    na::{Isometry2, Vector2},
+    parry::bounding_volume::BoundingVolume,
+};
 use coord_2d::{Coord, Size};
 use shadowcast::{vision_distance, Context, InputGrid};
 
 use crate::{
     bevy_rapier2d::prelude::*,
-    commands::RunIfExistsExt,
     core::{GlobalTransformExt, Player, PointLike},
     log::Log,
     map::{Map, MapConfig, MapObstruction},
@@ -21,10 +24,6 @@ use crate::{
 #[reflect(Component)]
 pub struct DontLogWhenVisible;
 
-#[derive(Component, Clone, Debug, Default, Deref, DerefMut, Reflect)]
-#[reflect(Component)]
-struct LastCoordinates((i32, i32));
-
 #[derive(Component, Clone, Debug, Default, Deref, DerefMut, Reflect)]
 #[reflect(Component)]
 pub struct RevealedTiles(pub Vec<bool>);
@@ -53,64 +52,112 @@ impl Viewshed {
         &mut self,
         viewer_entity: &Entity,
         visible_entities: &mut VisibleEntities,
-        start: &dyn PointLike,
+        start: &GlobalTransform,
         rapier_context: &RapierContext,
         map: &Map<D>,
-        visible_query: &Query<&Visible>,
+        visible_query: &Query<(&Visible, &Collider, &GlobalTransform)>,
         obstructions_query: &Query<&MapObstruction>,
         events: &mut EventWriter<VisibilityChanged>,
-        cache: &mut HashMap<Coord, (u8, HashSet<Entity>)>,
+        cache: &mut HashMap<(i32, i32), (u8, HashSet<Entity>)>,
     ) {
+        // println!("Start");
+        let mut boxes = vec![];
+        let shape = Collider::cuboid(self.range as f32, self.range as f32);
+        rapier_context.intersections_with_shape(
+            start.translation.truncate(),
+            0.,
+            &shape,
+            QueryFilter::new().predicate(&|e| visible_query.get(e).is_ok()),
+            |entity| {
+                if let Ok((_, collider, transform)) = visible_query.get(entity) {
+                    let position = Isometry2::new(
+                        Vector2::new(transform.translation.x, transform.translation.y),
+                        0.,
+                    );
+                    // println!(
+                        // "Hit {:?}, pushing {:?}",
+                        // entity,
+                        // collider.raw.compute_aabb(&position)
+                    // );
+                    boxes.push(collider.raw.compute_aabb(&position));
+                }
+                true
+            },
+        );
         let mut context: Context<u8> = Context::default();
         let vision_distance = vision_distance::Circle::new(self.range);
-        let shape = Collider::cuboid(0.5 - f32::EPSILON, 0.5 - f32::EPSILON);
+        let shape = Collider::cuboid(0.5, 0.5);
         let mut new_visible_entities = HashSet::new();
         let size = (map.width as u32, map.height as u32);
         let visibility_grid = VisibilityGrid(
             size,
             RefCell::new(Box::new(|coord: Coord| {
                 let shape_pos = Vec2::new(coord.x as f32 + 0.5, coord.y as f32 + 0.5);
+                // println!("Checking {:?}", shape_pos);
                 if start.distance(&shape_pos) > self.range as f32 + 1. {
+                    // println!("Out of range");
                     return u8::MAX;
                 }
-                if let Some((opacity, entities)) = cache.get(&coord) {
+                let result = if let Some((opacity, coord_entities)) = cache.get(&(coord.x, coord.y))
-                    for e in entities {
+                {
-                        new_visible_entities.insert(*e);
+                    Some((*opacity, coord_entities.clone()))
-                    }
-                    if entities.contains(viewer_entity) {
-                        return 0;
                 } else {
-                        return *opacity;
+                    let position = Isometry2::new(Vector2::new(shape_pos.x, shape_pos.y), 0.);
+                    let aabb = shape.raw.compute_aabb(&position);
+                    let mut hit = false;
+                    for b in &boxes {
+                        if b.intersects(&aabb) {
+                            // println!("Hit at {:?}", b);
+                            hit = true;
+                            break;
                         }
                     }
+                    if hit {
+                        // println!("Hit test");
                         let mut opacity = 0;
-                let mut entities = HashSet::new();
+                        let mut coord_entities = HashSet::new();
                         rapier_context.intersections_with_shape(
                             shape_pos,
                             0.,
                             &shape,
                             QueryFilter::new().predicate(&|v| visible_query.get(v).is_ok()),
                             |entity| {
+                                // println!("{:?}", entity);
                                 let obstruction = obstructions_query.get(entity).is_ok();
                                 if obstruction {
-                            entities.clear();
+                                    // println!("Obstruction");
+                                    coord_entities.clear();
                                 }
-                        entities.insert(entity);
+                                coord_entities.insert(entity);
-                        if let Ok(visible) = visible_query.get(entity) {
+                                if let Ok((visible, _, _)) = visible_query.get(entity) {
                                     opacity = opacity.max(**visible);
                                 }
                                 !obstruction
                             },
                         );
-                for e in &entities {
+                        cache.insert((coord.x, coord.y), (opacity, coord_entities.clone()));
+                        Some((opacity, coord_entities))
+                    } else {
+                        // println!("No hits, 0");
+                        let coord_entities = HashSet::new();
+                        cache.insert((coord.x, coord.y), (0, coord_entities.clone()));
+                        Some((0, coord_entities))
+                    }
+                };
+                if let Some((opacity, coord_entities)) = result {
+                    for e in &coord_entities {
                         new_visible_entities.insert(*e);
                     }
-                cache.insert(coord, (opacity, entities.clone()));
+                    if coord_entities.contains(viewer_entity) {
-                if entities.contains(viewer_entity) {
+                        // println!("Self hit, 0");
                         0
                     } else {
+                        // println!("{}", opacity);
                         opacity
                     }
+                } else {
+                    0
+                }
             })),
         );
         let mut new_visible = HashSet::new();
@@ -129,12 +176,19 @@ impl Viewshed {
         }
         if new_visible_entities != **visible_entities {
             for lost in visible_entities.difference(&new_visible_entities) {
+                if let Ok((_, _, transform)) = visible_query.get(*lost) {
+                    // println!(
+                        // "transition: {:?} loses {:?} at {:?}",
+                        // viewer_entity, lost, transform.translation
+                    // );
+                }
                 events.send(VisibilityChanged::Lost {
                     viewer: *viewer_entity,
                     viewed: *lost,
                 });
             }
             for gained in new_visible_entities.difference(visible_entities) {
+                // println!("transition: {:?} gains {:?}", viewer_entity, gained);
                 events.send(VisibilityChanged::Gained {
                     viewer: *viewer_entity,
                     viewed: *gained,
@@ -248,15 +302,15 @@ where
 }
 
 fn update_viewshed<D: 'static + Clone + Default + Send + Sync>(
-    mut commands: Commands,
     config: Res<RapierConfiguration>,
-    positions: Query<
+    visible: Query<(&Visible, &Collider, &GlobalTransform)>,
-        (Entity, &Transform, &Collider, Option<&LastCoordinates>),
-        Or<(Changed<Transform>, Changed<Visible>)>,
-    >,
-    visible: Query<&Visible>,
     obstructions: Query<&MapObstruction>,
-    mut viewers: Query<(Entity, &mut Viewshed, &mut VisibleEntities, &Transform)>,
+    mut viewers: Query<(
+        Entity,
+        &mut Viewshed,
+        &mut VisibleEntities,
+        &GlobalTransform,
+    )>,
     map: Query<&Map<D>>,
     rapier_context: Res<RapierContext>,
     mut changed: EventWriter<VisibilityChanged>,
@@ -264,56 +318,16 @@ fn update_viewshed<D: 'static + Clone + Default + Send + Sync>(
     if !config.query_pipeline_active {
         return;
     }
-    let mut to_update = HashSet::new();
-    for (entity, transform, collider, last_coordinates) in positions.iter() {
-        if to_update.contains(&entity) {
-            continue;
-        }
-        let coordinates = (transform.translation.x, transform.translation.y);
-        let coordinates_i32 = coordinates.i32();
-        if viewers.get_mut(entity).is_ok() {
-            commands.run_if_exists(entity, move |mut entity| {
-                entity.insert(LastCoordinates(coordinates_i32));
-            });
-            if let Some(last_coordinates) = last_coordinates {
-                if **last_coordinates != coordinates.i32() {
-                    to_update.insert(entity);
-                }
-            } else {
-                to_update.insert(entity);
-            }
-        }
-        if visible.get(entity).is_err() {
-            continue;
-        }
-        for (viewer_entity, viewshed, visible_entities, viewer_coordinates) in viewers.iter_mut() {
-            if viewer_entity != entity {
-                let forward = transform.local_x();
-                let rotation = forward.y.atan2(forward.x);
-                let distance = collider.distance_to_point(
-                    transform.translation.truncate(),
-                    rotation,
-                    viewer_coordinates.translation.truncate(),
-                    true,
-                );
-                if distance <= viewshed.range as f32 || visible_entities.contains(&entity) {
-                    to_update.insert(viewer_entity);
-                    to_update.insert(entity);
-                }
-            }
-        }
-    }
-    let mut cache = HashMap::new();
-    for entity in to_update.iter() {
-        if let Ok((viewer_entity, mut viewshed, mut visible_entities, viewer_coordinates)) =
-            viewers.get_mut(*entity)
-        {
     if let Ok(map) = map.get_single() {
+        let mut cache = HashMap::new();
+        for (viewer_entity, mut viewshed, mut visible_entities, viewer_transform) in
+            viewers.iter_mut()
+        {
             viewshed.update(
                 &viewer_entity,
                 &mut visible_entities,
-                    viewer_coordinates,
+                viewer_transform,
-                    &*rapier_context,
+                &rapier_context,
                 map,
                 &visible,
                 &obstructions,
@@ -323,19 +337,24 @@ fn update_viewshed<D: 'static + Clone + Default + Send + Sync>(
         }
     }
 }
-}
 
 fn remove_visible<D: 'static + Clone + Default + Send + Sync>(
     removed: RemovedComponents<Visible>,
-    mut viewers: Query<(Entity, &mut Viewshed, &mut VisibleEntities, &Transform)>,
+    mut viewers: Query<(
+        Entity,
+        &mut Viewshed,
+        &mut VisibleEntities,
+        &GlobalTransform,
+    )>,
     map: Query<&Map<D>>,
     rapier_context: Res<RapierContext>,
-    visible: Query<&Visible>,
+    visible: Query<(&Visible, &Collider, &GlobalTransform)>,
     obstructions: Query<&MapObstruction>,
     mut changed: EventWriter<VisibilityChanged>,
 ) {
-    for removed in removed.iter() {
+    if removed.iter().len() != 0 {
         let mut cache = HashMap::new();
+        for removed in removed.iter() {
             for (viewer_entity, mut viewshed, mut visible_entities, start) in viewers.iter_mut() {
                 if !visible_entities.contains(&removed) {
                     continue;
@@ -357,6 +376,7 @@ fn remove_visible<D: 'static + Clone + Default + Send + Sync>(
             }
         }
     }
+}
 
 fn update_revealed_tiles<D: 'static + Clone + Default + Send + Sync>(
     mut map: Query<(&Map<D>, &mut RevealedTiles)>,
@@ -431,25 +451,11 @@ impl<D: 'static + Clone + Default + Send + Sync> Default for VisibilityPlugin<D>
     }
 }
 
-pub const UPDATE_VIEWSHED_LABEL: &str = "UPDATE_VIEWSHED";
-
 impl<D: 'static + Clone + Default + Send + Sync> Plugin for VisibilityPlugin<D> {
     fn build(&self, app: &mut App) {
-        const UPDATE_VIEWSHED_STAGE: &str = "UPDATE_VIEWSHED_STAGE";
         app.add_event::<VisibilityChanged>()
-            .add_stage_after(
-                CoreStage::PreUpdate,
-                UPDATE_VIEWSHED_STAGE,
-                SystemStage::parallel(),
-            )
             .add_system_to_stage(CoreStage::PreUpdate, add_visibility_indices::<D>)
-            .add_system_set_to_stage(
+            .add_system_to_stage(CoreStage::PreUpdate, update_viewshed::<D>)
-                UPDATE_VIEWSHED_STAGE,
-                SystemSet::new()
-                    .with_run_criteria(FixedTimestep::step(0.05))
-                    .with_system(update_viewshed::<D>)
-                    .label(UPDATE_VIEWSHED_LABEL),
-            )
             .add_system_to_stage(CoreStage::PostUpdate, viewshed_removed)
             .add_system_to_stage(CoreStage::PostUpdate, remove_visible::<D>)
             .add_system_to_stage(CoreStage::PreUpdate, update_revealed_tiles::<D>)