Indicator Distance

CHANGELOG.md

@@ -10,6 +10,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - PlayTime resource records unpaused play time
+- Add rotation effect; will rotate entities with the Rotation component
+
+### Changed
+
+- Add distance value to Indicated entities, enabling some to be hidden from system when out of range
 
 ### Fixed
 

src/core/effects/mod.rs

@@ -1,2 +1,3 @@
 pub mod animate;
 pub mod blink;
+pub mod rotate;

src/core/effects/rotate.rs

@@ -0,0 +1,10 @@
+use bevy::prelude::*;
+
+#[derive(Component)]
+pub struct Rotation(pub f32);
+
+pub(crate) fn rotate_system(time: Res<Time>, mut query: Query<(&mut Transform, &Rotation)>) {
+    for (mut transform, rotation) in query.iter_mut() {
+        transform.rotate_z(rotation.0 * time.delta_seconds());
+    }
+}

src/core/resources/assets.rs

@@ -58,6 +58,9 @@ pub struct SpriteAssets {
 
     #[asset(path = "space/meteors/meteorGrey_med1.png")]
     pub meteor: Handle<Image>,
+
+    #[asset(path = "space/celestials/teapot_large.png")]
+    pub teapot: Handle<Image>,
 }
 
 #[derive(AssetCollection, Resource)]

src/ships/enemy.rs

@@ -113,7 +113,10 @@ pub(crate) fn spawn_enemies(
             },
             Gravitable,
             Health(1000.0),
-            Indicated { color: Color::RED },
+            Indicated {
+                color: Color::RED,
+                ..default()
+            },
             SpriteBundle {
                 texture: sprites.enemy_ship.clone(),
                 transform: Transform {

src/systems/mod.rs

@@ -177,6 +177,7 @@ impl Plugin for SystemsPlugin {
                 resources::game_time::tick_game_time,
                 resources::despawn_timer::despawn_system,
                 effects::animate::animate_sprite,
+                effects::rotate::rotate_system,
                 astronomy::orbit::orbitable_update_system,
                 astronomy::orbit::orbital_positioning_system,
                 enemy::spawn_enemies,

src/ui/hud/indicator.rs

@@ -1,10 +1,19 @@
-use bevy::{math::Vec3Swizzles, prelude::*};
+use bevy::prelude::*;
 
 use crate::ships::player::Player;
 
 #[derive(Component, Clone, Debug)]
 pub struct Indicated {
     pub color: Color,
+    pub distance: f32,
+}
+impl Default for Indicated {
+    fn default() -> Self {
+        Self {
+            color: Color::WHITE,
+            distance: 1_000_000.0,
+        }
+    }
 }
 
 #[derive(Component, Clone, Debug)]
@@ -74,23 +83,27 @@ pub(crate) fn indicators_system(
     bounds_query: Query<&Node, (With<Bounds>, Without<Indicator>)>,
 ) {
     if let Ok(player_transform) = player_query.get_single() {
-        let player_translation = player_transform.translation.xy();
+        let player_translation = player_transform.translation.truncate();
 
         for (mut indicator_transform, mut indicator_style, indicator, mut indicator_color) in
             &mut query
         {
             if let Ok((entity_transform, entity_visibility, indicated)) =
                 entity_query.get(indicator.entity)
             {
-                if entity_visibility.get() {
+                let entity_translation = entity_transform.translation.truncate();
+
+                // If the entity is in view or its distance exceeds its Indicated::distance
+                // value, hide it and continue.
+                if entity_visibility.get()
+                    || (entity_translation.distance(player_translation) > indicated.distance)
+                {
                     indicator_style.display = Display::None;
                     continue;
                 }
 
                 indicator_style.display = Display::DEFAULT;
 
-                let entity_translation = entity_transform.translation.xy();
-
                 // get the vector from the entity to the player ship in 2D and normalize it.
                 let real_to_entity = entity_translation - player_translation;
                 let to_entity = real_to_entity.normalize();

src/world/astronomy/planet.rs

@@ -35,6 +35,7 @@ impl Default for PlanetBundle {
             marker: Planet,
             indicated: Indicated {
                 color: Color::ORANGE_RED,
+                ..default()
             },
             orbitable: Orbitable::default(),
             orbit: Orbit::default(),

src/world/astronomy/planetary_system.rs

@@ -2,10 +2,14 @@ use bevy::prelude::*;
 
 use crate::{
     core::{
-        effects::animate::{AnimationBundle, AnimationTimer},
+        effects::{
+            animate::{AnimationBundle, AnimationTimer},
+            rotate::Rotation,
+        },
         resources::assets::SpriteAssets,
     },
     ui::hud::indicator::Indicated,
+    world::spatial::KDNode,
 };
 
 use super::{
@@ -40,6 +44,7 @@ pub(crate) fn spawn_planets(
         name: Name::new("Mercury"),
         indicated: Indicated {
             color: Color::ORANGE,
+            ..default()
         },
         orbit: Orbit {
             parent: Some(star_query.single()),
@@ -61,6 +66,7 @@ pub(crate) fn spawn_planets(
         name: Name::new("Venus"),
         indicated: Indicated {
             color: Color::ORANGE,
+            ..default()
         },
         orbit: Orbit {
             parent: Some(star_query.single()),
@@ -83,6 +89,7 @@ pub(crate) fn spawn_planets(
             name: Name::new("Earth"),
             indicated: Indicated {
                 color: Color::LIME_GREEN,
+                ..default()
             },
             orbit: Orbit {
                 parent: Some(star_query.single()),
@@ -102,10 +109,33 @@ pub(crate) fn spawn_planets(
         },
         EarthLike,
     ));
+    commands.spawn((
+        Name::new("Russell's Teapot"),
+        Indicated {
+            color: Color::FUCHSIA,
+            distance: 5_000.0,
+        },
+        Orbit {
+            parent: Some(star_query.single()),
+            semi_major_axis: 188_768_694_434.0,
+            eccentricity: 0.1234,
+            argument_of_periapsis: f32::to_radians(89.0),
+            initial_mean_anomaly: f32::to_radians(0.), //TODO: Set me
+        },
+        SpriteBundle {
+            texture: sprites.teapot.clone(),
+            transform: Transform::from_scale(Vec3::splat(1.0)),
+            ..default()
+        },
+        Mass(1.0),
+        KDNode,
+        Rotation(f32::to_radians(45.0)),
+    ));
     commands.spawn(PlanetBundle {
         name: Name::new("Mars"),
         indicated: Indicated {
             color: Color::ORANGE,
+            ..default()
         },
         orbit: Orbit {
             parent: Some(star_query.single()),
@@ -127,6 +157,7 @@ pub(crate) fn spawn_planets(
         name: Name::new("Jupiter"),
         indicated: Indicated {
             color: Color::SALMON,
+            ..default()
         },
         orbit: Orbit {
             parent: Some(star_query.single()),
@@ -152,6 +183,7 @@ pub(crate) fn spawn_planets(
         name: Name::new("Saturn"),
         indicated: Indicated {
             color: Color::SALMON,
+            ..default()
         },
         orbit: Orbit {
             parent: Some(star_query.single()),
@@ -173,6 +205,7 @@ pub(crate) fn spawn_planets(
         name: Name::new("Uranus"),
         indicated: Indicated {
             color: Color::SALMON,
+            ..default()
         },
         orbit: Orbit {
             parent: Some(star_query.single()),
@@ -194,6 +227,7 @@ pub(crate) fn spawn_planets(
         name: Name::new("Neptune"),
         indicated: Indicated {
             color: Color::SALMON,
+            ..default()
         },
         orbit: Orbit {
             parent: Some(star_query.single()),

src/world/astronomy/star.rs

@@ -35,6 +35,7 @@ impl Default for StarBundle {
             marker: Star,
             indicated: Indicated {
                 color: Color::ANTIQUE_WHITE,
+                ..default()
             },
             orbitable: Orbitable::ZERO,
             animation_bundle: AnimationBundle {