trying to use avian for the events
Elijah Voigt
1 month ago
parent
88cd679fa7
commit
a17ae88a9f
@ -1,2 +0,0 @@
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* setup CI template in web server running on port 8000
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* setup mock bevy app running on port 8001 w/ first app running in iframe
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@ -0,0 +1,152 @@
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use avian3d::math::Vector;
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// TEMP
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use bevy::{color::palettes::css::*, prelude::*};
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use avian2d::prelude::*;
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fn main() {
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App::new()
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.add_plugins(DefaultPlugins)
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.add_plugins(PhysicsPlugins::default())
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.insert_resource(ClearColor(WHITE.into()))
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.add_systems(Startup, setup)
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.add_systems(Update, move_player)
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.add_systems(Update, follow_player)
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.add_systems(Update, draw_gizmos)
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.add_systems(Update, event_detection.run_if(on_event::<CollisionStarted>.or(on_event::<CollisionEnded>)))
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.add_observer(set_tree_position)
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.run();
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}
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#[derive(Component)]
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struct Player;
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#[derive(Component)]
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struct RenderGizmo;
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#[derive(Component)]
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struct PlayArea;
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#[derive(Component, Debug)]
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struct TreePos(isize);
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fn setup(
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mut commands: Commands,
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mut meshes: ResMut<Assets<Mesh>>,
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mut materials: ResMut<Assets<ColorMaterial>>,
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) {
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commands.spawn(Camera2d);
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// Spawn "trees" (which are also sensors)
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[
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("TREE -3", -3),
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("TREE -2", -2),
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("TREE -2", -1),
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("TREE 1", 1),
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("TREE 2", 2),
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("TREE 3", 3),
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]
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.iter()
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.for_each(|(label, pos)| {
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commands.spawn((
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RigidBody::Static,
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Collider::rectangle(100.0, 250.0),
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Mesh2d(meshes.add(Rectangle::new(100.0, 250.0))),
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MeshMaterial2d(materials.add(Color::from(GREEN))),
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TreePos(*pos),
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children![Text2d::new(*label),],
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));
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});
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commands.spawn((
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Player,
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RigidBody::Kinematic,
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ExternalImpulse::default().with_persistence(true),
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Collider::rectangle(50.0, 50.0),
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Mesh2d(meshes.add(Rectangle::new(50.0, 50.0))),
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MeshMaterial2d(materials.add(Color::from(RED))),
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children![
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(
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Text2d::new("PLAYER"),
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Transform::from_scale(Vec3::new(0.5, 0.5, 0.5)),
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),
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(
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Text2d::new("PLAY AREA"),
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Transform::from_xyz(0.0, 212.0, 1.0),
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TextColor(BLACK.into())
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),
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(
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RenderGizmo,
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PlayArea,
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Visibility::Visible,
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Transform::from_scale(Vec3::new(400.0, 400.0, 0.0)),
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),
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],
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));
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}
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fn set_tree_position(
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trigger: Trigger<OnAdd, TreePos>,
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tree_pos: Query<&TreePos>,
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mut commands: Commands,
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) {
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let TreePos(pos) = tree_pos.get(trigger.target()).unwrap();
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let x = if (*pos) > 0 {
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(200.0 * (*pos) as f32) - 100.0
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} else {
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(200.0 * (*pos) as f32) + 100.0
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};
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let t = Transform::from_xyz(x, 0.0, 0.0);
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commands.entity(trigger.target()).insert(t);
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}
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fn move_player(
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keyboard_input: Res<ButtonInput<KeyCode>>,
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mut player: Single<&mut ExternalImpulse, With<Player>>,
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) {
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const SPEED: f32 = 5.0;
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if keyboard_input.pressed(KeyCode::ArrowLeft) {
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player.set_impulse(Vec2::NEG_X * SPEED);
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} else if keyboard_input.pressed(KeyCode::ArrowRight) {
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player.set_impulse(Vec2::X * SPEED);
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}
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}
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fn follow_player(
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player: Query<&Transform, (With<Player>, Changed<Transform>)>,
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mut camera: Single<&mut Transform, (With<Camera2d>, Without<Player>)>,
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) {
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player.iter().for_each(|pt| {
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camera.translation = pt.translation;
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});
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}
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fn draw_gizmos(mut gizmos: Gizmos, play_area: Single<&GlobalTransform, With<RenderGizmo>>) {
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gizmos.rect_2d(
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play_area.translation().truncate(),
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play_area.scale().truncate(),
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MAGENTA,
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)
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}
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fn event_detection(
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mut start_events: EventReader<CollisionStarted>,
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mut end_events: EventReader<CollisionEnded>,
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player: Single<&Player>,
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trees: Query<&TreePos>,
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keyboard_input: Res<ButtonInput<KeyCode>>,
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) {
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debug_assert!(!(start_events.is_empty() && end_events.is_empty()));
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let s = start_events.read().map(|CollisionStarted(a, b)| (a, b));
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let e = end_events.read().map(|CollisionEnded(a, b)| (a, b));
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let mut events = s.chain(e);
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let current_tree = events.find_map(|(a, b)| {
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info!("{a:?}, {b:?}");
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trees.get(*a).or(trees.get(*b)).ok()
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});
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info!("{:?}", current_tree);
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if keyboard_input.pressed(KeyCode::ArrowLeft) {
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// moving left
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} else if keyboard_input.pressed(KeyCode::ArrowRight) {
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// moving right
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}
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}
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