265 lines
8.4 KiB
Rust
265 lines
8.4 KiB
Rust
//! A simple 3D scene with light shining over a cube sitting on a plane.
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use std::ops::Deref;
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use bevy::prelude::*;
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use bevy_mod_openxr::{
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action_binding::{OxrSendActionBindings, OxrSuggestActionBinding},
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action_set_attaching::OxrAttachActionSet,
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action_set_syncing::{OxrActionSetSyncSet, OxrSyncActionSet},
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add_xr_plugins,
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helper_traits::{ToQuat, ToVec3},
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resources::{OxrFrameState, OxrInstance, Pipelined},
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session::OxrSession,
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spaces::{OxrSpaceExt, OxrSpaceLocationFlags, OxrSpaceSyncSet, OxrSpaceVelocityFlags},
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};
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use bevy_mod_xr::{
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session::{session_available, session_running, XrSessionCreated, XrTrackingRoot},
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spaces::{XrPrimaryReferenceSpace, XrReferenceSpace, XrSpace, XrVelocity},
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types::XrPose,
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};
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use openxr::Posef;
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fn main() {
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let mut app = App::new();
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app.add_plugins(add_xr_plugins(DefaultPlugins));
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app.add_systems(Startup, setup);
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//create bindings
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app.add_systems(OxrSendActionBindings, suggest_action_bindings);
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//sync actions
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app.add_systems(
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PreUpdate,
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sync_actions
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.before(OxrActionSetSyncSet)
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.run_if(session_running),
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);
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//things?
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app.add_systems(XrSessionCreated, spawn_hands);
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app.add_systems(XrSessionCreated, attach_set);
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app.add_systems(Startup, create_actions.run_if(session_available));
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//head space
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app.add_systems(
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PreUpdate,
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update_head_transforms
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.in_set(OxrSpaceSyncSet)
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.run_if(session_running),
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);
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//local floor emulated
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app.add_systems(PreUpdate, update_local_floor.after(update_head_transforms));
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app.run();
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}
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/// set up a simple 3D scene
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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<StandardMaterial>>,
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) {
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// circular base
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commands.spawn(PbrBundle {
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mesh: meshes.add(Circle::new(4.0)),
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material: materials.add(Color::WHITE),
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transform: Transform::from_rotation(Quat::from_rotation_x(-std::f32::consts::FRAC_PI_2)),
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..default()
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});
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// cube
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commands.spawn(PbrBundle {
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mesh: meshes.add(Cuboid::new(1.0, 1.0, 1.0)),
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material: materials.add(Color::srgb_u8(124, 144, 255)),
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transform: Transform::from_xyz(0.0, 0.5, 0.0),
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..default()
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});
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// light
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commands.spawn(PointLightBundle {
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point_light: PointLight {
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shadows_enabled: true,
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..default()
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},
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transform: Transform::from_xyz(4.0, 8.0, 4.0),
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..default()
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});
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commands.spawn(Camera3dBundle {
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transform: Transform::from_xyz(-2.5, 4.5, 9.0).looking_at(Vec3::ZERO, Vec3::Y),
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..default()
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});
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}
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#[derive(Resource)]
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struct ControllerActions {
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set: openxr::ActionSet,
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left: openxr::Action<Posef>,
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right: openxr::Action<Posef>,
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}
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fn suggest_action_bindings(
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actions: Res<ControllerActions>,
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mut bindings: EventWriter<OxrSuggestActionBinding>,
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) {
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bindings.send(OxrSuggestActionBinding {
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action: actions.left.as_raw(),
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interaction_profile: "/interaction_profiles/oculus/touch_controller".into(),
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bindings: vec!["/user/hand/left/input/grip/pose".into()],
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});
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bindings.send(OxrSuggestActionBinding {
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action: actions.right.as_raw(),
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interaction_profile: "/interaction_profiles/oculus/touch_controller".into(),
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bindings: vec!["/user/hand/right/input/grip/pose".into()],
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});
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}
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fn sync_actions(actions: Res<ControllerActions>, mut sync: EventWriter<OxrSyncActionSet>) {
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sync.send(OxrSyncActionSet(actions.set.clone()));
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}
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fn attach_set(actions: Res<ControllerActions>, mut attach: EventWriter<OxrAttachActionSet>) {
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attach.send(OxrAttachActionSet(actions.set.clone()));
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}
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fn create_actions(instance: Res<OxrInstance>, mut cmds: Commands) {
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let set = instance.create_action_set("hands", "Hands", 0).unwrap();
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let left = set
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.create_action("left_pose", "Left Hand Grip Pose", &[])
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.unwrap();
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let right = set
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.create_action("right_pose", "Right Hand Grip Pose", &[])
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.unwrap();
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cmds.insert_resource(ControllerActions { set, left, right })
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}
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fn spawn_hands(
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actions: Res<ControllerActions>,
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mut cmds: Commands,
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root: Query<Entity, With<XrTrackingRoot>>,
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session: Res<OxrSession>,
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mut meshes: ResMut<Assets<Mesh>>,
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mut materials: ResMut<Assets<StandardMaterial>>,
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) {
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// This is a demonstation of how to integrate with the openxr crate, the right space is the
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// recommended way
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let left_space = XrSpace::from_openxr_space(
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actions
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.left
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.create_space(
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session.deref().deref().clone(),
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openxr::Path::NULL,
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Posef::IDENTITY,
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)
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.unwrap(),
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);
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let right_space = session
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.create_action_space(&actions.right, openxr::Path::NULL, XrPose::IDENTITY)
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.unwrap();
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let left = cmds
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.spawn((
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PbrBundle {
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mesh: meshes.add(Cuboid::new(0.1, 0.1, 0.05)),
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material: materials.add(Color::srgb_u8(124, 144, 255)),
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transform: Transform::from_xyz(0.0, 0.5, 0.0),
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..default()
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},
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left_space,
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))
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.id();
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let right = cmds
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.spawn((
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PbrBundle {
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mesh: meshes.add(Cuboid::new(0.1, 0.1, 0.05)),
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material: materials.add(Color::srgb_u8(124, 144, 255)),
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transform: Transform::from_xyz(0.0, 0.5, 0.0),
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..default()
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},
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right_space,
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))
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.id();
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//head?
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let head_space = session
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.create_reference_space(openxr::ReferenceSpaceType::VIEW, Transform::IDENTITY)
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.unwrap();
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let head = cmds
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.spawn((
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PbrBundle {
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mesh: meshes.add(Cuboid::new(0.2, 0.2, 0.2)),
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material: materials.add(Color::srgb_u8(255, 144, 144)),
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transform: Transform::from_xyz(0.0, 0.0, 0.0),
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..default()
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},
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HeadXRSpace(head_space),
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))
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.id();
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//local_floor? emulated
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let local_floor = cmds
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.spawn((
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PbrBundle {
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mesh: meshes.add(Cuboid::new(0.5, 0.1, 0.5)),
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material: materials.add(Color::srgb_u8(144, 255, 144)),
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transform: Transform::from_xyz(0.0, 0.0, 0.0),
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..default()
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},
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LocalFloor,
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))
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.id();
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cmds.entity(root.single())
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.push_children(&[left, right, head, local_floor]);
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}
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#[derive(Component)]
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struct HeadXRSpace(XrReferenceSpace);
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#[allow(clippy::type_complexity)]
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fn update_head_transforms(
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session: Res<OxrSession>,
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default_ref_space: Res<XrPrimaryReferenceSpace>,
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pipelined: Option<Res<Pipelined>>,
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frame_state: Res<OxrFrameState>,
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mut query: Query<(&mut Transform, &HeadXRSpace, Option<&XrReferenceSpace>)>,
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) {
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for (mut transform, space, ref_space) in &mut query {
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let ref_space = ref_space.unwrap_or(&default_ref_space);
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let time = if pipelined.is_some() {
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openxr::Time::from_nanos(
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frame_state.predicted_display_time.as_nanos()
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+ frame_state.predicted_display_period.as_nanos(),
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)
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} else {
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frame_state.predicted_display_time
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};
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let space_location = session.locate_space(&space.0, ref_space, time);
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if let Ok(space_location) = space_location {
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let flags = OxrSpaceLocationFlags(space_location.location_flags);
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if flags.pos_valid() {
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transform.translation = space_location.pose.position.to_vec3();
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}
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if flags.rot_valid() {
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transform.rotation = space_location.pose.orientation.to_quat();
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}
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}
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}
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}
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//emulated local_floor
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#[derive(Component)]
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struct LocalFloor;
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fn update_local_floor(
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mut headSpace: Query<&mut Transform, (With<HeadXRSpace>, Without<LocalFloor>)>,
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mut local_floor: Query<&mut Transform, (With<LocalFloor>, Without<HeadXRSpace>)>,
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) {
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let head_transform = headSpace.get_single_mut();
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match head_transform {
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Ok(head) => {
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let mut calc_floor = head.clone();
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calc_floor.translation.y = 0.0;
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calc_floor.rotation = Quat::IDENTITY;
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for (mut transform) in &mut local_floor {
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*transform = calc_floor;
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}
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}
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Err(_) => (),
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}
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}
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