28 lines
899 B
Rust
28 lines
899 B
Rust
use bevy::{prelude::*, window::PrimaryWindow};
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pub struct PointerPlugin;
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impl Plugin for PointerPlugin {
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fn build(&self, app: &mut App) {
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app.init_resource::<PointerTarget>()
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.add_systems(Update, update_pointer_target);
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}
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}
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/// World position of the active touch or mouse cursor, if any.
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#[derive(Resource, Default)]
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pub struct PointerTarget(pub Option<Vec2>);
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fn update_pointer_target(
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window: Single<&Window, With<PrimaryWindow>>,
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camera: Single<(&Camera, &GlobalTransform)>,
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touches: Res<Touches>,
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mut target: ResMut<PointerTarget>,
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) {
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let (camera, camera_transform) = *camera;
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// Touch and cursor positions are both in logical window pixels
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target.0 = touches
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.first_pressed_position()
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.or_else(|| window.cursor_position())
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.and_then(|position| camera.viewport_to_world_2d(camera_transform, position).ok());
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}
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