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use crate::ecs::{ prelude::Component, storage::{DenseVecStorage, FlaggedStorage, NullStorage}, }; /// Hidden mesh component /// Useful for entities, that should not be rendered, but stay loaded in memory. #[derive(Clone, Debug, Default)] pub struct Hidden; impl Component for Hidden { type Storage = NullStorage<Self>; } /// Like [Hidden](struct.Hidden.html), but can propagate through children when the [HideHierarchySystem](struct.HideHierarchySystem.html) /// is enabled in the [RenderBundle](struct.RenderBundle.html). #[derive(Clone, Debug)] pub struct HiddenPropagate { /// Whether this is inserted automatically by propagation though the `ParentHierarchy`. /// /// If true, then the `HideHierarchySystem` should manage (insert / remove) the component. /// If the user inserts it themselves, then the `HideHierarchySystem` should not remove it. pub(crate) is_propagated: bool, } impl Component for HiddenPropagate { type Storage = FlaggedStorage<Self, DenseVecStorage<Self>>; } impl HiddenPropagate { /// Creates an instance of HiddenPropagate. pub fn new() -> Self { Self { is_propagated: false, } } /// Is meant to be used only by HideHierarchySystem. pub(crate) fn new_propagated() -> Self { Self { is_propagated: true, } } /// Returns true if this component was propagated by [HideHierarchySystem](struct.HideHierarchySystem.html) automatically. pub fn is_propagated(&self) -> bool { self.is_propagated } }