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Expose resource change detection on World (#1715)

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This commit is contained in:
TheRawMeatball 2021-03-24 01:00:13 +00:00
parent 1c573de4f9
commit 10ef750899
1 changed files with 14 additions and 0 deletions
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14
crates/bevy_ecs/src/world/mod.rs
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@ -570,6 +570,20 @@ impl World {
unsafe { self.get_resource_with_id(component_id) }
}
pub fn is_resource_added<T: Component>(&self) -> bool {
let component_id = self.components.get_resource_id(TypeId::of::<T>()).unwrap();
let column = self.get_populated_resource_column(component_id).unwrap();
let ticks = unsafe { &*column.get_ticks_mut_ptr() };
ticks.is_added(self.last_change_tick(), self.read_change_tick())
}
pub fn is_resource_changed<T: Component>(&self) -> bool {
let component_id = self.components.get_resource_id(TypeId::of::<T>()).unwrap();
let column = self.get_populated_resource_column(component_id).unwrap();
let ticks = unsafe { &*column.get_ticks_mut_ptr() };
ticks.is_changed(self.last_change_tick(), self.read_change_tick())
}
/// Gets a mutable reference to the resource of the given type, if it exists. Otherwise returns
/// [None] Resources are "unique" data of a given type.
#[inline]