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[Merged by Bors] - Expose set_changed() on ResMut and Mut #2208

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[Merged by Bors] - Expose set_changed() on ResMut and Mut #2208

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0157e10
Expose set_changed() on ResMut and Mut
NathanSWard May 18, 2021
c2aa4d0
Tweak comments to make it clearer that mutation automatically trigger…
cart May 18, 2021
e997155
resource->value
cart May 18, 2021
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12 changes: 11 additions & 1 deletion crates/bevy_ecs/src/system/system_param.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -369,6 +369,16 @@ impl<'w, T: Component> ResMut<'w, T> {
self.ticks
.is_changed(self.last_change_tick, self.change_tick)
}

/// Manually flags this resource as having been changed. This normally isn't
/// required because accessing this pointer mutably automatically flags this
/// resource as "changed".
///
/// **Note**: This operation is irreversible.
#[inline]
pub fn set_changed(&mut self) {
self.ticks.set_changed(self.change_tick);
}
}

impl<'w, T: Component> Deref for ResMut<'w, T> {
Expand All @@ -381,7 +391,7 @@ impl<'w, T: Component> Deref for ResMut<'w, T> {

impl<'w, T: Component> DerefMut for ResMut<'w, T> {
fn deref_mut(&mut self) -> &mut Self::Target {
self.ticks.set_changed(self.change_tick);
self.set_changed();
self.value
}
}
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12 changes: 11 additions & 1 deletion crates/bevy_ecs/src/world/pointer.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,16 @@ impl<'a, T> Mut<'a, T> {
self.component_ticks.set_changed(self.change_tick);
self.value
}

/// Manually flags this value as having been changed. This normally isn't
/// required because accessing this pointer mutably automatically flags this
/// value as "changed".
///
/// **Note**: This operation is irreversible.
#[inline]
pub fn set_changed(&mut self) {
self.component_ticks.set_changed(self.change_tick);
}
}

impl<'a, T> Deref for Mut<'a, T> {
Expand All @@ -28,7 +38,7 @@ impl<'a, T> Deref for Mut<'a, T> {
impl<'a, T> DerefMut for Mut<'a, T> {
#[inline]
fn deref_mut(&mut self) -> &mut T {
self.component_ticks.set_changed(self.change_tick);
self.set_changed();
self.value
}
}
Expand Down