pub struct EntityCursor<'a, T> { /* private fields */ }Expand description
A cursor which provides read-only access to an EntityList.
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Source§impl<'a, T> EntityCursor<'a, T>
impl<'a, T> EntityCursor<'a, T>
Sourcepub fn get(&self) -> Option<EntityRef<'a, T>>
pub fn get(&self) -> Option<EntityRef<'a, T>>
Get a shared reference to the entity under the cursor.
Returns None if the cursor is currently pointing to the null object.
NOTE: This returns an EntityRef whose lifetime is bound to the underlying EntityList, not the EntityCursor, since the cursor cannot mutate the list.
Sourcepub fn as_pointer(&self) -> Option<UnsafeIntrusiveEntityRef<T>>
pub fn as_pointer(&self) -> Option<UnsafeIntrusiveEntityRef<T>>
Get the [TrackedEntityHandle] corresponding to the entity under the cursor.
Returns None if the cursor is pointing to the null object.
Sourcepub fn into_borrow(self) -> Option<EntityRef<'a, T>>
pub fn into_borrow(self) -> Option<EntityRef<'a, T>>
Consume the cursor and convert it into a borrow of the current entity, or None if null.
Sourcepub fn move_next(&mut self)
pub fn move_next(&mut self)
Moves the cursor to the next element of the EntityList.
If the cursor is pointing to the null object then this will move it to the front of the EntityList. If it is pointing to the back of the EntityList then this will move it to the null object.
Sourcepub fn move_prev(&mut self)
pub fn move_prev(&mut self)
Moves the cursor to the previous element of the EntityList.
If the cursor is pointing to the null object then this will move it to the back of the EntityList. If it is pointing to the front of the EntityList then this will move it to the null object.
Sourcepub fn peek_next(&self) -> EntityCursor<'_, T>
pub fn peek_next(&self) -> EntityCursor<'_, T>
Returns a cursor pointing to the next element of the EntityList.
If the cursor is pointing to the null object then this will return a cursor pointing to the front of the EntityList. If it is pointing to the last entity of the EntityList then this will return a null cursor.
Sourcepub fn peek_prev(&self) -> EntityCursor<'_, T>
pub fn peek_prev(&self) -> EntityCursor<'_, T>
Returns a cursor pointing to the previous element of the EntityList.
If the cursor is pointing to the null object then this will return a cursor pointing to the last entity in the EntityList. If it is pointing to the front of the EntityList then this will return a null cursor.
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impl<'a, T> Freeze for EntityCursor<'a, T>
impl<'a, T> !RefUnwindSafe for EntityCursor<'a, T>
impl<'a, T> !Send for EntityCursor<'a, T>
impl<'a, T> !Sync for EntityCursor<'a, T>
impl<'a, T> Unpin for EntityCursor<'a, T>
impl<'a, T> !UnwindSafe for EntityCursor<'a, T>
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