Struct ComponentWriter

pub struct ComponentWriter<'a> { /* private fields */ }

Provides methods adding or removing components from a component vec.

Implementations

impl<'a> ComponentWriter<'a>

pub unsafe fn push_raw(&mut self, components: NonNull<u8>, count: usize)

Pushes new components onto the end of the vec.

Safety

Ensure the components pointed to by components are representative of the component types stored in the vec.

This function will copy all elements into the chunk. If the source is not Copy, the caller must then mem::forget the source such that the destructor does not run on the original data.

Panics

Will panic when an internal u64 counter overflows. It will happen in 50000 years if you do 10000 mutations a millisecond.

pub unsafe fn push<T: Component>(&mut self, components: &[T])

Pushes new components onto the end of the vec.

Safety

Ensure that the type T is representative of the component types stored in the vec.

This function will copy all elements of T into the chunk. If T is not Copy, the caller must then mem::forget the source such that the destructor does not run on the original data.

pub fn swap_remove(&mut self, index: usize, drop: bool)

Removes the component at the specified index by swapping it with the last component.

pub unsafe fn drop_in_place(&mut self, ComponentIndex: ComponentIndex)

Drops the component stored at index without moving any other data or altering the number of elements.

Safety

Ensure that this function is only ever called once on a given index.