Struct Observer 

pub struct Observer { /* private fields */ }

A struct representing an observer of entity changes in the game systems.

Implementations

impl Observer

pub fn new(event: EntityEvent, components: &Vec<&str>) -> Observer

A method that creates a new observer with the specified component filter and action to watch for.

Arguments

• event - The type of event to watch for.
• components - A vector listing the names of the components to filter entities by.

Returns

• Observer - The new observer.

impl Observer

pub fn watch( &mut self, callback: Box<dyn FnMut(&mut CallStack) -> bool>, ) -> &mut Observer

Watches the components changes to entities that match the observer’s component filter.

Arguments

• callback - The function to call when a change occurs. Returns true to stop watching.

Returns

• Observer - The same observer, for method chaining.

Trait Implementations

impl Clone for Observer

fn clone(&self) -> Observer

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Drop for Observer

fn drop(&mut self)

Executes the destructor for this type.

impl IObject for Observer

fn raw(&self) -> i64

fn obj(&self) -> &dyn IObject

fn as_any(&self) -> &dyn Any

fn get_id(&self) -> i32