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package coffee.liz.ecs
import kotlin.reflect.KClass
import kotlin.time.Duration
/**
* [World] is the state of the world.
* @param Outside is the state of the stuff outside the world (input, etc.).
*/
interface World<Outside> {
/**
* Create unique [Entity] in the [World].
*/
fun createEntity(): Entity
/**
* Remove [entity] from [World].
*/
fun removeEntity(entity: Entity)
/**
* Get entities with a [Component] type.
*/
fun query(vararg componentTypes: KClass<out Component>): Set<Entity>
/**
* Integrate the [World].
*/
fun update(state: Outside, deltaTime: Duration)
}
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