ECS Components

ECS Components

Components are stored per component type in ComponentStore<T>.

Storage

ComponentStore<T> internally maps entity.index to:

• generation
• component value
• changed tick

Operations

• add(entity, component, tick)
• remove(entity)
• get(entity)
• has(entity)
• iter()
• sortedEntities()

Change Tracking

Every write updates world changeTick and component changedAt.

Used by query .changed(type) filters.

Type Keys

Component keys may be:

• string
• symbol
• constructor function