class_name TestASystem extends System func deps(): return { Runs.After: [], # Doesn't run after any other system Runs.Before: [ECS.wildcard], # This system runs before all other systems } func query(): return ECS.world.query.with_all([C_TestA]) func process(entities: Array[Entity], components: Array, delta: float): for entity in entities: var a = entity.get_component(C_TestA) as C_TestA a.value += 1 a.property_changed.emit(a, 'value', null, null) print("TestASystem: ", entity.name, a.value)