Method UnregisterSystemInternal

Engine/source/EtFramework/ECS/EcsController.cpp:692–735

----------------------------------------- EcsController::UnregisterSystemInternal

// EcsController::UnregisterSystemInternal
//
void EcsController::UnregisterSystemInternal(T_SystemType const sysType)
{
	// find the registered system
	auto foundSys = std::find_if(m_Systems.cbegin(), m_Systems.cend(), [sysType](RegisteredSystem const* const sys)
		{
			return (sys->system->GetTypeId() == sysType);
		});
	ET_ASSERT(foundSys != m_Systems.cend());

	RegisteredSystem* const registered = *foundSys;

	// remove from system list - swap and remove
	uint8 const idx = static_cast<uint8>(foundSys - m_Systems.cbegin());
	if (idx != m_Systems.size() - 1)
	{
		m_Systems[idx] = m_Systems[m_Systems.size() - 1];
	}

	m_Systems.pop_back();

	// since there are other systems left, remove this system from their dependencies
	for (RegisteredSystem* const other : m_Systems)
	{
		auto const foundDep = std::find(other->dependencies.cbegin(), other->dependencies.cend(), registered);

		if (foundDep != other->dependencies.cend())
		{
			// swap and remove
			size_t const depIdx = foundDep - other->dependencies.cbegin();
			if (depIdx != other->dependencies.size() - 1)
			{
				other->dependencies[depIdx] = other->dependencies[other->dependencies.size() - 1];
			}

			other->dependencies.pop_back();
		}
	}

	// delete the system
	delete registered->system;
	delete registered;

	RecalculateSystemSchedule();
}

//------------------------------------------
// EcsController::RecalculateSystemSchedule