C++ (Cpp) Vector2d::getSqrLength示例

// Obtiene el objeto en una posicion indicada. Solo objetos registrados con collider
GameObject* CollisionManager::getGameObjectIn( Vector2d position )
{
	for(std::size_t i = 0; i < colliderAlliesList.size(); i++)
	{
		Vector2d direction = position - colliderAlliesList[i]->getGameObject()->position;
		float distance = direction.getSqrLength();

		if(distance <= colliderAlliesList[i]->getSqrCollisionRadius())
		{
			return colliderAlliesList[i]->getGameObject();
		}
	}

	for(std::size_t i = 0; i < colliderEnemyList.size(); i++)
	{
		Vector2d direction = position - colliderEnemyList[i]->getGameObject()->position;
		float distance = direction.getSqrLength();

		if(distance <= colliderEnemyList[i]->getSqrCollisionRadius())
		{
			return colliderEnemyList[i]->getGameObject();
		}
	}
	return NULL;
}

示例#2

显示文件

文件： CollisionManager.cpp 项目： rubenmv/SpaceDefenders

// Comprueba colision entre Vision y Collider. Un objeto entra en la vision de otro
void CollisionManager::checkVisionBetween (ComponentVision* visionCollider, ComponentCollider* targetCollider)
{
	//Optimizaciones de memoria
	GameObject *targetGameObject = targetCollider->getGameObject();

	if(targetGameObject->isDead())
	{
		return;
	}

	// Distancia entre los objetos
	Vector2d direction = targetGameObject->position - visionCollider->getGameObject()->position;
	float distance = direction.getSqrLength();

	float sqrVisionRadius = visionCollider->getSqrVisionRadius();
	float sqrTargetRadius = targetCollider->getSqrCollisionRadius();

	// Dentro de vision
	if(distance <= sqrVisionRadius + sqrTargetRadius)
	{
		Collision collision;
		collision.collider = targetGameObject;
		collision.direction = direction;
		visionCollider->onVision(collision);
	}
}