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NazaraEngine/SDK/src/NDK/Systems/VelocitySystem.cpp
Gawaboumga 95689f46fb Documentation for module 'NDK'
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// Copyright (C) 2015 Jérôme Leclercq
// This file is part of the "Nazara Development Kit"
// For conditions of distribution and use, see copyright notice in Prerequesites.hpp
#include <NDK/Systems/VelocitySystem.hpp>
#include <NDK/Components/NodeComponent.hpp>
#include <NDK/Components/PhysicsComponent.hpp>
#include <NDK/Components/VelocityComponent.hpp>
namespace Ndk
{
/*!
* \ingroup NDK
* \class Ndk::VelocitySystem
* \brief NDK class that represents the velocity system
*
* \remark This system is enabled if the entity owns the trait: NodeComponent and VelocityComponent
* but it's disabled with the trait: PhysicsComponent
*/
/*!
* \brief Constructs an VelocitySystem object by default
*/
VelocitySystem::VelocitySystem()
{
Requires<NodeComponent, VelocityComponent>();
Excludes<PhysicsComponent>();
}
/*!
* \brief Operation to perform when system is updated
*
* \param elapsedTime Delta time used for the update
*/
void VelocitySystem::OnUpdate(float elapsedTime)
{
for (const Ndk::EntityHandle& entity : GetEntities())
{
NodeComponent& node = entity->GetComponent<NodeComponent>();
const VelocityComponent& velocity = entity->GetComponent<VelocityComponent>();
node.Move(velocity.linearVelocity * elapsedTime, Nz::CoordSys_Global);
}
}
SystemIndex VelocitySystem::systemIndex;
}