119 lines
3.6 KiB
C++
119 lines
3.6 KiB
C++
#include "TransformSystem.h"
|
|
|
|
#include "src/Core/Maths.h"
|
|
#include "src/Scene/Scene.h"
|
|
#include <src/Scene/Components/TransformComponent.h>
|
|
#include <src/Scene/Components/CameraComponent.h>
|
|
#include <src/Scene/Components/ParentComponent.h>
|
|
|
|
namespace Nuake
|
|
{
|
|
TransformSystem::TransformSystem(Scene* scene)
|
|
{
|
|
m_Scene = scene;
|
|
}
|
|
|
|
bool TransformSystem::Init()
|
|
{
|
|
UpdateTransform();
|
|
return true;
|
|
}
|
|
|
|
void TransformSystem::Update(Timestep ts)
|
|
{
|
|
UpdateTransform();
|
|
}
|
|
|
|
void TransformSystem::FixedUpdate(Timestep ts)
|
|
{
|
|
|
|
}
|
|
|
|
void TransformSystem::Exit()
|
|
{
|
|
|
|
}
|
|
|
|
void TransformSystem::UpdateTransform()
|
|
{
|
|
// Calculate all local transforms
|
|
auto localTransformView = m_Scene->m_Registry.view<TransformComponent>();
|
|
for (auto tv : localTransformView)
|
|
{
|
|
TransformComponent& transform = localTransformView.get<TransformComponent>(tv);
|
|
if (transform.Dirty)
|
|
{
|
|
Matrix4 localTransform = Matrix4(1.0f);
|
|
auto& localTranslate = transform.GetLocalPosition();
|
|
auto& localRot = transform.GetLocalRotation();
|
|
auto& localScale = transform.GetLocalScale();
|
|
|
|
localTransform = glm::translate(localTransform, localTranslate);
|
|
localTransform = localTransform * glm::toMat4(localRot);
|
|
localTransform = glm::scale(localTransform, localScale);
|
|
|
|
transform.SetLocalTransform(localTransform);
|
|
transform.Dirty = false;
|
|
}
|
|
}
|
|
|
|
// Calculate all global transforms
|
|
auto transformView = m_Scene->m_Registry.view<ParentComponent, TransformComponent>();
|
|
for (auto e : transformView)
|
|
{
|
|
auto [parent, transform] = transformView.get<ParentComponent, TransformComponent>(e);
|
|
|
|
if (!parent.HasParent)
|
|
{
|
|
// If no parents, then globalTransform is local transform.
|
|
transform.SetGlobalTransform(transform.GetLocalTransform());
|
|
transform.SetGlobalPosition(transform.GetLocalPosition());
|
|
transform.SetGlobalRotation(transform.GetLocalRotation());
|
|
transform.SetGlobalScale(transform.GetLocalScale());
|
|
continue;
|
|
}
|
|
|
|
Entity currentParent = Entity((entt::entity)e, m_Scene);
|
|
|
|
Matrix4 globalTransform = transform.GetLocalTransform();
|
|
Vector3 globalPosition = transform.GetLocalPosition();
|
|
Quat globalOrientation = transform.GetLocalRotation();
|
|
Vector3 globalScale = transform.GetLocalScale();
|
|
|
|
ParentComponent parentComponent = currentParent.GetComponent<ParentComponent>();
|
|
while (parentComponent.HasParent)
|
|
{
|
|
TransformComponent& transformComponent = parentComponent.Parent.GetComponent<TransformComponent>();
|
|
|
|
globalTransform = transformComponent.GetLocalTransform() * globalTransform;
|
|
|
|
globalPosition += transformComponent.GetLocalPosition();
|
|
globalOrientation *= transformComponent.GetLocalRotation();
|
|
globalScale *= transformComponent.GetLocalScale();
|
|
|
|
NameComponent& nameComponent = parentComponent.Parent.GetComponent<NameComponent>();
|
|
|
|
parentComponent = parentComponent.Parent.GetComponent<ParentComponent>();
|
|
}
|
|
|
|
transform.SetGlobalPosition(globalPosition);
|
|
transform.SetGlobalRotation(globalOrientation);
|
|
transform.SetGlobalScale(globalScale);
|
|
transform.SetGlobalTransform(globalTransform);
|
|
}
|
|
|
|
auto camView = m_Scene->m_Registry.view<TransformComponent, CameraComponent>();
|
|
for (auto& e : camView)
|
|
{
|
|
auto [transform, camera] = camView.get<TransformComponent, CameraComponent>(e);
|
|
Matrix4 cameraTransform = camera.CameraInstance->GetTransformRotation();
|
|
camera.CameraInstance->Translation = transform.GlobalTranslation;
|
|
|
|
const auto& globalRotation = transform.GetGlobalRotation();
|
|
auto& forward = QuatToDirection(globalRotation);
|
|
//forward *= -1.0;
|
|
camera.CameraInstance->SetDirection(forward);
|
|
}
|
|
}
|
|
}
|