#include "Actor.h"
#include "EngineFrame/Scene/Scene.h"
#include <algorithm>

Actor::Actor()
{
}

Actor::~Actor()
{
}

void Actor::Init()
{
}

void Actor::HandleEvents(SDL_Event *e)
{
}

void Actor::Update(float deltaTime)
{
    Actor_base::Update(deltaTime);
    RefPtr<Component> child = m_Components.GetFirst();
    while (child)
    {
        if (child->hasTag(Tag::UPDATE))
            child->Update(deltaTime);
        if (child->hasTag(Tag::RENDER))
        {
        }
        child = child->GetNext();
    }
}

void Actor::Render(float deltaTime)
{
    Actor_base::Render(deltaTime);
    RefPtr<Component> child = m_Components.GetFirst();
    while (child)
    {
        if (child->hasTag(Tag::RENDER))
            child->Render(deltaTime);
        child = child->GetNext();
    }
}

void Actor::Clear()
{
}

void Actor::OnAdded(Scene *scene)
{
    this->Parent = scene;
}

void Actor::ReorderActors()
{
    if (Parent)
    {
        RefPtr<Actor> me = this;
        Parent->m_Actors.Remove(me);
        RefPtr<Actor> sibling = Parent->m_Actors.GetLast();
        if (sibling && sibling->GetRenderZOrder() > RenderZOrder)
        {
            sibling = sibling->GetPrev();
            while (sibling)
            {
                if (sibling->GetRenderZOrder() <= RenderZOrder)
                    break;
                sibling = sibling->GetPrev();
            }
        }
        if (sibling)
        {
            Parent->m_Actors.InsertAfter(me, sibling);
        }
        else
        {
            Parent->m_Actors.PushFront(me);
        }
    }
}

void Actor::AddComponent(RefPtr<Component> Component)
{
    m_Components.PushBack(Component);
    Component->OnAdded(this);
    // 排序组件
    Component->ReorderComponents();
    // 如果组件有transform标签，则设置其位置
    if (Component->hasTag(Tag::TRANSFORM))
        Component->SetIterationPos(Pos);
}

void Actor::RemoveComponent(RefPtr<Component> Component)
{
    Component->Parent = nullptr;
    m_Components.Remove(Component);
}

void Actor::SetPos(VecPos pos)
{
    this->Pos = pos;
    RefPtr<Component> child = m_Components.GetFirst();
    while (child)
    {
        if (child->hasTag(Tag::TRANSFORM))
            child->SetIterationPos(pos);
        child = child->GetNext();
    }
}

VecPos Actor::GetPos()
{
    return this->Pos;
}

int Actor::GetRenderZOrder()
{
    return this->RenderZOrder;
}

void Actor::SetRenderZOrder(int zOrder)
{
    if(this->RenderZOrder != zOrder){
        this->RenderZOrder = zOrder;
        ReorderActors();
    }
}