// Copyright (c) 2012-2021 Wojciech Figat. All rights reserved.

#include "ModelInstanceActor.h"
#include "Engine/Content/Assets/MaterialInstance.h"
#include "Engine/Level/Scene/SceneRendering.h"

ModelInstanceActor::ModelInstanceActor(const SpawnParams& params)
    : Actor(params)
{
}

void ModelInstanceActor::SetEntries(const Array<ModelInstanceEntry>& value)
{
    Entries.Resize(value.Count());
    for (int32 i = 0; i < value.Count(); i++)
        Entries[i] = value[i];
}

void ModelInstanceActor::SetMaterial(int32 entryIndex, MaterialBase* material)
{
    CHECK(entryIndex >= 0 && entryIndex < Entries.Count());
    Entries[entryIndex].Material = material;
}

MaterialInstance* ModelInstanceActor::CreateAndSetVirtualMaterialInstance(int32 entryIndex)
{
    auto material = Entries[entryIndex].Material.Get();
    CHECK_RETURN(material && !material->WaitForLoaded(), nullptr);
    const auto result = material->CreateVirtualInstance();
    Entries[entryIndex].Material = result;
    return result;
}

void ModelInstanceActor::OnLayerChanged()
{
    if (_sceneRenderingKey != -1)
        GetSceneRendering()->UpdateGeometry(this, _sceneRenderingKey);
}

void ModelInstanceActor::OnEnable()
{
    _sceneRenderingKey = GetSceneRendering()->AddGeometry(this);

    // Base
    Actor::OnEnable();
}

void ModelInstanceActor::OnDisable()
{
    GetSceneRendering()->RemoveGeometry(this, _sceneRenderingKey);

    // Base
    Actor::OnDisable();
}