#include "Scene3DTest.h"

#include "ui/CocosGUI.h"
#include "renderer/CCRenderState.h"
#include <spine/spine-cocos2dx.h>

#include "../testResource.h"
#include "../TerrainTest/TerrainTest.h"

USING_NS_CC;
using namespace spine;

class SkeletonAnimationCullingFix : public SkeletonAnimation
{
public:
    SkeletonAnimationCullingFix(const std::string& skeletonDataFile, const std::string& atlasFile, float scale)
    : SkeletonAnimation(skeletonDataFile, atlasFile, scale)
    {}
    
    virtual void drawSkeleton (const cocos2d::Mat4& transform, uint32_t transformFlags) override
    {
        glDisable(GL_CULL_FACE);
        SkeletonAnimation::drawSkeleton(transform, transformFlags);
        RenderState::StateBlock::invalidate(cocos2d::RenderState::StateBlock::RS_ALL_ONES);
    }
    
    static SkeletonAnimationCullingFix* createWithFile (const std::string& skeletonDataFile, const std::string& atlasFile, float scale = 1)
    {
        SkeletonAnimationCullingFix* node = new SkeletonAnimationCullingFix(skeletonDataFile, atlasFile, scale);
        node->autorelease();
        return node;
    }
};

////////////////////////////////////////////////////////////////////////////////
// Declare Scene3DTestScene

/** Scene3DTestScene designed for test 2D-3D mixed render for common 3D game usage.
 *
 *  Scene has three logic sub scenes:
 *  -   World scene for maintain 3D game world objects, there are two cameras in this
 *      scene, one for skybox, another for other 3D models.
 *  -   UI scene, the root scene, maintain a menu in main UI.
 *  -   Dialog scene maintain two dialogs, which has 3D models on it and another
 *      2D elements above on 3D models, there are three cameras for them.
 *  -   OSD scene, maintain the UI element, like the description dialog, above
 *  -   on other elements.
 */
class Scene3DTestScene : public TestCase
{
public:
    CREATE_FUNC(Scene3DTestScene);
    
    bool onTouchBegan(Touch* touch, Event* event) { return true; }
    void onTouchEnd(Touch*, Event*);
    
private:
    Scene3DTestScene();
    virtual ~Scene3DTestScene();
    bool init() override;
    
    void createWorld3D();
    void createUI();
    void createPlayerDlg();
    void createDetailDlg();
    void createDescDlg();
    
    // init in init()
    std::vector<Camera *> _gameCameras;
    Node* _worldScene;
    Node* _dlgScene;
    Node* _osdScene;
    
    // init in createWorld3D()
    TextureCube*        _textureCube;
    Skybox*             _skyBox;
    cocos2d::Terrain*   _terrain;
    Player *            _player;
    Node*               _monsters[2];
    
    // init in createUI()
    Node* _playerItem;
    Node* _detailItem;
    Node* _descItem;
    Node* _ui;
    
    // init in createPlayerDlg()
    Node* _playerDlg;
    // init in createDetailDlg()
    Node* _detailDlg;
    // init in createDescDlg()
    Node* _descDlg;
    enum SkinType
    {
        HAIR = 0,
        GLASSES,
        FACE,
        UPPER_BODY,
        HAND,
        PANTS,
        SHOES,
        MAX_TYPE,
    };
    
    std::vector<std::string> _skins[(int)SkinType::MAX_TYPE]; //all skins
    int                      _curSkin[(int)SkinType::MAX_TYPE]; //current skin index
    cocos2d::Sprite3D* _reskinGirl;
    
    // for capture screen
    static const int SNAPSHOT_TAG = 119;
    std::string _snapshotFile;
};

/** Define the sub scenes in test. */
enum GAME_SCENE {
    SCENE_UI = 0,
    SCENE_WORLD,
    SCENE_DIALOG,
    SCENE_OSD,
    SCENE_COUNT,
};

/** Define the layers in scene, layer seperated by camera mask. */
enum SCENE_LAYER {
    LAYER_BACKGROUND = 0,
    LAYER_DEFAULT,
    LAYER_MIDDLE,
    LAYER_TOP,
    LAYER_COUNT,
};

/** Define the all cameras, which in Scene3DTest, render order. */
enum GAME_CAMERAS_ORDER {
    CAMERA_WORLD_3D_SKYBOX = 0,
    CAMERA_WORLD_3D_SCENE,
    CAMERA_UI_2D,
    CAMERA_DIALOG_2D_BASE,
    CAMERA_DIALOG_3D_MODEL,
    CAMERA_DIALOG_2D_ABOVE,
    CAMERA_OSD_2D_BASE,
    CAMERA_OSD_3D_MODEL,
    CAMERA_OSD_2D_ABOVE,
    CAMERA_COUNT,
};

/*
 Defined s_CF and s_CM to avoid force convertion when call Camera::setCameraFlag
 and Node::setCameraMask.
 
 Useage:
 -   Camera::setCameraFlag(s_CF[<SCENE_LAYER_INDEX>]);
 -   Node::setCameraMask(s_CM[<SCENE_LAYER_INDEX>]);
 
 Note:
 For LAYER_DEFAULT, we use CameraFlag::DEFAULT, thus we don't need to set
 camera flag/mask for this layer, for other layers we must to set camera
 flag/mask to distinguish between each other.
 */
static CameraFlag s_CF[LAYER_COUNT] =
{
    CameraFlag::USER1,      //  LAYER_BACKGROUND
    CameraFlag::DEFAULT,    //  LAYER_DEFAULT
    CameraFlag::USER3,      //  LAYER_MIDDLE
    CameraFlag::USER4,      //  LAYER_TOP
};

static unsigned short s_CM[LAYER_COUNT] =
{
    (unsigned short)s_CF[0],
    (unsigned short)s_CF[1],
    (unsigned short)s_CF[2],
    (unsigned short)s_CF[3],
};

static const char * s_CameraNames[CAMERA_COUNT] =
{
    "World 3D Skybox",
    "World 3D Scene",
    "UI 2D",
    "Dialog 2D Base",
    "Dialog 3D Model",
    "Dialog 2D Above",
    "OSD 2D Base",
    "OSD 3D Model",
    "OSD 2D Above"
};

/** The scenes, located in different position, won't see each other. */
static Vec3 s_scenePositons[SCENE_COUNT] = {
    Vec3(0, 0, 0),          //  center  :   UI scene
    Vec3(0, 10000, 0),      //  top     :   World sub scene
    Vec3(10000, 0, 0),      //  right   :   Dialog sub scene
    Vec3(0, -10000, 0),     //  bottom  :   OSD sub scene
};

////////////////////////////////////////////////////////////////////////////////
// Implements Scene3DTestScene

Scene3DTestScene::Scene3DTestScene()
: _worldScene(nullptr)
, _dlgScene(nullptr)
, _osdScene(nullptr)
, _textureCube(nullptr)
, _skyBox(nullptr)
, _terrain(nullptr)
, _player(nullptr)
, _playerItem(nullptr)
, _detailItem(nullptr)
, _descItem(nullptr)
, _ui(nullptr)
, _playerDlg(nullptr)
, _detailDlg(nullptr)
, _descDlg(nullptr)
{
    _monsters[0] = _monsters[1] = nullptr;
}

Scene3DTestScene::~Scene3DTestScene()
{
}

bool Scene3DTestScene::init()
{
    bool ret = false;
    do
    {
        CC_BREAK_IF(false == TestCase::init());

        // prepare for camera creation, we need several custom cameras
        _gameCameras.resize(CAMERA_COUNT);
        auto visibleSize = Director::getInstance()->getVisibleSize();
        Camera *ca = nullptr;   // temp variable
        
        ////////////////////////////////////////////////////////////////////////
        // create world 3D scene, this scene has two camera
        _worldScene = Node::create();
        // create a camera to look the skybox
        ca = _gameCameras[CAMERA_WORLD_3D_SKYBOX] =
            Camera::createPerspective(60,
                                      visibleSize.width / visibleSize.height,
                                      10,
                                      1000);
        ca->setDepth(CAMERA_WORLD_3D_SKYBOX);
        ca->setName(s_CameraNames[CAMERA_WORLD_3D_SKYBOX]);
        ca->setCameraFlag(s_CF[LAYER_BACKGROUND]);
        ca->setPosition3D(Vec3(0.f, 0.f, 50.f));
        _worldScene->addChild(ca);
        // create a camera to look the 3D models in world 3D scene
        ca = _gameCameras[CAMERA_WORLD_3D_SCENE] =
            Camera::createPerspective(60,
                                      visibleSize.width/visibleSize.height,
                                      0.1,
                                      200);
        ca->setDepth(CAMERA_WORLD_3D_SCENE);
        ca->setName(s_CameraNames[CAMERA_WORLD_3D_SCENE]);
        _worldScene->addChild(ca);
        // create 3D objects and add to world scene
        createWorld3D();
        _worldScene->addChild(_skyBox);
        _worldScene->addChild(_terrain);
        _worldScene->addChild(_player);
        _worldScene->addChild(_monsters[0]);
        _worldScene->addChild(_monsters[1]);
        // move camera above player
        ca->setPosition3D(_player->getPosition3D()+Vec3(0, 45, 60));
        ca->setRotation3D(Vec3(-45,0,0));
        _worldScene->setPosition3D(s_scenePositons[SCENE_WORLD]);
        this->addChild(_worldScene);
        
        ////////////////////////////////////////////////////////////////////////
        // test scene is UI scene, use default camera
        // use the default camera to look 2D base UI layer
        ca = _gameCameras[CAMERA_UI_2D] = this->getDefaultCamera();
        ca->setDepth(CAMERA_UI_2D);
        ca->setName(s_CameraNames[CAMERA_UI_2D]);
        // create UI element and add to ui scene
        createUI();
        this->addChild(_ui);
        
        ////////////////////////////////////////////////////////////////////////
        // create dialog scene, this scene has two dialog and three cameras
        _dlgScene = Node::create();
        // use default camera to render the base 2D elements
        ca = _gameCameras[CAMERA_DIALOG_2D_BASE] = Camera::create();
        ca->setDepth(CAMERA_DIALOG_2D_BASE);
        ca->setName(s_CameraNames[CAMERA_DIALOG_2D_BASE]);
        _dlgScene->addChild(ca);
        // create a camera to look the 3D model in dialog scene
        ca = _gameCameras[CAMERA_DIALOG_3D_MODEL] = Camera::create();
        ca->setDepth(CAMERA_DIALOG_3D_MODEL);
        ca->setName(s_CameraNames[CAMERA_DIALOG_3D_MODEL]);
        ca->setCameraFlag(s_CF[LAYER_MIDDLE]);
        _dlgScene->addChild(ca);
        // create a camera to look the UI element over on the 3D models
        ca = _gameCameras[CAMERA_DIALOG_2D_ABOVE] = Camera::create();
        ca->setDepth(CAMERA_DIALOG_2D_ABOVE);
        ca->setName(s_CameraNames[CAMERA_DIALOG_2D_ABOVE]);
        ca->setCameraFlag(s_CF[LAYER_TOP]);
        _dlgScene->addChild(ca);
        // create dialogs and add to dialog scene
        createPlayerDlg();
        _dlgScene->addChild(_playerDlg);
        createDetailDlg();
        _dlgScene->addChild(_detailDlg);
        // add dialog scene to test scene, which can't see the other element
        _dlgScene->setPosition3D(s_scenePositons[SCENE_DIALOG]);
        this->addChild(_dlgScene);

        ////////////////////////////////////////////////////////////////////////
        // create description scene, this scene has a dialog and three cameras
        _osdScene = Node::create();
        // use default camera for render 2D element
        ca = _gameCameras[CAMERA_OSD_2D_BASE] = Camera::create();
        ca->setDepth(CAMERA_OSD_2D_BASE);
        ca->setName(s_CameraNames[CAMERA_OSD_2D_BASE]);
        _osdScene->addChild(ca);
        // create a camera to look the 3D model in dialog scene
        ca = _gameCameras[CAMERA_OSD_3D_MODEL] = Camera::create();
        ca->setDepth(CAMERA_OSD_3D_MODEL);
        ca->setName(s_CameraNames[CAMERA_OSD_3D_MODEL]);
        ca->setCameraFlag(s_CF[LAYER_MIDDLE]);
        _osdScene->addChild(ca);
        // create a camera to look the UI element over on the 3D models
        ca = _gameCameras[CAMERA_OSD_2D_ABOVE] = Camera::create();
        ca->setDepth(CAMERA_OSD_2D_ABOVE);
        ca->setName(s_CameraNames[CAMERA_OSD_2D_ABOVE]);
        ca->setCameraFlag(s_CF[LAYER_TOP]);
        _osdScene->addChild(ca);
        // create desc dialog and add to osd scene
        createDescDlg();
        _osdScene->addChild(_descDlg);
        // add osd scene to test scene, which can't see the other elements
        _osdScene->setPosition3D(s_scenePositons[SCENE_OSD]);
        this->addChild(_osdScene);

        _playerDlg->setVisible(false);
        _detailDlg->setVisible(false);
        _descDlg->setVisible(false);

        ////////////////////////////////////////////////////////////////////////
        // add touch envent callback
        auto listener = EventListenerTouchOneByOne::create();
        listener->onTouchBegan = CC_CALLBACK_2(Scene3DTestScene::onTouchBegan, this);
        listener->onTouchEnded = CC_CALLBACK_2(Scene3DTestScene::onTouchEnd, this);
        _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);

        ret = true;
    } while (0);
    
    return ret;
}

void Scene3DTestScene::createWorld3D()
{
    // create skybox
    //create and set our custom shader
    auto shader = GLProgram::createWithFilenames("Sprite3DTest/cube_map.vert",
                                                 "Sprite3DTest/cube_map.frag");
    auto state = GLProgramState::create(shader);
    
    // create the second texture for cylinder
    _textureCube = TextureCube::create("Sprite3DTest/skybox/left.jpg",
                                       "Sprite3DTest/skybox/right.jpg",
                                       "Sprite3DTest/skybox/top.jpg",
                                       "Sprite3DTest/skybox/bottom.jpg",
                                       "Sprite3DTest/skybox/front.jpg",
                                       "Sprite3DTest/skybox/back.jpg");
    //set texture parameters
    Texture2D::TexParams tRepeatParams;
    tRepeatParams.magFilter = GL_LINEAR;
    tRepeatParams.minFilter = GL_LINEAR;
    tRepeatParams.wrapS = GL_MIRRORED_REPEAT;
    tRepeatParams.wrapT = GL_MIRRORED_REPEAT;
    _textureCube->setTexParameters(tRepeatParams);
    
    // pass the texture sampler to our custom shader
    state->setUniformTexture("u_cubeTex", _textureCube);
    
    // add skybox
    _skyBox = Skybox::create();
    _skyBox->setCameraMask(s_CM[LAYER_BACKGROUND]);
    _skyBox->setTexture(_textureCube);
    _skyBox->setScale(700.f);

    // create terrain
    Terrain::DetailMap r("TerrainTest/dirt.jpg");
    Terrain::DetailMap g("TerrainTest/Grass2.jpg",10);
    Terrain::DetailMap b("TerrainTest/road.jpg");
    Terrain::DetailMap a("TerrainTest/GreenSkin.jpg",20);
    Terrain::TerrainData data("TerrainTest/heightmap16.jpg",
                              "TerrainTest/alphamap.png",
                              r,g,b,a,Size(32,32),40.0f,2);
    _terrain = Terrain::create(data,Terrain::CrackFixedType::SKIRT);
    _terrain->setMaxDetailMapAmount(4);
    _terrain->setDrawWire(false);
    
    _terrain->setSkirtHeightRatio(3);
    _terrain->setLODDistance(64,128,192);
    
    // create player
    _player = Player::create("Sprite3DTest/girl.c3b",
                             _gameCameras[CAMERA_WORLD_3D_SCENE],
                             _terrain);
    _player->setScale(0.08);
    _player->setPositionY(_terrain->getHeight(_player->getPositionX(),
                                              _player->getPositionZ()));
    
    auto animation = Animation3D::create("Sprite3DTest/girl.c3b","Take 001");
    if (animation)
    {
        auto animate = Animate3D::create(animation);
        _player->runAction(RepeatForever::create(animate));
    }
    // add a particle 3d above player
    auto rootps =
        PUParticleSystem3D::create("Particle3D/scripts/blackHole.pu",
                                   "Particle3D/materials/pu_mediapack_01.material");
    rootps->setScale(2);
    rootps->setPosition3D(Vec3(0, 150, 0));
    auto moveby = MoveBy::create(2.0f, Vec2(50.0f, 0.0f));
    auto moveby1 = MoveBy::create(2.0f, Vec2(-50.0f, 0.0f));
    rootps->runAction(RepeatForever::create(Sequence::create(moveby, moveby1, nullptr)));
    rootps->startParticleSystem();
    
    _player->addChild(rootps, 0);
    
    // add BillBoard for test blend
    auto billboard = BillBoard::create("Images/btn-play-normal.png");
    billboard->setPosition3D(Vec3(0,180,0));
    _player->addChild(billboard);
    
    // create two Sprite3D monster, one is transparent
    auto monster = Sprite3D::create("Sprite3DTest/orc.c3b");
    monster->setRotation3D(Vec3(0,180,0));
    monster->setPosition3D(_player->getPosition3D() + Vec3(50, -10, 0));
    monster->setOpacity(128);
    _monsters[0] = monster;
    monster = Sprite3D::create("Sprite3DTest/orc.c3b");
    monster->setRotation3D(Vec3(0,180,0));
    monster->setPosition3D(_player->getPosition3D() + Vec3(-50, -5, 0));
    _monsters[1] = monster;
}

void Scene3DTestScene::createUI()
{
    _ui = Layer::create();
    
    // first, add menu to ui
    // create player button
    auto showPlayerDlgItem = MenuItemImage::create("Images/Pea.png",
                                                   "Images/Pea.png",
                                                   [this](Ref* sender){
        this->_playerDlg->setVisible(!this->_playerDlg->isVisible());
    });
    showPlayerDlgItem->setName("showPlayerDlgItem");
    showPlayerDlgItem->setPosition(VisibleRect::left().x + 30, VisibleRect::top().y - 30);
    
    // create discription button
    TTFConfig ttfConfig("fonts/arial.ttf", 20);
    auto descItem = MenuItemLabel::create(Label::createWithTTF(ttfConfig, "Description"),
                                          [this](Ref* sender)
    {
        if (this->_descDlg->isVisible())
        {
            // hide descDlg
            _descDlg->setVisible(false);
        }
        else
        {
            // animate show descDlg
            _descDlg->setVisible(true);
            _descDlg->setScale(0);
            _descDlg->runAction(ScaleTo::create(2, 1.0));
        }
    });
    descItem->setName("descItem");
    descItem->setPosition(Vec2(VisibleRect::right().x - 50, VisibleRect::top().y - 25));

    auto menu = Menu::create(showPlayerDlgItem,
                             descItem,
                             nullptr);
    menu->setPosition(Vec2::ZERO);
    _ui->addChild(menu);
    
    // second, add cameras control button to ui
    auto createCameraButton = [this](int tag, const char* text)-> Node *
    {
        auto cb = ui::CheckBox::create("cocosui/check_box_normal.png",
                                       "cocosui/check_box_normal_press.png",
                                       "cocosui/check_box_active.png",
                                       "cocosui/check_box_normal_disable.png",
                                       "cocosui/check_box_active_disable.png");
        cb->setTag(tag);
        cb->setSelected(true);
        if (text) cb->setName(text);
        cb->setAnchorPoint(Vec2(0, 0.5));
        cb->setScale(0.8);
        cb->addClickEventListener([this](Ref* sender)
            {
                auto index = static_cast<Node *>(sender)->getTag();
                auto camera = this->_gameCameras[index];
                camera->setVisible(!camera->isVisible());
            });
        if (text)
        {
            auto label = ui::Text::create();
            label->setString(text);
            label->setAnchorPoint(Vec2(0, 0));
            label->setPositionX(cb->getContentSize().width);
            cb->addChild(label);
        }
        return cb;
    };
    
    Vec2 pos = VisibleRect::leftBottom();
    pos.y += 30;
    float stepY = 25;
    for (int i = CAMERA_COUNT - 1; i >= 0; --i)
    {
        // if hide CAMERA_UI_2D, the menu won't show again
        // so skip it
        if (CAMERA_UI_2D == i)
        {
            continue;
        }
        auto cameraBtn = createCameraButton(i, s_CameraNames[i]);
        cameraBtn->setPosition(pos);
        _ui->addChild(cameraBtn);
        pos.y += stepY;
    }
    auto labelCameras = ui::Text::create();
    labelCameras->setString("Cameras");
    labelCameras->setAnchorPoint(Vec2(0, 0));
    labelCameras->setPosition(pos);
    _ui->addChild(labelCameras);
}

void Scene3DTestScene::createPlayerDlg()
{
    SpriteFrameCache::getInstance()->addSpriteFramesWithFile(s_s9s_ui_plist);
    
    Size dlgSize(190, 240);
    Vec2 pos = VisibleRect::center();
    float margin = 10;
    
    // first, create dialog ui part, include background, title and buttons
    _playerDlg = ui::Scale9Sprite::createWithSpriteFrameName("button_actived.png");
    _playerDlg->setContentSize(dlgSize);
    _playerDlg->setAnchorPoint(Vec2(1, 0.5));
    pos.y -= margin;
    pos.x -= margin;
    _playerDlg->setPosition(pos);
    
    // title
    auto title = Label::createWithTTF("Player Dialog","fonts/arial.ttf",16);
    title->setPosition(dlgSize.width / 2, dlgSize.height - margin * 2);
    _playerDlg->addChild(title);
    
    // player background
    Size bgSize(110, 180);
    Vec2 bgPos(margin, dlgSize.height / 2 - margin);
    auto playerBg = ui::Scale9Sprite::createWithSpriteFrameName("item_bg.png");
    playerBg->setContentSize(bgSize);
    playerBg->setAnchorPoint(Vec2(0, 0.5));
    playerBg->setPosition(bgPos);
    _playerDlg->addChild(playerBg);

    // item background and item
    Size itemSize(48, 48);
    Vec2 itemAnchor(0, 1);
    Vec2 itemPos(bgPos.x + bgSize.width + margin, bgPos.y + bgSize.height / 2);
    auto itemBg = ui::Scale9Sprite::createWithSpriteFrameName("item_bg.png");
    itemBg->setContentSize(itemSize);
    itemBg->setAnchorPoint(itemAnchor);
    itemBg->setPosition(itemPos);
    _playerDlg->addChild(itemBg);
    
    auto item = ui::Button::create("crystal.png", "", "", ui::Widget::TextureResType::PLIST);
    item->setTitleText("Crystal");
    item->setScale(1.5);
    item->setAnchorPoint(itemAnchor);
    item->setPosition(itemPos);
    item->addClickEventListener([this](Ref* sender){
        this->_detailDlg->setVisible(!this->_detailDlg->isVisible());
    });
    _playerDlg->addChild(item);
    
    // second, add 3d actor, which on dialog layer
    std::string filename = "Sprite3DTest/girl.c3b";
    auto girl = Sprite3D::create(filename);
    girl->setScale(0.5);
    girl->setPosition(bgSize.width / 2, margin * 2);
    girl->setCameraMask(s_CM[LAYER_MIDDLE]);
    playerBg->addChild(girl);

    // third, add zoom in/out button, which is 2d ui element and over 3d actor
    ui::Button* zoomIn = ui::Button::create("cocosui/animationbuttonnormal.png",
                                    "cocosui/animationbuttonpressed.png");
    zoomIn->setScale(0.5);
    zoomIn->setAnchorPoint(Vec2(1, 1));
    zoomIn->setPosition(Vec2(bgSize.width / 2 - margin / 2, bgSize.height - margin));
    zoomIn->addClickEventListener([girl](Ref* sender){
        girl->setScale(girl->getScale() * 2);
    });
    zoomIn->setTitleText("Zoom In");
    zoomIn->setName("Zoom In");
    zoomIn->setCameraMask(s_CM[LAYER_TOP]);
    playerBg->addChild(zoomIn);

    ui::Button* zoomOut = ui::Button::create("cocosui/animationbuttonnormal.png",
                                            "cocosui/animationbuttonpressed.png");
    zoomOut->setScale(0.5);
    zoomOut->setAnchorPoint(Vec2(0, 1));
    zoomOut->setPosition(Vec2(bgSize.width / 2 + margin / 2, bgSize.height - margin));
    zoomOut->addClickEventListener([girl](Ref* sender){
        girl->setScale(girl->getScale() / 2);
    });
    zoomOut->setTitleText("Zoom Out");
    zoomOut->setName("Zoom Out");
    zoomOut->setCameraMask(s_CM[LAYER_TOP]);
    playerBg->addChild(zoomOut);
    
    // forth, add slider bar
    ui::Slider* slider = ui::Slider::create("cocosui/slidbar.png", "cocosui/sliderballnormal.png");
    slider->setScale9Enabled(true);
    slider->setPosition(Vec2(bgSize.width / 2, margin));
    slider->setContentSize(Size(bgSize.width - margin, slider->getContentSize().height));
    slider->addEventListener([girl, slider](Ref* sender,ui::Slider::EventType type)
    {
        girl->setRotation3D(Vec3(0, 360 * slider->getPercent() / 100, 0));
    });
    slider->setName("Slider");
    slider->setCameraMask(s_CM[LAYER_TOP]);
    playerBg->addChild(slider);
}

void Scene3DTestScene::createDetailDlg()
{
    SpriteFrameCache::getInstance()->addSpriteFramesWithFile(s_s9s_ui_plist);
    
    Size dlgSize(190, 240);
    Vec2 pos = VisibleRect::center();
    float margin = 10;
    
    // create dialog
    _detailDlg = ui::Scale9Sprite::createWithSpriteFrameName("button_actived.png");
    _detailDlg->setContentSize(dlgSize);
    _detailDlg->setAnchorPoint(Vec2(0, 0.5));
    _detailDlg->setOpacity(224);
    pos.y -= margin;
    pos.x += margin;
    _detailDlg->setPosition(pos);
    
    // title
    auto title = Label::createWithTTF("Detail Dialog","fonts/arial.ttf",16);
    title->setPosition(dlgSize.width / 2, dlgSize.height - margin * 2);
    _detailDlg->addChild(title);

    
    // add capture screen buttons
    ui::Button* capture = ui::Button::create("cocosui/animationbuttonnormal.png",
                                             "cocosui/animationbuttonpressed.png");
    capture->setScale(0.5);
    capture->setAnchorPoint(Vec2(0.5, 0));
    capture->setPosition(Vec2(dlgSize.width / 3, margin));
    capture->addClickEventListener([this](Ref* sender)
    {
        Director::getInstance()->getTextureCache()->removeTextureForKey(_snapshotFile);
        _osdScene->removeChildByTag(SNAPSHOT_TAG);
        _snapshotFile = "CaptureScreenTest.png";
        utils::captureScreen([this](bool succeed, const std::string& outputFile)
        {
            if (!succeed)
            {
                log("Capture screen failed.");
                return;
            }
            auto sp = Sprite::create(outputFile);
            _osdScene->addChild(sp, 0, SNAPSHOT_TAG);
            Size s = Director::getInstance()->getWinSize();
            sp->setPosition(s.width / 2, s.height / 2);
            sp->setScale(0.25);
            _snapshotFile = outputFile;
        }, _snapshotFile);
    });
    capture->setTitleText("Take Snapshot");
    capture->setName("Take Snapshot");
    _detailDlg->addChild(capture);
    
    ui::Button* remove = ui::Button::create("cocosui/animationbuttonnormal.png",
                                            "cocosui/animationbuttonpressed.png");
    remove->setScale(0.5);
    remove->setAnchorPoint(Vec2(0.5, 0));
    remove->setPosition(Vec2(dlgSize.width * 2 / 3, margin));
    remove->addClickEventListener([this](Ref* sender)
    {
        _osdScene->removeChildByTag(SNAPSHOT_TAG);
    });
    remove->setTitleText("Del Snapshot");
    remove->setName("Del Snapshot");
    _detailDlg->addChild(remove);
    
    // add a spine ffd animation on it
    auto skeletonNode =
        SkeletonAnimationCullingFix::createWithFile("spine/goblins-ffd.json",
                                          "spine/goblins-ffd.atlas",
                                          1.5f);
    skeletonNode->setAnimation(0, "walk", true);
    skeletonNode->setSkin("goblin");
    
    skeletonNode->setScale(0.25);
    Size windowSize = Director::getInstance()->getWinSize();
    skeletonNode->setPosition(Vec2(dlgSize.width / 2, remove->getContentSize().height / 2 + 2 * margin));
    _detailDlg->addChild(skeletonNode);
}

void Scene3DTestScene::createDescDlg()
{
    SpriteFrameCache::getInstance()->addSpriteFramesWithFile(s_s9s_ui_plist);
    
    Size dlgSize(440, 240);
    Vec2 pos = VisibleRect::center();
    float margin = 10;
    
    // first, create dialog, add title and description text on it
    _descDlg = ui::Scale9Sprite::createWithSpriteFrameName("button_actived.png");
    _descDlg->setContentSize(dlgSize);
    _descDlg->setOpacity(224);
    _descDlg->setPosition(pos);
    
    // title
    auto title = Label::createWithTTF("Description Dialog","fonts/arial.ttf",16);
    title->setPosition(dlgSize.width / 2, dlgSize.height - margin * 2);
    _descDlg->addChild(title);

    // add a label to retain description text
    Size textSize(400, 220);
    Vec2 textPos(margin, dlgSize.height - (20 + margin));
    std::string desc = std::string(
    "    Scene 3D test for 2D and 3D mix rendering.\n"
    "- Game world composite with terrain, skybox and 3D objects.\n"
    "- UI composite with 2D nodes.\n"
    "- Click the icon at the topleft conner, will show a player dialog which "
    "there is a 3D sprite on it.\n"
    "- There are two button to zoom the player model, which should keep above "
    "on 3D model.\n"
    " - This description dialog should above all other elements.\n"
    "\n"
    "    Game scene composite with root scene and three sub scene. These scene "
    " located at different location, they can't see each other.\n"
    "- Root scene contains ui layer\n"
    "- World scene contains skybox and 3d scene.\n"
    "- Dialog scene contains actor dialog and detail dialog.\n"
    "- OSD scene contains description dialog.\n"
    "\n"
    "Click \"Description\" button to hide this dialog.\n");
    auto text = Label::createWithSystemFont(desc, "", 9, textSize);
    text->setAnchorPoint(Vec2(0, 1));
    text->setPosition(textPos);
    _descDlg->addChild(text);
    
    // second, add a 3D model
    std::string fileName = "Sprite3DTest/ReskinGirl.c3b";
    Vec2 girlPos(textPos.x + textSize.width - 40, margin);
    _reskinGirl = Sprite3D::create(fileName);
    _reskinGirl->setCameraMask(s_CM[LAYER_MIDDLE]);
    _reskinGirl->setScale(2.5);
    _reskinGirl->setPosition(girlPos);
    _descDlg->addChild(_reskinGirl);
    auto animation = Animation3D::create(fileName);
    if (animation)
    {
        auto animate = Animate3D::create(animation);
        
        _reskinGirl->runAction(RepeatForever::create(animate));
    }
    
    auto& body = _skins[(int)SkinType::UPPER_BODY];
    body.push_back("Girl_UpperBody01");
    body.push_back("Girl_UpperBody02");
    
    auto& pants = _skins[(int)SkinType::PANTS];
    pants.push_back("Girl_LowerBody01");
    pants.push_back("Girl_LowerBody02");
    
    auto& shoes = _skins[(int)SkinType::SHOES];
    shoes.push_back("Girl_Shoes01");
    shoes.push_back("Girl_Shoes02");
    
    auto& hair = _skins[(int)SkinType::HAIR];
    hair.push_back("Girl_Hair01");
    hair.push_back("Girl_Hair02");
    
    auto& face = _skins[(int)SkinType::FACE];
    face.push_back("Girl_Face01");
    face.push_back("Girl_Face02");
    
    auto& hand = _skins[(int)SkinType::HAND];
    hand.push_back("Girl_Hand01");
    hand.push_back("Girl_Hand02");
    
    auto& glasses = _skins[(int)SkinType::GLASSES];
    glasses.push_back("");
    glasses.push_back("Girl_Glasses01");
    
    memset(_curSkin, 0, (int)SkinType::MAX_TYPE * sizeof(int));
    
    auto applyCurSkin = [this]()
    {
        for (ssize_t i = 0; i < this->_reskinGirl->getMeshCount(); i++) {
            auto mesh = this->_reskinGirl->getMeshByIndex(static_cast<int>(i));
            bool isVisible = false;
            for (int j = 0; j < (int)SkinType::MAX_TYPE; j++) {
                if (mesh->getName() == _skins[j].at(_curSkin[j]))
                {
                    isVisible = true;
                    break;
                }
            }
            this->_reskinGirl->getMeshByIndex(static_cast<int>(i))->setVisible(isVisible);
        }
    };
    applyCurSkin();
    
    // third, add reskin buttons above 3D model
    static const std::string btnTexts[SkinType::MAX_TYPE] =
    {
        "Hair",
        "Glasses",
        "Face",
        "Coat",
        "Hand",
        "Pants",
        "Shoes",
    };
    Vec2 btnPos(dlgSize.width - margin, margin);
    for (int i = SkinType::MAX_TYPE - 1; i >= 0; --i) {
        auto btn = ui::Button::create("cocosui/animationbuttonnormal.png",
                                      "cocosui/animationbuttonpressed.png");
        btn->setScale(0.5);
        btn->setTag(i);
        btn->setAnchorPoint(Vec2(1, 0));
        btn->setPosition(btnPos);
        btnPos.y += 20;
        btn->addClickEventListener([this, applyCurSkin](Ref* sender)
        {
            auto index = static_cast<Node *>(sender)->getTag();
            if (index < SkinType::MAX_TYPE)
            {
                _curSkin[index] = (_curSkin[index] + 1) % _skins[index].size();
                applyCurSkin();
            }
        });
        btn->setTitleText(btnTexts[i]);
        btn->setCameraMask(s_CM[LAYER_TOP]);
        _descDlg->addChild(btn);
    }
}

void Scene3DTestScene::onTouchEnd(Touch* touch, Event* event)
{
    auto location = touch->getLocation();
    auto camera = _gameCameras[CAMERA_WORLD_3D_SCENE];
    if(camera != Camera::getVisitingCamera())
    {
        return;
    }

    if(_player)
    {
        Vec3 nearP(location.x, location.y, 0.0f), farP(location.x, location.y, 1.0f);
        // first, convert screen touch location to the world location on near and far plane
        auto size = Director::getInstance()->getWinSize();
        camera->unprojectGL(size, &nearP, &nearP);
        camera->unprojectGL(size, &farP, &farP);
        // second, convert world location to terrain's local position on near/far plane
        auto worldToNodeMat = _terrain->getNodeToWorldTransform();
        worldToNodeMat.inverse();
        worldToNodeMat.transformPoint(&nearP);
        worldToNodeMat.transformPoint(&farP);
        // create a ray from point which on near plane to point which on far plane
        Vec3 dir = farP - nearP;
        dir.normalize();
        Vec3 rayStep = 15*dir;
        Vec3 rayPos =  nearP;
        Vec3 rayStartPosition = nearP;
        Vec3 lastRayPosition =rayPos;
        rayPos += rayStep;
        // Linear search - Loop until find a point inside and outside the terrain Vector3
        float height = _terrain->getHeight(rayPos.x,rayPos.z);
        
        while (rayPos.y > height)
        {
            lastRayPosition = rayPos;
            rayPos += rayStep;
            height = _terrain->getHeight(rayPos.x,rayPos.z);
        }
        
        Vec3 startPosition = lastRayPosition;
        Vec3 endPosition = rayPos;
        
        for (int i= 0; i< 32; i++)
        {
            // Binary search pass
            Vec3 middlePoint = (startPosition + endPosition) * 0.5f;
            if (middlePoint.y < height)
                endPosition = middlePoint;
            else
                startPosition = middlePoint;
        }
        Vec3 collisionPoint = (startPosition + endPosition) * 0.5f;
        dir = collisionPoint - _player->getPosition3D();
        dir.y = 0;
        dir.normalize();
        _player->_headingAngle =  -1*acos(dir.dot(Vec3(0,0,-1)));
        dir.cross(dir,Vec3(0,0,-1),&_player->_headingAxis);
        _player->_targetPos=collisionPoint;
        _player->forward();
    }
    event->stopPropagation();
}

////////////////////////////////////////////////////////////////////////////////
// Implements Scene3DTests
Scene3DTests::Scene3DTests()
{
    ADD_TEST_CASE(Scene3DTestScene);
}