axmol/tests/cpp-tests/Classes/Camera3DTest/Camera3DTest.cpp

/****************************************************************************
Copyright (c) 2012 cocos2d-x.org
Copyright (c) 2013-2014 Chukong Technologies Inc.

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#include "Camera3DTest.h"
#include <algorithm>
#include "../testResource.h"

#include "3d/CCDrawNode3D.h"
#include "3d/CCAttachNode.h"

enum
{
    IDC_NEXT = 100,
    IDC_BACK,
    IDC_RESTART
};

static int sceneIdx = -1;

static std::function<Layer*()> createFunctions[] =
{
    CL(Camera3DTestDemo),
};
#define MAX_LAYER    (sizeof(createFunctions) / sizeof(createFunctions[0]))

static Layer* nextSpriteTestAction()
{
    sceneIdx++;
    sceneIdx = sceneIdx % MAX_LAYER;
    auto layer = (createFunctions[sceneIdx])();
    return layer;
}

static Layer* backSpriteTestAction()
{
    sceneIdx--;
    int total = MAX_LAYER;
    if( sceneIdx < 0 )
        sceneIdx += total;

    auto layer = (createFunctions[sceneIdx])();
    return layer;
}

static Layer* restartSpriteTestAction()
{
    auto layer = (createFunctions[sceneIdx])();
    return layer;
}

//------------------------------------------------------------------
//
// SpriteTestDemo
//
//------------------------------------------------------------------

Camera3DTestDemo::Camera3DTestDemo(void)
: BaseTest()
, _camera(nullptr)
{
}
Camera3DTestDemo::~Camera3DTestDemo(void)
{
}
void Camera3DTestDemo::reachEndCallBack()
{
}
std::string Camera3DTestDemo::title() const
{
    return "Testing Camera";
}

std::string Camera3DTestDemo::subtitle() const
{
    return "";
}
void Camera3DTestDemo::scaleCameraCallback(Ref* sender,float value)
{
    if(_camera&& _cameraType!=CameraType::FirstCamera)
    {
        Vec3 cameraPos=  _camera->getPosition3D();
        cameraPos+= cameraPos.getNormalized()*value;
        _camera->setPosition3D(cameraPos);
    }
}	
void Camera3DTestDemo::rotateCameraCallback(Ref* sender,float value)
{
    if(_cameraType==CameraType::FreeCamera || _cameraType==CameraType::FirstCamera)
    {
        Vec3  rotation3D= _camera->getRotation3D();
        rotation3D.y+= value;
        _camera->setRotation3D(rotation3D);
    }
}
void Camera3DTestDemo::SwitchViewCallback(Ref* sender, CameraType cameraType)
{
    if(_cameraType==cameraType)
    {
        return ;
    }
    _cameraType = cameraType;
    if(_cameraType==CameraType::FreeCamera)
    {
         _camera->setPosition3D(Vec3(0, 130, 130) + _sprite3D->getPosition3D());
         _camera->lookAt(_sprite3D->getPosition3D(), Vec3(0,1,0));
    }
    else if(_cameraType==CameraType::FirstCamera)
    {
           Vec3 newFaceDir;
           _sprite3D->getWorldToNodeTransform().getForwardVector(&newFaceDir);
           newFaceDir.normalize();
           _camera->setPosition3D(Vec3(0,35,0) + _sprite3D->getPosition3D());
           _camera->lookAt(_sprite3D->getPosition3D() + newFaceDir*50, Vec3(0, 1, 0));
    }
    else if(_cameraType==CameraType::ThirdCamera)
    {
           _camera->setPosition3D(Vec3(0, 130, 130) + _sprite3D->getPosition3D());
           _camera->lookAt(_sprite3D->getPosition3D(), Vec3(0,1,0));
    }
}
void Camera3DTestDemo::onEnter()
{
    BaseTest::onEnter();
    _sprite3D=nullptr;
    auto s = Director::getInstance()->getWinSize();
    auto listener = EventListenerTouchAllAtOnce::create();
    listener->onTouchesBegan = CC_CALLBACK_2(Camera3DTestDemo::onTouchesBegan, this);
    listener->onTouchesMoved = CC_CALLBACK_2(Camera3DTestDemo::onTouchesMoved, this);
    listener->onTouchesEnded = CC_CALLBACK_2(Camera3DTestDemo::onTouchesEnded, this);
    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);
    auto layer3D=Layer::create();
    addChild(layer3D,0);
    _layer3D=layer3D;
    _curState=State_None;
    addNewSpriteWithCoords( Vec3(0,0,0),"Sprite3DTest/girl.c3b",true,0.2,true);
    TTFConfig ttfConfig("fonts/arial.ttf", 20);
    auto label1 = Label::createWithTTF(ttfConfig,"zoom out");
    auto menuItem1 = MenuItemLabel::create(label1, CC_CALLBACK_1(Camera3DTestDemo::scaleCameraCallback,this,1));
    auto label2 = Label::createWithTTF(ttfConfig,"zoom in");
    auto menuItem2 = MenuItemLabel::create(label2, CC_CALLBACK_1(Camera3DTestDemo::scaleCameraCallback,this,-1));
    auto label3 = Label::createWithTTF(ttfConfig,"rotate+");
    auto menuItem3 = MenuItemLabel::create(label3, CC_CALLBACK_1(Camera3DTestDemo::rotateCameraCallback,this,10));
    auto label4 = Label::createWithTTF(ttfConfig,"rotate-");
    auto menuItem4 = MenuItemLabel::create(label4, CC_CALLBACK_1(Camera3DTestDemo::rotateCameraCallback,this,-10));
    auto label5 = Label::createWithTTF(ttfConfig,"free ");
    auto menuItem5 = MenuItemLabel::create(label5, CC_CALLBACK_1(Camera3DTestDemo::SwitchViewCallback,this,CameraType::FreeCamera));
    auto label6 = Label::createWithTTF(ttfConfig,"third person");
    auto menuItem6 = MenuItemLabel::create(label6, CC_CALLBACK_1(Camera3DTestDemo::SwitchViewCallback,this,CameraType::ThirdCamera));
    auto label7 = Label::createWithTTF(ttfConfig,"first person");
    auto menuItem7 = MenuItemLabel::create(label7, CC_CALLBACK_1(Camera3DTestDemo::SwitchViewCallback,this,CameraType::FirstCamera));
    auto menu = Menu::create(menuItem1,menuItem2,menuItem3,menuItem4,menuItem5,menuItem6,menuItem7,NULL);

    menu->setPosition(Vec2::ZERO);
    menuItem1->setPosition( Vec2( s.width-50, VisibleRect::top().y-50 ) );
    menuItem2->setPosition( Vec2( s.width-50, VisibleRect::top().y-100) );
    menuItem3->setPosition( Vec2( s.width-50, VisibleRect::top().y-150) );
    menuItem4->setPosition( Vec2( s.width-50, VisibleRect::top().y-200) );
    menuItem5->setPosition( Vec2(VisibleRect::left().x+100, VisibleRect::top().y-50) );
    menuItem6->setPosition( Vec2(VisibleRect::left().x+100, VisibleRect::top().y -100));
    menuItem7->setPosition( Vec2(VisibleRect::left().x+100, VisibleRect::top().y -150));
    addChild(menu, 0);
    schedule(schedule_selector(Camera3DTestDemo::updateCamera), 0.0f);
    if (_camera == nullptr)
    {
        _camera=Camera::createPerspective(60, (GLfloat)s.width/s.height, 1, 1000);
        _camera->setCameraFlag(CameraFlag::USER1);
        _layer3D->addChild(_camera);
    }
    SwitchViewCallback(this,CameraType::ThirdCamera);
    DrawNode3D* line =DrawNode3D::create();
    //draw x
    for( int j =-20; j<=20 ;j++)
    {
        line->drawLine(Vec3(-100, 0, 5*j),Vec3(100,0,5*j),Color4F(1,0,0,1));
    }
    //draw z
    for( int j =-20; j<=20 ;j++)
    {
        line->drawLine(Vec3(5*j, 0, -100),Vec3(5*j,0,100),Color4F(0,0,1,1));
    }
    //draw y
    line->drawLine(Vec3(0, -50, 0),Vec3(0,0,0),Color4F(0,0.5,0,1));
    line->drawLine(Vec3(0, 0, 0),Vec3(0,50,0),Color4F(0,1,0,1));
    _layer3D->addChild(line);
    _layer3D->setCameraMask(2);
}
void Camera3DTestDemo::onExit()
{
    BaseTest::onExit();
    if (_camera)
    {
        _camera = nullptr;
    }
}

void Camera3DTestDemo::restartCallback(Ref* sender)
{
    auto s = new Camera3DTestScene();
    s->addChild(restartSpriteTestAction());

    Director::getInstance()->replaceScene(s);
    s->release();
}

void Camera3DTestDemo::nextCallback(Ref* sender)
{
    auto s = new Camera3DTestScene();
    s->addChild( nextSpriteTestAction() );
    Director::getInstance()->replaceScene(s);
    s->release();
}
void Camera3DTestDemo::backCallback(Ref* sender)
{
    auto s = new Camera3DTestScene();
    s->addChild( backSpriteTestAction() );
    Director::getInstance()->replaceScene(s);
    s->release();
}
void Camera3DTestDemo::addNewSpriteWithCoords(Vec3 p,std::string fileName,bool playAnimation,float scale,bool bindCamera)
{

    auto sprite = Sprite3D::create(fileName);
    sprite->setScale(1);
    _layer3D->addChild(sprite);
    float globalZOrder=sprite->getGlobalZOrder();
    sprite->setPosition3D( Vec3( p.x, p.y,p.z) );
    sprite->setGlobalZOrder(globalZOrder);
    if(playAnimation)
    {
        auto animation = Animation3D::create(fileName,"Take 001");
        if (animation)
        {
            auto animate = Animate3D::create(animation);
            bool inverse = (std::rand() % 3 == 0);

            int rand2 = std::rand();
            float speed = 1.0f;
            if(rand2 % 3 == 1)
            {
                speed = animate->getSpeed() + CCRANDOM_0_1();
            }
            else if(rand2 % 3 == 2)
            {
                speed = animate->getSpeed() - 0.5 * CCRANDOM_0_1();
            }
            animate->setSpeed(inverse ? -speed : speed);
            sprite->runAction(RepeatForever::create(animate));
            //auto sp = Sprite3D::create("Sprite3DTest/axe.c3b");
            // sprite->getAttachNode("Bip001 R Hand")->addChild(sp);
        }
    }
    if(bindCamera)
    {
        _sprite3D=sprite;
       // auto sp = Sprite3D::create("Sprite3DTest/axe.c3b");
      //  sp->setScale(3);
        //sprite->getAttachNode("Bip001 R Hand")->addChild(sp);
        //ParticleSystem3D* particleSystem3D = ParticleSystem3D::create("CameraTest/particle3Dtest1.particle");
        //particleSystem3D->start();
        //sprite->getAttachNode("Bip001 R Hand")->addChild(particleSystem3D);

    }
    sprite->setScale(scale);

}
void Camera3DTestDemo::onTouchesBegan(const std::vector<Touch*>& touches, cocos2d::Event  *event)
{
    for ( auto &item: touches )
    {
        auto touch = item;
        auto location = touch->getLocation();

    }
}
void Camera3DTestDemo::onTouchesMoved(const std::vector<Touch*>& touches, cocos2d::Event  *event)
{
    if(touches.size()==1)
    {
        auto touch = touches[0];
        auto location = touch->getLocation();
        Point newPos = touch->getPreviousLocation()-location;
        if(_cameraType==CameraType::FreeCamera || _cameraType==CameraType::FirstCamera)
        {
             Vec3 cameraDir;
             Vec3 cameraRightDir;
             _camera->getNodeToWorldTransform().getForwardVector(&cameraDir);
              cameraDir.normalize();
             cameraDir.y=0;
             _camera->getNodeToWorldTransform().getRightVector(&cameraRightDir);
             cameraRightDir.normalize();
             cameraRightDir.y=0;
             Vec3 cameraPos=  _camera->getPosition3D();
             cameraPos+=cameraDir*newPos.y*0.1;
             cameraPos+=cameraRightDir*newPos.x*0.1;
            _camera->setPosition3D(cameraPos);
             if(_sprite3D &&  _cameraType==CameraType::FirstCamera)
            {
                _sprite3D->setPosition3D(Vec3(_camera->getPositionX(),0,_camera->getPositionZ()));
                _targetPos=_sprite3D->getPosition3D();
            }
        }
    }
}
void Camera3DTestDemo::move3D(float elapsedTime)
{
    if(_sprite3D)
    {
        Vec3 curPos=  _sprite3D->getPosition3D();
        Vec3 newFaceDir = _targetPos - curPos;
        newFaceDir.y = 0.0f;
        newFaceDir.normalize();
        Vec3 offset = newFaceDir * 25.0f * elapsedTime;
        curPos+=offset;
        _sprite3D->setPosition3D(curPos);
        offset.x=offset.x;
        offset.z=offset.z;
        if(_cameraType==CameraType::ThirdCamera)
        {
            Vec3 cameraPos= _camera->getPosition3D();
            cameraPos.x+=offset.x;
            cameraPos.z+=offset.z;
            _camera->setPosition3D(cameraPos);
        }
    }
}
void Camera3DTestDemo::updateState(float elapsedTime)
{
    if(_sprite3D)
    {
        Vec3 curPos=  _sprite3D->getPosition3D();
        Vec3 curFaceDir;
        _sprite3D->getNodeToWorldTransform().getForwardVector(&curFaceDir);
        curFaceDir=-curFaceDir;
        curFaceDir.normalize();
        Vec3 newFaceDir = _targetPos - curPos;
        newFaceDir.y = 0.0f;
        newFaceDir.normalize();
        float cosAngle = std::fabs(Vec3::dot(curFaceDir,newFaceDir) - 1.0f);
        float dist = curPos.distanceSquared(_targetPos);
        if(dist<=4.0f)
        {
            if(cosAngle<=0.01f)
                _curState = State_Idle;
            else
                _curState = State_Rotate;
        }
        else
        {
            if(cosAngle>0.01f)
                _curState = State_Rotate | State_Move;
            else
                _curState = State_Move;
        }
    }
}
void Camera3DTestDemo::onTouchesEnded(const std::vector<Touch*>& touches, cocos2d::Event  *event)
{
    for ( auto &item: touches )
    {
        auto touch = item;
        auto location = touch->getLocationInView();
        if(_camera)
        {
            if(_sprite3D && _cameraType==CameraType::ThirdCamera)
            {
                Vec3 nearP(location.x, location.y, -1.0f), farP(location.x, location.y, 1.0f);
                
                auto size = Director::getInstance()->getWinSize();
                _camera->unproject(size, &nearP, &nearP);
                _camera->unproject(size, &farP, &farP);
                Vec3 dir(farP - nearP);
                float dist=0.0f;
                float ndd = Vec3::dot(Vec3(0,1,0),dir);
                if(ndd == 0)
                    dist=0.0f;
                float ndo = Vec3::dot(Vec3(0,1,0),nearP);
                dist= (0 - ndo) / ndd;
                Vec3 p =   nearP + dist *  dir;
                _targetPos=p;
            }
        }
    }
}
void onTouchesCancelled(const std::vector<Touch*>& touches, cocos2d::Event  *event)
{
}
void Camera3DTestDemo::updateCamera(float fDelta)
{
    if(_sprite3D)
    {
        if( _cameraType==CameraType::ThirdCamera)
        {
            updateState(fDelta);
            if(isState(_curState,State_Move))
            {
                move3D(fDelta);
                if(isState(_curState,State_Rotate))
                {
                    Vec3 curPos = _sprite3D->getPosition3D();

                    Vec3 newFaceDir = _targetPos - curPos;
                    newFaceDir.y = 0;
                    newFaceDir.normalize();
                    Vec3 up;
                    _sprite3D->getNodeToWorldTransform().getUpVector(&up);
                    up.normalize();
                    Vec3 right;
                    Vec3::cross(-newFaceDir,up,&right);
                    right.normalize();
                    Vec3 pos = Vec3(0,0,0);
                    Mat4 mat;
                    mat.m[0] = right.x;
                    mat.m[1] = right.y;
                    mat.m[2] = right.z;
                    mat.m[3] = 0.0f;

                    mat.m[4] = up.x;
                    mat.m[5] = up.y;
                    mat.m[6] = up.z;
                    mat.m[7] = 0.0f;

                    mat.m[8]  = newFaceDir.x;
                    mat.m[9]  = newFaceDir.y;
                    mat.m[10] = newFaceDir.z;
                    mat.m[11] = 0.0f;

                    mat.m[12] = pos.x;
                    mat.m[13] = pos.y;
                    mat.m[14] = pos.z;
                    mat.m[15] = 1.0f;
                    _sprite3D->setAdditionalTransform(&mat);
                }
            }
        }
    }
}
bool Camera3DTestDemo::isState(unsigned int state,unsigned int bit) const
{
    return (state & bit) == bit;
}
void Camera3DTestScene::runThisTest()
{
    auto layer = nextSpriteTestAction();
    addChild(layer);
    Director::getInstance()->replaceScene(this);
}