ParallaxTest.cpp

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/****************************************************************************
 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
 
 http://www.cocos2d-x.org
 
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#include "ParallaxTest.h"
#include "../testResource.h"
 
USING_NS_CC;
 
enum 
{
    kTagNode,
    kTagGrossini,
};
 
ParallaxTests::ParallaxTests()
{
    ADD_TEST_CASE(Parallax1);
    ADD_TEST_CASE(Parallax2);
    ADD_TEST_CASE(Issue2572);
}
 
//------------------------------------------------------------------
//
// Parallax1
//
//------------------------------------------------------------------
 
Parallax1::Parallax1()
{
    // Top Layer, a simple image
    auto cocosImage = Sprite::create(s_Power);
    // scale the image (optional)
    cocosImage->setScale( 2.5f );
    // change the transform anchor point to 0,0 (optional)
    cocosImage->setAnchorPoint( Vec2(0,0) );
    
 
    // Middle layer: a Tile map atlas
    auto tilemap = TileMapAtlas::create(s_TilesPng, s_LevelMapTga, 16, 16);
    tilemap->releaseMap();
    
    // change the transform anchor to 0,0 (optional)
    tilemap->setAnchorPoint( Vec2(0, 0) );
 
    // Anti Aliased images
    tilemap->getTexture()->setAntiAliasTexParameters();
    
 
    // background layer: another image
    auto background = Sprite::create(s_back);
    // scale the image (optional)
    background->setScale( 1.5f );
    // change the transform anchor point (optional)
    background->setAnchorPoint( Vec2(0,0) );
 
    
    // create a void node, a parent node
    auto voidNode = ParallaxNode::create();
    
    // NOW add the 3 layers to the 'void' node
 
    // background image is moved at a ratio of 0.4x, 0.5y
    voidNode->addChild(background, -1, Vec2(0.4f,0.5f), Vec2::ZERO);
    
    // tiles are moved at a ratio of 2.2x, 1.0y
    voidNode->addChild(tilemap, 1, Vec2(2.2f,1.0f), Vec2(0,-200) );
    
    // top image is moved at a ratio of 3.0x, 2.5y
    voidNode->addChild(cocosImage, 2, Vec2(3.0f,2.5f), Vec2(200,800) );
    
    
    // now create some actions that will move the 'void' node
    // and the children of the 'void' node will move at different
    // speed, thus, simulation the 3D environment
    auto goUp = MoveBy::create(4, Vec2(0,-500) );
    auto goDown = goUp->reverse();
    auto go = MoveBy::create(8, Vec2(-1000,0) );
    auto goBack = go->reverse();
    auto seq = Sequence::create(goUp, go, goDown, goBack, nullptr);
    voidNode->runAction( (RepeatForever::create(seq) ));
    
    addChild( voidNode );
}
 
std::string Parallax1::title() const
{
    return "Parallax: parent and 3 children";
}
 
//------------------------------------------------------------------
//
// Parallax2
//
//------------------------------------------------------------------
 
Parallax2::Parallax2()
{
    auto listener = EventListenerTouchAllAtOnce::create();
    listener->onTouchesMoved = CC_CALLBACK_2(Parallax2::onTouchesMoved, this);
    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);
    
    // Top Layer, a simple image
    auto cocosImage = Sprite::create(s_Power);
    // scale the image (optional)
    cocosImage->setScale( 2.5f );
    // change the transform anchor point to 0,0 (optional)
    cocosImage->setAnchorPoint( Vec2(0,0) );
    
    
    // Middle layer: a Tile map atlas
    auto tilemap = TileMapAtlas::create(s_TilesPng, s_LevelMapTga, 16, 16);
    tilemap->releaseMap();
    
    // change the transform anchor to 0,0 (optional)
    tilemap->setAnchorPoint( Vec2(0, 0) );
    
    // Anti Aliased images
    tilemap->getTexture()->setAntiAliasTexParameters();
    
    
    // background layer: another image
    auto background = Sprite::create(s_back);
    // scale the image (optional)
    background->setScale( 1.5f );
    // change the transform anchor point (optional)
    background->setAnchorPoint( Vec2(0,0) );
    
    
    // create a void node, a parent node
    auto voidNode = ParallaxNode::create();
    
    // NOW add the 3 layers to the 'void' node
    
    // background image is moved at a ratio of 0.4x, 0.5y
    voidNode->addChild(background, -1, Vec2(0.4f,0.5f), Vec2::ZERO);
    
    // tiles are moved at a ratio of 1.0, 1.0y
    voidNode->addChild(tilemap, 1, Vec2(1.0f,1.0f), Vec2(0,-200) );
    
    // top image is moved at a ratio of 3.0x, 2.5y
    voidNode->addChild( cocosImage, 2, Vec2(3.0f,2.5f), Vec2(200,1000) );
    addChild(voidNode, 0, kTagNode);
}
 
void Parallax2::onTouchesMoved(const std::vector<Touch*>& touches, Event  *event)
{
    auto diff = touches[0]->getDelta();
    
    auto node = getChildByTag(kTagNode);
    auto currentPos = node->getPosition();
    node->setPosition(currentPos + diff);
}
 
std::string Parallax2::title() const
{
    return "Parallax: drag screen";
}
 
//------------------------------------------------------------------
//
// Issue2572
//
//------------------------------------------------------------------
Issue2572::Issue2572()
: _moveTimer(0.0f)
, _addTimer(0.0f)
, _preListSize(0)
, _printCount(0)
{
    _addChildStep = 1.0f;
    _wholeMoveTime = 3.0f;
    _wholeMoveSize = Vec2(-300, 0);
    
    // create a parallax node, a parent node
    _paraNode = ParallaxNode::create();
    addChild(_paraNode, 0, kTagNode);
 
    this->scheduleUpdate();
}
 
void Issue2572::update(float dt)
{
    _addTimer += dt;
    _moveTimer += dt;
    if (_moveTimer >= _wholeMoveTime) {
        this->unscheduleUpdate();
        return;
    }
 
    _paraNode->setPosition(_paraNode->getPosition() + _wholeMoveSize * dt / _wholeMoveTime);
    
    if (_addTimer >= _addChildStep) {
        _addTimer = 0.0f;
        
        auto child = Sprite::create("Images/Icon.png");
        Size viewSize = Director::getInstance()->getVisibleSize();
        Vec2 offset = Vec2(viewSize.width / 2, viewSize.height/2);
        _paraNode->addChild(child, 1, Vec2( 1, 0 ), offset );
        
        _childList.pushBack(child);
    }
 
    // After a child added, output the position of the children 3 times.
    // Bug : The first output is much different with the second one & the third one.
    if (_childList.size() != _preListSize) {
        switch (_printCount) {
            case 0:
            case 1:
            case 2:
                log( "--child count-- %zd", _childList.size());
                for (const auto& obj : _childList)
                {
                    Sprite* obstacle = dynamic_cast<Sprite*>( obj );
                    log("child position : (%.2f, %.2f)", obstacle->getPositionX(), obstacle->getPositionY());
                }
                log("-------------------");
                _printCount++;
                break;
            case 3:
                _preListSize = _childList.size();
                _printCount = 0;
                break;
            default:
                break;
        }
    }
}
 
std::string Issue2572::title() const
{
    return "Issue 2572";
}
 
std::string Issue2572::subtitle() const
{
    return "Look at the output in console";
}