#include "cocos2d.h"
 
// cocos2d::Componentを継承する
class PlayerInputComponent : public cocos2d::Component
{
public:
    PlayerInputComponent();
    virtual ~PlayerInputComponent();
 
    virtual bool init();
    virtual void onEnter();
    virtual void update(float delta);
 
    // touch events
    bool onTouchBegan(cocos2d::Touch* touch, cocos2d::Event* event);
    void onTouchMoved(cocos2d::Touch* touch, cocos2d::Event* event);
    void onTouchEnded(cocos2d::Touch* touch, cocos2d::Event* event);
    void onTouchCanceled(cocos2d::Touch* touch, cocos2d::Event* event);
 
    // PlayerInputComponent::create()メソードを作成してくれるマクロ
    CREATE_FUNC(PlayerInputComponent);
 
protected:
    // listener
    cocos2d::EventListenerTouchOneByOne *touch_listener_;
 
    // 移動先
    cocos2d::Vec2 move_to_;
 
    // 今の場所
    cocos2d::Vec2 cur_pos_;
 
    // スピード
    float speed_;
};

#include "PlayerInputComponent.h"
 
USING_NS_CC;
 
PlayerInputComponent::PlayerInputComponent():
touch_listener_(nullptr),
move_to_(Vec2::ZERO),
cur_pos_(Vec2::ZERO),
speed_(0)
{
 
}
 
PlayerInputComponent::~PlayerInputComponent()
{
    touch_listener_->release();
}
 
bool PlayerInputComponent::init()
{
    if (! Component::init()) return false;
 
    // コンポーネントの名前をセット
    // Owner->getComponent(<コンポーネント名>)でinstanceを取得できます
    this->setName("PlayerInput");
 
    // Listenerを作成
    touch_listener_ = EventListenerTouchOneByOne::create();
    touch_listener_->setSwallowTouches(true);
 
    // autoreleaseされないように
    touch_listener_->retain();
 
    touch_listener_->onTouchBegan = CC_CALLBACK_2(PlayerInputComponent::onTouchBegan, this);
    touch_listener_->onTouchMoved = CC_CALLBACK_2(PlayerInputComponent::onTouchMoved, this);
    touch_listener_->onTouchEnded = CC_CALLBACK_2(PlayerInputComponent::onTouchEnded, this);
    touch_listener_->onTouchCancelled = CC_CALLBACK_2(PlayerInputComponent::onTouchCanceled, this);
 
    return true;
}
 
void PlayerInputComponent::onEnter()
{
    Component::onEnter();
 
    // スピードをセット
    speed_ = 400;
 
    Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(touch_listener_, this->getOwner());
 
    // Ownerのupdateを走らせる
    this->getOwner()->scheduleUpdate();
}
 
void PlayerInputComponent::update(float delta)
{
    // 今の位置と目的地座標が違うであれば：
    if (! this->getOwner()->getPosition().equals(move_to_))
    {
        // 移動距離のx, y座標
        Vec2 v = move_to_ - cur_pos_;
 
        // 移動距離
        float d = move_to_.distance(cur_pos_);
 
        // 現在の位置
        Vec2 to = this->getOwner()->getPosition();
 
        // 移動速度
        Vec2 s = Vec2(v.x * speed_/d, v.y * speed_/d);
 
        //
        to += s * delta;
 
        // 誤差を補正
        if (v.x < 0) {
            if (to.x < move_to_.x) to.x = move_to_.x;
        } else {
            if (to.x > move_to_.x) to.x = move_to_.x;
        }
        if (v.y < 0) {
            if (to.y < move_to_.y) to.y = move_to_.y;
        } else {
            if (to.y > move_to_.y) to.y = move_to_.y;
        }
 
        // Ownerの位置更新
        this->getOwner()->setPosition(to);
    }
}
 
bool PlayerInputComponent::onTouchBegan(cocos2d::Touch* touch, cocos2d::Event *event)
{
    CCLOG("On touch began");
    return true;
}
 
void PlayerInputComponent::onTouchMoved(cocos2d::Touch* touch, cocos2d::Event *event)
{
    CCLOG("On touch moved");
}
 
void PlayerInputComponent::onTouchEnded(cocos2d::Touch* touch, cocos2d::Event *event)
{
    // 今の位置と目的をアサインする
    cur_pos_ = this->getOwner()->getPosition();
    move_to_ = touch->getLocation();
 
 
    CCLOG("On touch ended");
}
 
void PlayerInputComponent::onTouchCanceled(cocos2d::Touch* touch, cocos2d::Event *event)
{
    CCLOG("On touch canceled");
}

auto sprite = Sprite::create("HelloWorld.png");
sprite->addComponent(PlayerInputComponent::create());
 
this->addChild(sprite, 0);