oxygine-framework/examples/Demo/src/TestDrag.h

#pragma once
#include "test.h"
#include "Draggable.h"
#include "TweenOutline.h"
class DraggableSprite: public Sprite
{
public:
    DraggableSprite()
    {
        //drag.init(this);
    }

    //Draggable drag;
    void onEvent(Event* ev)
    {
        TouchEvent* te = safeCast<TouchEvent*>(ev);
        if (te->type == TouchEvent::TOUCH_DOWN)
        {
            local = te->localPosition;
            _stage->addEventListener(TouchEvent::MOVE, CLOSURE(this, &DraggableSprite::onEvent));
            _stage->addEventListener(TouchEvent::TOUCH_UP, CLOSURE(this, &DraggableSprite::onEvent));
        }

        if (te->type == TouchEvent::MOVE)
        {
            move(te->localPosition);
        }

        if (te->type == TouchEvent::TOUCH_UP)
        {
            _stage->removeEventListeners(this);
        }
    }

    void move(const Vector2& pos)
    {
        Vector2 localPos = stage2local(pos);
        Vector2 offset = localPos - local;

        Transform tr = getTransform();
        tr.x = 0;
        tr.y = 0;
        Vector2 p = tr.transform(offset);
        setPosition(getPosition() + p);
    }

    void doUpdate(const UpdateState& us)
    {
        pointer_index ind = getPressed();
        if (!ind)
            return;
        PointerState* st = Input::instance.getTouchByIndex(ind);
        move(_stage->parent2local(st->getPosition()));
    }





    void onAdded2Stage()
    {
        addEventListener(TouchEvent::TOUCH_DOWN, CLOSURE(this, &DraggableSprite::onEvent));
    }

    void onRemovedFromStage()
    {
        _stage->removeEventListeners(this);
    }


    Vector2 local;
};

class DragTest: public Test
{
public:

    spSprite sprites[3];
    spActor contacts;
    int priority;

    DragTest()
    {
        priority = 0;

        Vector2 pos[3];
        pos[0] = Vector2(425, 420);
        pos[1] = Vector2(600, 225);
        pos[2] = Vector2(305, 170);


        for (int i = 0; i < 3; ++i)
        {
            spSprite sprite = new DraggableSprite;
            sprite->setPosition(pos[i]);
            sprite->setResAnim(resources.getResAnim("batterfly"));
            sprite->attachTo(content);


            float angle = scalar::randFloat(0, (float)MATH_PI * 2);
            sprite->setRotation(angle);
            sprite->addTween(Actor::TweenRotation(MATH_PI * 2 + angle), 30000, -1);
            sprite->setScale(scalar::randFloat(0.8f, 1.2f));
            sprite->setAnchor(0.5f, 0.5f);

            sprite->addEventListener(TouchEvent::TOUCH_DOWN, CLOSURE(this, &DragTest::onMouseDown));
            sprite->addEventListener(TouchEvent::TOUCH_UP, CLOSURE(this, &DragTest::onMouseUp));

            sprites[i] = sprite;
        }

        contacts = new Actor;
        contacts->attachTo(content);
        contacts->setPriority(10000);
        contacts->setTouchChildrenEnabled(false);
        //contacts->setVisible(false);

        //content->addTween(TweenOutline(Color::GreenYellow), TweenOptions(5000).loops(-1).twoSides());
    }

    void doUpdate(const UpdateState& us)
    {
        //check intersections between sprites and visualize contact points
        for (int i = 0; i < 3; ++i)
        {
            spSprite a = sprites[i];

            for (int n = 0; n < 3; ++n)
            {
                spSprite b = sprites[n];
                if (a == b)
                    continue;

                Vector2 contact;
                if (testIntersection(a, b, 0, &contact))
                {
                    spSprite c = new Sprite;
                    c->setAnchor(0.5f, 0.5f);
                    c->setResAnim(resources.getResAnim("snow"));
                    c->addTween(Actor::TweenAlpha(0), 300)->detachWhenDone();
                    Vector2 pos = a->local2stage(contact, content);
                    c->setPosition(pos);
                    c->attachTo(contacts);
                }
            }
        }
    }

    void onMouseDown(Event* event)
    {
        spActor actor = safeSpCast<Actor>(event->currentTarget);

        //show clicked sprite on top
        actor->setPriority(priority++);

        spTween t = actor->addTween(Sprite::TweenColor(Color::Red), 300, -1, true);
        t->setName("color");
    }

    void onMouseUp(Event* event)
    {
        spSprite actor = safeSpCast<Sprite>(event->currentTarget);

        spTween t = actor->getTween("color", ep_ignore_error);
        if (t)
            actor->removeTween(t);
        actor->setColor(Color::White);
    }
};


class Drag2Test: public Test
{
public:
    spSprite basket;
    spSprite ball;
    spSprite dragging;
    spTextField txt;

    timeMS timeLeft;
    const PointerState* touchedBy;
    Draggable drag;

    Drag2Test(): touchedBy(0), timeLeft(0)
    {
        basket = new Sprite;
        basket->setName("basket");
        basket->setResAnim(resources.getResAnim("batterfly"));
        basket->attachTo(content);
        basket->setAnchor(0.5f, 0.5f);
        basket->setX(content->getWidth() * 3 / 4);
        basket->setY(content->getHeight() / 2);

        ball = new Sprite;
        ball->setName("ball");
        ball->setResAnim(resources.getResAnim("batterfly"));
        ball->attachTo(content);
        ball->setAnchor(0.5f, 0.5f);
        ball->setX(content->getWidth() * 1 / 4);
        ball->setY(content->getHeight() / 2);

        ball->addEventListener(TouchEvent::TOUCH_DOWN, CLOSURE(this,  &Drag2Test::ballTouchDown));
        ball->addEventListener(TouchEvent::TOUCH_UP, CLOSURE(this,  &Drag2Test::ballTouchUp));
        content->addEventListener(TouchEvent::TOUCH_UP, CLOSURE(this, &Drag2Test::touchUp));

        txt = new TextField;
        txt->attachTo(content);
        txt->setVAlign(TextStyle::VALIGN_MIDDLE);
        txt->setHAlign(TextStyle::HALIGN_MIDDLE);
        txt->setPosition(getSize() / 2);
    }


    void ballTouchUp(Event* event)
    {
        touchedBy = 0;
    }

    void touchUp(Event* event)
    {
        if (!dragging)
            return;
        if (event->currentTarget.get() != content)
            return;

        dragging->setColor(Color::White);
        spTween t;
        if (event->target == basket)
            t = dragging->addTween(Actor::TweenPosition(basket->getPosition() - basket->getSize() / 2), 500);
        else
            t = dragging->addTween(Actor::TweenPosition(ball->getPosition() - ball->getSize() / 2), 500);
        t->detachWhenDone();
        dragging = 0;
    }


    void ballTouchDown(Event* ev)
    {
        TouchEvent* te = safeCast<TouchEvent*>(ev);
        touchedBy = te->getPointer();
        timeLeft = 500;
    }

    void doUpdate(const UpdateState& us)
    {
        if (!touchedBy)
        {
            txt->setText("Drag left object and drop on right object");
            if (!ball->getTween("scale", ep_ignore_error))
                ball->addTween(Actor::TweenScale(1.1f), 500, -1, true)->setName("scale");
            basket->removeTweens();
            return;
        }

        if (!timeLeft)
            return;

        timeLeft -= us.dt;
        if (timeLeft <= 0)
        {
            ball->removeTweens();
            basket->addTween(Actor::TweenScale(1.1f), 500, -1, true);
            txt->setText("Now drop it on right object");

            timeLeft = 0;
            dragging = ball->clone();

            dragging->setName("dragging");
            dragging->attachTo(ball->getParent());
            dragging->setColor(Color::Red);
            dragging->setAnchor(0, 0);
            dragging->setTouchEnabled(false);
            drag.start(touchedBy, dragging.get(), dragging->getSize() / 2);
        }
    }
private:
};