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//Own

#include "bomb.h"

#include "submarine.h"

#include "pixmapitem.h"

#include "animationmanager.h"

#include "qanimationstate.h"

//Qt

#include <QtCore/QSequentialAnimationGroup>

#include <QtCore/QPropertyAnimation>

#include <QtCore/QStateMachine>

#include <QtCore/QFinalState>

Bomb::Bomb() : PixmapItem(QString("bomb"), GraphicsScene::Big)

{

    setZValue(2);

}

void Bomb::launch(Bomb::Direction direction)

{

    QSequentialAnimationGroup *launchAnimation = new QSequentialAnimationGroup;

    AnimationManager::self()->registerAnimation(launchAnimation);

    qreal delta = direction == Right ? 20 : - 20;

    QPropertyAnimation *anim = new QPropertyAnimation(this, "pos");

    anim->setEndValue(QPointF(x() + delta,y() - 20));

    anim->setDuration(150);

    launchAnimation->addAnimation(anim);

    anim = new QPropertyAnimation(this, "pos");

    anim->setEndValue(QPointF(x() + delta*2, y() ));

    anim->setDuration(150);

    launchAnimation->addAnimation(anim);

    anim = new QPropertyAnimation(this, "pos");

    anim->setEndValue(QPointF(x() + delta*2,scene()->height()));

    anim->setDuration(y()/2*60);

    launchAnimation->addAnimation(anim);

    connect(anim,SIGNAL(valueChanged(QVariant)),this,SLOT(onAnimationLaunchValueChanged(QVariant)));

    connect(this, SIGNAL(bombExploded()), launchAnimation, SLOT(stop()));

    //We setup the state machine of the bomb

    QStateMachine *machine = new QStateMachine(this);

    //This state is when the launch animation is playing

    QAnimationState *launched = new QAnimationState(machine);

    launched->setAnimation(launchAnimation);

    //End

    QFinalState *final = new QFinalState(machine);

    machine->setInitialState(launched);

    //### Add a nice animation when the bomb is destroyed

    launched->addTransition(this, SIGNAL(bombExploded()),final);

    //If the animation is finished, then we move to the final state

    launched->addTransition(launched, SIGNAL(animationFinished()), final);

    //The machine has finished to be executed, then the boat is dead

    connect(machine,SIGNAL(finished()),this, SIGNAL(bombExecutionFinished()));

    machine->start();

}

void Bomb::onAnimationLaunchValueChanged(const QVariant &)

{

    foreach (QGraphicsItem * item , collidingItems(Qt::IntersectsItemBoundingRect)) {

        if (item->type() == SubMarine::Type) {

            SubMarine *s = static_cast<SubMarine *>(item);

            destroy();

            s->destroy();

        }

    }

}

void Bomb::destroy()

{

    emit bombExploded();

}