#include "GameScene.h"
#include "PauseScene.h"
#include "GameOverScene.h"
#include "SimpleAudioEngine.h"


USING_NS_CC;

Scene* GameScreen::createScene()
{
	auto scene = GameScreen::createWithPhysics();
	scene->getPhysicsWorld()->setGravity(Vec2(0, 0));
	auto layer = GameScreen::create();
	scene->addChild(layer);
	return scene;
}

 bool GameScreen::init()
{
    if ( !Scene::init() )
    {
        return false;
    }

	 auto backgroundSprite = Sprite::create("background.png");
	 backgroundSprite->setPosition(Point(visibleSize.width / 2 + origin.x, visibleSize.height / 2 + origin.y));
	 addChild(backgroundSprite, -1);

	 player = std::make_unique<TestPlayer>(visibleSize, origin);
	 addChild(player->getSprite(),-1);

	 spawnNewApple(true); 

	 auto menuPause = MenuItemImage::create("pause.png", "pause.png", CC_CALLBACK_1(GameScreen::GoToPauseScene, this));
	 menuPause->setPosition(Point(menuPause->getContentSize().width - (menuPause->getContentSize().width / 4) + origin.x, visibleSize.height - menuPause->getContentSize().height + (menuPause->getContentSize().width / 4) + origin.y));
	 auto hpLabel = Label::createWithSystemFont("HP: " + std::to_string(player->get_hp()), "Arial", 20);
	 hpLabel->setName("hpLabel");
	 addChild(hpLabel);
	 hpLabel->setPosition(menuPause->getPosition().x, menuPause->getPosition().y / 2);
	 auto menu = Menu::create(menuPause, NULL);
	 menu->setPosition(Point::ZERO);
	 addChild(menu);

//	 this->schedule(schedule_selector(GameScreen::spawnNumber), 1.0);
	 auto listener = EventListenerTouchOneByOne::create();
	 listener->setSwallowTouches(true);
	 listener->onTouchBegan = CC_CALLBACK_2 (GameScreen::onTouchBegan, this);
	 getEventDispatcher()->addEventListenerWithSceneGraphPriority(listener, this);
	 auto contactListener = EventListenerPhysicsContact::create();
	 contactListener->onContactBegin = CC_CALLBACK_1(GameScreen::onContactBegin, this);
	 getEventDispatcher()->addEventListenerWithSceneGraphPriority(contactListener, this);
	 return true;
}

void GameScreen::GoToGameOverScene(Ref* pSender)
{
	auto scene = GameOver::createScene();
	Director::getInstance()->replaceScene(scene);
}

void GameScreen::GoToPauseScene(Ref* pSender)
{
	auto scene = PauseMenu::createScene();
	Director::getInstance()->pushScene(scene);
}

bool GameScreen::onTouchBegan(Touch* touch,Event* event)
{
	auto action = MoveTo::create(2.0, Point(touch->getLocation().x, touch->getLocation().y));
	player->getSprite()->runAction(action);
	return true;
}

bool GameScreen::onContactBegin(PhysicsContact& contact)
{

	if (!apple->getIsGood())
	{	
		player->decrease_hp();
		if (player->get_hp() <= 0)
			GoToGameOverScene(this);
		else
			dynamic_cast<Label*>(getChildByName("hpLabel"))->setString("HP: " + std::to_string(player->get_hp()));
	}

	spawnNewApple(false);
	return true;
}

void GameScreen::spawnNewApple(bool firstapple)
{
	srand(unsigned(time(NULL)));	
	auto randx = rand() % (int)visibleSize.width;
	auto randy = rand() % (int)visibleSize.height;

	cocos2d::Vec2 spawnPosition(randx, randy);

	if (firstapple)
	{
		apple = std::make_unique<Apple>(spawnPosition, true);
		addChild(apple->getSprite(), -1);
	}
	else
		apple->getSprite()->setPosition(spawnPosition);

	apple->setIsGood(randx % 2 == 0);

}