/*
 *   ORXONOX - the hottest 3D action shooter ever to exist
 *                    > www.orxonox.net <
 *
 *
 *   License notice:
 *
 *   This program is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU General Public License
 *   as published by the Free Software Foundation; either version 2
 *   of the License, or (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 *   Author:
 *      Viviane Yang
 *   Co-authors:
 *      ...
 *
 */



/**
    @file Asteroids2D.cc
    @brief Implementation of the Asteroids2D class.

    TODO: 
        - Implement a counting system for the score
        - HUD can be improved (display health, points, level etc.
        - Problem: The asteroids spawn randomly on the playing field.
            During spawn or level up, there is the possibility that they pawn at the position of the ship.
            ->spawn somewhere with a safty distance/radius
        - look over collisionshapes of the stones ->  sometimes collison with stone is not triggered for bigger stones 
        - modify parameters in data/levels/templates/spaceshipAsteroids2D.oxt for a better playing experience -> mass, damping, rotation etc.

    IDEAS:
        - make Asteroids more beautiful! (setting, ship, explosion particles, stones)
        - particle effect after you got hit -> during bImmune is true
        - implement shield -> object that can be triggered
        - Projectiles should also move over the boarders and appear on the other side
            -> they can also hurt the player

*/

#include "Asteroids2D.h"
#include "Asteroids2DShip.h" // Necessary for getPlayer function. Do NOT include this in Header!
#include "Asteroids2DStone.h"
#include "Asteroids2DCenterPoint.h"
#include "Asteroids2DHUDinfo.h"
#include "core/CoreIncludes.h"
#include "Highscore.h"
#include "gamestates/GSLevel.h"
#include "infos/PlayerInfo.h"

namespace orxonox
{
    RegisterUnloadableClass(Asteroids2D);

    Asteroids2D::Asteroids2D(Context* context) : Deathmatch(context)
    {
        RegisterObject(Asteroids2D);

        bEndGame = false;
        lives = 3; 
        level = 1;
        point = 0;
        bShowLevel = false;
        multiplier = 1;
        b_combo = false;
        firstTick_ = true;
        this->numberOfBots_ = 0; //sets number of default bots temporarly to 0
        this->center_ = nullptr;
        this->setHUDTemplate("Asteroids2DHUD");
        levelupTimer.setTimer(30.0f, true, createExecutor(createFunctor(&Asteroids2D::levelUp, this))); //level up every 30s
    }

    void Asteroids2D::setCenterpoint(Asteroids2DCenterPoint* center)
    {
        this->center_ = center;
    }

    void Asteroids2D::levelUp()
    {
        level++;
        if (getPlayer() != nullptr)
        {

            //Do something that indicates a level up
            for (int i = 0; i < 7; i++)
            {
                WeakPtr<ExplosionPart> chunk5 = new ExplosionPart(this->center_->getContext());
                chunk5->setPosition(Vector3(600, 0, 100.f * i - 300));
                chunk5->setVelocity(Vector3(1000, 0, 0));  //player->getVelocity()
                chunk5->setScale(10);
                chunk5->setEffect1("Orxonox/explosion2b");
                chunk5->setEffect2("Orxonox/smoke6");
                chunk5->Explode();

            }
        }
        addPoints(multiplier * 20);
        multiplier *= 2;
        toggleShowLevel();
        showLevelTimer.setTimer(1.0f, false, createExecutor(createFunctor(&Asteroids2D::toggleShowLevel, this)));


        //After level up -> spawn stones. Modify for different difficulty level
        for(int i = 0; i < level*2; i++){
            spawnStone();
        }

    }

    void Asteroids2D::tick(float dt)
    {
        //Do this only for the first tick, generate 5 stones in the beginning
        if(this->firstTick_)
        {
            for(int i = 0; i < 5; ++i)
            {
                spawnStone();
            }
            //after first tick, firstTick_ will remain false
            this->firstTick_ = false;
        }
        
        SUPER(Asteroids2D, tick, dt);
    }

    void Asteroids2D::spawnStone()
    {

        //stones are created with a size -> second constructor in Asteroids2DStone class
        Asteroids2DStone* newStone = new Asteroids2DStone(this->center_->getContext());

        //look at templates in data/levels/templates/asteroidsAsteroids2D.oxt
        switch(newStone->getSize()){
            case 1:
                newStone->addTemplate("stone1");
                break;
            case 2: 
                newStone->addTemplate("stone2");
                break;
            case 3:
                newStone->addTemplate("stone3");
                break;
            default:
                orxout(internal_error) << "Asteroids2DStone has invalid size and cannot be created" << endl;
                break;

        }
    }

    Asteroids2DShip* Asteroids2D::getPlayer()
    {
        for (Asteroids2DShip* ship : ObjectList<Asteroids2DShip>())
        {
            return ship;
        }
        return nullptr;
    }

    void Asteroids2D::costLife()
    {
        --lives;
        if(lives <= 0){
            endGameTimer.setTimer(8.0f, false, createExecutor(createFunctor(&Asteroids2D::end, this)));            
        }
    };
    
    //The first function that will be called
    void Asteroids2D::start()
    {
        //orxout() << "start" << endl;

        // Set variable to temporarily force the player to spawn.
        this->bForceSpawn_ = false;

        if (this->center_ == nullptr)  // abandon mission!
        {
            orxout(internal_error) << "Asteroids2D: No Centerpoint specified." << endl;
            GSLevel::startMainMenu();
            return;
        }
        // Call start for the parent class.
        Deathmatch::start();
    }

    void Asteroids2D::playerPreSpawn(PlayerInfo* player)
    {
        this->playerInfo_ = player;
        if(lives <= 0)
        {
            this->end();
        }
    }

    //This function will be called from the ship or the stone class (if the stone was hit)
    void Asteroids2D::addPoints(int numPoints)
    {
        if (!bEndGame)
        {
            point += numPoints * multiplier;
            b_combo = true;
        }
    }

    void Asteroids2D::end()
    {
        // DON'T CALL THIS!
        //      Deathmatch::end();
        // It will misteriously crash the game!
        // Instead startMainMenu, this won't crash.
        if (Highscore::exists())
        {
            int score = this->getPoints();
            Highscore::getInstance().storeScore("Asteroids2D", score, this->playerInfo_);
        }
        GSLevel::startMainMenu();
    }
}