/*
 *   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:
 *      Leo Merholz
 *      Pascal Schärli
 *   Co-authors:
 *      ...
 *
 */

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

#include "FlappyOrx.h"
#include "Highscore.h"
#include "core/CoreIncludes.h"


#include "core/EventIncludes.h"
#include "core/command/Executor.h"
#include "core/config/ConfigValueIncludes.h"
#include "core/XMLPort.h"
#include "gamestates/GSLevel.h"
#include "chat/ChatManager.h"

// ! HACK
#include "infos/PlayerInfo.h"

#include "FlappyOrxShip.h"

#include "core/command/ConsoleCommand.h"
#include "worldentities/ExplosionPart.h"
#include <vector>

namespace orxonox
{
    RegisterUnloadableClass(FlappyOrx);

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

        point = 0;                          //number of cleared tubes
        bIsDead = true;
        firstGame = true;                   //needed for the HUD

        speedBase = 0;
        speedIncrease = 0;
        tubeDistanceBase = 0;
        tubeDistanceIncrease = 0;
        tubeDistance = 200.0f;                  //distance between tubes
        tubeOffsetX = 500.0f;                    //tube offset (so that we can't see them spawn)

        circlesUsed=0;
        setHUDTemplate("FlappyOrxHUD");
        scoreboardTemplate_ = "";
    }
    
    void FlappyOrx::updatePlayerPos(float x){

        //Spawn a new Tube when the spawn distance is reached
        if(this->tubes.size()==0||x-tubes.back()+tubeOffsetX>tubeDistance){
            spawnTube();
            this->tubes.push(x+tubeOffsetX);
        }
        //Delete Tubes when we pass through them
        if(this->tubes.size()!=0&&x>this->tubes.front()){
            this->tubes.pop();
            levelUp();
        }
        //Delete Asteroids which are not visible anymore
        while(this->asteroids.size()!=0&&(this->asteroids.front())->getPosition().x<x-tubeOffsetX){
            MovableEntity* deleteMe = asteroids.front();
            asteroids.pop();
            deleteMe->destroy();
        }
    }

    //Gets called when we pass through a Tube
    void FlappyOrx::levelUp(){
        point++;
        tubeDistance = tubeDistanceBase-tubeDistanceIncrease*point;            //smaller spawn Distance
        getPlayer()->setSpeed(speedBase+speedIncrease*point);    //increase speed
    }

    //Returns our Ship
    FlappyOrxShip* FlappyOrx::getPlayer(){
        if (player == nullptr){
            for (FlappyOrxShip* ship : ObjectList<FlappyOrxShip>()) {
                player = ship;
            }
        }
        return player;
    }

    //Spawn new Tube
    void FlappyOrx::spawnTube(){
        if (getPlayer() == nullptr)
            return;

        float space = 130.0f;    //vertical space between top and bottom tube
        float height = (rnd()-0.5f)*(280.0f-space);  //Randomize height
           
        Vector3 pos = player->getPosition();

        //create the two Asteroid fields (Tubes)
        asteroidField(pos.x+tubeOffsetX,height-space/2,0.8f);  //bottom
        asteroidField(pos.x+tubeOffsetX,height+space/2,-0.8f); //top
    }

    //Creates a new asteroid Field
    void FlappyOrx::asteroidField(float x, float y, float slope){
        float r = 20.0f;     //Radius of added Asteroids
        int noadd = 0;  //how many times we failed to add a new asteroid

        clearCircles();   //Delete Circles (we use circles to make sure we don't spawn two asteroids on top of eachother)
        Circle newAsteroid = Circle();
        newAsteroid.x=x;
        newAsteroid.y=y;
        newAsteroid.r=r;
        addIfPossible(newAsteroid); //Add Asteroid at peak

        //Fill up triangle with asteroids
        while(noadd<5&&circlesUsed<NUM_CIRCLES){
            if(slope>0)
                newAsteroid.y=rnd(150+y)-150;   //create asteroid on bottom
            else
                newAsteroid.y=rnd(150-y)+y;     //create asteroid on top
            
            newAsteroid.x=x+(rnd()-0.5f)*(y-newAsteroid.y)/slope;
            newAsteroid.r=r;
           
            int i = addIfPossible(newAsteroid); //Add Asteroid if it doesn't collide
            if(i==0)
                noadd++;
            else if(i==2)
                noadd=5;
        }
    }

    //Create a new Asteroid
    void FlappyOrx::createAsteroid(Circle &c){
        MovableEntity* newAsteroid = new MovableEntity(player->getContext());

        //Add Model fitting the Size of the Asteroid
        if(c.r<=5)
            newAsteroid->addTemplate(Asteroid5[rand()%NUM_ASTEROIDS]);
        else if(c.r<=10)
            newAsteroid->addTemplate(Asteroid10[rand()%NUM_ASTEROIDS]);
        else if(c.r<=15)
            newAsteroid->addTemplate(Asteroid15[rand()%NUM_ASTEROIDS]);
        else
            newAsteroid->addTemplate(Asteroid20[rand()%NUM_ASTEROIDS]);
        
        //Set position
        newAsteroid->setPosition(Vector3(c.x, 0, c.y));

        //Randomize orientation
        newAsteroid->setOrientation(Vector3::UNIT_Z, Degree(rnd(360)));
        newAsteroid->setOrientation(Vector3::UNIT_Y, Degree(rnd(360)));

        //add to Queue (so that we can delete it again)
        asteroids.push(newAsteroid);
    }

    //Deletes Asteroids array which stores all the circles used to make sure no asteroids collide when spawning
    void FlappyOrx::clearCircles(){
        circlesUsed=0;
        for(int i = 0; i<NUM_CIRCLES; i++){
            circles[i].r=0;
        }
    }

    //checks if two circles collide
    bool FlappyOrx::circleCollision(Circle &c1, Circle &c2){
        if(c1.r<=0 || c2.r<=0)
            return false;
        float x = c1.x - c2.x;
        float y = c1.y - c2.y;
        float r = c1.r + c2.r;

        return x*x+y*y<r*r*1.5;
    }

    //Adds a circle if its not colliding
    int FlappyOrx::addIfPossible(Circle c){
        int i;
        for(i=0; i<NUM_CIRCLES && this->circles[i].r!=0 && c.r>0;i++){
            while(circleCollision(c,this->circles[i])){
                c.r-=5; //when it collides, try to make it smaller
            }
        }
        if(c.r<=0){
            return 0;
        }
        circlesUsed++;
        this->circles[i].x=c.x;
        this->circles[i].y=c.y;
        this->circles[i].r=c.r;
        createAsteroid(c);
        return 1;
    }

    bool FlappyOrx::isDead(){
        return bIsDead;
    }

    void FlappyOrx::setDead(bool value){
        bIsDead = value;
        if(not value){
            point = -1;
            levelUp();
        }
    }

    void FlappyOrx::start()
    {
        // Set variable to temporarily force the player to spawn.
        this->bForceSpawn_ = true;

        // Call start for the parent class.
        Deathmatch::start();
    }

    //RIP
    void FlappyOrx::death(){
        bIsDead = true;
        firstGame = false;
        
        //Set randomized deathmessages
        if(point<7)         sDeathMessage = DeathMessage7[rand()%(DeathMessage7.size())];
        else if(point<20)   sDeathMessage = DeathMessage20[rand()%(DeathMessage20.size())];
        else if(point<30)   sDeathMessage = DeathMessage30[rand()%(DeathMessage30.size())];
        else                sDeathMessage = DeathMessageover30[rand()%(DeathMessageover30.size())];
        
        //Update Highscore
        if (Highscore::exists())
        {
            int score = this->getPoints();
            Highscore::getInstance().storeScore("Flappy Orx", score, this->getPlayer()->getPlayer());
        }

        //Delete all Tubes and asteroids
        while (!tubes.empty()){
            tubes.pop();
        }
        while (!asteroids.empty()){
            MovableEntity* deleteMe = asteroids.front();
            asteroids.pop();
            deleteMe->destroy();
        }
    }

    void FlappyOrx::end()
    {
        GSLevel::startMainMenu();
    }
}