source: code/branches/OrxoBlox_FS19/src/modules/OrxoBlox/OrxoBloxBall.cc

#include "OrxoBloxBall.h"
#include "OrxoBloxStones.h"
#include "OrxoBlox.h"
#include <bullet/BulletCollision/NarrowPhaseCollision/btManifoldPoint.h>

#include "core/CoreIncludes.h"
#include "core/GameMode.h"

#include "gametypes/Gametype.h"


#include "sound/WorldSound.h"
#include "core/XMLPort.h"
#include "core/input/InputManager.h"


namespace orxonox
{
    RegisterClass(OrxoBloxBall);

    const float OrxoBloxBall::MAX_REL_Z_VELOCITY = 1.5;

    /**
    @brief
        Constructor. Registers and initializes the object.
    */
    OrxoBloxBall::OrxoBloxBall(Context* context)
        : Pawn(context)
    {
        RegisterObject(OrxoBloxBall);

        this->speed_ = 0;
        this->accelerationFactor_ = 1.0f;
        
        this->relMercyOffset_ = 0.05f;
        this->orxoblox_ = this->getOrxoBlox();
        this->radius_ = 3;

        this->registerVariables();

        //initialize sound
        if (GameMode::isMaster())
             {
                 this->defScoreSound_ = new WorldSound(this->getContext());
                 this->defScoreSound_->setVolume(1.0f);
                 
                 this->defBoundarySound_ = new WorldSound(this->getContext());
                 this->defBoundarySound_->setVolume(0.5f);
             }
             else
             {
                 this->defScoreSound_ = nullptr;
                 
                 this->defBoundarySound_ = nullptr;
             }
    }

    /**
    @brief
        Destructor.
    */
    OrxoBloxBall::~OrxoBloxBall()
    {
        
    }

    //xml port for loading sounds
    void OrxoBloxBall::XMLPort(Element& xmlelement, XMLPort::Mode mode)
    {
        SUPER(OrxoBloxBall, XMLPort, xmlelement, mode);
        XMLPortParam(OrxoBloxBall, "defScoreSound",  setDefScoreSound,  getDefScoreSound,  xmlelement, mode);
        
        XMLPortParam(OrxoBloxBall, "defBoundarySound",  setDefBoundarySound,  getDefBoundarySound,  xmlelement, mode);
    }

    /**
    @brief
        Register variables to synchronize over the network.
    */
    void OrxoBloxBall::registerVariables()
    {
        registerVariable( this->fieldWidth_ );
        registerVariable( this->fieldHeight_ );
        
        registerVariable( this->speed_ );
        registerVariable( this->relMercyOffset_ );
    }

    /**
    @brief
        Is called every tick.
        Handles the movement of the ball and its interaction with the boundaries and bats.
    @param dt
        The time since the last tick.
    */
    void OrxoBloxBall::tick(float dt)
    {   
        
        SUPER(OrxoBloxBall, tick, dt);

        // Get the current position, velocity and acceleration of the ball.
        Vector3 position = this->getPosition();
        Vector3 velocity = this->getVelocity();
        Vector3 acceleration = this->getAcceleration();

        // If the ball has gone over the top or bottom boundary of the playing field (i.e. the ball has hit the top or bottom delimiters).
        if (position.z > this->fieldHeight_ / 2 || position.z - radius_ < -this->fieldHeight_ / 2)
        {
            defBoundarySound_->play(); //play boundary sound
            // Its velocity in z-direction is inverted (i.e. it bounces off).
            velocity.z = -velocity.z;
            // And its position is set as to not overstep the boundary it has just crossed. Remember z axis is reverted!!!
            if (position.z > this->fieldHeight_ / 2){
                // Set the ball to be exactly at the boundary.
                position.z = this-> fieldHeight_ / 2 - radius_;
                
                orxoblox_->LevelUp();
                orxoblox_->LevelUp();
                //orxout() << "LevelUp 2 finished, trying to call end() function";
                //this->end();



                //this->setSpeed(0); // doesn't work here, why??;
                //Stopping ball
                orxout() << "Ball stopped" << endl;
                velocity.x = 0;
                velocity.y = 0;
                velocity.z = 0; 

                //ChatManager::message("Waiting for your input");
                //Input new speed here:
                //ChatManager::message("Setting new speed");
                
                //%%%%%%%%%%%%
                //MAUSPOSITION
                //%%%%%%%%%%%%
                //Reads current mouse position
                //TODO: read Mouse position on click!
                //int mousex = InputManager::getInstance().getMousePosition().first;
                //int mousey = InputManager::getInstance().getMousePosition().second;
                //ChatManager::message("Read mouse position");
                //orxout() << "Mouseposition" << endl;
                //orxout() << mousex << endl;
                //ChatManager::message(mousex);
                //ChatManager::message("mousey");
                //ChatManager::message(mousey);
                //Set new speed here!!
                velocity.x = rnd(-100,100);
                velocity.z = rnd(-50,-100);
                

            }
            if (position.z - radius_ < -this->fieldHeight_ / 2){
                position.z = -this->fieldHeight_ / 2 + radius_;
                
            }

            this->fireEvent();
        }
        
        //Ball hits the right or left wall and should bounce back.
        // If the ball has crossed the left or right boundary of the playing field.
        if (position.x + radius_ > this->fieldWidth_ / 2 || position.x - radius_ < -this->fieldWidth_ / 2)
        {
            //Ball hits the right Wall
            if (position.x + radius_ > this->fieldWidth_ / 2)
                {
                    // Set the ball to be exactly at the boundary.
                    position.x = this->fieldWidth_ / 2 - radius_;
                    // Invert its velocity in x-direction (i.e. it bounces off).
                    velocity.x = -velocity.x;
                    this->fireEvent();
                    }

            //Ball hits the left wall
            else if (position.x - radius_ < -this->fieldWidth_ / 2)
                {
                        // Set the ball to be exactly at the boundary.
                        position.x = -this->fieldWidth_ / 2 + radius_;
                        // Invert its velocity in x-direction (i.e. it bounces off).
                        velocity.x = -velocity.x;
                        this->fireEvent();
                    }
        }

        // Set the position, velocity and acceleration of the ball, if they have changed.
        if (acceleration != this->getAcceleration())
            this->setAcceleration(acceleration);
        if (velocity != this->getVelocity())
            this->setVelocity(velocity);
        if (position != this->getPosition())
            this->setPosition(position);
        //this->Collides((this->orxoblox_->CheckForCollision(this)));

 
    }

    /**
    @brief
        Set the speed of the ball (in x-direction).
    @param speed
        The speed to be set.
    */
    void OrxoBloxBall::setSpeed(float speed)
    {   

        if (speed != this->speed_) // If the speed changes
        {
            this->speed_ = speed;
            // Set the speed in the direction of the balls current velocity.
            Vector3 velocity = this->getVelocity();
            if (velocity.x != 0)
                velocity.x = speed;
                //velocity.x = sgn(velocity.x) * speed;
            else // If the balls current velocity is zero, the speed is set in a random direction.
                velocity.x = speed * sgn(rnd(-1,1));
            //velocity.y = this->speed_;
            velocity.z = speed;

            this->setVelocity(velocity);
        }
    }


    void OrxoBloxBall::setDefScoreSound(const std::string &OrxoBloxSound)
    {
        if( defScoreSound_ )
            defScoreSound_->setSource(OrxoBloxSound);
        else
            assert(0); // This should never happen, because soundpointer is only available on master
    }

    const std::string& OrxoBloxBall::getDefScoreSound()
    {
        if( defScoreSound_ )
            return defScoreSound_->getSource();
        else
            assert(0);
        return BLANKSTRING;
    }

    
    
    void OrxoBloxBall::setDefBoundarySound(const std::string &OrxoBloxSound)
    {
        if( defBoundarySound_ )
            defBoundarySound_->setSource(OrxoBloxSound);
        else
            assert(0); // This should never happen, because soundpointer is only available on master
    }

    const std::string& OrxoBloxBall::getDefBoundarySound()
    {
        if( defBoundarySound_ )
            return defBoundarySound_->getSource();
        else
            assert(0);
        return BLANKSTRING;
    }


    void OrxoBloxBall::Bounce(WorldEntity* Stone) {

        Vector3 velocity = this->getVelocity();
        Vector3 positionStone = Stone->getPosition();
        Vector3 myPosition = this->getPosition();
        //orxout() << "About to Bounce >D" << endl;
        
            int distance_X = myPosition.x - positionStone.x;
            int distance_Z = myPosition.z - positionStone.z;

            if (distance_X < 0)
                distance_X = -distance_X;
    

            if (distance_Z < 0)
                distance_Z = -distance_Z;

            //orxout() << distance_X << endl;
            //orxout() << distance_Z << endl;

            if (distance_X < distance_Z) {
                velocity.z = -velocity.z;
                //orxout() << "z" << endl;  
            }
            else if (distance_Z < distance_X) {
                velocity.x = -velocity.x;
                //orxout() << "x" << endl;       
            }
            else {
                velocity.x = -velocity.x;
                velocity.z = -velocity.z;
                //orxout() << "both" << endl;
            }                                  

            this->setVelocity(velocity);
            this->setPosition(myPosition);
    }


    void OrxoBloxBall::Collides(OrxoBloxStones* Stone)
    {

        if(Stone == nullptr)
            return;

        orxout() << "About to Bounce >D" << endl;
        Bounce(Stone);
        //if(otherObject->getHealth() <= 0) {
        //Stone->destroy();

        //}
        //otherObject->reduceHealth();
    }

    bool OrxoBloxBall::collidesAgainst(WorldEntity* otherObject, const btCollisionShape* ownCollisionShape, btManifoldPoint& contactPoint)
    {
        orxout() << "detected collision" << endl;
        Bounce(otherObject);

        return true;
    }

    OrxoBlox* OrxoBloxBall::getOrxoBlox()
    {
        if (this->getGametype() != nullptr && this->getGametype()->isA(Class(OrxoBlox)))
        {
            OrxoBlox* orxobloxGametype = orxonox_cast<OrxoBlox*>(this->getGametype());
            return orxobloxGametype;
        }
        else orxout()<<"There is no Gametype for OrxoBlox! ask Anna"<< endl;
        return nullptr;
    }

    float OrxoBloxBall::getRadius() {
        return this->radius_;
    }


}