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source: code/trunk/src/modules/pong/PongBall.cc @ 10190

Last change on this file since 10190 was 9945, checked in by landauf, 11 years ago

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[2825]1/*
2 *   ORXONOX - the hottest 3D action shooter ever to exist
3 *                    > www.orxonox.net <
4 *
5 *
6 *   License notice:
7 *
8 *   This program is free software; you can redistribute it and/or
9 *   modify it under the terms of the GNU General Public License
10 *   as published by the Free Software Foundation; either version 2
11 *   of the License, or (at your option) any later version.
12 *
13 *   This program is distributed in the hope that it will be useful,
14 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
15 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 *   GNU General Public License for more details.
17 *
18 *   You should have received a copy of the GNU General Public License
19 *   along with this program; if not, write to the Free Software
20 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
21 *
22 *   Author:
23 *      Fabian 'x3n' Landau
24 *   Co-authors:
25 *      ...
26 *
27 */
28
[8108]29/**
30    @file PongBall.cc
31    @brief Implementation of the PongBall class.
32*/
33
[2825]34#include "PongBall.h"
35
36#include "core/CoreIncludes.h"
[2896]37#include "core/GameMode.h"
[8108]38
[5735]39#include "gametypes/Gametype.h"
[8108]40
[5725]41#include "PongBat.h"
[2825]42
[9939]43#include "sound/WorldSound.h"
44#include "core/XMLPort.h"
45
[2825]46namespace orxonox
47{
[9667]48    RegisterClass(PongBall);
[2825]49
[2885]50    const float PongBall::MAX_REL_Z_VELOCITY = 1.5;
51
[8108]52    /**
53    @brief
54        Constructor. Registers and initializes the object.
55    */
[9667]56    PongBall::PongBall(Context* context)
57        : MovableEntity(context)
[2825]58    {
59        RegisterObject(PongBall);
60
61        this->speed_ = 0;
[5929]62        this->accelerationFactor_ = 1.0f;
[2825]63        this->bat_ = 0;
[7885]64        this->bDeleteBats_ = false;
[3084]65        this->batID_ = new unsigned int[2];
66        this->batID_[0] = OBJECTID_UNKNOWN;
67        this->batID_[1] = OBJECTID_UNKNOWN;
[3196]68        this->relMercyOffset_ = 0.05f;
[3108]69
[3084]70        this->registerVariables();
[9939]71
72        //initialize sound
73        if (GameMode::isMaster())
74             {
75                 this->defScoreSound_ = new WorldSound(this->getContext());
76                 this->defScoreSound_->setVolume(1.0f);
77                 this->defBatSound_ = new WorldSound(this->getContext());
78                 this->defBatSound_->setVolume(0.4f);
79                 this->defBoundarySound_ = new WorldSound(this->getContext());
80                 this->defBoundarySound_->setVolume(0.5f);
81             }
82             else
83             {
84                 this->defScoreSound_ = 0;
85                 this->defBatSound_ = 0;
86                 this->defBoundarySound_ = 0;
87             }
[5929]88    }
[3108]89
[8108]90    /**
91    @brief
92        Destructor.
93    */
[5929]94    PongBall::~PongBall()
95    {
[7885]96        if (this->isInitialized())
97        {
98            if (this->bDeleteBats_)
99                delete[] this->bat_;
100
101            delete[] this->batID_;
102        }
[2825]103    }
[3108]104
[9939]105    //xml port for loading sounds
106    void PongBall::XMLPort(Element& xmlelement, XMLPort::Mode mode)
107    {
108        SUPER(PongBall, XMLPort, xmlelement, mode);
109        XMLPortParam(PongBall, "defScoreSound",  setDefScoreSound,  getDefScoreSound,  xmlelement, mode);
110        XMLPortParam(PongBall, "defBatSound",  setDefBatSound,  getDefBatSound,  xmlelement, mode);
111        XMLPortParam(PongBall, "defBoundarySound",  setDefBoundarySound,  getDefBoundarySound,  xmlelement, mode);
112    }
113
[8108]114    /**
115    @brief
116        Register variables to synchronize over the network.
117    */
[3084]118    void PongBall::registerVariables()
119    {
120        registerVariable( this->fieldWidth_ );
121        registerVariable( this->fieldHeight_ );
122        registerVariable( this->batlength_ );
123        registerVariable( this->speed_ );
124        registerVariable( this->relMercyOffset_ );
125        registerVariable( this->batID_[0] );
[3280]126        registerVariable( this->batID_[1], VariableDirection::ToClient, new NetworkCallback<PongBall>( this, &PongBall::applyBats) );
[3084]127    }
[2825]128
[8108]129    /**
130    @brief
131        Is called every tick.
132        Handles the movement of the ball and its interaction with the boundaries and bats.
133    @param dt
134        The time since the last tick.
135    */
[2825]136    void PongBall::tick(float dt)
137    {
138        SUPER(PongBall, tick, dt);
139
[8108]140        // Get the current position, velocity and acceleration of the ball.
[5929]141        Vector3 position = this->getPosition();
142        Vector3 velocity = this->getVelocity();
143        Vector3 acceleration = this->getAcceleration();
144
[8108]145        // 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).
[5929]146        if (position.z > this->fieldHeight_ / 2 || position.z < -this->fieldHeight_ / 2)
[2825]147        {
[9939]148            defBoundarySound_->play(); //play boundary sound
[9945]149            // Its velocity in z-direction is inverted (i.e. it bounces off).
[5929]150            velocity.z = -velocity.z;
[8108]151            // And its position is set as to not overstep the boundary it has just crossed.
[5929]152            if (position.z > this->fieldHeight_ / 2)
153                position.z = this->fieldHeight_ / 2;
154            if (position.z < -this->fieldHeight_ / 2)
155                position.z = -this->fieldHeight_ / 2;
[2825]156
[5929]157            this->fireEvent();
158        }
[2825]159
[8108]160        // If the ball has crossed the left or right boundary of the playing field (i.e. a player has just scored, if the bat isn't there to parry).
[5929]161        if (position.x > this->fieldWidth_ / 2 || position.x < -this->fieldWidth_ / 2)
162        {
163            float distance = 0;
[2825]164
[8108]165            if (this->bat_ != NULL) // If there are bats.
[2825]166            {
[8108]167                // If the right boundary has been crossed.
168                if (position.x > this->fieldWidth_ / 2 && this->bat_[1] != NULL)
[2825]169                {
[8108]170                    // Calculate the distance (in z-direction) between the ball and the center of the bat, weighted by half of the effective length of the bat (with additional 10%)
[5929]171                    distance = (position.z - this->bat_[1]->getPosition().z) / (this->fieldHeight_ * (this->batlength_ * 1.10f) / 2);
[8108]172                    if (fabs(distance) <= 1) // If the bat is there to parry.
[2825]173                    {
[9939]174                        defBatSound_->play(); //play bat sound
[9945]175                        // Set the ball to be exactly at the boundary.
[5929]176                        position.x = this->fieldWidth_ / 2;
[8108]177                        // Invert its velocity in x-direction (i.e. it bounces off).
[5929]178                        velocity.x = -velocity.x;
[8108]179                        // Adjust the velocity in the z-direction, depending on where the ball hit the bat.
[5929]180                        velocity.z = distance * distance * sgn(distance) * PongBall::MAX_REL_Z_VELOCITY * this->speed_;
181                        acceleration = this->bat_[1]->getVelocity() * this->accelerationFactor_ * -1;
[6417]182
[5929]183                        this->fireEvent();
184                    }
[8108]185                    // If the left player scores.
[5929]186                    else if (GameMode::isMaster() && position.x > this->fieldWidth_ / 2 * (1 + this->relMercyOffset_))
187                    {
[9945]188                        defScoreSound_->play();//play score sound
[5929]189                        if (this->getGametype() && this->bat_[0])
[2825]190                        {
[5929]191                            this->getGametype()->playerScored(this->bat_[0]->getPlayer());
192                            return;
[2825]193                        }
194                    }
[5929]195                }
[8108]196                // If the left boundary has been crossed.
197                else if (position.x < -this->fieldWidth_ / 2 && this->bat_[0] != NULL)
[5929]198                {
[8108]199                    // Calculate the distance (in z-direction) between the ball and the center of the bat, weighted by half of the effective length of the bat (with additional 10%)
[5929]200                    distance = (position.z - this->bat_[0]->getPosition().z) / (this->fieldHeight_ * (this->batlength_ * 1.10f) / 2);
[8108]201                    if (fabs(distance) <= 1) // If the bat is there to parry.
[2825]202                    {
[9939]203                        defBatSound_->play(); //play bat sound
[9945]204                        // Set the ball to be exactly at the boundary.
[5929]205                        position.x = -this->fieldWidth_ / 2;
[8108]206                        // Invert its velocity in x-direction (i.e. it bounces off).
[5929]207                        velocity.x = -velocity.x;
[8108]208                        // Adjust the velocity in the z-direction, depending on where the ball hit the bat.
[5929]209                        velocity.z = distance * distance * sgn(distance) * PongBall::MAX_REL_Z_VELOCITY * this->speed_;
210                        acceleration = this->bat_[0]->getVelocity() * this->accelerationFactor_ * -1;
211
212                        this->fireEvent();
213                    }
[8108]214                    // If the right player scores.
[5929]215                    else if (GameMode::isMaster() && position.x < -this->fieldWidth_ / 2 * (1 + this->relMercyOffset_))
216                    {
[9945]217                        defScoreSound_->play();//play score sound
[5929]218                        if (this->getGametype() && this->bat_[1])
[2825]219                        {
[5929]220                            this->getGametype()->playerScored(this->bat_[1]->getPlayer());
221                            return;
[2825]222                        }
223                    }
224                }
225            }
226        }
[3084]227
[8108]228        // Set the position, velocity and acceleration of the ball, if they have changed.
[5929]229        if (acceleration != this->getAcceleration())
230            this->setAcceleration(acceleration);
231        if (velocity != this->getVelocity())
[3084]232            this->setVelocity(velocity);
[5929]233        if (position != this->getPosition())
[3084]234            this->setPosition(position);
[2825]235    }
236
[8108]237    /**
238    @brief
239        Set the speed of the ball (in x-direction).
240    @param speed
241        The speed to be set.
242    */
[2825]243    void PongBall::setSpeed(float speed)
244    {
[8108]245        if (speed != this->speed_) // If the speed changes
[2825]246        {
247            this->speed_ = speed;
248
[8108]249            // Set the speed in the direction of the balls current velocity.
[2825]250            Vector3 velocity = this->getVelocity();
251            if (velocity.x != 0)
252                velocity.x = sgn(velocity.x) * this->speed_;
[8108]253            else // If the balls current velocity is zero, the speed is set in a random direction.
[2825]254                velocity.x = this->speed_ * sgn(rnd(-1,1));
255
256            this->setVelocity(velocity);
257        }
258    }
[3196]259
[8108]260    /**
261    @brief
262        Set the bats for the ball.
263    @param bats
264        An array (of size 2) of weak pointers, to be set as the new bats.
265    */
[7852]266    void PongBall::setBats(WeakPtr<PongBat>* bats)
[3196]267    {
[8108]268        if (this->bDeleteBats_) // If there are already some bats, delete them.
[7885]269        {
270            delete[] this->bat_;
271            this->bDeleteBats_ = false;
272        }
273
[3196]274        this->bat_ = bats;
[8108]275        // Also store their object IDs, for synchronization.
[3196]276        this->batID_[0] = this->bat_[0]->getObjectID();
277        this->batID_[1] = this->bat_[1]->getObjectID();
278    }
279
[8108]280    /**
281    @brief
282        Get the bats over the network.
283    */
[3196]284    void PongBall::applyBats()
285    {
[8108]286        // Make space for the bats, if they don't exist, yet.
287        if (this->bat_ == NULL)
[7885]288        {
289            this->bat_ = new WeakPtr<PongBat>[2];
[7886]290            this->bDeleteBats_ = true;
[7885]291        }
292
[3196]293        if (this->batID_[0] != OBJECTID_UNKNOWN)
[3325]294            this->bat_[0] = orxonox_cast<PongBat*>(Synchronisable::getSynchronisable(this->batID_[0]));
[3196]295        if (this->batID_[1] != OBJECTID_UNKNOWN)
[3325]296            this->bat_[1] = orxonox_cast<PongBat*>(Synchronisable::getSynchronisable(this->batID_[1]));
[3196]297    }
[9939]298
299    void PongBall::setDefScoreSound(const std::string &pongSound)
300    {
301        if( defScoreSound_ )
302            defScoreSound_->setSource(pongSound);
303        else
304            assert(0); // This should never happen, because soundpointer is only available on master
305    }
306
307    const std::string& PongBall::getDefScoreSound()
308    {
309        if( defScoreSound_ )
310            return defScoreSound_->getSource();
311        else
312            assert(0);
313        return BLANKSTRING;
314    }
315
316    void PongBall::setDefBatSound(const std::string &pongSound)
317    {
318        if( defBatSound_ )
319            defBatSound_->setSource(pongSound);
320        else
321            assert(0); // This should never happen, because soundpointer is only available on master
322    }
323
324    const std::string& PongBall::getDefBatSound()
325    {
326        if( defBatSound_ )
327            return defBatSound_->getSource();
328        else
329            assert(0);
330        return BLANKSTRING;
331    }
332
333    void PongBall::setDefBoundarySound(const std::string &pongSound)
334    {
335        if( defBoundarySound_ )
336            defBoundarySound_->setSource(pongSound);
337        else
338            assert(0); // This should never happen, because soundpointer is only available on master
339    }
340
341    const std::string& PongBall::getDefBoundarySound()
342    {
343        if( defBoundarySound_ )
344            return defBoundarySound_->getSource();
345        else
346            assert(0);
347        return BLANKSTRING;
348    }
[2825]349}
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