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source: code/trunk/src/modules/pickup/items/SpeedPickup.cc @ 7052

Last change on this file since 7052 was 6755, checked in by dafrick, 15 years ago

Fixed Segfault upon dropping of InvisiblePickup, while it was being used.

  • Property svn:eol-style set to native
File size: 7.1 KB
Line 
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 *      Eric Beier
24 *   Co-authors:
25 *      ...
26 *
27 */
28
29/**
30    @file SpeedPickup.cc
31    @brief Implementation of the SpeedPickup class.
32*/
33
34#include "SpeedPickup.h"
35
36#include "core/CoreIncludes.h"
37#include "core/XMLPort.h"
38#include "util/StringUtils.h"
39
40#include "worldentities/pawns/SpaceShip.h"
41#include "items/Engine.h"
42#include "pickup/PickupIdentifier.h"
43
44#include <sstream>
45
46
47namespace orxonox
48{
49    CreateFactory(SpeedPickup);
50
51    /**
52    @brief
53        Constructor. Registers the object and initializes the member variables.
54    */
55    SpeedPickup::SpeedPickup(BaseObject* creator) : Pickup(creator)
56    {
57        RegisterObject(SpeedPickup);
58
59        this->initialize();
60    }
61
62    /**
63    @brief
64        Destructor.
65    */
66    SpeedPickup::~SpeedPickup()
67    {
68
69    }
70
71    /**
72    @brief
73        Initializes the member variables.
74    */
75    void SpeedPickup::initialize(void)
76    {
77        this->duration_ = 0.0f;
78        this->speedAdd_ = 0.0f;
79        this->speedMultiply_ = 1.0f;
80
81        this->addTarget(ClassIdentifier<Engine>::getIdentifier());
82    }
83
84    /**
85    @brief
86        Initializes the PickupIdentifier of this pickup.
87    */
88    void SpeedPickup::initializeIdentifier(void)
89    {
90        std::stringstream stream;
91        stream << this->getDuration();
92        std::string type1 = "duration";
93        std::string val1 = stream.str();
94        this->pickupIdentifier_->addParameter(type1, val1);
95
96        stream.clear();
97        stream << this->getSpeedAdd();
98        std::string type2 = "speedAdd";
99        std::string val2 = stream.str();
100        this->pickupIdentifier_->addParameter(type2, val2);
101
102        stream.clear();
103        stream << this->getSpeedMultiply();
104        std::string type3 = "speedMultiply";
105        std::string val3 = stream.str();
106        this->pickupIdentifier_->addParameter(type3, val3);
107    }
108
109    /**
110    @brief
111        Method for creating a SpeedPickup object through XML.
112    */
113    void SpeedPickup::XMLPort(Element& xmlelement, orxonox::XMLPort::Mode mode)
114    {
115        SUPER(SpeedPickup, XMLPort, xmlelement, mode);
116
117        XMLPortParam(SpeedPickup, "duration", setDuration, getDuration, xmlelement, mode);
118        XMLPortParam(SpeedPickup, "speedAdd", setSpeedAdd, getSpeedAdd, xmlelement, mode);
119        XMLPortParam(SpeedPickup, "speedMultiply", setSpeedMultiply, getSpeedMultiply, xmlelement, mode);
120
121        this->initializeIdentifier();
122    }
123
124    /**
125    @brief
126        Is called when the pickup has transited from used to unused or the other way around.
127    */
128    void SpeedPickup::changedUsed(void)
129    {
130        SUPER(SpeedPickup, changedUsed);
131
132        //! If the pickup is not picked up nothing must be done.
133        if(!this->isPickedUp())
134            return;
135
136        Engine* engine = this->carrierToEngineHelper();
137        if(engine == NULL) //!< If the PickupCarrier is no Engine, then this pickup is useless and therefore is destroyed.
138            this->destroy();
139       
140        //! If the pickup has transited to used.
141        if(this->isUsed())
142        {
143            if(!this->getTimer()->isActive() && this->getTimer()->getRemainingTime() > 0.0f)
144            {
145                this->getTimer()->unpauseTimer();
146            }
147            else
148            {
149                this->startPickupTimer(this->getDuration());
150            }
151            engine->setSpeedAdd(this->getSpeedAdd());
152            engine->setSpeedMultiply(this->getSpeedMultiply());
153        }
154        else
155        {
156            engine->setSpeedAdd(0.0f);
157            engine->setSpeedMultiply(1.0f);
158           
159            if(this->isOnce())
160            {
161                if(!this->getTimer()->isActive() && this->getTimer()->getRemainingTime() == this->getDuration())
162                {
163                    this->destroy();
164                }
165                else
166                {
167                    this->getTimer()->pauseTimer();
168                }
169            }
170        }
171    }
172
173    /**
174    @brief
175        Helper to transform the PickupCarrier to a Pawn, and throw an error message if the conversion fails.
176    @return
177        A pointer to the Pawn, or NULL if the conversion failed.
178    */
179    Engine* SpeedPickup::carrierToEngineHelper(void)
180    {
181        PickupCarrier* carrier = this->getCarrier();
182        Engine* engine = dynamic_cast<Engine*>(carrier);
183
184        if(engine == NULL)
185        {
186            COUT(1) << "Invalid PickupCarrier in SpeedPickup." << std::endl;
187        }
188       
189        return engine;
190    }
191
192    /**
193    @brief
194        Creates a duplicate of the input OrxonoxClass.
195    @param item
196        A pointer to the Orxonox class.
197    */
198    void SpeedPickup::clone(OrxonoxClass*& item)
199    {
200        if(item == NULL)
201            item = new SpeedPickup(this);
202
203        SUPER(SpeedPickup, clone, item);
204
205        SpeedPickup* pickup = dynamic_cast<SpeedPickup*>(item);
206        pickup->setDuration(this->getDuration());
207        pickup->setSpeedAdd(this->getSpeedAdd());
208        pickup->setSpeedMultiply(this->getSpeedMultiply());
209
210        pickup->initializeIdentifier();
211    }
212
213    /**
214    @brief
215        Sets the duration.
216    @param duration
217        The duration
218    */
219    void SpeedPickup::setDuration(float duration)
220    {
221        if(duration >= 0.0f)
222        {
223            this->duration_ = duration;
224        }
225        else
226        {
227            COUT(1) << "Invalid duration in SpeedPickup." << std::endl;
228            this->duration_ = 0.0f;
229        }
230    }
231
232    /**
233    @brief
234        Sets the SpeedAdd
235    @param speedAdd
236        The added Speed
237    */
238    void SpeedPickup::setSpeedAdd(float speedAdd)
239    {
240        if(speedAdd >= 0.0f)
241        {
242            this->speedAdd_ = speedAdd;
243        }
244        else
245        {
246            COUT(1) << "Invalid speedAdd in SpeedPickup." << std::endl;
247            this->speedAdd_ = 0.0f;
248        }
249    }
250
251    /**
252    @brief
253        Sets the SpeedMultiply
254    @param speedAdd
255        The multiplied Speed
256    */
257    void SpeedPickup::setSpeedMultiply(float speedMultiply)
258    {
259        if(speedMultiply != 0)
260        {
261            this->speedMultiply_ = speedMultiply;
262        }
263        else
264        {
265            COUT(1) << "Invalid speedMultiply in SpeedPickup." << std::endl;
266            this->speedMultiply_ = 1.0f;
267        }
268    }
269
270    void SpeedPickup::pickupTimerCallback(void)
271    {       
272        this->setUsed(false);
273    }
274}
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