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source: code/trunk/src/orxonox/interfaces/PickupCarrier.cc @ 8300

Last change on this file since 8300 was 8300, checked in by dafrick, 13 years ago

Apparently bug needs some more fixing.

File size: 5.2 KB
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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 *      Damian 'Mozork' Frick
24 *   Co-authors:
25 *      ...
26 *
27 */
28
29/**
30    @file PickupCarrier.cc
31    @brief Implementation of the PickupCarrier class.
32*/
33
34#include "PickupCarrier.h"
35
36#include "core/CoreIncludes.h"
37#include "core/Identifier.h"
38
39#include "Pickupable.h"
40
41namespace orxonox {
42
43    /**
44    @brief
45        Constructor. Registers the object.
46    */
47    PickupCarrier::PickupCarrier()
48    {
49        RegisterRootObject(PickupCarrier);
50    }
51
52    /**
53    @brief
54        Destructor.
55    */
56    PickupCarrier::~PickupCarrier()
57    {
58
59    }
60
61    /**
62    @brief
63        Is called before the PickupCarrier is effectively destroyed.
64    */
65    void PickupCarrier::preDestroy(void)
66    {
67        std::set<Pickupable*>::iterator it = this->pickups_.begin();
68        Pickupable* temp;
69        // Iterate over all pickups that are attached to this PickupCarrier and destroy them.
70        while(it != this->pickups_.end())
71        {
72            temp = *it;
73            (*it)->carrierDestroyed();
74            it = this->pickups_.begin();
75            if(it != this->pickups_.end() && temp == *it) // Infinite loop avoidance, in case the pickup wasn't removed from the carrier somewhere in the carrierDestroy() procedure.
76            {
77                COUT(2) << "Oops. In a PickupCarrier, while cleaning up, a Pickupable (&" << temp << ") didn't unregister itself as it should have." << std::endl;;
78                it++;
79            }
80        }
81
82        this->pickups_.clear();
83    }
84
85    /**
86    @brief
87        Can be used to check whether the PickupCarrier or a child of his is a target ot the input Pickupable.
88    @param pickup
89        A pointer to the Pickupable.
90    @return
91        Returns true if the PickupCarrier or one of its children is a target, false if not.
92    */
93    bool PickupCarrier::isTarget(const Pickupable* pickup) const
94    {
95        if(pickup->isTarget(this)) // If the PickupCarrier itself is a target.
96            return true;
97
98        // Go recursively through all children to check whether they are a target.
99        std::vector<PickupCarrier*>* children = this->getCarrierChildren();
100        for(std::vector<PickupCarrier*>::const_iterator it = children->begin(); it != children->end(); it++)
101        {
102            if((*it)->isTarget(pickup))
103                return true;
104        }
105
106        children->clear();
107        delete children;
108
109        return false;
110    }
111
112    /**
113    @brief
114        Get the carrier that is both a child of the PickupCarrier (or the PickupCarrier itself) and a target of the input Pickupable.
115    @param pickup
116        A pounter to the Pickupable.
117    @return
118        Returns a pointer to the PickupCarrier that is the target of the input Pickupable.
119    */
120    PickupCarrier* PickupCarrier::getTarget(const Pickupable* pickup)
121    {
122        if(!this->isTarget(pickup))
123            return NULL;
124
125        if(pickup->isTarget(this)) // If the PickupCarrier itself is a target.
126            return this;
127
128        // Go recursively through all children to check whether they are the target.
129        std::vector<PickupCarrier*>* children = this->getCarrierChildren();
130        for(std::vector<PickupCarrier*>::iterator it = children->begin(); it != children->end(); it++)
131        {
132            if(pickup->isTarget(*it))
133                return *it;
134        }
135
136        children->clear();
137        delete children;
138
139        return NULL;
140    }
141
142    /**
143    @brief
144        Adds a Pickupable to the list of pickups that are carried by this PickupCarrier.
145    @param pickup
146        A pointer to the pickup to be added.
147    @return
148        Returns true if successfull, false if the Pickupable was already present.
149    */
150    bool PickupCarrier::addPickup(Pickupable* pickup)
151    {
152        COUT(4) << "Adding Pickupable (&" << pickup << ") to PickupCarrier (&" << this << ")" << std::endl;
153        return this->pickups_.insert(pickup).second;
154    }
155
156    /**
157    @brief
158        Removes a Pickupable from the list of pickups that are carried by this PickupCarrier.
159    @param pickup
160        A pointer to the pickup to be removed.
161    @return
162        Returns true if successfull, false if the Pickupable was not present in the list.
163    */
164    bool PickupCarrier::removePickup(Pickupable* pickup)
165    {
166        COUT(4) << "Removing Pickupable (&" << pickup << ") from PickupCarrier (&" << this << ")" << std::endl;
167        return this->pickups_.erase(pickup) == 1;
168    }
169
170}
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