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source: code/trunk/src/libraries/core/Event.cc @ 7283

Last change on this file since 7283 was 7271, checked in by rgrieder, 14 years ago

There is no such word as "casted".
Also inserted 4 static_casts and replaced dynamic_cast with orxonox_cast in WeakPtr and SmartPtr.
Moreover found some weird code in Iterator.h with casting. Casting a NULL pointer always yields another NULL pointer.

  • Property svn:eol-style set to native
File size: 4.5 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 *      Fabian 'x3n' Landau
24 *   Co-authors:
25 *      ...
26 *
27 */
28
29#include "Event.h"
30
31#include "BaseObject.h"
32#include "Identifier.h"
33
34namespace orxonox
35{
36    /**
37        @brief Destructor: Deletes the functor of the event state.
38    */
39    EventState::~EventState()
40    {
41        if (this->statefunction_)
42            delete this->statefunction_;
43    }
44
45    /**
46        @brief Processes an event (calls the set-function if the necessary conditions are met).
47
48        @param event     The fired event
49        @param object    The object whose state is affected by the event (only needed for debug output)
50    */
51    void EventState::process(const Event& event, BaseObject* object)
52    {
53        if (this->bProcessingEvent_)
54        {
55            COUT(2) << "Warning: Detected Event loop in section \"" << event.statename_ << "\" of object \"" << object->getName() << "\" and fired by \"" << event.originator_->getName() << '"' << std::endl;
56            return;
57        }
58
59        this->bProcessingEvent_ = true;
60
61        COUT(4) << "Processing event (EventState) : originator: " << event.originator_->getIdentifier()->getName() << " (&" << event.originator_ << "), activate: " << event.activate_ << ", name: " << event.name_ << ", statename: " << event.statename_ << ", object: " << object->getIdentifier()->getName() << " (&" << object << ")" << "." << std::endl;
62
63        // check if the originator is an instance of the requested class
64        if (event.originator_->isA(this->subclass_))
65        {
66            // If the EventState doesn't act as an EventSink.
67            // actualize the activationcounter
68            if(!this->bSink_)
69            {
70                if (event.activate_)
71                    ++this->activeEvents_;
72                else
73                {
74                    --this->activeEvents_;
75
76                    if (this->activeEvents_ < 0)
77                        this->activeEvents_ = 0;
78                }
79            }
80
81            if (this->statefunction_->getParamCount() == 0 && event.activate_)
82            {
83                // if the eventfunction doesn't have a state, just call it whenever an activation-event comes in
84                (*this->statefunction_)();
85            }
86            else if (this->bSink_ || (!this->bSink_ && ((this->activeEvents_ == 1 && event.activate_) || (this->activeEvents_ == 0 && !event.activate_)) ) )
87            {
88                // if the eventfunction needs a state, we just call the function if the state changed from 0 to 1 (state = true) or from 1 to 0 (state = false) [but not if activeEvents_ is > 1]
89                if (this->statefunction_->getParamCount() == 1)
90                {
91                    // one argument: just the eventstate
92                    (*this->statefunction_)(event.activate_);
93                }
94                else if (this->statefunction_->getParamCount() >= 2)
95                {
96                    // two arguments: the eventstate and the originator
97                    if (this->subclass_->isExactlyA(ClassIdentifier<BaseObject>::getIdentifier()))
98                    {
99                        // if the subclass is BaseObject, we don't have to cast the pointer
100                        (*this->statefunction_)(event.activate_, event.originator_);
101                    }
102                    else
103                    {
104                        // else cast the pointer to the desired class
105                        void* castOriginator = event.originator_->getDerivedPointer(this->subclass_->getClassID());
106                        (*this->statefunction_)(event.activate_, castOriginator);
107                    }
108                }
109            }
110        }
111
112        this->bProcessingEvent_ = false;
113    }
114}
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