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source: code/branches/core7/src/modules/objects/triggers/TriggerBase.h @ 10362

Last change on this file since 10362 was 9667, checked in by landauf, 11 years ago

merged core6 back to trunk

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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 TriggerBase.h
31    @brief Definition of the TriggerBase class.
32    @ingroup Triggers
33*/
34
35#ifndef _TriggerBase_H__
36#define _TriggerBase_H__
37
38#include "objects/ObjectsPrereqs.h"
39
40#include <set>
41#include <string>
42
43#include "tools/interfaces/Tickable.h"
44#include "worldentities/StaticEntity.h"
45
46namespace orxonox {
47
48    /**
49    @brief
50        The different modes the trigger can be in.
51
52    @ingroup Triggers
53    */
54    namespace TriggerMode
55    {
56        enum Value
57        {
58            EventTriggerAND, //!< The <em>and</em> mode. The trigger can only trigger if all the children are active.
59            EventTriggerOR, //!< The <em>or</em> mode. The trigger can only trigger if at least one child is active.
60            EventTriggerXOR, //!< The <em>xor</em> mode. The trigger can only trigger if exactly one child is active.
61        };
62    }
63
64    /**
65    @brief
66        The TriggerBase class is a base class for the two types of triggers, the (normal) @ref orxonox::Trigger "Triggers" and the @ref orxonox::MultiTrigger "MultiTriggers", it encompasses the shared data and functionality between these two types of triggers, but is in itself not a trigger that has any meaningful behavior and thus should not be instantiated.
67
68    @author
69        Damian 'Mozork' Frick
70
71    @ingroup Triggers
72    */
73    class _ObjectsExport TriggerBase : public StaticEntity, public Tickable
74    {
75        public:
76            TriggerBase(Context* context);
77            virtual ~TriggerBase();
78
79            virtual void XMLPort(Element& xmlelement, XMLPort::Mode mode);  //!< Method for creating a TriggerBase object through XML.
80            virtual void tick(float dt); //!< A method that is executed each tick.
81
82            /**
83            @brief Check whether the trigger is active. (i.e. triggered to the outside)
84            @return Returns if the trigger is active.
85            */
86            virtual bool isActive(void) const
87                { return false; }
88
89            /**
90            @brief Set the delay of the trigger.
91            @param delay The delay to be set.
92            */
93            inline void setDelay(float delay)
94                { if(delay > 0.0f) this->delay_= delay; this->delayChanged(); }
95            /**
96            @brief Get the delay of the trigger.
97            @return The delay.
98            */
99            inline float getDelay(void) const
100                { return this->delay_; }
101            virtual void delayChanged(void) {}
102
103            /**
104            @brief Set switch-mode of the trigger.
105            @param bSwitch If true the trigger is set to switched.
106            */
107            inline void setSwitch(bool bSwitch)
108                { this->bSwitch_ = bSwitch; }
109            /**
110            @brief Get the switch-mode of the trigger.
111            @return Returns true if the trigger is in switch-mode.
112            */
113            inline bool getSwitch(void) const
114                { return this->bSwitch_; }
115
116            /**
117            @brief Set the stay-active-mode of the trigger.
118            @param bStayActive If true the trigger is set to stay active.
119            */
120            inline void setStayActive(bool bStayActive)
121                { this->bStayActive_ = bStayActive; }
122            /**
123            @brief Get the stay-active-mode of the trigger.
124            @return Returns true if the trigger stays active.
125            */
126            inline bool getStayActive(void) const
127                { return this->bStayActive_; }
128
129            /**
130            @brief Get the number of remaining activations of the trigger.
131            @return The number of activations. -1 denotes infinity.
132            */
133            inline int getActivations(void) const
134                { return this->remainingActivations_; }
135            /**
136            @brief Check whether the trigger has still at least one remaining activation.
137            @return Returns true if the trigger has remaining activations (i.e. the number of remaining activations is not zero).
138            */
139            inline bool hasRemainingActivations(void) const
140                { return this->remainingActivations_ > 0 || this->remainingActivations_ == INF_s; }
141
142            /**
143            @brief Set the invert-mode of triggerhe trigger.
144            @param bInvert If true the t is set to invert.
145            */
146            inline void setInvert(bool bInvert)
147                { this->bInvertMode_ = bInvert; }
148            /**
149            @brief Get the invert-mode of the trigger.
150            @return Returns true if the trigger is set to invert.
151            */
152            inline bool getInvert(void) const
153                { return this->bInvertMode_; }
154
155            void setMode(const std::string& modeName); //!< Set the mode of the trigger.
156            /**
157            @brief Set the mode of the trigger.
158            @param mode The mode of the trigger.
159            */
160            inline void setMode(TriggerMode::Value mode) //!< Get the mode of the trigger.
161                { this->mode_ = mode; }
162            const std::string& getModeString(void) const;
163            /**
164            @brief Get the mode of the trigger.
165            @return Returns and Enum for the mode of the trigger.
166            */
167            inline TriggerMode::Value getMode(void) const
168                { return mode_; }
169
170            void addTrigger(TriggerBase* trigger);
171            const TriggerBase* getTrigger(unsigned int index) const;
172
173            /**
174            @brief Check whether this trigger is a @ref orxonox::MultiTrigger "MultiTrigger".
175                This is done for performance reasons.
176            */
177            inline bool isMultiTrigger(void)
178                { return this->bMultiTrigger_; }
179
180        protected:
181            static const int INF_s; //!< Magic number for infinity.
182            //! Magic strings for the mode.
183            static const std::string and_s;
184            static const std::string or_s;
185            static const std::string xor_s;
186
187            /**
188            @brief Set the number of activations the trigger can go through.
189            @param activations The number of activations. -1 denotes infinitely many activations.
190            */
191            inline void setActivations(int activations)
192                { if(activations >= 0 || activations == INF_s) this->remainingActivations_ = activations; }
193               
194            inline bool hasRemainingActivations(void)
195                { return this->remainingActivations_ == INF_s || this->remainingActivations_  > 0; }
196
197            /**
198            @brief Adds the parent of a MultiTrigger.
199            @param parent A pointer to the parent MultiTrigger.
200            */
201            inline void addParentTrigger(TriggerBase* parent)
202                { this->parent_ = parent; }
203
204            bool bFirstTick_; //!< Bool to check whether this is the first tick.
205
206            float delay_; //!< The delay that is imposed on all new trigger events.
207            bool bSwitch_; //!< Bool for the switch-mode, if true the trigger behaves like a switch.
208            bool bStayActive_; //!< Bool for the stay-active-mode, if true the trigger stays active after its last activation.;
209
210            int remainingActivations_; //!< The remaining activations of this trigger.
211
212            bool bInvertMode_; //!< Bool for the invert-mode, if true the trigger is inverted.
213            TriggerMode::Value mode_; //!< The mode of the trigger.
214
215            TriggerBase* parent_; //!< The parent of this trigger.
216            std::set<TriggerBase*> children_; //!< The children of this trigger.
217
218            bool bMultiTrigger_; //!< Specifies whether this trigger is a MultiTrigger.
219
220    };
221}
222
223#endif /* _Trigger_H__ */
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