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Changeset 8213 for code/trunk/doc


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Timestamp:
Apr 9, 2011, 3:33:06 PM (14 years ago)
Author:
dafrick
Message:

Adding changes made to DistanceTrigger also in trunk.
Also documenting trigger.

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1 edited

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  • code/trunk/doc/api/groups/Triggers.dox

    r8108 r8213  
    77    @defgroup NormalTrigger Trigger
    88    @ingroup Triggers
     9   
     10    @ref orxonox::Trigger "Triggers" are objects which react to certain events by changing their boolean state. That state is the trigger's activity @ref orxonox::Trigger can be either <em>active</em> or <em>not active</em>.
     11   
     12    @section TriggerTechnicalDetails Technical Details
     13    A common @ref orxonox::Trigger "Trigger" is an object that can either be <em>active</em> or <em>inactive</em>, with a specified behavior how to switch between the two. Each time a switch occurs an @ref orxonox::Event "Event" is fired (see the @ref Eventsystem "Eventsystem" for more information about how that works exactly), with th @ref orxonox::Trigger "Trigger" as the originator. This way the entity that reacts to the @ref orxonox::Trigger "Trigger" triggering receives information about the @ref orxonox::Trigger "Trigger" that created the @ref orxonox::Event "Event". If the @ref orxonox::Trigger "Trigger" is also a @ref orxonox::PlayerTrigger "PlayerTrigger", under some conditions, the entity that caused the @ref orxonox::Trigger "Trigger" to trigger can be accessed.
     14
     15    Also, just as with all triggers, @ref orxonox::Trigger "Triggers" can be nested (even with e.g. @ref orxonox::MultiTrigger "MultiTriggers").
     16    @code
     17    <Trigger switch="true" delay="2">
     18        <DistanceTrigger position="100,0,0" distance="80" />
     19        <EventMultiTrigger ... />
     20    </Trigger>
     21    @endcode
     22
     23    @ref orxonox::Trigger "Triggers" also allow for additional complexity which can be added through the choice of the parameters explained below.
     24    But first it is important to understand a small implementation detail. There is a distinction between the @ref orxonox::Trigger "Trigger" being triggered (there is the state <em>triggered</em> for that) and the @ref orxonox::Trigger "Trigger" being active (for that is the state <em>activity</em>). From the outside only the <em>activity</em> is visible. The state <em>triggered</em> tells us whether the trigger is actually triggered, but it could pretend (for some reason, some of which we will see shortly) to be <em>active</em> to the outside, while it in fact isn't. The standard behavior is, that the <em>activity</em> changes, when the @ref orxonox::Trigger "Trigger" transits from being <em>triggered</em> to being <em>not triggered</em> or the other way around.
     25
     26    The parameters of the @ref orxonox::Trigger "Trigger" are:
     27    - @b delay The delay is the time in seconds, that the trigger waits until it reacts (i.e. changes it's state) to the triggering condition being fulfilled. Internally this is handled by a state queue coupled with a counter, for each state that is delayed. The state becomes <em>active</em> when the counter runs out. This allows the @ref orxonox::Trigger "Trigger" to work even if the delay changes at runtime. However if the delay changes it only affects newly arriving states not the ones already in the queue. The default is <code>0.0</code>.
     28    - @b switch Switch is a boolean, if <code>true</code> the @ref orxonox::Trigger "Trigger" is in <em>switch-mode</em>, meaning, that the <em>activity</em> changes only when the trigger is <em>triggered</em>, not when it is <em>not triggered</em> (Just like a light switch does). This means, that in <em>switch-mode</em> the <em>activity</em> only changes, when the trigger changes from being <em>not triggered</em> to being <em>triggered</em> but not the other way around. The default is <code>false</code>.
     29    - @b stayActive Stay active is also a boolean, if <code>true</code> the @ref orxonox::Trigger "Trigger" stays active after it has been activated as many times as specified by the parameter <em>activations</em>. In essence this means, that after the last time it is activated it cannot be deactivated. The default is <code>false</code>.
     30    - @b activations Activations is the number of times the @ref orxonox::Trigger "Trigger" can be activated until the trigger can't be triggered anymore. The default is <code>-1</code>, which denotes infinity.
     31    - @b invert Invert is a boolean, if <code>true</code> the @ref orxonox::Trigger "Trigger" is in <em>invert-mode</em>, meaning, that if the triggering condition is fulfilled the @ref orxonox::Trigger "Trigger" will have the state <em>not triggered</em> and and if the condition is not fulfilled it will have the state <em>triggered</em>. In short it inverts the behavior of the @ref orxonox::Trigger "Trigger". The default is <code>false</code>.
     32    - @b mode The mode describes how the @ref orxonox::Trigger "Trigger" acts in relation to all the triggers (its children), that are appended to it. There are 3 modes: <em>and</em>, meaning that the @ref orxonox::Trigger "Trigger" can only be triggered if all the appended triggers are active. <em>or</em>, meaning that the @ref orxonox::Trigger "Trigger" can only be triggered if at least one of the appended triggers is active. And <em>xor</em>, meaning that the @ref orxonox::Trigger "Trigger" can only be triggered if one and only one appended trigger is active. Note, that I wrote 'can only be active', that implies, that there is an additional condition to the <em>activity</em> of the @ref orxonox::Trigger "Trigger" and that is the fulfillment of the triggering condition (the @ref orxonox::Trigger "Trigger" class itself doesn't have one, but all derived classes should). Also bear in mind, that the <em>activity</em> of a @ref orxonox::Trigger "Trigger" is still coupled to the object that triggered it. The default is <em>and</em>.
     33
     34    @subsection Sub-typesOfTriggers Sub-types of Triggers
     35
     36    @subsubsection EventTrigger EventTrigger
     37    An @ref orxonox::EventTrigger "EventTrigger" can either be used to be triggered when an @ref orxonox::Event "Event", that itself is triggering, arrives at its event port.
     38
     39    A common usage could look like this:
     40    @code
     41    <EventTrigger invert="true" delay="1">
     42        <events>
     43            <trigger>
     44                <Trigger ... />
     45                <Trigger ... />
     46            </trigger>
     47        </events>
     48    </EventTrigger>
     49    @endcode
     50
     51    @subsubsection DistanceTrigger DistanceTrigger
     52    The @ref orxonox::DistanceTrigger "DistanceTrigger" is a Trigger that triggers whenever an object (that is of the specified target type) is in a specified range of the @ref orxonox::DistanceTrigger "DistanceTrigger". The object can be specified further by setting the <em>beaconMode</em> and attaching a @ref orxonox::DistanceTriggerBeacon "DistanceTriggerBeacon" to the object.
     53    Parameters are (additional to the ones of Trigger):
     54    - @b distance Which specifies the maximum distance at which the @ref orxonox::DistanceTrigger "DistanceTrigger" still triggers, i.e. its range. Default is <code>100</code>.
     55    - @b target Which specifies the class of objects that can trigger the @ref orxonox::DistanceTrigger "DistanceTrigger". Default is <code>"Pawn"</code>.
     56    - @b beaconMode Which specifies, whether the @ref orxonox::DistanceTrigger "DistanceTrigger" operates on @ref orxonox::DistanceTriggerBeacon "DistanceTriggerBeacons" or not. If <em>off</em> the DistanceMultiTrigger works as usual. If set to <em>identify</em> the @ref orxonox::DistanceTrigger "DistanceTrigger" is only triggered by objects that have a @ref orxonox::DistanceTriggerBeacon "DistanceTriggerBeacon", with the same name as specified in <em>targetname</em>, attached to them. If set to <em>exclude</em> the @ref orxonox::DistanceTrigger "DistanceTrigger" is only triggered by objects that don't have a @ref orxonox::DistanceTriggerBeacon "DistanceTriggerBeacon", with the same name as specified in <em>targetname</em>, attached to them. Default is <em>off</em>.
     57    - @b targetname Which specifies the name @ref oroxnox::DistanceTriggerBeacon "DistanceTriggerBeacons" need to have to make the @ref orxonox::DistanceTrigger "DistanceTrigger" react to them if it is in <em>beacon-mode</em> (the beaconMode is not <em>off</em>).
     58
     59    A simple @ref orxonox::DistanceTrigger "DistanceTrigger" could look like this:
     60    @code
     61    <DistanceTrigger position="0,0,0" switch="true" target="Pawn" distance="20" />
     62    @endcode
     63
     64    An implementation that only reacts to objects with a @ref orxonox::DistanceTriggerBeacon "DistanceTriggerBeacon" attached would look like this:
     65    @code
     66    <DistanceTrigger position="0,0,0" target="Pawn" beaconMode="identify" targetname="beacon1" distance="30" />
     67    @endcode
     68    This particular @ref orxonox::DistanceTrigger "DistanceTrigger" would only react if an object was in range, that had a @ref orxonox::DistanceTriggerBeacon "DistanceTriggerBeacon" with the name <em>beacon1</em> attached.
    969
    1070    @defgroup MultiTrigger MultiTrigger
    1171    @ingroup Triggers
    1272
    13     @ref orxonox::MultiTrigger "MultiTriggers" are (as they are @ref orxonox::TriggerBase "Triggers") objects which react to certain events. They offer all the functionality that the common @ref orxonox::Trigger "Triggers" do with one significant difference. The common @ref orxonox::Trigger "Trigger" has just one state, it can either be <em>triggered</em> or <em>not triggered</em>, it doesn't discriminate between who's triggering (or not triggering) it. A @ref orxonox::MultiTrigger "MultiTrigger", on the other hand, has a distinct state (<em>triggered</em> or <em>not triggered</em>) for each entity that is defined as being able to trigger said @ref orxonox::MultiTrigger "MultiTrigger".
     73    @ref orxonox::MultiTrigger "MultiTriggers" are (as they are @ref orxonox::TriggerBase "Triggers") objects which react to certain events. They offer all the functionality that the common @ref orxonox::Trigger "Triggers" do with one significant difference. The common @ref orxonox::Trigger "Trigger" has just one state, it can either be <em>active</em> or <em>not acive</em>, it doesn't discriminate between who's triggering (or not triggering) it. A @ref orxonox::MultiTrigger "MultiTrigger", on the other hand, has a distinct state (<em>active</em> or <em>not actve</em>) for each entity that is defined as being able to trigger said @ref orxonox::MultiTrigger "MultiTrigger".
    1474
    15     This difference becomes significant, when, for example, you want a @ref orxonox::DistanceTrigger "DistanceTrigger" to trigger a @ref orxonox::QuestEffectBeacon "QuestEffectBeacon" to hand out a @ref orxonox::Quest "Quest" to any @ref orxonox::Pawn "Pawn" that enters its range. With a simple @ref orxonox::DistanceTrigger "DistanceTrigger" (as opposed to the more complex @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger") the first @ref orxonox::Pawn "Pawn" to be in range would trigger it an receive the @ref orxonox::Quest "Quest", however if a second @ref orxonox::Pawn "Pawn" would enter the range, while the first @ref orxonox::Pawn "Pawn" still is in the range nothing would happen and even after the first @ref orxonox::Pawn "Pawn" left nothing would happen, since the whole time the @ref orxonox::DistanceTrigger "DistanceTrigger" would just be triggered. In contrast with a @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" the first @ref orxonox::Pawn "Pawn" would enter the range and the @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" would have the state <em>triggered</em> for this exact @ref orxonox::Pawn "Pawn" (but for none else) and thus the @ref orxonox::Pawn "Pawn" would receive the @ref orxonox::Quest "Quest" and when the second @ref orxonox::Pawn "Pawn" enters the range the state of the @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" for that second @ref orxonox::Pawn "Pawn" would change to <em>triggered</em> and it would receive the @ref orxonox::Quest "Quest" as well.
     75    This difference becomes significant, when, for example, you want a @ref orxonox::DistanceTrigger "DistanceTrigger" to trigger a @ref orxonox::QuestEffectBeacon "QuestEffectBeacon" to hand out a @ref orxonox::Quest "Quest" to any @ref orxonox::Pawn "Pawn" that enters its range. With a simple @ref orxonox::DistanceTrigger "DistanceTrigger" (as opposed to the more complex @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger") the first @ref orxonox::Pawn "Pawn" to be in range would trigger it an receive the @ref orxonox::Quest "Quest", however if a second @ref orxonox::Pawn "Pawn" would enter the range, while the first @ref orxonox::Pawn "Pawn" still is in the range nothing would happen and even after the first @ref orxonox::Pawn "Pawn" left nothing would happen, since the whole time the @ref orxonox::DistanceTrigger "DistanceTrigger" would just be <em>active</em>. In contrast with a @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" the first @ref orxonox::Pawn "Pawn" would enter the range and the @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" would have the state <em>active</em> for this exact @ref orxonox::Pawn "Pawn" (but for none else) and thus the @ref orxonox::Pawn "Pawn" would receive the @ref orxonox::Quest "Quest" and when the second @ref orxonox::Pawn "Pawn" enters the range the state of the @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" for that second @ref orxonox::Pawn "Pawn" would change to <em>active</em> and it would receive the @ref orxonox::Quest "Quest" as well.
    1676
    1777    @section WhenToUseMultiTriggers When to use MultiTriggers
    … …  
    2080    @section HowToUseMultiTriggers How to use MultiTriggers
    2181    ...
     82   
     83    @section HowToCreateANewMultiTrigger How to create a new MultiTrigger.
     84    ...
    2285
    2386    @section MultiTriggerTechnicalDetails Technical Details
    24     A common @ref orxonox::Trigger "Trigger" is an object that can either be <em>active</em> or <em>inactive</em>, with a specified behavior how to switch between the two. A @ref orxonox::MultiTrigger "MultiTrigger" generalizes that behavior for multiple objects triggering the trigger. A @ref orxonox::MultiTrigger "MultiTrigger" can be <em>active</em> or <em>inactive</em> for any object triggering it, with the state for each object being completely independent of the state for all other objects. Each time a switch occurs an @ref orxonox::Event "Event" is fired, with a @ref orxonox::MultiTriggerContainer "MultiTriggerContainer" as the originator, containing a pointer to the @ref orxonox::MultiTrigger "MultiTrigger" that caused the @ref orxonox::Event "Event" and a pointer to the object that caused the trigger to change it's activity. This way the entity that reacts to the @ref orxonox::MultiTrigger "MultiTrigger" triggering receives the information it needs about the entity that triggered the @ref orxonox::MultiTrigger "MultiTrigger".
     87    A common @ref orxonox::Trigger "Trigger" is an object that can either be <em>active</em> or <em>inactive</em>, with a specified behavior how to switch between the two. A @ref orxonox::MultiTrigger "MultiTrigger" generalizes that behavior for multiple objects triggering the trigger. A @ref orxonox::MultiTrigger "MultiTrigger" can be <em>active</em> or <em>inactive</em> for any object triggering it, with the state for each object being completely independent of the state for all other objects. Each time a switch occurs an @ref orxonox::Event "Event" is fired (see the @ref Eventsystem "Eventsystem" for more information about how that works exactly), with a @ref orxonox::MultiTriggerContainer "MultiTriggerContainer" as the originator, containing a pointer to the @ref orxonox::MultiTrigger "MultiTrigger" that caused the @ref orxonox::Event "Event" and a pointer to the object that caused the trigger to change it's activity. This way the entity that reacts to the @ref orxonox::MultiTrigger "MultiTrigger" triggering receives the information it needs about the entity that triggered the @ref orxonox::MultiTrigger "MultiTrigger".
    2588
    26     Also, just as with all triggers, @ref orxonox::MultiTrigger "MultiTriggers" can be nested (event with triggers other than @ref orxonox::MultiTrigger "MultiTriggers").
     89    Also, just as with all triggers, @ref orxonox::MultiTrigger "MultiTriggers" can be nested (even with triggers other than @ref orxonox::MultiTrigger "MultiTriggers").
    2790    @code
    2891    <MultiTrigger switch="true" delay="2">
    … …  
    3396
    3497    @ref orxonox::MultiTrigger "MultiTriggers" also allow for additional complexity which can be added through the choice of the parameters (some of which are also present in the common @ref orxonox::Trigger "Trigger") explained (briefly) below.
    35     But first it is important to understand a small implementational detail. There is a distinction between the @ref orxonox::MultiTrigger "MultiTrigger" being triggered (there is the state <em>triggered</em> for that) and the @ref orxonox::MultiTrigger "MultiTrigger" being active (for that is the state <em>activity</em>). From the outside only the <em>activity</em> is visible (and has above been referred to as <em>triggered</em> for the sake of comprehensibility). The state <em>triggered</em> tells us whether the trigger is actually triggered, but it could pretend (for some reason, some of which we will see shortly) to be <em>triggered</em> to the outside, while it in fact isn't (but it would then be <em>active</em>). The standard behavior is, that the <em>activity</em> changes, when the @ref orxonox::MultiTrigger "MultiTrigger" transits from being triggered to not being triggered or the other way around. So to the inside a @ref orxonox::MultiTrigger "MultiTrigger" being <em>active</em> is synonymous to the @ref orxonox::MultiTrigger "MultiTrigger" being <em>triggered</em> to the outside.
     98    But first it is important to understand a small implementation detail. There is a distinction between the @ref orxonox::MultiTrigger "MultiTrigger" being triggered (there is the state <em>triggered</em> for that) and the @ref orxonox::MultiTrigger "MultiTrigger" being active (for that is the state <em>activity</em>). From the outside only the <em>activity</em> is visible. The state <em>triggered</em> tells us whether the trigger is actually triggered, but it could pretend (for some reason, some of which we will see shortly) to be <em>active</em> to the outside, while it in fact isn't. The standard behavior is, that the <em>activity</em> changes, when the @ref orxonox::MultiTrigger "MultiTrigger" transits from being <em>triggered</em> to being <em>not triggered</em> or the other way around.
    3699
    37100    The parameters of the @ref orxonox::MultiTrigger "MultiTrigger" are:
    38     - @b delay The delay is the time in seconds, that the trigger waits until it reacts (i.e. changes it's state) to the triggering condition being fulfilled. Internally this is handled by a state queue coupled with a counter, for each state that is delayed. The state becomes <em>active</em> when the counter runs out. This allows the @ref orxonox::MultiTrigger "MultiTrigger" to work even if the delay changes at runtime. However if the delay changes it only affects newly arriving states not the ones already in the queue. The default is <code>0</code>.
     101    - @b delay The delay is the time in seconds, that the trigger waits until it reacts (i.e. changes it's state) to the triggering condition being fulfilled. Internally this is handled by a state queue coupled with a counter, for each state that is delayed. The state becomes <em>active</em> when the counter runs out. This allows the @ref orxonox::MultiTrigger "MultiTrigger" to work even if the delay changes at runtime. However if the delay changes it only affects newly arriving states not the ones already in the queue. The default is <code>0.0</code>.
    39102    - @b switch Switch is a boolean, if <code>true</code> the @ref orxonox::MultiTrigger "MultiTrigger" is in <em>switch-mode</em>, meaning, that the <em>activity</em> changes only when the trigger is triggered, not when it is un-triggered (Just like a light switch does). This means, that in <em>switch-mode</em> the <em>activity</em> only changes, when the trigger changes from not being triggered to being triggered but not the other way around. The default is <code>false</code>.
    40103    - @b stayActive Stay active is also a boolean, if <code>true</code> the @ref orxonox::MultiTrigger "MultiTrigger" stays active after it has been activated as many times as specified by the parameter <em>activations</em>. In essence this means, that after the last time it is activated it cannot be deactivated. The default is <code>false</code>.
    … …  
    64127
    65128    @subsubsection DistanceMultiTrigger DistanceMultiTrigger
    66     A @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" is the MultiTrigger equivalent of the @ref orxonox::DistanceTrigger "DistanceTrigger" and works just the same way. It triggers (now separately for each object triggering it, since it's a @ref orxonox::MultiTrigger "MultiTrigger") whenever an object that is a target of the @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" is in the specified range.
     129    A @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" is the @ref orxonox::MultiTrigger "MultiTrigger" equivalent of the @ref orxonox::DistanceTrigger "DistanceTrigger" and works just the same way. It triggers (now separately for each object triggering it, since it's a @ref orxonox::MultiTrigger "MultiTrigger") whenever an object that is a target of the @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" is in the specified range.
    67130
    68     Two additional parameters can be specified for the @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" are the <em>distance</em>, which defines the maximum distance at which an object still triggers the @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger", and the <em>targetname</em>. Setting the <em>targename</em> puts the @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" in <em>single-target mode</em>. In this mode the @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger"  can only be triggered by objects that have a @ref orxonox::DistanceTriggerBeacon "DistanceTriggerBeacon" with the name specified by <em>targetname</em> directly attached. For the <em>single-target mode</em> to work the target of the @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" has to be set to <code>DistanceTriggerBeacon</code>.
     131    The target object can be specified further by setting the <em>beaconMode</em> and attaching a @ref orxonox::DistanceTriggerBeacon "DistanceTriggerBeacon" to the object.
     132    Parameters are (additional to the ones of @ref orxonox::MultiTrigger "MultiTrigger"):
     133    - @b distance Which specifies the maximum distance at which the @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" still triggers. Default is <code>100</code>.
     134    - @b beaconMode Which specifies, whether the @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" operates on @ref orxonox::DistanceTriggerBeacon "DistanceTriggerBeacons" or not. If <em>off</em> the @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" works as usual. If set to <em>identify</em> the @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" is only triggered by objects that have a @ref orxonox::DistanceTriggerBeacon "DistanceTriggerBeacon", with the same name as specified in <em>targetname</em>, attached to them. If set to <em>exclude</em> the @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" is only triggered by objects that don't have a @ref orxonox::DistanceTriggerBeacon "DistanceTriggerBeacon", with the same name as specified in <em>targetname</em>, attached to them. Default is <em>off</em>.
     135    - @b targetname Which specifies the name @ref orxonox::DistanceTriggerBeacon "DistanceTriggerBeacons" need to have to make the @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" react to them if it is in <em>beacon-mode</em> (the beaconMode is not <em>off</em>).
    69136
    70     A common usage (without @ref orxonox::DistanceTriggerBeacon "DistanceTriggerBeacon") would look like this:
     137    A simple @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" could look like this:
    71138    @code
    72     <DistanceMultiTrigger position="0,0,0" switch="true" target="Pawn" distance="20" />
     139    <@ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" position="0,0,0" switch="true" target="Pawn" distance="20" />
    73140    @endcode
    74141
    75     With @ref orxonox::DistanceTriggerBeacon "DistanceTriggerBeacon" it would look like this:
     142    An implementation that only reacts to objects with a @ref orxonox::DistanceTriggerBeacon "DistanceTriggerBeacon" attached would look like this:
    76143    @code
    77     <DistanceMultiTrigger position="0,0,0" target="DistanceMultiTrigger" targetname="beacon1" distance="30" />
     144    <@ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" position="0,0,0" target="Pawn" beaconMode="identify" targetname="beacon1" distance="30" />
    78145    @endcode
     146    This particular @ref orxonox::DistanceMultiTrigger "DistanceMultiTrigger" would only react if an object was in range, that had a @ref orxonox::DistanceTriggerBeacon "DistanceTriggerBeacon" with the name <em>beacon1</em> attached.
    79147*/
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