conditional actions - discussion

[Damago]

I think it could be good to discuss separately the way of implementing conditional actions.

As Jean-François did write in one of the topics:
The only thing I still see in my todo list is a simple way to compare object values without having to use LUA. But I'm still not sure what's the best way to do it, because if I just implement value comparison, one day somebody will ask if he can specify an offset, or want to add a multiplication factor to one of the values, or a combination of 3 values, or…. You know how good people can be at finding new needs. ;-)

My suggestion is to make it similarly to repeat list. Maybe the "repeat-list" could be abbreviated to "repeat">

 <action type="repeat-list" period="2" count="3">
                    <action type="toggle-value" id="door_light"/>
</action>

To open discussion I would suggest some solutions:

1) if the code for conditions can be re-used for condition evaluation, than It would be possible to make it re-using the whole condition syntax excluding the timer, and trigger:

 <action type="conditional">
                    <condition   (whatever here)/> 
                    <actionlist>
                        <action type="toggle-value" id="door_light"/>
                        <action type="toggle-value" id="door_light" delay="200ms"/>
                   <actionlist>
</action>

2) Another possibility is to add a separate tag <if> with condition attribute

<actionlist>
          <if id="lamp1" condition="equal" value="on">
                   <action ..../>
          </if>
          <if id="lamp2" condition="equal" object="lamp3">
                   <action type="toggle-value" id="door_light" />
          </if>
</actionlist>

3) another possiblity is to add specific <ifxxxx> tags:

<ifequal id1="xxxx" id2="yyyy">
<ifdifferent id1="xxxx" id2="yyyy">
<ifvalue id="xxxx" value="yyyy">
<ifnotvalue id="xxxx" value="yyyy">

Which might be easiest to implement.

4) fourth solution

<action type="if-equal" id1="xxx" id2="xxx">
      <action ...>
</action>
<action type="if-value" id="xxx" value="xxx">.....</action>
<action type="if-not-equal" id1="xxx" value="xxx"></action>

Which might be quite similiar.

This is only an open brainstorming session.

Yours
Damago1

[Damago]

After some thoughts about it I have slightly better idea:

<actionlist>
    <actionlist type="if-equal" id1="xxx" id2="yyy">
        <action ...... >
        <action ...... >
    </actionlist>
    <actionlist type="if-value" id="xxx" value="on">
        <action ....>
    </actionlist>
    <actionlist type="repeat" count="2" period="200ms">
         <action ....>
    </actionlist>
</actionlist>
<actionlist type="if-false">
    <action ....>
    <action ....>
</action>