View source for Lever, switch, 2-way target sets

''written by Fidcal''


==Introduction==

Here is a way to make one lever trigger different targets depending which way it is thrown. it would also work with any switch or say a door so you get a different effect when it is opens to when it closes.


==Summary==

The method works by relaying the lever's triggering through two counters which are put out of sync by another temporary counter.


==How to set up the lever==

* Create three trigger_count entities, C1, C2, and C3.
* Both C1 & C2 you give the property/value: repeat 1 but C3 you give repeat 0
* Both C1 & C2 you give the property/value: count 2 but C3 you give count 1
* C1 targets one set of targets (say Light 1 in a test)
* C2 targets the other set of targets (say Light 2 in a test)
* C3 targets C2
* 1 lever targets all 3 trigger_count entities, C!, C2, & C3


==The resulting effect of the lever setup==

Imagine a setup with two test lights, Light 1 and 2.

But either light could instead be any number of different targets.


You push the lever forward.

Light 2 toggles on/off but Light 1 is unaffected.


You pull the lever back.

Light 1 toggles on/off but Light 2 is unaffected.

... and so on. Only one target (or set of targets) is affected when you push the lever forward. A different target is affected when you pull the lever back.


==Explanation==

You don't need to read this to get it to work. You only need to know [[#How to set up the lever]]

trigger_count entities count down from their count value but don't relay the trigger on to their own target(s) until the count reaches zero.

If the trigger_count entity also has repeat 1 set then after reaching zero and triggering its target(s) it resets the count value back to the original spawnarg value. But if repeat was 0 then it only triggers its target(s) once then does nothing further (a bit like trigger_once except after a count.)


'''This is what happens in detail:'''

You push the lever forward:
* It decrements counter 1 from 2 to 1
* It decrements counter 2 from 2 to 1
* It decrements counter 3 from 1 to 0
* Counter 3 has reached 0 so it triggers counter 2
* This puts counter 2 out of sync with counter 1
* Counter 3 has repeat 0 so is not used again
* So counter 2 has been decremented from 1 to 0 
* So Counter 2 toggles Light 2 on/off
* Counter 2 has repeat 1 so it resets count to 2
* Net result when lever pushed forward is that Light 2 is toggled on or off but Light 1 is unaffected.

You pull the lever back:
* It decrements counter 2 from 2 to 1
* It decrements counter 1 from 1 to 0
* So Counter 1 toggles Light 1 on/off
* Counter 1 has repeat 1 so it resets count to 2
* Net result when lever pulled back is that Light 1 is toggled on or off but Light 2 is unaffected.

You push the lever forward:
* It decrements counter 1 from 2 to 1
* It decrements counter 2 from 1 to 0
* So Counter 2 toggles Light 2 on/off
* Counter 2 has repeat 1 so it resets count to 2
* Net result when lever pushed forward is that Light 2 is toggled on or off but Light 1 is unaffected.

and repeats. Each throw of the lever only one light is affected. This could of course be any number of different targets on each of counters 1 and 2.


[[Category:Editing]]