Feature Request: Trigger: On variable value change

I'm sure there a work-around for what I have in mind, but is it possible to add a trigger that checks for the moment the value of a variable changes?

For instance, in my stealth game, I may have my enemy chasing me. I have a variable that states "Is enemy chasing player?" - True.

But there are times before and after where both are False. I want to test the moment the pursuit is lost.

The reason in my example is because before pursuit, the chase condition is false, but I don't want the follow-up actions to take place BEFORE the chase has even started. I need a test that says THE MOMENT WHEN the value changes and pursuit has been lost.

Does this seem like a viable option to add? Thanks. :)

+1

We probably won't add this. The performance overhead of running a trigger is fairly small, but variables are used and changed so much in projects I'm sure a feature like this would drag down performance. And the workaround is simple: either use a static local variable, e.g.

[Static local number OldValue = 0]

+ Myvalue != OldValue

-> Set OldValue to MyValue

-> Do something else

Or instead of setting the variable directly, call a function, which does additional work as well as setting the variable.

Jase00 - :) Thanks for the vote!

Ashley - I suppose I can see that (barely, as I don't have the programming expertise like you do...but I understand).

The work-around, though, I think will fit what I have in mind perfectly. I know of the !=...er, whatever you call that instruction (I can't remember), but I'm not used to using it. Thank you. :)

Jase00 - :) Thanks for the vote!

Sure thing! <img src="smileys/smiley20.gif" border="0" align="middle" />

We probably won't add this. The performance overhead of running a trigger is fairly small, but variables are used and changed so much in projects I'm sure a feature like this would drag down performance. And the workaround is simple: either use a static local variable, e.g.

[Static local number OldValue = 0]

+ Myvalue != OldValue

-> Set OldValue to MyValue

-> Do something else

Or instead of setting the variable directly, call a function, which does additional work as well as setting the variable.

Ah I see, I thought it would boost performance in some places but yeah it would bog down the performance since variables change all the time. The more you know!

just in case there's anyone still interested.

On instance variable change plugin