Re-using triggers

[rogueteddybear]

How can you reuse a trigger on the same unit?

For example if i have trigger1 and I register it using TriggerRegisterUnitInRange(trigger1, unit1 ...), then it will execute when a unit2 walks within range of unit1. However this stops triggering for unit 2 after the first time. In order for it to trigger again for unit2, he has to get out-of-range of unit1, then come back into range. I would like it to continuously trigger for unit 2 as long as he is in range of unit1. I don't want to use enums, I was just wondering if this is possible with just the trigger.

Also what does ResetTrigger() do exactly?

And what is the difference between TriggerEvaluate() and TriggerExecute()?

 

[ikillforeyou]

Idk what resettrigger does, however, triggerevaluate checks the conditions then runs, triggerexecute just runs the actions of the trigger.

why don't you do a periodic event or timer and then check if (position of unit1) is is within range of unit 2

 

[rogueteddybear]

Yes I considered that, but I would have to do this for every unit that triggers the event, so it would be like iterating over these units twice, once in the event (behind the scenes) and again in a loop. This I wanted to avoid.

Edit: while we are on the topic, If I re-register a trigger without destroying/recreating it, do I cause a leak? Like If I called TriggerRegisterUnitInRange() twice on the same trigger.

 

[Mac_MacNuggets]

Is it like a spell that damages units near it like immolation? What you do is create a trigger that adds unit 2 to a unit group when it goes near unit 1.

Then you need another trigger that has a periodic time event that picks all the units in the group and damages them or something.

Finally you need a trigger that removes unit 2 from the group when he dies or moves out of unit 1 range.

 

[Maker]

TriggerRegisterUnitInRange triggers when the unit becomes withing the range, so you can't use it for checking whether the unit is still in range or not.

Use the periodic distance checking method that ikillforeyou suggested.