[LUA] Are using Trigger Conditions or if statements faster in Lua?

[Kick King]

So, I'm working on changing my map over to Lua and had a performance question about triggers.

Say I have 5 GUI triggers "Unit starts the Effect of an Ability" each having a separate condition and in Lua I'm thinking it would be easier if I have 1 trigger created for that event, and then in the Actions that are added, I add functions for each use that would resolve conditions inside the function.

Something like this:

    local t = CreateTrigger()
    TriggerRegisterAnyUnitEventBJ(t, EVENT_PLAYER_UNIT_SPELL_CAST)
    TriggerAddAction(
        t,
        function()
            spell1()
            spell2()
            spell3()
            spell4()
        end
    )

Does that make sense? Wondering from a performance perspective if that would be something that would be as fast as doing it the traditional TriggerAddCondition way.

 

[jonhysone]

I don't think there is any noticeable performance margin. It should be fine either way.

 

[_Guhun_]

If you want the fastest performance possible, everything should be a triggercondition, since those are faster then actions. Having an action + a condition will always be slower than having just one of them and checking conditions using if blocks, since you are starting two threads when you have both and action and a condition.

You'll be hard-pressed to find a practical scenario where there will be a noticeable difference in-game.

For things like triggered abilties where the only condition is "GetTriggerAbilityId() == your_id" the best thing you can do is to have 1 single trigger, and then a table that maps an ability id to a function. Then when that trigger is executed, execute the function in the table that is stored in the key of the ability that was cast:

"ability_handler_functions[your_id]()"

 

[Kick King]

Ooh, I like that idea of setting up the function handlers based on an ID. Smart. Interesting thought about running the action in the conditional. So far I've been doing the opposite and just running the conditions as if statements in the actions.