Trying to write a party onTurn hook

[philippe.martin]

Hi There,

I'm quite new on LoG2 scripting. For one of my puzzle I'd like to test wether my party has turned using the onTurn Party hook.

After reading this excellent topic viewtopic.php?f=14&t=5803&hilit=+hook, I try doing the same in my LoG2 dungeon editor.

I was following the 3 steps, apart the third step which I adapt to LoG2 like described here : viewtopic.php?f=22&t=7642

The code in my party_hooks.lua file is (actually I only need onTurn hook) :

Code: Select all

defineObject{
   name = "party",
   baseObject = "party",
   components = {
		{
        class = "Party",
		onTurn = function(party,dir,arg1) 
			--print(party.go.id,"turning to",dir)
			return hooks.party_onTurn(party, dir)
		end
		}
	},
}

In my dungeon editor I create an lua script named 'hooks' containing :

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function party_onTurn(party, dir)
	print (dir)
end

Until here all is OK, dungeon is starting correctly. When my party is turning on the following occurs:

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mod_assets/scripts/party_hooks.lua:9: attempt to call field 'party_onTurn' (a nil value)
stack traceback:
mod_assets/scripts/party_hooks.lua:9: in function <mod_assets/scripts/party_hooks.lua:7>
...

I don't see my mistake, could someone light my way ? Any help would be appreciate.

N.B. Calling print(hooks) into onTurn function (insteed of print(party.go.id,"turning to",dir) ) returns a table...

[Xanathar]

Code: Select all

return hooks.script.party_onTurn(party, dir)

basically: "hooks" refers to the GameObject, not the script component, you want to reference the script component, thus "hooks.script"

[philippe.martin]

That does the trick !

A warm thank you to this quick reply !

[minmay]

For one of my puzzle I'd like to test wether my party has turned using the onTurn Party hook.

You need to be careful about this because players can also turn using free-look, which does not call the onTurn hook.

[philippe.martin]

For one of my puzzle I'd like to test wether my party has turned using the onTurn Party hook.

You need to be careful about this because players can also turn using free-look, which does not call the onTurn hook.

Right ! Again thank you for the tips !

Is there a way to catch party free-look ?

[minmay]

During free-look, you can inspect the party's transformation matrix with party:getWorldRotation() and calculate the camera angle from that. If you only need to catch the actual act of turning, which only occurs once the mouse is actually released, simply check party.facing on every update (easy way to do this: put a TimerComponent on the party with an interval of 0.0001, timers can only trigger exactly once per update so the timer's onActivate hook will be called exactly once per update; it does NOT activate 10000 times per second, so don't worry about performance).

There is also a DisableMouseLook game flag, but shutting off a basic interface feature is a pretty terrible thing to do for a puzzle, so please don't do that.

[philippe.martin]

During free-look, you can inspect the party's transformation matrix with party:getWorldRotation() and calculate the camera angle from that. If you only need to catch the actual act of turning, which only occurs once the mouse is actually released, simply check party.facing on every update (easy way to do this: put a TimerComponent on the party with an interval of 0.0001, timers can only trigger exactly once per update so the timer's onActivate hook will be called exactly once per update; it does NOT activate 10000 times per second, so don't worry about performance).

There is also a DisableMouseLook game flag, but shutting off a basic interface feature is a pretty terrible thing to do for a puzzle, so please don't do that.

Yes ! Working perfect !

Thanks again !