Custom Scripts

[fhar143]

I'm just wondering what does it do??? or how can i code it to my map..

all the triggers you are posting have this "Custom Scripts" . .

but i don't know anything about it.. XD

 

[XeNiM666]

Custom Scripts are things that let you put JASS in GUI. Usually used for fixing leaks.

 

[Komaqtion]

Read this tutorial and you should get the basic idea bout it
http://www.thehelper.net/forums/showthread.php?t=27219

 

[SaMmM]

One of the very useful custom scripts is:

local unit udg_u

Great for triggering simple MUI spells.
It makes a local variable out of your user-defined-global variable, it will not conflict with other triggers that use the same variable. Can be used in triggers that has wait actions.

Of course you also have to null it after using it:
set udg_u = null

 

[Angel_Island]

One of the very useful custom scripts is:
Of course you also have to null it after using it:
set udg_u = null

That is not need with integer or real values, is it?

 

[Komaqtion]

nope

 

[Tom Jones]

That is not need with integer or real values, is it?

You don't need to null integers, reals, strings, booleans, and static handles (Such as players).

 

[Tyrulan]

One of the very useful custom scripts is:

local unit udg_u

Great for triggering simple MUI spells.
It makes a local variable out of your user-defined-global variable, it will not conflict with other triggers that use the same variable. Can be used in triggers that has wait actions.

Of course you also have to null it after using it:
set udg_u = null

Why would you use "udg_" for a local unit? That kind of defeats the purpose of the convention does it not? Declaring a local unit with global syntax FTL. >.<

(udG_ stand for "User Defined Global")

 

[Komaqtion]

That's just so you can use it with GUI triggers, it's a "Global Local" XD

 

[Tyrulan]

Haha alright then, I don't know since I program in Jass anyway I don't have to deal with that. Seems illogical. I suppose it is more or less like the syntax:

globals
     local unit u
endglobals

If anyone can confirm that.

 

[Komaqtion]

Yepp, it's almost exactly like that, though in GUI

 

[T.s.e]

Except for the fact that this:

globals
     local unit u
endglobals

Gives a syntax error.

 

[SaMmM]

(udG_ stand for "User Defined Global")

Thanks for telling me, but I said that in my post. xD

Haha alright then, I don't know since I program in Jass anyway I don't have to deal with that. Seems illogical. I suppose it is more or less like the syntax:

globals
     local unit u
endglobals

If anyone can confirm that.

Because the topic starter asked for custom scripts for gui triggers.

In gui created maps, udg are already defined by the variable editor.

udg_unit or udg_u is a commonly used variable in gui triggers.

So using local unit or local udg_unit is the same, and does not matter because you will most probably have a udg_unit in gui triggered maps.

If anyone can confirm that too.

 

[fhar143]

Butwhat if i don't use Jass for my GUI?? do i still need them??

 

[darkreapers]

Butwhat if i don't use Jass for my GUI?? do i still need them??

yes, u do, they can be used to destory temp variables u used in a trigger or ur trigger wont work when ur character moves out of position, say if u have a temp variable that sets the location as near the hero. if ur hero moves to another spot and u cast the same spell, the effect would be all messed up. thats why u use custom script to remove the location.

 

[fhar143]

oh.. ok i understand now...

for example a trigger for swap, after the effect i have to remove it to avoid memory leaks??? how can i code it??

i tried custom scripts but no options are available.. i think i am the one to code it.

 

[Dinowc]

use x,y coordinates instead of locations

not only that it doesn't require to be removed (it wont leak), but it's also faster

a location is a *BJ actually that converts x,y coordinates to location in a very retarded way...

example of a GetUnitLocBJ() function (aka "Position of unit"):

function GetUnitLocBJ takes unit u returns location
      local real x = GetUnitX(u)
      local real y = GetUnitY(u)
      return Location(x,y)
endfunction

see? makes no sense...

so in your case (for swap) just use this:

local real x1 = GetUnitX(caster) //let's assume "caster" is triggering unit
local real y1 = GetUnitY(caster)

local real x2 = GetUnitX(target) //and "target" is target unit of ability being cast
local real y2 = GetUnitY(target)

call SetUnitPosition(caster, x2,y2)
call SetUnitPosition(target, x1,y1)

//it's also recommended to null unit variables since they are local ones and it will leak otherwise

and there you go

ofc you can do it the same way in GUI



______________________
*BJ - blizzard's premade functions, blizz created them mostly for GUI users and Jass beginners, although they seem simple, they aren't actually, all they do is point to a native function that does the actual job