[JASS] Differences Between DestroyGroup and ClearGroup

[scorpion182]

What're differences between DestroyGroup and ClearGroup?

 

[-Berz-]

I think clearing group is that you remove units and than you can add new units/or something to it.

Destroying it, destroys it and you must create a new group again if you want to do with the group something again.

 

[scorpion182]

I think clearing group is that you remove units and than you can add new units/or something to it.

Destroying it, destroys it and you must create a new group again if you want to do with the group something again.

thanks i have problem with "FirstofGroup", it always return same unit everytime, i want to get a random unit from a unit group, do you have a solution

 

[-Berz-]

I can tell you for GUI, i'm noob at Jass D:

Edit:
I think this spell contains unit groups/random unit..dunno check it, i made it some time a go and i forget..
View attachment Berserkers Rage[cinematic].w3x

 

[Eleandor]

There's a BJ function:

function GroupPickRandomUnit takes group whichGroup returns unit

But you could just as easily simulate a random unit by doing the following:

function sth takes group g returns nothing
    local integer rnd = GetRandomInt(1, CountUnitsInGroup(g)
    local unit u
    loop
        set u = FirstOfGroup(g)
        exitwhen rnd == 1
        call GroupRemoveUnit(g, u)
        set rnd = rnd - 1
    endloop
    call KillUnit(u) // u is now a random unit from the group.
endfunction

 

[scorpion182]

There's a BJ function:

function GroupPickRandomUnit takes group whichGroup returns unit

But you could just as easily simulate a random unit by doing the following:

function sth takes group g returns nothing
    local integer rnd = GetRandomInt(1, CountUnitsInGroup(g)
    local unit u
    loop
        set u = FirstOfGroup(g)
        exitwhen rnd == 1
        call GroupRemoveUnit(g, u)
        set rnd = rnd - 1
    endloop
    call KillUnit(u) // u is now a random unit from the group.
endfunction

erm i avoid using the BJs thing

 

[GhostWolf]

That function will also clear the group, not only give a random unit.
And I just looked at Blizzard's function and it isn't bad.

 

[scorpion182]

if i used BJs, i can use "GroupPickRandomUnit"

 

[GhostWolf]

First of all, it isn't a BJ. And second thing - I think you didn't get WHY you normally wouldn't want to use a BJ function. It's not because we are racists towards the letters B and J. It's because most of them are useless. If a function isn't useless, it doesn't freaking matter if there is a BJ stuck in it's name (and like I mentioned this isn't even a BJ function).

 

[Eleandor]

It's a BJ. Perhaps it doesn't contain "BJ" in the function name, but it is:
- not a native
- in Blizzard.j, not in Common.j. Since BJ comes from Blizzard Jass, it's pretty obvious any function from Blizzard.j is ... a BJ function.

 

[GhostWolf]

It's from blizzard.j? Fine then, it's a BJ. But the rest of my comment still applies.

 

[Soga-]

thanks i have problem with "FirstofGroup", it always return same unit everytime, i want to get a random unit from a unit group, do you have a solution

When iterating through a group using FirstOfGroup, you would do this:

function foo takes nothing returns nothing
	local group temp=CreateGroup()
	local unit nextUnit
	call GroupAddGroup(groupYouWantToIterateThrough, temp)
	loop
		set nextUnit=FirstOfGroup(temp)
		exitwhen nextUnit==null
		// Do your actions for each unit here....
		call GroupRemoveUnit(temp, nextUnit)
	endloop
	call DestroyGroup(temp)
	set nextUnit=null
	set temp=null
endfunction

That's the inline way to, anyway, without using Enum functions.

 

[Yixx]

I might be a little off-topic:
But why doesnt my WE take: call ClearGroup(udg_Variable) ?
I made a line of custom script and put that in it (with other variable name) And it keeps saying: 'function name expected'

 

[RolePlaynGamer]

Yixx, it's GroupClear. =P

 

[Yixx]

Whoops!

Dont blaim me! Im only GUI-user!=P

P.S. Click Grollo plz

 

[Eleandor]

If you're a gui user, use

• Unit Group - Remove all units from (Last created unit group)