[Trigger] How to prevent unit from damaging itself when using "make unit damage area" function?

[oxxo]

title pretty much says it all. is there a way to make the "damage area" trigger filter specific player-owned-units, races, unit-types or similar stuff?

thx in advance

 

[Razorbrain]

Pick every unit within a point and deal damage to target to everyone in the group? that way, you can choose what units you want to target when you make the group

 

[Captain Griffen]

Don't use damage area. It sucks, desyncs, etc.

 

[oxxo]

what would you suggest captain griffen? what are desyncs? im a jass noob =(

 

[Captain Griffen]

Pick every unit within a point and deal damage to target to everyone in the group? that way, you can choose what units you want to target when you make the group

For desyncs, search is your friend.

 

[Lord_BoNes]

Desyncs, is what you call it when a player is forcefully disconnected from the game due to their Wc3 being out of "sync" with the host's Wc3.

Razorbrain gave you a valid solution.
Here's my one:

function Filter_AlwaysTrue takes nothing returns boolean
    return true
endfunction

function DistanceBetweenPointsXY takes real x, real y, real targ_x, real targ_y returns real
    local real dx = targ_x - x
    local real dy = targ_y - y
    return SquareRoot(dx * dx + dy * dy)
endfunction

function DamageArea takes unit attacker, real x, real y, real radius, real damage, real self, real friend, attacktype a_type, damagetype d_type returns nothing
    local group ug = CreateGroup()
    local unit u
    local player player_owner = GetOwningPlayer(attacker)

    local real damage_percent
    local real dist

    local real targ_x
    local real targ_y

    call GroupEnumUnitsInRange(ug, x, y, radius, Condition(function Filter_AlwaysTrue))

    loop
        set u = FirstOfGroup(ug)
        exitwhen u == null

        if (attacker == u) then
            if (self > 0) then
                // Reaction to Self
                set targ_x = GetUnitX(u)
                set targ_y = GetUnitY(u)
                set dist = DistanceBetweenPointsXY(x,y,targ_x,targ_y)
                if (dist < 1) then
                    set damage_percent = damage
                else
                    set damage_percent = (dist / radius) * damage
                endif
                call UnitDamageTarget(attacker, u, damage_percent * self, true, true, a_type, d_type, WEAPON_TYPE_WHOKNOWS)
            endif
        elseif (IsUnitEnemy(u, player_owner)) then
        // Reaction to Enemies
            set targ_x = GetUnitX(u)
            set targ_y = GetUnitY(u)
            set dist = DistanceBetweenPointsXY(x,y,targ_x,targ_y)
            if (dist < 1) then
                set damage_percent = damage
            else
                set damage_percent = (dist / radius) * damage
            endif
            call UnitDamageTarget(attacker, u, damage_percent, true, true, a_type, d_type, WEAPON_TYPE_WHOKNOWS)
        elseif (friend > 0) then
        // Reaction to Friendlies
            set targ_x = GetUnitX(u)
            set targ_y = GetUnitY(u)
            set dist = DistanceBetweenPointsXY(x,y,targ_x,targ_y)
            if (dist < 1) then
                set damage_percent = damage
            else
                set damage_percent = (dist / radius) * damage
            endif
            call UnitDamageTarget(attacker, u, damage_percent * friend, true, true, a_type, d_type, WEAPON_TYPE_WHOKNOWS)
        endif

        call GroupRemoveUnit(ug, u)
        set u = null
    endloop

    set player_owner = null

    call DestroyGroup(ug)
    set ug = null
endfunction

This function allows you to define how much damage (factor of 0-1) that friendlies (or yourself) get. It also damages less the further away from the center that each target is... I can create another one that does 100% damage to any targets within the radius, just ask me and I do it.

As far as I can tell, it is 100% leak free...
Hope this is what you're after.