Shooting trigger, need help.. =[

[Tiku]

Im trying to make a Trigger that makes a unit shoot a bullet at an area, and if the bullet collides into a unit then the bullet will disapear and deal damage, like on Elimination Tournament, well this is my first attempt, it works creating the bullet and ordering it, but it doesnt collide into people or deal damage...

Heres the code:

JASS:

function Trig_Shoot_Conditions takes nothing returns boolean
    return ( GetSpellAbilityId() == 'A000' )
endfunction

function Trig_Shoot_Actions takes nothing returns nothing
    local unit uu     = GetTriggerUnit()
    local player u    = GetOwningPlayer( uu )
    local real spawnx = GetLocationX(PolarProjectionBJ(GetUnitLoc(uu), 20.0, GetUnitFacing(uu)))
    local real spawny = GetLocationY(PolarProjectionBJ(GetUnitLoc(uu), 20.0, GetUnitFacing(uu)))
    local real gotox  = GetLocationX(GetSpellTargetLoc())
    local real gotoy  = GetLocationY(GetSpellTargetLoc())
    local real bulletx
    local real bullety
    local real bulletloc
    local real gotoloc
    local unit targ 
    set udg_bullet = CreateUnit( u, 'h001', spawnx, spawny, GetUnitFacing(uu))
    call IssuePointOrder( udg_bullet, "move", gotox, gotoy ) 
    //=====
    loop 
    exitwhen bulletloc == gotoloc + 1.0
    set udg_collision = GetUnitsInRangeOfLocAll( 20.0, GetUnitLoc(udg_bullet) )
    set targ = GroupPickRandomUnit(udg_collision)
    if bulletloc == gotoloc then
    call RemoveUnit( udg_bullet )
    endif
    if ( CountUnitsInGroup(udg_collision) >= 1 ) then
    call UnitDamageTarget( uu, targ, 500.0, false, true, ATTACK_TYPE_PIERCE, DAMAGE_TYPE_NORMAL, WEAPON_TYPE_WHOKNOWS )
    call RemoveUnit(udg_bullet)
    endif  
    set bulletx = GetUnitX( udg_bullet )
    set bullety = GetUnitY( udg_bullet )
    set bulletloc = (bulletx + bullety)
    endloop
    set uu     = null
    set u    = null
    set targ = null
    set udg_bullet = null
    set udg_collision = null
endfunction

//===========================================================================
function InitTrig_Shoot takes nothing returns nothing
    set gg_trg_Shoot = CreateTrigger(  )
    call TriggerRegisterAnyUnitEventBJ( gg_trg_Shoot, EVENT_PLAYER_UNIT_SPELL_EFFECT )
    call TriggerAddCondition( gg_trg_Shoot, Condition( function Trig_Shoot_Conditions ) )
    call TriggerAddAction( gg_trg_Shoot, function Trig_Shoot_Actions )
endfunction

If you could help id appreciate it.. =]

[1337D00D]

You should make it slide forward instead of issuing it an order.

And if you want a premade bullet system, use iNfraNe's particle system. That's the system used in Elimination Tournament.