Reverse Backstab

[Black-Templar]

How would I make a trigger that causes a hero (after learning a custom skill) to only take damage when attacked from the back?

 

[Diablo-dk]

That would take a lot of Jass triggers to work, and a good attack detection system(which isnt easy to get a 100% accurate one).

 

[Xarwin]

Hell no, jass isn't necessary here.
I guess u mean a backstab trigger.

• Backstab
  • Events
    • Unit - A unit Is attacked
  • Conditions
    • (Level of CUSTOMSPELL for (Attacking unit)) Greater than 0
    • Or - Any (Conditions) are true
      • Conditions
        • (Angle from (Position of (Attacking unit)) to (Position of (Attacked unit))) Greater than or equal to ((Facing of (Attacked unit)) - 160.00)
        • (Angle from (Position of (Attacking unit)) to (Position of (Attacked unit))) Less than or equal to ((Facing of (Attacked unit)) - 200.00)
  • Actions
    • Unit - Cause (Attacking unit) to damage (Attacked unit), dealing ((1.00 x (Real((Level of CUSTOMSPELL for (Attacking unit))))) x (Real((Agility of (Attacking unit) (Include bonuses))))) damage of attack type Normal and damage type Normal

Edit it to your choise.

This trigger is not 100% perfect working, since the attack detection is wrong, but that is normal.

 

[Diablo-dk]

he said cause it NOT to take damage when infront of the target.
by the way dont use that trigger anyways...it leaks 4 locations, and i also think that those conditions wont work, u will have to use angle calculations...

 

[-JonNny]

You cannot use " Unit - A unit Is attacked" because you wont be able to get the damage (at the moment the unit attacks no damage is dealt )
I think the easiest way of creating this is adding a event with your hero to another trigger (may when learning the spell) " call TriggerRegisterUnitEvent( <trigger> , <unit>, EVENT_UNIT_DAMAGED )"
Then to get the Angle difference you could use this function (copy into mapscript):

function AngleDifference takes real angle1, real angle2 returns real
 local real x
    set angle1=ModuloReal(angle1,360)
    set angle2=ModuloReal(angle2,360)
    if angle1>angle2 then
        set x=angle1
        set angle1=angle2
        set angle2=x
    endif
    set x=angle2-360
    if angle2-angle1 > angle1-x then
        set angle2=x
    endif
 return RAbsBJ(angle1-angle2)
endfunction

Then in the Trigger with the added event ( No event in the editor!) You could get the angle difference and if it has the difference u want do this :

    call SetUnitLifeBJ( GetTriggerUnit(), ( GetUnitStateSwap(UNIT_STATE_LIFE, GetTriggerUnit()) + GetEventDamage() ) )

I hope this helps

 

[Xarwin]

@ Diablo-Dk
-> Edit it to your choise.
It just might help him/give him idea's.
@-JonNy
This trigger is not 100% perfect working, since the attack detection is wrong, but that is normal.
Well he might be helped also with your script now.