Backstab System

02-12-2007, 01:10 PM

Trying to create a backstab evaluation... my thought was, evaluate the orientation of attacking and attacked player, and if they are plus minus X amount, then it's a backstab, so add damage or whatever. Is there a better way?

Trigger:

backstab

Events

Unit - A unit Is attacked

Conditions

skillAssassin[(Player number of (Owner of (Attacking unit)))] Equal to True

Actions

Set unitOrient[(Player number of (Triggering player))] = 0

If (All Conditions are True) then do (Then Actions) else do (Else Actions)

If - Conditions

Then - Actions

Else - Actions

but i don't know how to capture the unit's orientation. :(

02-12-2007, 01:47 PM	#2
emjlr3	getunitfacing?

02-12-2007, 02:36 PM

The)TideHunter(

You need to get the facing of the attacked unit, the facing of the attacking unit and compare.

Look:

Code:

           X
           Y

X is facing 0, Y is facing 0.
So try this:

Trigger:

Actions

Set AttackedFacing = (Facing of (Attacked unit))

Set AttackerFacing = (Facing of (Attacking unit))

If (All Conditions are True) then do (Then Actions) else do (Else Actions)

If - Conditions

And - All (Conditions) are true

Conditions

AttackerFacing Greater than or equal to (AttackedFacing - 60.00)

AttackerFacing Less than or equal to (AttackedFacing + 60.00)

Then - Actions

Backstab Actions

Else - Actions

I think that will work anyway.

BTW: the 60 is the minium and maxium angle it can be at, because think about it, its not going to be perfectly facing it, so give it some ease, if you set them both to 180, then it would count backstab as every direction, the lower that number the smaller the gap to backstab.

02-12-2007, 02:50 PM	#4
Fireeye	Tide don't it have to be an and-condition? in this case it will always fire when you use an or-condition.

02-12-2007, 02:59 PM

The)TideHunter(

Quote:

Originally Posted by Fireeye

Tide don't it have to be an and-condition? in this case it will always fire when you use an or-condition.

Yes your right, i'll change it.

02-12-2007, 03:02 PM	#6
notor	sounds good but where are you getting facing? i can't find it... is it because of my variable? i made it an integer... maybe it needs to be something else?

02-12-2007, 03:23 PM

Vexorian

Tide's solution does not really work because angles are cyclic and all that stuff

You are probably going to use one of these:

JASS:

    function Angles_IsAngleBetweenAngles takes real angle, real angle1, real angle2 returns boolean
     local real x
        set angle=ModuloReal(angle,360)
        set angle1=ModuloReal(angle1,360)
        set angle2=ModuloReal(angle2,360)
        if (angle1>angle2) then
            set x=angle1
            set angle1=angle2
            set angle2=x
        endif
        if (angle2-angle1)>(angle1 - (angle2-360)) then
            set angle2=angle2-360
            if angle > 180 then
                set angle=angle-360
            endif
            return angle>=angle2 and angle<=angle1
        endif
     return (angle>=angle1) and (angle<=angle2)
    endfunction

JASS:

    function Angles_GetAngleDifference takes real a1, real a2 returns real
     local real x
        set a1=ModuloReal(a1,360)
        set a2=ModuloReal(a2,360)
        if a1>a2 then
            set x=a1
            set a1=a2
            set a2=x
        endif
        set x=a2-360
        if a2-a1 > a1-x then
            set a2=x
        endif
        set x=a1-a2
        if (x<0) then
            return -x
        endif
     return x
    endfunction

You can complicate your life and remake the arithmetic in GUI if you are so attached to it.

02-12-2007, 04:55 PM

The)TideHunter(

Quote:

Originally Posted by Vexorian

Tide's solution does not really work because angles are cyclic and all that stuff

You are probably going to use one of these:

JASS:

    function Angles_IsAngleBetweenAngles takes real angle, real angle1, real angle2 returns boolean
     local real x
        set angle=ModuloReal(angle,360)
        set angle1=ModuloReal(angle1,360)
        set angle2=ModuloReal(angle2,360)
        if (angle1>angle2) then
            set x=angle1
            set angle1=angle2
            set angle2=x
        endif
        if (angle2-angle1)>(angle1 - (angle2-360)) then
            set angle2=angle2-360
            if angle > 180 then
                set angle=angle-360
            endif
            return angle>=angle2 and angle<=angle1
        endif
     return (angle>=angle1) and (angle<=angle2)
    endfunction

JASS:

    function Angles_GetAngleDifference takes real a1, real a2 returns real
     local real x
        set a1=ModuloReal(a1,360)
        set a2=ModuloReal(a2,360)
        if a1>a2 then
            set x=a1
            set a1=a2
            set a2=x
        endif
        set x=a2-360
        if a2-a1 > a1-x then
            set a2=x
        endif
        set x=a1-a2
        if (x<0) then
            return -x
        endif
     return x
    endfunction

You can complicate your life and remake the arithmetic in GUI if you are so attached to it.

Damn yeah, i remember being corrected by Infrane, somebody asked for this very answer and i gave the same answer as i did in this thread, and you are in Infrane's place in the thread. Deja vu lol.

02-12-2007, 08:31 PM	#9
Joker	can someone explain the ModuloReal/Int? I dont quite get it.

02-12-2007, 08:35 PM	#10
Vexorian	Modulo is remainder; 7 mod 3 = 1 ;( ModuloInteger(7,3)==1) , 7 = 3*2 + 1

02-12-2007, 08:44 PM	#11
CommanderZ	http://en.wikipedia.org/wiki/Modulo_operation

02-12-2007, 10:52 PM	#12
Feroc1ty	Don't think thats quite correct. 7 != 31+1 _________ \|3 1 = 3\| _________ \|3 + 1 = 4\| _________

02-12-2007, 11:50 PM

#13

Ammorth

Quote:

Originally Posted by Jokes-On-You

Don't think thats quite correct.
7 != 3*1+1
_________
|3 * 1 = 3|
_________
|3 + 1 = 4|
_________

7 = 3*2+1

02-13-2007, 12:16 AM	#14
notor	sorry.... but could someone explain to me what is going on in the JASS script?

02-13-2007, 03:46 AM	#15
notor	nobody? :P