Get all units within cone

[black.sheep]

Ok so im making a shotgun like spell, with pushback and whatnot, however i want to be able to get every unit within a cone for the spell, i would perfer not to use full jass, (a couple of custom scripts would be fine)

 

[Renendaru]

Wouldn't that be Breath of Fire?

 

[black.sheep]

Well yeah i could use BOF but i cant get all units hit by that spell can I?
I also want to make it mui, which is why it would be hard to use BOF.

 

[Expelliarmus]

Vexorian in Detect units in a cone: (April 30th, 2008, 12:53 PM)

That's not a cone, it is a partial disk.

http://www.wc3jass.com/viewtopic.php?t=238
http://www.wc3jass.com/viewtopic.php?t=213

 

[black.sheep]

Gah jass, it burns!
Well thanks, i might make my own gui version bassed of vexorians one.

 

[MoonSlinger]

If you are not too picky, you can actually just use a segment instead.
It is much much easier.

Assuming:
Your unit cast a spell targeting the floor in X direction
Your "Cone" is about 40 degrees wide (20 degrees either side)

To Do:
- Pick every unit near your caster
- You only want units within 20 degrees each side where the spell is directed
Filter out all other units not within

Trigger

Actions
    Set UnitGroupVar = (Units within 512.00 of (Position of (Triggering unit)))
    Set SpellAngle = (Angle from (Position of (Triggering unit)) to (Target point of ability being cast))
    Unit Group - Pick every unit in UnitGroupVar and do (Actions)
        Loop - Actions
            If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                If - Conditions
                    (Abs(((Angle from (Position of (Triggering unit)) to (Target point of ability being cast)) - SpellAngle))) Greater than 20.00
                Then - Actions
                    Unit Group - Remove (Picked unit) from UnitGroupVar
                Else - Actions

Notes:
- Digest, understand and make it work
- You will need additional conditions to filter out allies and dead units
- Not tested yet... got a feeling you will need more work to figure out if the angles between the caster and target is within 40 degrees.

 

[black.sheep]

hmm well it ill help for now
BTW is the tirggering unit in the condition supposed to be picked unit?

 

[Ellimistrox]

I think a simple solution for this problem would be to base it off breath of fire but make breath of fire give a buff, and unit casts Abil - wait 0.5 secs and select each unit with the Buff? (Then remove the buff)

This will probably not be MUI, now that i think about it, unless you time it perfectly

 

[black.sheep]

EPIC BUMP!
So anyway I tried moonslingers way, I dont think it works right though.

Power Shot Cast
    Events
        Unit - A unit Begins casting an ability
    Conditions
        (Ability being cast) Equal to Power Shot 
    Actions
        Set MUI = (MUI + 1)
        Set TempLoc01 = (Position of (Casting unit))
        Set TempLoc02 = (Target point of ability being cast)
        Set TempReal = (Angle from TempLoc01 to TempLoc02)
        Set PowerShot_Targs[MUI] = (Units within 450.00 of TempLoc01 matching (((Matching unit) belongs to an enemy of (Owner of (Triggering unit))) Equal to True))
        Unit Group - Pick every unit in PowerShot_Targs[MUI] and do (Actions)
            Loop - Actions
                Set TempLoc02 = (Position of (Picked unit))
                If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                    If - Conditions
                        ((Abs((Angle from TempLoc01 to TempLoc02))) - TempReal) Greater than or equal to 20.00
                    Then - Actions
                        Unit Group - Remove (Picked unit) from PowerShot_Targs[MUI]
                    Else - Actions
                Custom script:   call RemoveLocation(udg_TempLoc02)
        Unit Group - Pick every unit in PowerShot_Targs[MUI] and do (Actions)
            Loop - Actions
                Special Effect - Create a special effect attached to the overhead of (Picked unit) using Abilities\Spells\Undead\DeathCoil\DeathCoilMissile.mdl

It doesnt seem to work on some units and it doesnt exactly get all units in a cone.

 

[Cheddar]

Use Breath of Frost and periodically pick everyone with the buff it puts on them.

 

[AceHart]

> ((Abs((Angle from TempLoc01 to TempLoc02))) - TempReal) Greater than or equal to 20.00

This can't possibly work in the general case.
"Angle from" returns an angle between -180 and +180.

 

[black.sheep]

Hmm, so what should i do then?
And no i will not use BOF, because i want to make pushback and other stuff.

 

[Ghostwind]

Make a triangle?

 

[black.sheep]

How?

 

[black.sheep]

Bump

 

[Cheddar]

You're telling me you will avoid doing this:

Your Ad Could Be Here
    Events
        Time - Every 0.02 seconds of game time
    Conditions
    Actions
        Set BreatofFrostKnockbackGroup = (Units in (Playable map area) matching (((Matching unit) has buff Breath of Frost) Equal to True))
        Unit Group - Pick every unit in BreatofFrostKnockbackGroup and do (Actions)
            Loop - Actions
                Set GeneralPoint = (Position of (Picked unit))
                Set GeneralPoint2 = (GeneralPoint offset by 12.00 towards ((Facing of (Picked unit)) + 180.00) degrees)
                Unit - Move (Picked unit) instantly to GeneralPoint2
        Custom script:   call RemoveLocation(udg_GeneralPoint)
        Custom script:   call RemoveLocation(udg_GeneralPoint2)
        Custom script:   call DestroyGroup(udg_BreatofFrostKnockbackGroup)

I'm hurt!

 

[black.sheep]

Ahh thanks.

 

[martix]

http://www.thehelper.net/forums/showpost.php?p=795122&postcount=15
That is all I have to say
Completely leakless and easy, you just have to know your math

 

[AceHart]

> you just have to know your math

It also helps to have a look at the range of values returned by those math functions.
And the usual "around 0" problem when working with angles.

> Completely leakless and easy

It's also not working...


> You're telling me you will avoid doing this

Put the removelocations inside the loop.



Getting units in a sector isn't all that difficult:
http://www.thehelper.net/forums/showthread.php?t=103445

Getting units in a cone is a major mathematical headache.

 

[Cheddar]

And the usual "around 0" problem when working with angles.

For everyone's convenience, and to save everyone the trouble of asking the question:

Unit A is facing an angle of 359, Unit B 1. Your trigger detects anything in a -40 to 40 range, but these two are nearly facing the same direction and the trigger will not fire.