Pick units between 2 points...

[mushroom911]

OK, everyone who has ever played warhammer (fantasy or 40k) should be familiar with bouncing cannonballs, skull of flame, straightline damage...
anyways, How is it possible to "pick all units between 2 points" ive searched the forum, done stuff... it seems to be impossible :banghead:
ok so.. i was thinking point between might work.. but that.... well... both causes lag, leaks etc...

anyways.. the main question here... how to pick units between 2 points in a straight line (and do actions )

+rep 4 help! (if useful )

 

[Exide]

You could try placing a dummy unit at point A, that has a skill which affects nearby units, then order it to move to point B. -When the dummy reaches point B, remove it and pick every unit in a large radius that has the buff that the dummy gave them.
Might work.

 

[mushroom911]

Thx

I think that's cool... if i set aura radius to... 70 make it afect enemies and trigger the rest... ty! +rep!

 

[AceHart]

A better idea is to assume the end points are the diameter of a circle, pick all units inside, and keep those within a given distance to that line.

Requires JASS though for best results:

function ReturnTrue takes nothing returns boolean
	return true
endfunction

function UnitsBetweenPoints takes location startPoint, location endPoint, real distance returns group
    local real x1 = GetLocationX(startPoint)
    local real y1 = GetLocationY(startPoint)
    local real x2 = GetLocationX(endPoint)
    local real y2 = GetLocationY(endPoint)
    local real cx = (x1 + x2) / 2
    local real cy = (y1 + y2) / 2
    local real a = y2 - y1
    local real b = x1 - x2
    local real c = -b * y1 - a * x1
    local real d
    local unit u
    local group g = CreateGroup()
    local group result = CreateGroup()

    if distance == 0 then
        set distance = 100.0
    endif
    set distance = distance * SquareRoot(a * a + b * b)
    call GroupEnumUnitsInRange(g, cx, cy, SquareRoot((cx - x1) * (cx - x1) + (cy - y1) * (cy - y1)), Condition(function ReturnTrue))
    loop
        set u = FirstOfGroup(g)
        exitwhen u == null
        call GroupRemoveUnit(g, u)
        set d = a * GetUnitX(u) + b * GetUnitY(u) + c
        if d >= -distance and d <= distance then
            call GroupAddUnit(result, u)
        endif
    endloop

    call DestroyGroup(g)
    set g = null
    return result
endfunction

The condition function can be adjusted to only find units that match some condition.

Can be called from GUI too, with something like this:
Set Point1 = <some point>
Set Point2 = <some other point>
Custom script: set udg_UnitGroup = UnitsBetweenPoints( udg_Point1, udg_Point2, 100 )

100 is the thickness of the line.

 

[mushroom911]

yay!

ty both alot, dieas in testing (somewhat) avg doesnt allow me to have jass so.... il try teh gui version... should work

 

[Exide]

GUI = JASS, so you must have JASS.

Make a new trigger, click the 'Edit' button, next to 'File', and choose 'Convert to Custom Text'. -Then you'll have JASS.