[vJASS] how to get x and y of certain location?

[hemmedo]

hi all,

well since there's no any site like stackoverflow for even finding this kind of basic stuff by googling it, unfortunately I have to create a thread here just find and learn the answer.

I need to get x and y of the position of the triggerer unit but 150 offset away by facing angle of triggerer unit.

I'll give rep to fastest reply...since it's gonna be way to easy for most of you

when i convert the gui code, it generates something like this:

PolarProjectionBJ(GetUnitLoc(GetTriggerUnit()), 150.00, GetUnitFacing(GetTriggerUnit()))

but have no idea how to get x and y of this location.

 

[Pyrogasm]

Searchable common.j and blizzard.j uploads, courtesy of Bo:
common.j -- patch 1.30.4 | HIVE
blizzard.j -- patch 1.30.4 | HIVE

GetLocationX() and GetLocationY(). These are also available in GUI as "X coordinate of <location>" and "Y coordinate of <location>"....

 

[loktar]

Or GetUnitX/Y if you don't need the location itself.

 

[Rigborn]

GetLocationX/Y

 

[hemmedo]

I did it like this which it works but I doubt it's the most efficient way:

            set u = GetTriggerUnit()
        set l = PolarProjectionBJ(GetUnitLoc(u), 150.00, GetUnitFacing(u))
            set x = GetLocationX(l)
            set y = GetLocationY(l)

 

[Rigborn]

You can also do it without even using locations at all.

 

[loktar]

You can find PolarProjectionBJ in blizzard.j (linked earlier), so you can replace that function.

 

[Dr Super Good]

One can also do this with a bit of high school mathematics and the X and Y of the unit. Polar projection involves basic trigonometry and JASS/Lua provides one with basic trigonometric functions such as Sine and Cosine. Of course this is assuming one is 13 and older so as to have actually gone to high school to learn this.

x = GetUnitX(u) +150 * Cos(GetUnitFacing(u) * bj_DEGTORAD)
y = GetUnitY(u) +150 * Sin(GetUnitFacing(u) * bj_DEGTORAD)

function PolarProjectionBJ takes location source,real dist,real angle returns location
    local real x = GetLocationX(source) + dist * Cos(angle * bj_DEGTORAD)
    local real y = GetLocationY(source) + dist * Sin(angle * bj_DEGTORAD)
    return Location(x, y)
endfunction

 

[hemmedo]

One can also do this with a bit of high school mathematics and the X and Y of the unit. Polar projection involves basic trigonometry and JASS/Lua provides one with basic trigonometric functions such as Sine and Cosine. Of course this is assuming one is 13 and older so as to have actually gone to high school to learn this.

x = GetUnitX(u) +150 * Cos(GetUnitFacing(u) * bj_DEGTORAD)
y = GetUnitY(u) +150 * Sin(GetUnitFacing(u) * bj_DEGTORAD)

function PolarProjectionBJ takes location source,real dist,real angle returns location
    local real x = GetLocationX(source) + dist * Cos(angle * bj_DEGTORAD)
    local real y = GetLocationY(source) + dist * Sin(angle * bj_DEGTORAD)
    return Location(x, y)
endfunction

oh...yeah I'm gonna change that code with this.