Small Code Snippets

We can make 5 000 000 of those, but it's ok, I guess.

Better to make stuff like:

function CreateUnitForPlayer takes player owner, integer unitID, real x, real y, real facing, player whichPlayer returns unit
    local integer i
        if GetLocalPlayer() == whichPlayer then
            set i = unitID
        endif
    return CreateUnit(owner, i, x, y, facing)
endfunction

I don't know how this function works exactly, I don't understand how can you create a unit that exists only for one player, but I've seen it on TheHelper.

Or maybe:

function AddSpecialEffectForPlayer takes string path, real x, real y, player whichPlayer returns effect
    local string s
        if GetLocalPlayer() == whichPlayer then
            set s = path
        endif
    return AddSpecialEffect(s, x, y)
endfunction

CreateUnitForPlayer will desynch. (Not necessarily upon call, but when the unit deals or receives damage, for example)

Lol... I didn't see Disciple's Post... He already posted a GetNearestUnit xP

CreateUnitForPlayer will desynch. (Not necessarily upon call, but when the unit deals or receives damage, for example)

With avoiding those, it can be useful.

Lol... I didn't see Disciple's Post... He already posted a GetNearestUnit xP

Yeah, but his is more flexible, I think.

I'm assuming that the function works, but could you explain it to me a bit better, kind of step by step

Mostly, I'm curious as to why (dx^2 + dy^2)/100000 > 100000 is the closest unit (I suppose that 100000 is the max size of all maps?)

No.

You see, I was trying to avoid SquareRoot function (as you can see, there isn't one in it). In the beginning, md variable represents a great distance (probably bigger than the map) which is compared to the location from which it is searching the closest unit. If distance from a picked unit and that location is lower than that distance (which it is), md becomes the distance between the picked unit and the location. Then it compares to the other units, if the distance from a certain unit to that location is lower than the current md, that md becomes that distance.

But, since I'm not using SquareRoot, the system compares each distance squared (since I'm not square rooting it), so md has to represent a distance greater than any other, but it has to be squared (since maybe some distance squared will be greater than that one), so with a little help from Disciple, I used this simple equation:

x = y
x/1000 = y/1000

I had to lower each number because there is a number limit in wc3 from which every next number becomes the negative value of that number (then I would be calculating with negative distances........yeah).

Get it?

Ohhhhh now I got it

Your just getting the x and the y, then using pythagorean thereom

There isn't a ^ (1/2) function so it had to be a number that is much larger than any two squares could be (100000*100000)

But at the same time, x^2 and y^2 would get so big they would flip to negative(odd), so you just divided x^2 + y^2 by 100000

So, does it keep looping over and over, even after you got the unit??? (maybe you should add something so it doesn't loop with over 300 units or something)

_________________________________________________
EDIT

Finally, I'm starting to really understand JASS thanks to these little code snippets, thank you so much for this

Yeah, it loops through all units that satisfy the boolexpr condition. I can't make it run through less units because........because I just can't, I need to check every single one. This is supposed to be fast, so it shouldn't lag.

That flipping-to-negative is a stupid bug and people should be careful with it.

Do you think it would lag awfully in a timed trigger (.05) on a massive risk map??? (each unit has bout 100hp each, cost 1, and each player receives +100 gold per round)

First of all, this is getting offtopic, you should open a new thread or PM me, second of all, you really gave me little information, try to explain the details more (for example, I already lost you at the "massive risk map" part, since I don't know what that is).

I'm not gonna be making any risk maps any time soon, so it doesn't really matter just a bit curious


Btw, How come you wanted to avoid the SquareRoot function?

Arghhhh try to put all your questions in the fewest number of posts possible!

SquareRoot is a slow function, many good jassers are avoiding it. There are also other slow functions that should be avoided: Sin(), Cos(), Tan(), Pow()......

Yeah the questions kind of just keep popping into my mind

Damn sin, cos, tan, pow, all are no good

That makes me sad

I suppose you would only use those if they were absolutely necessary, like a polar coordinate (I think uses one of those)

Yeah, sometimes you have to use those, but I think Pow() isn't necessary in any situation (since Pow(x, 3) = x * x * x).

But with the power of vJass sin, cos and tan won't make problems anymore (since every good vJass code is freakin fast).

If you got any more questions, PM me, that would be better.

Something about the unit for one player, I suppose you could use it as a dummy unit, and create special effects for players who should see it, and not for players who couldn't see it

I'm not really sure when the situation would call for it, but I suppose it would be for an RPG or something

(Maybe a flare behind a wall???)