Vector

[developa]

Hello, what is the function of Vector3? How can this be replaced with getDistanceBetweenPoints3D on Vector3?

[Mr.Loki]

A vector3 holds 3 values and can be declared by using:

v = Vector3()

It's great for storing positions. (Which I use a lot)

Using the above example would create an empty Vector returning (0,0,0)

to access the values in the vector we use variables x,y,z:
 

x = v.x
y = v.y
z = v.z
-- x = 0
-- y = 0
-- z = 0

You can even set the values of the vector

middleOfMap = Vector3(0,0,-3)

 

To replace "getDistanceBetweenPoints3D" using this method you'd need to minus 1 vector from another and use the ".length" variable:

distance = (v-middleOfMap).length

The value returned is always absolute so it never goes below 0, meaning it does not matter the order in which you subtract them.

which is the same as:

direction = (v-middleOfMap)
distance = abs(sqrt(direction.x*direction.x+direction.y*direction.y+direction.z*direction.z))

This example gets the distance between 2 players

local pos1 = getRandomPlayer(  ).position
local pos2 = getRandomPlayer(  ).position
local distance = (pos1-pos2).length
print(distance)

Also you should check out OOP

Edited August 23, 2017 by Mr.Loki

[Mr.Loki]

I also forgot to mention that you can also use vectors in functions that requires position data such as setElementPosition, setElementRotation,getWorldFromScreenPosition

and lots more.

setElementPosition(localPlayer, middleOfMap)

 

[developa]

OK, thank you. And is it going to change math.random to something else? For example 

local rnd = random(5, 10)

Or not?
 

[Mr.Loki]

It won't and it is better to localize those math functions for better performance

local random = math.random
local rn = random(10)