[Spell] Parabola/Arc Equation

[Almia]

Hi for those who read this.

Can somebody give me a tutorial which includes parabola/arc system for missiles without the use of indexing?
i got one but it uses index

 

[Erkki2]

I don't know what exactly you are looking for, but this is a function I made to use in my spells which require some parabola. It takes dist, which is the (x)distance between roots, height which is the max height of the parabola, and x value, and returns z value.

If you use this function for a missile, just give it the distance that the missile has travelled as x-value, and set the height of a missile to return value.

function Parabola takes real dist, real height, real x returns real
    local real a = 4*height/dist
    return a*x*(-x/(dist)+1)
endfunction

 

[Almia]

It can be used in GUI?

 

[Erkki2]

To use it in gui, copy and paste it to map header (the picture of a tft-map above triggers). When you call the function, use custom script.

 

[Mr_Bean]

Is dist the total distance the missile will travel? What if the missile is following a unit which is moving?

 

[Erkki2]

I haven't used "homing" missiles in my spells, so this function doesn't take that into account.