Make entities circle around a few blocks over player's head

Hi!

I'm working on a helicopter plugin and i've got the flying done. What i need to do, is make entities or blocks circle around a few blocks over the player's head. Like this(showing with blocks):


The blocks are supposed to be minecarts. Any ideas? Thanks

Edit:

I guess i have to use vectors in some way?

 

jimbo8 You need to use a bit of trig, with sin and cos.

 

Maurdekye

And how am I going to do that?

 

jimbo8 Well, a simple explanation is that if you take n, and multiply a vector's x coordinate by sin(n), and the y coordinate by cos(n), then the vector will rotate around (0, 0) by n degrees. You can use that to your advantage.

 

Well, i'm terrible at math, so i need a headsup here

No but seriously, i'm really, really bad at math. Got an example/snippet of a code so i know what i'm about to work with? I haven't really worked with sin and cos.
Maurdekye

 

No snippets from me. But here is an overview of sin and cos.

x = cos(x)
y = sin(x)

if you enter this into a graphing calculator (while set to parametric function) it will output a circle in your graph. If you wish to change the size of the circle you must change the amplitude of the sin or cos function. This is done with a number placed in front of sin/cos. For example if you wanted the radius to be 5 you would enter.

x = 5cos(x)
y = 5sin(x)

So knowing this you should be able to apply it to minecraft using x and z to draw circles.