Minecraft is a blocky game, but I often find myself wanting to build with circles. Most circle datapacks, mods, or plugins create the circles for you out of blocks, removing any possible use it might have had for any survival build. Not this one. This datapack helps you build circles by providing guides out of particles. Just type in "/trigger circle set" and then the number for the radius of the circle (example: "/trigger circle set 4" will create a guide for a circle with a radius of 4), and then you will get a guide for the circle. Any where you see a barrier block particle, place a block. To remove all guides in a world, type in /trigger removeCircles. This works in survival without cheats because it uses a trigger command. Thanks for looking at this datapack. I hope you like it.

ALL CIRCLES 1 - 100 ARE DONE!!!

INFO FOR NERDS:

How did I generate all those long lists of particles and coordinates to make the circles without writing them by hand? A simple program. It's written in c, and the amount of arguments is the radius of your circle (I was too lazy to convert a string to an integer :) ). Here it is:

#include <stdio.h>

#include <math.h>
void format(int circle[​500][​500], int radius);

int main(int argc, char *argv[])

{
  int circle[​500][​500];
  int row = 0;
  int column = 0;
  int i, j, k, r = argc - 1, x = argc - 1, y = argc - 1, d, a, l;

  for (i = 0; i < (((argc - 1) * 2) + 1); i++)
  {
    for (j = 0; j < (((argc - 1) * 2) + 1); j++)
    {
      a = ((i - x) * (i - x)) + ((j - y) * (j - y));
      d = sqrt(a);

      if (r == d)
      {
        circle[​row][​column] = 1;
        column++;
      }
      else
      {
        column++;
      }
    }
    row++;
    column = 0;
  }
  format(circle, argc - 1);
}

void format(int circle[​500][​500], int radius)

{
  for (int i = 0; i < (radius * 2) + 1; i++)
  {
    for (int j = 0; j < (radius * 2) + 1; j++)
    {
      if (circle[​i][​j] == 1)
      {
        printf("summon armor_stand ~%i ~-10 ~%i {Tags:[\"cyl\"],Marker:1,NoGravity:1,Invulnerable:1}\n",i - radius, j - radius);
      }
    }
  }
  return;
}

Bugs or Questions? Report them in the comments.