var npcMe,ii = 1,pos_number=0,dir_number =0;
function init(event){
  npcMe = event.npc;
}
function sayListBlocks(x,y,z){
  npcMe.world.spawnParticle("flame",x,y,z,0,0,0,.1,50);

}
function tick(event){
if (pos_number == 4){
  pos_number = 0;
}
switch (pos_number) {
case 0:
pos_number++;
event.npc.setPitch(0);
//
 break;
case 1:
pos_number++;
event.npc.setPitch(-10);
//
 break;
case 2:
pos_number++;
event.npc.setPitch(-20);
//
 break;
case 3:
pos_number++;
dir_number++;
event.npc.setPitch(-30);
//
 break;
}
/////////////


var x0 = npcMe.x;
var y0 = npcMe.y+1;
var z0 = npcMe.z;

//get distance difference
var result = npcMe.rayTraceBlock(200,false,false).pos;
var x1 = result.x - x0;
var y1 = result.y - y0;
var z1 = result.z - z0;

//normalize difference
var length = Math.sqrt(x1 * x1 + y1 * y1 + z1 * z1);
var xn = x1 / length;
var yn = y1 / length;
var zn = z1 / length;
for(var i = 0; i < 100; i++){
    sayListBlocks(x0 + xn * i, y0 + yn * i, z0 + zn * i);
}
}