Compass Guide[1.12.2] v1.0

//Example location
var x=8.5;
var y=5;
var z=14.5;

//Compass refresh delay, 0 is every tick.
//Be careful, it will send a lots of packet to client.
//Not recommended above 10
var ti=0;

function timer(e){
    if(e.id == 61){
        //Record current player location
        var px = e.player.getX();
        var py = e.player.getY();
        var pz = e.player.getZ();
        //Calculate the difference in plane angle between two points
        var ts = Math.atan2((x-px),(z-pz))*(180/Math.PI);
        //Get the current orientation of the player
        var tr = e.player.getRotation();
        //Calculate the angular difference toward the bottom
        var tp = (tr>0?tr-360:tr) + (ts<0?ts+360:ts);
        if(tp<-180){
            tp = tp+360;
        }else if(tp>180){
            tp = tp-360;
        }
        //Building compass line text
        var tc = "§r[";
        for(var i = -10;i<10;i++){
            if(i==0) tc = tc + "§a|";
            if(((i==-10||i==9) && Math.abs(tp)>105) || (tp>((-i-1)*10-5) && tp<((-i+1)*10-5))){
                tc = tc + "§e-";
            }else{
                tc = tc + "§7-";
            }
        }
        //End the build and calculate the distance between the two points in the three-dimensional space and round up
        tc = tc + "§r] " + Math.ceil(Math.sqrt(Math.abs((x-px)*(x-px)+(y-py)*(y-py)+(z-pz)*(z-pz)))) + "m";
        //Output compass line text
        e.API.executeCommand(e.player.world, "/title " + e.player.getDisplayName() + " actionbar {\"text\":\"" + tc + "\"}");
    }
}

function keyPressed(e){
    //When player click "~" key
    if(e.key==41){
        //If it have been started
        if(e.player.timers.has(61)){
            //Stop to send and clear it
            e.player.timers.reset(61);
            e.player.timers.stop(61);
            e.API.executeCommand(e.player.world, "/title " + e.player.getDisplayName() + " actionbar {\"text\":\"\"}");
        }else{
            //Start to send
            e.player.timers.forceStart(61,ti,true);
        }
    }
}