From 2b2a1b878eac9ccc6dd7a0d66a0519b9a2d70f6f Mon Sep 17 00:00:00 2001
From: unknown <soper@soper.xyz>
Date: Sat, 19 Jun 2021 18:06:39 -0400
Subject: [PATCH] implemented direction calculation candidate

---
 src/xyz/soper/arty/util/ArtyMath.java | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

diff --git a/src/xyz/soper/arty/util/ArtyMath.java b/src/xyz/soper/arty/util/ArtyMath.java
index 8c83435..7dd8d13 100644
--- a/src/xyz/soper/arty/util/ArtyMath.java
+++ b/src/xyz/soper/arty/util/ArtyMath.java
@@ -21,26 +21,20 @@ public class ArtyMath {
 
     /**
      * Calculates angle from east of the vector.
+     * Uses Minecraft coordinate styling for angle measures
+     * e.g. pi/2 is south (+z) and 3pi/2 is north (-z)
      * @param vector Vector to calculate angle from
      * @return Angle from east in radians
      */
     public static double calculateDirection(Vector vector){
-        vector.setY(0);
-        Vector eastVector = new Vector(1,0,0);
-        return eastVector.angle(vector);
-    }
-
-    public static double calculateDirectionDOTPRODUCT(Vector vector){
         double x = vector.getX();
         double z = vector.getZ();
         double directionMagnitude = Math.sqrt((x*x)+(z*z));
         //dot product is always going to just be the x value
         //since the z value for the east vector is 0.
-        return Math.acos(x/directionMagnitude);
-    }
-
-    public static double calculateDirectionBASICTRIG(Vector vector){
-        return Math.atan(vector.getZ()/vector.getX());
+        double angle = Math.acos(x/directionMagnitude);
+        if(z < 0) angle = 2*Math.PI - angle;
+        return angle;
     }
 
     /**