[FEATURE] Added days into Timer

Credits to @parnassian

src/main/java/org/parabot/environment/api/utils/Timer.java

@@ -1,11 +1,9 @@
 package org.parabot.environment.api.utils;
 
 /**
- * 
  * A simple timer class
  *
  * @author Everel, Parameter
- * 
  */
 public class Timer {
     private long start;
@@ -17,7 +15,6 @@ public class Timer {
      * @param end
      */
     public Timer(long end) {
-
         start = System.currentTimeMillis();
         this.end = System.currentTimeMillis() + end;
     }
@@ -92,8 +89,8 @@ public class Timer {
     /**
      * Calculates hourly gains based on given variable
      *
-	 * @param gained
-	 *            variable
+     * @param gained variable
+     *
      * @return hourly gains
      */
     public int getPerHour(final int gained) {
@@ -101,7 +98,7 @@ public class Timer {
     }
 
     /**
-	 * Generates string based on HH:MM:SS
+     * Generates string based on DD:HH:MM:SS
      *
      * @return String
      */
@@ -109,9 +106,16 @@ public class Timer {
     public String toString() {
         StringBuilder b       = new StringBuilder();
         long          elapsed = getElapsedTime();
-		int second = (int) (elapsed / 1000 % 60);
-		int minute = (int) (elapsed / 60000 % 60);
-		int hour = (int) (elapsed / 3600000 % 60);
+        int           day     = (int) (elapsed / 86400000);
+        elapsed -= day * 86400000;
+        int hour = (int) (elapsed / 3600000);
+        elapsed -= hour * 3600000;
+        int minute = (int) (elapsed / 60000);
+        elapsed -= minute * 60000;
+        int second = (int) (elapsed / 1000);
+        if (day > 0) {
+            b.append(day < 10 ? "0" : "").append(day).append("d:");
+        }
         b.append(hour < 10 ? "0" : "").append(hour).append(":");
         b.append(minute < 10 ? "0" : "").append(minute).append(":");
         b.append(second < 10 ? "0" : "").append(second);