generic range method added, mob spell casting cleanup

src/engine/ai/MobileFSM.java

@@ -1667,7 +1667,7 @@ public class MobileFSM {
             }
 
         }
-        int random = ThreadLocalRandom.current().nextInt(eligiblePowers.size() *2);
+        int random = ThreadLocalRandom.current().nextInt(eligiblePowers.size());
         int powerToken = 0;
         int powerRank = 0;
         Map<Integer, Integer> entries = eligiblePowers;
@@ -1678,7 +1678,7 @@ public class MobileFSM {
                 powerToken = entry.getKey();
                 powerRank = entry.getValue();
                 PowersBase mobPower = PowersManager.getPowerByToken(powerToken);
-                if (CombatUtilities.inRangeToCast2D(mob, mob.getCombatTarget(), mobPower)) {
+                if (CombatUtilities.inRange2D(mob, mob.getCombatTarget(), mobPower.getRange())) {
                     //PowersManager.useMobPower(mob,(AbstractCharacter)mob.getCombatTarget(),mobPower,powerRank);
                     PerformActionMsg msg = new PerformActionMsg();
                     if(mobPower.isHarmful() == false || mobPower.targetSelf == true){
@@ -1712,16 +1712,7 @@ public class MobileFSM {
         for (Mob mob1 : mobCamp.zoneMobSet) {
             if (mob1.getMobBase().getFlags().contains(Enum.MobFlagType.RESPONDSTOCALLSFORHELP)) {
                 if (mob1.getState() == STATE.Awake) {
-                    Vector3fImmutable loc1 = mob.getLoc();
-                    Vector3fImmutable loc2 = mob1.getLoc();
-                    double sum = 0;
-                    double x = loc1.x - loc2.x;
-                    sum += x * x;
-                    double z = loc1.z - loc2.z;
-                    sum += z * z;
-                    double dist = sqrt(sum);
-                    double aggroRange = mob.getAggroRange();
-                    if (dist <= aggroRange) {
+                    if (CombatUtilities.inRange2D(mob, mob1, mob.getAggroRange()) == true) {
                         MovementUtilities.moveToLocation(mob1, mob.getLoc(), 0);
                     }
                 }

src/engine/ai/utilities/CombatUtilities.java

@@ -33,6 +33,7 @@ import java.util.concurrent.ThreadLocalRandom;
 
 import static engine.math.FastMath.sqr;
 import static java.lang.Math.pow;
+import static java.lang.Math.sqrt;
 
 public class CombatUtilities {
 
@@ -82,18 +83,17 @@ public class CombatUtilities {
 		}
 
 	}
-	public static boolean inRangeToCast2D(Mob agent,AbstractWorldObject target, PowersBase power) {
-
-		if (Float.isNaN(agent.getLoc().x))
-			return false;
-		try {
-			Vector3fImmutable sl = agent.getLoc();
-			Vector3fImmutable tl = target.getLoc();
-			float range = power.getRange();
-			range += CombatManager.calcHitBox(target) + CombatManager.calcHitBox(agent);
-			return !(sl.distanceSquared2D(tl) > sqr(range));
-		} catch (Exception e) {
-			Logger.error(e.toString());
+	public static boolean inRange2D(AbstractWorldObject entity1, AbstractWorldObject entity2, double range){
+		Vector3fImmutable loc1 = entity1.getLoc();
+		Vector3fImmutable loc2 = entity2.getLoc();
+		double sum = 0;
+		double x = loc1.x - loc2.x;
+		sum += x * x;
+		double z = loc1.z - loc2.z;
+		sum += z * z;
+		if(sqrt(sum) <= range){
+			return true;
+		} else {
 			return false;
 		}
 	}