From 6fa5764e14196a15af0031f167b62946c40134dc Mon Sep 17 00:00:00 2001
From: Andrin Fassbind <fassband@students.zhaw.ch>
Date: Fri, 10 Dec 2021 09:41:58 +0100
Subject: [PATCH] refactored longestRoad in SiedlerBoard

---
 .idea/misc.xml                      |   2 +-
 src/ch/zhaw/catan/SiedlerBoard.java | 109 ++++++++++++----------------
 2 files changed, 48 insertions(+), 63 deletions(-)

diff --git a/.idea/misc.xml b/.idea/misc.xml
index c3dfb30..b573818 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="openjdk-17" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_X" default="true" project-jdk-name="openjdk-17" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>
\ No newline at end of file
diff --git a/src/ch/zhaw/catan/SiedlerBoard.java b/src/ch/zhaw/catan/SiedlerBoard.java
index 6a4cbb7..fa72d2e 100644
--- a/src/ch/zhaw/catan/SiedlerBoard.java
+++ b/src/ch/zhaw/catan/SiedlerBoard.java
@@ -26,8 +26,8 @@ public class SiedlerBoard extends HexBoard<Config.Land, Settlement, Road, String
      * Value: Field Object
      */
     private final HashMap<Point, Field> fields = new HashMap<>();
-    Config.Faction longestRoadFaction = null;
-    int longestRoadLenth = 0;
+    private Config.Faction longestRoadFaction = null;
+    private int longestRoadLenth = 0;
 
     /**
      * Method to create the predefined game field from Config.
@@ -161,25 +161,10 @@ public class SiedlerBoard extends HexBoard<Config.Land, Settlement, Road, String
             }
         }
 
-        if (longestRoadFaction == null) {
-            Config.Faction currentFaction = null;
-            int currentRoad = 4;
-            for (Config.Faction factionA : players.keySet()) {
-                if (players.get(factionA) > currentRoad) {
-                    currentFaction = factionA;
-                    currentRoad = players.get(factionA);
-                }
-            }
-            if (currentFaction != null) {
-                longestRoadFaction = currentFaction;
-                longestRoadLenth = currentRoad;
-            }
-        } else {
-            for (Config.Faction faction : players.keySet()) {
-                if (players.get(faction) >= 5 && players.get(faction) > longestRoadLenth) {
-                    longestRoadFaction = faction;
-                    longestRoadLenth = players.get(faction);
-                }
+        for (Config.Faction factionA : players.keySet()) {
+            if (players.get(factionA) > longestRoadLenth && players.get(factionA) > 4) {
+                longestRoadFaction = factionA;
+                longestRoadLenth = players.get(factionA);
             }
         }
         return longestRoadFaction;
@@ -202,75 +187,55 @@ public class SiedlerBoard extends HexBoard<Config.Land, Settlement, Road, String
      */
     private HashSet<Road> countRoad(Config.Faction faction, Point position, HashSet<Road> roads, boolean add) {
         List<Road> roadsList = getAdjacentEdges(position);
+        //Checks if roads is interrupted by other players settlement
         if (getCorner(position) != null && getCorner(position).getFaction() != faction) {
             return roads;
         }
-
+        //removes roads from roadsList which doesn't belong to the same player or which are allready added to roads.
         for (Road roadsRoad : roads) {
-            Iterator<Road> it3 = roadsList.iterator();
-            while (it3.hasNext()) {
-                Road roadsListRoad = it3.next();
+            Iterator<Road> it = roadsList.iterator();
+            while (it.hasNext()) {
+                Road roadsListRoad = it.next();
                 if (roadsListRoad == roadsRoad || roadsListRoad.getFaction() != faction) {
-                    it3.remove();
+                    it.remove();
                 }
             }
         }
-
         if (roadsList.size() == 1) {
             roads.add(roadsList.get(0));
             position = getNextPoint(roadsList.get(0), position);
             roads = countRoad(faction, position, roads, false);
         } else if (roadsList.size() == 2) {
-            HashSet<Road> listOne = (HashSet<Road>) roads.clone();
-            HashSet<Road> listTwo = (HashSet<Road>) roads.clone();
-            listOne.add(roadsList.get(0));
-            Point positionOne = getNextPoint(roadsList.get(0), position);
-            listTwo.add(roadsList.get(1));
-            Point positionTwo = getNextPoint(roadsList.get(1), position);
-            listOne = countRoad(faction, positionOne, listOne, false);
-            listTwo = countRoad(faction, positionTwo, listTwo, false);
+            ArrayList<HashSet> possibleRoads = checkRoadsSwitch(faction,2,roadsList,position);
             if (add) {
-                listTwo.addAll(listOne);
-                roads = listTwo;
+                possibleRoads.get(1).addAll(possibleRoads.get(0));
+                roads.addAll(possibleRoads.get(1));
             } else {
                 HashSet<Road> tallest;
-                if (listOne.size() >= listTwo.size()) {
-                    tallest = listOne;
+                if (possibleRoads.get(0).size() >= possibleRoads.get(1).size()) {
+                    tallest = possibleRoads.get(0);
                 } else {
-                    tallest = listTwo;
+                    tallest = possibleRoads.get(1);
                 }
                 roads.addAll(tallest);
             }
 
         } else if (roadsList.size() == 3) {
-            HashSet<Road> listOne = (HashSet<Road>) roads.clone();
-            HashSet<Road> listTwo = (HashSet<Road>) roads.clone();
-            HashSet<Road> listThree = (HashSet<Road>) roads.clone();
-            listOne.add(roadsList.get(0));
-            Point positionOne = getNextPoint(roadsList.get(0), position);
-            listTwo.add(roadsList.get(1));
-            Point positionTwo = getNextPoint(roadsList.get(1), position);
-            listThree.add(roadsList.get(2));
-            Point positionThree = getNextPoint(roadsList.get(2), position);
-            listOne = countRoad(faction, positionOne, listOne, false);
-            listTwo = countRoad(faction, positionTwo, listTwo, false);
-            listThree = countRoad(faction, positionThree, listThree, false);
-
+            ArrayList<HashSet> possibleRoads = checkRoadsSwitch(faction,3,roadsList,position);
             HashSet<Road> tallest;
             HashSet<Road> secondTallest;
-
-            if (listOne.size() >= listTwo.size()) {
-                tallest = listOne;
-                secondTallest = listTwo;
+            if (possibleRoads.get(0).size() >= possibleRoads.get(1).size()) {
+                tallest = possibleRoads.get(0);
+                secondTallest = possibleRoads.get(1);
             } else {
-                tallest = listTwo;
-                secondTallest = listOne;
+                tallest = possibleRoads.get(1);
+                secondTallest = possibleRoads.get(0);
             }
-            if (listThree.size() >= secondTallest.size()) {
-                secondTallest = listThree;
+            if (possibleRoads.get(2).size() >= secondTallest.size()) {
+                secondTallest = possibleRoads.get(2);
             }
             tallest.addAll(secondTallest);
-            roads = tallest;
+            roads.addAll(tallest);
         }
         return roads;
     }
@@ -292,4 +257,24 @@ public class SiedlerBoard extends HexBoard<Config.Land, Settlement, Road, String
         }
         return position;
     }
+
+    /**
+     * This method checks at a roads switch, which road starting at the switch will be the longest possibility.
+     * @param faction the faction of the player to check on
+     * @param numberOfSwitches how many adjacent roads there are at the corner
+     * @param roadsList the list of adjacent roads
+     * @param position the current corner from where to count further.
+     * @return ArrayList of HashSet with all possible forks.
+     */
+    private ArrayList<HashSet> checkRoadsSwitch(Config.Faction faction,int numberOfSwitches,List<Road> roadsList,Point position) {
+        ArrayList<HashSet> possibleRoads = new ArrayList<>();
+        for (int i = 0;i<numberOfSwitches;i++) {
+            HashSet<Road> list = new HashSet<>();
+            list.add(roadsList.get(i));
+            Point nextPosition = getNextPoint(roadsList.get(i),position);
+            list = countRoad(faction, nextPosition, list, false);
+            possibleRoads.add(list);
+        }
+        return possibleRoads;
+    }
 }