Fix single plot areas

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/object/PlotId.java

@@ -25,6 +25,14 @@ public class PlotId {
         this.y = y;
     }
 
+    public int getX() {
+        return x;
+    }
+
+    public int getY() {
+        return y;
+    }
+
     /**
      * Get a Plot Id based on a string
      *
@@ -40,7 +48,7 @@ public class PlotId {
     }
 
     @Nullable public static PlotId fromStringOrNull(@NotNull String string) {
-        String[] parts = string.split("[;|,]");
+        String[] parts = string.split("[;,.]");
         if (parts.length < 2) {
             return null;
         }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/object/worlds/SinglePlot.java

@@ -44,7 +44,7 @@ public class SinglePlot extends Plot {
     }
 
     @Override public String getWorldName() {
-        return getId().toCommaSeparatedString();
+        return getId().getX() + "." + getId().getY();
     }
 
     @Override public SinglePlotArea getArea() {

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/object/worlds/SinglePlotArea.java

@@ -47,7 +47,7 @@ public class SinglePlotArea extends GridPlotWorld {
     }
 
     public void loadWorld(final PlotId id) {
-        String worldName = id.toCommaSeparatedString();
+        String worldName = id.getX() + "." + id.getY();
         if (WorldUtil.IMP.isWorld(worldName)) {
             return;
         }
@@ -59,12 +59,19 @@ public class SinglePlotArea extends GridPlotWorld {
         setup.step = new ConfigurationNode[0];
         setup.world = worldName;
 
-        // Duplicate 0;0
-        if (setup.type != 0) {
         File container = PlotSquared.imp().getWorldContainer();
         File destination = new File(container, worldName);
+
+        {// convert old
+            File oldFile = new File(container, id.toCommaSeparatedString());
+            if (oldFile.exists()) {
+                oldFile.renameTo(destination);
+            }
+        }
+        // Duplicate 0;0
+        if (setup.type != 0) {
             if (!destination.exists()) {
-                File src = new File(container, "0,0");
+                File src = new File(container, "0.0");
                 if (src.exists()) {
                     if (!destination.exists()) {
                         destination.mkdirs();
@@ -93,7 +100,7 @@ public class SinglePlotArea extends GridPlotWorld {
 
         TaskManager.IMP.sync(new RunnableVal<Object>() {
             @Override public void run(Object value) {
-                String worldName = id.toCommaSeparatedString();
+                String worldName = id.getX() + "." + id.getY();
                 if (WorldUtil.IMP.isWorld(worldName)) {
                     return;
                 }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/object/worlds/SinglePlotAreaManager.java

@@ -44,7 +44,7 @@ public class SinglePlotAreaManager extends DefaultPlotAreaManager {
                     }
                 case 1:
                     if ((c <= '/') || (c >= ':')) {
-                        if (c == ';' || c == ',') {
+                        if (c == '.') {
                             mode = 2;
                             continue;
                         }