Fixes exploit where players can avoid death by falling.

Addresses
tastybento/ASkyBlock-Bugs-N-Features#751

src/com/wasteofplastic/askyblock/GridManager.java

@@ -1309,6 +1309,24 @@ public void homeSet(Player player, int number) {
     public void homeSet(final Player player) {
         homeSet(player, 1);
     }
+
+    /**
+     * Checks if a player is in their full island space
+     * @param player
+     * @return true if they are anywhere inside their island space (not just protected area)
+     */
+    public boolean inIslandSpace(Player player) {
+        if (player == null) {
+            return false;
+        }
+        Island island = getIslandAt(player.getLocation());
+        if (island != null) {
+            if (island.inIslandSpace(player.getLocation()) && island.getMembers().contains(player.getUniqueId())) { 
+                return true;
+            }
+        }
+        return false;
+    }
 
     /**
      * Checks if a specific location is within the protected range of an island

src/com/wasteofplastic/askyblock/listeners/PlayerEvents.java

@@ -931,7 +931,7 @@ public void onVisitorGetDamage(EntityDamageEvent e){
         // Entity attacks are handled elsewhere
         if (e.getCause().equals(DamageCause.ENTITY_ATTACK)) return;
         Player p = (Player) e.getEntity();
-        if (!IslandGuard.inWorld(p) || plugin.getGrid().locationIsOnIsland(p, p.getLocation())) return;
+        if (!IslandGuard.inWorld(p) || plugin.getGrid().inIslandSpace(p)) return;
 
         if (Settings.visitorDamagePrevention.contains(e.getCause())) e.setCancelled(true);