Added new package and finished Orb implementation

Will still eventually need generate implementation, but not soon

src/main/java/cr0s/warpdrive/conf/structures/DeployableStructure.java

@@ -1,7 +1,7 @@
 /**
  *
  */
-package cr0s.warpdrive.conf;
+package cr0s.warpdrive.conf.structures;
 
 import net.minecraft.world.gen.feature.WorldGenerator;
 

src/main/java/cr0s/warpdrive/conf/structures/Orb.java

@@ -1,5 +1,6 @@
-package cr0s.warpdrive.conf;
+package cr0s.warpdrive.conf.structures;
 
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Map.Entry;
 import java.util.Random;
@@ -12,22 +13,42 @@ import org.w3c.dom.Element;
 import org.w3c.dom.NodeList;
 
 import cr0s.warpdrive.WarpDrive;
+import cr0s.warpdrive.conf.InvalidXmlException;
+import cr0s.warpdrive.conf.XmlRepresentable;
 
 public abstract class Orb extends DeployableStructure implements XmlRepresentable {
 
+	private OrbShell[] shellRelative;
+	private ArrayList<OrbShell> shells;
+	
 	public Orb(int diameter) {
 		super(diameter, diameter, diameter);
+
 	}
 	
 	@Override
-	public void loadFromXmlElement(Element e) {
-		// TODO Auto-generated method stub
+	public void loadFromXmlElement(Element e) throws InvalidXmlException {
+
+		NodeList shells = e.getElementsByTagName("shell");
+		for (int i = 0; i < shells.getLength(); i++) {
+			Element tmp = (Element) shells.item(i);
+
+			OrbShell shell = new OrbShell();
+			shell.loadFromXmlElement(tmp);
+
+			setShell(shell.getRadiusInner(), shell.getRadiusOuter(), shell);
+
+		}
 		
 	}
 	
 	@Override
 	public void saveToXmlElement(Element e, Document d) {
-		// TODO Auto-generated method stub
+		for (OrbShell shell : shells) {
+			Element tmp = d.createElement("shell");
+			shell.saveToXmlElement(tmp, d);
+			e.appendChild(tmp);
+		}
 		
 	}
 	
@@ -37,6 +58,20 @@ public abstract class Orb extends DeployableStructure implements XmlRepresentabl
 		return false;
 	}
 
+	public void setShell(int inner, int outer, OrbShell shell) {
+		for (; inner <= outer; inner++)
+			shellRelative[inner] = shell;
+	}
+
+	public OrbShell getShellForRadius(int r) {
+		return shellRelative[r];
+	}
+
+	public Block getBlockForRadius(Random rand, int r) {
+		return shellRelative[r].getNextBlock(rand);
+
+	}
+	
 	public class OrbShell implements XmlRepresentable {
 		
 		private int radiusInner, radiusOuter;
@@ -55,6 +90,13 @@ public abstract class Orb extends DeployableStructure implements XmlRepresentabl
 			blockWeights = new Block[0];
 		}
 		
+		/**
+		 * Gets a block randomly chosen according to the setup of this OrbShell
+		 * 
+		 * @param r
+		 *            The Random to use
+		 * @return A Non-null block instance
+		 */
 		public Block getNextBlock(Random r) {
 			return blockWeights[r.nextInt(totalWeight)];
 		}
@@ -133,6 +175,9 @@ public abstract class Orb extends DeployableStructure implements XmlRepresentabl
 				throw new InvalidXmlException("Invalid integer in shell " + name + "!");
 			}
 
+			if (totalWeight < 1)
+				throw new InvalidXmlException("At least one kind of block must be defined!");
+			
 		}
 		
 		@Override