1 files changed, 117 insertions, 0 deletions
diff --git a/src/tesseract/objects/PhysicalObject.java b/src/tesseract/objects/PhysicalObject.java
new file mode 100644
index 0000000..11ae9d2
--- /dev/null
+++ b/src/tesseract/objects/PhysicalObject.java
@@ -0,0 +1,117 @@
+package tesseract.objects;
+
+import java.util.List;
+
+import javax.media.j3d.BranchGroup;
+import javax.media.j3d.Group;
+import javax.media.j3d.Transform3D;
+import javax.media.j3d.TransformGroup;
+import javax.vecmath.Vector3f;
+
+/**
+ * This class is the parent of all objects in the world.
+ * 
+ * Note: The constructor of a child class must add its shape
+ *  to the transform group for it to be visible.
+ * 
+ * @author Jesse Morgan
+ */
+public abstract class PhysicalObject implements Physical {
+	/**
+	 * The object's current position.
+	 */
+	protected Vector3f myPosition;
+	
+	/**
+	 * BranchGroup of the object.
+	 */
+	private BranchGroup myBranchGroup;
+	
+	/**
+	 * TransformGroup for the object.
+	 */
+	private TransformGroup myTransformGroup;
+	
+	/**
+	 * Does the object still exist in the world.
+	 */
+	protected boolean myExistance;
+
+	/**
+	 * Constructor for a PhysicalObject.
+	 * 
+	 * @param position Initial position.
+	 */
+	
+	public PhysicalObject(final Vector3f position) {
+		myPosition = new Vector3f(position);
+		
+		myExistance = true;
+		
+		myTransformGroup = new TransformGroup();
+		myTransformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
+		
+		myBranchGroup = new BranchGroup();
+		myBranchGroup.setCapability(BranchGroup.ALLOW_DETACH);
+		myBranchGroup.addChild(myTransformGroup);
+
+		updateTransformGroup();
+	}
+
+	/**
+	 * @return The object's position.
+	 */
+	public Vector3f getPosition() {
+		return myPosition;
+	}
+	
+	/**
+	 * @return The transform group of the object.
+	 */
+	protected TransformGroup getTransformGroup() {
+		return myTransformGroup;
+	}
+	
+	
+	/**
+	 * @return Get the BranchGroup.
+	 */
+	public Group getGroup() {
+		return myBranchGroup;
+	}
+	
+	/**
+	 * Remove the object from the world.
+	 */
+	public void detach() {
+		myBranchGroup.detach();
+		myExistance = false;
+	}
+	
+	/**
+	 * Does this object still exist.
+	 * @return true if it exists.
+	 */
+	public boolean isExisting() {
+		return myExistance;
+	}
+
+	/**
+	 * Update the TransformGroup to the new position.
+	 */
+	protected void updateTransformGroup() {
+		Transform3D tmp = new Transform3D();
+		tmp.setTranslation(myPosition);
+		myTransformGroup.setTransform(tmp);
+	}
+
+	/**
+	 * Update the state of the object.
+	 * @param duration How much time has passed.
+	 * @return New objects to add to the world.
+	 */
+	public List<PhysicalObject> updateState(final float duration) {
+		return null;
+	}
+
+}