added sources for Slick

Former-commit-id: 1647fa32ef6894bd7db44f741f07c2f4dcdf9054
Former-commit-id: 0e5810dcfbe1fd59b13e7cabe9f1e93c5542da2d

lib/slick-source/org/newdawn/slick/XMLPackedSheet.java

@@ -0,0 +1,65 @@
+package org.newdawn.slick;
+
+import java.util.HashMap;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+
+import org.newdawn.slick.util.ResourceLoader;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.NodeList;
+
+/**
+ * A sprite sheet based on an XML descriptor generated from the simple slick tool
+ * 
+ * @author kevin
+ */
+public class XMLPackedSheet {
+	/** The full sheet image */
+	private Image image;
+	/** The sprites stored on the image */
+	private HashMap sprites = new HashMap();
+	
+	/**
+	 * Create a new XML packed sheet from the XML output by the slick tool
+	 * 
+	 * @param imageRef The reference to the image
+	 * @param xmlRef The reference to the XML
+	 * @throws SlickException Indicates a failure to parse the XML or read the image
+	 */
+	public XMLPackedSheet(String imageRef, String xmlRef) throws SlickException
+	{
+		image = new Image(imageRef, false, Image.FILTER_NEAREST);
+	
+		try {
+			DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
+			Document doc = builder.parse(ResourceLoader.getResourceAsStream(xmlRef));
+			
+			NodeList list = doc.getElementsByTagName("sprite");
+			for (int i=0;i<list.getLength();i++) {
+				Element element = (Element) list.item(i);
+				
+				String name = element.getAttribute("name");
+				int x = Integer.parseInt(element.getAttribute("x"));
+				int y = Integer.parseInt(element.getAttribute("y"));
+				int width = Integer.parseInt(element.getAttribute("width"));
+				int height = Integer.parseInt(element.getAttribute("height"));
+				
+				sprites.put(name, image.getSubImage(x,y,width,height));
+			}
+		} catch (Exception e) {
+			throw new SlickException("Failed to parse sprite sheet XML", e);
+		}
+	}
+	
+	/**
+	 * Get a sprite by it's given name
+	 * 
+	 * @param name The name of the sprite to retrieve
+	 * @return The sprite from the sheet or null if the name isn't used in this sheet
+	 */
+	public Image getSprite(String name) {
+		return (Image) sprites.get(name);
+	}
+}