Altered persistent storage of scenes to be handled by the

SceneRepository.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@117 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/miso/tools/xml/XMLSceneParser.java

@@ -0,0 +1,18 @@
+//
+// $Id: XMLSceneParser.java,v 1.1 2001/07/24 16:10:19 shaper Exp $
+
+package com.threerings.miso.scene.xml;
+
+import java.io.IOException;
+import java.util.ArrayList;
+
+import com.threerings.miso.scene.Scene;
+
+public class XMLSceneParser
+{
+    public Scene loadScene (String fname) throws IOException
+    {
+        // TBD
+        return null;
+    }
+}

src/java/com/threerings/miso/tools/xml/XMLSceneRepository.java

@@ -0,0 +1,74 @@
+//
+// $Id: XMLSceneRepository.java,v 1.1 2001/07/24 16:10:19 shaper Exp $
+
+package com.threerings.miso.scene.xml;
+
+import java.io.IOException;
+import java.util.ArrayList;
+
+import com.samskivert.util.Config;
+import com.threerings.miso.Log;
+import com.threerings.miso.scene.Scene;
+import com.threerings.miso.scene.SceneRepositoryImpl;
+import com.threerings.miso.tile.TileManager;
+
+/**
+ * The XMLFileSceneRepository provides a mechanism for reading scenes
+ * from and writing scenes to XML files.  These files will comprise
+ * the template scene files from which actual runtime game scenes will
+ * be constructed.
+ */
+public class XMLFileSceneRepository extends SceneRepositoryImpl
+{
+    /**
+     * Initialize the XMLFileSceneRepository with the given config and
+     * tile manager objects.
+     *
+     * @param config the config object.
+     * @param tilemgr the tile manager object.
+     */
+    public void init (Config config, TileManager tilemgr)
+    {
+        super.init(config, tilemgr);
+        _root = _config.getValue(CONFIG_ROOT, DEF_ROOT);
+    }
+
+    /**
+     * Loads and returns a Scene object for the scene described in the
+     * specified XML file.
+     *
+     * @param fname the full pathname to the file.
+     * @return the Scene object.
+     */
+    public Scene loadScene (String fname) throws IOException
+    {
+        return _parser.loadScene(fname);
+    }
+
+    /**
+     * Writes a scene to the specified file in the scene root
+     * directory in XML format.
+     *
+     * @param scene the scene to save.
+     * @param fname the file to write the scene to.
+     */
+    public void saveScene (Scene scene, String fname) throws IOException
+    {
+        _writer.saveScene(scene, fname);
+    }
+
+    /** The config key for the root scene directory. */
+    protected static final String CONFIG_ROOT = "miso.sceneroot";
+
+    /** The default root scene directory path. */
+    protected static final String DEF_ROOT = "rsrc/scenes";
+
+    /** The root scene directory path. */
+    protected String _root;
+
+    /** The parser object for reading scenes from files. */
+    protected XMLSceneParser _parser;
+
+    /** The writer object for writing scenes to files. */
+    protected XMLSceneWriter _writer;
+}

src/java/com/threerings/miso/tools/xml/XMLSceneWriter.java

@@ -0,0 +1,79 @@
+//
+// $Id: XMLSceneWriter.java,v 1.1 2001/07/24 16:10:19 shaper Exp $
+
+package com.threerings.miso.scene.xml;
+
+import java.io.*;
+import java.util.ArrayList;
+
+import com.megginson.sax.DataWriter;
+import org.xml.sax.*;
+import org.xml.sax.helpers.AttributesImpl;
+
+import com.samskivert.util.StringUtil;
+import com.threerings.miso.Log;
+import com.threerings.miso.scene.Scene;
+
+/**
+ * The XMLSceneWriter writes a Scene object to an XML file.
+ */
+public class XMLSceneWriter extends DataWriter
+{
+    /**
+     * Construct an XMLSceneWriter object.
+     */
+    public XMLSceneWriter ()
+    {
+        setIndentStep(2);
+    }
+
+    /**
+     * Write the scenes to the specified output file in XML format.
+     *
+     * @param fname the file to write to.
+     */
+    public void saveScene (Scene scene, String fname) throws IOException
+    {
+        FileOutputStream fos = new FileOutputStream(fname);
+        setOutput(new OutputStreamWriter(fos));
+
+        try {
+            startDocument();
+
+            startElement("scene");
+
+            dataElement("name", scene.getName());
+            dataElement("sid", "" + scene.getId());
+            dataElement("version", "" + Scene.getVersion());
+            dataElement("hotspots",
+                        StringUtil.toString(scene.getHotSpots()));
+            dataElement("exits", StringUtil.toString(scene.getExits()));
+
+            startElement("tiles");
+            for (int jj = 0; jj < Scene.getNumLayers(); jj++) {
+                AttributesImpl attrs = new AttributesImpl();
+                attrs.addAttribute("", "lnum", "", "CDATA", "" + jj);
+
+                startElement("", "layer", "", attrs);
+                for (int yy = 0; yy < Scene.getTileHeight(); yy++) {
+                    attrs.clear();
+                    attrs.addAttribute("", "rownum", "", "CDATA", "" + yy);
+
+                    startElement("", "row", "", attrs);
+                    // TODO: write row data.
+                    endElement("row");
+                }
+                endElement("layer");
+            }
+            endElement("tiles");
+
+            endElement("scene");
+            endDocument();
+
+        } catch (SAXException saxe) {
+            Log.warning("Exception writing scene to file " +
+                        "[scene=" + scene + ", [fname=" + fname +
+                        ", saxe=" + saxe + "].");
+        }
+    }
+}