Various fixes to support negative tile coordinates; created sparse miso
scene model and associated business to store scene data in an arbitrary set of blocks rather than fixed arrays; finally stuck a fork in scene width and height as well as view width and height along with origin offset and a few other now obsolete bits. git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@2434 542714f4-19e9-0310-aa3c-eee0fc999fb1
This commit is contained in:
Michael Bayne
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//
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// $Id: SparseMisoSceneParser.java,v 1.1 2003/04/19 22:40:34 mdb Exp $
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package com.threerings.miso.tools.xml;
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import java.io.IOException;
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import java.io.FileInputStream;
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import org.xml.sax.SAXException;
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import org.apache.commons.digester.Digester;
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import com.samskivert.util.StringUtil;
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import com.threerings.tools.xml.NestableRuleSet;
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import com.threerings.miso.data.SparseMisoSceneModel;
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/**
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* A simple class for parsing simple miso scene models.
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*/
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public class SparseMisoSceneParser
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{
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/**
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* Constructs a scene parser that parses scenes with the specified XML
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* path prefix.
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*/
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public SparseMisoSceneParser (String prefix)
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{
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// create and configure our digester
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_digester = new Digester();
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// create our scene rule set
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SparseMisoSceneRuleSet set = new SparseMisoSceneRuleSet();
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// configure our top-level path prefix
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if (StringUtil.blank(prefix)) {
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_prefix = set.getOuterElement();
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} else {
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_prefix = prefix + "/" + set.getOuterElement();
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}
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// add the scene rules
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set.addRuleInstances(_prefix, _digester);
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// add a rule to grab the finished scene model
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_digester.addSetNext(
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_prefix, "setScene", SparseMisoSceneModel.class.getName());
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}
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/**
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* Parses the XML file at the specified path into a scene model
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* instance.
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*/
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public SparseMisoSceneModel parseScene (String path)
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throws IOException, SAXException
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{
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_model = null;
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_digester.push(this);
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_digester.parse(new FileInputStream(path));
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return _model;
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}
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/**
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* Called by the parser once the scene is parsed.
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*/
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public void setScene (SparseMisoSceneModel model)
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{
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_model = model;
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}
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protected String _prefix;
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protected Digester _digester;
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protected SparseMisoSceneModel _model;
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}
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//
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// $Id: SparseMisoSceneRuleSet.java,v 1.1 2003/04/19 22:40:34 mdb Exp $
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package com.threerings.miso.tools.xml;
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import java.util.ArrayList;
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import org.xml.sax.Attributes;
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import org.apache.commons.digester.Digester;
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import org.apache.commons.digester.Rule;
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import com.samskivert.xml.CallMethodSpecialRule;
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import com.samskivert.xml.SetFieldRule;
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import com.samskivert.xml.SetPropertyFieldsRule;
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import com.threerings.tools.xml.NestableRuleSet;
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import com.threerings.miso.data.ObjectInfo;
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import com.threerings.miso.data.SparseMisoSceneModel.Section;
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import com.threerings.miso.data.SparseMisoSceneModel;
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/**
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* Used to parse a {@link SparseMisoSceneModel} from XML.
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*/
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public class SparseMisoSceneRuleSet implements NestableRuleSet
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{
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// documentation inherited from interface
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public String getOuterElement ()
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{
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return SparseMisoSceneWriter.OUTER_ELEMENT;
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}
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// documentation inherited from interface
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public void addRuleInstances (String prefix, Digester dig)
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{
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// this creates the appropriate instance when we encounter our
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// prefix tag
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dig.addRule(prefix, new Rule(dig) {
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public void begin (Attributes attributes) throws Exception {
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digester.push(createMisoSceneModel());
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}
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public void end () throws Exception {
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digester.pop();
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}
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});
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// set up rules to parse and set our fields
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dig.addRule(prefix + "/swidth", new SetFieldRule(dig, "swidth"));
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dig.addRule(prefix + "/sheight", new SetFieldRule(dig, "sheight"));
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String sprefix = prefix + "/sections/section";
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dig.addObjectCreate(sprefix, Section.class.getName());
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dig.addRule(sprefix, new SetPropertyFieldsRule(dig));
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dig.addRule(sprefix + "/base", new SetFieldRule(dig, "baseTileIds"));
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dig.addObjectCreate(sprefix + "/objects/object",
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ObjectInfo.class.getName());
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dig.addRule(sprefix + "/objects/object",
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new SetPropertyFieldsRule(dig));
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dig.addSetNext(sprefix + "/objects/object", "addObject",
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ObjectInfo.class.getName());
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dig.addSetNext(sprefix, "setSection", Section.class.getName());
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}
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protected SparseMisoSceneModel createMisoSceneModel ()
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{
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return new SparseMisoSceneModel();
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}
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}
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@@ -0,0 +1,109 @@
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//
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// $Id: SparseMisoSceneWriter.java,v 1.1 2003/04/19 22:40:34 mdb Exp $
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package com.threerings.miso.tools.xml;
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import java.util.Iterator;
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import org.xml.sax.SAXException;
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import org.xml.sax.helpers.AttributesImpl;
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import com.megginson.sax.DataWriter;
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import com.samskivert.util.StringUtil;
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import com.threerings.tools.xml.NestableWriter;
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import com.threerings.miso.data.ObjectInfo;
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import com.threerings.miso.data.SparseMisoSceneModel.Section;
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import com.threerings.miso.data.SparseMisoSceneModel;
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/**
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* Generates an XML representation of a {@link SparseMisoSceneModel}.
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*/
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public class SparseMisoSceneWriter implements NestableWriter
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{
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/** The element used to enclose scene models written with this
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* writer. */
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public static final String OUTER_ELEMENT = "miso";
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// documentation inherited from interface
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public void write (Object object, DataWriter writer)
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throws SAXException
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{
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SparseMisoSceneModel model = (SparseMisoSceneModel)object;
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writer.startElement(OUTER_ELEMENT);
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writeSceneData(model, writer);
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writer.endElement(OUTER_ELEMENT);
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}
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/**
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* Writes just the scene data which is handy for derived classes which
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* may wish to add their own scene data to the scene output.
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*/
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protected void writeSceneData (SparseMisoSceneModel model,
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DataWriter writer)
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throws SAXException
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{
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writer.dataElement("swidth", Integer.toString(model.swidth));
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writer.dataElement("sheight", Integer.toString(model.sheight));
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writer.startElement("sections");
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for (Iterator iter = model.getSections(); iter.hasNext(); ) {
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Section sect = (Section)iter.next();
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AttributesImpl attrs = new AttributesImpl();
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attrs.addAttribute("", "x", "", "", String.valueOf(sect.x));
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attrs.addAttribute("", "y", "", "", String.valueOf(sect.y));
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attrs.addAttribute("", "width", "", "", String.valueOf(sect.width));
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writer.startElement("", "section", "", attrs);
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writer.dataElement(
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"base", StringUtil.toString(sect.baseTileIds, "", ""));
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// write our uninteresting object tile information
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writer.startElement("objects");
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for (int ii = 0; ii < sect.objectTileIds.length; ii++) {
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attrs = new AttributesImpl();
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attrs.addAttribute("", "tileId", "", "",
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String.valueOf(sect.objectTileIds[ii]));
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attrs.addAttribute("", "x", "", "",
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String.valueOf(sect.objectXs[ii]));
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attrs.addAttribute("", "y", "", "",
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String.valueOf(sect.objectYs[ii]));
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writer.emptyElement("", "object", "", attrs);
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}
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// write our interesting object tile information
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for (int ii = 0; ii < sect.objectInfo.length; ii++) {
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ObjectInfo info = sect.objectInfo[ii];
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attrs = new AttributesImpl();
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attrs.addAttribute("", "tileId", "", "",
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String.valueOf(info.tileId));
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attrs.addAttribute("", "x", "", "", String.valueOf(info.x));
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attrs.addAttribute("", "y", "", "", String.valueOf(info.y));
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if (!StringUtil.blank(info.action)) {
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attrs.addAttribute("", "action", "", "", info.action);
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}
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if (info.priority != 0) {
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attrs.addAttribute("", "priority", "", "",
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String.valueOf(info.priority));
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}
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if (info.sx != 0 || info.sy != 0) {
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attrs.addAttribute("", "sx", "", "",
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String.valueOf(info.sx));
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attrs.addAttribute("", "sy", "", "",
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String.valueOf(info.sy));
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attrs.addAttribute("", "sorient", "", "",
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String.valueOf(info.sorient));
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}
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if (info.zations != 0) {
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attrs.addAttribute("", "zations", "", "",
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String.valueOf(info.zations));
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}
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writer.emptyElement("", "object", "", attrs);
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}
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writer.endElement("objects");
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writer.endElement("section");
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}
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writer.endElement("sections");
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}
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}
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