Hi Yuri,
you are right I should have posted an example. You can find it at:
www.m42.de/projects/xith3d/sharedcopy.zip
Any required additional lib should be in www.m42.de/projects/xith3d/xith_libs.zip.
(I am sorry not to have a working jnlp environment at the moment - therefore it is a bit more complicated than it could be).
It uses Xith3DCamera for camera movement and some basic code I got from JDC’s demos.
The relevant class is Levelold (sharedCopy is used in method getFullLevelNode):
`
package de.game.pac3d.xith3d.level;
import com.xith3d.scenegraph.*;
import com.xith3d.test.Cube;
import javax.vecmath.Color3f;
import javax.vecmath.Vector3f;
import javax.vecmath.Point3f;
import java.io.*;
import java.util.Vector;
import java.util.Hashtable;
/**
* Created by IntelliJ IDEA.
* User: Stefan
* Date: 01.02.2004
* Time: 13:40:06
*
* __I__
* .-'" . "'-.
* .' / . ' . \ '.
* /_.-..-..-..-..-._\ .--------------------------------.
* # _,,_ ( I hear it might rain code today )
* #/` `\ /'-------------------------------'
* / / 6 6\ \
* \/\ Y /\/ /\-/\
* #/ `'U` \ /a a \ _
* , ( \ | \ =\ Y =/-~~~~~~-,_____/ )
* |\|\_/# \_/ '^--' ______/
* \/'. \ /'\ \ /
* \ /=\ / || |---'\ \
* /____)/____) (_(__| ((__|
*
*/
public class Levelold
{
public static final int SIZE = 65536;
public static final float ITEM_LENGTH = 1f / SIZE;
Hashtable elements;
char fields[][];
// boundary of field - surounding walkable level
private final char BOUNDARY = '#';
public Levelold(String name)
{
elements = new Hashtable();
Vector lines = new Vector();
int width = 0;
BufferedReader myReader = null;
try
{
String data =
"####################" + "\n" +
"# #" + "\n" +
"# ABC DEF GHI #" + "\n" +
"# #" + "\n" +
"# #" + "\n" +
"# ABC DEF GHI #" + "\n" +
"# ABC DEF GHI #" + "\n" +
"# ABC DEF GHI #" + "\n" +
"# #" + "\n" +
"# J J #" + "\n" +
"# J J #" + "\n" +
"# #" + "\n" +
"# ABC DEF GHI #" + "\n" +
"# ABC DEF GHI #" + "\n" +
"# #" + "\n" +
"# #" + "\n" +
"# ABC DEF GHI #" + "\n" +
"# .. #" + "\n" +
"# . S #" + "\n" +
"####################" + "\n";
myReader = new BufferedReader(new StringReader(data));
String line = null;
while ((line = myReader.readLine()) != null)
{
line = line.trim();
if ("".equals(line) || line.startsWith("//"))
{
continue;
}
//width is number of chars in first line
// height depends upon
if (width == 0)
{
width = line.length();
}
lines.add(line);
System.out.println("line=" + line);
}
}
catch (FileNotFoundException e)
{
e.printStackTrace();
throw new RuntimeException(e);
}
catch (IOException e)
{
e.printStackTrace();
throw new RuntimeException(e);
}
// finally close
try
{
if (myReader != null)
{
myReader.close();
}
}
catch (IOException e)
{
e.printStackTrace();
throw new RuntimeException(e);
}
// build level field
int height = lines.size();
fields = new char[height][width];
for (int y = 0; y < height; y++)
{
String line = (String) lines.elementAt(y);
for (int x = 0; x < width; x++)
{
// handle incomplete lines as normal but add boundaries for missing chars
char c = BOUNDARY;
// normally get char from file
if (x < line.length())
{
c = line.charAt(x);
}
fields[y][x] = c;
updateElements(c);
}
}
}
private void updateElements(char aX)
{
String key = "" + aX;
if (elements.contains(key))
{
return;
}
Shape3D myShape3D = getShape3DFor(key);
if (myShape3D != null)
{
elements.put(key, myShape3D);
}
System.out.println("Key=" + key);
}
private Shape3D getShape3DFor(String aKey)
{
// currently we do allow empty spaces
if (" ".equals(aKey))
{
return null;
}
Shape3D myShape3D = new Shape3D();
myShape3D.setGeometry(createPrimitive(aKey));
myShape3D.setAppearance(createAppearance(aKey));
myShape3D.setCompiled(false);
return myShape3D;
}
private Appearance createAppearance(String aKey)
{
Color3f myColor3f = new Color3f((float) Math.random(),
(float) Math.random(),
(float) Math.random());
ColoringAttributes myColoringAttributes = new ColoringAttributes(myColor3f,
ColoringAttributes.NICEST);
Appearance myAppearance = new Appearance();
myAppearance.setColoringAttributes(myColoringAttributes);
return myAppearance;
}
private Geometry createPrimitive(String aKey)
{
if (".".equals(aKey))
{
Point3f[] coords = new Point3f[]
{
new Point3f(-.5f, -.5f, -.5f),
new Point3f(.5f, -.5f, -.5f),
new Point3f(.5f, -.5f, .5f),
};
TriangleArray g = new TriangleArray(coords.length,
GeometryArray.COORDINATES);
g.setCoordinates(0, coords);
return g;
}
// default
Geometry g = Cube.createCubeViaTriangles(0, 0, 0, 1, false);
return g;
}
public Node getFullLevelNode()
{
Group myGroup = new Group();
Node firstNode = (Node) elements.get("" + BOUNDARY);
int maxY = fields.length;
int maxX = fields[0].length;
for (int y = 0; y < maxY; y++)
{
for (int x = 0; x < maxX; x++)
{
// space again nothing to do
if (fields[y][x] == ' ')
{
continue;
}
// move objects to correct place
Transform3D move = new Transform3D();
move.set(new Vector3f(x, 0, y));
TransformGroup myTransformGroup = new TransformGroup(move);
// add the node itself
Node node = firstNode.sharedCopy(((Node) elements.get("" + fields[y][x])));
//Node node = getShape3DFor("" + fields[y][x]);
myTransformGroup.addChild(node);
myGroup.addChild(myTransformGroup);
System.out.println("X=" + x + " Y=" + y);
}
}
return myGroup;
}
}
`
Simply start it (required jars:displaySettings.jar;joal.jar;jogl.jar;junit.jar;log4j.jar;vecmath.jar;xith3d.jar;xith_utilities.jar,
- main class is de.game.pac3d.xith3d.Xith3DFrameold) and you will see a black window. By pressing ‘Cursor down’ you can see a colored line coming in sight. Go forward again and it vanishes …
To see the whole view use ‘Page up’ or ‘Page down’ to see the level from above or below (it’s a 20x20 field)
I am not sure if I am doing something unexpected or if it is an error. That is why I have not filled an IssueZilla but asked in this forum.
