So I’m following a tutorial for a project I want to work on. The program has a private spacial getSpacial that gives me an illegal start of expression. I’ve tried everything I can to fix it but it’s still giving me problems:
private Spatial getSpatial(String name) {
}
anyone know why? thanks
Welcome. You may show the Code segment throwing the Exception and the Exception Message + StackTrace?
(The shown Method should not work, since it returns no Spatial, but I’m not sure about the Error you describe.)
Thank you for the welcome.
Exception in thread “main” java.lang.ExceptionInInitializerError
Caused by: java.lang.RuntimeException: Uncompilable code - illegal start of expression
at mygame.Main.(Main.java:1)
/Users/davidlopez/Library/Caches/jmonkeyplatform/dev/executor-snippets/run.xml:111: The following error occurred while executing this line:
/Users/davidlopez/Library/Caches/jmonkeyplatform/dev/executor-snippets/run.xml:68: Java returned: 1
BUILD FAILED (total time: 4 seconds)
private Spatial getSpatial(String name) {
Node node = new Node(name);
// load picture
Picture pic = new Picture(name);
Texture2D tex = (Texture2D) assetManager.loadTexture("Textures/"+name+".png");
pic.setTexture(assetManager,tex,true);
// adjust picture
float width = tex.getImage().getWidth();
float height = tex.getImage().getHeight();
pic.setWidth(width);
pic.setHeight(height);
pic.move(-width/2f,-height/2f,0);
// add a material to the picture
Material picMat = new Material(assetManager, "Common/MatDefs/Gui/Gui.j3md");
picMat.getAdditionalRenderState().setBlendMode(BlendMode.AlphaAdditive);
node.setMaterial(picMat);
// set the radius of the spatial
// (using width only as a simple approximation)
node.setUserData("radius", width/2);
// attach the picture to the node and return it
node.attachChild(pic);
return node;
}
This error means, there is a Syntax error, for example using a wrong keyword or wrong closing brackets. The posted snipped is syntactic correct. Please post the whole class file, the mistake should be very easy to find.
import com.jme3.app.SimpleApplication;
import com.jme3.material.Material;
import com.jme3.material.RenderState.BlendMode;
import com.jme3.math.ColorRGBA;
import com.jme3.math.Vector3f;
import com.jme3.renderer.RenderManager;
import com.jme3.scene.Geometry;
import com.jme3.scene.Node;
import com.jme3.scene.shape.Box;
import com.jme3.texture.Texture2D;
import com.jme3.ui.Picture;
/**
* This is the Main Class of your Game. You should only do initialization here.
* Move your Logic into AppStates or Controls
* @author normenhansen
*/
public class Main extends SimpleApplication {
public static void main(String[] args) {
Main app = new Main();
app.start();
}
@Override
public void simpleInitApp() {
// setup camera for 2D games
cam.setParallelProjection(true);
cam.setLocation(new Vector3f(0,0,0.5f));
getFlyByCamera().setEnabled(false);
// turn off stats view (you can leave it on, if you want)
setDisplayStatView(false);
setDisplayFps(false);
Box b = new Box(1, 1, 1);
Geometry geom = new Geometry("Box", b);
Material mat = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
mat.setColor("Color", ColorRGBA.Blue);
geom.setMaterial(mat);
rootNode.attachChild(geom);
private Spatial getSpatial(String name) {
Node node = new Node(name);
// load picture
Picture pic = new Picture(name);
Texture2D tex = (Texture2D) assetManager.loadTexture("Textures/"+name+".png");
pic.setTexture(assetManager,tex,true);
// adjust picture
float width = tex.getImage().getWidth();
float height = tex.getImage().getHeight();
pic.setWidth(width);
pic.setHeight(height);
pic.move(-width/2f,-height/2f,0);
// add a material to the picture
Material picMat = new Material(assetManager, "Common/MatDefs/Gui/Gui.j3md");
picMat.getAdditionalRenderState().setBlendMode(BlendMode.AlphaAdditive);
node.setMaterial(picMat);
// set the radius of the spatial
// (using width only as a simple approximation)
node.setUserData("radius", width/2);
// attach the picture to the node and return it
node.attachChild(pic);
return node;
}
@Override
public void simpleUpdate(float tpf) {
//TODO: add update code
}
@Override
public void simpleRender(RenderManager rm) {
//TODO: add render code
}
}
I assumed there was but i’m new to spatials and how they work but this is a 2d game so node is supposed to be my best bet.
rootNode.attachChild(geom);
private Spatial getSpatial(String name) {
You’re missing the closing-bracket of simpleInitApp.
You will may use an IDE with on-the-fly syntax checking like Netbeans or Eclipse?
thank you; i somehow didnt see that missing bracket. i have netbeans, should I use that?
also, what is the best way about approaching adding the player? the tutorial uses this method:
player.setUserData("alive",true);
player.move(settings.getWidth()/2, settings.getHeight()/2, 0);
guiNode.attachChild(player);
```
but i get an error saying it cannot find the symbol player because i have not started itYes, Netbeans is fine. If you don’t use it yet, you will may use the JME3 SDK. That is a modified Netbeans with additional functions like a scene composer for 3D scenes.
Since the tutorial uses the guiNode, I assume “player” should be a Picture type. Loading pictures is described here:
If it should be a Model, read this instead:
Yeah, especially if you are a beginner, well, anyone really that wants to be productive, use IDE. Any really. If you are a total beginner in Java, 3D and jME, you are in for some tough times. Not impossible of course. And for this target group I of course recommend jME SDK also.