Ich habe die Tutorials bzgl. Auswahl eines Objektes und jme Canvas in einer Swing GUI verbunden und versuche die Steuerung zu optimieren.
Das Problem ist, dass die Maus im JME Fenster nur bei gedrückter Maustaste aktiviert wird, was ja aufgrund der Swing Umgebung erstmal wünschenswert ist, aber aufgrund der Tatsache das Objekte im JME Fenster per linken Mausclick auswählbar sein sollen leider nicht ausreichend ist.
Die Frage daher, wie setze ich die Steuerung auf, um in einer SWING Gui trotzdem durch einfachen linken Mausclick Objekte im jme Canvas anzuclicken ??
An flyCam.setDragToRotate(true) führt kein Weg vorbei, oder ?
Code:
Das Problem ist, dass die Maus im JME Fenster nur bei gedrückter Maustaste aktiviert wird, was ja aufgrund der Swing Umgebung erstmal wünschenswert ist, aber aufgrund der Tatsache das Objekte im JME Fenster per linken Mausclick auswählbar sein sollen leider nicht ausreichend ist.
Die Frage daher, wie setze ich die Steuerung auf, um in einer SWING Gui trotzdem durch einfachen linken Mausclick Objekte im jme Canvas anzuclicken ??
An flyCam.setDragToRotate(true) führt kein Weg vorbei, oder ?
Code:
Java:
import com.jme3.app.SimpleApplication;
import com.jme3.collision.CollisionResult;
import com.jme3.collision.CollisionResults;
import com.jme3.font.BitmapText;
import com.jme3.input.KeyInput;
import com.jme3.input.controls.ActionListener;
import com.jme3.input.controls.KeyTrigger;
import com.jme3.input.controls.MouseButtonTrigger;
import com.jme3.material.Material;
import com.jme3.math.ColorRGBA;
import com.jme3.math.Ray;
import com.jme3.math.Vector3f;
import com.jme3.scene.Geometry;
import com.jme3.scene.Node;
import com.jme3.scene.shape.Box;
import com.jme3.scene.shape.Sphere;
import com.jme3.system.AppSettings;
import com.jme3.system.JmeCanvasContext;
import java.awt.Dimension;
import java.awt.FlowLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
/** Sample 8 - how to let the user pick (select) objects in the scene
* using the mouse or key presses. Can be used for shooting, opening doors, etc. */
public class HelloPicking extends SimpleApplication {
public static void main(String[] args) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
AppSettings settings = new AppSettings(true);
settings.setWidth(640);
settings.setHeight(480);
HelloPicking canvasApplication = new HelloPicking();
canvasApplication.setSettings(settings);
canvasApplication.createCanvas(); // create canvas!
JmeCanvasContext ctx = (JmeCanvasContext) canvasApplication.getContext();
ctx.setSystemListener(canvasApplication);
Dimension dim = new Dimension(640, 480);
ctx.getCanvas().setPreferredSize(dim);
JFrame window = new JFrame("Swing Application");
window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel panel = new JPanel(new FlowLayout()); // a panel
panel.add(ctx.getCanvas()); // add JME canvas
panel.add(new JButton("Swing Component")); // add some Swing
window.add(panel);
window.pack();
window.setVisible(true);
canvasApplication.startCanvas();
}
});
}
Node shootables;
Geometry mark;
@Override
public void simpleInitApp() {
flyCam.setDragToRotate(true);
initCrossHairs(); // a "+" in the middle of the screen to help aiming
initKeys(); // load custom key mappings
initMark(); // a red sphere to mark the hit
/** create four colored boxes and a floor to shoot at: */
shootables = new Node("Shootables");
rootNode.attachChild(shootables);
shootables.attachChild(makeCube("a Dragon", -2f, 0f, 1f));
shootables.attachChild(makeCube("a tin can", 1f,-2f, 0f));
shootables.attachChild(makeCube("the Sheriff", 0f, 1f,-2f));
shootables.attachChild(makeCube("the Deputy", 1f, 0f,-4f));
shootables.attachChild(makeFloor());
}
/** Declaring the "Shoot" action and mapping to its triggers. */
private void initKeys() {
inputManager.addMapping("Shoot",
new KeyTrigger(KeyInput.KEY_SPACE), // trigger 1: spacebar
new MouseButtonTrigger(0)); // trigger 2: left-button click
inputManager.addListener(actionListener, "Shoot");
}
/** Defining the "Shoot" action: Determine what was hit and how to respond. */
private ActionListener actionListener = new ActionListener() {
@Override
public void onAction(String name, boolean keyPressed, float tpf) {
if (name.equals("Shoot") && !keyPressed) {
// 1. Reset results list.
CollisionResults results = new CollisionResults();
// 2. Aim the ray from cam loc to cam direction.
Ray ray = new Ray(cam.getLocation(), cam.getDirection());
// 3. Collect intersections between Ray and Shootables in results list.
shootables.collideWith(ray, results);
// 4. Print the results.
System.out.println("----- Collisions? " + results.size() + "-----");
for (int i = 0; i < results.size(); i++) {
// For each hit, we know distance, impact point, name of geometry.
float dist = results.getCollision(i).getDistance();
Vector3f pt = results.getCollision(i).getContactPoint();
String hit = results.getCollision(i).getGeometry().getName();
System.out.println("* Collision #" + i);
System.out.println(" You shot " + hit + " at " + pt + ", " + dist + " wu away.");
}
// 5. Use the results (we mark the hit object)
if (results.size() > 0){
// The closest collision point is what was truly hit:
CollisionResult closest = results.getClosestCollision();
// Let's interact - we mark the hit with a red dot.
mark.setLocalTranslation(closest.getContactPoint());
rootNode.attachChild(mark);
} else {
// No hits? Then remove the red mark.
rootNode.detachChild(mark);
}
}
}
};
/** A cube object for target practice */
protected Geometry makeCube(String name, float x, float y, float z) {
Box box = new Box(new Vector3f(x, y, z), 1, 1, 1);
Geometry cube = new Geometry(name, box);
Material mat1 = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
mat1.setColor("Color", ColorRGBA.randomColor());
cube.setMaterial(mat1);
return cube;
}
/** A floor to show that the "shot" can go through several objects. */
protected Geometry makeFloor() {
Box box = new Box(new Vector3f(0,-4,-5), 15,.2f,15);
Geometry floor = new Geometry("the Floor", box);
Material mat1 = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
mat1.setColor("Color", ColorRGBA.Gray);
floor.setMaterial(mat1);
return floor;
}
/** A red ball that marks the last spot that was "hit" by the "shot". */
protected void initMark() {
Sphere sphere = new Sphere(30, 30, 0.2f);
mark = new Geometry("BOOM!", sphere);
Material mark_mat = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
mark_mat.setColor("Color", ColorRGBA.Red);
mark.setMaterial(mark_mat);
}
/** A centred plus sign to help the player aim. */
protected void initCrossHairs() {
guiNode.detachAllChildren();
guiFont = assetManager.loadFont("Interface/Fonts/Default.fnt");
BitmapText ch = new BitmapText(guiFont, false);
ch.setSize(guiFont.getCharSet().getRenderedSize() * 2);
ch.setText("+"); // crosshairs
ch.setLocalTranslation( // center
settings.getWidth()/2 - guiFont.getCharSet().getRenderedSize()/3*2,
settings.getHeight()/2 + ch.getLineHeight()/2, 0);
guiNode.attachChild(ch);
}
}
