I'm wondering if it's possible to do something in processing java (or native java idk much about it though) where you can get rid of the windows gui elements of the window (I'm using windows 7). I want it to be able to look like when you boot up a program like eclipse or visual studio and it has like a rectangle in the middle of the screen, but you can't x out of the program or minimize it, etc. is that possible even or would I have to use another java library? Thanks.
Yes, you can. I had no idea, but you totally can! There's some class juggling involved, though, but it's all fairly simple.
Here's a code snippet for you to try and tinker with the principle:
import java.awt.Frame;
import processing.awt.PSurfaceAWT;
import processing.awt.PSurfaceAWT.SmoothCanvas;
void setup() {
size(200, 200);
}
PSurface initSurface() {
PSurface pSurface = super.initSurface();
PSurfaceAWT awtSurface = (PSurfaceAWT) surface;
SmoothCanvas smoothCanvas = (SmoothCanvas) awtSurface.getNative();
Frame frame = smoothCanvas.getFrame();
frame.setUndecorated(true);
return pSurface;
}
void draw() {
background(0);
ellipse(mouseX, mouseY, 20, 20);
}
Have fun!
Related
I have a particle system explosion that I want to play when the player dies. The idea that is that everything else pauses but the explosion continues, like the Pacman animation when you die (everything freezes and the pacman death animation plays).
Trouble is, it won't work. I know Time.timeScale = 0 pauses everything, and I've tried using this script to combat that, but it doesn't seem to be working:
void Update()
{
if (Time.timeScale < 0.01f)
{
particleSystem.Simulate(Time.deltaTime, true, false);
}
}
I have also tried this, but it doesn't work either:
private ParticleSystem pSystem;
public void Awake()
{
pSystem = gameObject.GetComponent<ParticleSystem>();
}
public void Play()
{
pSystem.Simulate(Time.unscaledDeltaTime,true,true);
}
public void Update()
{
pSystem.Simulate(Time.unscaledDeltaTime,true,false);
}
I have tried this code with a script that is attached to my explosion particle system prefab, which is instantiated at the player's position when you die.
Thanks!
UPDATE:
Turns out I had tried using particleSystem.Simulate(Time.unscaledDeltaTime, true, false);, but I was calling it in FixedUpdate() rather than Update().
However, the Asteroid Base post below posted by Garfty is really interesting and is probably worth doing in the long run!
One way you could do it is by using Time.unscaledDeltaTime
Another way you could approach something like this is by creating your own time manager, but it requires some discipline to stick to. The people at Asteroid Base wrote a nice article on something like this here.
I hope this helps!
so I'm developing a game for android in LibGDX and I've stumbled upon a problem: I have a scene with an image in it and I want to be able to click/touch the image and make stuff happen after doing so.
I've been trying to google a solution for the past day but I keep on missing something vital. Here's my code:
public class ScreenSplash implements Screen {
private Texture textureGlobe = new Texture(Gdx.files.internal("graphics/splash.png"));
private Image imageGlobe = new Image((new TextureRegion(textureGlobe)));
public ScreenSplash() {
imageGlobe.addListener(new InputListener() {
public boolean touchDown(InputEvent event, float x, float y, int pointer, int button) {
Gdx.app.log(Game.LOG, "image clicked");
return true;
}
});
stageGame.addActor(imageGlobe);
}
...
}
I've also heard that I'm supposed to put this somewhere:
Gdx.input.setInputProcessor(inputProcessor);
But I don't really know what to do with it.
Your Stage is your InputProcessor so do something like Gdx.input.setInputProcessor(stageGame);. The Stage will route the events to the actors.
Ah, I've found out what the problem was.
I imported java.awt.event.InputEvent instead of com.badlogic.gdx.scenes.scene2d.InputEvent and the touchDown function wasn't properly overriden because of this.
I tried following code for draw a single line horizontal line but it is not working. i am not getting what is the problem.
HorizontalFieldManager horline = new HorizontalFieldManager()
{
protected void paint(Graphics graphics)
{
super.paint(graphics);
graphics.setColor(Color.RED);
graphics.drawLine(5, 21,10, 20);
}
};
There's at least a couple problems here:
Extent
The extent of a field (or manager) is basically the size of that field on screen. This size is normally set by a Field object in its layout() method, or by a Manager object in its sublayout() method. The problem is that your HorizontalFieldManager does not override these methods to set the size (by calling setExtent()), and it doesn't look like you add any fields to the manager. So, I believe your horline manager object simply has a size of {0, 0}. Drawing outside its extent doesn't do anything.
Manager vs Field
Manager classes are containers for fields. In this case, all you have is a line. I would definitely not use a Manager (including HorizontalFieldManager) for this, since you're not putting any fields into it, and there is overhead to adding Manager objects. Use a lighter-weight Field, or maybe even modify the paint() or paintBackground() method on whatever class contains this code ... you don't show us that, so I can't say for sure.
If you want to represent the line with a Field, then this will work:
Field line = new Field() {
protected void layout(int width, int height) {
setExtent(20, 21);
}
protected void paint(Graphics g) {
int oldColor = g.getColor();
g.setColor(Color.RED);
g.drawLine(5, 21,10, 20);
g.setColor(oldColor);
}
};
add(line);
Note that I am setting the extent to width=20, height=21, because those are the maximum coordinates you pass to drawLine(). Also, because your y values are 20 and 21, this isn't actually a truly horizontal line.
add()
This might have simply been left out of the code you show to keep the question short, but whether you use a Manager or a Field, you do need to remember to call add() for your field/manager object. Objects created, but not added to a screen, will never show. In your case, the setExtent() problem would also have caused this problem.
Update:
As Dinesh shows in his answer, you could also solve the problem by using SeparatorField. However, I believe that only gives you purely horizontal/vertical lines. Because of the coordinates in your code, I wasn't sure if you needed the ability to draw lines of any orientation ... if you do, then overriding paint() is necessary. If not, use SeparatorField ... but hopefully, you learned something from this answer, too :).
Use this
HorizontalFieldManager horline = new HorizontalFieldManager()
{
protected void paint(Graphics graphics)
{
super.paint(graphics);
graphics.setColor(Color.RED);
}
};
horline.add(new SeparatorField(SeparatorField.LINE_HORIZONTAL|SeparatorField.VISUAL_STATE_FOCUS));
I am a beginner in java(fx).
How do you get the mouse location in x and y in JavaFX? I tried using AWT's MouseInfo(also imported it), but it's not working. I also saw the code for it in Ensembles(that dragging the ball-window in "advanced stage", that's what I need to do, drag my undecorated JavaFX stage), but it also doesn't work. I am using FXML with controller, and I guess that's the main problem. Should I switch back to the single-file simple JavaFX? I know FXML is better for laying out the UI, but I can't get many of such codes to work. Or do I need some other sort of code for my controller? Please give proper codes with comments wherever possible.
If you need a bit of my code to inspect, feel free to ask.
There are a few items in your question - I'll tackle them one at a time.
How do you get the mouse location in x and y in JavaFX?
Add a mouse event handler to the appropriate JavaFX component that you want to track the mouse location in. A JavaFX mouse event will report multiple different kinds of co-ordinates. The x and y co-ordinates are relative to the top left corner of the node whose location is being monitored. The sceneX and sceneY co-ordinates are relative to the scene's top left 0,0 co-ordinates. The screenX and screenY co-ordinates are relative to the top left 0,0 co-ordinates of the current screen.
These co-ordinates are documented in the MouseEvent documentation. There is extra information in understanding co-ordinate systems in the Node and Scene documentation.
import javafx.application.Application;
import static javafx.application.Application.launch;
import javafx.event.*;
import javafx.scene.*;
import javafx.scene.control.*;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.VBox;
import javafx.stage.*;
public class MouseLocationReporter extends Application {
private static final String OUTSIDE_TEXT = "Outside Label";
public static void main(String[] args) { launch(args); }
#Override public void start(final Stage stage) {
final Label reporter = new Label(OUTSIDE_TEXT);
Label monitored = createMonitoredLabel(reporter);
VBox layout = new VBox(10);
layout.setStyle("-fx-background-color: cornsilk; -fx-padding: 10px;");
layout.getChildren().setAll(
monitored,
reporter
);
layout.setPrefWidth(500);
stage.setScene(
new Scene(layout)
);
stage.show();
}
private Label createMonitoredLabel(final Label reporter) {
final Label monitored = new Label("Mouse Location Monitor");
monitored.setStyle("-fx-background-color: forestgreen; -fx-text-fill: white; -fx-font-size: 20px;");
monitored.setOnMouseMoved(new EventHandler<MouseEvent>() {
#Override public void handle(MouseEvent event) {
String msg =
"(x: " + event.getX() + ", y: " + event.getY() + ") -- " +
"(sceneX: " + event.getSceneX() + ", sceneY: " + event.getSceneY() + ") -- " +
"(screenX: " + event.getScreenX()+ ", screenY: " + event.getScreenY() + ")";
reporter.setText(msg);
}
});
monitored.setOnMouseExited(new EventHandler<MouseEvent>() {
#Override public void handle(MouseEvent event) {
reporter.setText(OUTSIDE_TEXT);
}
});
return monitored;
}
}
I tried using AWT's MouseInfo(also imported it), but it's not working.
Don't do this. Mixing different graphical toolkits (for example Swing/AWT and JavaFX) is an advanced topic. In general, if you are writing a JavaFX application, avoid importing anything from the java.awt namespace and the javax.swing namespace. You only really need to use those if you have a large, existing Swing based application or framework that you need to inter-operate with your JavaFX application. In this case, you don't have that situation.
I also saw the code for it in Ensembles(that dragging the ball-window in "advanced stage", that's what I need to do, drag my undecorated JavaFX stage), but it also doesn't work.
I tried the Ensemble Advanced Stage sample and dragging that stage around worked for me.
Another sample for dragging an undecorated stage in JavaFX is in the answer to How to draw a clock with JavaFX 2? which has associated sample code. The method used to make the undecorated stage draggable for the clock sample is:
/** makes a stage draggable using a given node */
public static void makeDraggable(final Stage stage, final Node byNode) {
final Delta dragDelta = new Delta();
byNode.setOnMousePressed(new EventHandler<MouseEvent>() {
#Override public void handle(MouseEvent mouseEvent) {
// record a delta distance for the drag and drop operation.
dragDelta.x = stage.getX() - mouseEvent.getScreenX();
dragDelta.y = stage.getY() - mouseEvent.getScreenY();
byNode.setCursor(Cursor.MOVE);
}
});
byNode.setOnMouseReleased(new EventHandler<MouseEvent>() {
#Override public void handle(MouseEvent mouseEvent) {
byNode.setCursor(Cursor.HAND);
}
});
byNode.setOnMouseDragged(new EventHandler<MouseEvent>() {
#Override public void handle(MouseEvent mouseEvent) {
stage.setX(mouseEvent.getScreenX() + dragDelta.x);
stage.setY(mouseEvent.getScreenY() + dragDelta.y);
}
});
byNode.setOnMouseEntered(new EventHandler<MouseEvent>() {
#Override public void handle(MouseEvent mouseEvent) {
if (!mouseEvent.isPrimaryButtonDown()) {
byNode.setCursor(Cursor.HAND);
}
}
});
byNode.setOnMouseExited(new EventHandler<MouseEvent>() {
#Override public void handle(MouseEvent mouseEvent) {
if (!mouseEvent.isPrimaryButtonDown()) {
byNode.setCursor(Cursor.DEFAULT);
}
}
});
}
I am using FXML with controller, and I guess that's the main problem. Should I switch back to the single-file simple JavaFX? I know FXML is better for laying out the UI, but I can't get many of such codes to work.
Lack of understanding and familiarity with the underlying JavaFX APIs is probably your main problem rather than use of FXML. However the additional complexity fxml implies together with the lighter documentation and samples for it on the web may be contributing to your hardships. If use of FXML is making it difficult for you to understand how to get some JavaFX functions to work, I advise to stop using FXML for now. Code the logic by hand using the Java APIs and refer to the Oracle JavaFX tutorials and the Ensemble sample code when you encounter things which are difficult for you.
Once you are comfortable coding directly to the JavaFX API, switch back to using FXML for larger projects which contain many GUI elements. The FXML elements and attributes themselves are built almost completely upon reflection of the standard JavaFX APIs. So, if you understand the core JavaFX APIs, you also understand almost everything about FXML.
Please do not post follow up comments to this answer (as this answer is long enough as it is). If you have new questions, create a new question (one question per question).
What about using Robot for that purpose ?
http://docs.oracle.com/javase/1.5.0/docs/api/java/awt/Robot.html
Using Robots, it is different from posting event to AWT event queue. Events are generated in the native event queue. Actually, with Robot.mouseMove you will not only set mouse position and not only get position.
For getting mouse position, you may stick to MouseInfo
import java.awt.MouseInfo;
// get the mouse's position
Point p = MouseInfo.getPointerInfo().getLocation();
It's not working: are you with Mac ? Which is your version of JavaFX ? seems to be issues corrected for FX8. For mac only, you may use
com.sun.glass.ui.Robot robot =
com.sun.glass.ui.Application.GetApplication().createRobot();
// getPosition of the mouse in Mac
int x = robot.getMouseX();
int y = robot.getMouseY();
JavaFx 8 WindowEvent doesn't provide the (x,y) location of the mouse, unfortunately. I solved this (and it works fine) by using the AWT MouseInfo like this:
Tooltip t = new Tooltip();
Tooltip.install(yournode, t);
t.setOnShowing(ev -> {// called just prior to being shown
Point mouse = java.awt.MouseInfo.getPointerInfo().getLocation();
Point2D local = yournode.screenToLocal(mouse.x, mouse.y);
// my app-specific code to get the chart's yaxis value
// then set the text as I want
double pitch = yaxis.getValueForDisplay(local.getY()).doubleValue();
double freq = AudioUtil.pitch2frequency(pitch);
t.setText(String.format("Pitch %.1f: %.1f Hz %.1f samples", pitch, freq, audio.rate / freq));
});
I wrote a wxPython program that I am translating to wxWidgets. The program has a scrolled window that displays an image. Following Rappin, wxPython In Action (Listing 12.1), I used a StaticBitmap within a panel. While surfing the latest wxWidgets documentation, I found a dire warning that wxStaticBitmap should only be used for very small images. It says, "... you should use your own control if you want to display larger images portably." Okay. Show me. I don't have my "own control."
Was Rappin wrong, or is the documentation out of date?
The question - a newbie one, no doubt - is what is the right way to do a simple image-view window in wxWidgets? A drop-in replacement for wxStaticBitmap would be nice. I looked into the "image" program in the wxWidgets "samples" directory. It's as long a War and Peace. Surely there must be a canned class or a simple recipe.
Don't let the size of the "image" sample fool you, only a few lines of code are necessary to do what you want.
Search for the MyImageFrame class in the image.cpp file, it is nothing more than a class with a private bitmap field, a custom constructor to set the bitmap and the window client size, and an event handler for EVT_PAINT:
void OnPaint(wxPaintEvent& WXUNUSED(event))
{
wxPaintDC dc( this );
dc.DrawBitmap( m_bitmap, 0, 0, true /* use mask */ );
}
Since you don't want a frame class here's your recipe: You create a simple descendant of wxWindow that has a similar constructor, paint handler and duplicates the methods of wxStaticBitmap that you use in your code. Maybe simply one method to set a new bitmap and resize the control to the new bitmap dimensions.
// A scrolled window for showing an image.
class PictureFrame: public wxScrolledWindow
{
public:
PictureFrame()
: wxScrolledWindow()
, bitmap(0,0)
{;}
void Create(wxWindow *parent, wxWindowID id = -1)
{
wxScrolledWindow::Create(parent, id);
}
void LoadImage(wxImage &image) {
bitmap = wxBitmap(image);
SetVirtualSize(bitmap.GetWidth(), bitmap.GetHeight());
wxClientDC dc(this);
PrepareDC(dc);
dc.DrawBitmap(bitmap, 0, 0);
}
protected:
wxBitmap bitmap;
void OnMouse(wxMouseEvent &event) {
int xx,yy;
CalcUnscrolledPosition(event.GetX(), event.GetY(), &xx, &yy);
event.m_x = xx; event.m_y = yy;
event.ResumePropagation(1); // Pass along mouse events (e.g. to parent)
event.Skip();
}
void OnPaint(wxPaintEvent &event) {
wxPaintDC dc(this);
PrepareDC(dc);
dc.DrawBitmap(bitmap, 0,0, true);
}
private:
DECLARE_EVENT_TABLE()
};
BEGIN_EVENT_TABLE(PictureFrame,wxScrolledWindow)
EVT_PAINT(PictureFrame::OnPaint)
EVT_MOUSE_EVENTS(PictureFrame::OnMouse)
END_EVENT_TABLE()