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.
Related
I imported the standard characters package into a fresh Unity project, and then dragged a 3rd person character controller prefab and dropped it into the scene.
However, I cannot seem to figure out which variable to modify to get the avatar to walk!
I keep changing the speed-related settings, but the character always seems to be running when I press the key W.
I would appreciate some help to get me started in this...
I created example code for you. You can see how It works and set its own. If you show your character controller codes I try to be more help.
There is two step;
1. Set your character animation controller like this.
Call animation from your character controller script like this.
using UnityEngine;
using System.Collections;
public class Test : MonoBehaviour
{
private Animator anim;
float yourSpeed;
void Awake ()
{
anim = GetComponent<Animator> ();
}
void Update ()
{
if (Input.GetKeyDown (KeyCode.W) && yourSpeed > 100f)
{ //I dont know how works your speed.
anim.SetTrigger ("RunAnim");
}
else if (Input.GetKeyDown (KeyCode.W))
{
anim.SetTrigger ("WalkAnim");
}
else
{
anim.SetTrigger("IdleAnim");
}
}
}
Also you can watch official unity tutorial.
I am new to game development but familiar with programming languages. I have started using Flixel and have a working Breakout game with score and lives.
What I am trying to do is add a Start Screen before actually loading the game.
I have a create function that adds all the game elements to the stage:
override public function create():void
// all game elements
{
How can I add this pre-load Start Screen? I'm not sure if I have to add in the code to this create function or somewhere else and what code to actually add.
Eventually I would also like to add saving, loading, options and upgrades too. So any advice with that would be great.
Here is my main game.as:
package
{
import org.flixel.*;
public class Game extends FlxGame
{
private const resolution:FlxPoint = new FlxPoint(640, 480);
private const zoom:uint = 2;
private const fps:uint = 60;
public function Game()
{
super(resolution.x / zoom, resolution.y / zoom, PlayState, zoom);
FlxG.flashFramerate = fps;
}
}
}
Thanks.
The way that I usually do it is with a different FlxState - I use one for "Menu", the game itself, and the Game Over screen.
So make a new class that extends FlxState, call it maybe "MenuState" and then say:
super(resolution.x / zoom, resolution.y / zoom, MenuState, zoom);
Inside MenuState, on a button press or something, say:
FlxG.switchState(PlayState);
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'm setting out to create a weather model display tool (web application), and from what I've seen, I'm really liking the idea of using Google Web Tools, and especially the SmartGWT toolkit. My one biggest sticking point at this point is finding some way to create a sort of image "looper" (displaying all images in a particular "set" one after another, not unlike a slide show). For reference, I need functionality (at least on a basic level) similar to this: http://rapidrefresh.noaa.gov/hrrrconus/jsloop.cgi?dsKeys=hrrr:&runTime=2012053007&plotName=cref_sfc&fcstInc=60&numFcsts=16&model=hrrr&ptitle=HRRR%20Model%20Fields%20-%20Experimental&maxFcstLen=15&fcstStrLen=-1&resizePlot=1&domain=full&wjet=1 (though it certainly need not be exactly like that).
Does anyone know of (ideally) some sort of GWT module that can do image looping? Or if not, does it sound like something an intermediate programmer could figure out without too much trouble (I'm willing to accept a challenge), even if I've never explicitly used GWT before? I'm sure I could whip together something that pulls each image in as it goes through a loop, but prefetching them would be even more ideal.
Please comment if you need clarification on anything!
As far as I'm aware there's not a pre-fab solution to do this, although maybe SmartGWT has something I don't know about. In any case, it won't be too hard to roll your own. Here's some code to get you started:
public class ImageLooper extends Composite {
// List of images that we will loop through
private final String[] imageUrls;
// Index of the image currently being displayed
private int currentImage = 0;
// The image element that will be displayed to the user
private final Image image = new Image();
// The Timer provides a means to execute arbitrary
// code after a delay or at regular intervals
private final Timer imageUpdateTimer = new Timer() {
public void run() {
currentImage = (currentImage + 1) % images.length;
image.setUrl(imageUrls[currentImage]);
}
}
// Constructor. I'll leave it to you how you're going to
// build your list of image urls.
public ImageLooper(String[] imageUrls) {
this.imageUrls = imageUrls;
// Prefetching the list of images.
for (String url : imageUrls)
Image.prefetch(url);
// Start by displaying the first image.
image.setUrl(imageUrls[0]);
// Initialize this Composite on the image. That means
// you can attach this ImageLooper to the page like you
// would any other Widget and it will show up as the
// image.
initWidget(image);
}
// Call this method to start the animation
public void playAnimation() {
// Update the image every two seconds
imageUpdateTimer.scheduleRepeating(2000);
}
// Call this method to stop the animation
public void stopAnimation() {
imageUpdateTimer.cancel();
}
}
One annoying thing with this implementation is that you have no way of knowing when your list of images has finished loading; Image.prefetch doesn't have a callback to help you here.
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()