I'm using the touchDown method (InputProcessor)to move a sprite in the x-axis, i also want it to be moved using the accelerometer.
Is there a way in libGDX to toggle between the two methods and can they both be implemented together (so that the movement is done using the accelerometer as long as the screen is not touched or will they conflict with each other when phone is tilted and screen is touched)
You can do polling.
if (Gdx.input.isTouched()) {
// screen touched logic
} else {
// check for accelerometer
float accelX = Gdx.input.getAccelerometerX();
float accelY = Gdx.input.getAccelerometerY();
float accelZ = Gdx.input.getAccelerometerZ();
// do stuff with the accel(s)
}
Related
I am trying to implement a HUD stage on top of the current stage. I am able to render and draw the HUD stage but its buttons' touch events are not responding.
I am calling my drawHUD() from my draw() method of GameScreen. Code for drawHUD() is
public void drawHud(int scoreVal){
Hud.this.getCamera().update();
Hud.this.hudSpriteBatch.setProjectionMatrix(Hud.this.getCamera().combined);
hudSpriteBatch.begin();
scoreStr = "Score: " + scoreVal;
glyphLayout.setText(scoreFont, scoreStr);
halfWidth = glyphLayout.width/2;
halfHeight = glyphLayout.height/2;
scoreFont.draw(hudSpriteBatch, scoreStr, EatGame.CAMERA_WIDTH/2 - halfWidth, EatGame.CAMERA_HEIGHT - halfHeight);
hudSpriteBatch.end();
}
I have added a listener to my pauseBtn like this when creating my HUD
pauseBtn.addListener(new InputListener() {
#Override
public boolean touchDown (InputEvent event, float x, float y, int pointer, int button) {
System.out.println("PauseBtn Touched");
return false;
}
}
I have also tested by setting the bounds of the button, but it is not responding to events.
Thanks for reading and helping.
Usually you use the scene2d API for implementing buttons and stuff like that. The Stage class is responsible for handling the events on the correct actor. Look at the Stage#touchDown() how they do it. If you want to implement this on your own, you would have to implement a global touch-listener and check, if the coordinates are inside the bounds of the button and then call fire on the button with the correct Event object.
I would highly recommend to use the scene2d api, its far more easier then to write your own hit-detection-firing-event-system.
I had to use InputMultiplexer for taking input events from both the stages. I have done this that way.
InputMultiplexer multiplexer = new InputMultiplexer();
multiplexer.addProcessor(GameScreen.this);
multiplexer.addProcessor(hud);
Gdx.input.setInputProcessor(multiplexer);
This way it will receive events from both the stages. GameScreen and Hud are Stages.
I'm trying to implement a collision detector between my Player (Actor) and my Obstacle (Actor too), and I wonder what's the best way to perform a collision detection between them. I see some users saying that they create a Rectangle object in the class and update its bounds every frame, but I don't know if this is the best way to perform this (I'm also trying to make this, but my collision detector method triggers before my Player touches the Obstacle).
This is what I'm trying to check:
public boolean touchedWall() {
// Loop for the obstacles
for (Obstacle obstacle : this.world.getObstacles()) {
// Check if player collided with the wall
if (this.bounds.overlaps(obstacle.getBounds())) {
Gdx.app.log(Configuration.TAG, "collided with " + obstacle.getName());
return true;
}
}
return false;
}
And this is where the method triggers (it should trigger when the Player bounds hit the wall):
I figured out! Instead of using this.bounds.set(x, y, width, height), I was using this.bounds.set(x, y, height, width) like this:
this.bounds.set(this.getX(), this.getY(), this.getHeight(), this.getWidth());
Sorry for my mistake.
i have been having trouble trying to set up wraparound in LibGDX using box2D, for example i want my player to appear at the left side of the screen after exiting the right side, but its not working here is my code:
public void setWraparound(){
//if player goes out of bounds vertically
if(body.getPosition().x < 0){
body.setTransform(new Vector2(4.8f, body.getPosition().y),body.getAngle());
}else if(body.getPosition().x > 4.8f){
body.setTransform(new Vector2(0, body.getPosition().y), body.getAngle());
}
//if player goes out of bounds Horizontally
if(body.getPosition().y < 0){
body.setTransform(new Vector2(body.getPosition().x,8f), body.getAngle());
}else if(body.getPosition().y > 8f){
body.setTransform(new Vector2(body.getPosition().x,0), body.getAngle());
}
}
Then i call the method in my GameStage class like this:
public GameStage() {
setUpWorld();
setupCamera();
setupTouchControls();
player.setWraparound();
renderer = new Box2DDebugRenderer();
}
anyone to help me out?
The place where you call your setWraparound method is wrong. You need to call it after a collision of the player with screen border happens. I suggest you do the following
Create static bodies for each screen border (you could use for example EdgeShape for that)
Add a ContactListener to your box2D world and check in the beginContact method if player & wall do touch.
Now after touch was detected call your method setWraparound
Alternatively you could create a Sensor that matches the screen size and detect if player touches the sensor borders. Or you could just check every frame your player's x/y positions and see if they are out of the screen, but it is better to use box2D collision detection.
A simple question: how could I pick up a sprite in libgdx? By this, I mean that when I click / touch the screen, it checks which (if any) sprite is clicked.
if(Gdx.input.justTouched())
{
cam.unproject(touchPoint.set(Gdx.input.getX(),Gdx.input.getY(), 0));
if(Assets.playButton.getBoundingRectangle().contains(touchPoint.x,touchPoint.y ))
{
// do what u want to do when image is touched
}
Well Assets.playButton is actually a sprite type object
getBoundingRectangle() gives u the rectangle enclosed by the sprite
P.S:- touchPoint is a Vector3 type object
I am beginning to write a game in LibGDX, only just beginning. I have got a basic tile map loaded, a player sprite and can move the character around and the screen (camera) scrolls around - perfect.
I have two overlayed textures in the bottom right of the screen, a left and right arrow, which are used as the joypad to control the character. I position these in relation to the players.x position, which is always fixed to the centre of the screen. Cool so far .... As below:
/////////////////////////////////////////////////////////////////
private void renderJoypad(float deltaTime)
{
batch.draw(Assets.leftJoypad, blockman.position.x-14, 1, 3, 3);
batch.draw(Assets.rightJoypad, blockman.position.x-9, 1, 3, 3);
}
I am now trying to put the player's score in the top left of the screen. The score is made of a Bitmap font, as below.
font = new BitmapFont(Gdx.files.internal("fonts/minecrafter.fnt"),Gdx.files.internal("fonts/minecrafter.png"),false);
font.setScale(0.02f);
In my render() method I cam calling some other methods to update, like the positions of the
leftJoypad etc, as in renderJoypad(). I am also calling my draw font method to update the position of the score, however, when I scroll it is all jerky, and sometimes it shows less characters than there should be.
public void drawScore(float deltaTime)
{
font.draw(batch, "00000", blockman.position.x, 10);
}
I believe that I need to place the score (and any other on screen texts, HUD etc) into a stage, but I cannot understand how to get it working with my existing code.
My show method is as follows:
public void show()
{
//load assets class to get images etc
Assets Assets = new Assets();
//start logging Framerate
Gdx.app.log( GameScreen.LOG, "Creating game" );
fpsLogger = new FPSLogger();
//set the stage - bazinga
Gdx.input.setInputProcessor(stage);
//stage.setCamera(camera);
//stage.setViewport(480, 360, false);
batch = new SpriteBatch();
//load the Joypad buttons
loadJoypad();
//background image
loadBackground();
//sounds
jumpSound = Gdx.audio.newSound(Gdx.files.internal("sounds/slime_jump.mp3"));
//LOAD block man here
// load the map, set the unit scale to 1/16 (1 unit == 16 pixels)
loadMap();
//draw the score
font = new BitmapFont(Gdx.files.internal("fonts/minecrafter.fnt"),Gdx.files.internal("fonts/minecrafter.png"),false);
font.setScale(0.02f);
// create an orthographic camera, shows us 30x20 units of the world
camera = new OrthographicCamera();
camera.setToOrtho(false, 30, 20);
camera.update();
// create the Blockman we want to move around the world
blockman = new Blockman();
blockman.position.set(25, 8);
}
and my render() method is as follows:
public void render(float delta)
{
// get the delta time
float deltaTime = Gdx.graphics.getDeltaTime();
stage.act(deltaTime);
stage.draw();
// clear the screen
Gdx.gl.glClearColor(0.3f, 0.3f, 0.3f, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
renderBackground(deltaTime);
batch = renderer.getSpriteBatch();
//updateBlockman(deltaTime);
blockman.update(deltaTime);
// let the camera follow the blockMan, x-axis only
camera.position.x = blockman.position.x;
camera.update();
// set the tile map rendere view based on what the
// camera sees and render the map
renderer.setView(camera);
renderer.render();
//start the main sprite batch
batch.begin();
// render the blockMan
renderBlockman(deltaTime);
renderJoypad(deltaTime);
drawScore(deltaTime);
batch.end();
fpsLogger.log();
}
I have tried to change the way things work with relation to the Spritebatch etc and just cannot seem to get it working as I require.
Can anyone suggest how I may approach getting a stage and actors to work, or a second camera or something to help me achieve a fixed score display in the corner.
Do I need to use Scene 2D or something - aahhh! My head is exploding....
I look forward and thank you in advance.
Regards
James
I have a couple of suggestions:
Check to see if you have setUseIntegerPositions set to true
(the default) when you draw your font. If you do, and you're scaling
it, then it can cause some odd effects similar to those that you
describe. Set it to false and see if it fixes the problem.
Reset your spritebatch's matrices before drawing the text, that way you won't need to adjust it for the scrolling.
I'd even go as far as to recommend not scaling the font if you can help it, because fonts often look a little odd after being scaled.