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0

i´m currently working on a Android game with the library libgdx. Currently I m facing a problem, where the xy-coordinate system is flipt.

I did some research and found that if you use a OrthographicCamera you can change the y coordinate so its no longer flipt.

Code:

public class Game extends ApplicationAdapter 
Miner miner;
SpriteBatch batch;
TouchManager touchManager;
OrthographicCamera camera;

public void create()
 camera = new OrthographicCamera(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
 camera.setToOrtho(true, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
 miner = new Miner(new Texture(Gdx.files.internal("miner_lv1.png")), 0, 0, 200, 200);
 batch = new SpriteBatch();
 touchManager = new TouchManager();


public void render()
 //update
 camera.update();
 touchManager.update(camera);
 miner.update();

 //drawing
 Gdx.gl.glClearColor(1, 1, 1, 1);
 Gdx.gl.glClear(Gdx.gl20.GL_COLOR_BUFFER_BIT);

 batch.begin();
 miner.render(batch);
 batch.end();


public void dispose()

 batch.dispose();
 miner.dispose();

Miner:

public class Miner extends Entity 
public Miner(Texture texture, int x, int y, int width, int height) 
 super(texture, x, y, width, height);


@Override
public void update() 
 sprite.setX(x);
 sprite.setY(y);


@Override
public void render(SpriteBatch batch) 
 sprite.draw(batch);


@Override
public void dispose() 
 texture.dispose();

The output is as following:
Ouptut of code

My question is how do i change the coordinate system that x = 0 and y = 0 is in the top left corner.

Thank you in advance!

android libgdx

share|improve this question

asked Mar 21 at 22:12

DavidDevDavidDev

11

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Possible duplicate of Changing the Coordinate System in LibGDX (Java)
  
  – Luis Fernando Frontanilla
  Mar 22 at 2:23
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  No, i got the information about the ydown from there, but it doesnt work as you can see.
  
  – DavidDev
  Mar 22 at 7:34
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  it if is in the top left corner by default.
  
  – icarumbas
  Mar 22 at 22:03
  

  
  
  
  

add a comment | 

0

i´m currently working on a Android game with the library libgdx. Currently I m facing a problem, where the xy-coordinate system is flipt.

I did some research and found that if you use a OrthographicCamera you can change the y coordinate so its no longer flipt.

Code:

public class Game extends ApplicationAdapter 
Miner miner;
SpriteBatch batch;
TouchManager touchManager;
OrthographicCamera camera;

public void create()
 camera = new OrthographicCamera(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
 camera.setToOrtho(true, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
 miner = new Miner(new Texture(Gdx.files.internal("miner_lv1.png")), 0, 0, 200, 200);
 batch = new SpriteBatch();
 touchManager = new TouchManager();


public void render()
 //update
 camera.update();
 touchManager.update(camera);
 miner.update();

 //drawing
 Gdx.gl.glClearColor(1, 1, 1, 1);
 Gdx.gl.glClear(Gdx.gl20.GL_COLOR_BUFFER_BIT);

 batch.begin();
 miner.render(batch);
 batch.end();


public void dispose()

 batch.dispose();
 miner.dispose();

Miner:

public class Miner extends Entity 
public Miner(Texture texture, int x, int y, int width, int height) 
 super(texture, x, y, width, height);


@Override
public void update() 
 sprite.setX(x);
 sprite.setY(y);


@Override
public void render(SpriteBatch batch) 
 sprite.draw(batch);


@Override
public void dispose() 
 texture.dispose();

The output is as following:
Ouptut of code

My question is how do i change the coordinate system that x = 0 and y = 0 is in the top left corner.

Thank you in advance!

android libgdx

share|improve this question

asked Mar 21 at 22:12

DavidDevDavidDev

11

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Possible duplicate of Changing the Coordinate System in LibGDX (Java)
  
  – Luis Fernando Frontanilla
  Mar 22 at 2:23
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  No, i got the information about the ydown from there, but it doesnt work as you can see.
  
  – DavidDev
  Mar 22 at 7:34
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  it if is in the top left corner by default.
  
  – icarumbas
  Mar 22 at 22:03
  

  
  
  
  

add a comment | 

i´m currently working on a Android game with the library libgdx. Currently I m facing a problem, where the xy-coordinate system is flipt.

I did some research and found that if you use a OrthographicCamera you can change the y coordinate so its no longer flipt.

Code:

public class Game extends ApplicationAdapter 
Miner miner;
SpriteBatch batch;
TouchManager touchManager;
OrthographicCamera camera;

public void create()
 camera = new OrthographicCamera(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
 camera.setToOrtho(true, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
 miner = new Miner(new Texture(Gdx.files.internal("miner_lv1.png")), 0, 0, 200, 200);
 batch = new SpriteBatch();
 touchManager = new TouchManager();


public void render()
 //update
 camera.update();
 touchManager.update(camera);
 miner.update();

 //drawing
 Gdx.gl.glClearColor(1, 1, 1, 1);
 Gdx.gl.glClear(Gdx.gl20.GL_COLOR_BUFFER_BIT);

 batch.begin();
 miner.render(batch);
 batch.end();


public void dispose()

 batch.dispose();
 miner.dispose();

Miner:

public class Miner extends Entity 
public Miner(Texture texture, int x, int y, int width, int height) 
 super(texture, x, y, width, height);


@Override
public void update() 
 sprite.setX(x);
 sprite.setY(y);


@Override
public void render(SpriteBatch batch) 
 sprite.draw(batch);


@Override
public void dispose() 
 texture.dispose();

The output is as following:
Ouptut of code

My question is how do i change the coordinate system that x = 0 and y = 0 is in the top left corner.

Thank you in advance!

android libgdx

share|improve this question

asked Mar 21 at 22:12

DavidDevDavidDev

11

public class Game extends ApplicationAdapter 
Miner miner;
SpriteBatch batch;
TouchManager touchManager;
OrthographicCamera camera;

public void create()
 camera = new OrthographicCamera(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
 camera.setToOrtho(true, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
 miner = new Miner(new Texture(Gdx.files.internal("miner_lv1.png")), 0, 0, 200, 200);
 batch = new SpriteBatch();
 touchManager = new TouchManager();


public void render()
 //update
 camera.update();
 touchManager.update(camera);
 miner.update();

 //drawing
 Gdx.gl.glClearColor(1, 1, 1, 1);
 Gdx.gl.glClear(Gdx.gl20.GL_COLOR_BUFFER_BIT);

 batch.begin();
 miner.render(batch);
 batch.end();


public void dispose()

 batch.dispose();
 miner.dispose();

public class Miner extends Entity 
public Miner(Texture texture, int x, int y, int width, int height) 
 super(texture, x, y, width, height);


@Override
public void update() 
 sprite.setX(x);
 sprite.setY(y);


@Override
public void render(SpriteBatch batch) 
 sprite.draw(batch);


@Override
public void dispose() 
 texture.dispose();

android libgdx

android libgdx

share|improve this question

asked Mar 21 at 22:12

DavidDevDavidDev

11

share|improve this question

asked Mar 21 at 22:12

DavidDevDavidDev

11

asked Mar 21 at 22:12

DavidDevDavidDev

11

asked Mar 21 at 22:12

DavidDevDavidDev

11

1 Answer
1

active

oldest

votes

0

You aren't using the camera until you call batch.setProjectionMatrix(camera.combined);.

share|improve this answer

answered Mar 22 at 23:39

Tenfour04Tenfour04

16.1k53681

add a comment | 

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0

You aren't using the camera until you call batch.setProjectionMatrix(camera.combined);.

share|improve this answer

answered Mar 22 at 23:39

Tenfour04Tenfour04

16.1k53681

add a comment | 

0

You aren't using the camera until you call batch.setProjectionMatrix(camera.combined);.

share|improve this answer

answered Mar 22 at 23:39

Tenfour04Tenfour04

16.1k53681

add a comment | 

You aren't using the camera until you call batch.setProjectionMatrix(camera.combined);.

share|improve this answer

answered Mar 22 at 23:39

Tenfour04Tenfour04

16.1k53681

share|improve this answer

answered Mar 22 at 23:39

Tenfour04Tenfour04

16.1k53681

answered Mar 22 at 23:39

Tenfour04Tenfour04

16.1k53681

answered Mar 22 at 23:39

Tenfour04Tenfour04

16.1k53681