What to do in Screen after each draw and before a new draw?

OpenGL Development
#1

Hi guys. :stuck_out_tongue: :stuck_out_tongue:
Im trying to make a little plane move on screen and learn about this lib and hmm, i got the same problem that i had in java2D and i wanted to know what should i do :

Each time it passes render it moves the sprite BUT, it gets dragged and it doesnt erase the texture that was before unless this code is there :
:point:

http://imageshack.us/a/img209/1107/withoutclearcode.jpg

http://imageshack.us/a/img822/2448/withclearcode.jpg

::slight_smile: ::slight_smile: ::slight_smile: ::slight_smile:

package mainLoop;

import com.badlogic.gdx.ApplicationListener;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.FPSLogger;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.Sprite;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import models.Plane;

/**
 *
 * @author André 
 */
public class ShooterGame implements ApplicationListener {

    // constant useful for logging
    public static final String LOG = ShooterGame.class.getSimpleName();
    // a libgdx helper class that logs the current FPS each second
    private FPSLogger fpsLogger;
    private Plane plane;

    public ShooterGame() {
        plane = new Plane();
    }

    @Override
    public void create() {
        fpsLogger = new FPSLogger();
        Texture planeTexture = plane.getPlaneTexture();
        draw(planeTexture,plane.getxPos(),plane.getyPos());
    }

    @Override
    public void render() {
        fpsLogger.log();
        update();
       
        // the following code clears the screen with the given RGB color (green)
        Gdx.gl.glClearColor( 0f, 1f, 0f, 1f );
        Gdx.gl.glClear( GL20.GL_COLOR_BUFFER_BIT );
        
        Texture planeTexture = plane.getPlaneTexture();
        draw(planeTexture,plane.getxPos(),plane.getyPos());
    }

    public void update()
    {
        plane.setxPos(plane.getxPos() + 2);
        plane.setyPos(plane.getyPos() + 2);
    }
    
    public void draw(Texture texture,int xPos,int yPos)
    {
        Sprite sprite = new Sprite(texture);
        sprite.setX(xPos);
        sprite.setY(yPos);
        //
        SpriteBatch spriteBatch = new SpriteBatch();
        spriteBatch.begin();

        //
        sprite.draw(spriteBatch);
        spriteBatch.flush();
        spriteBatch.dispose();
        //
        spriteBatch.end();
        
    }
    
    
    @Override
    public void resize(int width, int height) {
    }

    @Override
    public void pause() {
    }

    @Override
    public void resume() {
    }

    @Override
    public void dispose() {
    }
}


package imagesSounds;

import com.badlogic.gdx.graphics.Texture;

/**
 *
 * @author André 
 */

public class TexturesLoader 
{

/**Chamado Apenas pelas Models*/
public static Texture getPlaneTexture()
{
    Texture splashTexture = new Texture( "D:\\Arquivos && Java\\MeusProjetosJava\\ImagesVideosAudio\\Images\\plane.jpg" );
    return splashTexture;
}
    
    
    
}