1 #107

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.math.Vector2;

public class MyGame extends ApplicationAdapter {
    SpriteBatch batch;
    Texture ballTexture;
    Vector2 ballPosition;
    Vector2 ballVelocity;

    @Override
    public void create() {
        batch = new SpriteBatch();
        ballTexture = new Texture("ball.png");
        ballPosition = new Vector2(100, 100);
        ballVelocity = new Vector2(3, 3);
    }

    @Override
    public void render() {
        Gdx.gl.glClearColor(1, 1, 1, 1);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        
        updateBallPosition();
        
        batch.begin();
        batch.draw(ballTexture, ballPosition.x, ballPosition.y);
        batch.end();
    }
    
    private void updateBallPosition() {
        ballPosition.x += ballVelocity.x;
        ballPosition.y += ballVelocity.y;
        
        if (ballPosition.x < 0 || ballPosition.x > Gdx.graphics.getWidth() - ballTexture.getWidth()) {
            ballVelocity.x *= -1;
        }
        
        if (ballPosition.y < 0 || ballPosition.y > Gdx.graphics.getHeight() - ballTexture.getHeight()) {
            ballVelocity.y *= -1;
        }
    }
    
    @Override
    public void dispose() {
        batch.dispose();
        ballTexture.dispose();
    }
}