package com.mygdx.game;

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.Sprite;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.ui.Label;
import com.badlogic.gdx.scenes.scene2d.ui.Skin;
import com.badlogic.gdx.utils.viewport.ScreenViewport;

public class MyGdxGame extends ApplicationAdapter {
    private SpriteBatch batch;
    private OrthographicCamera camera;
    private ScreenViewport viewport;
    private Stage stage;

    private Skin skin;
    private Texture img;
    private Sprite sprite;

    private final float VIRTUAL_WIDTH = 160.0f;
    private float VIRTUAL_HEIGHT;

    @Override
    public void create () {
        batch = new SpriteBatch();
        camera = new OrthographicCamera();
        viewport = new ScreenViewport(camera);

        img = new Texture(Gdx.files.internal("badlogic.jpg"));
        sprite = new Sprite(img);
        sprite.setSize(20, 20);

        stage = new Stage(viewport);
        skin = new Skin(Gdx.files.internal("uiskin.json"));
        Label label = new Label("Hello World", skin);
        //label.setSize(40, 20);    // bez wplywu
        label.setFontScale(0.3f);   // dziala ale literki nachodza
        stage.addActor(label);

    }

    @Override
    public void resize(int width, int height)
    {
        stage.getViewport().update(width, height, true);

        VIRTUAL_HEIGHT = VIRTUAL_WIDTH *  height / width;

        camera.setToOrtho(false, VIRTUAL_WIDTH, VIRTUAL_HEIGHT);
        batch.setProjectionMatrix(camera.combined);
    }

    @Override
    public void render () {
        Gdx.gl.glClearColor(1, 0, 0, 1);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

        sprite.setPosition(VIRTUAL_WIDTH/2 - sprite.getWidth()/2, VIRTUAL_HEIGHT/2 - sprite.getHeight()/2);

        batch.begin();
        sprite.draw(batch);
        batch.end();

        stage.act();
        stage.draw();
    }

    @Override
    public void dispose () {
        batch.dispose();
        stage.dispose();
        skin.dispose();
        img.dispose();
    }
}