Android Games: HelloWorld

Afluentes: Jogos Digitais

Assets

• verdana.fnt
• verdana.png
• sphere.png
• in.wav
• out.wav
• otomata_music.ogg

Classe Principal

package com.mygdx.game;

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input;
import com.badlogic.gdx.audio.Music;
import com.badlogic.gdx.audio.Sound;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.Sprite;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.utils.ScreenUtils;

public class MyGdxGame extends ApplicationAdapter {
    SpriteBatch batch;
    BitmapFont font;
    Sprite sprite;
    Music music;
    Sound sndIn, sndOut;
    static final int SPEED = 10;
    int w, h;

    @Override
    public void create() {
        w = Gdx.graphics.getWidth();
        h = Gdx.graphics.getHeight();
        batch = new SpriteBatch();
        sprite = new Sprite(new Texture("sphere.png"));
        font = new BitmapFont(
                Gdx.files.internal("verdana.fnt"),
                Gdx.files.internal("verdana.png"), false
        );
        sndIn = Gdx.audio.newSound(Gdx.files.internal("in.wav"));
        sndOut = Gdx.audio.newSound(Gdx.files.internal("out.wav"));
        music = Gdx.audio.newMusic(Gdx.files.internal("otomata_music.ogg"));
        music.setLooping(true);
        music.play();
    }

    public void execute() {
        if (Gdx.input.isKeyPressed(Input.Keys.UP)) {
            sprite.translateY(SPEED);
        } else if (Gdx.input.isKeyPressed(Input.Keys.DOWN)) {
            sprite.translateY(-SPEED);
        }
        if (Gdx.input.isKeyPressed(Input.Keys.RIGHT)) {
            sprite.translateX(SPEED);
        } else if (Gdx.input.isKeyPressed(Input.Keys.LEFT)) {
            sprite.translateX(-SPEED);
        }
        sprite.setX(clamp(sprite.getX(), 0, w - sprite.getWidth()));
        sprite.setY(clamp(sprite.getY(), 0, h - sprite.getHeight()));
    }

    @Override
    public void render() {
        execute();
        ScreenUtils.clear(0, 0.5f, 0, 1);
        batch.begin();
        sprite.draw(batch);
        font.draw(batch, "X: " + sprite.getX() + " Y: " + sprite.getY(), 1, h);
        batch.end();
    }

    public float clamp(float val, float min, float max) {
        if (val < min) {
        	sndOut.play();
        	return min;
		}
        if (val > max) {
        	sndOut.play();
        	return max;
		}
        return val;
    }

    @Override
    public void dispose() {
        batch.dispose();
        sprite.getTexture().dispose();
        font.dispose();
        music.dispose();
        sndIn.dispose();
        sndOut.dispose();
    }
}

Gerar pacote JAR para desktop

No Linux, na pasta do projeto executar:

./gradlew desktop:dist

No Windows, na pasta do projeto executar:

gradlew desktop:dist

Vai ser gerado um jar na pasta desktop/build/libs/ . Copie o arquivo ou execute lá:

java -jar desktop-1.0.jar

Você pode renomear o arquivo para o nome do projeto.

Use o oracle java 8 ou o Open Java 8.