net.kleinhenz.meteors.GameScreen.java Source code

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Here is the source code for net.kleinhenz.meteors.GameScreen.java

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/*
 * Board Game Engine
 * Copyright (c) 2013 Michael Kleinhenz (michael@kleinhenz.net)
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a 
 * copy of this software and associated documentation files (the "Software"), 
 * to deal in the Software without restriction, including without limitation 
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 
 * and/or sell copies of the Software, and to permit persons to whom the 
 * Software is furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included 
 * in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
 * DEALINGS IN THE SOFTWARE.
 */
package net.kleinhenz.meteors;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Screen;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.utils.viewport.StretchViewport;

/**
 * This class provides a basic framework for board game screens.
 * It creates a scene, adds a camera and sets reasonable defaults
 * for resolution and clipping.
 */
public abstract class GameScreen implements Screen {

    public static final int WIDTH = 1280;
    public static final int HEIGHT = 720;

    protected Stage stage = null;

    public GameScreen() {
        super();

        OrthographicCamera cam = new OrthographicCamera(WIDTH, HEIGHT);
        stage = new Stage(new StretchViewport(WIDTH, HEIGHT, cam));
    }

    @Override
    public void render(float delta) {
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

        stage.act(Gdx.graphics.getDeltaTime());
        stage.draw();
    }

    /**
     * Adds a background to the screen.
     * 
     * @param background
     */
    public void addBackground(Background background) {
        stage.addActor(background);
    }

    @Override
    public void show() {
        Gdx.input.setInputProcessor(stage);
    }

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

    @Override
    public void hide() {
        // NOP
    }

    @Override
    public void pause() {
        // NOP
    }

    @Override
    public void resume() {
        // NOP
    }

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

    public Stage getStage() {
        return stage;
    }
}