/*******************************************************************************
 * Copyright 2011 See AUTHORS file.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

package com.badlogic.gdx.tests;

import static com.badlogic.gdx.scenes.scene2d.actions.Actions.fadeIn;
import static com.badlogic.gdx.scenes.scene2d.actions.Actions.fadeOut;
import static com.badlogic.gdx.scenes.scene2d.actions.Actions.forever;
import static com.badlogic.gdx.scenes.scene2d.actions.Actions.sequence;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.TextureRegion;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.ui.Image;
import com.badlogic.gdx.tests.utils.GdxTest;

public class GroupFadeTest extends GdxTest {

	Texture texture;
	Stage stage;

	@Override
	public void create () {
		texture = new Texture(Gdx.files.internal("data/badlogicsmall.jpg"));
		stage = new Stage();

		for (int i = 0; i < 100; i++) {
			Image img = new Image(new TextureRegion(texture));
			img.setX((float)Math.random() * 480);
			img.setY((float)Math.random() * 320);
			img.getColor().a = (float)Math.random() * 0.5f + 0.5f;
			stage.addActor(img);
		}

		stage.getRoot().addAction(forever(sequence(fadeOut(3), fadeIn(3))));
	}

	@Override
	public void render () {
		Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
		stage.act(Gdx.graphics.getDeltaTime());
		stage.draw();
	}

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