org.bladecoder.bladeengine.ui.MenuScreen.java Source code

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Here is the source code for org.bladecoder.bladeengine.ui.MenuScreen.java

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/*******************************************************************************
 * Copyright 2014 Rafael Garcia Moreno.
 * 
 * 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 org.bladecoder.bladeengine.ui;

import org.bladecoder.bladeengine.assets.EngineAssetManager;
import org.bladecoder.bladeengine.ui.UI.State;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input;
import com.badlogic.gdx.Screen;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.scenes.scene2d.InputListener;
import com.badlogic.gdx.scenes.scene2d.InputEvent;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.ui.ImageButton;
import com.badlogic.gdx.scenes.scene2d.ui.Table;
import com.badlogic.gdx.scenes.scene2d.utils.ClickListener;
import com.badlogic.gdx.scenes.scene2d.utils.TextureRegionDrawable;
import com.badlogic.gdx.utils.viewport.ExtendViewport;

public class MenuScreen implements Screen {

    public static final String BACK_COMMAND = "back";
    public static final String QUIT_COMMAND = "quit";
    public static final String RELOAD_COMMAND = "reload";
    public static final String HELP_COMMAND = "help";
    public static final String CREDITS_COMMAND = "credits";

    private static final float MARGIN = 15;

    UI ui;

    Stage stage;

    public MenuScreen(UI ui) {
        this.ui = ui;
    }

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

        stage.act(delta);
        stage.draw();

        ui.getBatch().setProjectionMatrix(stage.getViewport().getCamera().combined);
        ui.getBatch().begin();
        ui.getPointer().draw(ui.getBatch(), stage.getViewport());
        ui.getBatch().end();
    }

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

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

    @Override
    public void show() {
        int wWidth = EngineAssetManager.getInstance().getResolution().portraitWidth;
        int wHeight = EngineAssetManager.getInstance().getResolution().portraitHeight;

        stage = new Stage(new ExtendViewport(wWidth, wHeight));

        Table table = new Table();
        table.setFillParent(true);
        table.center();

        table.addListener(new InputListener() {
            @Override
            public boolean keyUp(InputEvent event, int keycode) {
                if (keycode == Input.Keys.ESCAPE || keycode == Input.Keys.BACK)
                    ui.setScreen(State.SCENE_SCREEN);
                return true;
            }
        });

        stage.setKeyboardFocus(table);

        ImageButton back = new ImageButton(new TextureRegionDrawable(ui.getUIAtlas().findRegion(BACK_COMMAND)));
        back.addListener(new ClickListener() {
            public void clicked(InputEvent event, float x, float y) {
                ui.setScreen(State.SCENE_SCREEN);
            }
        });

        table.add(back).pad(MARGIN);

        ImageButton reload = new ImageButton(new TextureRegionDrawable(ui.getUIAtlas().findRegion(RELOAD_COMMAND)));
        reload.addListener(new ClickListener() {
            public void clicked(InputEvent event, float x, float y) {
                ui.setScreen(State.RESTART_SCREEN);
            }
        });

        table.add(reload).pad(MARGIN);

        ImageButton help = new ImageButton(new TextureRegionDrawable(ui.getUIAtlas().findRegion(HELP_COMMAND)));
        help.addListener(new ClickListener() {
            public void clicked(InputEvent event, float x, float y) {
                ui.setScreen(State.HELP_SCREEN);
            }
        });

        table.add(help).pad(MARGIN);

        ImageButton credits = new ImageButton(
                new TextureRegionDrawable(ui.getUIAtlas().findRegion(CREDITS_COMMAND)));
        credits.addListener(new ClickListener() {
            public void clicked(InputEvent event, float x, float y) {
                ui.setScreen(State.CREDIT_SCREEN);
            }
        });

        table.add(credits).pad(MARGIN);

        ImageButton quit = new ImageButton(new TextureRegionDrawable(ui.getUIAtlas().findRegion(QUIT_COMMAND)));
        quit.addListener(new ClickListener() {
            public void clicked(InputEvent event, float x, float y) {
                Gdx.app.exit();
            }
        });

        table.add(quit).pad(MARGIN);
        table.pack();

        stage.addActor(table);

        Gdx.input.setInputProcessor(stage);
    }

    @Override
    public void hide() {
        dispose();
    }

    @Override
    public void pause() {
    }

    @Override
    public void resume() {
    }
}