com.momia.asg.screens.MainMenu.java Source code

Introduction

Here is the source code for com.momia.asg.screens.MainMenu.java

Source

/*******************************************************************************
 * 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.momia.asg.screens;

import com.badlogic.gdx.Game;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.ScreenAdapter;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.Pixmap;
import com.badlogic.gdx.graphics.Pixmap.Format;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.scenes.scene2d.Actor;
import com.badlogic.gdx.scenes.scene2d.Event;
import com.badlogic.gdx.scenes.scene2d.InputEvent;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.ui.Image;
import com.badlogic.gdx.scenes.scene2d.ui.Skin;
import com.badlogic.gdx.scenes.scene2d.ui.Table;
import com.badlogic.gdx.scenes.scene2d.ui.TextButton;
import com.badlogic.gdx.scenes.scene2d.ui.TextButton.TextButtonStyle;
import com.badlogic.gdx.scenes.scene2d.utils.ChangeListener;
import com.badlogic.gdx.scenes.scene2d.utils.ClickListener;
import com.momia.asg.ASG;

public class MainMenu extends ScreenAdapter {
    Skin skin;
    Stage stage;
    SpriteBatch batch;
    final ASG game;

    public MainMenu(final ASG game) {
        this.game = game;
        batch = new SpriteBatch();
        stage = new Stage();
        Gdx.input.setInputProcessor(stage);
        // A skin can be loaded via JSON or defined programmatically, either is fine. Using a skin is optional but strongly
        // recommended solely for the convenience of getting a texture, region, etc as a drawable, tinted drawable, etc.
        skin = new Skin();
        // Generate a 1x1 white texture and store it in the skin named "white".
        Pixmap pixmap = new Pixmap(1, 1, Format.RGBA8888);
        pixmap.setColor(Color.WHITE);
        pixmap.fill();
        skin.add("white", new Texture(pixmap));
        // Store the default libgdx font under the name "default".
        skin.add("default", new BitmapFont());
        // Configure a TextButtonStyle and name it "default". Skin resources are stored by type, so this doesn't overwrite the font.
        TextButtonStyle textButtonStyle = new TextButtonStyle();
        textButtonStyle.up = skin.newDrawable("white", Color.DARK_GRAY);
        textButtonStyle.down = skin.newDrawable("white", Color.DARK_GRAY);
        textButtonStyle.checked = skin.newDrawable("white", Color.BLUE);
        textButtonStyle.over = skin.newDrawable("white", Color.LIGHT_GRAY);
        textButtonStyle.font = skin.getFont("default");
        skin.add("default", textButtonStyle);
        // Create a table that fills the screen. Everything else will go inside this table.
        Table table = new Table();
        table.setFillParent(true);
        stage.addActor(table);
        // Create a button with the "default" TextButtonStyle. A 3rd parameter can be used to specify a name other than "default".
        final TextButton button = new TextButton("New Game", skin);
        table.add(button);
        // Add a listener to the button. ChangeListener is fired when the button's checked state changes, eg when clicked,
        // Button#setChecked() is called, via a key press, etc. If the event.cancel() is called, the checked state will be reverted.
        // ClickListener could have been used, but would only fire when clicked. Also, canceling a ClickListener event won't
        // revert the checked state.
        button.addListener(new ClickListener() {
            public void clicked(InputEvent event, float x, float y) {
                if (button.isChecked())
                    game.setScreen(new Screen1(game));
            }
        });

    }

    @Override
    public void render(float deltaTime) {
        Gdx.gl.glClearColor(0.2f, 0.2f, 0.2f, 1);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        stage.act(Math.min(Gdx.graphics.getDeltaTime(), 1 / 30f));
        stage.draw();
    }

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

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