com.davidykay.shootout.screens.MainMenu.java Source code

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Here is the source code for com.davidykay.shootout.screens.MainMenu.java

Source

/*
 * Copyright 2010 Mario Zechner (contact@badlogicgames.com), Nathan Sweet (admin@esotericsoftware.com)
 *
 * 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.davidykay.shootout.screens;

import com.badlogic.gdx.Application;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.GL10;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.Texture.TextureFilter;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.math.Matrix4;
import com.davidykay.shootout.ShootOut;

/**
 * The main menu screen showing a background, the logo of the game and a label telling the user to touch the screen to start the
 * game. Waits for the touch and returns isDone() == true when it's done so that the ochestrating ShootOut class can switch to
 * the next screen.
 * @author mzechner
 *
 */
public class MainMenu implements Screen {
    /** the SpriteBatch used to draw the background, logo and text **/
    private final SpriteBatch spriteBatch;
    /** the background texture **/
    private final Texture background;
    /** the logo texture **/
    private final Texture logo;
    /** the font **/
    private final BitmapFont font;
    /** is done flag **/
    private boolean isDone = false;
    /** view & transform matrix **/
    private final Matrix4 viewMatrix = new Matrix4();
    private final Matrix4 transformMatrix = new Matrix4();

    public MainMenu(Application app) {
        spriteBatch = new SpriteBatch();
        background = new Texture(Gdx.files.internal(ShootOut.BACKGROUND));
        background.setFilter(TextureFilter.Linear, TextureFilter.Linear);

        logo = new Texture(Gdx.files.internal(ShootOut.TITLE));
        logo.setFilter(TextureFilter.Linear, TextureFilter.Linear);

        font = new BitmapFont(Gdx.files.internal(ShootOut.FONT_FNT), Gdx.files.internal(ShootOut.FONT_PNG), false);
    }

    @Override
    public void render(Application app) {
        app.getGraphics().getGL10().glClear(GL10.GL_COLOR_BUFFER_BIT);

        viewMatrix.setToOrtho2D(0, 0, 480, 320);
        spriteBatch.setProjectionMatrix(viewMatrix);
        spriteBatch.setTransformMatrix(transformMatrix);
        spriteBatch.begin();
        spriteBatch.disableBlending();
        spriteBatch.setColor(Color.WHITE);
        spriteBatch.draw(background, 0, 0, 480, 320, 0, 0, 512, 512, false, false);
        spriteBatch.enableBlending();
        spriteBatch.draw(logo, 0, 320 - 128, 480, 128, 0, 0, 512, 256, false, false);
        spriteBatch.setBlendFunction(GL10.GL_ONE, GL10.GL_ONE_MINUS_SRC_ALPHA);
        String text = "Touch to start!";
        float width = font.getBounds(text).width;
        font.draw(spriteBatch, text, 240 - width / 2, 128);
        spriteBatch.end();
    }

    @Override
    public void update(Application app) {
        isDone = app.getInput().isTouched();
    }

    @Override
    public boolean isDone() {
        return isDone;
    }

    @Override
    public void dispose() {
        spriteBatch.dispose();
        background.dispose();
        logo.dispose();
        font.dispose();
    }
}