Java tutorial
/* Copyright 2012-2014 Mathias Lux, mathias@juggle.at 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 at.juggle.games.memory; import com.badlogic.gdx.Gdx; import com.badlogic.gdx.Input; import com.badlogic.gdx.graphics.Color; import com.badlogic.gdx.graphics.Texture; import com.badlogic.gdx.graphics.g2d.SpriteBatch; /** * @author Mathias Lux, mathias@juggle.at * Date: 13.02.12 * Time: 10:09 */ public class MenuScreen extends AbstractScreen { private float l, h; private Texture logoTexture; private float scaleFont = 1f; public MenuScreen(AssetManager assets) { super(assets); // adapt menu font to smaller screens: if (MemoryGame.HEIGHT < 479) scaleFont = 0.8f; } @Override public void render(SpriteBatch spriteBatch) { assets.font.setScale(scaleFont, scaleFont); assets.font.getRegion().getTexture().setFilter(Texture.TextureFilter.Linear, Texture.TextureFilter.Linear); h = MemoryGame.HEIGHT; l = assets.font.getLineHeight() * scaleFont + 18; if (Gdx.input.justTouched()) { // (x,y) from top left corner float x = Gdx.input.getX() / ((float) Gdx.graphics.getWidth()) * ((float) MemoryGame.WIDTH); float y = Gdx.input.getY() / ((float) Gdx.graphics.getHeight()) * ((float) MemoryGame.HEIGHT); if (x > l && x < 2 * MemoryGame.WIDTH / 3) { if (y > l + 5 && y < 2 * l - 10) { // new Game assets.options.gameState = GameOptions.STATE_GAME; } else if (y > 2 * l + 5 && y < 3 * l - 10) { // number of cards changed assets.options.nextNumberOfCards(); } else if (y > 3 * l + 5 && y < 4 * l - 10) { // Mode assets.options.toggleGameMode(); } else if (y > 4 * l + 5 && y < 5 * l - 10) { // Sound assets.options.toggleSoundOn(); } else if (y > 5 * l + 5 && y < 6 * l - 10) { // credits assets.options.gameState = GameOptions.STATE_CREDITS; } } } // key listener ... if (assets.options.buttonPressTimeout < 0) { if (Gdx.input.isKeyPressed(Input.Keys.ESCAPE) || Gdx.input.isKeyPressed(Input.Keys.BACK)) { // use the back button Gdx.app.exit(); } } else assets.options.buttonPressTimeout -= Gdx.graphics.getDeltaTime(); // do the drawing ... spriteBatch.begin(); // draw background ... spriteBatch.draw(assets.background, 0, 0, MemoryGame.WIDTH, MemoryGame.HEIGHT); spriteBatch.setColor(Color.WHITE); if (MemoryGame.WIDTH / 3 - 20 < assets.logo.getWidth()) { // draw logo scaled float logoWidth = (int) (MemoryGame.WIDTH / 3f - 20f); spriteBatch.draw(assets.logo, MemoryGame.WIDTH - logoWidth - 10, 0, logoWidth, logoWidth); } else { spriteBatch.draw(assets.logo, MemoryGame.WIDTH - assets.logo.getWidth() - 10, 0); } assets.font.draw(spriteBatch, "> New Game", l, h - l); assets.font.draw(spriteBatch, "> Cards: ", l, h - 2 * l); assets.font.draw(spriteBatch, assets.options.getNumberOfCards() + "", 2 * MemoryGame.WIDTH / 3 - assets.font.getBounds(assets.options.getNumberOfCards() + "").width, h - 2 * l); assets.font.draw(spriteBatch, "> Mode: ", l, h - 3 * l); assets.font.draw(spriteBatch, assets.options.getGameModeString(), 2 * MemoryGame.WIDTH / 3 - assets.font.getBounds(assets.options.getGameModeString()).width, h - 3 * l); assets.font.draw(spriteBatch, "> Sound: ", l, h - 4 * l); assets.font.draw(spriteBatch, (assets.options.soundOn) ? "On" : "Off", 2 * MemoryGame.WIDTH / 3 - assets.font.getBounds((assets.options.soundOn) ? "On" : "Off").width, h - 4 * l); assets.font.draw(spriteBatch, "> Credits", l, h - 5 * l); spriteBatch.end(); } }