Java tutorial
/******************************************************************************* * 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 com.bladecoder.engine.ui; import com.badlogic.gdx.Gdx; import com.badlogic.gdx.Input; import com.badlogic.gdx.Input.Keys; import com.badlogic.gdx.ScreenAdapter; import com.badlogic.gdx.graphics.GL20; 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.TextureRegion; import com.badlogic.gdx.scenes.scene2d.InputEvent; import com.badlogic.gdx.scenes.scene2d.InputListener; import com.badlogic.gdx.scenes.scene2d.Stage; import com.badlogic.gdx.scenes.scene2d.ui.Button; import com.badlogic.gdx.scenes.scene2d.ui.Dialog; import com.badlogic.gdx.scenes.scene2d.ui.Label; 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.ClickListener; import com.badlogic.gdx.scenes.scene2d.utils.Drawable; import com.badlogic.gdx.scenes.scene2d.utils.TextureRegionDrawable; import com.badlogic.gdx.utils.Align; import com.badlogic.gdx.utils.viewport.ScreenViewport; import com.bladecoder.engine.assets.EngineAssetManager; import com.bladecoder.engine.i18n.I18N; import com.bladecoder.engine.model.World; import com.bladecoder.engine.ui.UI.Screens; import com.bladecoder.engine.util.Config; import com.bladecoder.engine.util.DPIUtils; import com.bladecoder.engine.util.EngineLogger; public class MenuScreen extends ScreenAdapter implements BladeScreen { private final static float BUTTON_PADDING = DPIUtils.UI_SPACE; private UI ui; private Stage stage; private Texture bgTexFile = null; private Pointer pointer; private Button credits; private Button help; private Button debug; public MenuScreen() { } @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(); } @Override public void resize(int width, int height) { stage.getViewport().update(width, height, true); pointer.resize(); float size = DPIUtils.getPrefButtonSize(); credits.setSize(size, size); help.setSize(size, size); debug.setSize(size, size); } @Override public void dispose() { stage.dispose(); stage = null; if (bgTexFile != null) { bgTexFile.dispose(); } bgTexFile = null; } @Override public void show() { stage = new Stage(new ScreenViewport()); final Skin skin = ui.getSkin(); final World world = World.getInstance(); final MenuScreenStyle style = skin.get(MenuScreenStyle.class); final BitmapFont f = skin.get(style.textButtonStyle, TextButtonStyle.class).font; float buttonWidth = f.getCapHeight() * 15f; // Image background = new Image(style.background); Drawable bg = style.background; if (bg == null && style.bgFile != null) { bgTexFile = new Texture(EngineAssetManager.getInstance().getResAsset(style.bgFile)); bgTexFile.setFilter(TextureFilter.Linear, TextureFilter.Linear); bg = new TextureRegionDrawable(new TextureRegion(bgTexFile)); } final Table table = new Table(); table.setFillParent(true); table.center(); if (bg != null) table.setBackground(bg); table.addListener(new InputListener() { @Override public boolean keyUp(InputEvent event, int keycode) { if (keycode == Input.Keys.ESCAPE || keycode == Input.Keys.BACK) if (world.getCurrentScene() != null) ui.setCurrentScreen(Screens.SCENE_SCREEN); return true; } }); table.defaults().pad(BUTTON_PADDING).width(buttonWidth); stage.setKeyboardFocus(table); if (style.showTitle) { Label title = new Label(Config.getProperty(Config.TITLE_PROP, "Adventure Blade Engine"), skin, style.titleStyle); title.setAlignment(Align.center); table.add(title).padBottom(DPIUtils.getMarginSize() * 2); table.row(); } if (world.savedGameExists() || world.getCurrentScene() != null) { TextButton continueGame = new TextButton(I18N.getString("ui.continue"), skin, style.textButtonStyle); continueGame.addListener(new ClickListener() { public void clicked(InputEvent event, float x, float y) { if (world.getCurrentScene() == null) try { world.load(); } catch (Exception e) { Gdx.app.exit(); } ui.setCurrentScreen(Screens.SCENE_SCREEN); } }); table.add(continueGame); } TextButton newGame = new TextButton(I18N.getString("ui.new"), skin, style.textButtonStyle); newGame.addListener(new ClickListener() { public void clicked(InputEvent event, float x, float y) { if (world.savedGameExists()) { Dialog d = new Dialog("", skin) { protected void result(Object object) { if (((Boolean) object).booleanValue()) { try { world.newGame(); } catch (Exception e) { Gdx.app.exit(); } ui.setCurrentScreen(Screens.SCENE_SCREEN); } } }; d.pad(DPIUtils.getMarginSize()); d.getButtonTable().padTop(DPIUtils.getMarginSize()); d.getButtonTable().defaults().padLeft(DPIUtils.getMarginSize()) .padRight(DPIUtils.getMarginSize()); Label l = new Label(I18N.getString("ui.override"), ui.getSkin(), "ui-dialog"); l.setWrap(true); l.setAlignment(Align.center); d.getContentTable().add(l).prefWidth(Gdx.graphics.getWidth() * .7f); d.button(I18N.getString("ui.yes"), true, ui.getSkin().get("ui-dialog", TextButtonStyle.class)); d.button(I18N.getString("ui.no"), false, ui.getSkin().get("ui-dialog", TextButtonStyle.class)); d.key(Keys.ENTER, true).key(Keys.ESCAPE, false); d.show(stage); } else { try { world.newGame(); } catch (Exception e) { Gdx.app.exit(); } ui.setCurrentScreen(Screens.SCENE_SCREEN); } } }); table.row(); table.add(newGame); TextButton loadGame = new TextButton(I18N.getString("ui.load"), skin, style.textButtonStyle); loadGame.addListener(new ClickListener() { public void clicked(InputEvent event, float x, float y) { ui.setCurrentScreen(Screens.LOAD_GAME_SCREEN); } }); table.row(); table.add(loadGame); // if (world.getCurrentScene() != null) { // TextButton saveGame = new TextButton(I18N.getString("ui.save"), skin, style.textButtonStyle); // saveGame.addListener(new ClickListener() { // public void clicked(InputEvent event, float x, float y) { // ui.setCurrentScreen(Screens.SAVE_GAME_SCREEN); // } // }); // // table.row(); // table.add(saveGame); // } TextButton quit = new TextButton(I18N.getString("ui.quit"), skin, style.textButtonStyle); quit.addListener(new ClickListener() { public void clicked(InputEvent event, float x, float y) { Gdx.app.exit(); } }); table.row(); table.add(quit); table.pack(); stage.addActor(table); // BOTTOM-RIGHT BUTTON STACK credits = new Button(skin, "credits"); credits.addListener(new ClickListener() { public void clicked(InputEvent event, float x, float y) { ui.setCurrentScreen(Screens.CREDIT_SCREEN); } }); help = new Button(skin, "help"); help.addListener(new ClickListener() { public void clicked(InputEvent event, float x, float y) { ui.setCurrentScreen(Screens.HELP_SCREEN); } }); debug = new Button(skin, "debug"); debug.addListener(new ClickListener() { public void clicked(InputEvent event, float x, float y) { DebugScreen debugScr = new DebugScreen(); debugScr.setUI(ui); ui.setCurrentScreen(debugScr); } }); Table buttonStack = new Table(); buttonStack.defaults().pad(DPIUtils.getSpacing()).size(DPIUtils.getPrefButtonSize(), DPIUtils.getPrefButtonSize()); buttonStack.pad(DPIUtils.getMarginSize() * 2); if (EngineLogger.debugMode() && world.getCurrentScene() != null) { buttonStack.add(debug); buttonStack.row(); } buttonStack.add(help); buttonStack.row(); buttonStack.add(credits); buttonStack.bottom().right(); buttonStack.setFillParent(true); buttonStack.pack(); stage.addActor(buttonStack); Label version = new Label("v" + Config.getProperty(Config.VERSION_PROP, " unspecified"), skin); version.setPosition(DPIUtils.getMarginSize(), DPIUtils.getMarginSize()); stage.addActor(version); debug.addListener(new ClickListener() { public void clicked(InputEvent event, float x, float y) { DebugScreen debugScr = new DebugScreen(); debugScr.setUI(ui); ui.setCurrentScreen(debugScr); } }); pointer = new Pointer(skin); stage.addActor(pointer); Gdx.input.setInputProcessor(stage); } @Override public void hide() { dispose(); } @Override public void setUI(UI ui) { this.ui = ui; } /** The style for the MenuScreen */ public static class MenuScreenStyle { /** Optional. */ public Drawable background; /** if 'bg' not specified try to load the bgFile */ public String bgFile; public String textButtonStyle; public String titleStyle; public boolean showTitle; public MenuScreenStyle() { } public MenuScreenStyle(MenuScreenStyle style) { background = style.background; bgFile = style.bgFile; textButtonStyle = style.textButtonStyle; showTitle = style.showTitle; titleStyle = style.titleStyle; } } }