Java tutorial
/***************************************************************************** * Copyright 2013, see AUTHORS file. * * This file is part of Sniffy's Flip Trip. * * Sniffy's Flip Trip is free software: you can redistribute it and/or * modify it under the terms of the GNU General Public License as published * by the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * Sniffy's Flip Trip is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Sniffy's Flip Trip. * If not, see <http://www.gnu.org/licenses/>. ****************************************************************************/ package com.explatcreations.sft.gui; import com.badlogic.gdx.graphics.Color; import com.explatcreations.sft.Game; import com.explatcreations.sft.data.Point2i; import com.explatcreations.sft.data.Timer; import com.explatcreations.sft.functions.IAction; import com.explatcreations.sft.graphics.RectSprite; import com.explatcreations.sft.graphics.SpriteBase; import com.explatcreations.sft.input.Controls; import com.explatcreations.sft.particles.ParticleManager; /** * @author deweyvm */ public abstract class Panel { public static final int Width = 300; public static final int Height = 250; enum State { FlyIn, Normal, FlyOut } private State state = State.FlyIn; private Point2i offset; private final Timer flyInTimer = new Timer(20); private final Timer flyOutTimer = new Timer(20); private final int MaxDistance = Game.RenderHeight; private Patch frame; private SpriteBase bg; private IAction unset; public Panel(IAction unset) { Game.assets.PageflipSound.play(); offset = new Point2i(0, MaxDistance); this.unset = unset; this.bg = new RectSprite(Game.RenderWidth, Game.RenderHeight, new Color(0, 0, 0, 0.73f)); this.frame = makePatch(false); frame.setPosition((Game.RenderWidth - frame.getWidth()) / 2 + getXOffset(), (Game.RenderHeight - frame.getHeight()) / 2 + getYOffset()); ParticleManager.suspend(); } protected int getXOffset() { return 0; } protected int getYOffset() { return 0; } protected int getWidth() { return Width; } protected int getHeight() { return Height; } protected boolean isNormal() { return state == State.Normal; } protected Patch makePatch(boolean charred) { final int width = getWidth(); final int height = getHeight(); if (charred) { return Patch.makeCharred(width, height); } else { return Patch.makeParchment(width, height); } } protected int getFrameX() { return frame.x; } protected int getFrameY() { return frame.y; } protected static int getFrameWidth() { return Width; } protected abstract void drawSelf(Point2i offset); protected void doUnset() { unset.eval(); ParticleManager.resume(); } public void cancel() { setState(State.FlyOut); Game.assets.PageflipoutSound.play(); } private void setState(State newState) { state = newState; } public void update() { ParticleManager.suspend(); if (state == State.Normal && Controls.Cancel.justPressed()) { cancel(); return; } if (state == State.FlyIn) { if (Controls.Enter.justPressed() && flyInTimer.getValue() > 2) { finishFlyIn(); return; } updateFlyIn(); } else if (state == State.FlyOut) { if (Controls.Enter.justPressed() && flyOutTimer.getValue() > 2) { finishFlyOut(); return; } updateFlyOut(); } else if (state == State.Normal) { updateNormal(); } } private void finishFlyOut() { setState(State.Normal);//just in case?... offset = new Point2i(0, MaxDistance); doUnset(); } private void updateFlyOut() { if (flyOutTimer.incrementUntilDone()) { flyOutTimer.reset(); finishFlyOut(); return; } offset = new Point2i(0, (int) (flyOutTimer.getProgress2() * MaxDistance)); } private void finishFlyIn() { setState(State.Normal); offset = new Point2i(0, 0); } private void updateFlyIn() { if (flyInTimer.incrementUntilDone()) { finishFlyIn(); return; } offset = new Point2i(0, (int) (flyInTimer.getOneMinusProgress2() * MaxDistance)); } protected void updateNormal() { } protected void changeUnsetter(IAction unset) { this.unset = unset; } public void draw() { if (state == State.FlyIn) { bg.setAlpha(flyInTimer.getProgress()); } else if (state == State.FlyOut) { bg.setAlpha(1 - flyOutTimer.getProgress()); } else { bg.setAlpha(1); } bg.draw(); frame.draw(offset); drawSelf(offset); } }