/* * The ManaPlus Client * Copyright (C) 2009-2010 The Mana Developers * Copyright (C) 2011 The ManaPlus Developers * * This file is part of The ManaPlus Client. * * This program 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 2 of the License, or * any later version. * * This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ #include "resources/ambientlayer.h" #include "graphics.h" #include "resources/image.h" #include "resources/resourcemanager.h" #include "debug.h" AmbientLayer::AmbientLayer(Image *img, float parallax, float speedX, float speedY, bool keepRatio): mImage(img), mParallax(parallax), mPosX(0), mPosY(0), mSpeedX(speedX), mSpeedY(speedY), mKeepRatio(keepRatio) { if (!mImage) return; if (keepRatio && !mImage->useOpenGL() /*&& defaultScreenWidth != 0 && defaultScreenHeight != 0*/ && graphics->getWidth() != defaultScreenWidth && graphics->getHeight() != defaultScreenHeight) { // Rescale the overlay to keep the ratio as if we were on // the default resolution... Image *rescaledOverlay = ResourceManager::getInstance()-> getRescaled(mImage, static_cast<int>(mImage->getWidth()) / defaultScreenWidth * graphics->getWidth(), static_cast<int>(mImage->getHeight()) / defaultScreenHeight * graphics->getHeight()); if (rescaledOverlay) mImage = rescaledOverlay; else mImage->incRef(); } else { mImage->incRef(); } } AmbientLayer::~AmbientLayer() { if (mImage) { mImage->decRef(); mImage = 0; } } void AmbientLayer::update(int timePassed, float dx, float dy) { if (!mImage) return; // Self scrolling of the overlay mPosX -= mSpeedX * static_cast<float>(timePassed) / 10; mPosY -= mSpeedY * static_cast<float>(timePassed) / 10; // Parallax scrolling mPosX += dx * mParallax; mPosY += dy * mParallax; int imgW = mImage->getWidth(); int imgH = mImage->getHeight(); // Wrap values while (mPosX > imgW) mPosX -= static_cast<float>(imgW); while (mPosX < 0) mPosX += static_cast<float>(imgW); while (mPosY > imgH) mPosY -= static_cast<float>(imgH); while (mPosY < 0) mPosY += static_cast<float>(imgH); } void AmbientLayer::draw(Graphics *graphics, int x, int y) { if (!mImage) return; if (!mImage->useOpenGL() || !mKeepRatio) { graphics->drawImagePattern(mImage, static_cast<int>(-mPosX), static_cast<int>(-mPosY), x + static_cast<int>(mPosX), y + static_cast<int>(mPosY)); } else { graphics->drawRescaledImagePattern(mImage, static_cast<int>(-mPosX), static_cast<int>(-mPosY), x + static_cast<int>(mPosX), y + static_cast<int>(mPosY), static_cast<int>(mImage->getWidth()) / defaultScreenWidth * graphics->getWidth(), static_cast<int>(mImage->getHeight()) / defaultScreenHeight * graphics->getHeight()); } }