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/* |
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* The ManaPlus Client |
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* Copyright (C) 2009-2010 The Mana Developers |
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* Copyright (C) 2011-2019 The ManaPlus Developers |
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* Copyright (C) 2019-2021 Andrei Karas |
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* |
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* This file is part of The ManaPlus Client. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#include "resources/ambientlayer.h" |
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#include "const/render/graphics.h" |
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#include "render/graphics.h" |
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#include "resources/imagehelper.h" |
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#include "resources/image/image.h" |
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#include "resources/loaders/rescaledloader.h" |
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#include "debug.h" |
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AmbientLayer::AmbientLayer(const std::string &name, |
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Image *const img, |
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const float parallaxX, |
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const float parallaxY, |
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const float posX, |
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const float posY, |
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const float speedX, |
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const float speedY, |
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const bool keepRatio, |
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const int mask) : |
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MemoryCounter(), |
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mName(name), |
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mImage(img), |
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mParallaxX(parallaxX), |
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mParallaxY(parallaxY), |
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mPosX(posX), |
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mPosY(posY), |
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mSpeedX(speedX), |
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mSpeedY(speedY), |
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mMask(mask), |
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mKeepRatio(keepRatio) |
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{ |
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if (mImage == nullptr) |
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return; |
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if (keepRatio && |
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imageHelper->useOpenGL() == RENDER_SOFTWARE) |
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{ |
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const int width = mainGraphics->mWidth; |
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const int height = mainGraphics->mHeight; |
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if (width != defaultScreenWidth && height != defaultScreenHeight) |
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{ |
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// Rescale the overlay to keep the ratio as if we were on |
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// the default resolution... |
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Image *const rescaledOverlay = Loader::getRescaled( |
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mImage, |
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CAST_S32(mImage->mBounds.w) / |
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defaultScreenWidth * width, |
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CAST_S32(mImage->mBounds.h) / |
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defaultScreenHeight * height); |
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if (rescaledOverlay != nullptr) |
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mImage = rescaledOverlay; |
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else |
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mImage->incRef(); |
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return; |
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} |
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} |
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mImage->incRef(); |
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} |
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AmbientLayer::~AmbientLayer() |
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{ |
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if (mImage != nullptr) |
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{ |
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mImage->decRef(); |
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mImage = nullptr; |
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} |
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} |
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void AmbientLayer::update(const int timePassed, const float dx, const float dy) |
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{ |
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if (mImage == nullptr) |
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return; |
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const float time = static_cast<float>(timePassed) / 10; |
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// Self scrolling of the overlay |
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mPosX -= mSpeedX * time; |
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mPosY -= mSpeedY * time; |
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// Parallax scrolling |
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mPosX += dx * mParallaxX; |
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mPosY += dy * mParallaxY; |
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const SDL_Rect &rect = mImage->mBounds; |
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const float imgW = static_cast<float>(rect.w); |
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const float imgH = static_cast<float>(rect.h); |
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// Wrap values |
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while (mPosX > imgW) |
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mPosX -= imgW; |
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while (mPosX < 0) |
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mPosX += imgW; |
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while (mPosY > imgH) |
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mPosY -= imgH; |
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while (mPosY < 0) |
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mPosY += imgH; |
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} |
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void AmbientLayer::draw(Graphics *const graphics, const int x, |
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const int y) const |
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{ |
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if (mImage == nullptr) |
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return; |
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if (imageHelper->useOpenGL() == RENDER_SOFTWARE || |
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!mKeepRatio) |
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{ |
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graphics->drawPattern(mImage, CAST_S32(-mPosX), |
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CAST_S32(-mPosY), x + CAST_S32(mPosX), |
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y + CAST_S32(mPosY)); |
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} |
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else |
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{ |
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graphics->drawRescaledPattern(mImage, CAST_S32(-mPosX), |
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CAST_S32(-mPosY), x + CAST_S32(mPosX), |
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y + CAST_S32(mPosY), |
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CAST_S32(mImage->mBounds.w) |
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/ defaultScreenWidth * graphics->mWidth, |
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CAST_S32(mImage->mBounds.h) / defaultScreenHeight |
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* graphics->mHeight); |
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} |
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} |
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int AmbientLayer::calcMemoryLocal() const |
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{ |
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return static_cast<int>(sizeof(AmbientLayer) + |
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mName.capacity()); |
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} |