imageparticle.cpp

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/*
 * The ManaPlus Client
 * Copyright (C) 2006-2009 The Mana World Development Team
 * Copyright (C) 2009-2010 The Mana Developers
 * Copyright (C) 2011-2019 The ManaPlus Developers
 * Copyright (C) 2019-2021 Andrei Karas
 *
 * 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 "particle/imageparticle.h"
 
#include "render/graphics.h"
 
#include "resources/image/image.h"
 
#include "debug.h"
 
StringIntMap ImageParticle::imageParticleCountByName;
 
ImageParticle::ImageParticle(Image *restrict const image) :
 Particle()
{
 mType = ParticleType::Image;
 mImage = image;
 if (mImage != nullptr)
 {
 mImage->incRef();
 
 const std::string &restrict name = mImage->mIdPath;
 StringIntMapIter it
 = ImageParticle::imageParticleCountByName.find(name);
 if (it == ImageParticle::imageParticleCountByName.end())
 ImageParticle::imageParticleCountByName[name] = 1;
 else
 (*it).second ++;
 }
}
 
void ImageParticle::draw(Graphics *restrict const graphics,
 const int offsetX,
 const int offsetY) const restrict2
{
 FUNC_BLOCK("ImageParticle::draw", 1)
 if (mAlive != AliveStatus::ALIVE || (mImage == nullptr))
 return;
 
 const int w = mImage->mBounds.w;
 const int h = mImage->mBounds.h;
 const int screenX = CAST_S32(mPos.x)
 + offsetX - w / 2;
 const int screenY = CAST_S32(mPos.y) - CAST_S32(mPos.z)
 + offsetY - h / 2;
 
 // Check if on screen
 if (screenX + w < 0 ||
 screenX > graphics->mWidth ||
 screenY + h < 0 ||
 screenY > graphics->mHeight)
 {
 return;
 }
 
 float alphafactor = mAlpha;
 
 if ((mFadeOut != 0) && mLifetimeLeft > -1 && mLifetimeLeft < mFadeOut)
 {
 alphafactor *= static_cast<float>(mLifetimeLeft)
 / static_cast<float>(mFadeOut);
 }
 
 if ((mFadeIn != 0) && mLifetimePast < mFadeIn)
 {
 alphafactor *= static_cast<float>(mLifetimePast)
 / static_cast<float>(mFadeIn);
 }
 
 mImage->setAlpha(alphafactor);
 graphics->drawImage(mImage, screenX, screenY);
}