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https://github.com/AquariaOSE/Aquaria.git
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66 lines
1.6 KiB
C++
66 lines
1.6 KiB
C++
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/*
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Copyright (C) 2007, 2010 - Bit-Blot
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This file is part of Aquaria.
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Aquaria is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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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.
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See the GNU General Public License for more details.
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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, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "LensFlare.h"
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#include "Core.h"
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LensFlare::LensFlare()
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{
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cull = false;
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inc = 0.5;
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maxLen = 1500;
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}
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void LensFlare::addFlare(const std::string &tex, Vector color, int w, int h)
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{
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Quad *q = new Quad(tex, Vector(0,0,0));
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q->color = color;
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q->setBlendType(BLEND_ADD);
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if (w != -1)
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q->setWidth(w);
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if (h != -1)
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q->setHeight(h);
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flares.push_back(q);
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addChild(q, PM_POINTER);
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}
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void LensFlare::onUpdate(float dt)
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{
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//const int maxLen = 1500;
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RenderObject::onUpdate(dt);
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Vector v = core->screenCenter - this->position;
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if (v.getSquaredLength2D() > sqr(maxLen))
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return;
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else
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{
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float l = v.getLength2D();
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float a = 1.0f-(l/(float)maxLen);
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a*=0.8f;
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//Vector vbit = v*(1.0f/flares.size());
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Vector vbit = v;
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vbit *= inc;
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for (int i = 0; i < flares.size(); i++)
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{
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flares[i]->position = vbit*i;
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flares[i]->alpha = a;
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}
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}
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}
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