src/object/pulsing_light.hpp

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00001 //  SuperTux - Pulsing Light
00002 //  Copyright (C) 2006 Christoph Sommer <christoph.sommer@2006.expires.deltadevelopment.de>
00003 //
00004 //  This program is free software: you can redistribute it and/or modify
00005 //  it under the terms of the GNU General Public License as published by
00006 //  the Free Software Foundation, either version 3 of the License, or
00007 //  (at your option) any later version.
00008 //
00009 //  This program is distributed in the hope that it will be useful,
00010 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012 //  GNU General Public License for more details.
00013 //
00014 //  You should have received a copy of the GNU General Public License
00015 //  along with this program.  If not, see <http://www.gnu.org/licenses/>.
00016 
00017 #ifndef HEADER_SUPERTUX_OBJECT_PULSING_LIGHT_HPP
00018 #define HEADER_SUPERTUX_OBJECT_PULSING_LIGHT_HPP
00019 
00020 #include "object/light.hpp"
00021 
00022 class Sprite;
00023 
00027 class PulsingLight : public Light
00028 {
00029 public:
00030   PulsingLight(const Vector& center, float cycle_len = 5.0, float min_alpha = 0.0, float max_alpha = 1.0, const Color& color = Color(1.0, 1.0, 1.0, 1.0));
00031   virtual ~PulsingLight();
00032 
00033   void update(float elapsed_time);
00034   void draw(DrawingContext& context);
00035 
00036 protected:
00037   float min_alpha; 
00038   float max_alpha; 
00039   float cycle_len; 
00041   float t; 
00042 };
00043 
00044 #endif
00045 
00046 /* EOF */

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