--- /dev/null
+// $Id: background.cpp 3144 2006-03-31 10:31:03Z matzebraun $
+//
+// SuperTux - A Jump'n Run
+// Copyright (C) 2004 Matthias Braun <matze@braunis.de
+//
+// 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 (at your option) 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, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#include <config.h>
+
+#include <stdexcept>
+#include "gradient.hpp"
+#include "camera.hpp"
+#include "video/drawing_context.hpp"
+#include "lisp/lisp.hpp"
+#include "lisp/writer.hpp"
+#include "object_factory.hpp"
+#include "resources.hpp"
+#include "main.hpp"
+#include "msg.hpp"
+
+Gradient::Gradient()
+ : layer(LAYER_BACKGROUND0)
+{
+}
+
+Gradient::Gradient(const lisp::Lisp& reader)
+ : layer(LAYER_BACKGROUND0)
+{
+ reader.get("layer", layer);
+ std::vector<float> bkgd_top_color, bkgd_bottom_color;
+ if(!reader.get_vector("top_color", bkgd_top_color) ||
+ !reader.get_vector("bottom_color", bkgd_bottom_color))
+ throw std::runtime_error("Must specify top_color and bottom_color in gradient");
+
+ gradient_top = Color(bkgd_top_color);
+ gradient_bottom = Color(bkgd_bottom_color);
+}
+
+Gradient::~Gradient()
+{
+}
+
+void
+Gradient::write(lisp::Writer& writer)
+{
+ writer.start_list("gradient");
+
+ std::vector<float> bkgd_top_color, bkgd_bottom_color;
+ bkgd_top_color.push_back(gradient_top.red);
+ bkgd_top_color.push_back(gradient_top.green);
+ bkgd_top_color.push_back(gradient_top.blue);
+ bkgd_bottom_color.push_back(gradient_bottom.red);
+ bkgd_bottom_color.push_back(gradient_bottom.green);
+ bkgd_bottom_color.push_back(gradient_bottom.blue);
+ writer.write_float_vector("top_color", bkgd_top_color);
+ writer.write_float_vector("bottom_color", bkgd_bottom_color);
+
+ writer.write_int("layer", layer);
+
+ writer.end_list("gradient");
+}
+
+void
+Gradient::update(float)
+{
+}
+
+void
+Gradient::set_gradient(Color top, Color bottom)
+{
+ gradient_top = top;
+ gradient_bottom = bottom;
+
+ if (gradient_top.red > 1.0 || gradient_top.green > 1.0
+ || gradient_top.blue > 1.0 || gradient_top.alpha > 1.0)
+ msg_warning("top gradient color has values above 1.0");
+ if (gradient_bottom.red > 1.0 || gradient_bottom.green > 1.0
+ || gradient_bottom.blue > 1.0 || gradient_bottom.alpha > 1.0)
+ msg_warning("bottom gradient color has values above 1.0");
+}
+
+void
+Gradient::draw(DrawingContext& context)
+{
+ context.push_transform();
+ context.set_translation(Vector(0, 0));
+ context.draw_gradient(gradient_top, gradient_bottom, layer);
+ context.pop_transform();
+}
+
+IMPLEMENT_FACTORY(Gradient, "gradient");
--- /dev/null
+// $Id: background.hpp 3144 2006-03-31 10:31:03Z matzebraun $
+//
+// SuperTux - A Jump'n Run
+// Copyright (C) 2006 Matthias Braun <matze@braunis.de
+//
+// 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 (at your option) 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, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#ifndef SUPERTUX_GRADIENT_H
+#define SUPERTUX_GRADIENT_H
+
+#include <memory>
+#include "video/surface.hpp"
+#include "video/drawing_context.hpp"
+#include "game_object.hpp"
+#include "serializable.hpp"
+
+class DisplayManager;
+
+namespace lisp {
+class Lisp;
+}
+
+class Gradient : public GameObject, public Serializable
+{
+public:
+ Gradient();
+ Gradient(const lisp::Lisp& reader);
+ virtual ~Gradient();
+
+ virtual void write(lisp::Writer& writer);
+
+ void set_gradient(Color top, Color bottom);
+
+ Color get_gradient_top() const
+ { return gradient_top; }
+
+ Color get_gradient_bottom() const
+ { return gradient_bottom; }
+
+ virtual void update(float elapsed_time);
+
+ virtual void draw(DrawingContext& context);
+
+private:
+ int layer;
+ Color gradient_top, gradient_bottom;
+};
+
+#endif /*SUPERTUX_BACKGROUND_H*/
+