3 // SuperTux - A Jump'n Run
4 // Copyright (C) 2004 Matthias Braun <matze@braunis.de
6 // This program is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU General Public License
8 // as published by the Free Software Foundation; either version 2
9 // of the License, or (at your option) any later version.
11 // This program is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License
17 // along with this program; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 #include "background.h"
23 #include "app/globals.h"
25 #include "video/drawing_context.h"
26 #include "lisp/lisp.h"
27 #include "lisp/writer.h"
29 Background::Background()
30 : type(INVALID), layer(LAYER_BACKGROUND0), image(0)
34 Background::Background(const lisp::Lisp& reader)
35 : type(INVALID), layer(LAYER_BACKGROUND0), image(0)
37 reader.get("layer", layer);
38 if(reader.get("image", imagefile)
39 && reader.get("speed", speed)) {
40 set_image(imagefile, speed);
43 std::vector <unsigned int> bkgd_top_color, bkgd_bottom_color;
44 if(reader.get_vector("top_color", bkgd_top_color) &&
45 reader.get_vector("bottom_color", bkgd_bottom_color))
46 set_gradient(Color(bkgd_top_color), Color(bkgd_bottom_color));
49 Background::~Background()
55 Background::write(lisp::Writer& writer)
60 writer.start_list("background");
63 writer.write_string("image", imagefile);
64 writer.write_float("speed", speed);
65 } else if(type == GRADIENT) {
66 std::vector <unsigned int> bkgd_top_color, bkgd_bottom_color;
67 bkgd_top_color.push_back(gradient_top.red);
68 bkgd_top_color.push_back(gradient_top.green);
69 bkgd_top_color.push_back(gradient_top.blue);
70 bkgd_bottom_color.push_back(gradient_top.red);
71 bkgd_bottom_color.push_back(gradient_top.green);
72 bkgd_bottom_color.push_back(gradient_top.blue);
73 writer.write_int_vector("top_color", bkgd_top_color);
74 writer.write_int_vector("bottom_color", bkgd_bottom_color);
76 writer.write_int("layer", layer);
78 writer.end_list("background");
82 Background::action(float)
87 Background::set_image(const std::string& name, float speed)
90 this->imagefile = name;
94 image = new Surface(datadir + "/images/background/" + name, false);
98 Background::set_gradient(Color top, Color bottom)
102 gradient_bottom = bottom;
105 image = new Surface(top, bottom, screen->w, screen->h);
109 Background::draw(DrawingContext& context)
111 if(type == GRADIENT) {
112 context.push_transform();
113 context.set_translation(Vector(0, 0));
114 context.draw_surface(image, Vector(0, 0), layer);
115 context.pop_transform();
116 } else if(type == IMAGE) {
120 int sx = int(-context.get_translation().x * speed) % image->w - image->w;
121 int sy = int(-context.get_translation().y * speed) % image->h - image->h;
122 context.push_transform();
123 context.set_translation(Vector(0, 0));
124 for(int x = sx; x < screen->w; x += image->w)
125 for(int y = sy; y < screen->h; y += image->h)
126 context.draw_surface(image, Vector(x, y), layer);
127 context.pop_transform();