2 // Copyright (C) 2006 Matthias Braun <matze@braunis.de>
4 // This program is free software: you can redistribute it and/or modify
5 // it under the terms of the GNU General Public License as published by
6 // the Free Software Foundation, either version 3 of the License, or
7 // (at your option) any later version.
9 // This program is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License
15 // along with this program. If not, see <http://www.gnu.org/licenses/>.
17 #include "supertux/textscroller.hpp"
19 #include "audio/sound_manager.hpp"
20 #include "control/joystickkeyboardcontroller.hpp"
21 #include "lisp/parser.hpp"
22 #include "supertux/fadeout.hpp"
23 #include "supertux/info_box_line.hpp"
24 #include "supertux/globals.hpp"
25 #include "supertux/mainloop.hpp"
26 #include "supertux/resources.hpp"
27 #include "util/reader.hpp"
28 #include "video/drawing_context.hpp"
30 static const float DEFAULT_SPEED = 20;
31 static const float LEFT_BORDER = 50;
32 static const float SCROLL = 60;
34 TextScroller::TextScroller(const std::string& filename) :
43 defaultspeed = DEFAULT_SPEED;
47 std::string background_file;
51 const lisp::Lisp* root = parser.parse(filename);
53 const lisp::Lisp* text_lisp = root->get_lisp("supertux-text");
55 throw std::runtime_error("File isn't a supertux-text file");
57 if(!text_lisp->get("text", text))
58 throw std::runtime_error("file doesn't contain a text field");
59 if(!text_lisp->get("background", background_file))
60 throw std::runtime_error("file doesn't contain a background file");
61 text_lisp->get("speed", defaultspeed);
62 text_lisp->get("music", music);
63 } catch(std::exception& e) {
64 std::ostringstream msg;
65 msg << "Couldn't load file '" << filename << "': " << e.what() << std::endl;
66 throw std::runtime_error(msg.str());
69 // Split text string lines into a vector
70 lines = InfoBoxLine::split(text, SCREEN_WIDTH - 2*LEFT_BORDER);
72 // load background image
73 background.reset(new Surface("images/background/" + background_file));
79 TextScroller::~TextScroller()
81 for(std::vector<InfoBoxLine*>::iterator i = lines.begin(); i != lines.end(); i++) delete *i;
87 sound_manager->play_music(music);
91 TextScroller::update(float elapsed_time)
93 if(g_main_controller->hold(Controller::UP)) {
94 speed = -defaultspeed*5;
95 } else if(g_main_controller->hold(Controller::DOWN)) {
96 speed = defaultspeed*5;
100 if(g_main_controller->pressed(Controller::JUMP)
101 || g_main_controller->pressed(Controller::ACTION)
102 || g_main_controller->pressed(Controller::MENU_SELECT))
104 if(g_main_controller->pressed(Controller::PAUSE_MENU)) {
105 g_main_loop->exit_screen(new FadeOut(0.5));
108 scroll += speed * elapsed_time;
115 TextScroller::draw(DrawingContext& context)
117 context.draw_filled_rect(Vector(0, 0), Vector(SCREEN_WIDTH, SCREEN_HEIGHT),
118 Color(0.6f, 0.7f, 0.8f, 0.5f), 0);
119 context.draw_surface(background.get(), Vector(SCREEN_WIDTH/2 - background->get_width()/2 , SCREEN_HEIGHT/2 - background->get_height()/2), 0);
121 float y = SCREEN_HEIGHT - scroll;
122 for(size_t i = 0; i < lines.size(); i++) {
123 if (y + lines[i]->get_height() >= 0 && SCREEN_HEIGHT - y >= 0) {
124 lines[i]->draw(context, Rect(LEFT_BORDER, y, SCREEN_WIDTH - 2*LEFT_BORDER, y), LAYER_GUI);
127 y += lines[i]->get_height();
130 if(y < 0 && !fading ) {
132 g_main_loop->exit_screen(new FadeOut(0.5));