1 #include <msp/time/utils.h>
7 Demo::Demo(Graphics::Window &window, Graphics::GLContext &gl_ctx, DataFile::Collection &r):
15 things["window"] = static_cast<GL::View *>(&view);
17 sequencer.signal_finished.connect(signal_finished);
28 void Demo::set_fixed_framerate(float fps)
30 frame_interval = Time::sec/fps;
33 void Demo::enable_music()
36 music_source = new AL::Source;
38 streamer = new AL::Streamer(*music_source);
41 void Demo::play_music(const string &fn)
49 music_io = resources.open_raw(fn);
50 music_decoder = AL::SoundDecoder::open_io(*music_io);
51 float beat = sequencer.get_current_beat();
54 float time = beat*60/sequencer.get_beats_per_minute();
55 unsigned bytes_per_sec = music_decoder->get_frequency()*get_unit_size(music_decoder->get_format());
56 music_decoder->seek(time*bytes_per_sec);
58 streamer->play(*music_decoder);
63 Time::TimeStamp t = Time::now();
64 Time::TimeDelta dt = (last_tick ? frame_interval ? frame_interval : t-last_tick : Time::zero);
68 next_frame = t+frame_interval;
76 void Demo::seek(const Time::TimeDelta &pos)
78 sequencer.seek(pos*sequencer.get_beats_per_minute()/Time::min);