module streamingplayer; import amplifier; import std.stdio : writeln; import std.conv : to; class StreamingPlayer { private string description; private int currentChapter; private Amplifier amplifier; private string movie; this(string description, Amplifier amplifier) { this.description = description; this.amplifier = amplifier; } void on() { writeln(description ~ " on"); } void off() { writeln(description ~ " off"); } void play(string movie) { this.movie = movie; currentChapter = 0; writeln(description ~ " playing \"" ~ movie ~ "\""); } void play(int chapter) { if (movie is null) { writeln(description ~ " can't play chapter " ~ chapter.to!string ~ " on movie selected"); } else { currentChapter = chapter; writeln(description ~ " playing chapter " ~ currentChapter.to!string ~ " off \"" ~ movie ~ "\""); } } void stop() { currentChapter = 0; writeln(description ~ " stopped \"" ~ movie ~ "\""); } void pause() { writeln(description ~ " paused \"" ~ movie ~ "\""); } void setTwoChannelAudio() { writeln(description ~ " set two channel audio"); } void setSurroundAudio() { writeln(description ~ " set surround audio"); } override string toString() const { return description; } }