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Diffstat (limited to '')
| -rw-r--r-- | Game/Code/Classes/UPlaylist.pas | 398 |
1 files changed, 398 insertions, 0 deletions
diff --git a/Game/Code/Classes/UPlaylist.pas b/Game/Code/Classes/UPlaylist.pas new file mode 100644 index 00000000..585f9271 --- /dev/null +++ b/Game/Code/Classes/UPlaylist.pas @@ -0,0 +1,398 @@ +unit UPlaylist;
+
+interface
+
+type
+ TPlaylistItem = record
+ Artist: String;
+ Title: String;
+ SongID: Integer;
+ end;
+
+ APlaylistItem = array of TPlaylistItem;
+
+ TPlaylist = record
+ Name: String;
+ Filename: String;
+ Items: APlaylistItem;
+ end;
+
+ APlaylist = array of TPlaylist;
+
+ //----------
+ //TPlaylistManager - Class for Managing Playlists (Loading, Displaying, Saving)
+ //----------
+ TPlaylistManager = class
+ private
+
+ public
+ Mode: Byte; //Current Playlist Mode for SongScreen
+ CurPlayList: Cardinal;
+ CurItem: Cardinal;
+
+ Playlists: APlaylist;
+
+ constructor Create;
+ Procedure LoadPlayLists;
+ Function LoadPlayList(Index: Cardinal; Filename: String): Boolean;
+ Procedure SavePlayList(Index: Cardinal);
+
+ Procedure SetPlayList(Index: Cardinal);
+
+ Function AddPlaylist(Name: String): Cardinal;
+
+ Procedure AddItem(const SongID: Cardinal; const iPlaylist: Integer = -1);
+ Procedure DelItem(const iItem: Cardinal; const iPlaylist: Integer = -1);
+
+ Procedure GetNames(var PLNames: array of String);
+ Function GetIndexbySongID(const SongID: Cardinal; const iPlaylist: Integer = -1): Integer;
+ end;
+
+ {Modes:
+ 0: Standard Mode
+ 1: PlayList Mode
+ 2: Category Mode}
+
+ var
+ PlayListMan: TPlaylistManager;
+
+
+implementation
+uses USongs, ULog, UPliki, UGraphic, UThemes, SysUtils;
+
+//----------
+//Create - Construct Class - Dummy for now
+//----------
+constructor TPlayListManager.Create;
+begin
+ LoadPlayLists;
+end;
+
+//----------
+//LoadPlayLists - Load list of Playlists from PlayList Folder
+//----------
+Procedure TPlayListManager.LoadPlayLists;
+var
+ SR: TSearchRec;
+ Len: Integer;
+begin
+ SetLength(Playlists, 0);
+
+ if FindFirst(PlayListPath + '*.upl', 0, SR) = 0 then
+ begin
+ repeat
+ Len := Length(Playlists);
+ SetLength(Playlists, Len +1);
+
+ if not LoadPlayList (Len, Sr.Name) then
+ SetLength(Playlists, Len);
+
+ until FindNext(SR) <> 0;
+ FindClose(SR);
+ end;
+end;
+
+//----------
+//LoadPlayList - Load a Playlist in the Array
+//----------
+Function TPlayListManager.LoadPlayList(Index: Cardinal; Filename: String): Boolean;
+ var
+ F: TextFile;
+ Line: String;
+ PosDelimiter: Integer;
+ SongID: Integer;
+ Len: Integer;
+
+ Function FindSong(Artist, Title: String): Integer;
+ var I: Integer;
+ begin
+ Result := -1;
+
+ For I := low(CatSongs.Song) to high(CatSongs.Song) do
+ begin
+ if (CatSongs.Song[I].Title = Title) AND (CatSongs.Song[I].Artist = Artist) then
+ begin
+ Result := I;
+ Break;
+ end;
+ end;
+ end;
+begin
+ if not FileExists(PlayListPath + Filename) then
+ begin
+ Log.LogError('Could not load Playlist: ' + Filename);
+ Result := False;
+ Exit;
+ end;
+ Result := True;
+
+ //Load File
+ AssignFile(F, PlayListPath + FileName);
+ Reset(F);
+
+ //Set Filename
+ PlayLists[Index].Filename := Filename;
+ PlayLists[Index].Name := '';
+
+ //Read Until End of File
+ While not Eof(F) do
+ begin
+ //Read Curent Line
+ Readln(F, Line);
+
+ if (Length(Line) > 0) then
+ begin
+ PosDelimiter := Pos(':', Line);
+ if (PosDelimiter <> 0) then
+ begin
+ //Comment or Name String
+ if (Line[1] = '#') then
+ begin
+ //Found Name Value
+ if (Uppercase(Trim(copy(Line, 2, PosDelimiter - 2))) = 'NAME') then
+ PlayLists[Index].Name := Trim(copy(Line, PosDelimiter + 1,Length(Line) - PosDelimiter))
+
+ end
+ //Song Entry
+ else
+ begin
+ SongID := FindSong(Trim(copy(Line, 1, PosDelimiter - 1)), Trim(copy(Line, PosDelimiter + 1, Length(Line) - PosDelimiter)));
+ if (SongID <> -1) then
+ begin
+ Len := Length(PlayLists[Index].Items);
+ SetLength(PlayLists[Index].Items, Len + 1);
+
+ PlayLists[Index].Items[Len].SongID := SongID;
+
+ PlayLists[Index].Items[Len].Artist := Trim(copy(Line, 1, PosDelimiter - 1));
+ PlayLists[Index].Items[Len].Title := Trim(copy(Line, PosDelimiter + 1, Length(Line) - PosDelimiter));
+ end
+ else Log.LogError('Could not find Song in Playlist: ' + PlayLists[Index].Filename + ', ' + Line);
+ end;
+ end;
+ end;
+ end;
+
+ //If no special name is given, use Filename
+ if PlayLists[Index].Name = '' then
+ begin
+ PlayLists[Index].Name := ChangeFileExt(FileName, '');
+ end;
+
+ //Finish (Close File)
+ CloseFile(F);
+end;
+
+//----------
+//SavePlayList - Saves the specified Playlist
+//----------
+Procedure TPlayListManager.SavePlayList(Index: Cardinal);
+var
+ F: TextFile;
+ I: Integer;
+begin
+ if (Not FileExists(PlaylistPath + Playlists[Index].Filename)) OR (Not FileisReadOnly(PlaylistPath + Playlists[Index].Filename)) then
+ begin
+
+ //open File for Rewriting
+ AssignFile(F, PlaylistPath + Playlists[Index].Filename);
+ try
+ Rewrite(F);
+
+ //Write Version (not nessecary but helpful)
+ WriteLn(F, '######################################');
+ WriteLn(F, '#Ultrastar Deluxe Playlist Format v1.0');
+ WriteLn(F, '#Playlist "' + Playlists[Index].Name + '" with ' + InttoStr(Length(Playlists[Index].Items)) + ' Songs.');
+ WriteLn(F, '######################################');
+
+ //Write Name Information
+ WriteLn(F, '#Name: ' + Playlists[Index].Name);
+
+ //Write Song Information
+ WriteLn(F, '#Songs:');
+
+ For I := 0 to high(Playlists[Index].Items) do
+ begin
+ WriteLn(F, Playlists[Index].Items[I].Artist + ' : ' + Playlists[Index].Items[I].Title);
+ end;
+
+ finally
+ CloseFile(F);
+ end;
+ end;
+end;
+
+//----------
+//SetPlayList - Display a Playlist in CatSongs
+//----------
+Procedure TPlayListManager.SetPlayList(Index: Cardinal);
+var
+ I: Integer;
+begin
+ If (Index > High(PlayLists)) then
+ exit;
+
+ //Hide all Songs
+ For I := 0 to high(CatSongs.Song) do
+ CatSongs.Song[I].Visible := False;
+
+ //Show Songs in PL
+ For I := 0 to high(PlayLists[Index].Items) do
+ begin
+ CatSongs.Song[PlayLists[Index].Items[I].SongID].Visible := True;
+ end;
+
+ //Set CatSongsMode + Playlist Mode
+ CatSongs.CatNumShow := -3;
+ Mode := 1;
+
+ //Show Cat in Topleft:
+ ScreenSong.ShowCatTLCustom(Format(Theme.Playlist.CatText,[Playlists[Index].Name]));
+
+ //Fix SongSelection
+ ScreenSong.Interaction := 0;
+ ScreenSong.SelectNext;
+ ScreenSong.FixSelected;
+
+ //Play correct Music
+ ScreenSong.ChangeMusic;
+end;
+
+//----------
+//AddPlaylist - Adds a Playlist and Returns the Index
+//----------
+Function TPlayListManager.AddPlaylist(Name: String): Cardinal;
+var I: Integer;
+begin
+ Result := Length(Playlists);
+ SetLength(Playlists, Result + 1);
+
+ Playlists[Result].Name := Name;
+
+ I := 1;
+
+ if (not FileExists(PlaylistPath + Name + '.upl')) then
+ Playlists[Result].Filename := Name + '.upl'
+ else
+ begin
+ repeat
+ Inc(I);
+ until not FileExists(PlaylistPath + Name + InttoStr(I) + '.upl');
+ Playlists[Result].Filename := Name + InttoStr(I) + '.upl';
+ end;
+
+ //Save new Playlist
+ SavePlayList(Result);
+end;
+
+//----------
+//AddItem - Adds an Item to a specific Playlist
+//----------
+Procedure TPlayListManager.AddItem(const SongID: Cardinal; const iPlaylist: Integer);
+var
+ P: Cardinal;
+ Len: Cardinal;
+begin
+ if iPlaylist = -1 then
+ P := CurPlaylist
+ else if (iPlaylist >= 0) AND (iPlaylist <= high(Playlists)) then
+ P := iPlaylist
+ else
+ exit;
+
+ if (SongID <= High(CatSongs.Song)) AND (NOT CatSongs.Song[SongID].Main) then
+ begin
+ Len := Length(Playlists[P].Items);
+ SetLength(Playlists[P].Items, Len + 1);
+
+ Playlists[P].Items[Len].SongID := SongID;
+ Playlists[P].Items[Len].Title := CatSongs.Song[SongID].Title;
+ Playlists[P].Items[Len].Artist := CatSongs.Song[SongID].Artist;
+
+ //Save Changes
+ SavePlayList(P);
+
+ //Correct Display when Editing current Playlist
+ if (CatSongs.CatNumShow = -3) and (P = CurPlaylist) then
+ SetPlaylist(P);
+ end;
+end;
+
+//----------
+//DelItem - Deletes an Item from a specific Playlist
+//----------
+Procedure TPlayListManager.DelItem(const iItem: Cardinal; const iPlaylist: Integer);
+var
+ I: Integer;
+ P: Cardinal;
+begin
+ if iPlaylist = -1 then
+ P := CurPlaylist
+ else if (iPlaylist >= 0) AND (iPlaylist <= high(Playlists)) then
+ P := iPlaylist
+ else
+ exit;
+
+ if (iItem <= high(Playlists[P].Items)) then
+ begin
+ //Move all entrys behind deleted one to Front
+ For I := iItem to High(Playlists[P].Items) - 1 do
+ Playlists[P].Items[I] := Playlists[P].Items[I + 1];
+
+ //Delete Last Entry
+ SetLength(PlayLists[P].Items, Length(PlayLists[P].Items) - 1);
+
+ //Save Changes
+ SavePlayList(P);
+ end;
+
+ //Correct Display when Editing current Playlist
+ if (CatSongs.CatNumShow = -3) and (P = CurPlaylist) then
+ SetPlaylist(P);
+end;
+
+//----------
+//GetNames - Writes Playlist Names in a Array
+//----------
+Procedure TPlayListManager.GetNames(var PLNames: array of String);
+var
+ I: Integer;
+ Len: Integer;
+begin
+ Len := High(Playlists);
+
+ if (Length(PLNames) <> Len + 1) then
+ exit;
+
+ For I := 0 to Len do
+ PLNames[I] := Playlists[I].Name;
+end;
+
+//----------
+//GetIndexbySongID - Returns Index in the specified Playlist of the given Song
+//----------
+Function TPlayListManager.GetIndexbySongID(const SongID: Cardinal; const iPlaylist: Integer): Integer;
+var
+ P: Integer;
+ I: Integer;
+begin
+ if iPlaylist = -1 then
+ P := CurPlaylist
+ else if (iPlaylist >= 0) AND (iPlaylist <= high(Playlists)) then
+ P := iPlaylist
+ else
+ exit;
+
+ Result := -1;
+
+ For I := 0 to high(Playlists[P].Items) do
+ begin
+ if (Playlists[P].Items[I].SongID = SongID) then
+ begin
+ Result := I;
+ Break;
+ end;
+ end;
+end;
+
+end.
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