diff options
Diffstat (limited to '')
| -rw-r--r-- | Game/Code/Classes/UDataBase.pas | 294 |
1 files changed, 294 insertions, 0 deletions
diff --git a/Game/Code/Classes/UDataBase.pas b/Game/Code/Classes/UDataBase.pas new file mode 100644 index 00000000..b8b41bc1 --- /dev/null +++ b/Game/Code/Classes/UDataBase.pas @@ -0,0 +1,294 @@ +unit UDataBase;
+
+interface
+
+uses USongs, SQLiteTable3;
+
+//--------------------
+//DataBaseSystem - Class including all DB Methods
+//--------------------
+type
+ TStatResult = record
+ Case Typ: Byte of
+ 0: (Singer: ShortString;
+ Score: Word;
+ Difficulty: Byte;
+ SongArtist: ShortString;
+ SongTitle: ShortString);
+
+ 1: (Player: ShortString;
+ AverageScore: Word);
+
+ 2: (Artist: ShortString;
+ Title: ShortString;
+ TimesSung: Word);
+
+ 3: (ArtistName: ShortString;
+ TimesSungtot: Word);
+ end;
+ AStatResult = Array of TStatResult;
+
+ TDataBaseSystem = class
+ private
+ ScoreDB: TSqliteDatabase;
+ sFilename: string;
+ public
+
+
+ property Filename: String read sFilename;
+
+ Destructor Free;
+
+ Procedure Init(const Filename: string);
+ procedure ReadScore(var Song: TSong);
+ procedure AddScore(var Song: TSong; Level: integer; Name: string; Score: integer);
+ procedure WriteScore(var Song: TSong);
+
+ Function GetStats(var Stats: AStatResult; const Typ, Count: Byte; const Page: Cardinal; const Reversed: Boolean): Boolean;
+ Function GetTotalEntrys(const Typ: Byte): Cardinal;
+ end;
+
+var
+ DataBase: TDataBaseSystem;
+
+implementation
+
+uses IniFiles, SysUtils;
+
+//--------------------
+//Create - Opens Database and Create Tables if not Exist
+//--------------------
+
+Procedure TDataBaseSystem.Init(const Filename: string);
+begin
+ //Open Database
+ ScoreDB := TSqliteDatabase.Create(Filename);
+ sFilename := Filename;
+
+ try
+ //Look for Tables => When not exist Create them
+ if not ScoreDB.TableExists('US_Scores') then
+ ScoreDB.execsql('CREATE TABLE `US_Scores` (`SongID` INT( 11 ) NOT NULL , `Difficulty` INT( 1 ) NOT NULL , `Player` VARCHAR( 150 ) NOT NULL , `Score` INT( 5 ) NOT NULL );');
+
+ if not ScoreDB.TableExists('US_Songs') then
+ ScoreDB.execsql('CREATE TABLE `US_Songs` (`ID` INTEGER PRIMARY KEY, `Artist` VARCHAR( 255 ) NOT NULL , `Title` VARCHAR( 255 ) NOT NULL , `TimesPlayed` int(5) NOT NULL );');
+ //Not possible because of String Limitation to 255 Chars //Need to rewrite Wrapper
+ {if not ScoreDB.TableExists('US_SongCache') then
+ ScoreDB.ExecSQL('CREATE TABLE `US_SongCache` (`Path` VARCHAR( 255 ) NOT NULL , `Filename` VARCHAR( 255 ) NOT NULL , `Title` VARCHAR( 255 ) NOT NULL , `Artist` VARCHAR( 255 ) NOT NULL , `Folder` VARCHAR( 255 ) NOT NULL , `Genre` VARCHAR( 255 ) NOT NULL , `Edition` VARCHAR( 255 ) NOT NULL , `Language` VARCHAR( 255 ) NOT NULL , `Creator` VARCHAR( 255 ) NOT NULL , `Cover` VARCHAR( 255 ) NOT NULL , `Background` VARCHAR( 255 ) NOT NULL , `Video` VARCHAR( 255 ) NOT NULL , `VideoGap` FLOAT NOT NULL , `Gap` FLOAT NOT NULL , `Start` FLOAT NOT NULL , `Finish` INT( 11 ) NOT NULL , `BPM` INT( 5 ) NOT NULL , `Relative` BOOLEAN NOT NULL , `NotesGap` INT( 11 ) NOT NULL);');}
+
+
+ finally
+ //ScoreDB.Free;
+ end;
+
+end;
+
+//--------------------
+//Free - Frees Database
+//--------------------
+Destructor TDataBaseSystem.Free;
+begin
+ ScoreDB.Free;
+end;
+
+//--------------------
+//ReadScore - Read Scores into SongArray
+//--------------------
+procedure TDataBaseSystem.ReadScore(var Song: TSong);
+var
+ TableData: TSqliteTable;
+ Dif: Byte;
+begin
+ //ScoreDB := TSqliteDatabase.Create(sFilename);
+ try
+ try
+ //Search Song in DB
+ TableData := ScoreDB.GetTable('SELECT `Difficulty`, `Player`, `Score` FROM `us_scores` WHERE `SongID` = (SELECT `ID` FROM `us_songs` WHERE `Artist` = "' + Song.Artist + '" AND `Title` = "' + Song.Title + '" LIMIT 1) ORDER BY `Score` DESC LIMIT 15');
+ //Empty Old Scores
+ SetLength (Song.Score[0], 0);
+ SetLength (Song.Score[1], 0);
+ SetLength (Song.Score[2], 0);
+
+ while not TableData.Eof do//Go through all Entrys
+ begin//Add one Entry to Array
+ Dif := StrtoInt(TableData.FieldAsString(TableData.FieldIndex['Difficulty']));
+ if (Dif>=0) AND (Dif<=2) then
+ begin
+ SetLength(Song.Score[Dif], Length(Song.Score[Dif]) + 1);
+
+ Song.Score[Dif, high(Song.Score[Dif])].Name := TableData.FieldAsString(TableData.FieldIndex['Player']);
+ Song.Score[Dif, high(Song.Score[Dif])].Score:= StrtoInt(TableData.FieldAsString(TableData.FieldIndex['Score']));
+ end;
+ TableData.Next;
+ end;
+
+ except //Im Fehlerfall
+ for Dif := 0 to 2 do
+ begin
+ SetLength(Song.Score[Dif], 1);
+ Song.Score[Dif, 1].Name := 'Error Reading ScoreDB';
+ end;
+ end;
+ finally
+ //ScoreDb.Free;
+ end;
+end;
+
+//--------------------
+//AddScore - Add one new Score to DB
+//--------------------
+procedure TDataBaseSystem.AddScore(var Song: TSong; Level: integer; Name: string; Score: integer);
+var
+ID: Integer;
+TableData: TSqliteTable;
+begin
+ //ScoreDB := TSqliteDatabase.Create(sFilename);
+ try
+ //Prevent 0 Scores from being added
+ if (Score > 0) then
+ begin
+
+ ID := ScoreDB.GetTableValue('SELECT `ID` FROM `US_Songs` WHERE `Artist` = "' + Song.Artist + '" AND `Title` = "' + Song.Title + '"');
+ if ID = 0 then //Song doesn't exist -> Create
+ begin
+ ScoreDB.ExecSQL ('INSERT INTO `US_Songs` ( `ID` , `Artist` , `Title` , `TimesPlayed` ) VALUES (NULL , "' + Song.Artist + '", "' + Song.Title + '", "0");');
+ ID := ScoreDB.GetTableValue('SELECT `ID` FROM `US_Songs` WHERE `Artist` = "' + Song.Artist + '" AND `Title` = "' + Song.Title + '"');
+ if ID = 0 then //Could not Create Table
+ exit;
+ end;
+ //Create new Entry
+ ScoreDB.ExecSQL('INSERT INTO `US_Scores` ( `SongID` , `Difficulty` , `Player` , `Score` ) VALUES ("' + InttoStr(ID) + '", "' + InttoStr(Level) + '", "' + Name + '", "' + InttoStr(Score) + '");');
+
+ //Delete Last Position when there are more than 5 Entrys
+ if ScoreDB.GetTableValue('SELECT COUNT(`SongID`) FROM `US_Scores` WHERE `SongID` = "' + InttoStr(ID) + '" AND `Difficulty` = "' + InttoStr(Level) +'"') > 5 then
+ begin
+ TableData := ScoreDB.GetTable('SELECT `Player`, `Score` FROM `US_Scores` WHERE SongID = "' + InttoStr(ID) + '" AND `Difficulty` = "' + InttoStr(Level) +'" ORDER BY `Score` ASC LIMIT 1');
+ ScoreDB.ExecSQL('DELETE FROM `US_Scores` WHERE SongID = "' + InttoStr(ID) + '" AND `Difficulty` = "' + InttoStr(Level) +'" AND `Player` = "' + TableData.FieldAsString(TableData.FieldIndex['Player']) + '" AND `Score` = "' + TableData.FieldAsString(TableData.FieldIndex['Score']) + '"');
+ end;
+
+ end;
+ finally
+ //ScoreDB.Free;
+ end;
+end;
+
+//--------------------
+//WriteScore - Not needed with new System; But used for Increment Played Count
+//--------------------
+procedure TDataBaseSystem.WriteScore(var Song: TSong);
+begin
+ try
+ //Increase TimesPlayed
+ ScoreDB.ExecSQL ('UPDATE `us_songs` SET `TimesPlayed` = `TimesPlayed` + "1" WHERE `Title` = "' + Song.Title + '" AND `Artist` = "' + Song.Artist + '";');
+ except
+
+ end;
+end;
+
+//--------------------
+//GetStats - Write some Stats to Array, Returns True if Chossen Page has Entrys
+//Case Typ of
+//0 - Best Scores
+//1 - Best Singers
+//2 - Most sung Songs
+//3 - Most popular Band
+//--------------------
+Function TDataBaseSystem.GetStats(var Stats: AStatResult; const Typ, Count: Byte; const Page: Cardinal; const Reversed: Boolean): Boolean;
+var
+ Query: String;
+ TableData: TSqliteTable;
+begin
+ Result := False;
+
+ if (Length(Stats) < Count) then
+ Exit;
+
+ {Todo:
+ Add Prevention that only Players with more than 5 Scores are Selected at Typ 2}
+
+ //Create Query
+ Case Typ of
+ 0: Query := 'SELECT `Player` , `Difficulty` , `Score` , `Artist` , `Title` FROM `US_Scores` INNER JOIN `US_Songs` ON (`SongID` = `ID`) ORDER BY `Score`';
+ 1: Query := 'SELECT `Player` , ROUND (Sum(`Score`) / COUNT(`Score`)) FROM `US_Scores` GROUP BY `Player` ORDER BY (Sum(`Score`) / COUNT(`Score`))';
+ 2: Query := 'SELECT `Artist` , `Title` , `TimesPlayed` FROM `US_Songs` ORDER BY `TimesPlayed`';
+ 3: Query := 'SELECT `Artist` , Sum(`TimesPlayed`) FROM `US_Songs` GROUP BY `Artist` ORDER BY Sum(`TimesPlayed`)';
+ end;
+
+ //Add Order Direction
+ If Reversed then
+ Query := Query + ' ASC'
+ else
+ Query := Query + ' DESC';
+
+ //Add Limit
+ Query := Query + ' LIMIT ' + InttoStr(Count * Page) + ', ' + InttoStr(Count) + ';';
+
+ //Execute Query
+ //try
+ TableData := ScoreDB.GetTable(Query);
+ {except
+ exit;
+ end;}
+
+ //if Result empty -> Exit
+ if (TableData.RowCount < 1) then
+ exit;
+
+ //Copy Result to Stats Array
+ while not TableData.Eof do
+ begin
+ Stats[TableData.Row].Typ := Typ;
+
+ Case Typ of
+ 0:begin
+ Stats[TableData.Row].Singer := TableData.Fields[0];
+
+ Stats[TableData.Row].Difficulty := StrtoIntDef(TableData.Fields[1], 0);
+
+ Stats[TableData.Row].Score := StrtoIntDef(TableData.Fields[2], 0){TableData.FieldAsInteger(2)};
+ Stats[TableData.Row].SongArtist := TableData.Fields[3];
+ Stats[TableData.Row].SongTitle := TableData.Fields[4];
+ end;
+
+ 1:begin
+ Stats[TableData.Row].Player := TableData.Fields[0];
+ Stats[TableData.Row].AverageScore := StrtoIntDef(TableData.Fields[1], 0);
+ end;
+
+ 2:begin
+ Stats[TableData.Row].Artist := TableData.Fields[0];
+ Stats[TableData.Row].Title := TableData.Fields[1];
+ Stats[TableData.Row].TimesSung := StrtoIntDef(TableData.Fields[2], 0);
+ end;
+
+ 3:begin
+ Stats[TableData.Row].ArtistName := TableData.Fields[0];
+ Stats[TableData.Row].TimesSungtot := StrtoIntDef(TableData.Fields[1], 0);
+ end;
+
+ end;
+
+ TableData.Next;
+ end;
+
+ Result := True;
+end;
+
+//--------------------
+//GetTotalEntrys - Get Total Num of entrys for a Stats Query
+//--------------------
+Function TDataBaseSystem.GetTotalEntrys(const Typ: Byte): Cardinal;
+var Query: String;
+begin
+ //Create Query
+ Case Typ of
+ 0: Query := 'SELECT COUNT(`SongID`) FROM `US_Scores`;';
+ 1: Query := 'SELECT COUNT(DISTINCT `Player`) FROM `US_Scores`;';
+ 2: Query := 'SELECT COUNT(`ID`) FROM `US_Songs`;';
+ 3: Query := 'SELECT COUNT(DISTINCT `Artist`) FROM `US_Songs`;';
+ end;
+
+ Result := ScoreDB.GetTableValue(Query);
+end;
+
+end.
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