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| { ScoreUtils
by Deefaze [f0xi - 2009]
1.0.0.0 : 07/19/2009
- Scores INI file struc :
section [scores]
count : number of players scores (integer)
section [(0..n)]
playerName : player name (string)
playerScoreLo : low part of player score (integer)
playerScoreHi : high part of player score (integer)
exemple :
[scores]
count=2
[0]
playerName=Titi
playerScoreLo=100
playerScoreHi=0
[1]
playerName=Taz
playerScoreLo=98
playerScoreHi=0
- Score file reading/writing :
You do not need TIniFile objet for read or write scores file,
use TPlayerScores.LoadFromFile or TPlayerScores.SaveToFile methods.
Note : call SaveToFile after adding or deleting operation.
- Score sorting :
TPlayerScores sort automaticaly score at High to Low order,
score at index 0 is the highest score, score at index=count-1 is the lowest score.
- TPlayerScores instance :
You do not need create TPlayerScores object, use ScoreUtils.Scores or ScoreUtils.PlayerScores
variables. PlayerScores is an alias of Scores variable.
- Adding score :
Use TPlayerScores.Add methods. Add is an overloaded method :
function Add: TPlayerScore
Create, Add and return an empty TPlayerScore object
function Add(const PlayerName: string; const PlayerScore: Int64): integer;
Create and Add TPlayerScore objet with PlayerName and PlayerScore arguments, and
return the index of object. Warning : after EndUpdate, index of item
can be changed, use TPlayerScore.Index property for know the current index of
item.
function Add(PlayerScore: TPlayerScore): integer;
Add existing TPlayerScore object, and return the index of object.
Warning : after EndUpdate, index of item can be changed, use
TPlayerScore.Index property for know the current index of item.
- Deleting score :
Use TPayerScores.Delete methods. Delete is an overloaded method :
procedure Delete(const index: integer);
Deleting item at specified index.
procedure Delete(const PlayerName: string);
Deleting all score of specified Player.
Use Clear method to delete all scores.
}
unit ScoreUtils;
interface
uses
Windows, SysUtils, Classes, Controls;
type
TPlayerScore = class;
TPlayerScores = class;
TPlayerScore = class(TPersistent)
private
fOwner : TPlayerScores;
fPlayerName : string;
fPlayerScore : int64;
procedure SetPlayerName(const Value: string);
procedure SetPlayerScore(const Value: int64);
function GetIndex: integer;
protected
procedure Change; virtual;
published
property Index : integer read GetIndex;
property PlayerName : string read fPlayerName write SetPlayerName;
property PlayerScore : int64 read fPlayerScore write SetPlayerScore default 0;
public
constructor Create; virtual;
constructor CreateAdd(AOwner : TPlayerScores); virtual;
procedure Assign(Source : TPersistent); override;
end;
TPlayerScores = class(TComponent)
private
fList : TList;
fUpdateCount : integer;
fOnChange : TNotifyEvent;
fOnAfterSave: TNotifyEvent;
fOnBeforeLoad: TNotifyEvent;
fOnBeforeSave: TNotifyEvent;
fOnAfterLoad: TNotifyEvent;
function GetItem(Index: Integer): TPlayerScore;
procedure SetItem(Index: Integer; const Value: TPlayerScore);
protected
procedure Change; virtual;
public
property Items[Index: Integer]: TPlayerScore read GetItem write SetItem; default;
function Count: integer;
function BeginUpdate: integer;
function EndUpdate: integer;
function Add: TPlayerScore; overload;
function Add(PlayerScore : TPlayerScore): integer; overload;
function Add(const PlayerName: string; const PlayerScore: int64): integer; overload;
function IndexOf(Item: TPlayerScore): Integer;
procedure Delete(const Index: integer); overload;
procedure Delete(const PlayerName: string); overload;
procedure Sort;
procedure Clear;
procedure SaveToFile(const FileName: string);
procedure LoadFromFile(const FileName: string);
public
property OnChange : TNotifyEvent read fOnChange write fOnChange;
property OnBeforeLoad : TNotifyEvent read fOnBeforeLoad write fOnBeforeLoad;
property OnAfterLoad : TNotifyEvent read fOnAfterLoad write fOnAfterLoad;
property OnBeforeSave : TNotifyEvent read fOnBeforeSave write fOnBeforeSave;
property OnAfterSave : TNotifyEvent read fOnAfterSave write fOnAfterSave;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
end;
var
Scores, PlayerScores : TPlayerScores;
type
bits64rec = record
case integer of
0: (i64 : int64);
1: (i8 : array[0..7] of shortint);
2: (i16 : array[0..3] of smallint);
3: (i32 : array[0..1] of longint);
4: (ui64 : UInt64);
5: (ui8 : array[0..7] of byte);
6: (ui16 : array[0..3] of word);
7: (ui32 : array[0..1] of longword);
8: (fl64 : double);
9: (fl32 : array[0..1] of single);
end;
implementation
uses IniFiles;
{ TPlayerScore }
constructor TPlayerScore.Create;
begin
inherited Create;
fOwner := nil;
fPlayerName := '';
fPlayerScore := 0;
end;
constructor TPlayerScore.CreateAdd(AOwner: TPlayerScores);
begin
Create;
fOwner := AOwner;
if Assigned(AOwner) then
AOwner.Add(Self);
end;
function TPlayerScore.GetIndex: integer;
begin
if assigned(fOwner) then
result := fOwner.IndexOf(Self)
else
result := -1;
end;
procedure TPlayerScore.Change;
begin
if Assigned(fOwner) then
fOwner.Change;
end;
procedure TPlayerScore.Assign(Source: TPersistent);
begin
if source is TPlayerScore then
with TPlayerScore(Source) do
begin
Self.fPlayerName := fPlayerName;
Self.fPlayerScore:= fPlayerScore;
end
else
inherited Assign(source);
end;
procedure TPlayerScore.SetPlayerName(const Value: string);
begin
if value <> fPlayerName then
fPlayerName := Value;
end;
procedure TPlayerScore.SetPlayerScore(const Value: int64);
begin
if value <> fPlayerScore then
fPlayerScore := Value;
end;
{ TPlayerScoreList }
function PlayerScoreItemCompare(item1, item2: pointer): integer;
var P1, P2: int64;
begin
P1 := TPlayerScore(item1).fPlayerScore;
P2 := TPlayerScore(item2).fPlayerScore;
if P1 > P2 then
result := -1
else
if P1 < P2 then
result := 1
else
result := 0;
end;
constructor TPlayerScores.Create(AOwner: TComponent);
begin
inherited;
fList := TList.Create;
end;
destructor TPlayerScores.Destroy;
var N : integer;
begin
for N := 0 to fList.Count-1 do
TPlayerScore(fList.Items[N]).Free;
fList.Clear;
fList.Free;
inherited;
end;
procedure TPlayerScores.Clear;
var N : integer;
begin
for N := 0 to fList.Count-1 do
TPlayerScore(fList.Items[N]).Free;
fList.Clear;
end;
function TPlayerScores.Add(PlayerScore: TPlayerScore): integer;
begin
fList.Add(pointer(PlayerScore));
if fUpdateCount = 0 then
Change;
result := PlayerScore.Index;
end;
function TPlayerScores.Add: TPlayerScore;
begin
result := TPlayerScore.CreateAdd(Self);
if fUpdateCount = 0 then
Change;
end;
function TPlayerScores.Add(const PlayerName: string; const PlayerScore: int64): integer;
var PS : TPlayerScore;
begin
PS := TPlayerScore.CreateAdd(Self);
PS.fPlayerName := PlayerName;
PS.fPlayerScore := PlayerScore;
if fUpdateCount = 0 then
Change;
result := PS.Index;
end;
function TPlayerScores.BeginUpdate: integer;
begin
inc(fUpdateCount);
result := fUpdateCount;
end;
procedure TPlayerScores.Change;
begin
if fUpdateCount <> 0 then
exit;
fList.Sort(@PlayerScoreItemCompare);
if Assigned(fOnChange) then
fOnChange(Self);
end;
function TPlayerScores.Count: integer;
begin
result := fList.Count;
end;
procedure TPlayerScores.Delete(const Index: integer);
begin
TPlayerScore(fList.Items[index]).Free;
fList.Delete(index);
end;
procedure TPlayerScores.Delete(const PlayerName: string);
var N : integer;
begin
for N := fList.Count-1 downto 0 do
if TPlayerScore(fList.Items[N]).fPlayerName = PlayerName then
begin
TPlayerScore(fList.Items[N]).Free;
fList.Delete(N);
end;
end;
function TPlayerScores.EndUpdate: integer;
begin
dec(fUpdateCount);
result := fUpdateCount;
if fUpdateCount = 0 then
Change;
end;
function TPlayerScores.GetItem(Index: Integer): TPlayerScore;
begin
result := TPlayerScore(fList.Items[index]);
end;
function TPlayerScores.IndexOf(Item: TPlayerScore): Integer;
begin
result := fList.IndexOf(pointer(Item));
end;
procedure TPlayerScores.LoadFromFile(const FileName: string);
var N,C : integer;
SEC,PN : string;
PS : int64;
begin
with TIniFile.Create(FileName) do
try
if Assigned(fOnBeforeLoad) then
fOnBeforeLoad(self);
BeginUpdate;
try
C := ReadInteger('scores', 'count', 0);
for N := 0 to C-1 do
begin
SEC := IntToStr(N);
PN := ReadString(SEC, 'playerName', '---');
int64rec(PS).Lo := ReadInteger(SEC, 'playerScoreLo', 0);
int64rec(PS).Hi := ReadInteger(SEC, 'playerScoreHi', 0);
Add(PN, PS);
end;
finally
EndUpdate;
end;
if Assigned(fOnAfterLoad) then
fOnAfterLoad(Self);
finally
Free;
end;
end;
procedure TPlayerScores.SaveToFile(const FileName: string);
var N : integer;
SEC : string;
PS : TPlayerScore;
begin
with TIniFile.Create(FileName) do
try
if assigned(fOnBeforeSave) then
fOnBeforeSave(self);
WriteInteger('scores', 'count', fList.Count);
for N := 0 to fList.Count-1 do
begin
SEC := IntToStr(N);
PS := TPlayerScore(fList.Items[N]);
WriteString(SEC, 'playerName', PS.fPlayerName);
WriteInteger(SEC, 'playerScoreLo', int64rec(PS.fPlayerScore).Lo);
WriteInteger(SEC, 'playerScoreHi', int64rec(PS.fPlayerScore).Hi);
end;
if Assigned(fOnAfterSave) then
fOnAfterSave(Self);
finally
Free;
end;
end;
procedure TPlayerScores.SetItem(Index: Integer; const Value: TPlayerScore);
begin
TPlayerScore(fList.Items[index]).Assign(Value);
end;
procedure TPlayerScores.Sort;
begin
fList.Sort(@PlayerScoreItemCompare);
end;
initialization
Scores := TPlayerScores.Create(nil);
PlayerScores := Scores;
finalization
Scores.Free;
end. |
Partager