mysticbbs/scripts/blackjack.mps

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// ==========================================================================
// BLACKJACK.MPS
//
// This is a simple BlackJack game that I wrote to test out MPL features
// about a year or two ago. I decided to port it to the later MPL version
// for the same purposes.
//
// Changelog:
// - Added an improved AI for the dealer. He's a lot less predictable and
// makes more logical decisions now.
// - When the player busts, the dealers hidden card is now shown. This is
// just for people curious if they would have won by standing.
// - Fixed a few display bugs
// - Now saves your money between sessions
// - Added Top 10 list
// - Added command line option RESET to reset scores
// - Added command line option TOP10 to show top 10 and exit
// - No longer allows negative numbers to be a Wager.
// ==========================================================================
Uses
User;
Const
Version = '1.4';
CashStart = 1000;
CardJack = 11;
CardQueen = 12;
CardKing = 13;
CardAce = 14;
SuitClub = 1;
SuitSpade = 2;
SuitHeart = 3;
SuitDiamond = 4;
Type
PlayerRec = Record
UserID : LongInt;
Name : String[30];
Cash : LongInt;
LastOn : LongInt;
End;
Type
TopTenRec = Record
User : String[35];
Cash : LongInt;
Date : LongInt;
End;
Type
CardRec = Record
Suit : Byte;
Card : Byte;
End;
Var
DataPath : String;
Deck : Array[1..52] of CardRec;
Player : PlayerRec;
PlayerNumber : LongInt = -1;
Wager : LongInt;
Player_Score : Byte;
Player_Cards : Byte;
Dealer_Score : Byte;
Dealer_Hidden : Byte;
Dealer_Cards : Byte;
Dealer_Aces : Byte;
Procedure LoadPlayer;
Var
F : File;
T : PlayerRec;
Begin
GetThisUser;
PlayerNumber := -1;
Player.UserID := UserIndex;
Player.Cash := CashStart;
fAssign (F, DataPath + 'blackjack.ply', 66);
fReset (F);
If IoResult <> 0 Then fReWrite(F);
While Not fEof(F) Do Begin
fReadRec (F, T);
If T.UserID = UserIndex Then Begin
Player := T;
PlayerNumber := fPos(F) / SizeOf(Player);
Break;
End;
End;
fClose (F);
Player.LastOn := DateTime;
Player.Name := UserAlias;
End;
Procedure SavePlayer;
Var
F : File;
Begin
fAssign (F, DataPath + 'blackjack.ply', 66);
fReset (F);
If PlayerNumber <> -1 Then
fSeek (F, SizeOf(Player) * (PlayerNumber - 1));
Else
fSeek (F, fSize(F));
fWriteRec (F, Player);
fClose (F);
End;
Procedure ExecuteTopTen;
Var
TopList : Array[1..10] of TopTenRec;
Count1 : Byte;
Count2 : Byte;
Count3 : Byte;
F : File;
OnePerson : PlayerRec;
Begin
Write ('|16|CL|10Sorting top scores...');
For Count1 := 1 to 10 Do Begin
TopList[Count1].User := 'None';
TopList[Count1].Cash := 0;
TopList[Count1].Date := 0;
End;
fAssign (F, DataPath + 'blackjack.ply', 66);
fReset (F);
If IoResult = 0 Then
While Not fEof(F) Do Begin
fReadRec (F, OnePerson);
For Count2 := 1 to 10 Do
If TopList[Count2].Cash <= OnePerson.Cash Then Begin
For Count3 := 10 DownTo Count2 + 1 Do
TopList[Count3] := TopList[Count3 - 1]
TopList[Count2].Cash := OnePerson.Cash;
TopList[Count2].User := OnePerson.Name;
TopList[Count2].Date := OnePerson.LastOn;
Break;
End;
End;
ClrScr;
GotoXY (21, 3);
Write ('|07Mystic BlackJack - Top 10 Money Holders');
GotoXY (5, 6);
Write ('## User Date Cash');
GotoXY (5, 7);
Write ('|02' + strRep(#196, 68) + '|10');
For Count1 := 1 to 10 Do Begin
GotoXY (5, 7 + Count1);
Write (PadLT(Int2Str(Count1), 2, ' '));
GotoXY (9, 7 + Count1);
Write (TopList[Count1].User);
GotoXY (42, 7 + Count1);
Write (DateStr(TopList[Count1].Date, 1));
GotoXY (53, 7 + Count1);
Write (PadLT(strComma(TopList[Count1].Cash), 20, ' '));
End;
GotoXY (5, 18);
Write ('|02' + strRep(#196, 68));
GotoXY (26, 20);
Write ('|02Press |08[|15ENTER|08] |02to continue|PN');
End;
Procedure DeckCreate;
Var
Suits,
Numbers,
Index : Byte;
Begin
Index := 1;
For Suits := 1 to 4 Do
For Numbers := 2 to CardAce Do Begin
Deck[Index].Suit := Suits;
Deck[Index].Card := Numbers;
Index := Index + 1;
End;
End;
Procedure DeckShuffle;
Var
OneCard : CardRec;
Shuffle,
CardNum1,
CardNum2 : Byte;
Begin
For Shuffle := 1 to 200 Do Begin
CardNum1 := Random(51) + 1;
CardNum2 := Random(51) + 1;
OneCard := Deck[CardNum1];
Deck[CardNum1] := Deck[CardNum2];
Deck[CardNum2] := OneCard;
End;
End;
Function GetCardNumber (Num: Byte) : String;
Var
Res,
Color : String[3];
Begin
Case Deck[Num].Card of
1..10 : Res := PadLT(Int2Str(Deck[Num].Card), 2, ' ');
CardJack : Res := ' J';
CardQueen : Res := ' Q';
CardKing : Res := ' K';
CardAce : Res := ' A';
End;
Case Deck[Num].Suit of
SuitClub : GetCardNumber := '|08' + Res + #05;
SuitSpade : GetCardNumber := '|08' + Res + #06;
SuitHeart : GetCardNumber := '|04' + Res + #03;
SuitDiamond : GetCardNumber := '|04' + Res + #04;
End
End
Procedure DrawCard (X, Y, Showing, Num: Byte);
Var
Str : String;
Begin
If Y = 1 Then Y := 17 Else Y := 10;
X := (X - 1) * 9 + 5;
Str := GetCardNumber(Num);
Case Showing of
1 : Begin
GotoXY (X, Y);
Write ('|23' + Str + ' ');
GotoXY (X, Y + 1);
Write (' ');
GotoXY (X, Y + 2);
Write (' ' + Str + '|16');
End;
2 : Begin
GotoXY (X, Y);
Write ('|07|20<32> <20><> <20>');
GotoXY (X, Y + 1);
Write ('<27> <20><> <20>');
GotoXY (X, Y + 2);
Write ('<27> <20><> <20>|16');
End;
Else
GotoXY (X, Y);
Write ('|00|16 ');
GotoXY (X, Y + 1);
Write (' ');
GotoXY (X, Y + 2);
Write (' |07');
End;
End;
Procedure Print (Str1, Str2: String);
Begin
GotoXY (54, 13);
Write (strRep(' ', 23));
GotoXY (54, 13);
Write (Str1);
GotoXY (54, 14);
Write (strRep(' ', 23));
GotoXY (54, 14);
Write (Str2);
End
Procedure GetNewCard (Dealer: Boolean);
Var
Count,
Value,
Aces : Byte;
Begin
Aces := 0;
Dealer_Aces := 0;
If Dealer Then Begin
Dealer_Score := 0;
Dealer_Cards := Dealer_Cards + 1;
DrawCard (Dealer_Cards, 2, 1, Dealer_Cards + 5);
For Count := 1 to Dealer_Cards Do Begin
Value := Deck[Count + 5].Card;
If Value = CardAce Then Begin
Value := 11;
Dealer_Aces := Dealer_Aces + 1;
End Else
If Value > 10 Then
Value := 10;
Dealer_Score := Dealer_Score + Value;
End;
If Dealer_Score > 21 And Dealer_Aces > 0 Then Begin
Repeat
Dealer_Score := Dealer_Score - 10;
Dealer_Aces := Dealer_Aces - 1;
Until Dealer_Score < 22 or Dealer_Aces = 0;
If Deck[6].Card = CardAce And Dealer_Aces = 0 Then
Dealer_Hidden := 1;
End;
End Else Begin
Player_Score := 0;
Player_Cards := Player_Cards + 1;
DrawCard (Player_Cards, 1, 1, Player_Cards);
For Count := 1 to Player_Cards Do Begin
Value := Deck[Count].Card;
If Value = CardAce Then Begin
Value := 11;
Aces := Aces + 1;
End Else
If Value > 10 Then
Value := 10;
Player_Score := Player_Score + Value;
End;
If Player_Score > 21 Then
While Player_Score > 21 And Aces > 0 Do Begin
Player_Score := Player_Score - 10;
Aces := Aces - 1;
End;
End;
End;
Procedure DrawCash
Begin
GotoXY (64, 19);
Write ('|15|17' + PadRT(strComma(Player.Cash), 10, ' ') + '|16');
End;
Procedure UpdateScores;
Begin
GotoXY (65, 10);
Write ('|15' + Int2Str(Dealer_Score - Dealer_Hidden));
GotoXY (65, 17);
Write (Int2Str(Player_Score));
End
Procedure Initialize;
Procedure EraseInput;
Begin
GotoXY (64, 20);
Write ('|17 |16');
GotoXY (64, 20);
End;
Var
X,
Y : Byte;
Begin
If Player.Cash = 0 Then Begin
Print ('|15No cash|07? |10House loans ya', '|07$|15' + strComma(CashStart) + '|07. |12Press a key');
Player.Cash := CashStart;
ReadKey;
End;
Print (' |12|16Shuffling deck...', '');
DeckShuffle;
For Y := 1 to 2 Do
For X := 1 to 5 Do
DrawCard(X, Y, 3, 1);
GotoXY (65, 10);
Write (' ');
GotoXY (65, 17);
Write (' ');
DrawCash;
Print (' |15|16Enter your wager:', ' |02(|14$|15' + Int2Str(Player.Cash) + ' |14max|02)|14|17');
EraseInput;
Write('|17');
Wager := Abs(Str2Int(Input(10, 10, 1, '')));
If Wager > Player.Cash Then Wager := 0;
If Wager = 0 Then Begin
EraseInput;
Exit;
End;
Dealer_Cards := 1;
Player_Cards := 0;
Dealer_Hidden := Deck[6].Card;
If Dealer_Hidden = CardAce Then
Dealer_Hidden := 11
Else
If Dealer_Hidden > 10 Then
Dealer_Hidden := 10
DrawCard(1, 2, 2, 6)
GetNewCard(False);
GetNewCard(False);
GetNewCard(True);
UpdateScores;
End;
Procedure AdjustScore (Mode: Byte);
Begin
Case Mode of
0 : Begin
Player.Cash := Player.Cash - Wager;
If Player.Cash < 0 Then Player.Cash := 0;
End;
1 : Begin
Player.Cash := Player.Cash + Wager;
If Player.Cash > 99999999 Then Player.Cash := 99999999;
End;
End;
DrawCash;
End;
Var
Ch : Char;
GoForIt : Boolean;
Begin
ClrScr;
If Graphics = 0 Then Begin
WriteLn ('Sorry, this game requires ANSI graphics.|CR|PA');
Halt;
End;
DataPath := JustPath(ProgName);
If Upper(ParamStr(1)) = 'TOP10' Then Begin
ExecuteTopTen;
Halt;
End;
If Upper(ParamStr(1)) = 'RESET' Then Begin
If InputYN('|CR|12Reset blackjack scores? ') Then Begin
FileErase(DataPath + 'blackjack.ply');
WriteLn ('|CRScores have been reset|CR|CR|PA');
End;
Halt;
End;
Randomize;
DeckCreate;
LoadPlayer;
DispFile (DataPath + 'blackjack')
WriteXY (12, 23, 8, 'Mystic BlackJack v' + Version + ' Code: g00r00 Art: Grymmjack');
DrawCash;
Repeat
Print (' |15Want to play a game?', ' |10(|14Y|02/|14N|10)|08: |07')
If OneKey('YN', False) = 'N' Then Break;
Initialize;
If Wager = 0 Then Continue;
If Dealer_Score = 21 Then
If Deck[6].Card = CardJack or Deck[7].Card = CardJack Then
If Deck[6].Suit = SuitClub or Deck[7].Suit = SuitClub or Deck[6].Suit = SuitSpade or Deck[7].Suit = SuitSpade Then Begin
DrawCard (1, 2, 1, 6);
Dealer_Hidden := 0;
AdjustScore(0);
UpdateScores;
Print (' |12Dealer has Black Jack', ' Press any key.');
ReadKey
Continue;
End
If Player_Score = 21 Then
If Deck[1].Card = CardJack or Deck[2].Card = CardJack Then
If Deck[1].Suit = SuitClub or Deck[2].Suit = SuitClub or Deck[1].Suit = SuitSpade or Deck[2].Suit = SuitSpade Then Begin
Print (' |12Player has Black Jack', ' Press any key.');
AdjustScore(1);
ReadKey;
Continue;
End;
Repeat
If Player_Cards < 5 Then Begin
Print ('|10[|14H|10]|07it, |10[|14S|10]|07tand, |10[|14Q|10]|07uit', '|08: |07');
Ch := OneKey('HSQ', False);
End Else
Ch := 'S'
Case Ch of
'Q' : Begin
AdjustScore(0);
Break;
End;
'H' : Begin
GetNewCard(False);
UpdateScores;
If Player_Score > 21 Then Begin
AdjustScore(0);
DrawCard(1,2,1,6); // show dealer hidden card
Print (' |12Player busted', ' Press a key.');
ReadKey;
Break;
End;
// Dealer AI Rules for Hit
// <16 = 100%
// 16 = 50% (100 with ace as 1)
// 17 = 25% ( 50 with ace as 1)
// 18 = 10% ( 25 with ace as 1)
// >18 = 0%
Case Dealer_Score of
1..
15 : GoForIt := True;
16 : If Dealer_Aces = 0 Then
GoForIt := Random(1) = 0
Else
GoForIt := True;
17 : If Dealer_Aces = 0 Then
GoForIt := Random(3) = 0
Else
GoForIt := Random(1) = 0;
18 : If Dealer_Aces = 0 Then
GoForIt := Random(9) = 0
Else
GoForIt := Random(3) = 0;
Else
GoForIt := False; // Dealer decides to stand
End;
If GoForIt Then Begin
GetNewCard(True);
UpdateScores;
If Dealer_Score > 21 Then Begin
DrawCard (1, 2, 1, 6);
Dealer_Hidden := 0;
AdjustScore(1);
UpdateScores;
Print(' |12Dealer busted', ' Press a key.');
ReadKey;
Break;
End;
End;
End;
'S' : Begin
DrawCard (1, 2, 1, 6);
Dealer_Hidden := 0;
UpdateScores;
While Dealer_Score < Player_Score and Dealer_Score < 22 and Dealer_Cards < 5 Do Begin
GetNewCard(True);
UpdateScores;
End
If Dealer_Score > 21 Then Begin
AdjustScore(1);
Print(' |12Dealer busted', ' Press a key.');
ReadKey;
End Else
If Player_Score > 21 Then Begin
AdjustScore(0);
Print(' |12Player busted', ' Press a key.');
ReadKey;
End Else
If Player_Score > Dealer_Score Then Begin
AdjustScore(1);
Print(' |12Player wins!', ' Press a key.');
ReadKey;
End Else
If Dealer_Score > Player_Score Then Begin
AdjustScore(0);
Print(' |12Dealer wins!', ' Press a key.');
ReadKey;
End Else Begin
AdjustScore(2);
Print(' |12Push. No winner.', ' Press a key.');
ReadKey;
End;
Break;
End;
End;
Until False;
Until False;
SavePlayer;
ExecuteTopTen;
End.