Category : A Collection of Games for DOS and Windows
Archive   : AMAZE.ZIP
Filename : MAZE.PAS

Program Discover_Maze;

Uses
CRT;

Const
maze : array [1..8,1..8] of Integer =
((4,2,2,4,4,3,4,3),
(3,5,3,4,2,3,5,2),
(4,3,2,5,2,2,5,2),
(7,1,4,4,4,2,2,3),
(3,2,2,4,2,5,2,5),
(2,3,2,4,4,2,5,1),
(6,2,2,3,2,5,6,3),
(1,2,5,4,4,2,1,0));
mask : array [1..8,1..8] of Integer =
((0,0,1,0,0,1,0,1),
(0,0,0,0,0,0,0,1),
(0,0,0,1,0,0,0,0),
(0,0,0,0,0,0,0,0),
(1,0,0,0,0,0,0,0),
(0,1,0,0,0,0,0,1),
(0,0,0,1,0,0,0,0),
(0,1,0,0,0,0,1,0));


Var
MMask,OkayToGo,Go,GoNum,AtY,AtX,Dir,X,Y,NumMoves : Integer;

Procedure Exit_Out;
Begin
TextBackGround(0);
TextColor(7);
ClrScr;
Halt;
End;

Procedure DrawMaze;
Begin
TextBackGround(0);
ClrScr;
TextBackground(4);
for X := 5 to 23 do
begin
GoToXY(29,X);
Write(' ');
end;
TextBackGround(1);
for X := 6 to 22 do
begin
GoToXY(30,X);
Write(' ');
end;
for Y := 1 to 8 do
for X := 1 to 8 do
begin
GoToXY(3*Y+28,2*X+5);
if (mask[X,Y] = 1) then TextColor(12) else TextColor(2);
if (maze[X,Y] = 0) then Write('X') else Write(maze[X,Y]);
end;
End;

Procedure AtPos(AAtY,AAtX : Integer);
Var AcX,AcY : Integer;
Begin
TextBackGround(3);
AcY := 3*AAtX+28;
AcX := 2*AAtY+5;
GoToXY(AcY-1,AcX-1);
Write(' ');

GoToXY(AcY-1,AcX+1);
Write(' ');
GoToXY(AcY-1,AcX);
Write(' ');
GoToXY(AcY+1,AcX);
Write(' ');
GoToXY(1,1);
End;

Procedure NoAtPos(AAtY,AAtX : Integer);
Var AcX,AcY : Integer;
Begin
TextBackGround(1);
AcY := 3*AAtX+28;
AcX := 2*AAtY+5;
GoToXY(AcY-1,AcX-1);
Write(' ');
GoToXY(AcY-1,AcX+1);
Write(' ');
GoToXY(AcY-1,AcX);
Write(' ');
GoToXY(AcY+1,AcX);
Write(' ');
GoToXY(1,1);
End;

Function GetDir : Integer;
Var
XX,YY : Char;
GDir : Integer;
Begin
GDir := 0;
repeat
repeat
XX := ReadKey;
YY := #0;
If XX = #27 then Exit_Out;
if ((XX>char(48)) and (XX begin
YY := XX;
XX := #0;
end;
until ((XX = #0));
if (YY=#0) then YY := ReadKey;
case YY of
char(71): {Home}
GDir := 5;
char(55):
GDir := 5;
char(72): {Up}
GDir := 1;
char(56):
GDir := 1;
char(73): {PgUp}
GDir := 6;
char(57):
GDir := 6;
char(75): {Left}
GDir := 4;
char(52):
GDir := 4;
char(77): {Right}
GDir := 2;
char(54):
GDir := 2;
char(79): {End}
GDir := 8;
char(49):
GDir := 8;
char(80): {Down}
GDir := 3;
char(50):
GDir := 3;
char(81): {PgDn}
GDir := 7;
char(51):
GDir := 7;
end;
until (GDir>0);
GetDir := GDir;
end;
Function OkayDir : Integer;
Begin
OkayToGo:=0;
if ((Dir=0) and ((Go>0) and (Go<5))) then OkayToGo:=1;
if ((Dir=1) and ((Go>4) and (Go<9))) then OkayToGo:=1;
OkayDir := OkayToGo;
End;

Begin
TextMode(3);
AtY := 1;
AtX := 1;
Dir := 0;
NumMoves := 0;
DrawMaze;
AtPos(AtY,AtX);
While (not ((AtY = 8) and (AtX = 8))) do
begin
Go := GetDir;
If (OkayDir=1) then
begin
GoNum := Maze[AtY,AtX];
y := 0;
Case Go of
1:
If (AtY-GoNum)>0 then y:=1;
2:
If (AtX+GoNum)<9 then y:=1;
3:
If (AtY+GoNum)<9 then y:=1;
4:
If (AtX-Gonum)>0 then y:=1;
5:
If ((AtX-Gonum)>0) and ((AtY-GoNum)>0) then y:=1;
6:
If ((AtX+GoNum)<9) and ((AtY-GoNum)>0) then y:=1;
7:
If ((AtX+GoNum)<9) and ((AtY+GoNum)<9) then y:=1;
8:
If ((AtX-GoNum)>0) and ((AtY+GoNum)<9) then y:=1;
end;

if y=1 then
begin
NoAtPos(AtY,AtX);
Case Go of
1:
AtY := AtY-GoNum;
2:
AtX := AtX+GoNum;
3:
AtY := AtY+GoNum;
4:
AtX := AtX-GoNum;
5:
begin
AtX := AtX-GoNum;
AtY := AtY-GoNum;
end;
6:
begin
AtX := AtX+GoNum;
AtY := AtY-GoNum;
end;
7:
begin
AtX := AtX+GoNum;
AtY := AtY+GoNum;
end;
8:
begin
AtX := AtX-GoNum;
AtY := AtY+GoNum;
end;
end;
AtPos(AtY,AtX);
NumMoves := NumMoves +1;
MMask := Mask[AtY,AtX];
If (MMask = 1) then Dir:=1-Dir;
end;
end;
end;
TextBackGround(0);
TextColor(7);
GoToXY(1,23);
WriteLn('You Won in ',NumMoves,' Moves!!!');
End.