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{
This file is part of the Free Pascal run time library.
Copyright (c) 1993-98 by Michael Van Canneyt
Blackbox Game Example
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
**********************************************************************}
Program blackbox;
{
The object of the game is simple : You have a box of 9x9x9 cells.
you can enter a number of atoms that will be put in the box.
Then you can start shooting in the box with a laser beam.
You enter the coordinates where the beam enters the box.
(this must be on the edges, this means that one of the coordinates
must be 1 or 9...)
The beam will bounce off the atoms (using normal bouncing), and you
will be told where the beam exits.
From this you must guess where the atoms are...
}
Const MaxSize = 9;
MaxAtom = 10;
Type TRow = Array [0..MaxSize+1] of byte;
TPlane = Array [0..MaxSize+1] of TRow;
TCube = Array [0..MaxSize+1] of TPlane;
Var
Cube : TCube;
Count,Guessed,x,y,z : Longint;
ans : string;
Procedure FillCube;
var i,x,y,z : longint;
begin
randomize;
for x:=0 to maxsize+1 do
for y:=0 to maxsize+1 do
for z:=0 to maxsize+1 do
Cube[x,y,z]:=0;
repeat
Write ('Enter number of atoms (1-',maxatom,') : ');
readln (count);
if (count<1) or (count>MaxAtom) then
writeln ('Invalid value entered. Please try again.');
until (count>0) and (count<=MaxAtom);
for I:=1 to count do
begin
repeat
x:=Random(MaxSize)+1;
y:=Random(MaxSize)+1;
z:=Random(MaxSize)+1;
until Cube[x,y,z]=0;
Cube[x,y,z]:=1;
end;
end;
Procedure GetCoords (Var X,y,z : longint);
begin
Write ('X : ');
readln (x);
write ('Y : ');
readln (y);
write ('z : ');
readln (z);
end;
Procedure GetStart (Var x,y,z : longint);
Var OK : boolean;
begin
Writeln ('Please enter beam start coordinates : ');
Repeat
GetCoords (x,y,z);
OK:=((X=1) or (X=MaxSize)) and ((y=1) or (Y=MaxSize)) and
((Z=1) or (z=maxsize));
if Not OK then
writeln ('The beam should enter at an edge. Please try again');
until OK;
end;
Function GetGuess : boolean;
Var OK : boolean;
x,y,z : longint;
begin
Writeln ('Please enter atom coordinates : ');
Repeat
getcoords (x,y,z);
OK:=((X>=1) and (X<=MaxSize)) and ((y>=1) and (Y<=MaxSize)) and
((Z>=1) and (z<=maxsize));
if Not OK then
writeln ('These are not valid coordinates. Please try again');
until OK;
GetGuess:=False;
If Cube[x,y,z]<0 then
Writeln ('You already had this one ! Trying to be clever, eh ?')
else if Cube[x,y,z]>0 then
begin
Writeln ('Correct guess !');
Cube[x,y,z]:=-Cube[x,y,z];
getguess:=true;
end
else
Writeln ('Wrong guess !');
end;
Procedure CalcExit (X,Y,Z : longint);
var tx,ty,tz,dx,dy,dz : longint;
begin
dx:=0;dy:=0;dz:=0;
if x=1 then dx:=1 else if x=MaxSize then dx:=-1;
if y=1 then dy:=1 else if y=MaxSize then dy:=-1;
if z=1 then dz:=1 else if z=MaxSize then dz:=-1;
writeln ('Direction : ',dx,',',dy,',',dz);
repeat
for tx:=-1 to 1 do
for ty:=-1 to 1 do
for tz:=-1 to 1 do
if Cube [X+tx,y+ty,z+tz]<>0 then
begin
dx:=dx-tx;
dy:=dy-ty;
dz:=dz-tz;
end;
if dx<>0 then dx:=dx div abs(dx);
if dz<>0 then dz:=dz div abs(dz);
if dy<>0 then dy:=dy div abs(dy);
x:=x+dx;y:=y+dy;z:=z+dz;
until ((x=0) or (x=MaxSize+1)) or ((y=0) or (y=maxsize+1)) or
((z=0) or (z=maxsize+1));
Writeln ('Beam exited at : (',x-dx,',',y-dy,',',z-dz,')');
end;
{
Procedure DumpCube ;
Var x,y,z : longint;
begin
for x:=1 to MaxSize do
for y:=1 to maxsize do
for z:=1 to maxsize do
if Cube[x,y,z]<>0 then
writeln ('Atom at (',x,',',y,',',z,')');
end;
}
begin
FillCube;
Guessed:=0;
Repeat
repeat
Write ('Shoot, guess or quit (s/g/q) : ');
readln (ans);
ans[1]:=Upcase(ans[1]);
if not (ans[1] in ['S','G','Q']) then
writeln ('Invalid entry. Please try again.');
until ans[1] in ['S','G','Q'];
Case ans[1] of
'S' : begin
getstart (x,y,z);
calcexit (x,y,z);
end;
'G' : If GetGuess then Inc(Guessed);
end;
until (ans[1]='Q') or (guessed=count);
If Guessed=count then
Writeln ('Congratulations! All ',Count,' correct !')
else
Writeln ('Only ',guessed,' out of ',count,' correct...');
end.
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