DataMuseum.dk

Presents historical artifacts from the history of:

Rational R1000/400 Tapes

This is an automatic "excavation" of a thematic subset of
artifacts from Datamuseum.dk's BitArchive.

See our Wiki for more about Rational R1000/400 Tapes

Excavated with: AutoArchaeologist - Free & Open Source Software.


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Index: ┃ B T

⟦bd7dd3700⟧ TextFile

    Length: 1717 (0x6b5)
    Types: TextFile
    Names: »B«

Derivation

└─⟦a7d1ea751⟧ Bits:30000550 8mm tape, Rational 1000, !users!projects 94_04_11
    └─ ⟦129cab021⟧ »DATA« 
        └─⟦this⟧ 
└─⟦2f6cfab89⟧ Bits:30000547 8mm tape, Rational 1000, !projects 94-01-04
    └─ ⟦d65440be7⟧ »DATA« 
        └─⟦this⟧ 

TextFile

with Text_Io;

package body Magic is

    package Io is new Text_Io.Integer_Io (Num => Token);
    type Cell is
        record
            Row : Max_Size;
            Column : Max_Size;
        end record;

    Cursor : Cell;


    procedure Go_To_Center (S : in Square) is
    begin
        Cursor.Row := (S.Size / 2) + 1;
        Cursor.Column := (S.Size / 2) + 1;
    end Go_To_Center;

    procedure Move (S : in Square; D : in Direction) is  
    begin
        case D is
            when North =>
                Cursor.Row := Max_Size'Succ (Cursor.Row mod S.Size);
            when East =>
                Cursor.Column := Max_Size'Succ (Cursor.Column mod S.Size);
            when South =>
                if Cursor.Row = Max_Size'First then
                    Cursor.Row := S.Size;
                else
                    Cursor.Row := Max_Size'Pred (Cursor.Row);
                end if;
            when West =>
                if Cursor.Column = Max_Size'First then
                    Cursor.Column := S.Size;
                else
                    Cursor.Column := Max_Size'Pred (Cursor.Column);
                end if;
        end case;
    end Move;

    procedure Deposit (S : in out Square; T : in Token) is
    begin
        S.T (Cursor.Row, Cursor.Column) := T;
    end Deposit;

    function Cell_Busy (S : in Square) return Boolean is
    begin
        return S.T (Cursor.Row, Cursor.Column) > 0;
    end Cell_Busy;

    procedure Display (S : in Square) is
    begin
        for I in reverse 1 .. S.Size loop
            for J in 1 .. S.Size loop  
                Io.Put (S.T (I, J), 6);
            end loop;  
            Text_Io.New_Line;
        end loop;  
    end Display;

end Magic;