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TextFile

package body Gr_Random is

    Mx1  : constant  := 259200;
    Iax1 : constant  := 7141;
    Icx1 : constant  := 54773;
    Ix1  : S_Natural := (Iax1 * ((Icx1 - 5) rem Mx1) + Icx1) rem Mx1;

    My1  : constant  := 134456;
    Iay1 : constant  := 3121;
    Icy1 : constant  := 28411;
    Iy1  : S_Natural := (Iay1 * ((Icy1 - 15) rem My1) + Icy1) rem My1;

    function Random_X return S_Natural is
    begin
        Ix1 := (Iax1 * Ix1 + Icx1) rem Mx1;
        return Ix1;
    end Random_X;

    function Random_Y return S_Natural is
    begin
        Iy1 := (Iay1 * Iy1 + Icy1) rem My1;
        return Iy1;
    end Random_Y;

--\f

    function Random_X (Width : S_Short) return S_Short is
    begin
        return S_Short (Random_X rem S_Natural (Width));
    end Random_X;


    function Random_Y (Height : S_Short) return S_Short is
    begin
        return S_Short (Random_Y rem S_Natural (Height));
    end Random_Y;


    function Random_W (Max : U_Short) return U_Short is
    begin
        return U_Short (Random_X rem S_Natural (Max));
    end Random_W;


    function Random_H (Max : U_Short) return U_Short is
    begin
        return U_Short (Random_Y rem S_Natural (Max));
    end Random_H;


    function Random_A return S_Short is
    begin
        return S_Short (Random_Y rem (720 * 64)) - (360 * 64);
    end Random_A;

end Gr_Random;