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package body Moves is
procedure Add
(This : in out Path;
Item : in Move) is
begin
This.Append (Item);
end Add;
procedure Add
(This : in out Path;
List : in Path) is
begin
This.Append (List);
end Add;
procedure Prefix
(This : in out Path;
Item : in Move) is
begin
This.Insert (1, Item);
end Prefix;
function Latest
(This : in Path)
return Move is
begin
return This.Last_Element;
end Latest;
procedure Drop_Latest
(This : in out Path) is
begin
This.Delete_Last;
end Drop_Latest;
function Length
(This : in Path)
return Natural is
begin
return Natural (Move_Vectors.Vector (This).Length);
end Length;
procedure Total_Delta
(This : in Path;
DX, DY : out Integer) is
begin
DX := 0;
DY := 0;
for M of This loop
DX := DX + M.Delta_X;
DY := DY + M.Delta_Y;
end loop;
end Total_Delta;
end Moves;
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