hedgewars/uCursor.pas
author nemo
Mon, 10 Apr 2017 12:06:43 -0400
changeset 12213 bb5522e88ab2
parent 10017 de822cd3df3a
child 12659 545e1198e8b9
permissions -rw-r--r--
bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash

unit uCursor;

interface

procedure init;
procedure resetPosition;
procedure updatePosition;
procedure handlePositionUpdate(x, y: LongInt);

implementation

uses SDLh, uVariables;

procedure init;
begin
    resetPosition();
end;

procedure resetPosition;
begin
    SDL_WarpMouse(cScreenWidth div 2, cScreenHeight div 2);
end;

procedure updatePosition;
var x, y: LongInt;
begin
    SDL_GetMouseState(@x, @y);

    if(x <> cScreenWidth div 2) or (y <> cScreenHeight div 2) then
    begin
        handlePositionUpdate(x - cScreenWidth div 2, y - cScreenHeight div 2);

        if cHasFocus then
            SDL_WarpMouse(cScreenWidth div 2, cScreenHeight div 2);
    end
end;

procedure handlePositionUpdate(x, y: LongInt);
begin
    CursorPoint.X:= CursorPoint.X + x;
    CursorPoint.Y:= CursorPoint.Y - y;
end;

end.