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

    // Move curser by 1px in case it's already centered.

    // The game camera in the Alpha for 0.9.23 screwed up if

    // the game started with the mouse already being centered.

    // This fixes it, but we might have overlooked a related

    // bug somewhere else.

    // No big deal since this function is (so far) only called once.

    SDL_WarpMouse((cScreenWidth div 2) + 1, cScreenHeight div 2);

    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.