hedgewars/uCursor.pas
author Wuzzy <Wuzzy2@mail.ru>
Thu, 03 Jan 2019 19:46:48 +0100
changeset 14535 5ac181cb2396
parent 14305 a3531b520efb
child 14829 9443dc6663ba
permissions -rw-r--r--
Fix bee targeting fail across wrap world edge Previously, the bee always aimed for the light area, no matter where you actually put the target. It also got confused whenever it flew across the wrap world edge. How the bee works now: 1) The placed bee target is *not* recalculated when it was placed in the "gray" part of the wrap world edge. This allows for more fine-tuning. 1a) Place target in light area: bee aims for target light area 1b) Place target in gray area: bee aims for target, but flies to gray area first 2) Bee target is recalculated whenever bee passes the wrap world edge.

unit uCursor;

interface

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

implementation

uses SDLh, uVariables, uTypes;

procedure init;
begin
    resetPosition();
end;

procedure resetPosition;
begin
    if GameType = gmtRecord then
        exit;
    // 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
	x:= cScreenWidth div 2;
	y:= cScreenHeight div 2;
    if GameType <> gmtRecord then
        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 and (GameType <> gmtRecord) 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.