hedgewars/uCursor.pas
author Wuzzy <Wuzzy2@mail.ru>
Thu, 18 Apr 2019 19:44:25 +0200
changeset 14808 9443dc6663ba
parent 14284 a3531b520efb
child 14809 c2793ff4e887
permissions -rw-r--r--
Refactor mouse movement handling
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unit uCursor;
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interface
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procedure init;
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procedure resetPosition;
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procedure resetPositionDelta();
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procedure updatePositionDelta(xrel, yrel: LongInt);
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procedure updatePosition();
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procedure handlePositionUpdate(x, y: LongInt);
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implementation
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uses SDLh, uVariables, uTypes;
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procedure init;
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begin
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    SDL_ShowCursor(SDL_DISABLE);
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    resetPosition();
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    SDL_SetRelativeMouseMode(SDL_TRUE);
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end;
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procedure resetPosition;
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begin
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    if GameType = gmtRecord then
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        exit;
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    SDL_WarpMouse(cScreenWidth div 2, cScreenHeight div 2);
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    resetPositionDelta();
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end;
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procedure resetPositionDelta();
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begin
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    CursorPointDelta.X:= 0;
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    CursorPointDelta.Y:= 0;
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end;
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procedure updatePositionDelta(xrel, yrel: LongInt);
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begin
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    CursorPointDelta.X:= CursorPointDelta.X + xrel;
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    CursorPointDelta.Y:= CursorPointDelta.Y + yrel;
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end;
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procedure updatePosition();
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begin
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    handlePositionUpdate(CursorPointDelta.X, CursorPointDelta.Y);
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    resetPositionDelta();
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end;
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procedure handlePositionUpdate(x, y: LongInt);
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begin
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    CursorPoint.X:= CursorPoint.X + x;
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    CursorPoint.Y:= CursorPoint.Y - y;
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end;
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end.