residualvm/residualvm — pull request #783 by inguin (2013-12-08 19:15:19+00:00)
Title: EMI: Correct sign error when walking on slopes

Due to a sign error in Actor::walkForward() it is frequently difficult or
impossible to walk on sloped sectors (stairs or ramps), e.g. in Meathook's
place or in front of Pegnose's house.