* Update random number functions to avoid IB
Most calls to set seed were using uint32_t already, there were a few variables which were better served by having their type changed from signed to unsigned. The one exception is ItemStruct::_iSeed. This is an identifier that also happens to be used as a seed occasionally so a comment was added documenting this exception.
Includes suggested style changes for Source/towners.h; Source/towners.cpp; Source/msg.h; Source/multi.h
Because of the heavy usage of this function in objects.cpp and the mixed use of aliases and direct references to the active object in Operate*Door functions I've done some refactoring of those areas beyond what is strictly necessary. Hopefully this makes sense and is reasonable to include in this change.
* Refactor GetRotaryDistance to use Point instead of int x/y params
* Refactor HSExists to use Point instead of int x/y params
* Refactor IsPathBlocked to take typed params (Point, Direction)
The caller was already passing in a Direction value so this matches usage better. I also pulled the Direction to Point helper function up so it is available as a static class member, this allows replacing the use of the Offset array in plrctrls.cpp.
When adding a Direction to a point (and not scaling it first) I avoid explicitly creating a Point object since the operator+ overload will do that conversion implicitly.
* Replace Offsets array with Point::fromDirection
* Refactor GetDistanceRanged to use Point
I've added ExactDistance as a member function of Point to match ApproxDistance instead of only having it defined in GetDistanceRanged, it seemed more appropriate to be part of the class. Also removed temporary variables from callers of GetDistanceRanged as they were mainly used as a convenience for avoiding repetition when passing values into this function.
* Refactor GetDistance to use Point