portal: combating the space-detection issue.
what needs to be tweaked next is how far away objects are spawned.
it should either be a trial&error adjustment or depend on the object's moving direction and the portal's angle in order to avoid issues with box collisions.
if the spawn distance to the portal is just a fixed value (as it was before this patch) or a constant factor (it is now) it can be too big for "nice" portal angles (in tight gaps with still enough space, but -> denied) and too small for bad angles (box collision esp. on big objects like barrels -> denied)
glob:CMakeCache.txt
glob:CMakeFiles
glob:moc_*.cxx
glob:qrc_*.cxx
glob:*.o
glob:Makefile
glob:bin
glob:*.hi
glob:*.*~
glob:*.core
glob:hedgewars/config.inc
glob:cmake_install.cmake
glob:QTfrontend/hwconsts.cpp
glob:CPackConfig.cmake
glob:CPackSourceConfig.cmake
glob:tools/cmake_uninstall.cmake
glob:install_manifest.txt
glob:.DS_Store
glob:*.swp
glob:*.orig
glob:*.diff
glob:vittorio.*
glob:project_files/HedgewarsMobile/Data/
glob:project_files/HedgewarsMobile/build/
glob:gameServer/dist/
glob:misc/libtremor/Xcode/build/
glob:misc/liblua/Xcode/build/
glob:misc/libfreetype/Xcode/build/
glob:misc/libfreetype/Xcode-iPhoneOS/build/
glob:moc_*.cxx_parameters
relre:^release\/
glob:*.log
glob:*.cmd
glob:*.diff
glob:*.patch
glob:*.orig
glob:*.bak
glob:*.rej