BGE Python sys.path for the blenderplayer and blender

sys.path is the search path for python modules. This is useful so people making games can put all their scripts in a folder and be sure they will always load into the BGE.

for each blend file a scripts directory is added to the path
 /home/me/foo.blend
will look for modules in...
 /home/me/scripts/*.py 

It could also default to look for modules in the same directory as the blend file but I think this is messy.
Added a note in the tooltip about //scripts so its not such a hidden feature.

This works by storing the original sys.path, then adding the paths for the blendfile and all its libs,
when a new blendfile is loaded, the original sys.path is restored before adding the blendfiles paths again so the sys.path wont get junk in it.

One problem with this - when using linked libs the module names must be unique else it will load the wrong module for one of the controllers.

also fixed 2 bugs
- sys.path in the blenderplayer was growing by 1 for every file load in blenderplayer
- the relative path (gp_GamePythonPath), wasnt being set when loading files in the blenderlayer (as I wrongly said in the last commit).

1 files changed, 1 insertions, 1 deletions

diff --git a/source/gameengine/GamePlayer/ghost/GPG_ghost.cpp b/source/gameengine/GamePlayer/ghost/GPG_ghost.cpp
index 64e70ce37c3..7c47d2353a6 100644
--- a/source/gameengine/GamePlayer/ghost/GPG_ghost.cpp
+++ b/source/gameengine/GamePlayer/ghost/GPG_ghost.cpp
@@ -704,10 +704,10 @@ int main(int argc, char** argv)
 						
 						BLI_strncpy(pathname, maggie->name, sizeof(pathname));
 						BLI_strncpy(G.sce, maggie->name, sizeof(G.sce));
+						setGamePythonPath(G.sce);
 
 						if (firstTimeRunning)
 						{
-							setGamePythonPath(G.sce);
 							firstTimeRunning = false;
 
 							if (fullScreen)