Editing Mission Builder (section)

==== SimGroups ====

'''SimGroups''' are just containers that you can put other objects in.  Sometimes they're necessary (as we'll see for spawn points) and sometimes they're just a way of keeping your object list tidy.  You can find them at the very bottom of the list of objects, under '''System'''.  When you create one you'll be asked to give it a name, but it won't appear in the mission, it just exists in the tree view.  They're also a pain to delete, so try not to create more than you need.

Create one now to store some objects you created.  When it appears in the tree view, alt-click on it and the background will change colour.  This is now your active '''SimGroup''', and any new objects (including other simgroups) will be created inside it.  To stop that, just alt-click on ''MissionGroup'', which is your main '''SimGroup''' which stores the whole scene.  A highlighted '''SimGroup''' looks like this:

[[File:MB_Screen12.jpg]]

I've created a '''SimGroup''' called ''PitBarriers'' to hold the barriers around the pit (imaginative, huh?) and highlighted it.  If I create a new object it will be added to that group, or I can add all the barriers by selecting them (ctrl-click for multiple selection) and choosing '''Add Selection to Instant Group''' from the '''World''' menu.  Now if I select the simgroup I can move, rotate or scale all the barriers at once.

OK, that's enough about simgroups for now, on to the interesting part.