When editing a /dm_filter before it has been added to a filters list (going from abstract to tangible) you'll end up with a "bad filter" runtime error.
Numbered Steps to Reproduce Problem:
1) Create a filter.
2) Try editing a variable on said filter.
3) Profit.
Code Snippet (if applicable) to Reproduce Problem:
var/dm_filter/filter = filter(type="drop_shadow",size=2,x=0,y=0)
filter.size = 4 // Runtime
// Removing the above you can do
src.filters += filter
filter = src.filters[src.filters.len]
filter.size = 4 // Works.
Expected Results:
Being able to interact with a filter outside its creation like any other datum.
Actual Results:
Runtime errors.
Does the problem occur:
Every time? Or how often? Every time.
In other games? Probably.
In other user accounts? Yes
On other computers? Yes
When does the problem NOT occur?
Turning the filter from an abstract by adding it to a filters list.
Did the problem NOT occur in any earlier versions? If so, what was the last version that worked? (Visit http://www.byond.com/download/build to download old versions for testing.)
Interacting with filters this way wasn't possible until recently, it's likely this has been an issue since it became possible.
Workarounds:
Add to filters first, then keep that reference, you can keep it forever if you want.
