The mouse control 'params' var can be missing information in at least the case of applying a Turn transform on an atom. Testing seems to indicate that it is related to the visible portion of the object consisting of overlays, and having a transform applied. Does not occur without overlays. Easily reproducible in a test scenario.
Numbered Steps to Reproduce Problem:
1) Have an object with a completely blank iconstate (as in, the iconstate exists, but is just a full 0 alpha image)
2) Apply a rotation via transform
3) Mouse events will no longer contain all params
Code Snippet (if applicable) to Reproduce Problem:
/obj/entertest
icon = 'Basics.dmi'
icon_state = "empty_state" //A completely empty iconstate
/obj/entertest/New()
..()
overlays += image('Basics.dmi',"obj") //An iconstate with content
/obj/entertest/MouseEntered(location,control,params)
world << params
/obj/entertest/plain
name = "plain entertest"
/obj/entertest/turned
name = "turned entertest"
/obj/entertest/turned/New()
..()
var/matrix/M = matrix()
M.Turn(90)
transform = M
Expected Results:
World output when mousing over Plain, then Turned:
icon-x=18;icon-y=9;screen-loc=12:18,12:9 icon-x=18;icon-y=9;screen-loc=14:21,12:9
Actual Results:
World output when mousing over Plain, then Turned:
icon-x=18;icon-y=9;screen-loc=12:18,12:9 screen-loc=14:21,12:9
Does the problem occur:
Every time? Or how often? Every time
In other games? Any game, test case above
In other user accounts? Yes
On other computers? Yes
When does the problem NOT occur? Nowhere that I can find
Did the problem NOT occur in any earlier versions? If so, what was the last version that worked? Occurs in all betas and back to final 511 verison
Workarounds:
None that I can find.
