You walk on the black part of the map that isn't mappable
Numbered Steps to Reproduce Problem:
use pixel movement
Code Snippet (if applicable) to Reproduce Problem:
step_size = 4
bound_x = 15
bound_y = 32
bound_width = 15
bound_height = 32
Actual Results:
you walk on black unmappable tile below mapped areas
Does the problem occur:
Every time? Or how often?everytime
When does the problem NOT occur?
when you don't use pixel movement
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.)
build before pixel movement beta version
Workarounds:
edit step size or dont use pixel movement
When I tested using the exact bounds and step_size you provided, I was able to move my mob such that its actual 32x32 icon went offscreen, but this is not surprising because you set the bounding box to start 32 pixels north of the icon itself (via bound_y=32). I was not able to take the bounding box itself over the edge of the map, which would have been an actual bug.
If you want a mob that's 15 pixels wide and 32 high, but want to stick with the confines of a normal 32x32 icon, then the correct bound_x would be 8 or 9 (depending on how your icon is centered) and bound_y would be 0.