newsSGE Game Engine - News: SGE 0.22 Released

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SGE 0.22 Released

Item posted by Julie Marchant <onpon4> on Fri 18 Dec 2015 10:00:04 PM UTC.

I needed to release a new version of the SGE to fix a particular bug, so here's a new release! Version 0.22 of the SGE is a pretty minor one and its main purpose is to release bugfixes for the Pygame SGE, but it does contain some other changes:

  • Fixed the "hello world" tutorial; it was quite outdated and didn't work anymore.
  • Added a warning to the documentation mentioning that it is not safe to remove an object from a room while looping through the room's objects list (in these circumstances, you should copy the list and iterate through that instead).
  • Clarified that colorkey transparency is based on the top-rightmost pixel of the respective frame, as opposed to the original image. This is important because it means, for example, that you need to be careful with depending on colorkeys when using animation reels (and check every single frame).

And of course, some bugs were fixed in the Pygame SGE, most notably:

  • Animations loaded by sge.Sprite.from_tileset were getting ruined when the origin was anything other than (0, 0); it was offsetting the frames inappropriately. This was my primary motivation for this release, because it was having a catastrophic effect on a small game I made for a "secret Santa" thing.
  • There was a subtle mistake in sge.Room.start caused errors that could sometimes be catastrophic, though usually not fatal. This was the cause of the occasional "falling through the floor" glitch in ReTux. This one is actually very interesting; see commit cfd9e612d44d5bd9b9144ca7e7d4f804f035477b if you want to read more.

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