What changed in EDuke32, build by build

True Room over Room (also known as PROR) (or YAX) ~-_-~-_-~ ~~~~~~~~~~~~~~~~~~~~~~~ ~-_-~-_-~

* more useful auto-red wall feature: if no structure-changing operations have been applied after highlighting and duplicating, now also paste 'visual' fields of outer walls (this is one example of the use of a system that temporarily keeps track of nextwalls for former red lines) * multi-pkies now have individual parallaxyscale

* support for free mixing of multi- and single-tile parallaxed skies in classic * make visibility independent of yxaspect and viewingrange in OpenGL modes -- editor: * when dragging walls, restore pixel width after that (only for the left and right walls of pointhighlight, and its nextwalls, if any) * pasting on walls and auto-aligning them now carries over a few more fields -- fixes: * visibility in OpenGL modes wasn't incremented gradually (regression due to making 'clamp' an inline function instead of a macro) * memory corruption due to calling qlz_compress with less than the recommended surplus storage of 400 bytes * decorative sprites in the mirror showing non-flipped * make the subway SE message (much) more helpful by showing which sector the game considers to be the track sector

* Polymer light access to m32script (light[<lightidx>].<field>). As an application, provide a state 'insertlights' that takes the currently active lights and puts them into the map as SEs (e.g. for maphack recovery). * Prototype of a mechanism to gray out certain portion of a map, making them inactive to various, but not all, editing operations. Highlighting a set of sectors and pressing Ctrl-R will make the Z bounds be [(least ceiling z), (greatest floor z)] of all selected ones, pressing Ctrl-R when no sectors are highlighted will reset them. Not sure if it's for production use at this stage... * The 'align walls' feature [.] now has three independently toggleable behaviours: recurse nextwalls (toggled when Ctrl is pressed), iterate point2s (disabled when Shift is pressed), and also copy pixel width (toggled when Alt is pressed). * Make shades clamp instead of overflowing in the editor Fixes: * crash when carrying out certain operations on walls with xrepeat 0 * the Pause key on linux. Also make demo recording start on Shift-ScrollLock because ScrollLock alone is too easily pressed when pausing

* Tag labeling system for 'link'-type tags, including saving and restoring the tag labels to a separate file '<mapname>.maptags'. Whether a tag is eligible for linking, is determined by a hardcoded (but extensible via m32script) function.

* Sprite cstat 2048 ('use own shade', [N]) now works more or less. (Issues may arise when combined with sector light effects.) * Begin work on 'smart' tag labeling system for Mapster32. Right now, it only displays a '+' after tags with linking semantics. *

* Consolidate the various, slightly different, methods of bounding a sprite between a sector's ceiling and floor into one common function * Fixes for accumulated bugs: shade preview, r_shadescale_unbounded, and a couple of unreported ones * Yaks, gnus, and bisons...

* Refactor two nearly identical chunks in polymost.c into one function in the hope of getting some more, but interestingly that did nothing at all. At least it's more readable this way... * Commit, but don't enable, code for writing PNG screenshots (I'm tired of converting them every time). Requires libpng which in turn requires zlib.