What changed in EDuke32, build by build

Fixes quite a few nasty bugs with the new clipping code, including the crash. Clip shapes are now loaded from _clipshape0.map through _clipshape9.map (no break like when loading tiles, just see if each is present). Mapster32: insert some safety code for sprites with sectnum<0. Because this is still a bad thing, have the m32script corruption checker catch this and run it periodically from EVENT_DRAW2DSCREEN. Also draw such sprites in 2D mode with a blood-red color, and make them draggable. Remove set[sector,wall,sprite] commands.

New sprite clipping for hitscan; crude debugging code for tracing down the crash that Commander is getting and I can reproduce only in real Windows with the synthesis build.

Fix crash. Reason was obsolete code.

New CON command 'clipmovenoslide', doing the same as clipmove but stopping at collisions before sliding calculations. Fixes a problem with Mapster32 where names.h was tried to be read before setting up the search path.

New CON commands:

mapster32 fixes: aiming crash in polymer, more accurate aiming in polymost + calibration/replacement crosshair via "r_preview_mouseaim", 2 other crashes; fix "S" in tile selector, make read-only variable overridable with "script_expertmode", misc. beautifying.

Fixes various issues with selecting: sectors and duplicating them many times in a row, sprites and then deleting some of them (also adds set union ['] and difference [;] to RSHIFT); adds the ability to move all selected sprites in the XY plane in 3d mode with SHIFT-LMB and align to the grid in an absolute fashion with CTRL.

Fixes crash in 2d map drawing where sector[-1] was accessed; added commands a2xy and ah2xyz to m32script, coded 2d preview of swinging and sliding doors; added "samprate" setting to configuration, useful if the default one gives jittering/echoey audio

Search for named tile in tile selector ('S'); various bugfixes (among other things with PR-override vars)

bugfixes; mark tiles in tile selector for later grouping (press SPACE on a tile); a.m32: convert to CRLF and add [xyz]vel query in 3d mode (Alt-KP1), also different keys for Polymer override var tweaking; some CRLF->LF in LF-only files.

Makefile cleanups: fixed building with GCC 3, made tabs into spaces where outside command context; Windows: make startup window stay 3 seconds if there was an error -- this way you won't mistake yourself forgetting to copy game data for a crash *d'oh*

Fixes compilation for now. Now if my executable would start...

A bunch of m32script additions, fixes and general stuff, among them: local vars/arrays, inline quotes and prettier error messages.

Partially fixes bug #3034382 and a few other ones.

SDL/non-Windows: external midi playing with fork/exec and signals; double initprintf internal buffers since they got too long for the --help text; warn on replacing empty tile with a hightile; fix a keypad issue in Mapster32

more polymer-override variable twiddling in m32script, fixes and beautifying.

Mapster32 maintenance pack #1

Fixes some problems with mapster zooming; reset keystatus[] after playtesting.

Various mapster32 fixes: check wall limits in sector drawing; don't count BACKSPACEing there as a new revision (probably fixes undo-related crashes). Also a patch-fix for a crash I couldn't pin down exactly and a corruption checker for m32script.

fixes line numbering in CONs

m32script fixes and additions