So. A while ago, while trying to prevent hogs blowtorching getting turned around, unc0rr altered the old range of blowtorch from 1/8th of 180° up or down, to a 4° gain in upwards and a -4° loss in downwards. He also made it so that starting tunnels could fail to erase sufficient terrain, trapping hogs. Here are a couple of workarounds to more closely approximate old behaviour (do some initial erasure, adjust min/max angles)
/***************************************************************************/
/* */
/* otvalid.h */
/* */
/* OpenType table validation (specification only). */
/* */
/* Copyright 2004, 2008 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
/* modified, and distributed under the terms of the FreeType project */
/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
/* this file you indicate that you have read the license and */
/* understand and accept it fully. */
/* */
/***************************************************************************/
#ifndef __OTVALID_H__
#define __OTVALID_H__
#include <ft2build.h>
#include FT_FREETYPE_H
#include "otverror.h" /* must come before FT_INTERNAL_VALIDATE_H */
#include FT_INTERNAL_VALIDATE_H
#include FT_INTERNAL_STREAM_H
FT_BEGIN_HEADER
FT_LOCAL( void )
otv_BASE_validate( FT_Bytes table,
FT_Validator valid );
/* GSUB and GPOS tables should already be validated; */
/* if missing, set corresponding argument to 0 */
FT_LOCAL( void )
otv_GDEF_validate( FT_Bytes table,
FT_Bytes gsub,
FT_Bytes gpos,
FT_UInt glyph_count,
FT_Validator valid );
FT_LOCAL( void )
otv_GPOS_validate( FT_Bytes table,
FT_UInt glyph_count,
FT_Validator valid );
FT_LOCAL( void )
otv_GSUB_validate( FT_Bytes table,
FT_UInt glyph_count,
FT_Validator valid );
/* GSUB and GPOS tables should already be validated; */
/* if missing, set corresponding argument to 0 */
FT_LOCAL( void )
otv_JSTF_validate( FT_Bytes table,
FT_Bytes gsub,
FT_Bytes gpos,
FT_UInt glyph_count,
FT_Validator valid );
FT_LOCAL( void )
otv_MATH_validate( FT_Bytes table,
FT_UInt glyph_count,
FT_Validator ftvalid );
FT_END_HEADER
#endif /* __OTVALID_H__ */
/* END */