lifning
/
SRB2
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Merge branch 'fix-sector-lines' into 'next' 

Fix sector.lines in Lua

See merge request STJr/SRB2!542
This commit is contained in:
James R 2019-12-16 23:05:52 -05:00
parent c0b9671c5b f028bb0219
commit 4f33476fc0
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/lua_maplib.c
View File

@ -445,7 +445,7 @@ static int sectorlines_get(lua_State *L)
// get the "linecount" by shifting our retrieved memory address of "lines" to where "linecount" is in the sector_t, then dereferencing the result
// we need this to determine the array's actual size, and therefore also the maximum value allowed as an index
// this only works if seclines is actually a pointer to a sector's lines member in memory, oh boy
numoflines = (size_t)(*(seclines - (offsetof(sector_t, lines) - offsetof(sector_t, linecount))));
numoflines = (size_t)(*(size_t *)(((size_t)seclines) - (offsetof(sector_t, lines) - offsetof(sector_t, linecount))));
/* OLD HACK
// check first linedef to figure which of its sectors owns this sector->lines pointer
@ -479,7 +479,7 @@ static int sectorlines_num(lua_State *L)
return luaL_error(L, "accessed sector_t.lines doesn't exist anymore.");
// see comments in the _get function above
numoflines = (size_t)(*(seclines - (offsetof(sector_t, lines) - offsetof(sector_t, linecount))));
numoflines = (size_t)(*(size_t *)(((size_t)seclines) - (offsetof(sector_t, lines) - offsetof(sector_t, linecount))));
lua_pushinteger(L, numoflines);
return 1;
}