MONS: weight:20 orc / orc warrior / weight:2 orc knight

MONS: weight:20 orc / orc warrior / weight:1 orc knight

: if you.absdepth() >= 10 then

: else
MONS:    orc w:32 / w:7 orc warrior
: end

MONS: weight:100 orc knight / orc warrior

: if you.absdepth() >= 10 and crawl.one_chance_in(10) then
MONS: orc knight
SUBST: G = .
: else
MONS: orc warrior
SUBST: G = 4
: end

.122........3.I.3......4Ocww.

.122........3.I.3.....G4Ocww.

DEPTH: 11

MONS: hungry ghost/phantom/wraith, orc sorcerer/orc priest/nothing

MONS: hungry ghost/phantom/w:1 wraith, w:1 orc sorcerer/orc priest/nothing

LUARET1(crawl_one_chance_in, boolean, one_chance_in( luaL_checkint(ls, 1) ))
LUARET1(crawl_random2avg, number,
        random2avg( luaL_checkint(ls, 1), luaL_checkint(ls, 2) ))
LUARET1(crawl_coinflip, boolean, coinflip())

    { "one_chance_in",  crawl_one_chance_in },
    { "random2avg"   ,  crawl_random2avg },
    { "coinflip",       crawl_coinflip },