Adds two monsters originally from slash'em. I used the slash'em
tiles this time, also its code as a starting point but made various
revisions. Both the tiles could benefit from some touch-ups.
displacer beast: blue 'f'. Attempting a melee hit (ie, trying to
move to its spot) has a 50:50 chance for it to swap places with you.
Fairly tough monster to begin with, then half your ordinary attacks
effectively miss and if you try to face a mob by retreating to a
corridor or backing into a corner you can end up being drawn back
into the open. I added bargethrough capability, and also it won't
be fooled about hero's location by Displacement. [It only swaps
places during combat when contact is initiated by the hero, not
when attacked by another monster or when attacking.]
genetic engineer: green 'Q'. Its attack causes the target to be
polymorphed unless that target resists. Hero will almost always
have magic resistance by the time this monster is encountered, but
it can make conflict become risky by hitting and polymorphing other
monsters. Slash'em flagged it hell-only but I took that flag off;
I also took away its ability to teleport. Slash'em polymorphs the
hero if a genetic engineer corpse is eaten; that's included and I
introduced that for monsters too.
I added both of these to the list of candidates for monster spell
'summon nasties' and for post-Wizard harassment.
I also gave all the 'f's infravision. Probably only matters if the
hero polymorphs into a feline.
Displacer beast is originally from AD&D which depicts it as a six-
legged cougar with a pair of tentacles; it has Displacement rather
be able to affect an attacker's location. I think genetic engineer
is original to slash'em where it expands Q class but seems mainly to
be the base monster for Dr.Frankenstein (a unique monster with a
one-level side-branch lair in slash'em's incarnation of Gehennom).
I did my best to exempt some of the bigger aligned blocks from the reformatting
using the /* clang-format off */ and /* clang-format on */ tags. Probably some
that shouldn't have been formatted were anyway; if you encounter them, please
fix.
The clang-format tags were left in on the basis that it's much easier to prune
those out later than to put them back in, and it means that, modulo my custom
version of clang-format, I should be able to run clang-format on the source tree
again without changing anything, now that Pat has fixed the VA_DECL issues.
