Decompose fight.go: hit-handler table, weapon/armor helpers (step 7)

The monster special-power switch in attack becomes
gameData.hitHandlers (indexed by monster letter); attack splits into
monsterHit/monsterMiss; fight gains revealXeroc and heroHits;
rollAttacks gains weaponAttack, wieldedRingBonus, and defenderArmor;
killed gains killedSpecial. fight.go is complexity-clean. Behavior and
RNG call order unchanged.

game/tables.go

@@ -137,6 +137,11 @@ type gameData struct {
 	// cases of the sticks.c do_zap switch. A false return aborts the
 	// zap without using a charge (drain life on a too-weak hero).
 	zapHandlers [NumWandTypes]func(g *RogueGame, obj *Object) bool
+
+	// hitHandlers dispatches a monster's special power when its hit
+	// lands, indexed by monster letter - 'A': the cases of the fight.c
+	// attack switch. A true return means the monster removed itself.
+	hitHandlers [26]func(g *RogueGame, mp *Monster, mname string) bool
 }
 
 // ripWall is the repeated blank wall line of the tombstone art.
@@ -656,6 +661,17 @@ func newGameData() *gameData {
 			WandTeleportTo:   (*RogueGame).zapTeleport,
 			WandCancellation: (*RogueGame).zapCancellation,
 		},
+
+		hitHandlers: [26]func(*RogueGame, *Monster, string) bool{
+			0:         (*RogueGame).hitAquator, // 'A' - 'A'
+			'F' - 'A': (*RogueGame).hitFlytrap,
+			'I' - 'A': (*RogueGame).hitIceMonster,
+			'L' - 'A': (*RogueGame).hitLeprechaun,
+			'N' - 'A': (*RogueGame).hitNymph,
+			'R' - 'A': (*RogueGame).hitRattlesnake,
+			'V' - 'A': (*RogueGame).hitLifeDrainer,
+			'W' - 'A': (*RogueGame).hitLifeDrainer,
+		},
 	}
 }