Misc clean up and small improvements

engine/battle/animations.asm

@@ -2618,7 +2618,7 @@ PlayApplyingAttackSound:
 ; play a different sound depending if move is not very effective, neutral, or super-effective
 ; don't play any sound at all if move is ineffective
 	call WaitForSoundToFinish
-	ld a, [wDamageMultipliers] ; effectiveness
+	ld a, [wDamageMultipliers]
 	and $7f
 	ret z
 	cp 10

engine/battle/core.asm

@@ -865,7 +865,7 @@ EndLowHealthAlarm:
 ; This function is called when the player has the won the battle. It turns off
 ; the low health alarm and prevents it from reactivating until the next battle.
 	xor a
-	ld [wDanger], a ; turn off low health alarm
+	ld [wLowHealthAlarm], a ; turn off low health alarm
 	ld [wChannelSoundIDs + Ch5], a
 	inc a
 	ld [wLowHealthAlarmDisabled], a ; prevent it from reactivating
@@ -1008,11 +1008,11 @@ RemoveFaintedPlayerMon:
 	predef FlagActionPredef ; clear gain exp flag for fainted mon
 	ld hl, wEnemyBattleStatus1
 	res 2, [hl]   ; reset "attacking multiple times" flag
-	ld a, [wDanger]
+	ld a, [wLowHealthAlarm]
 	bit 7, a      ; skip sound flag (red bar (?))
 	jr z, .skipWaitForSound
 	ld a, $ff
-	ld [wDanger], a ;disable low health alarm
+	ld [wLowHealthAlarm], a ;disable low health alarm
 	call WaitForSoundToFinish
 .skipWaitForSound
 ; a is 0, so this zeroes the enemy's accumulated damage.
@@ -1859,7 +1859,7 @@ DrawPlayerHUDAndHPBar:
 	cp HP_BAR_RED
 	jr z, .setLowHealthAlarm
 .fainted
-	ld hl, wDanger
+	ld hl, wLowHealthAlarm
 	bit 7, [hl] ;low health alarm enabled?
 	ld [hl], $0
 	ret z
@@ -1867,7 +1867,7 @@ DrawPlayerHUDAndHPBar:
 	ld [wChannelSoundIDs + Ch5], a
 	ret
 .setLowHealthAlarm
-	ld hl, wDanger
+	ld hl, wLowHealthAlarm
 	set 7, [hl] ;enable low health alarm
 	ret
 

engine/battle/end_of_battle.asm

@@ -45,7 +45,7 @@ EndOfBattle:
 	predef EvolutionAfterBattle
 .resetVariables
 	xor a
-	ld [wDanger], a ;disable low health alarm
+	ld [wLowHealthAlarm], a ;disable low health alarm
 	ld [wChannelSoundIDs + Ch5], a
 	ld [wIsInBattle], a
 	ld [wBattleType], a