chore: fix bugs

engine/battle/ai/items.asm

@@ -175,9 +175,8 @@ AI_TryItem:
 	ld b, h
 	ld c, l
 	ld hl, AI_Items
-; BUG: AI might use its base reward value as an item (see docs/bugs_and_glitches.md)
-	ld de, wEnemyTrainerItem1
 .loop
+	ld de, wEnemyTrainerItem1
 	ld a, [hl]
 	and a
 	inc a
@@ -553,14 +552,9 @@ EnemyUsedMaxPotion:
 	jr FullRestoreContinue
 
 EnemyUsedFullRestore:
-; BUG: AI use of Full Heal does not cure confusion status (see docs/bugs_and_glitches.md)
 	call AI_HealStatus
 	ld a, FULL_RESTORE
 	ld [wCurEnemyItem], a
-	ld hl, wEnemySubStatus3
-	res SUBSTATUS_CONFUSED, [hl]
-	xor a
-	ld [wEnemyConfuseCount], a
 	; fallthrough
 
 FullRestoreContinue:
@@ -728,7 +722,6 @@ EnemyUsedFullHealRed: ; unreferenced
 	jp PrintText_UsedItemOn_AND_AIUpdateHUD
 
 AI_HealStatus:
-; BUG: AI use of Full Heal or Full Restore does not cure Nightmare status (see docs/bugs_and_glitches.md)
 	ld a, [wCurOTMon]
 	ld hl, wOTPartyMon1Status
 	ld bc, PARTYMON_STRUCT_LENGTH
@@ -736,6 +729,13 @@ AI_HealStatus:
 	xor a
 	ld [hl], a
 	ld [wEnemyMonStatus], a
+	; remove the Confusion status condition
+	ld [wEnemyConfuseCount], a
+	ld hl, wEnemySubStatus3
+	res SUBSTATUS_CONFUSED, [hl]
+	; remove the Nightmare substatus condition
+	ld hl, wEnemySubStatus1
+	res SUBSTATUS_NIGHTMARE, [hl]
 	ld hl, wEnemySubStatus5
 	res SUBSTATUS_TOXIC, [hl]
 	ret

engine/battle/ai/redundant.asm

@@ -176,9 +176,8 @@ AI_Redundant:
 	ret
 
 .FutureSight:
-; BUG: AI does not discourage Future Sight when it's already been used (see docs/bugs_and_glitches.md)
-	ld a, [wEnemyScreens]
-	bit SCREENS_UNUSED, a
+	ld a, [wEnemyFutureSightCount]
+	and a
 	ret
 
 .Heal:

engine/battle/ai/scoring.asm

@@ -1665,10 +1665,9 @@ AI_Smart_Thief:
 	ret
 
 AI_Smart_Conversion2:
-; BUG: "Smart" AI discourages Conversion2 after the first turn (see docs/bugs_and_glitches.md)
 	ld a, [wLastPlayerMove]
 	and a
-	jr nz, .discourage
+	jr z, .discourage
 
 	push hl
 	dec a
@@ -1745,8 +1744,7 @@ AI_Smart_MeanLook:
 	jp z, AIDiscourageMove
 
 ; 80% chance to greatly encourage this move if the enemy is badly poisoned.
-; BUG: "Smart" AI encourages Mean Look if its own Pokémon is badly poisoned (see docs/bugs_and_glitches.md)
-	ld a, [wEnemySubStatus5]
+	ld a, [wPlayerSubStatus5]
 	bit SUBSTATUS_TOXIC, a
 	jr nz, .encourage
 
@@ -3086,10 +3084,9 @@ AI_Cautious:
 	pop hl
 	jr nc, .loop
 
-; BUG: "Cautious" AI may fail to discourage residual moves (see docs/bugs_and_glitches.md)
 	call Random
 	cp 90 percent + 1
-	ret nc
+	jr nc, .loop
 
 	inc [hl]
 	jr .loop