Rename some battle commands

`hittarget` was misleading, as it doesn't actually "hit" the target, it
only plays the animation. As such, I've renamed it to `moveanim`.

`checkfaint` has nothing to do with checking if the user or target has
fainted, instead, it applies wCurDamage onto the target's HP, hitting
the substitute if applicable. I've renamed the command to `applydamage`
and all of its subfunctions accordingly.

2 files changed, 67 insertions, 57 deletions

diff --git a/engine/battle/effect_commands.asm b/engine/battle/effect_commands.asm
index b9a7382c0..ea6c22dda 100644
--- a/engine/battle/effect_commands.asm
+++ b/engine/battle/effect_commands.asm
@@ -556,8 +556,8 @@ CheckEnemyTurn: ; 3421f
 	and 1 << SUBSTATUS_FLYING | 1 << SUBSTATUS_UNDERGROUND
 	call z, PlayFXAnimID
 
-	ld c, $1
-	call EnemyHurtItself
+	ld c, TRUE
+	call DoEnemyDamage
 	call BattleCommand_RaiseSub
 	call CantMove
 	jp EndTurn
@@ -676,8 +676,8 @@ HitConfusion: ; 343a5
 	call CallBattleCore
 	ld a, $1
 	ld [hBGMapMode], a
-	ld c, $1
-	call PlayerHurtItself
+	ld c, TRUE
+	call DoPlayerDamage
 	jp BattleCommand_RaiseSub
 
 ; 343db
@@ -2081,16 +2081,16 @@ BattleCommand_LowerSub: ; 34eee
 ; 34f57
 
 
-BattleCommand_HitTarget: ; 34f57
-; hittarget
+BattleCommand_MoveAnim: ; 34f57
+; moveanim
 	call BattleCommand_LowerSub
-	call BattleCommand_HitTargetNoSub
+	call BattleCommand_MoveAnimNoSub
 	jp BattleCommand_RaiseSub
 
 ; 34f60
 
 
-BattleCommand_HitTargetNoSub: ; 34f60
+BattleCommand_MoveAnimNoSub: ; 34f60
 	ld a, [wAttackMissed]
 	and a
 	jp nz, BattleCommand_MoveDelay
@@ -2274,65 +2274,68 @@ BattleCommand_FailureText: ; 35023
 ; 3505e
 
 
-BattleCommand_CheckFaint: ; 3505e
-; checkfaint
+BattleCommand_ApplyDamage: ; 3505e
+; applydamage
 
 	ld a, BATTLE_VARS_SUBSTATUS1_OPP
 	call GetBattleVar
 	bit SUBSTATUS_ENDURE, a
-	jr z, .not_enduring
+	jr z, .focus_band
+
 	call BattleCommand_FalseSwipe
-	ld b, $0
-	jr nc, .okay
-	ld b, $1
-	jr .okay
+	ld b, 0
+	jr nc, .damage
+	ld b, 1
+	jr .damage
 
-.not_enduring
+.focus_band
 	call GetOpponentItem
 	ld a, b
 	cp HELD_FOCUS_BAND
-	ld b, $0
-	jr nz, .okay
+	ld b, 0
+	jr nz, .damage
+
 	call BattleRandom
 	cp c
-	jr nc, .okay
+	jr nc, .damage
 	call BattleCommand_FalseSwipe
-	ld b, $0
-	jr nc, .okay
-	ld b, $2
-.okay
+	ld b, 0
+	jr nc, .damage
+	ld b, 2
+
+.damage
 	push bc
-	call .check_sub
-	ld c, $0
+	call .update_damage_taken
+	ld c, FALSE
 	ld a, [hBattleTurn]
 	and a
 	jr nz, .damage_player
-	call EnemyHurtItself
+	call DoEnemyDamage
 	jr .done_damage
 
 .damage_player
-	call PlayerHurtItself
+	call DoPlayerDamage
 
 .done_damage
 	pop bc
 	ld a, b
 	and a
 	ret z
+
 	dec a
-	jr nz, .not_enduring2
+	jr nz, .focus_band_text
 	ld hl, EnduredText
 	jp StdBattleTextBox
 
-.not_enduring2
+.focus_band_text
 	call GetOpponentItem
 	ld a, [hl]
 	ld [wNamedObjectIndexBuffer], a
 	call GetItemName
-
 	ld hl, HungOnText
 	jp StdBattleTextBox
 
-.check_sub
+.update_damage_taken
 	ld a, BATTLE_VARS_SUBSTATUS4_OPP
 	call GetBattleVar
 	bit SUBSTATUS_SUBSTITUTE, a
@@ -2341,10 +2344,10 @@ BattleCommand_CheckFaint: ; 3505e
 	ld de, wPlayerDamageTaken + 1
 	ld a, [hBattleTurn]
 	and a
-	jr nz, .damage_taken
+	jr nz, .got_damage_taken
 	ld de, wEnemyDamageTaken + 1
 
-.damage_taken
+.got_damage_taken
 	ld a, [wCurDamage + 1]
 	ld b, a
 	ld a, [de]
@@ -2418,11 +2421,11 @@ GetFailureResultText: ; 350e4
 	ld a, $1
 	ld [wKickCounter], a
 	call LoadMoveAnim
-	ld c, $1
+	ld c, TRUE
 	ld a, [hBattleTurn]
 	and a
-	jp nz, EnemyHurtItself
-	jp PlayerHurtItself
+	jp nz, DoEnemyDamage
+	jp DoPlayerDamage
 
 FailText_CheckOpponentProtect: ; 35157
 	ld a, BATTLE_VARS_SUBSTATUS1_OPP
@@ -3620,15 +3623,13 @@ PlayFXAnimID: ; 35d08
 
 	ld c, 3
 	call DelayFrames
-
 	callfar PlayBattleAnim
-
 	ret
 
 ; 35d1c
 
 
-EnemyHurtItself: ; 35d1c
+DoEnemyDamage: ; 35d1c
 	ld hl, wCurDamage
 	ld a, [hli]
 	ld b, a
@@ -3638,13 +3639,14 @@ EnemyHurtItself: ; 35d1c
 
 	ld a, c
 	and a
-	jr nz, .mimic_sub_check
-
+	jr nz, .ignore_substitute
 	ld a, [wEnemySubStatus4]
 	bit SUBSTATUS_SUBSTITUTE, a
-	jp nz, SelfInflictDamageToSubstitute
+	jp nz, DoSubstituteDamage
 
-.mimic_sub_check
+.ignore_substitute
+	; Substract wCurDamage from wEnemyMonHP.
+	;  store original HP in little endian wBuffer3/4
 	ld a, [hld]
 	ld b, a
 	ld a, [wEnemyMonHP + 1]
@@ -3657,19 +3659,18 @@ EnemyHurtItself: ; 35d1c
 	ld [wBuffer4], a
 	sbc b
 	ld [wEnemyMonHP], a
-	jr nc, .mimic_faint
+	jr nc, .no_underflow
 
 	ld a, [wBuffer4]
 	ld [hli], a
 	ld a, [wBuffer3]
 	ld [hl], a
-
 	xor a
 	ld hl, wEnemyMonHP
 	ld [hli], a
 	ld [hl], a
 
-.mimic_faint
+.no_underflow
 	ld hl, wEnemyMonMaxHP
 	ld a, [hli]
 	ld [wBuffer2], a
@@ -3680,6 +3681,7 @@ EnemyHurtItself: ; 35d1c
 	ld [wBuffer6], a
 	ld a, [hl]
 	ld [wBuffer5], a
+
 	hlcoord 2, 2
 	xor a
 	ld [wWhichHPBar], a
@@ -3690,7 +3692,7 @@ EnemyHurtItself: ; 35d1c
 ; 35d7e
 
 
-PlayerHurtItself: ; 35d7e
+DoPlayerDamage: ; 35d7e
 	ld hl, wCurDamage
 	ld a, [hli]
 	ld b, a
@@ -3700,12 +3702,15 @@ PlayerHurtItself: ; 35d7e
 
 	ld a, c
 	and a
-	jr nz, .mimic_sub_check
-
+	jr nz, .ignore_substitute
 	ld a, [wPlayerSubStatus4]
 	bit SUBSTATUS_SUBSTITUTE, a
-	jp nz, SelfInflictDamageToSubstitute
-.mimic_sub_check
+	jp nz, DoSubstituteDamage
+
+.ignore_substitute
+	; Substract wCurDamage from wBattleMonHP.
+	;  store original HP in little endian wBuffer3/4
+	;  store new HP in little endian wBuffer5/6
 	ld a, [hld]
 	ld b, a
 	ld a, [wBattleMonHP + 1]
@@ -3719,14 +3724,13 @@ PlayerHurtItself: ; 35d7e
 	sbc b
 	ld [wBattleMonHP], a
 	ld [wBuffer6], a
-	jr nc, .mimic_faint
+	jr nc, .no_underflow
 
 	ld a, [wBuffer4]
 	ld [hli], a
 	ld a, [wBuffer3]
 	ld [hl], a
 	xor a
-
 	ld hl, wBattleMonHP
 	ld [hli], a
 	ld [hl], a
@@ -3734,14 +3738,15 @@ PlayerHurtItself: ; 35d7e
 	ld [hli], a
 	ld [hl], a
 
-.mimic_faint
+.no_underflow
 	ld hl, wBattleMonMaxHP
 	ld a, [hli]
 	ld [wBuffer2], a
 	ld a, [hl]
 	ld [wBuffer1], a
+
 	hlcoord 10, 9
-	ld a, $1
+	ld a, 1
 	ld [wWhichHPBar], a
 	predef AnimateHPBar
 .did_no_damage
@@ -3750,8 +3755,7 @@ PlayerHurtItself: ; 35d7e
 ; 35de0
 
 
-SelfInflictDamageToSubstitute: ; 35de0
-
+DoSubstituteDamage: ; 35de0
 	ld hl, SubTookDamageText
 	call StdBattleTextBox
 
diff --git a/engine/battle/move_effects/false_swipe.asm b/engine/battle/move_effects/false_swipe.asm
index e93b627ec..f00de91e7 100644
--- a/engine/battle/move_effects/false_swipe.asm
+++ b/engine/battle/move_effects/false_swipe.asm
@@ -1,6 +1,8 @@
 BattleCommand_FalseSwipe: ; 35c94
 ; falseswipe
 
+; Makes sure wCurDamage < MonHP
+
 	ld hl, wEnemyMonHP
 	ld a, [hBattleTurn]
 	and a
@@ -15,12 +17,14 @@ BattleCommand_FalseSwipe: ; 35c94
 	pop de
 	pop hl
 	jr c, .done
+
 	ld a, [hli]
 	ld [de], a
 	inc de
 	ld a, [hl]
 	dec a
 	ld [de], a
+
 	inc a
 	jr nz, .okay
 	dec de
@@ -28,11 +32,13 @@ BattleCommand_FalseSwipe: ; 35c94
 	dec a
 	ld [de], a
 .okay
+
 	ld a, [wCriticalHit]
 	cp 2
 	jr nz, .carry
 	xor a
 	ld [wCriticalHit], a
+
 .carry
 	scf
 	ret