Rename battle files and split move effects Part 4

e.asm, e_2. asm, and 14.asm

engine/battle/unused_stats_functions.asm

@@ -0,0 +1,62 @@
+; does nothing since no stats are ever selected (barring glitches)
+DoubleSelectedStats: ; 39680 (e:5680)
+	ld a, [H_WHOSETURN]
+	and a
+	ld a, [wPlayerStatsToDouble]
+	ld hl, wBattleMonAttack + 1
+	jr z, .notEnemyTurn
+	ld a, [wEnemyStatsToDouble]
+	ld hl, wEnemyMonAttack + 1
+.notEnemyTurn
+	ld c, 4
+	ld b, a
+.loop
+	srl b
+	call c, .doubleStat
+	inc hl
+	inc hl
+	dec c
+	ret z
+	jr .loop
+
+.doubleStat
+	ld a, [hl]
+	add a
+	ld [hld], a
+	ld a, [hl]
+	rl a
+	ld [hli], a
+	ret
+
+; does nothing since no stats are ever selected (barring glitches)
+HalveSelectedStats: ; 396a7 (e:56a7)
+	ld a, [H_WHOSETURN]
+	and a
+	ld a, [wPlayerStatsToHalve]
+	ld hl, wBattleMonAttack
+	jr z, .notEnemyTurn
+	ld a, [wEnemyStatsToHalve]
+	ld hl, wEnemyMonAttack
+.notEnemyTurn
+	ld c, 4
+	ld b, a
+.loop
+	srl b
+	call c, .halveStat
+	inc hl
+	inc hl
+	dec c
+	ret z
+	jr .loop
+
+.halveStat
+	ld a, [hl]
+	srl a
+	ld [hli], a
+	rr [hl]
+	or [hl]
+	jr nz, .nonzeroStat
+	ld [hl], 1
+.nonzeroStat
+	dec hl
+	ret