First Commit

Upload literally everything from the pokecrystal16 expand-move-ID branch

engine/battle/move_effects/psych_up.asm

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+BattleCommand_PsychUp:
+	ld hl, wEnemyStatLevels
+	ld de, wPlayerStatLevels
+	ldh a, [hBattleTurn]
+	and a
+	jr z, .pointers_correct
+; It's the enemy's turn, so swap the pointers.
+	push hl
+	ld h, d
+	ld l, e
+	pop de
+.pointers_correct
+	push hl
+	ld b, NUM_LEVEL_STATS
+; If any of the enemy's stats is modified from its base level,
+; the move succeeds.  Otherwise, it fails.
+.loop
+	ld a, [hli]
+	cp BASE_STAT_LEVEL
+	jr nz, .break
+	dec b
+	jr nz, .loop
+	pop hl
+	call AnimateFailedMove
+	jp PrintButItFailed
+
+.break
+	pop hl
+	ld b, NUM_LEVEL_STATS
+.loop2
+	ld a, [hli]
+	ld [de], a
+	inc de
+	dec b
+	jr nz, .loop2
+	ldh a, [hBattleTurn]
+	and a
+	jr nz, .calc_enemy_stats
+	call CalcPlayerStats
+	jr .merge
+
+.calc_enemy_stats
+	call CalcEnemyStats
+.merge
+	call AnimateCurrentMove
+	ld hl, CopiedStatsText
+	jp StdBattleTextbox