ref: 8fc3b8e6e36663f00f8ce7c2830db55a538a72b5
dir: /engine/battle/move_effects/spikes.asm/
BattleCommand_Spikes: ld hl, wEnemyScreens ldh a, [hBattleTurn] and a jr z, .got_screens ld hl, wPlayerScreens .got_screens ; Fails if spikes are already down! bit SCREENS_SPIKES, [hl] jr nz, .failed ; Nothing else stops it from working. set SCREENS_SPIKES, [hl] call AnimateCurrentMove ld hl, SpikesText jp StdBattleTextbox .failed jp FailMove