; jumps to index a in pointer table hl
JumpToFunctionInTable:
	add a
	add l
	ld l, a
	ld a, $0
	adc h
	ld h, a
	ld a, [hli]
	ld h, [hl]
	ld l, a
	jp hl

; call function at [hl] if non-NULL
CallIndirect:
	push af
	ld a, [hli]
	or [hl]
	jr nz, .call_hl
	pop af
	ret
.call_hl
	ld a, [hld]
	ld l, [hl]
	ld h, a
	pop af
;	fallthrough

CallHL:
	jp hl