zp_object_literal.asm

!include "c64.asm"

+c64::basic_start(entry)

!let zp = {
	tmp0: $20,
	tmp1: $22,
	sprite_idx: $24
}

!let zpi = {
	tmp0: $10,
	tmp1: $12,
	sprite_idx: $14
}

!macro set_sprite(zp, idx) {
	lda #idx
	sta zp.sprite_idx
}

entry: {
    lda #0

	; main thread OK
	+set_sprite(zp, 0)
	; for use in IRQs (no overlapping zero-page)
	+set_sprite(zpi, 0)
}