.text

# An Epic Music Hack

.extern SoundRelatedClass
.extern sprintf
.global HaxMusic

# Without Drums: Type 0
# Athletic, Castle(Siro)

# With Drums: Type 1
# Overworld(Chijou), ...

HaxMusic:
	cmpwi r3, 100
	bltlr

	li r4, 0 # Type: No Yoshi Drums
	cmpwi r3, 200
	blt Begin

	li r4, 1
Begin:

	stwu r1, -0x10(r1)
	mflr r0
	stw r0, 0x14(r1)
	stw r31, 0xC(r1)
	stw r30, 0x8(r1)

	mr r31, r3

	lis r3, SoundRelatedClass@h
	ori r3, r3, SoundRelatedClass@l
	lwz r3, 0(r3)
	lwz r30, 0x5CC(r3)
	addis r30, r30, 3

	subi r3, r30, 0x6A84
	lis r4, RegularMusic@h
	ori r4, r4, RegularMusic@l
	mr r5, r31
	bl sprintf

	subi r3, r30, 0x6A0C
	lis r4, FastMusic@h
	ori r4, r4, FastMusic@l
	mr r5, r31
	bl sprintf

	li r3, 1

	lwz r0, 0x14(r1)
	lwz r31, 0xC(r1)
	lwz r30, 0x8(r1)
	mtlr r0
	addi r1, r1, 0x10
	blr


.data
RegularMusic:	.string "stream/theme%03d.brstm"
FastMusic:		.string "stream/theme%03d_fast.brstm"