a hack to add custom music that may or may not work

3 files changed, 67 insertions, 1 deletions

diff --git a/bugfixes.yaml b/bugfixes.yaml
index 5923671..3f91729 100644
--- a/bugfixes.yaml
+++ b/bugfixes.yaml
@@ -1,6 +1,17 @@
 ---

-source_files: [../src/randomcrap.S]

+source_files: [../src/randomcrap.S, ../src/music.S]

 hooks:

+  - name: MusicHax1
+    type: patch
+    addr_pal: 0x8019BA78
+    data: '60000000 60000000' # disables limit
+
+  - name: MusicHax2
+    type: branch_insn
+    src_addr_pal: 0x8008E5E4
+    branch_type: b
+    target_func: 'HaxMusic'
+
   - name: FixCoinJump

     type: patch

     addr_ntsc: 0x809E75F0

diff --git a/kamek_pal.x b/kamek_pal.x
index b21866a..2f05e6e 100644
--- a/kamek_pal.x
+++ b/kamek_pal.x
@@ -45,6 +45,8 @@ SECTIONS {
 	CheckIfPlayingSound = 0x80196740;
 	RelatedToPlayingSoundsAlongsideAnims = 0x80105350;
 
+	SoundRelatedClass = 0x8042A768;
+
 	ExitStage__Fiiii = 0x80102370;
 
 
diff --git a/src/music.S b/src/music.S
new file mode 100644
index 0000000..59c86a0
--- /dev/null
+++ b/src/music.S
@@ -0,0 +1,53 @@
+.text
+
+# An Epic Music Hack
+
+.extern SoundRelatedClass
+.extern sprintf
+.global HaxMusic
+
+HaxMusic:
+	cmpwi r3, 100
+	bltlr
+
+	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"
+
+