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authorTreeki <treeki@gmail.com>2012-07-10 01:06:28 +0200
committerTreeki <treeki@gmail.com>2012-07-10 01:06:28 +0200
commit4716dd060af05eecc5e9761a75af10e288b297a1 (patch)
tree9ba6ad0a25c4e79458c68a69f5c2fc8bc4c0dce7 /src/music.cpp
parentc4d21117dda370659a8e8d15703b3b435276b919 (diff)
downloadkamek-4716dd060af05eecc5e9761a75af10e288b297a1.tar.gz
kamek-4716dd060af05eecc5e9761a75af10e288b297a1.zip
the great extraordinary Custom Music Hack comes to your .. gits
Diffstat (limited to '')
-rw-r--r--src/music.cpp83
1 files changed, 83 insertions, 0 deletions
diff --git a/src/music.cpp b/src/music.cpp
new file mode 100644
index 0000000..a687d35
--- /dev/null
+++ b/src/music.cpp
@@ -0,0 +1,83 @@
+#include <game.h>
+
+struct HijackedStream {
+ //const char *original;
+ //const char *originalFast;
+ u32 stringOffset;
+ u32 stringOffsetFast;
+ u8 originalID;
+};
+
+struct Hijacker {
+ HijackedStream stream[2];
+ u8 currentStream;
+ u8 currentCustomTheme;
+};
+
+
+// Offsets are from the start of the INFO block, not the start of the brsar.
+// INFO begins at 0x212C0, so that has to be subtracted from absolute offsets
+// within the brsar.
+
+#define _I(offs) ((offs)-0x212C0)
+
+Hijacker Hijackers[2] = {
+ {
+ {
+ {/*"athletic_lr.n.32.brstm", "athletic_fast_lr.n.32.brstm",*/ _I(0x4A8F8), _I(0x4A938), 4},
+ {/*"BGM_SIRO.32.brstm", "BGM_SIRO_fast.32.brstm",*/ _I(0x4B2E8), _I(0x4B320), 10}
+ },
+ 0, 0
+ },
+
+ {
+ {
+ {/*"STRM_BGM_CHIJOU.brstm", "STRM_BGM_CHIJOU_FAST.brstm",*/ _I(0x4A83C), _I(0x4A8B4), 1},
+ {/*"STRM_BGM_CHIKA.brstm", "STRM_BGM_CHIKA_FAST.brstm",*/ _I(0x4A878), _I(0x4A780), 2},
+ },
+ 0, 0
+ }
+};
+
+extern void *SoundRelatedClass;
+inline char *BrsarInfoOffset(u32 offset) {
+ return (char*)(*(u32*)(((u32)SoundRelatedClass) + 0x5CC)) + offset;
+}
+
+extern "C" u8 after_course_getMusicForZone(u8 realThemeID) {
+ if (realThemeID < 100)
+ return realThemeID;
+
+ // drums get to use type 1
+ int hjIndex = (realThemeID >= 200) ? 1 : 0;
+
+ Hijacker *hj = &Hijackers[hjIndex];
+
+ // do we already have this theme in this slot?
+ // if so, don't switch streams
+ // if we do, NSMBW will think it's a different song, and restart it ...
+ // but if it's just an area transition where both areas are using the same
+ // song, we don't want that
+ if (hj->currentCustomTheme == realThemeID)
+ return hj->stream[hj->currentStream].originalID;
+
+ // which one do we use this time...?
+ int toUse = (hj->currentStream + 1) & 1;
+
+ hj->currentStream = toUse;
+ hj->currentCustomTheme = realThemeID;
+
+ // write the stream's info
+ HijackedStream *stream = &hj->stream[hj->currentStream];
+
+ sprintf(BrsarInfoOffset(stream->stringOffset), "stream/theme%03d.brstm", realThemeID);
+ sprintf(BrsarInfoOffset(stream->stringOffsetFast), "stream/theme%03d_fast.brstm", realThemeID);
+
+ // done!
+
+ return stream->originalID;
+}
+
+
+
+