Merge pull request #17 from codemann8/MSUMuteFix

Preserve original Sanc/HC music track change if Zelda isn't delivered yet

drhooks.asm

@@ -189,9 +189,9 @@ Main_ShowTextMessage:
 
 ; Conditionally disable UW music changes in Door Rando
 org $028ADB ; <- Bank02.asm:2088-2095 (LDX.b #$14 : LDA $A0 ...)
-JSL.l Underworld_DoorDown_Entry : CPX #$10
-db $B0, $21 ; BCS $028B04
-BRA + : NOP #6 : +
+JSL.l Underworld_DoorDown_Entry : CPX #$FF
+BEQ + : db $80, $1C ; BRA $028B04
+NOP #6 : +
 
 org $02C3F2 ; <- Bank02.asm:10521 Unused call
 Underworld_DoorDown_Call:

music.asm

@@ -289,14 +289,16 @@ Overworld_MosaicDarkWorldChecks:
 ; 
 ; On entry, A=16bit XY=8bit, A & X safe to mod, Y unknown
 Underworld_DoorDown_Entry:
-    LDA.l DRMode : TAX : LDA $A0 : CPX #0 : BNE .done
+    LDX #$FF ; some junk value to be used later to determine if the below lines will change the track
+    LDA.l $7EF3C5 : AND.w #$00FF : CMP.w #2 : !BLT .vanilla
+    LDA.l DRMode : BNE .done
 
 .vanilla ; thing we wrote over
-    CMP.w #$0012 : BNE +
+    LDA $A0 : CMP.w #$0012 : BNE +
         LDX.b #$14 ; value for Sanc music
         BRA .done
-    + CMP.w #$0002 : BNE .done
+    + LDA $A2 : CMP.w #$0012 : BNE .done
         LDX.b #$10 ; value for Hyrule Castle music
 .done
-    RTL
+    LDA $A0 : RTL
 ;--------------------------------------------------------------------------------