Organize macros/ like pokecrystal

While doing so I replaced the StopAllMusic macro with a SFX_STOP_ALL_MUSIC constant and applied it throughout the code.

constants/audio_constants.asm

@@ -1,3 +1,29 @@
+; pitch
+	const_def
+	const C_ ; 0
+	const C# ; 1
+	const D_ ; 2
+	const D# ; 3
+	const E_ ; 4
+	const F_ ; 5
+	const F# ; 6
+	const G_ ; 7
+	const G# ; 8
+	const A_ ; 9
+	const A# ; A
+	const B_ ; B
+
+; channel
+	const_def
+	const Ch1 ; 0
+	const Ch2 ; 1
+	const Ch3 ; 2
+	const Ch4 ; 3
+	const Ch5 ; 4
+	const Ch6 ; 5
+	const Ch7 ; 6
+	const Ch8 ; 7
+
 ; HW sound channel register base addresses
 HW_CH1_BASE EQU (rNR10 % $100)
 HW_CH2_BASE EQU ((rNR21 % $100) - 1)

constants/map_data_constants.asm

@@ -7,3 +7,8 @@ EAST  EQU 1
 WEST  EQU 2
 SOUTH EQU 4
 NORTH EQU 8
+
+; tileset environments
+INDOOR  EQU 0
+CAVE    EQU 1
+OUTDOOR EQU 2

constants/map_object_constants.asm

@@ -0,0 +1,14 @@
+; different kinds of people events
+ITEM    EQU $80
+TRAINER EQU $40
+
+WALK EQU $FE
+STAY EQU $FF
+
+DOWN  EQU $D0
+UP    EQU $D1
+LEFT  EQU $D2
+RIGHT EQU $D3
+NONE  EQU $FF
+
+BOULDER_MOVEMENT_BYTE_2 EQU $10

constants/music_constants.asm

@@ -238,3 +238,5 @@ MAX_SFX_ID_2 EQUS "SFX_SILPH_SCOPE"
 	music_const SFX_SLOTS_NEW_SPIN,     SFX_Slots_New_Spin
 	music_const SFX_SHOOTING_STAR,      SFX_Shooting_Star
 MAX_SFX_ID_3 EQUS "SFX_SHOOTING_STAR"
+
+SFX_STOP_ALL_MUSIC EQU $ff

constants/sprite_data_constants.asm

@@ -1,9 +1,3 @@
-; different kinds of people events
-ITEM    EQU $80
-TRAINER EQU $40
-
-BOULDER_MOVEMENT_BYTE_2 EQU $10
-
 ; sprite facing directions
 SPRITE_FACING_DOWN  EQU $00
 SPRITE_FACING_UP    EQU $04