DoPlayerMovement and recomment ow surfing checks

constants.asm

@@ -283,6 +283,30 @@ D_UP       EQU %01000000
 D_DOWN     EQU %10000000
 
 
+; movement
+STANDING EQU -1
+DOWN  EQU 0
+UP    EQU 1
+LEFT  EQU 2
+RIGHT EQU 3
+
+STEP_SLOW EQU 0
+STEP_WALK EQU 1
+STEP_BIKE EQU 2
+STEP_LEDGE EQU 3
+STEP_ICE EQU 4
+STEP_TURN EQU 5
+STEP_BACK_LEDGE EQU 6
+STEP_WALK_IN_PLACE EQU 7
+
+; facing
+FACE_CURRENT EQU 0
+FACE_DOWN  EQU 8
+FACE_UP    EQU 4
+FACE_LEFT  EQU 2
+FACE_RIGHT EQU 1
+
+
 ; Provisional wram bank 5 labels:
 
 ; 8 4-color palettes