Rename the object_struct field labels and constants (#1005)

Fixes #990

home/map.asm

@@ -246,10 +246,10 @@ GetDestinationWarpNumber::
 	ret
 
 .GetDestinationWarpNumber:
-	ld a, [wPlayerStandingMapY]
+	ld a, [wPlayerMapY]
 	sub 4
 	ld e, a
-	ld a, [wPlayerStandingMapX]
+	ld a, [wPlayerMapX]
 	sub 4
 	ld d, a
 	ld a, [wCurMapWarpCount]
@@ -1514,16 +1514,16 @@ GetMovementPermissions::
 	call .LeftRight
 	call .UpDown
 ; get coords of current tile
-	ld a, [wPlayerStandingMapX]
+	ld a, [wPlayerMapX]
 	ld d, a
-	ld a, [wPlayerStandingMapY]
+	ld a, [wPlayerMapY]
 	ld e, a
 	call GetCoordTile
-	ld [wPlayerStandingTile], a
+	ld [wPlayerTile], a
 	call .CheckHiNybble
 	ret nz
 
-	ld a, [wPlayerStandingTile]
+	ld a, [wPlayerTile]
 	and 7
 	ld hl, .MovementPermissionsData
 	add l
@@ -1548,9 +1548,9 @@ GetMovementPermissions::
 	db UP_MASK | LEFT_MASK
 
 .UpDown:
-	ld a, [wPlayerStandingMapX]
+	ld a, [wPlayerMapX]
 	ld d, a
-	ld a, [wPlayerStandingMapY]
+	ld a, [wPlayerMapY]
 	ld e, a
 
 	push de
@@ -1567,9 +1567,9 @@ GetMovementPermissions::
 	ret
 
 .LeftRight:
-	ld a, [wPlayerStandingMapX]
+	ld a, [wPlayerMapX]
 	ld d, a
-	ld a, [wPlayerStandingMapY]
+	ld a, [wPlayerMapY]
 	ld e, a
 
 	push de
@@ -1688,10 +1688,10 @@ GetFacingTileCoord::
 	ld h, [hl]
 	ld l, a
 
-	ld a, [wPlayerStandingMapX]
+	ld a, [wPlayerMapX]
 	add d
 	ld d, a
-	ld a, [wPlayerStandingMapY]
+	ld a, [wPlayerMapY]
 	add e
 	ld e, a
 	ld a, [hl]
@@ -1861,10 +1861,10 @@ CheckCurrentMapCoordEvents::
 	call CheckScenes
 	ld b, a
 ; Load your current coordinates into de.  This will be used to check if your position is in the coord event table for the current map.
-	ld a, [wPlayerStandingMapX]
+	ld a, [wPlayerMapX]
 	sub 4
 	ld d, a
-	ld a, [wPlayerStandingMapY]
+	ld a, [wPlayerMapY]
 	sub 4
 	ld e, a