ref: 71090c13497946b739cd13f80d31ee13b464e9e6
dir: /engine/overworld/is_player_just_outside_map.asm/
; returns whether the player is one tile outside the map in Z IsPlayerJustOutsideMap: ld a, [wYCoord] ld b, a ld a, [wCurMapHeight] call .compareCoordWithMapDimension ret z ld a, [wXCoord] ld b, a ld a, [wCurMapWidth] .compareCoordWithMapDimension add a cp b ret z inc b ret