;Get Direction ; ;By Mikel Blanchard ;Copyright (c) 1998 ;Macross Software ; ;http://MacrossSoftware.home.ml.org/ ; ;Input: BC = (x,y) for character ; DE = (x,y) for enemy character ;Ouput: A = Direction the enemy should walk according to the table ; NW N NE ; 0 1 2 ; W 3 4 5 E ; 6 7 8 ; SW S SE ; ; (4 = same location, ie you're dead.) ; GetDirec: ld a,b cp d ; Check horizontal position ld l,0 jr c,CheckVert ; True if YouX < EnemyX ld l,1 ; Not inc l... jr z,CheckVert ; True if YouX = EnemyX inc l CheckVert: ld a,c cp e ld h,0 jr c,CheckDone ; True if YouY < EnemyY ld h,3 jr z,CheckDone ; True if YouX = EnemyY ld h,6 CheckDone: ld a,l add a,h ret