making an image face the mouse

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octothorpe
 #1
EDIT: use ATan2() instead, it does all of this for you.

To get the angle from one point to another, subtract and use arctan:
	Local dir#
	Local dx# = p\x - MouseX()
	Local dy# = p\y - MouseY()
	If dy < 0 Then dir = ATan(dx/dy)
	If dy > 0 Then dir = ATan(dx/dy) + 180
	If dy = 0 Then ; don't divide by 0!
		If dx < 0 Then dir = 90 Else dir = 270
	EndIf

I snagged this from some of my code in an old discussion about Plobb. There may be a more elegant approach.