Simple 2d animation info

simply apply an offset equal to the total number of frames/2 depending on the direction they are turning/facing (use a variable to store the direction)

if direction=left then offset=0 else offset = (NumFrames/2)

*EDIT*

An excerpt from a piece of code I wrote a while ago:

Select Player1\Facing
		Case 1
				DrawImage Player1\Image, Player1\X, Player1\Y, Player1\Frame
		Case 0
				DrawImage Player1\Image, Player1\X, Player1\Y, Player1\Frame+ ((Player1\nFrames/2))		
End Select