* ============================================================================ *
*	RectOverlap: Determine if two IBoxes overlap
*
*	BOOL RectOverlap(struct IBox *a, struct IBox *b);
*                    a0              a1
* ============================================================================ *

			include		'intuition/intuition.i'

			SECTION		rectoverlap.asm,CODE

			xdef		_RectOverlap
_RectOverlap
			move.w		ibox_Left(a0),d0
			add.w		ibox_Width(a0),d0
			cmp.w		ibox_Left(a1),d0
			ble.s		seperate

			move.w		ibox_Left(a1),d0
			add.w		ibox_Width(a1),d0
			cmp.w		ibox_Left(a0),d0
			ble.s		seperate

			move.w		ibox_Top(a0),d0
			add.w		ibox_Height(a0),d0
			cmp.w		ibox_Top(a1),d0
			ble.s		seperate

			move.w		ibox_Top(a1),d0
			add.w		ibox_Height(a1),d0
			cmp.w		ibox_Top(a0),d0
			ble.s		seperate

			moveq		#1,d0
			rts
			
seperate:	moveq		#0,d0
			rts

			end