From: Lukas Krickl <lukas@krickl.dev>
Date: Thu, 2 Oct 2025 03:27:21 +0000 (+0200)
Subject: rectangle: point test now returns the byte after the rectangle
X-Git-Url: https://git.krickl.dev/?a=commitdiff_plain;h=2887f8ce43b7e94b95881c8446a770e3c3e9d192;p=gbrg%2F.git

rectangle: point test now returns the byte after the rectangle

This may help needing to increment the pointers in the test loop.
---

diff --git a/src/rectangle.s b/src/rectangle.s
index 6bedb4e..058474a 100644
--- a/src/rectangle.s
+++ b/src/rectangle.s
@@ -158,6 +158,7 @@ rect_br:
 	;	returns:
 	;		a == 1: inside
 	;		a == 0: not inside
+	;		hl: byte after original rectangle
 rect_point_test:
 	inc hl ; skip mask
 
@@ -199,7 +200,7 @@ rect_point_test:
 	; top right
 
 	; get top right x
-	ld a, [hl]
+	ld a, [hl+]
 	add a, e ; e = x + width
 	capoverflow
 	ld e, a