From: Lukas Krickl <lukas@krickl.dev>
Date: Tue, 7 Oct 2025 04:00:29 +0000 (+0200)
Subject: video: rectangles now despawn if the top corner is off-screen
X-Git-Url: https://git.krickl.dev/?a=commitdiff_plain;h=a6ca64c2840e5c8ec07a238cc9909761249ce87c;p=gbrg%2F.git

video: rectangles now despawn if the top corner is off-screen
---

diff --git a/src/video.s b/src/video.s
index 3975e71..33f3bc4 100644
--- a/src/video.s
+++ b/src/video.s
@@ -142,7 +142,8 @@ scroll_up_adjust:
 
 		ld a, [hl]
 		add a, SCROLL_ADJUST_STEP
-		ld [hl], a
+		ld [hl+], a
+		; hl = r_pos_x
 	
 		; check if off-screen
 		cp a, -16 & 0xFF ; do not despawn if -16
@@ -150,6 +151,11 @@ scroll_up_adjust:
 
 		pop de
 		push de
+		; go to r_h
+		inc hl ; hl = r_h
+		sub a, [hl]
+		capunderflow
+		; despawn if *top* corner is far off-screen
 		cp a, 0xA0 
 		call nc, rect_despawn