From 2cf85b0add7e87bbea9caccd8b8c10b9bfa7a4a5 Mon Sep 17 00:00:00 2001
From: Rekai Musuka <rekai@musuka.dev>
Date: Wed, 5 May 2021 00:01:19 -0500
Subject: [PATCH] fix(ppu): fix off by one error when grabbing sprite address

---
 src/ppu.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ppu.rs b/src/ppu.rs
index 6f9e662..c0b4657 100644
--- a/src/ppu.rs
+++ b/src/ppu.rs
@@ -727,7 +727,7 @@ impl PixelFetcher {
         let scroll_y = pos.scroll_y;
 
         let offset = 2 * if attr.flags.y_flip() {
-            obj_size - (line_y + scroll_y) % 8
+            (obj_size - 1) - (line_y + scroll_y) % 8
         } else {
             (line_y + scroll_y) % 8
         };