From 5cdcfcc0b3eb9a94a04eadeba1262a8475a7c06a Mon Sep 17 00:00:00 2001
From: Corwin Kuiper <corwin@kuiper.dev>
Date: Sun, 30 May 2021 17:00:01 +0100
Subject: [PATCH] add set bits function

---
 agb/src/display/object.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/agb/src/display/object.rs b/agb/src/display/object.rs
index a7f1ccab..49f217e0 100644
--- a/agb/src/display/object.rs
+++ b/agb/src/display/object.rs
@@ -46,6 +46,11 @@ impl ObjectStandard {
     }
 }
 
+fn set_bits(current: u16, value: u16, length: u16, shift: u16) -> u16 {
+    let mask: u16 = (1 << length) - 1;
+    (current & !(mask << shift)) | ((value & mask) << shift)
+}
+
 pub struct ObjectAttribute {
     a0: u16,
     a1: u16,