From 415375a13dabf4fea05195926d4a27eb83239ca6 Mon Sep 17 00:00:00 2001
From: kulkarohan <kulkarohan@gmail.com>
Date: Thu, 15 Jun 2023 11:35:17 -0400
Subject: [PATCH] perf: cache the royalty schedule sload

---
 src/ERC721Drop.sol | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/ERC721Drop.sol b/src/ERC721Drop.sol
index afe894b..e083bdd 100644
--- a/src/ERC721Drop.sol
+++ b/src/ERC721Drop.sol
@@ -1282,7 +1282,8 @@ contract ERC721Drop is
     }
 
     function _mintSupplyRoyalty(uint256 mintQuantity) internal {
-        if (royaltyMintSchedule == 0) {
+        uint32 royaltySchedule = royaltyMintSchedule;
+        if (royaltySchedule == 0) {
             return;
         }
 
@@ -1291,7 +1292,7 @@ contract ERC721Drop is
             return;
         }
 
-        uint256 totalRoyaltyMints = (mintQuantity + (_totalMinted() % royaltyMintSchedule)) / (royaltyMintSchedule - 1);
+        uint256 totalRoyaltyMints = (mintQuantity + (_totalMinted() % royaltySchedule)) / (royaltySchedule - 1);
         totalRoyaltyMints = MathUpgradeable.min(totalRoyaltyMints, config.editionSize - (mintQuantity + _totalMinted()));
         if (totalRoyaltyMints > 0) {
             _mintNFTs(royaltyRecipient, totalRoyaltyMints);