From 6e995972bba107d1e3dfd5361fd7620d8ce748ab Mon Sep 17 00:00:00 2001
From: Erich Schubert <erich.schubert@tu-dortmund.de>
Date: Sat, 1 Mar 2025 17:15:02 +0100
Subject: [PATCH] check y limits early

---
 src/mapgen/mg_decoration.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/mapgen/mg_decoration.cpp b/src/mapgen/mg_decoration.cpp
index 8253916633..dcf32acb7b 100644
--- a/src/mapgen/mg_decoration.cpp
+++ b/src/mapgen/mg_decoration.cpp
@@ -126,6 +126,10 @@ bool Decoration::canPlaceDecoration(MMVManip *vm, v3s16 p)
 
 void Decoration::placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax)
 {
+	// Skip if y ranges do not overlap
+	if (nmax.Y < y_min || y_max < nmin.Y)
+		return;
+
 	PcgRandom ps(blockseed + 53);
 	int carea_size = nmax.X - nmin.X + 1;