From 9d44ac0b47e7bbb8dfffef0c61a67051f7b1aab7 Mon Sep 17 00:00:00 2001
From: Julian Krings <juliankrings6@gmail.com>
Date: Sat, 21 Jun 2025 12:04:07 +0200
Subject: [PATCH] fix caves being non-deterministic

---
 .../com/volmit/iris/engine/object/IrisCavePlacer.java  | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/core/src/main/java/com/volmit/iris/engine/object/IrisCavePlacer.java b/core/src/main/java/com/volmit/iris/engine/object/IrisCavePlacer.java
index eb97b14fd..c56a53d69 100644
--- a/core/src/main/java/com/volmit/iris/engine/object/IrisCavePlacer.java
+++ b/core/src/main/java/com/volmit/iris/engine/object/IrisCavePlacer.java
@@ -86,13 +86,9 @@ public class IrisCavePlacer implements IRare {
         }
 
         if (y == -1) {
-            if(!breakSurface) {
-                int eH = engine.getHeight(x, z);
-                if (caveStartHeight.getMax() > eH) {
-                    caveStartHeight.setMax(eH);
-                }
-            }
-            y = (int) caveStartHeight.get(rng, x, z, data);
+            int h = (int) caveStartHeight.get(rng, x, z, data);
+            int ma = breakSurface ? h : (int) (engine.getComplex().getHeightStream().get(x, z) - 9);
+            y = Math.min(h, ma);
         }
 
         try {