From e55f606b5f8c746cb549a4d3d0195b12d70d4750 Mon Sep 17 00:00:00 2001
From: Christian Heinemann <heinemann.christian@gmail.com>
Date: Thu, 9 Jul 2026 09:06:37 +0200
Subject: [PATCH 1/2] Assign new lineage id when creating seed

---
 source/Gui/GenomeEditorWindow.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/source/Gui/GenomeEditorWindow.cpp b/source/Gui/GenomeEditorWindow.cpp
index f97884247..90df13423 100644
--- a/source/Gui/GenomeEditorWindow.cpp
+++ b/source/Gui/GenomeEditorWindow.cpp
@@ -9,6 +9,7 @@
 #include <Base/GlobalSettings.h>
 #include <Base/StringHelper.h>
 
+#include <EngineInterface/DescEditService.h>
 #include <EngineInterface/GenomeDescInfoService.h>
 #include <EngineInterface/NumberGenerator.h>
 #include <EngineInterface/SimulationFacade.h>
@@ -320,6 +321,7 @@ void GenomeEditorWindow::onCreateSeed(bool provideEnergy)
                                                              .separation(true)))},
         CreatureDesc(),
         genome);
+    DescEditService::get().randomizeLineageIds(seed);
 
     _SimulationFacade::get()->addAndSelectSimulationData(std::move(seed));
     EditorModel::get().update();

From f7b34ef9a348b00487d7592e157af2e777fc2e0f Mon Sep 17 00:00:00 2001
From: Christian Heinemann <heinemann.christian@gmail.com>
Date: Thu, 9 Jul 2026 09:17:25 +0200
Subject: [PATCH 2/2] Use createLineageId for new lineage ids

---
 source/EngineInterface/DescEditService.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/EngineInterface/DescEditService.cpp b/source/EngineInterface/DescEditService.cpp
index cb0d5ac7a..c7ebbd60f 100644
--- a/source/EngineInterface/DescEditService.cpp
+++ b/source/EngineInterface/DescEditService.cpp
@@ -516,7 +516,7 @@ void DescEditService::randomizeCountdowns(Desc& description, int minValue, int m
 void DescEditService::randomizeLineageIds(Desc& description) const
 {
     for (auto& creature : description._creatures) {
-        creature._lineageId = NumberGenerator::get().getRandomInt();
+        creature._lineageId = toInt(NumberGenerator::get().createLineageId());
     }
 }