From e216c942566c8bc2ea0fd87ffb9c5dca884bdd95 Mon Sep 17 00:00:00 2001
From: mix <167040362+mixiate@users.noreply.github.com>
Date: Sun, 2 Nov 2025 00:46:29 +0000
Subject: [PATCH] Fix #14365: Previews broken for track designs with scenery
 below track

---
 distribution/changelog.txt        | 1 +
 src/openrct2/ride/TrackDesign.cpp | 6 ++----
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/distribution/changelog.txt b/distribution/changelog.txt
index d067a144f8..62138fb6bb 100644
--- a/distribution/changelog.txt
+++ b/distribution/changelog.txt
@@ -1,5 +1,6 @@
 0.4.29 (in development)
 ------------------------------------------------------------------------
+- Fix: [#14365] Track designs with scenery below the lowest track piece do not preview correctly.
 - Fix: [#25451] Dropdown item tooltips stay open if the mouse is moved over an empty space.
 
 0.4.28 (2025-11-01)
diff --git a/src/openrct2/ride/TrackDesign.cpp b/src/openrct2/ride/TrackDesign.cpp
index 307f45478c..bb07e65998 100644
--- a/src/openrct2/ride/TrackDesign.cpp
+++ b/src/openrct2/ride/TrackDesign.cpp
@@ -1942,16 +1942,14 @@ static bool TrackDesignPlacePreview(
     auto mapSize = TileCoordsXY{ gameState.mapSize.x * 16, gameState.mapSize.y * 16 };
 
     _currentTrackPieceDirection = 0;
-    int32_t z = TrackDesignGetZPlacement(
-        tds, td, RideGetTemporaryForPreview(), { mapSize.x, mapSize.y, 16, _currentTrackPieceDirection });
+    const CoordsXYZD coords = { mapSize.x, mapSize.y, kMinimumLandZ, _currentTrackPieceDirection };
+    const int32_t z = kMinimumLandZ + TrackDesignGetZPlacement(tds, td, RideGetTemporaryForPreview(), coords);
 
     if (tds.hasScenery)
     {
         gameStateData.setFlag(TrackDesignGameStateFlag::HasScenery, true);
     }
 
-    z += 16 - tds.placeSceneryZ;
-
     if (_trackDesignPlaceStateSceneryUnavailable)
     {
         placeScenery = false;