Fix #23135: Tree placement has noticable patterns

distribution/changelog.txt

@@ -9,6 +9,7 @@
 - Change: [#23413] The max number of park entrance objects has been raised to 255.
 - Fix: [#1122] Trains spawned on a cable lift hill will fall down and crash (original bug).
 - Fix: [#22742, #22793] In game console does not handle format tokens properly.
+- Fix: [#23135] Map generator tree placement has noticable patterns.
 - Fix: [#23286] Currency formatted incorrectly in the in game console.
 - Fix: [#23348] Console set commands don't print output properly.
 - Fix: [#23376] Peeps with balloons, hats and umbrellas may leave artifacts on screen.

src/openrct2/world/map_generator/TreePlacement.cpp

@@ -147,6 +147,9 @@ namespace OpenRCT2::World::MapGenerator
         // Place trees
         float treeToLandRatio = static_cast<float>(settings->treeToLandRatio) / 100.0f;
 
+        // Randomise simplex noise
+        NoiseRand();
+
         auto& gameState = GetGameState();
         for (int32_t y = 1; y < gameState.MapSize.y - 1; y++)
         {