From ea2cc82451e63749aa5cbf34a167a472e856f357 Mon Sep 17 00:00:00 2001
From: kobewi <kobewi4e@gmail.com>
Date: Mon, 8 Jun 2026 17:06:13 +0200
Subject: [PATCH] Fix first tile not being randomized

---
 editor/scene/2d/tiles/tile_map_layer_editor.cpp | 4 ++--
 editor/scene/2d/tiles/tile_map_layer_editor.h   | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/editor/scene/2d/tiles/tile_map_layer_editor.cpp b/editor/scene/2d/tiles/tile_map_layer_editor.cpp
index ca776224e1..9cf29c2218 100644
--- a/editor/scene/2d/tiles/tile_map_layer_editor.cpp
+++ b/editor/scene/2d/tiles/tile_map_layer_editor.cpp
@@ -657,8 +657,8 @@ bool TileMapLayerEditorTilesPlugin::forward_canvas_gui_input(const Ref<InputEven
 		Vector2 mpos = xform.affine_inverse().xform(mm->get_position());
 
 		if (edited_layer->local_to_map(drag_last_mouse_pos) != edited_layer->local_to_map(mpos)) {
-			pattern_rng.seed(Math::rand());
-			rng_base_state = Math::rand();
+			pattern_rng.randomize();
+			rng_base_state = pattern_rng.get_state();
 		}
 
 		switch (drag_type) {
diff --git a/editor/scene/2d/tiles/tile_map_layer_editor.h b/editor/scene/2d/tiles/tile_map_layer_editor.h
index 081816f7aa..f3bb4825b7 100644
--- a/editor/scene/2d/tiles/tile_map_layer_editor.h
+++ b/editor/scene/2d/tiles/tile_map_layer_editor.h
@@ -183,7 +183,7 @@ private:
 	RBSet<TileMapCell> tile_set_selection;
 
 	RandomPCG pattern_rng;
-	uint32_t rng_base_state = 0;
+	uint64_t rng_base_state = 0;
 
 	void _update_selection_pattern_from_tilemap_selection();
 	void _update_selection_pattern_from_tileset_tiles_selection();