diff --git a/scene/2d/tile_map.cpp b/scene/2d/tile_map.cpp
index 61f45114de7..3ae7a0b34d0 100644
--- a/scene/2d/tile_map.cpp
+++ b/scene/2d/tile_map.cpp
@@ -358,7 +358,7 @@ TileMap::TerrainConstraint::TerrainConstraint(const TileMap *p_tile_map, const V
 	terrain = p_terrain;
 }
 
-Vector2i TileMap::transform_coords_layout(Vector2i p_coords, TileSet::TileOffsetAxis p_offset_axis, TileSet::TileLayout p_from_layout, TileSet::TileLayout p_to_layout) {
+Vector2i TileMap::transform_coords_layout(const Vector2i &p_coords, TileSet::TileOffsetAxis p_offset_axis, TileSet::TileLayout p_from_layout, TileSet::TileLayout p_to_layout) {
 	// Transform to stacked layout.
 	Vector2i output = p_coords;
 	if (p_offset_axis == TileSet::TILE_OFFSET_AXIS_VERTICAL) {
@@ -1343,7 +1343,7 @@ void TileMap::_rendering_draw_quadrant_debug(TileMapQuadrant *p_quadrant) {
 	}
 }
 
-void TileMap::draw_tile(RID p_canvas_item, Vector2i p_position, const Ref<TileSet> p_tile_set, int p_atlas_source_id, Vector2i p_atlas_coords, int p_alternative_tile, int p_frame, Color p_modulation, const TileData *p_tile_data_override) {
+void TileMap::draw_tile(RID p_canvas_item, const Vector2i &p_position, const Ref<TileSet> p_tile_set, int p_atlas_source_id, const Vector2i &p_atlas_coords, int p_alternative_tile, int p_frame, Color p_modulation, const TileData *p_tile_data_override) {
 	ERR_FAIL_COND(!p_tile_set.is_valid());
 	ERR_FAIL_COND(!p_tile_set->has_source(p_atlas_source_id));
 	ERR_FAIL_COND(!p_tile_set->get_source(p_atlas_source_id)->has_tile(p_atlas_coords));
@@ -2187,7 +2187,7 @@ Ref<TileMapPattern> TileMap::get_pattern(int p_layer, TypedArray<Vector2i> p_coo
 	return output;
 }
 
-Vector2i TileMap::map_pattern(Vector2i p_position_in_tilemap, Vector2i p_coords_in_pattern, Ref<TileMapPattern> p_pattern) {
+Vector2i TileMap::map_pattern(const Vector2i &p_position_in_tilemap, const Vector2i &p_coords_in_pattern, Ref<TileMapPattern> p_pattern) {
 	ERR_FAIL_COND_V(p_pattern.is_null(), Vector2i());
 	ERR_FAIL_COND_V(!p_pattern->has_cell(p_coords_in_pattern), Vector2i());
 
@@ -2211,7 +2211,7 @@ Vector2i TileMap::map_pattern(Vector2i p_position_in_tilemap, Vector2i p_coords_
 	return output;
 }
 
-void TileMap::set_pattern(int p_layer, Vector2i p_position, const Ref<TileMapPattern> p_pattern) {
+void TileMap::set_pattern(int p_layer, const Vector2i &p_position, const Ref<TileMapPattern> p_pattern) {
 	ERR_FAIL_INDEX(p_layer, (int)layers.size());
 	ERR_FAIL_COND(!tile_set.is_valid());
 
@@ -2222,7 +2222,7 @@ void TileMap::set_pattern(int p_layer, Vector2i p_position, const Ref<TileMapPat
 	}
 }
 
-TileSet::TerrainsPattern TileMap::_get_best_terrain_pattern_for_constraints(int p_terrain_set, const Vector2i &p_position, RBSet<TerrainConstraint> p_constraints, TileSet::TerrainsPattern p_current_pattern) {
+TileSet::TerrainsPattern TileMap::_get_best_terrain_pattern_for_constraints(int p_terrain_set, const Vector2i &p_position, const RBSet<TerrainConstraint> &p_constraints, TileSet::TerrainsPattern p_current_pattern) {
 	if (!tile_set.is_valid()) {
 		return TileSet::TerrainsPattern();
 	}
@@ -2235,7 +2235,7 @@ TileSet::TerrainsPattern TileMap::_get_best_terrain_pattern_for_constraints(int
 
 		// Check the center bit constraint
 		TerrainConstraint terrain_constraint = TerrainConstraint(this, p_position, terrain_pattern.get_terrain());
-		RBSet<TerrainConstraint>::Element *in_set_constraint_element = p_constraints.find(terrain_constraint);
+		const RBSet<TerrainConstraint>::Element *in_set_constraint_element = p_constraints.find(terrain_constraint);
 		if (in_set_constraint_element) {
 			if (in_set_constraint_element->get().get_terrain() != terrain_constraint.get_terrain()) {
 				score += in_set_constraint_element->get().get_priority();
@@ -2282,7 +2282,7 @@ TileSet::TerrainsPattern TileMap::_get_best_terrain_pattern_for_constraints(int
 	return min_score_pattern;
 }
 
-RBSet<TileMap::TerrainConstraint> TileMap::_get_terrain_constraints_from_added_pattern(Vector2i p_position, int p_terrain_set, TileSet::TerrainsPattern p_terrains_pattern) const {
+RBSet<TileMap::TerrainConstraint> TileMap::_get_terrain_constraints_from_added_pattern(const Vector2i &p_position, int p_terrain_set, TileSet::TerrainsPattern p_terrains_pattern) const {
 	if (!tile_set.is_valid()) {
 		return RBSet<TerrainConstraint>();
 	}
@@ -2390,7 +2390,7 @@ RBSet<TileMap::TerrainConstraint> TileMap::_get_terrain_constraints_from_painted
 	return constraints;
 }
 
-HashMap<Vector2i, TileSet::TerrainsPattern> TileMap::terrain_fill_constraints(int p_layer, const Vector<Vector2i> &p_to_replace, int p_terrain_set, const RBSet<TerrainConstraint> p_constraints) {
+HashMap<Vector2i, TileSet::TerrainsPattern> TileMap::terrain_fill_constraints(int p_layer, const Vector<Vector2i> &p_to_replace, int p_terrain_set, const RBSet<TerrainConstraint> &p_constraints) {
 	if (!tile_set.is_valid()) {
 		return HashMap<Vector2i, TileSet::TerrainsPattern>();
 	}
@@ -3842,7 +3842,7 @@ void TileMap::set_texture_repeat(CanvasItem::TextureRepeat p_texture_repeat) {
 	}
 }
 
-TypedArray<Vector2i> TileMap::get_surrounding_cells(Vector2i coords) {
+TypedArray<Vector2i> TileMap::get_surrounding_cells(const Vector2i &coords) {
 	if (!tile_set.is_valid()) {
 		return TypedArray<Vector2i>();
 	}
@@ -3880,7 +3880,7 @@ TypedArray<Vector2i> TileMap::get_surrounding_cells(Vector2i coords) {
 	return around;
 }
 
-void TileMap::draw_cells_outline(Control *p_control, RBSet<Vector2i> p_cells, Color p_color, Transform2D p_transform) {
+void TileMap::draw_cells_outline(Control *p_control, const RBSet<Vector2i> &p_cells, Color p_color, Transform2D p_transform) {
 	if (!tile_set.is_valid()) {
 		return;
 	}
diff --git a/scene/2d/tile_map.h b/scene/2d/tile_map.h
index 19f0e5a553c..6f71636e470 100644
--- a/scene/2d/tile_map.h
+++ b/scene/2d/tile_map.h
@@ -155,7 +155,7 @@ public:
 			priority = p_priority;
 		}
 
-		int get_priority() {
+		int get_priority() const {
 			return priority;
 		}
 
@@ -268,8 +268,8 @@ private:
 	void _scenes_draw_quadrant_debug(TileMapQuadrant *p_quadrant);
 
 	// Terrains.
-	TileSet::TerrainsPattern _get_best_terrain_pattern_for_constraints(int p_terrain_set, const Vector2i &p_position, RBSet<TerrainConstraint> p_constraints, TileSet::TerrainsPattern p_current_pattern);
-	RBSet<TerrainConstraint> _get_terrain_constraints_from_added_pattern(Vector2i p_position, int p_terrain_set, TileSet::TerrainsPattern p_terrains_pattern) const;
+	TileSet::TerrainsPattern _get_best_terrain_pattern_for_constraints(int p_terrain_set, const Vector2i &p_position, const RBSet<TerrainConstraint> &p_constraints, TileSet::TerrainsPattern p_current_pattern);
+	RBSet<TerrainConstraint> _get_terrain_constraints_from_added_pattern(const Vector2i &p_position, int p_terrain_set, TileSet::TerrainsPattern p_terrains_pattern) const;
 	RBSet<TerrainConstraint> _get_terrain_constraints_from_painted_cells_list(int p_layer, const RBSet<Vector2i> &p_painted, int p_terrain_set, bool p_ignore_empty_terrains) const;
 
 	// Set and get tiles from data arrays.
@@ -291,7 +291,7 @@ protected:
 	static void _bind_methods();
 
 public:
-	static Vector2i transform_coords_layout(Vector2i p_coords, TileSet::TileOffsetAxis p_offset_axis, TileSet::TileLayout p_from_layout, TileSet::TileLayout p_to_layout);
+	static Vector2i transform_coords_layout(const Vector2i &p_coords, TileSet::TileOffsetAxis p_offset_axis, TileSet::TileLayout p_from_layout, TileSet::TileLayout p_to_layout);
 
 	enum {
 		INVALID_CELL = -1
@@ -307,7 +307,7 @@ public:
 	void set_quadrant_size(int p_size);
 	int get_quadrant_size() const;
 
-	static void draw_tile(RID p_canvas_item, Vector2i p_position, const Ref<TileSet> p_tile_set, int p_atlas_source_id, Vector2i p_atlas_coords, int p_alternative_tile, int p_frame = -1, Color p_modulation = Color(1.0, 1.0, 1.0, 1.0), const TileData *p_tile_data_override = nullptr);
+	static void draw_tile(RID p_canvas_item, const Vector2i &p_position, const Ref<TileSet> p_tile_set, int p_atlas_source_id, const Vector2i &p_atlas_coords, int p_alternative_tile, int p_frame = -1, Color p_modulation = Color(1.0, 1.0, 1.0, 1.0), const TileData *p_tile_data_override = nullptr);
 
 	// Layers management.
 	int get_layers_count() const;
@@ -350,11 +350,11 @@ public:
 
 	// Patterns.
 	Ref<TileMapPattern> get_pattern(int p_layer, TypedArray<Vector2i> p_coords_array);
-	Vector2i map_pattern(Vector2i p_position_in_tilemap, Vector2i p_coords_in_pattern, Ref<TileMapPattern> p_pattern);
-	void set_pattern(int p_layer, Vector2i p_position, const Ref<TileMapPattern> p_pattern);
+	Vector2i map_pattern(const Vector2i &p_position_in_tilemap, const Vector2i &p_coords_in_pattern, Ref<TileMapPattern> p_pattern);
+	void set_pattern(int p_layer, const Vector2i &p_position, const Ref<TileMapPattern> p_pattern);
 
 	// Terrains.
-	HashMap<Vector2i, TileSet::TerrainsPattern> terrain_fill_constraints(int p_layer, const Vector<Vector2i> &p_to_replace, int p_terrain_set, const RBSet<TerrainConstraint> p_constraints); // Not exposed.
+	HashMap<Vector2i, TileSet::TerrainsPattern> terrain_fill_constraints(int p_layer, const Vector<Vector2i> &p_to_replace, int p_terrain_set, const RBSet<TerrainConstraint> &p_constraints); // Not exposed.
 	HashMap<Vector2i, TileSet::TerrainsPattern> terrain_fill_connect(int p_layer, const Vector<Vector2i> &p_coords_array, int p_terrain_set, int p_terrain, bool p_ignore_empty_terrains = true); // Not exposed.
 	HashMap<Vector2i, TileSet::TerrainsPattern> terrain_fill_path(int p_layer, const Vector<Vector2i> &p_coords_array, int p_terrain_set, int p_terrain, bool p_ignore_empty_terrains = true); // Not exposed.
 	HashMap<Vector2i, TileSet::TerrainsPattern> terrain_fill_pattern(int p_layer, const Vector<Vector2i> &p_coords_array, int p_terrain_set, TileSet::TerrainsPattern p_terrains_pattern, bool p_ignore_empty_terrains = true); // Not exposed.
@@ -400,8 +400,8 @@ public:
 	void force_update(int p_layer = -1);
 
 	// Helpers?
-	TypedArray<Vector2i> get_surrounding_cells(Vector2i coords);
-	void draw_cells_outline(Control *p_control, RBSet<Vector2i> p_cells, Color p_color, Transform2D p_transform = Transform2D());
+	TypedArray<Vector2i> get_surrounding_cells(const Vector2i &coords);
+	void draw_cells_outline(Control *p_control, const RBSet<Vector2i> &p_cells, Color p_color, Transform2D p_transform = Transform2D());
 
 	// Virtual function to modify the TileData at runtime
 	GDVIRTUAL2R(bool, _use_tile_data_runtime_update, int, Vector2i);