Now the world can be deactivated when needed.

world/default/terra_world_default.cpp

@@ -62,6 +62,10 @@ void TerraWorldDefault::set_num_lods(const int value) {
 }
 
 void TerraWorldDefault::update_lods() {
+	if (!get_active()) {
+		return;
+	}
+
 	call("_update_lods");
 }
 
@@ -191,7 +195,7 @@ Ref<TerraChunk> TerraWorldDefault::_create_chunk(int x, int z, Ref<TerraChunk> c
 		s.instance();
 		s->set_job_type(TerraMesherJobStep::TYPE_NORMAL);
 		tj->add_jobs_step(s);
-		
+
 		s.instance();
 		s->set_job_type(TerraMesherJobStep::TYPE_NORMAL_LOD);
 		s->set_lod_index(1);
@@ -261,6 +265,34 @@ TerraWorldDefault::TerraWorldDefault() {
 TerraWorldDefault ::~TerraWorldDefault() {
 }
 
+void TerraWorldDefault::_notification(int p_what) {
+	TerraWorld::_notification(p_what);
+
+	switch (p_what) {
+		case NOTIFICATION_ACTIVE_STATE_CHANGED: {
+			if (!is_inside_tree()) {
+				return;
+			}
+
+			bool active = get_active();
+
+			for (int i = 0; i < chunk_get_count(); ++i) {
+				Ref<TerraChunk> chunk = chunk_get_index(i);
+
+				if (chunk.is_valid()) {
+					chunk->set_visible(active);
+				}
+			}
+
+			if (active) {
+				update_lods();
+			}
+
+			break;
+		}
+	}
+}
+
 /*
 void TerraWorldDefault::_notification(int p_what) {
 	TerraWorld::_notification(p_what);

world/default/terra_world_default.h

@@ -52,6 +52,7 @@ public:
 	~TerraWorldDefault();
 
 protected:
+	void _notification(int p_what);
 	void _update_lods();
 	Ref<TerraChunk> _create_chunk(int x, int z, Ref<TerraChunk> p_chunk);
 	virtual void _chunk_added(Ref<TerraChunk> chunk);

world/terra_world.cpp

@@ -43,6 +43,15 @@ SOFTWARE.
 
 const String TerraWorld::BINDING_STRING_CHANNEL_TYPE_INFO = "Type,Isolevel,Liquid,Liquid Level";
 
+bool TerraWorld::get_active() const {
+	return _active;
+}
+void TerraWorld::set_active(const bool value) {
+	_active = value;
+
+	notification(NOTIFICATION_ACTIVE_STATE_CHANGED);
+}
+
 bool TerraWorld::get_editable() const {
 	return _editable;
 }
@@ -371,6 +380,10 @@ Ref<TerraChunk> TerraWorld::_create_chunk(const int x, const int z, Ref<TerraChu
 	chunk->set_size(_chunk_size_x, _chunk_size_z, _data_margin_start, _data_margin_end);
 	//chunk->set_translation(Vector3(x * _chunk_size_x * _voxel_scale, y * _chunk_size_y * _voxel_scale, z * _chunk_size_z * _voxel_scale));
 
+	if (!get_active()) {
+		chunk->set_visible(false);
+	}
+
 	chunk_add(chunk, x, z);
 
 	return chunk;
@@ -792,6 +805,7 @@ int TerraWorld::get_channel_index_info(const TerraWorld::ChannelTypeInfo channel
 }
 
 TerraWorld::TerraWorld() {
+	_active = true;
 	_editable = false;
 
 	_is_priority_generation = true;
@@ -871,7 +885,8 @@ void TerraWorld::_notification(int p_what) {
 					chunk->build();
 				}
 			}
-		} break;
+			break;
+		}
 		case NOTIFICATION_INTERNAL_PROCESS: {
 			_num_frame_chunk_build_steps = 0;
 
@@ -929,7 +944,8 @@ void TerraWorld::_notification(int p_what) {
 
 				chunk_generate(chunk);
 			}
-		} break;
+			break;
+		}
 		case NOTIFICATION_INTERNAL_PHYSICS_PROCESS: {
 			for (int i = 0; i < _chunks_vector.size(); ++i) {
 				Ref<TerraChunk> chunk = _chunks_vector[i];
@@ -944,8 +960,8 @@ void TerraWorld::_notification(int p_what) {
 					chunk->generation_physics_process(get_physics_process_delta_time());
 				}
 			}
-
-		} break;
+			break;
+		}
 		case NOTIFICATION_EXIT_TREE: {
 			for (int i = 0; i < _chunks_vector.size(); ++i) {
 				Ref<TerraChunk> chunk = _chunks_vector[i];
@@ -957,8 +973,8 @@ void TerraWorld::_notification(int p_what) {
 					}
 				}
 			}
-
-		} break;
+			break;
+		}
 		case NOTIFICATION_TRANSFORM_CHANGED: {
 			for (int i = 0; i < _chunks_vector.size(); ++i) {
 				Ref<TerraChunk> chunk = _chunks_vector[i];
@@ -967,14 +983,18 @@ void TerraWorld::_notification(int p_what) {
 					chunk->world_transform_changed();
 				}
 			}
-
-		} break;
+			break;
+		}
 	}
 }
 
 void TerraWorld::_bind_methods() {
 	ADD_SIGNAL(MethodInfo("chunk_mesh_generation_finished", PropertyInfo(Variant::OBJECT, "chunk", PROPERTY_HINT_RESOURCE_TYPE, "TerraChunk")));
 
+	ClassDB::bind_method(D_METHOD("get_active"), &TerraWorld::get_active);
+	ClassDB::bind_method(D_METHOD("set_active", "value"), &TerraWorld::set_active);
+	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "active"), "set_active", "get_active");
+
 	ClassDB::bind_method(D_METHOD("get_editable"), &TerraWorld::get_editable);
 	ClassDB::bind_method(D_METHOD("set_editable", "value"), &TerraWorld::set_editable);
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "editable"), "set_editable", "get_editable");
@@ -1131,4 +1151,6 @@ void TerraWorld::_bind_methods() {
 	BIND_ENUM_CONSTANT(CHANNEL_TYPE_INFO_TYPE);
 	BIND_ENUM_CONSTANT(CHANNEL_TYPE_INFO_ISOLEVEL);
 	BIND_ENUM_CONSTANT(CHANNEL_TYPE_INFO_LIQUID_FLOW);
+
+	BIND_CONSTANT(NOTIFICATION_ACTIVE_STATE_CHANGED);
 }

world/terra_world.h

@@ -26,11 +26,11 @@ SOFTWARE.
 #include "core/version.h"
 
 #if VERSION_MAJOR > 3
-#include "core/templates/hash_map.h"
 #include "core/config/engine.h"
+#include "core/templates/hash_map.h"
 #else
-#include "core/hash_map.h"
 #include "core/engine.h"
+#include "core/hash_map.h"
 #endif
 
 #include "../defines.h"
@@ -61,9 +61,16 @@ public:
 		CHANNEL_TYPE_INFO_LIQUID_FLOW,
 	};
 
+	enum {
+		NOTIFICATION_ACTIVE_STATE_CHANGED = 9000,
+	};
+
 	static const String BINDING_STRING_CHANNEL_TYPE_INFO;
 
 public:
+	bool get_active() const;
+	void set_active(const bool value);
+
 	bool get_editable() const;
 	void set_editable(const bool value);
 
@@ -228,6 +235,7 @@ public:
 	};
 
 private:
+	bool _active;
 	bool _editable;
 
 	bool _is_priority_generation;
@@ -245,22 +253,22 @@ private:
 	int _chunk_spawn_range;
 
 	HashMap<IntPos, Ref<TerraChunk>, IntPosHasher> _chunks;
-	Vector<Ref<TerraChunk> > _chunks_vector;
+	Vector<Ref<TerraChunk>> _chunks_vector;
 
-	Vector<Ref<TerraWorldArea> > _world_areas;
+	Vector<Ref<TerraWorldArea>> _world_areas;
 
-	Vector<Ref<TerraStructure> > _voxel_structures;
+	Vector<Ref<TerraStructure>> _voxel_structures;
 
 	NodePath _player_path;
 	Spatial *_player;
 
 	int _max_concurrent_generations;
-	Vector<Ref<TerraChunk> > _generation_queue;
-	Vector<Ref<TerraChunk> > _generating;
+	Vector<Ref<TerraChunk>> _generation_queue;
+	Vector<Ref<TerraChunk>> _generating;
 	int _max_frame_chunk_build_steps;
 	int _num_frame_chunk_build_steps;
 
-	Vector<Ref<TerraLight> > _lights;
+	Vector<Ref<TerraLight>> _lights;
 };
 
 _FORCE_INLINE_ bool operator==(const TerraWorld::IntPos &a, const TerraWorld::IntPos &b) {