diff --git a/doc/lua_api.txt b/doc/lua_api.txt
index 782378c1f..8c6fedc1e 100644
--- a/doc/lua_api.txt
+++ b/doc/lua_api.txt
@@ -1237,7 +1237,7 @@ Entity definition (register_entity)
     
     initial_properties = <initial object properties>,
 
-    on_activate = function(self, staticdata),
+    on_activate = function(self, staticdata, dtime_s),
     on_step = function(self, dtime),
     on_punch = function(self, hitter),
     on_rightclick = function(self, clicker),
diff --git a/src/content_sao.cpp b/src/content_sao.cpp
index 843ab29f7..7526e0353 100644
--- a/src/content_sao.cpp
+++ b/src/content_sao.cpp
@@ -376,9 +376,9 @@ LuaEntitySAO::~LuaEntitySAO()
 	}
 }
 
-void LuaEntitySAO::addedToEnvironment()
+void LuaEntitySAO::addedToEnvironment(u32 dtime_s)
 {
-	ServerActiveObject::addedToEnvironment();
+	ServerActiveObject::addedToEnvironment(dtime_s);
 	
 	// Create entity from name
 	lua_State *L = m_env->getLua();
@@ -390,7 +390,7 @@ void LuaEntitySAO::addedToEnvironment()
 		// Initialize HP from properties
 		m_hp = m_prop.hp_max;
 		// Activate entity, supplying serialized state
-		scriptapi_luaentity_activate(L, m_id, m_init_state.c_str());
+		scriptapi_luaentity_activate(L, m_id, m_init_state.c_str(), dtime_s);
 	}
 }
 
@@ -805,9 +805,9 @@ std::string PlayerSAO::getDescription()
 }
 
 // Called after id has been set and has been inserted in environment
-void PlayerSAO::addedToEnvironment()
+void PlayerSAO::addedToEnvironment(u32 dtime_s)
 {
-	ServerActiveObject::addedToEnvironment();
+	ServerActiveObject::addedToEnvironment(dtime_s);
 	ServerActiveObject::setBasePosition(m_player->getPosition());
 	m_player->setPlayerSAO(this);
 	m_player->peer_id = m_peer_id;
diff --git a/src/content_sao.h b/src/content_sao.h
index ff427bac6..05c77e2cb 100644
--- a/src/content_sao.h
+++ b/src/content_sao.h
@@ -43,7 +43,7 @@ public:
 	{ return ACTIVEOBJECT_TYPE_LUAENTITY; }
 	u8 getSendType() const
 	{ return ACTIVEOBJECT_TYPE_GENERIC; }
-	virtual void addedToEnvironment();
+	virtual void addedToEnvironment(u32 dtime_s);
 	static ServerActiveObject* create(ServerEnvironment *env, v3f pos,
 			const std::string &data);
 	void step(float dtime, bool send_recommended);
@@ -118,7 +118,7 @@ public:
 		Active object <-> environment interface
 	*/
 
-	void addedToEnvironment();
+	void addedToEnvironment(u32 dtime_s);
 	void removingFromEnvironment();
 	bool isStaticAllowed() const;
 	bool unlimitedTransferDistance() const;
diff --git a/src/environment.cpp b/src/environment.cpp
index 10ebd4127..4abba6359 100644
--- a/src/environment.cpp
+++ b/src/environment.cpp
@@ -790,7 +790,7 @@ void ServerEnvironment::activateBlock(MapBlock *block, u32 additional_dtime)
 			<<dtime_s<<" seconds old."<<std::endl;*/
 	
 	// Activate stored objects
-	activateObjects(block);
+	activateObjects(block, dtime_s);
 
 	// Run node timers
 	std::map<v3s16, NodeTimer> elapsed_timers =
@@ -1249,7 +1249,7 @@ u16 getFreeServerActiveObjectId(
 u16 ServerEnvironment::addActiveObject(ServerActiveObject *object)
 {
 	assert(object);
-	u16 id = addActiveObjectRaw(object, true);
+	u16 id = addActiveObjectRaw(object, true, 0);
 	return id;
 }
 
@@ -1408,7 +1408,7 @@ ActiveObjectMessage ServerEnvironment::getActiveObjectMessage()
 */
 
 u16 ServerEnvironment::addActiveObjectRaw(ServerActiveObject *object,
-		bool set_changed)
+		bool set_changed, u32 dtime_s)
 {
 	assert(object);
 	if(object->getId() == 0){
@@ -1448,7 +1448,7 @@ u16 ServerEnvironment::addActiveObjectRaw(ServerActiveObject *object,
 	// Register reference in scripting api (must be done before post-init)
 	scriptapi_add_object_reference(m_lua, object);
 	// Post-initialize object
-	object->addedToEnvironment();
+	object->addedToEnvironment(dtime_s);
 	
 	// Add static data to block
 	if(object->isStaticAllowed())
@@ -1585,7 +1585,7 @@ static void print_hexdump(std::ostream &o, const std::string &data)
 /*
 	Convert stored objects from blocks near the players to active.
 */
-void ServerEnvironment::activateObjects(MapBlock *block)
+void ServerEnvironment::activateObjects(MapBlock *block, u32 dtime_s)
 {
 	if(block==NULL)
 		return;
@@ -1609,7 +1609,7 @@ void ServerEnvironment::activateObjects(MapBlock *block)
 				"large amount of objects");
 		return;
 	}
-	// A list for objects that couldn't be converted to static for some
+	// A list for objects that couldn't be converted to active for some
 	// reason. They will be stored back.
 	core::list<StaticObject> new_stored;
 	// Loop through stored static objects
@@ -1639,7 +1639,7 @@ void ServerEnvironment::activateObjects(MapBlock *block)
 				<<"activated static object pos="<<PP(s_obj.pos/BS)
 				<<" type="<<(int)s_obj.type<<std::endl;
 		// This will also add the object to the active static list
-		addActiveObjectRaw(obj, false);
+		addActiveObjectRaw(obj, false, dtime_s);
 	}
 	// Clear stored list
 	block->m_static_objects.m_stored.clear();
diff --git a/src/environment.h b/src/environment.h
index bb1da2461..042229038 100644
--- a/src/environment.h
+++ b/src/environment.h
@@ -312,7 +312,7 @@ private:
 		Returns the id of the object.
 		Returns 0 if not added and thus deleted.
 	*/
-	u16 addActiveObjectRaw(ServerActiveObject *object, bool set_changed);
+	u16 addActiveObjectRaw(ServerActiveObject *object, bool set_changed, u32 dtime_s);
 	
 	/*
 		Remove all objects that satisfy (m_removed && m_known_by_count==0)
@@ -322,7 +322,7 @@ private:
 	/*
 		Convert stored objects from block to active
 	*/
-	void activateObjects(MapBlock *block);
+	void activateObjects(MapBlock *block, u32 dtime_s);
 	
 	/*
 		Convert objects that are not in active blocks to static.
diff --git a/src/scriptapi.cpp b/src/scriptapi.cpp
index 39e2a46e4..9fa927ff3 100644
--- a/src/scriptapi.cpp
+++ b/src/scriptapi.cpp
@@ -6483,7 +6483,7 @@ bool scriptapi_luaentity_add(lua_State *L, u16 id, const char *name)
 }
 
 void scriptapi_luaentity_activate(lua_State *L, u16 id,
-		const std::string &staticdata)
+		const std::string &staticdata, u32 dtime_s)
 {
 	realitycheck(L);
 	assert(lua_checkstack(L, 20));
@@ -6501,8 +6501,9 @@ void scriptapi_luaentity_activate(lua_State *L, u16 id,
 		luaL_checktype(L, -1, LUA_TFUNCTION);
 		lua_pushvalue(L, object); // self
 		lua_pushlstring(L, staticdata.c_str(), staticdata.size());
-		// Call with 2 arguments, 0 results
-		if(lua_pcall(L, 2, 0, 0))
+		lua_pushinteger(L, dtime_s);
+		// Call with 3 arguments, 0 results
+		if(lua_pcall(L, 3, 0, 0))
 			script_error(L, "error running function on_activate: %s\n",
 					lua_tostring(L, -1));
 	}
diff --git a/src/scriptapi.h b/src/scriptapi.h
index 0ae359112..144cb3bc6 100644
--- a/src/scriptapi.h
+++ b/src/scriptapi.h
@@ -167,7 +167,7 @@ void scriptapi_detached_inventory_on_take(lua_State *L,
 // Returns true if succesfully added into Lua; false otherwise.
 bool scriptapi_luaentity_add(lua_State *L, u16 id, const char *name);
 void scriptapi_luaentity_activate(lua_State *L, u16 id,
-		const std::string &staticdata);
+		const std::string &staticdata, u32 dtime_s);
 void scriptapi_luaentity_rm(lua_State *L, u16 id);
 std::string scriptapi_luaentity_get_staticdata(lua_State *L, u16 id);
 void scriptapi_luaentity_get_properties(lua_State *L, u16 id,
diff --git a/src/serverobject.h b/src/serverobject.h
index 6acd0dfee..ece53fd98 100644
--- a/src/serverobject.h
+++ b/src/serverobject.h
@@ -62,7 +62,7 @@ public:
 	{ return getType(); }
 
 	// Called after id has been set and has been inserted in environment
-	virtual void addedToEnvironment(){};
+	virtual void addedToEnvironment(u32 dtime_s){};
 	// Called before removing from environment
 	virtual void removingFromEnvironment(){};
 	// Returns true if object's deletion is the job of the