Add minetest.get_gametime() API function, that returns the number of seconds since the world was created.

doc/lua_api.txt

@@ -1226,6 +1226,7 @@ minetest.get_player_by_name(name) -- Get an ObjectRef to a player
 minetest.get_objects_inside_radius(pos, radius)
 minetest.set_timeofday(val): val: 0...1; 0 = midnight, 0.5 = midday
 minetest.get_timeofday()
+minetest.get_gametime(): returns the time, in seconds, since the world was created
 minetest.find_node_near(pos, radius, nodenames) -> pos or nil
 ^ nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
 minetest.find_nodes_in_area(minp, maxp, nodenames) -> list of positions

src/script/lua_api/l_env.cpp

@@ -476,6 +476,16 @@ int ModApiEnvMod::l_get_timeofday(lua_State *L)
 	return 1;
 }
 
+// minetest.get_gametime()
+int ModApiEnvMod::l_get_gametime(lua_State *L)
+{
+	GET_ENV_PTR;
+
+	int game_time = env->getGameTime();
+	lua_pushnumber(L, game_time);
+	return 1;
+}
+
 
 // minetest.find_node_near(pos, radius, nodenames) -> pos or nil
 // nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
@@ -793,6 +803,7 @@ void ModApiEnvMod::Initialize(lua_State *L, int top)
 	API_FCT(get_objects_inside_radius);
 	API_FCT(set_timeofday);
 	API_FCT(get_timeofday);
+	API_FCT(get_gametime);
 	API_FCT(find_node_near);
 	API_FCT(find_nodes_in_area);
 	API_FCT(get_perlin);

src/script/lua_api/l_env.h

@@ -104,6 +104,9 @@ private:
 	// minetest.get_timeofday() -> 0...1
 	static int l_get_timeofday(lua_State *L);
 
+	// minetest.get_gametime()
+	static int l_get_gametime(lua_State *L);
+
 	// minetest.find_node_near(pos, radius, nodenames) -> pos or nil
 	// nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
 	static int l_find_node_near(lua_State *L);