local logf_console = nil

function logf( fmt, ... )
	logf_console = get_console()
	logf = logf_main
	logf_main( fmt, ... )
end

function logf_main( fmt, ... )
    local c = select( "#", ... )
    if c <= 0 then -- nothing to format
        logf_console:execute( ":" .. string.gsub( fmt, " ", "\160" ) )
    else
        logf_console:execute( ":" .. string.gsub( string.format( fmt, ... ), " ", "\160" ) )
    end
end

local basic_time_factor

function time_shift_start (hour)
    logf("time_shift_start() called")
	basic_time_factor = level.get_time_factor ()

    logf ("Need time : %d:00:00", hour )

    local c_time = level.get_time_hours()
    local n_time = hour
	
    if c_time > n_time then n_time = n_time + 24 end
		
	logf("c_time: %d, n_time: %d", c_time, n_time )	
	
	local time_diff = ( ( n_time - c_time ) )
	local factor = time_diff * (2650*0.25)
	
	logf( "time_diff: %d, factor: %d", time_diff, factor )
	
	game.start_tutorial("time_scaling")
    level.set_time_factor (factor)
    
	logf("time_shift_start() completed")
end

function time_shift_stop()

	level.set_time_factor (basic_time_factor)
	logf("new time: %d", level.get_time_hours() )
	
	spawn_bar_dolg_respawn_3()
	
end


function spawn_bar_dolg_respawn_3( position, total )

	--' Spawn a bunch of dutyers
	local index
	local new_pos, x_offset, z_offset

        local area_longitude, area_latitude = 40, 40
        local height = 10

	logf("start adding dutyers")
	for index = 1, total do -- spawns dutyers numbering from index to total (1...total)
		x_offset = math.random(-(area_longitude/2),(area_longitude/2)) -- 40 gives -20 to 20
		z_offset = math.random(-(area_latitude/2),(area_latitude/2))

		new_pos = vector():set(
                    position.x + x_offset,
                    position.y + height,
                    position.z + z_offset
                )

		alife():create("bar_dolg_respawn_3", 
					new_pos,
					db.actor:level_vertex_id() ,	
					db.actor:game_vertex_id() )
		logf( "dutyers %i created", index )
	end

end

function tell_story( actor, npc )

	logf("tell_story() called")
		
	--'level.add_pp_effector ("vibros.ppe", 234, false)					
	--'time_shift_start( 24 )
	
	--' Spawn 10 dutyers at a specific location
	--' local spawn_point = db.actor:position()	
	local spawn_point = vector():set( 2, 8, 129 )
	spawn_bar_dolg_respawn_3( spawn_point, 2 )
	
	logf("tell_story() completed")
	
end