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tokei.lua
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tokei.lua
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-- tokei
-- view clock
-- E3 - change timezone
-- K2 - sound on/off
-- load the polyperc
engine.name = 'PolyPerc'
-- select tz number may change by E3
selected_time_zone = 2
-- Table of world time zones
local world_time_zones = {
{ name = "UTC", offset = 0 },
{ name = "JST/KST", offset = 9 },
{ name = "PST", offset = -8 },
{ name = "EST", offset = -5 },
{ name = "CST", offset = -6 },
{ name = "GMT", offset = 0 },
{ name = "AEST", offset = 10 },
{ name = "BST", offset = 1 },
{ name = "IST", offset = 5.5 },
{ name = "CET", offset = 1 },
{ name = "MSK", offset = 3 },
{ name = "SGT", offset = 8 },
{ name = "ART", offset = -3 },
{ name = "AKST", offset = -9 },
{ name = "HST", offset = -10 },
{ name = "NZST", offset = 12 }
}
-- Initialize variables
state = true
intClock = 0
half_seconds = false -- Initialize half_seconds to false
clockView = 0
dayView = 0
-- init synth
function initSynth()
-- configure the synth --[[ 0_0 ]]--
engine.release(1)
engine.pw(0.5)
engine.cutoff(1000)
end
-- Initialize function
function init()
initSynth()
frame() -- Call the frame function
framer = metro.init(frame, 0.5, -1) -- Set up the metro to call the frame function every 30ms
framer:start() -- Start the metro
end
-- Frame function to update the time and date
function frame()
local clockOffset = world_time_zones[selected_time_zone].offset
local s, us = _norns.get_time()
local timestamp = s + clockOffset * 3600 -- Apply the offset to the UNIX timestamp
-- Calculate seconds from the given UNIX timestamp
local total_seconds = timestamp
local current_seconds = total_seconds % 86400
-- Calculate hours and minutes
local hours = math.floor(current_seconds / 3600)
local minutes = math.floor((current_seconds % 3600) / 60)
local seconds = current_seconds % 60
-- Format the time as "hh:mm"
local formatted_time = string.format("%02d:%02d:%02d", hours, minutes, seconds)
-- Check if seconds is xx:xx:00 or xx:xx:30
if seconds % 60 == 0 or seconds % 60 == 30 then
half_seconds = true
else
half_seconds = false
end
-- Calculate date from the UNIX timestamp
local unix_epoch = 1970 * 365 * 24 * 60 * 60 -- Calculate the number of seconds from 1970 to the present
local current_seconds = total_seconds % 86400
local current_days = math.floor(total_seconds / 86400)
-- Calculate the year, month, and day from the total days
local years = 1970
local months, days = 1, 1
-- Calculate the year
while current_days >= 365 do
if ((years % 4 == 0 and years % 100 ~= 0) or years % 400 == 0) then
if current_days >= 366 then
current_days = current_days - 366
years = years + 1
else
break
end
else
current_days = current_days - 365
years = years + 1
end
end
local feb_days
if (years % 4 == 0 and years % 100 ~= 0) or years % 400 == 0 then
feb_days = 29
else
feb_days = 28
end
-- Calculate the days in each month
local days_in_month = { 31, feb_days, 31, 30, 31,
30, 31, 31, 30, 31, 30, 31 }
-- Calculate the month and day
for i = 1, 12 do
if current_days < days_in_month[i] then
months = i
days = current_days + 1
break
else
current_days = current_days - days_in_month[i]
end
end
-- Format the date as "yy/mm/dd"
local formatted_days = string.format("%02d/%02d/%02d", years, months, days)
-- Set the time and date for display
clockView = formatted_time
dayView = formatted_days
--
if state == true then
timeTones()
end
redraw() -- Call the redraw function to update the screen
end
function timeTones()
if half_seconds == true then
engine.release(0.5)
engine.hz(440 * 2)
elseif half_seconds == false then
engine.release(1)
engine.hz(440 * 3)
end
end
-- Redraw function to update the screen
function redraw()
screen.clear() -- Clear the screen
screen.aa(0) -- Disable anti-aliasing
screen.level(2) -- Set the screen brightness
screen.font_face(1)
-- Display the time-zone
screen.font_size(8)
screen.move(0, 26)
screen.text(world_time_zones[selected_time_zone].name)
screen.level(10) -- Set the screen brightness
-- Display the date
screen.font_size(14)
screen.move(0, 40)
screen.text(dayView)
-- Display the clock
screen.font_size(24)
screen.move(0, 60)
screen.text(clockView)
-- Display the play state
screen.font_size(8)
screen.move(120, 60)
if state == true then
screen.text(">")
elseif state == false then
screen.text("_")
end
-- Print the internal clock (optional)
screen.update() -- Update the screen
end
function enc(n, d)
if n == 3 then
selected_time_zone = math.min(10, math.max(1, selected_time_zone + d))
frame()
end
end
function key(n, z)
if z == 1 then
if n == 2 then
if state == true then
state = false
elseif state == false then
state = true
end
end
end
end