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CC-Tweaked/doc/events/modem_message.md
Jonathan Coates 8a203e7454
Re-license several more files under MPL-2.0
- Several files where @MCJack123 is the exclusive contributor. He has
   signed over all contributions to "any OSI-approved license". Thank
   you!

 - Various the file handle classes: Looking at these again, I don't
   think they contain any of the original code.
2023-03-28 10:28:59 +01:00

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Markdown

---
module: [kind=event] modem_message
---
<!--
SPDX-FileCopyrightText: 2021 The CC: Tweaked Developers
SPDX-License-Identifier: MPL-2.0
-->
The @{modem_message} event is fired when a message is received on an open channel on any @{modem}.
## Return Values
1. @{string}: The event name.
2. @{string}: The side of the modem that received the message.
3. @{number}: The channel that the message was sent on.
4. @{number}: The reply channel set by the sender.
5. @{any}: The message as sent by the sender.
6. <span class="type">@{number}|@{nil}</span>: The distance between the sender and the receiver in blocks, or @{nil} if the message was sent between dimensions.
## Example
Wraps a @{modem} peripheral, opens channel 0 for listening, and prints all received messages.
```lua
local modem = peripheral.find("modem") or error("No modem attached", 0)
modem.open(0)
while true do
local event, side, channel, replyChannel, message, distance = os.pullEvent("modem_message")
print(("Message received on side %s on channel %d (reply to %d) from %f blocks away with message %s"):format(
side, channel, replyChannel, distance, tostring(message)
))
end
```