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31 lines
1.2 KiB
Markdown
31 lines
1.2 KiB
Markdown
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---
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module: [kind=event] rednet_message
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see: modem_message For raw modem messages sent outside of Rednet.
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see: rednet.receive To wait for a Rednet message with an optional timeout and protocol filter.
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---
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The @{rednet_message} event is fired when a message is sent over Rednet.
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This event is usually handled by @{rednet.receive}, but it can also be pulled manually.
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@{rednet_message} events are sent by @{rednet.run} in the top-level coroutine in response to @{modem_message} events. A @{rednet_message} event is always preceded by a @{modem_message} event. They are generated inside CraftOS rather than being sent by the ComputerCraft machine.
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## Return Values
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1. @{string}: The event name.
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2. @{number}: The ID of the sending computer.
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3. @{any}: The message sent.
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4. @{string|nil}: The protocol of the message, if provided.
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## Example
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Prints a message when one is sent:
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```lua
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while true do
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local event, sender, message, protocol = os.pullEvent("rednet_message")
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if protocol ~= nil then
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print("Received message from " .. sender .. " with protocol " .. protocol .. " and message " .. tostring(message))
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else
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print("Received message from " .. sender .. " with message " .. tostring(message))
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end
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end
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```
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