Redstone (event)
From ComputerCraft Wiki
 Event redstone | |
| Fired when any Redstone inputs change on any of the sides of the computer. | |
| Returned Object 1 | Nothing |
Basic Usage
 Example | |
| Alerts via console output when a redstone input changes. | |
| Code |
while true do
local event = os.pullEvent("redstone")
print("Redstone input changed.")
end
|
| Output | This will tell one when the redstone event is triggered. Note that this doesn't tell you the side of the event. |
Application
| Example | |
| This program will store the values of each redstone signal on load, and on each state change. It will further display on the screen which state was changed. | |
| Code |
-- Set up a list which contains the sides as keys, and the current redstone state of each side as a boolean value
local statelist = {
["top"] = rs.getInput("top"),
["front"] = rs.getInput("front"),
["left"] = rs.getInput("left"),
["right"] = rs.getInput("right"),
["back"] = rs.getInput("back"),
["bottom"] = rs.getInput("bottom"),
}
-- Ready the terminal for printing to
term.clear()
term.setCursorPos(1,1)
while true do -- Start an endless loop
os.pullEvent("redstone") -- Yield the computer until some redstone changes
-- We don't care what the event returns, since the first variable will be "redstone" and the rest will be nil.
-- Now we check each side to see if it's changed.
for side, state in pairs(statelist) do -- Run the lines of code in this loop for each key/value pair in statelist
if rs.getInput(side) ~= state then -- If the side we're checking doesn't match what it was last time we checked then
print(side.." is now "..tostring(rs.getInput(side))) -- Print the new state of the side.
statelist[side] = rs.getInput(side) -- Update the statelist with the new change
end
end
end
|
