Difference between revisions of "Redstone (event)"
From ComputerCraft Wiki
(Adding Example code) |
(Added a second more complete example of usage, and how you might treat this event.) |
||
| Line 4: | Line 4: | ||
|name=redstone | |name=redstone | ||
|desc=Fired when any Redstone inputs change on any of the sides of the computer. | |desc=Fired when any Redstone inputs change on any of the sides of the computer. | ||
| − | }} | + | }}=== Basic Usage === |
{{Example | {{Example | ||
|desc=Alerts via console output when a redstone input changes. | |desc=Alerts via console output when a redstone input changes. | ||
| Line 13: | Line 13: | ||
end | end | ||
|output=This will tell one when the redstone event is triggered. Note this doesn't tell you the side of the event. | |output=This will tell one when the redstone event is triggered. Note this doesn't tell you the side of the event. | ||
| + | }}=== Application === | ||
| + | {{Example | ||
| + | |desc=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 | ||
| + | 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") -- Yeild 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 | ||
}} | }} | ||
Revision as of 09:27, 13 January 2013
| This page needs some serious TLC, stat! Please help us by cleaning it, fixing it up, or sparing it some love.
(Reason: A demonstration on the use and handling of this event would be beneficial. AfterLifeLochie 16:13, 30 November 2012 (MSK)) |
 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
event = os.pullEvent("redstone")
print("Redstone input changed.")
end
|
| Output | This will tell one when the redstone event is triggered. Note 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
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") -- Yeild 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
|
