Need help with Computercraft

[Aperturez]

Hi. I need help with some code for a non-advanced computercraft program. I'm building a scoreboard for a game, and I need it to add one to the score each time a redstone switch is hit (and the score is displayed on a monitor). I know how to get the input from a redstone switch and I know how to display it on the monitor, but I don't know how to make it add score each time and display it. I've read the wiki and it didn't really help. Can anyone here help?

 

[rhn]

Something like:

local score = 0
while true do
   if redstone.getInput("back") == true then
      score = score + 1
      monitor.setCursorPos(2,2)
      monitor.write("Score:"..score)
   end
end

 

[Aperturez]

Something like:

local score = 0
while true do
   if redstone.getInput("back") == true do
      score = score + 1
      monitor.setCursorPos(2,2)
      monitor.write("Score:"..score)
   end
end

Thanks.

 

[rhn]

Actually you probably want to do something like this instead:

local score = 0
while true do
local event = os.pullEvent("redstone")
   if redstone.getInput("back") == true then
      score = score + 1
      monitor.setCursorPos(2,2)
      monitor.write("Score:"..score)
   end
end

The os.pullEvent("redstone") will keep yielding until a redstone signal is changed. Else you might end up with problems getting it timed right with the if statement to trigger properly on a redstone pulse.
You can also just add elseif's to the if statements for different sides/redstone strengths/bundled signals for different players scores if you like.

 

[Aperturez]

Actually you probably want to do something like this instead:

local score = 0
while true do
local event = os.pullEvent("redstone")
   if redstone.getInput("back") == true do
      score = score + 1
      monitor.setCursorPos(2,2)
      monitor.write("Score:"..score)
   end
end

The os.pullEvent("redstone") will keep yielding until a redstone signal is changed. Else you might end up with problems getting it timed right with the if statement to trigger properly on a redstone pulse.
You can also just add elseif's to the if statements for different sides/redstone strengths/bundled signals for different players scores if you like.

Alright

 

[rhn]

Just realised when I had to do a bit of other programming that I derped up the if's. It is ofc: "if xxxxx then" not do
Edited other posts to fix the error.