Just 7 Basic Modem/turtle Questions.

Got 5 questions i was unable to get answers by testing.

1) Does turtle in movement still receives modem messages? I realize movement functions discard event queue but with parallel i can have one function for movement and other for wireless. I was unable to get 100% sure result on this one.

2) Would 10-15 turtles sending 10 character string modem messages to each-other (all on same frequency) every 2-5 sec have any negative effects in SMP situation? My test didn't show any negatives but i want to be sure.

3) Would effects of 2) connected with movement and/or mining by those turtles have greater effect?

4) Again in case 2) would using Top Level Coroutine Overwrite to get rid of rednet coroutine lessen negative effect? I am thinking about using it anyways cause all those rednet_message events are ignored in this design.

5) What about 50 turtles? :P/>

1. Yes.
2. This depends on how crappy the server is. 2-5 seconds shouldn't show an deleterious effects on most servers.
3. More computation/work being done by the server will always result in decreased tick rate, even if it isn't noticeable, or isn't decreased to below 20t/s.
4. Possibly, but see 3.
5. See 3.

Got 2 more fast questions that are not worth new Topic i feel.

1) Is there a way to detect if program was run as startup or executed from shell?
I mean difference between auto-run and player run startup file.

2) Is there a way to detect if player is holding down ctrl+s or ctrl+r? I know i cant stop those events but in this one sec i could stop movements calls so my positioning script would not loose his position again. I tried capturing ctrl and r key events but that didn't work.

1'st i do not believe there is a difference between shell.run and a user started program


2'nd
can't see why this shouldn't work

event, key = os.pullEvent("key")
if key == 29 or key == 157 and key == 19 or key == 31 then
...
end

wojbie, on 10 October 2013 - 05:34 PM said:

1) Is there a way to detect if program was run as startup or executed from shell?
I mean difference between auto-run and player run startup file.

Scripts can call scripts. You could create a startup script that simply calls your main program with a special parameter/arguement, tipping it off as to how it was being launched.

wojbie, on 10 October 2013 - 05:34 PM said:

2) Is there a way to detect if player is holding down ctrl+s or ctrl+r? I know i cant stop those events but in this one sec i could stop movements calls so my positioning script would not loose his position again. I tried capturing ctrl and r key events but that didn't work.

Other things can restart turtles too (eg the Minecraft server rebooting). I suspect you'd be better off rigging your script so that it can correctly determine its position on boot. Since you're using modems anyway you may as well implement a GPS system.

Bomb Bloke, on 10 October 2013 - 07:15 PM said:

Scripts can call scripts. You could create a startup script that simply calls your main program with a special parameter/arguement, tipping it off as to how it was being launched.

Facepalm - I am such idiot to didn't think of that.

Bomb Bloke, on 10 October 2013 - 07:15 PM said:

Other things can restart turtles too (eg the Minecraft server rebooting). I suspect you'd be better off rigging your script so that it can correctly determine its position on boot. Since you're using modems anyway you may as well implement a GPS system.

Funny thing is i crashed server few times and shut it down brutally, and no problem - positioning system kept position.
But one Ctrl-t or Ctrl-s and stuff gets weird. Like it reboots/shutdowns in middle of turtle movement on purpose . Anyways figured out solution to this one. When you hold Ctrl and press any buttons there are key events but there is no char event - so if i catch key event and verify that char event don't happen then i know program will probably be shutting down under sec - can stop movement functions. Then if nothing happens in like 10s? False alarm resuming movement.
I don't trust GPS systems as a rule. You never know when someone messed with one of those and your turtle decides that best path to destination is trough middle of your base.

MR_nesquick, on 10 October 2013 - 06:28 PM said:

can't see why this shouldn't work

event, key = os.pullEvent("key")
if key == 29 or key == 157 and key == 19 or key == 31 then
...
end

That condition would never evaluate to true. That line is essentially equivalent to `if false then`.

Lyqyd, on 10 October 2013 - 08:12 PM said:

MR_nesquick, on 10 October 2013 - 06:28 PM said:

can't see why this shouldn't work

event, key = os.pullEvent("key")
if key == 29 or key == 157 and key == 19 or key == 31 then
...
end

That condition would never evaluate to true. That line is essentially equivalent to `if false then`.

would this return false? i understand the if statement is messed up
heres why:

if key == 29 or key == 157 and key == 19 or key == 31 then

go throuh this logically and you get
1. if key == 29 then continue
2. or if key == 157 then continue
the rest just want do it put it brackets like this maybe?

if (key == 29 or key == 157) and (key == 19 or key == 31) then

not sure if thats how you want it but another problem arises: you have an and in there
so it is checking if its key == 29 or key == 157 and key also == 19 or 31 … see the problem key is only one value but you want it to be two

Lyqyd, on 10 October 2013 - 08:12 PM said:

MR_nesquick, on 10 October 2013 - 06:28 PM said:

can't see why this shouldn't work

event, key = os.pullEvent("key")
if key == 29 or key == 157 and key == 19 or key == 31 then
...
end

That condition would never evaluate to true. That line is essentially equivalent to `if false then`.

To clarify, you have an "and" instead of an "or"

Posting testing code i used that detects ctrl+r or ctrl+s events if someone needs it.
It can be used to detect other ctrl+char combinations if modified.
Left some test os.queueEvent as proof that it rebuilds event queue after its done with what its doing.

Spoiler

--Char testing
local function testforchar(A)
local out=false
local test=keys.getName(A)
local tempT={}
os.queueEvent("1 event"," test1")
os.queueEvent("2 event"," test2")
os.queueEvent("3 event"," test3")
os.queueEvent("4 event"," test4")
os.queueEvent("testchar"..test)

while true do
  table.insert(tempT,{os.pullEvent()})
  print(unpack(tempT[#tempT]))
  if tempT[#tempT][1]=="char" then
   if tempT[#tempT][2]==test then out=true end
  elseif tempT[#tempT][1]=="testchar"..test then
   table.remove(tempT,#tempT) break
  end
end

while #tempT >0 do
  os.queueEvent(unpack(table.remove(tempT)))
end

return out
end

--Program Start

sleep(0.01)
local event={}
while true do
event={os.pullEvent()}
print(unpack(event))
if event[1]=="key" then
  if event[2]==19 or event[2]==31 then
   if not testforchar(event[2]) then
	print("Its happening")
   else
	print("Normal letter")
   end
  end
end
end