Simple Cobble Gen program getting Do Expected error

I made a cobble generator program. The turtle sits facing where the cobble generates (from lava hitting water), and there is a chest behind the turtle.

I get an error when I run it:

bios:366: [string "cobgen"]:3: 'do' expected

I just dont see the error. Another set of eyes might help. Thanks !

-- Cobblestone Generator program
endearlyflag = 0
while endearlyflag=0 do
	  if turtle.detect()=="true" then -- there is cobble to grab
		 FuelLeft = turtle.getFuelLevel() + 1
		 if FuelLeft < 10 then -- if there is less than 65 fuel in the turtle...
			itct = turtle.getItemCount(16)
			if itct>0 then -- if there is at least 1 item in coal-slot 16...
			   turtle.select(16) -- choose slot 16 on turtle
			   turtle.refuel(1) -- refuel turtle with 1 item from slot 16
			   turtle.select(1) -- choose slot 1 on turtle (default?)
			end
		 else
			 -- out of fuel, stop program
			 endearlyflag = 1
		 end
		 if endearlyflag = 0 then
			-- since there is fuel and cobble to grab then grab it
			turtle.dig()
			-- now if we have collected a stack (64) of cobble, put it in the chest
			-- PUT IF STATEMENT IN HERE TO CHECK FOR STACK BEFORE EXECUTING !!!!!!!!!!!!!
			turtle.turnRight()
			turtle.turnRight()
			turtle.drop()
			turtle.turnRight()
			turtle.turnRight()
		 end
	  end
end

On line 3, change…

while endearlyflag = 0

to…

while endearlyflag == 0

Note the double equals - that's a comparitor - with the single equals, you were trying to set endearlyflag to 0. Not sure if you were already aware of this and just missed it or not, but there it is :)/>

Line 17 will throw a similar error from the same problem.

change

if endearlyflag = 0 then

to

if endearlyflag == 0 then

I fixed that problem but I appear to have a "logic problem". The program runs but does nothing. Not sure why. Any help would be appreciated…

-- Cobblestone Generator program
endearlyflag = 0
while endearlyflag==0 do
	  if turtle.detect()=="true" then -- there is cobble to grab
		 FuelLeft = turtle.getFuelLevel() + 1
		 if FuelLeft < 10 then -- if there is less than 65 fuel in the turtle...
		    itct = turtle.getItemCount(16)
		    if itct>0 then -- if there is at least 1 item in coal-slot 16...
			   turtle.select(16) -- choose slot 16 on turtle
			   turtle.refuel(1) -- refuel turtle with 1 item from slot 16
			   turtle.select(1) -- choose slot 1 on turtle (default?)
		    end
		 else
			 -- out of fuel, stop program
			 endearlyflag = 1
		 end
		 if endearlyflag == 0 then
		    -- since there is fuel and cobble to grab then grab it
		    turtle.dig()
		    -- now if we have collected a stack (64) of cobble, put it in the chest
		    cobct = turtle.getItemCount(1)
		    if cobct>63 then
			   turtle.turnRight()
			   turtle.turnRight()
			   turtle.drop()
			   turtle.turnRight()
			   turtle.turnRight()
		    end
		 end
	  end
end

"true" and true are not the same.

Ok, I removed the quotes from true, and the program no longer locks up, but …

but now the program appears to run through and do nothing. It does not even fuel up.

There is still a flaw in the logic that I do not see. Help ?

-- Cobblestone Generator program
endearlyflag = 0
while endearlyflag==0 do
	  if turtle.detect()=="true" then -- there is cobble to grab
		 FuelLeft = turtle.getFuelLevel() + 1
		 if FuelLeft < 10 then
			itct = turtle.getItemCount(16)
			if itct>0 then -- if there is at least 1 item in coal-slot 16...
			   turtle.select(16) -- choose slot 16 on turtle
			   turtle.refuel(1) -- refuel turtle with 1 item from slot 16
			   turtle.select(1) -- choose slot 1 on turtle (default?)
			else
			  -- out of fuel, stop program
			  endearlyflag = 1
			end
		 end
		 if endearlyflag == 0 then
			-- since there is fuel and cobble to grab then grab it
			turtle.dig()
			-- now if we have collected a stack (64) of cobble, put it in the chest
			cobct = turtle.getItemCount(1)
			if cobct>63 then
			   turtle.turnRight()
			   turtle.turnRight()
			   turtle.drop()
			   turtle.turnRight()
			   turtle.turnRight()
			end
		 end
	  end
end

On line 12 you end the if statement, which checks if there is coal in the 16th slot. Because of this the else statement right below it goes to the if statement that checks if the turtle has less than 10 fuel left. This means that if the turtle has MORE than 10 fuel it will run that else statement, which will change the endearlyflag variable. This will cause the while statement to stop, and the if statement that actually causes the program to do stuff not to return true.

The code above, which I posted corrects that error.

Now the program does nothing. I have to use Ctrl-T to terminate it, and it does not dig the cobble.

TyCamden, on 22 November 2014 - 04:48 PM said:

Now the program does nothing. I have to use Ctrl-T to terminate it, and it does not dig the cobble.

ahh sorry i copied and pasted the code from above, which still has the "true" error

-- Cobblestone Generator program
endearlyflag = 0
while endearlyflag==0 do
	  if turtle.detect()==true then -- there is cobble to grab
		 FuelLeft = turtle.getFuelLevel() + 1
		 if FuelLeft < 10 then
			itct = turtle.getItemCount(16)
			if itct>0 then -- if there is at least 1 item in coal-slot 16...
			   turtle.select(16) -- choose slot 16 on turtle
			   turtle.refuel(1) -- refuel turtle with 1 item from slot 16
			   turtle.select(1) -- choose slot 1 on turtle (default?)
			else
			  -- out of fuel, stop program
			  endearlyflag = 1
			end
		 end
		 if endearlyflag == 0 then
			-- since there is fuel and cobble to grab then grab it
			turtle.dig()
			-- now if we have collected a stack (64) of cobble, put it in the chest
			cobct = turtle.getItemCount(1)
			if cobct>63 then
			   turtle.turnRight()
			   turtle.turnRight()
			   turtle.drop()
			   turtle.turnRight()
			   turtle.turnRight()
			end
		 end
	  end
end

Ah. that did it. Thanks!