I am a noob in this coding world, so I may be coding totally wrong. But, in case I am not, perhaps I have come across coding bug?
As I try to set the values of X and Y for my variable for “picking up items,” specifically coins, I get an error message telling me my “undefined is not an object.” However, this is the same technique demonstrated on the video tutorial, so I am very confused and a bit frustrated as to why this code is not working.
Any feedback would be most appreciated.
ps: i have written the x and y value lower case not upper case as shown in the pic, if that is in any case a factor to the problem.
Thanks!
Here is the pic…
Hah…just posted the same thing ten minutes after you. Using JS though, glad to see it’s happening across the board 
Hope we find a solution.
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ItemX = item.pos.x
& not
ItemX = itemPos.x
&
ItemX = itemPos.pos.x should also work I think
hey thanks for your reply,
i updated the code with itemX= item.Pos.x to no avail!
hmmm…
ItemPos is a user defined variable. In python capital letters do matter. So, x & X are different.
POS and Pos are different.
But note that in codecombat, .pos is a pre-defined function. So better avoid confusing names.
I have not tested whether .POS or .Pos works just like .pos
Perhaps you can try and let us know if it works or not.
Also, item.pos actually returns both x and y coordinate. We define such positions like : {“x”: 34, “y”: 72}
to extract x part from item.pos we do item.pos.x
Similarly for y part.
JS - Java Script I think
If item.pos.x works and item.Pos.x doesn’t, it shows the importance of caps/case
great!
i will talk in very laymen terms because i do not know or conceptualize code efficiently yet.
i want the character to move around the screen and automatically collect the coins as per the direction of where i plant the flag.
i have tried updating the code with lower case letters as in, “itemx = item.pos.x” and it does not work.
the reason i stated it may be a bug because, it worked about an hour ago. i copied the code for which the tutorial stated for that level which i believe was “drop the flag.”
ok i just went back to level, “Copper Meadows,” and in this level the code is the one you described as just
position = item.pos
x = position.x
y= postion.y
self.moveXY(x,y)
i guess i was confused between using the variable
position = item.pos (as shown above in the pic)
VS
itemPos= item.pos
(shown below in the pic)
didn’t think that the way i wrote would affect the outcome (automatically picking up the items)
i will try with your original suggestion " if item:
postion = item.pos
etc…
part of my code (getting success, tried the level right now):
item = self.findNearest(self.findItems())
if item:
self.moveXY(item.pos.x, item.pos.y)
Notice the compactness, all positions need not be defined. They can directly be formulated in the self.moveXY line
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jejeje thanks, that looks a bit like a shortcut, though effective i am still confused as to why my two versions of the code did not work… hmm ill do more reading tonight.
thanks for your feedback!
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