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DarkBASIC Professional Discussion / illegal object number???????

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Graysire
12
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Joined: 18th Oct 2013
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Posted: 15th Jan 2014 19:16
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this code will return an illegal object number...why?
if you need more code ask




mx = mousex() : my = mousey() : mc = mouseclick()

if mc = 1

thisOb = pick object (mx,my,firstOb,lastOb)
cs = object size(thisob)
scale object thisOb, cs-50,cs-50,cs-50
cs=0
endif
if cs<50 then exclude object on thisOb
cs=0
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chafari
Valued Member
20
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Joined: 2nd May 2006
Location: Canary Islands
Posted: 15th Jan 2014 19:23
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Looks like you have a FOR/NEXT that star with 0...we can not have object zero.

I'm not a grumpy grandpa
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Ortu
DBPro Master
18
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Joined: 21st Nov 2007
Location: Austin, TX
Posted: 15th Jan 2014 20:46
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make sure firstOb and lastOb refer to valid objects.

also, i forget if variables are case sensitive, but you are checking size of thisob but assigning variable thisOb, possibly therefore checking the size of object 0 instead of the picked object

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SamKM
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Joined: 25th May 2009
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Posted: 15th Jan 2014 21:18
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Plus, Pick Object returns 0 (an invalid ID) if it can't find any object at the coordinates it's given, so it's a good idea to fool-proof it by making sure thisob is more than 0 before checking object size and stuff
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Graysire
12
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Joined: 18th Oct 2013
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Posted: 16th Jan 2014 19:19
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Thanks samKM
if thisOb > 0 was what we needed
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