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| Field variables http://45.55.195.193/viewtopic.php?f=73&t=19028 |
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| Author: | findude [ Sat Jun 19, 2010 1:34 pm ] |
| Post subject: | Field variables |
Code: print(self.var) local part part = CreateMOPixel("particle"); MovableMan:AddParticle(part); part.var = self.var+1 print(part.var) prints 1, 2, like it should However the particle that I created still has self.var as nil Is there a workaround to this? Am I doing something wrong? |
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| Author: | Geti [ Sat Jun 19, 2010 2:34 pm ] |
| Post subject: | Re: Field variables |
no part.Pos? |
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| Author: | findude [ Sat Jun 19, 2010 3:50 pm ] |
| Post subject: | Re: Field variables |
Why would that matter? It was in the original script, but has no meaning here. Instead it would just spawn in the scene origin with this one. |
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| Author: | Grif [ Sat Jun 19, 2010 7:10 pm ] |
| Post subject: | Re: Field variables |
because you can't read or write self variables from an external script unless they're the specific lua properties (mass, etc) "part.var" is probably just being created as a new global variable try putting print(part.var) somewhere else in your script (after that bit runs) |
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| Author: | Daman [ Sat Jun 19, 2010 7:19 pm ] |
| Post subject: | Re: Field variables |
if you want a variable to act as a property of an object then you should use metatables |
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| Author: | findude [ Sat Jun 19, 2010 7:53 pm ] |
| Post subject: | Re: Field variables |
Guess I will go with goldcost then. |
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| Author: | none [ Sun Jun 20, 2010 5:27 pm ] |
| Post subject: | Re: Field variables |
perhaps self.var need to be defined as a number like "self.var = 0" Please correct me if I am wrong but isn't "nil" a string value?? |
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| Author: | findude [ Sun Jun 20, 2010 5:30 pm ] |
| Post subject: | Re: Field variables |
Obiviously self.var has been initialized. "nil" means the variable has not been assinged any value; numeric, string, boolean or any other datatype. Which I did. But it didn't work. Hence this thread. |
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| Author: | Abdul Alhazred [ Sun Jun 20, 2010 5:40 pm ] |
| Post subject: | Re: Field variables |
Daman wrote: if you want a variable to act as a property of an object then you should use metatables This sounds very interesting. I thought lua code could not change the metatables of userdata. Maybe you could you explain how to do this? |
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| Author: | Daman [ Mon Jun 21, 2010 4:17 am ] |
| Post subject: | Re: Field variables |
http://lua-users.org/wiki/LuaClassesWithMetatable lmao data should just give the source to me because whatever swede he has working on it doesn't know how to implement lua for ♥♥♥♥ There's no global metatable index, p much everything has something wrong with it. prints should not be prefixed with PRINT: that is dumb hey. i know guys. lets just store everything as completely inaccessible static objects. there u go!! |
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| Author: | Geti [ Mon Jun 21, 2010 4:55 am ] |
| Post subject: | Re: Field variables |
Oh yeah, could you also use a hashed global table? Like, insert the variable into _globaltable[particlepointer] and then get whatever particle particlepointer is pointing to to grab it from _globaltable[self]? I'm not sure if this works in CC, I haven't been able to tinker in a while. |
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