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bknight2602
Grandmaster Cheater
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Joined: 08 Oct 2012
Posts: 577
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 Posted: Sat Apr 04, 2015 1:11 pm Post subject: Unexpected behavior of LUA (maybe) |
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OK, I'm doing a recalculation of addresses on a new table/game and ran into two problems. I'm attempting to EXCLUDE the "Gold" address as the game puts the data very near the start of memory and at this time doesn't seem to change.
THIS DID NOT WORK, AS THE GOLD ADDRESS WAS UPDATED.
| Code: |
for j=0, addresslist_getCount(AL)-1 do
print("Record number " .. j + 1 .." has a description of " .. memoryrecord_getDescription(addresslist_getMemoryRecordByID(AL, j)))
if memoryrecord_getDescription(addresslist_getMemoryRecordByID(AL, j)) ~= "Gold" then
local mr = addresslist_getMemoryRecord(AL, j)
local newAddress = memoryrecord_getAddress(mr) + correction
memoryrecord_setAddress(mr,string.format('%x', newAddress))
end--if addresslist_getMemoryRecordByDescription(AL, j) ~= "Gold" then
end -- loop 'for j' end |
THIS WORKS, AS THE GOLD ADDRESS WAS NOT CHANGED.
| Code: |
for j=0, addresslist_getCount(AL)-1 do
memrec1 = addresslist_getMemoryRecordByID(AL, j)
memrec2 = memoryrecord_getDescription(memrec1)
print("Record number " .. j + 1 .." has a description of " .. memrec2)
if memrec2 ~= "Gold" then
local mr = addresslist_getMemoryRecord(AL, j)
local newAddress = memoryrecord_getAddress(mr) + correction
memoryrecord_setAddress(mr,string.format('%x', newAddress))
end--if memrec2 ~= "Gold" then
end -- loop 'for j' end |
Why the difference in the two?
Secondly the table has some addresses from a previous session, that aren't in the current session and the for loop j never finished as there was a "Access error". I remember an error bypass that DB shoed me long ago, but this dealt with a scan, this seems different.
Is there a onError jump to next step in LUA or CE?
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Zanzer
I post too much
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Joined: 09 Jun 2013
Posts: 3278
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| Posted: Sat Apr 04, 2015 1:31 pm Post subject: |
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Do your memoryrecord_getDescription() or addresslist_getMemoryRecordByID() functions return multiple values?
Error handling: http://www.lua.org/pil/8.4.html
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mgr.inz.Player
I post too much
 Reputation: 218
Joined: 07 Nov 2008
Posts: 4438
Location: W kraju nad Wisla. UTC+01:00
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| Posted: Sat Apr 04, 2015 1:35 pm Post subject: |
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| Quote: | | Secondly the table has some addresses from a previous session, that aren't in the current session and the for loop j never finished as there was a "Access error". |
Don't iterate on IDs. Iterate on indexes.
Secondly, try changing your code to something more readable.
Example:
instead of this
| Code: | | memrec2 = memoryrecord_getDescription(memrec1) |
use this
| Code: | | memrec2 = memrec1.Description |
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bknight2602
Grandmaster Cheater
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Joined: 08 Oct 2012
Posts: 577
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| Posted: Sat Apr 04, 2015 1:58 pm Post subject: |
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| mgr.inz.Player wrote: | | Quote: | | Secondly the table has some addresses from a previous session, that aren't in the current session and the for loop j never finished as there was a "Access error". |
Don't iterate on IDs. Iterate on indexes.
Secondly, try changing your code to something more readable.
Example:
instead of this
| Code: | | memrec2 = memoryrecord_getDescription(memrec1) |
use this
| Code: | | memrec2 = memrec1.Description |
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Old dogs need a lot of time/practice to learn new steps, besides I don't know all of those short cuts let alone all the "old" language and steps.
I'm not understanding the iterate on index, you mean like this?
addresslist_getMemoryRecord(addresslist, index)
| Zanzer wrote: | Do your memoryrecord_getDescription() or addresslist_getMemoryRecordByID() functions return multiple values?
Error handling: http://www.lua.org/pil/8.4.html |
No multiple of values up until error message. Thanks for the link, I need to study usage on that one for a bit.
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mgr.inz.Player
I post too much
Reputation: 218
Joined: 07 Nov 2008
Posts: 4438
Location: W kraju nad Wisla. UTC+01:00
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| Posted: Sat Apr 04, 2015 2:47 pm Post subject: |
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The first piece can be written like this ("new" language + cleaning + index instead of ID):
| Code: | for j=0, AL.getCount()-1 do
local mr = AL[j]
print("Record number " .. j+1 .." has a description of " .. mr.Description)
if mr.Description ~= "Gold" then
mr.Address = string.format('%x', ('0x'..mr.Address) + correction)
end
end |
the second
| Code: | for j=0, AL.getCount()-1 do
local mr = AL[j]
local desc = mr.Description
print("Record number " .. j+1 .." has a description of " .. desc)
if desc ~= "Gold" then
mr.Address = string.format('%x', ('0x'..mr.Address) + correction)
end
end |
After cleaning, we see that both are doing the same thing.
EDIT:
ahhh. I forgot that mr.Address returns string and
memoryrecord_getAddress(mr) returns a number
I applied necessary changes.
Because you iterated on IDs.
As an example: there ate memrec with IDs: 0,1,2,3,4,7,8,9
AL.getCount() will give you 8. Using "for x=0, AL.getCount()-1 do" won't reach memrec with ID9
Also, you will get other errors, because there's no memrec with ID=5 and ID=6
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