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Question about MemScan()

Cheat Engine Forum Index -> Cheat Engine Lua Scripting

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Corroder
Grandmaster Cheater Supreme

Reputation: 75

Joined: 10 Apr 2015
Posts: 1667

Posted: Sun Feb 05, 2017 4:22 am Post subject: Question about MemScan()

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Hi there,

Code:

MemScan Class (Inheritance: Object)

methods
firstScan(scanoption, vartype, roundingtype, input1, input2 ,startAddress ,stopAddress ,protectionflags ,alignmenttype ,"alignmentparam" ,isHexadecimalInput ,
isNotABinaryString, isunicodescan, iscasesensitive);

Questions for firstScan :
1. is input2 required only if scanoption = soValueBetween ?
2. if scanoption = soValueBetween, input1 = 1000, input2 =1100, interval = +10, where is put interval value in methods structure ?
is this right ? --> firstScan(scanoption, vartype, roundingtype, input1, input2 , interval, .. )
3. Is there any other references for firstScan( .. ) summaries, except in main.lua ?.
I mean something like this, example :

scanoption : soExactValue
- Accept both string and number
- Variable Types required = All Valid Types
- Rounding Types required = on number value
- etc....

soUnknownValue
- etc
- etc..

vartype : vtByte
- use when....
- etc...

and so on....

Thanks

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Dark Byte
Site Admin

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Posts: 25288
Location: The netherlands

Posted: Sun Feb 05, 2017 5:36 am Post subject:

1 input2 is always required, but can be an empty string 2 i have no clue where you get interval from (how do you do it in the ce gui?) 3 just main.lua and the ce sourcecode (and the ce gui) _________________ Do not ask me about online cheats. I don't know any and wont help finding them. Like my help? Join me on Patreon so i can keep helping

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Corroder
Grandmaster Cheater Supreme

Reputation: 75

Joined: 10 Apr 2015
Posts: 1667

Posted: Sun Feb 05, 2017 6:53 am Post subject:

Reply with quote

Thanks DB...

1. input2 is always required, but can be an empty string

so if no value to search for input2, then i can use :

Code:

firstScan(scanoption, vartype, roundingtype, input1, "" ,startAddress .. )
-- or
firstScan(scanoption, vartype, roundingtype, input1, nil ,startAddress .. )

2. I've read again topic from : http://forum.cheatengine.org/viewtopic.php?t=602311

fcqgju14156 :

Quote:

the script was looking for multiple values.
From 2.309374809 to 2.967968702 (intervals 0.0625).
For example 2.309374809, 2.371874809, 2.434374809, 2.496874809 ..... and so on.
It is necessary that the script was looking for and changed several values at once

Zanzer :

Quote:

To search for all values between 2.309374809 and 2.967968702 use:

Code:

scan.firstScan(soExactValue,vtSingle,rtRounded,"2.309374809","2.967968702",0,0xffffffffffffffff,"+W-C",fsmNotAligned,nil,false,false,false,false);

Just so you know, 2.967968702 is not one of the values when adding 0.0625...
So decide if you want to stop at 2.934374809 or 2.996874809.

Code:

local start = 2.309374809
local interval = 0.0625
local finish = 2.934374809
local values = {}
for i = start, finish, interval do
values[i] = true
end

You can then check if the found value is equal to one of those intervals.
I'm not sure how well this approach will work due to possible rounding differences.
You could do a similar approach and add/subtract 0.0001 to check against a tiny range.

Code:

for i=0,FoundList.Count-1 do
if values[FoundList.Value[i]] then
writeFloat(FoundList.Address[i],2.371874809);
end
end

Sorry for question, the interval value used is NOT in fisrtScan method but use when manipulating foundlist search result which stored on a defined table.

3. Okay, I will try to make summary for firstScan method / MemScan Class referenced in main.lua and also search for some examples in the forum and other sites if any.

Regards

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