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Lau Decreaseing value

 
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AntonVit
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PostPosted: Tue Aug 11, 2015 8:25 am    Post subject: Lau Decreaseing value Reply with quote
Hi, i try to decrease float value with lia script but cant
I want while key pressed value will decrease

this script i tryed
**********************************************
al = getAddressList()
FORWARDLEFTUP = al.getMemoryRecordByDescription("FORWARDLEFTUP")
function checkKeys(timer)

if (isKeyPressed(VK_NUMPAD1) and isKeyPressed(VK_SUBTRACT)) then
A = FORWARDLEFTUP.Value
B = "0.003"
C = A-B
FORWARDLEFTUP.Value=C
end
end
t=createTimer(nil)
timer_setInterval(t, 100)
timer_onTimer(t, checkKeys)
timer_setEnabled(t, true)
*********************************************************

Value alaways decrease to aboute zero but under zero (for example -1 or - 1.1) cant. If i try increase it work fine. In firstly FORWARDLEFTUP.Value has value aboue 0.5.
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Redouane
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Location: Algeria
PostPosted: Tue Aug 11, 2015 12:48 pm    Post subject: Re: Lua Decreaseing value Reply with quote
I think this is a bug,because it works just fine with variables declared with Lua,here is a way to reproduce it:
FORWARDLEFTUP is a memory record.
Code:

x = FORWARDLEFTUP.Value; -- equals (-0.001)
FORWARDLEFTUP.Value = FORWARDLEFTUP.Value - 0.003
x = x - 0.003;
FORWARDLEFTUP.Value = FORWARDLEFTUP.Value - 0.003
x = x - 0.003;
FORWARDLEFTUP.Value = FORWARDLEFTUP.Value - 0.003
x = x - 0.003;
FORWARDLEFTUP.Value = FORWARDLEFTUP.Value - 0.003
x = x - 0.003;
FORWARDLEFTUP.Value = FORWARDLEFTUP.Value - 0.003
x = x - 0.003;
return x == FORWARDLEFTUP.Value

@DarkByte
the code prints false to the console !

A few tips to improve your code:
Code:

FORWARDLEFTUP = getAddressList().getMemoryRecordByDescription("FORWARDLEFTUP")
local hotkey = createHotkey(function ()
            -- No need for A,B and C
            FORWARDLEFTUP.Value = FORWARDLEFTUP.Value - 0.003;
            end,VK_1,VK_SUBTRACT);
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Zanzer
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PostPosted: Tue Aug 11, 2015 5:33 pm    Post subject: Reply with quote
Sounds like a rounding issue when converting between floats and strings. Use:
Code:
writeFloat(FORWARDLEFTUP.CurrentAddress, readFloat(FORWARDLEFTUP.CurrentAddress) - 0.003)
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AntonVit
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PostPosted: Wed Aug 12, 2015 3:00 am    Post subject: Reply with quote
Thanks
Tryed
*******************************************
Code:
al = getAddressList()
FORWARDLEFTUP = al.getMemoryRecordByDescription("FORWARDLEFTUP")
function checkKeys(timer)
if (isKeyPressed(VK_NUMPAD1) and isKeyPressed(VK_SUBTRACT)) then

x = FORWARDLEFTUP.Value; -- equals (-0.001)
FORWARDLEFTUP.Value = FORWARDLEFTUP.Value - 0.003
x = x - 0.003;
FORWARDLEFTUP.Value = FORWARDLEFTUP.Value - 0.003
x = x - 0.003;
FORWARDLEFTUP.Value = FORWARDLEFTUP.Value - 0.003
x = x - 0.003;
FORWARDLEFTUP.Value = FORWARDLEFTUP.Value - 0.003
x = x - 0.003;
FORWARDLEFTUP.Value = FORWARDLEFTUP.Value - 0.003
x = x - 0.003;
return x == FORWARDLEFTUP.Value
end
end
t=createTimer(nil)
timer_setInterval(t, 100)
timer_onTimer(t, checkKeys)
timer_setEnabled(t, true)


but value decrease again to aboute zero and not under


and tryed
Code:
al = getAddressList()
FORWARDLEFTUP = al.getMemoryRecordByDescription("FORWARDLEFTUP")
function checkKeys(timer)
if (isKeyPressed(VK_NUMPAD1) and isKeyPressed(VK_SUBTRACT)) then

writeFloat("53F6BF44", readFloat("53F6BF44") - 0.003)
end
end
t=createTimer(nil)
timer_setInterval(t, 100)
timer_onTimer(t, checkKeys)
timer_setEnabled(t, true)


work fine

Thanks You all for help. Now it work
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Dark Byte
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PostPosted: Wed Aug 12, 2015 3:20 am    Post subject: Reply with quote
It's fixed in the next lua version that comes with ce

also, this script is the same:
Code:

v="-0.001"
x=v
v=tostring(v-0.003)
x=x-0.003
v=tostring(v-0.003)
x=x-0.003
v=tostring(v-0.003)
x=x-0.003
v=tostring(v-0.003)
x=x-0.003

print(x)
print(v)

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AntonVit
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Posts: 73
PostPosted: Thu Aug 20, 2015 4:25 am    Post subject: Reply with quote
Dark Byte wrote:
It's fixed in the next lua version that comes with ce

also, this script is the same:
Code:

v="-0.001"
x=v
v=tostring(v-0.003)
x=x-0.003
v=tostring(v-0.003)
x=x-0.003
v=tostring(v-0.003)
x=x-0.003
v=tostring(v-0.003)
x=x-0.003

print(x)
print(v)


In main page of site link (button) for new version of CE (there is 6.4) Or i need wait some for new CE (6.5) in which new fixed lua?
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Dark Byte
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PostPosted: Thu Aug 20, 2015 4:35 am    Post subject: Reply with quote
Yes, wait for 6.5
For now just work around it
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mgr.inz.Player
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PostPosted: Fri Aug 21, 2015 1:22 pm    Post subject: Reply with quote
In Lua5.1 and before, tonumber function and automatic string conversion (from string to number) has a bug.
It doesn't like "0" (zero) between "-" (minus) and "." (decimal separator).

This bug was reported here:
http://cheatengine.org/mantis/view.php?id=328




We can fix tonumber function with this:
Code:
if original_tonumber==nil then
  original_tonumber=tonumber
end

function tonumber(value)
  value = value:gsub( "%-0+%." , "-." ):gsub("%-%-","")
  return original_tonumber(value)
end

first gsub replaces all "-0." with "-." (also any amount of zeros between minus and decimal separator)
second gsub replaces all "--" into empty string

From now on, it will recognize "-0.234" and "-000.234" and "---0.234" and ..... (you get the idea)
as number -0.234




Now just use corrected tonumber function (automatic conversion is still broken):
Code:
v="-0.001"
v=tostring(tonumber(v)-0.003)
v=tostring(tonumber(v)-0.003)
v=tostring(tonumber(v)-0.003)
v=tostring(tonumber(v)-0.003)





So, for you it will be:
Code:
FORWARDLEFTUP.Value = tostring(tonumber(FORWARDLEFTUP.Value) - 0.003)

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