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Zaladine
Expert Cheater
 Reputation: 3
Joined: 14 Oct 2012
Posts: 129
Location: Djokdja, Indonesia
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 Posted: Sat Feb 01, 2014 9:01 pm Post subject: Q: Creating a table address based on other address. |
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I'm making a table for this specific game, which UI uses a non-digit-gauge
(a pointing arrow) for its wind bearing. I've managed to obtain this bearing
address, and turns out that it is in Radian system.
However, since some popular walk-throughs for certain calculation involving
this wind bearing is in degree, i need (want) to create a new table address
which reads my previous Radian address, convert it, and shown in degree.
According to Wiki, the formula is:
This new table address needs to be updated in real-time (once every second
is actually acceptable), as the aforementioned address is.
So, please teach me how to do this (preferably in a step-by-step manner for
beginners). Thank you very much in advance for kind replies...
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Dark Byte
Site Admin
 Reputation: 471
Joined: 09 May 2003
Posts: 25819
Location: The netherlands
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| Posted: Sat Feb 01, 2014 9:30 pm Post subject: |
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Is the angle in radians stored as a float ?
If so, try this custom type (Not suitable for scanning, but usable for working with)
Just execute this script and you'll have a RadToDegree type
| Code: |
function RadToDegree_bytestovalue(b1,b2,b3,b4)
--Add extra byte parameters as required
bt={}
bt[1]=b1
bt[2]=b2
bt[3]=b3
bt[4]=b4
return (byteTableToFloat(bt)*180) / math.pi
end
function RadToDegree_valuetobytes(i)
--return the bytes to write (usually only used when you change the value)
bt=floatToByteTable((i * math.pi) / 180)
return bt[1],bt[2],bt[3],bt[4]
end
registerCustomTypeLua("RadToDegree", 4, RadToDegree_bytestovalue, RadToDegree_valuetobytes)
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One downside is that it currently only handles full integers
(You can also do an auto assembler script for this which CAN add support for floating points. But I don't feel like delving too deep into the floating point instruction set)
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Zaladine
Expert Cheater
Reputation: 3
Joined: 14 Oct 2012
Posts: 129
Location: Djokdja, Indonesia
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mgr.inz.Player
I post too much
 Reputation: 222
Joined: 07 Nov 2008
Posts: 4438
Location: W kraju nad Wisla. UTC+01:00
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| Posted: Wed Feb 05, 2014 1:00 pm Post subject: RadToDegree (Custom Type AA) |
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Custom Type Lua: Not suitable for scanning, but usable for working with.
Custom Type AA: Suitable for scanning and working with.
If you need for fast scanning (searching) - use "Custom Type AA" below:
| Code: |
alloc(ConvertRoutine,128)
alloc(ConvertBackRoutine,128)
alloc(TypeName,64)
alloc(ByteSize,4)
alloc(UsesFloat,1)
TypeName:
db 'RadToDeg (single-fp)',0
// single-precision floating-point value
ByteSize:
dd 4
UsesFloat:
db 1
ConvertRoutine:
[64-bit]
cvtss2sd xmm0,dword ptr[rcx]
[/64-bit]
[32-bit]
mov eax,[esp+04]
cvtss2sd xmm0,dword ptr[eax]
[/32-bit]
mov eax,#180
cvtsi2sd xmm1,eax
mulsd xmm0,xmm1
fldpi
sub esp,8
db DD 1C 24 // fstp qword ptr [esp], fstp qword ptr [rsp]
divsd xmm0,[esp]
add esp,8
cvtsd2ss xmm0,xmm0
movd eax,xmm0
[64-bit]
ret
[/64-bit]
[32-bit]
ret 0004
[/32-bit]
ConvertBackRoutine:
[64-bit]
movd xmm0,ecx
[/64-bit]
[32-bit]
push ecx
mov ecx,[esp+08]
movd xmm0,ecx
[/32-bit]
cvtss2sd xmm0,xmm0
mov ecx,#180
cvtsi2sd xmm1,ecx
divsd xmm0,xmm1
fldpi
sub esp,8
db DD 1C 24 // fstp qword ptr [esp], fstp qword ptr [rsp]
mulsd xmm0,[esp]
add esp,8
cvtsd2ss xmm0,xmm0
[64-bit]
movd [rdx],xmm0
ret
[/64-bit]
[32-bit]
mov ecx,[esp+0C]
movd [ecx],xmm0
pop ecx
ret 0008
[/32-bit]
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Choose define new custom type AA, remove all auto-generated code, and paste the above code.
@Dark Byte, because of bug (reported here id=309):
I have to use "db DD 1C 24"
keywords (for easy "google searching"):
radians degrees pi Custom Type AA xmm0 xmm1 SSE
| Description: |
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| Filesize: |
8.7 KB |
| Viewed: |
4158 Time(s) |
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