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Renard10177
Newbie cheater
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Joined: 19 Jun 2013
Posts: 12
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 Posted: Tue Oct 08, 2013 9:13 pm Post subject: Conditional Nop |
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I wanted to make a code that nop's a certain address if the value is greater than or equal to 100, problem is, it nop's it no matter what
| Code: | [ENABLE]
//code from here to '[DISABLE]' will be used to enable the cheat
alloc(newmem,2048)
label(returnhere)
label(originalcode)
label(exit)
label(nopit)
newmem: //this is allocated memory, you have read,write,execute access
//place your code here
cmp [10353754],0064
jge nopit
jmp originalcode
nopit:
nop
nop
nop
nop
nop
nop
jmp exit
originalcode:
fstp dword ptr [eax+00000160]
exit:
jmp returnhere
"hl.dll"+184D5:
jmp newmem
nop
returnhere:
[DISABLE]
//code from here till the end of the code will be used to disable the cheat
dealloc(newmem)
"hl.dll"+184D5:
fstp dword ptr [eax+00000160]
//Alt: db D9 98 60 01 00 00 |
I think the problem is that it's checking the 4-byte value of the address, but I need it to check the float value, how do i do this? (the code is for half-life: blue shift, btw) |
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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: Thu Oct 10, 2013 11:41 am Post subject: |
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original code is:
fstp dword ptr [eax+00000160]
You can not just nop FPU commands, commands that changes stack state.
So, all FSTP, FISTP, FDIVP, FDIVRP, FMULP, FADDP, etc. can not be just nopped.
Another thing, this address: 10353754, will be only valid until you shutdown HL. After you launch game again, HP will be at different address.
Lastly. Half-Life game stores HP as single floating-point value (single, float). For those you have to use:
- FPU compare
- or SSE compare
- or MMX compare
Or, if values are always bigger or equal to zero, you can use this:
cmp [address],(float)100.0
or
cmp [address],42C80000
(0x42C80000 == 100.0 float)
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