[powernoob]

Hello,

I would like to disable the +Z velocity limit when a player is on foot, the limit appear to be 0.25.

Anyone know where in the IDB can I find the limitation code?

Thanks!


Edit: OK I think I have found the limitation code:

005E91CE CPed__processControl+4FE

But I have no idea how to disable it, I tried to write a NOP to this adress but the game crashed when I tried to set player velocity xD


Edit Ok I have found how to modify the 0.25 limit, but not how to disable this check:

In Cheat Engine, set manual address to 5E91CE, then set type to array of bytes, lenght 7, you should see C7 46 4C 00 00 80 3E, this is the opcode and parameters for mov [esi+4c],3e800000, where 3e800000 is 0.25 in hexadecimal.

I tried to change this 0.25 limit to 100 (42C80000, so just needed to change the last 2 bytes to C8 42), unfortunately when I tried to set the player velocity +Z to like 10, it immediately changed the velocity to 100 (or very high value) and there was no more gravity until I reach Z coordinate 99999.999, at which point I fall normally with gravity.


Edit again: sorry I am stupid xD, the address of the 0.25 limit is at 862E38, (type is double), I found it by looking a little above in the IDB, at 005E91B4

Anyway I think the other value isn't useless either...

Final edit: better to always set both 862E38 and 5E91D1 to the same values, or what I described earlier will happen (if 862E38's value is lower than 5E91D1's value)

Oh and write 7 NOP at 5E91CE to completely disable the limit! Hey I start to understand how it works

This post has been edited by powernoob: Jan 29 2013, 04:11 AM

[Deji]

Don't change 0x862E38, it should be read-only data. Instead you need to rewrite any pointers using it that relate to the velocity limit. I've not got the IDB open so I can't comment on the others right now.

[Silent]

You may aswell NOP 2 bytes at 0x5E91B2 to remove the limit from all peds, including the player.

[ThirteenAG]

What exactly this limit do?

[LINK/2012]

What exactly this limit do?

I think it is the maximum speed the player can fall, if the player is falling at the speed of 0.25, the speed won't increase anymore.

@Down
Now I don't understand too


This post has been edited by LINK2012: Jan 29 2013, 05:20 PM

[powernoob]

No, it's the limit for the maximum RISE speed (+Z)

Don't change 0x862E38, it should be read-only data. Instead you need to rewrite any pointers using it that relate to the velocity limit.

Ok you are right this is used for others things, better not change this value

This post has been edited by powernoob: Jan 29 2013, 05:07 PM

[Opcode.eXe]

Got this, works fine:

{$CLEO .cs}
THREAD "THREAD_BY_OPCODEXE"
0662: NOP "www.youtube.com/OpcodeXe"
0662: NOP "http://www.gtagarage.com/mods/show.php?id=23402" // thx to Kryptonian



:NOP
wait 0
if
0ADC: test_cheat "limit"
jf @NOP
0A8C: write_memory 0x5E91CE size 1 value 0x90 virtual_protect 1
0A8C: write_memory 0x5E91CF size 1 value 0x90 virtual_protect 1
0A8C: write_memory 0x5E91D0 size 1 value 0x90 virtual_protect 1
0A8C: write_memory 0x5E91D1 size 1 value 0x90 virtual_protect 1
0A8C: write_memory 0x5E91D2 size 1 value 0x90 virtual_protect 1
0A8C: write_memory 0x5E91D3 size 1 value 0x90 virtual_protect 1
0A8C: write_memory 0x5E91D4 size 1 value 0x90 virtual_protect 1
0ACD: show_text_highpriority "NOPPED" time 1200

:RESTORE
wait 0
if
0ADC: test_cheat "limit"
jf @RESTORE
0A8C: write_memory 0x5E91CE size 1 value 0xC7 virtual_protect 1
0A8C: write_memory 0x5E91CF size 1 value 0x46 virtual_protect 1
0A8C: write_memory 0x5E91D0 size 1 value 0x4C virtual_protect 1
0A8C: write_memory 0x5E91D1 size 1 value 0x0 virtual_protect 1
0A8C: write_memory 0x5E91D2 size 1 value 0x0 virtual_protect 1
0A8C: write_memory 0x5E91D3 size 1 value 0x80 virtual_protect 1
0A8C: write_memory 0x5E91D4 size 1 value 0x3E virtual_protect 1
0ACD: show_text_highpriority "RESTORED" time 1200
jump @NOP

[Sidewalk Surfer]

Is this so you can make peds not stay stuck to the floor? If so, I am looking for the same thing.

[Opcode.eXe]

Is this so you can make peds not stay stuck to the floor? If so, I am looking for the same thing.

So you want to set players velocity while hes on the ground?
You have to simulate that you're in air:

0A96: 0@ = actor $PLAYER_ACTOR struct
0A8E: 1@ = 0@ + 0x46C // int
0A8C: write_memory 1@ size 1 value 0 virtual_protect 0

Use this in a loop and then youre able to set velocity like in this video:
http://www.youtube.com/watch?v=n_6Uhki6T8M