Cheat Engine

[IceTeaMan]

I know of an easy way to find all the Weapons in any zone/chapter of Fear 3
I know how to set Infinite Ammo & No Reload on any of these weapons with out fear of crashing the game.

What I need help with, is getting Cheat Engine to create a Trainer to do this instead of manually changing the values.

In a nut shell, I search fear 3 process for Text string Reload_State
I then look at each address -74h for a Text string (see list below)
Assault_Rifle
CAS
Handgun
SMG
Sniper
UZI
RocketLauncher
Flechette

if the address -74h has one of these strings at -74h it's one of the 2 weapons equiped or one that can be picked up in this zone.
if -74h does have one of these strings skip that address

Reload_State = address found
Reload_State - 74h = weapon type
Reload_State -12Ch = spare ammo low ammo trigger
Reload_State -130h = loaded low ammo warning trigger
Reload_State -134h = 01h = Reload 00h = no reload
Reload_State -138h = spare ammo (max = max clip ammo times max clips)
Reload_State -140h = max clips you can carry
Reload_State -144h = loaded ammo
Reload_State -150h = max ammo per clip

Once I know that -74h is a weapon I can edit -134h to 00h to give no reload for that weapon

I never need to change any ammo value risking a game crash
game crashes happen when values listed above don't match up q:

Is there a way to write a LUA script to search for Reload_State
then search -74 for weapons type & if true
edit -134h to 00
& do this with each address found?

if so I can then create a trainer that will enable Infinite Ammo with Infinite Symbol displayed on screen inplace of spare ammo value q:
Along with setting all Weapons to No Reload or setting weapons by type to these values

Thanks for any help given

[Dark Byte]

easiest method: Convert the text "Reload_State" to an array of byte and use lua's AOBScan function

then traverse the list and for each address use readString(address-offset, charcount) and check if the string is what it should be

if not, try another result of the aobscan...

alternatively, use the MemScan and FoundList classes for full blown CE memory scanning, but I really suggest you try the aobscan method first

Currently don't have much time to write this whole script for you, but look up these functions and experiment, and ask specific questions. Or someone else can implement this

[atom0s]

Here's a function I wrote to convert a string to its bytes:

[IceTeaMan]

The script works great & will return the same 34 address that I get with a text search in cheat engine for Reload_State
now I just have to work out the rest of it & I'm good to go

Thanks

[IceTeaMan]

I might be in over my head with this, so I'll give the info needed to set Infinite Ammo with Infinite Symbol displayed on the screen in hopes someone can use it.
From Reload_State -158h you should see the byte 69h or 68h (sometimes on a handgun it will be 2Fh) change that byte to 2Ah to enable the ingame Infinite Ammo & display the Infinite Symbol in place of the spare ammo value.
the game will not allow you to set this value back to the normal value!

Also you might want to try changing Reload_State -14Ch the byte is normally set to 01h changing that byte to 00h will cause that weapons loaded ammo to drop to 0 & reload an empty clip, each time the weapon is fired after that it will reload an empty clip, doesn't matter how much spare ammo the weapon has q:
Always a good joke to play on a frirend/roommate
setting that byte to 02h will force a double reload giving the weapon twice the normal ammo. setting to 03h or higher has the same effect as 02h only double reload.

[IceTeaMan]

I don't really need to convert the String to bytes, so this will work

[Dark Byte]

tip:
you can also do:
print ( readString( "0509FDF0-74", 4 ) )

and also:
readString( addr.."-74", 4 )

but if you really want it as a number:
addr= tonumber( "0x" .. addr );

[IceTeaMan]

thanks
print ( readString( addr.."-74", 4 ) );
works fine & keeps things simple

[IceTeaMan]

How do I write a byte to the process memory with a lua script?

writeByte( addr.."-158", "2A" )

gives an error if add to the script above

[Dark Byte]

try
writeBytes(addr.."-158", 0x2a)

[atom0s]

Just a heads up, rather then reading multiple times, you should read once and use a local variable to do your if checks.

Like:

[IceTeaMan]

thanks that worked
knew it had to be something simple that I was over looking

This Lua script will set all weapons* to Inifinite Ammo & No Reload for
Retail steam single player Fear 3
Thanks to Dark Byte & Wiccaan for there help in writing this Script

[IceTeaMan]

I've been playing around with this script to find the addresses for the Frag, Flash, & Zap Grenades (not fully tested yet)
It should set the grenades to the max you can carry & enable unlimited grenades
you might have to cycle though the grenades once to update the screen
The first 3 addresses will be for the ones equiped
the rest will be the addresses of grenades that can be picked up in the zone

[IceTeaMan]

this script finds the second address of two address for the Phase Beam

[IceTeaMan]

still working on the laser weapon, Can now find the addresses for both Phase Beams on the Bridge where the Heavy Mech is.
The one that drops on top of the 18 wheeler uses a 64 bit floating point for 1.0
& the one droped near the Heavy Mech's control room uses a 32 bit floating point for 1.0
This script will give the addresses for both Phase Beams & change the 32 bit ones charge state from 1.0 to 1000.0 with no ill effects on the game even when changing zones