[Deji]

Changing Memory Without CLEO

There is indeed a way to read/write memory without the use of the CLEO read_memory or write_memory opcodes.

However, not all memory supports this method.

Step 1

Get any memory address. Let's use the cash address: 0xB7CE50

Step 2

Using Windows calculator (or within the code itself), take 0xA49960 from the address. This is the address of the beginning of the SCM block.

CODE

0xB7CE50 - 0xA49960 = 0x1334F0

For gta_sa.exe version 1.1, use 0xA4BFE0.

Step 3

Divide the result by 4 (variable size).

CODE

0x1334F0 / 4 = 0x4CD3C

So now 0x4CD3C is the address we use for controlling the players cash. However, this value needs to be turned into a decimal, for one:

Ctrl+H in Sanny Builder

CODE

314684

And turn it to a negative.

CODE

-314684

Step 4

Store -314684 into a variable and then use it in an array like the one below.

In the example, the players cash is set to $1337

SANNY

0@ = -314684
&0(0@,1i) = 1337

To increase it by $1000...

SANNY

0@ = -314684
000A: &0(0@,1i) += 1000

Simple. Now you can do some editing of memoy within a main.scm without CLEO. Dunno why you'd want to, these days.. but there are some advanced techniques this can go towards using.

[glairhemma]

Where should I place these codes?

[Deji]

Anywhere. Adjust the variables as needed. You could just make SCM functions which sort out all the tricky bits for you, e.g:

:my_code
CALL @WriteMemory 0xB7CE50 99999999
TERMINATE_THIS_CUSTOM_SCRIPT

:GetMemoryLocalPtr{\_[ptr]__(dwAddress)_}
0@ -= 0xA49960
0@ /= -4  // turns negative and divides by 4
RET 1 0@

:WriteMemory{\_[void]__(dwAddress,_dwValue)_}
CALL @GetMemoryLocalPtr 1 0@ 0@
&0(0@,1i) = 1@
RET 0

:ReadMemory{\_[dwValue]__(dwAddress)_}
CALL @GetMemoryLocalPtr 1 0@ 0@
RET 1 &0(0@,1i)

This is written in "SCR for SB" style. Remember that this method of accessing memory only works for DWORD's (4 byte integers).