Cheat Engine

[jeck00119]

Hi! I'm trying to save and load coordinates, but I can't do this to work!
(I'm a little noob )
Thanks in advance for your help!

[ENABLE]
alloc(newmem,2048)
label(returnhere)
label(originalcode)
label(exit)
label(z_coord)
label(x_coord)
label(y_coord)
label(save_coord)
label(load_coord)
label(s_enable)
label(l_enable)
registersymbol(s_enable)
registersymbol(l_enable)


"gta3.exe"+9FA27:
jmp newmem
nop
returnhere:


newmem:
cmp [s_enable],1
je save_coord
cmp [l_enable],1
je load_coord
jmp originalcode


save_coord:
mov [s_enable],0
push edx
mov edx,[ebp+38]
mov [x_coord],edx
mov edx,[ebp+34]
mov [z_coord],edx
mov edx,[ebp+3C]
mov [y_coord],edx
pop edx
jmp originalcode

load_coord:
mov [l_enable],0
cmp [z_coord],0
je originalcode
push edx
mov edx,[x_coord]
mov [ebp+38],edx
mov edx,[z_coord]
mov [ebp+34],edx
mov edx,[y_coord]
mov [ebp+3C],edx
pop edx


originalcode:
fstp dword ptr [ebp+34]
fld dword ptr [ebp+38]

exit:
jmp returnhere

x_coord:
dd 0
z_coord:
dd 0
y_coord:
dd 0
s_enable:
dd 0
l_enable:
dd 0

[DISABLE]
dealloc(newmem)
"gta3.exe"+9FA27:
fstp dword ptr [ebp+34]
fld dword ptr [ebp+38]
unregistersymbol(s_enable)
unregistersymbol(l_enable)

[++METHOS]

Did you add the custom addresses to your table (i.e. the s_enable and l_enable) and assign hotkeys to them to set their values to 1?

[jeck00119]

[++METHOS]

Then check to make sure that you are using the correct instruction for your injection point (and) that no other addresses are being accessed by that instruction (it's likely that you will have to filter them out so that only your player coordinates are affected).

[jeck00119]

[++METHOS]

Right-click on the first instruction: fstp dword ptr [ebp+34] and check to see what addresses it accesses.

In your cheat table, when you press your hotkey to save your coordinates, it should flicker from 1 and then back to 0 really fast. Does it do that? Additionally, when you press your hotkey to load your coordinates, does it flicker from 1 to 0, or just stay as 1?

[jeck00119]

Sorry for the delay:(!!The instruction is accessed only by the player and the save/load hotkeys flick from 1 and then back to 0 fast.I don't know what to do.

[++METHOS]

There may be a better injection point. Try to inject using an instruction that, if NOP'd, does not allow your character to move. Doing so, may require you to incorporate a filter, but you can simply use the current instruction for that.

[jeck00119]

Thanks a lot for your help,Sir! I will try.