floating_point_AA_script.CEA

[ENABLE]

aobscanmodule(INJECT,GTA5.exe,B3 F3 0F 11 83 28 03 00 00) // should be unique
alloc(newmem,$2000,"GTA5.exe"+779E52)
alloc(mul,4)
alloc(limit,4)
alloc(fastbit,4)
registersymbol(fastbit)
label(code)
label(return)


newmem:
 cmp [fastbit],1
 jne code
  // back up registers
  sub rsp,20
  movups [rsp],xmm0
  movups [rsp+10],xmm1

  // magnitude of 2d vec
  movss xmm0,[rbx+320]
  movss xmm1,[rbx+324]
  mulss xmm0,xmm0
  mulss xmm1,xmm1
  addss xmm0,xmm1
  sqrtss xmm0,xmm0

  // compare limit
  movss xmm1,[limit]
  ucomiss xmm0,xmm1
  jae code

// speeder:
  movss xmm1,[mul]

  movss xmm0,[rbx+320]
  mulss xmm0,xmm1
  movss [rbx+320],xmm0

  movss xmm0,[rbx+324]
  mulss xmm0,xmm1
  movss [rbx+324],xmm0

code:
  // restore registers
  movups xmm0,[rsp]
  movups xmm1,[rsp+10]
  add rsp,20

  // original code
  mov [rbxptr],rbx
  movss [rbx+328],xmm0
  jmp return

mul:
dd (float)2

limit:
dd (float)5



INJECT+01:
  jmp newmem
  nop
  nop
  nop
return:
registersymbol(INJECT)

[DISABLE]

INJECT+01:
  db F3 0F 11 83 28 03 00 00

unregistersymbol(INJECT)
dealloc(newmem)
dealloc(mul)
dealloc(limit)
dealloc(fastbit)
unregistersymbol(fastbit)