Miscellany

.text:004174B3 sub_4174B3      proc near               ; CODE XREF: sub_41E2F9+35p
.text:004174B3                                         ; sub_41E3E4+7Ap ...
.text:004174B3
.text:004174B3 arg_0           = dword ptr  8
.text:004174B3 arg_4           = dword ptr  0Ch
.text:004174B3
.text:004174B3                 push    esi
.text:004174B4                 mov     esi, [esp+arg_0]
.text:004174B8                 sub     esi, ecx
.text:004174BA                 mov     ecx, [esp+arg_4]
.text:004174BE                 sub     ecx, edx

;snip

.text:00417514                 pop     esi
.text:00417515                 retn    8
.text:00417515 sub_4174B3      endp

;Here's the call.
.text:0041E310                 push    dword_4B8CC8
.text:0041E316                 imul    eax, 54D8h           ;size of player struct
.text:0041E31C                 push    dword_4B8CC4
.text:0041E322                 mov     edx, dword_686484[eax]
.text:0041E328                 mov     ecx, dword_686480[eax]
.text:0041E32E                 call    sub_4174B3

;I don't know why this doesn't work.

typedef int (__stdcall* Teleport_t)(int i1, int i2);
Teleport_t pTeleport = (Teleport_t)0x4174B3;
Teleport_t pTramp_Teleport = NULL;
pTramp_Teleport = (Teleport_t)DetourFunction((PBYTE)pTeleport, (PBYTE)det_Teleport);