...
call    _ZNK12CTFGameRules16GetPayloadToPushEi
mov     eax, [ebp+var_38]
sub     esp, 4   ; doesn't relate to our further steps
mov     ecx, g_pEntityList
cmp     eax, 0FFFFFFFFh
jz      short loc_D3FA4A   ; (1) we jump off if inthandle is -1
mov     edx, eax
shr     eax, 0Ch
and     edx, 0FFFh
shl     edx, 4
add     edx, ecx
cmp     [edx+8], eax
jz      loc_D3FB20   ; (2) we must jump here in order to proceed
                     ; i.e. eax should equal [edx+8] at this point

...
; loc_D3FB20:
mov     eax, [edx+4]
test    eax, eax
jz      loc_D3FA4A   ; (3) we jump off if [edx+4] is NULL
mov     [esp], eax
call    _ZN17CTeamTrainWatcher14GetTrainEntityEv   ; we made it!