I'm not sure if this base is stable, so i post a CE Table File with more...
Base: S4Client.exe+00810958 0x44 0x5CC 0x368 0x0
Offset: 0x684
Y-Position
Offset: 0x688
Z-Position
Offset: 0x68C
X-Position
Offset: 0x67C
Z-axis from the Char to the Map
Smaller means you walking over the Map
Bigger means you walking under the Map
Offset: 0x690
Y-Collision
Offset: 0x694
Z-Collision
Offset: 0x698
X-Collision
If Y is not the same as X and
Y or X multiplied by 1.6 is not equals Z then
you can walk through Objects or Walls
They are all float variables
Edit: the Pointer ist realy not stable
I search in the next time another one...