[RyDeR`]

The part where you get the positions and save the positions in with PVars.

pawn Код:

new
    Float: pPos[3]
;
GetPlayerPos(playerid, pPos[0], pPos[1], pPos[2]);

SetPVarFloat(playerid, "posX", pPos[0]);
SetPVarFloat(playerid, "posY", pPos[1]);
SetPVarFloat(playerid, "posZ", pPos[2]);

The part where you check if it's changed.

pawn Код:

new
    Float: pPos[3]
;
GetPlayerPos(playerid, pPos[0], pPos[1], pPos[2]);

if(pPos[0] != GetPVarFloat(playerid, "posX") || pPos[1] != GetPVarFloat(playerid, "posY") || pPos[2] != GetPVarFloat(playerid, "posZ"))
{
    /* Position is changed... */
}

Another options is to use floatcmp.