pawn Code:
GetPlayerPeredPos(playerid, Float:dist, &Float:x, &Float:y, &Float:z) {
new Float:angle;
GetPlayerPos(playerid, x, y, z);
GetPlayerFacingAngle(playerid, angle);
x += dist * floatcos(angle-270.0, degrees);
y += dist * floatsin(angle-270.0, degrees);
}