Just so, can a police officer make you get out of your car?
The Police can require you to get out of your vehicle if they have reasonable cause to suspect you of committing an offence. They can likewise search your car if they have reasonable cause of you committing (certain) offences the evidence of which may be in the car.
Also, can you tell a cop to get off your property? They can take reasonable actions, like entering your property to knock on your door and ask if they can talk to you, but you can at that point say no and you'd like them to leave. If they don't have a warrant or probable cause, they must generally at that point leave the property.
Secondly, can a cop stop you if your parked?
The term "pull you over" means "to stop a moving vehicle at the side of the road". Clearly, if you are parked, you are already pulled over (past tense) and thus the cop cannot put you over. There are some offences, e.g. parking, that you can be ticketed for even though you are not there.
Do you have to get out of the car for a cop in Texas?
You must exit the car if asked to by a police officerIn most traffic stops, the office will prefer that you remain seated in the car, with your hands visible on the steering wheel. However, in certain circumstances, the officer may request that you step out of the car.