The black letter of the law does not always mean what it seems to mean. How the law is applied is expressed in court decisions, especially appeals, and in jury instructions. If all you know is the statute you read, you do not know the law. However, the statute is a good place to start.
In general, you do not have to wait to be attacked in order to legally respond with force or deadly force. Justice Oliver Wendell Holmes, Brown v US, 9121: "Detached reflection cannot be demanded in the presence of an uplifted knife."
Rather, Texas Penal Code 9.31, 9.32, and 9.33 us the term "reasonably believes." Further, this statute uses the terms "unlawfully and with force entered, or was attempting", "unlawfully and with force removed, or was attempting", and "was committing or attempting to commit." https://statutes.capitol.texas.gov/SOTW ... m/PE.9.htm
The law does not require that we wait to be attacked. It does require that we act "reasonably." If you have questions, ask your attorney.
If you do not have one or cannot afford one, US-Texas-Law-Shield has many free videos discussing self defense and gun law in general and Texas law in particular. https://www.youtube.com/c/uslawshield/videos
They also publish a book after each Texas legislative session that explains the justice system process and Texas law in plain language. The price is $29.95. Amazon has higher prices. https://book.uslawshield.com/texas/
Attorney Andrew Branca has a free Facebook LIVE video each Thursday at 3pm Central. https://www.facebook.com/LawofSelfDefense/
Branca also posts a blog. Not all of his blog posts are open access, but many are. https://lawofselfdefense.com/blog/
Branca wrote the book, "The Law of Self Defense", with forward by Massad Ayoob. https://lawofselfdefense.com/product/la ... d-edition/
You carry a gun so you’re hard to kill.
Know the law so you’re hard to convict.
- Andrew Branca