So apparently I posted the denouement to this thread over here:
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I don't know how I missed this one earlier, but I did. Probably because it had so many replies on it fairly quickly. I tend to stay away from threads that already have 20 or 30 replies, because I figure everything that can be said has been. Several times.
However, I did soldier through this thread this time, and have one loose end to comment on. Early in the thread, some commented on the {fact, assumption, ?} that the door to the homeowner's house was unlocked, and therefore it could not be burglary, and/or no Castle Doctrine, and/or therefore it could not be legal/justified to use deadly force (disregarding for a moment that the confrontation ended up out in the street).
AFAIK, whether the door is locked or not is irrelevent as far as self-defense in your home, and the issue here is not "burglary," it is justifications for self-defense (Penal Code Chapter 9). Among the reasons you are legally justified in using deadly force in your home is
"...the person against whom the force was used:(A) unlawfully and with force entered, or was attempting to enter unlawfully and with force, the actor's occupied habitation, vehicle, or place of business or employment;"
It does not take much to meet the "with force" element. Mr. Charles Cotton commented on this in another thread that I do not have at my fingertips, but I believe he was giving background to the Legislature's discussions of this specific part of the law when the Castle Doctrine was being implemented. IIRC he and others were concerned about the "with force" issue, but the criminal lawyers present explained to him that actions as small as turning a door knob or opening an unlocked window could qualify. I did my own internet lawyering, and found this to be the case in many states. So presuming the college student did infact open an unlocked door in the wee hours, he certainly qualified to be shot at that point.
As to what happened when he boogied out into the street, that was up to the jury...
Also note that under Texas law,"
Voluntary intoxication does not constitute a defense to the commission of crime." Penal Code Section 8.04.