In which case you are responsible. There is no accident.
It's all a question of probabilities and risk. The probability to hit someone while driving normally are pretty weak, and the consequences fairly low in normal circumstances (i.e. while you respect every law). When drunk, the probabilities go through the roof, as well as how damaging the consequences can be.
When you start to take drugs, even considering all the surrounding context, the consequences can be terrible and the probabilities are quite high.
So no, it not an accident, assuming you see yourself as a human being, able to think about these. If you see yourself as a victim who couldn't foresee anything, then good for you.