Dreaming is a way of your subconscious telling you that your mind is trying to process something. In this instance I would say it's more unresolved issues toward your dad you aren't dealing with and they are coming up in your dreams. I used to dream of my dad causing me pain then he would die in my dream and since talking/yelling/laughing with him on occassion it's really helped me to move forward in life. The power has shifted he no longer holds sway over me and knows it and we can now get along for small periods of time without killing each other . But I no longer dream of him.