A man with a history of violence has been sentenced to 14 years in prison for robbing a man at gunpoint last year.The robber, Roger Dale Tackett, 45, entered guilty pleas before Circuit Court Judge Bart Stanley to charges of aggravated robbery and possession of a weapon by a convicted felon and was directed to serve 14 years in the state penitentiary. Given his prior record, he was sentenced as a repeat offender and must serve at least 35 percent of his sentence in prison before being considered for parole.His partner in crime, Christy D. Newby, 38, was given a six-year sentence for facilitating the crime of aggravated robbery.Their prison time comes for a home invasion robbery in which Tackett put a gun to the victim’s head.“While the victim was on the ground, Roger Dale Tackett went through his pockets and stole his wallet that contained $220 cash,” said Warren County sheriff’s investigator Steven Carpenter, noting the robber also took a 40-caliber handgun and some morphine pills off the victim. Tackett threatened the man’s life during the course of the robbery, Carpenter revealed.