valid new empty targeting

game.go

@@ -449,11 +449,29 @@ func (g *Game) PlayerAct(id int, cmd string) *Deck {
 				fmt.Println("own target not on own board")
 				return nil
 			}
+		case TargetOwnEmpty:
+			if board != g.CurrentTurn {
+				fmt.Println("own target not on board")
+				return nil
+			}
+			if g.GetBoard(board)[pos].Type != EmptyValue {
+				fmt.Println("own empty target not empty")
+				return nil
+			}
 		case TargetOpp:
 			if board == g.CurrentTurn {
 				fmt.Println("opponent target not on oponents board")
 				return nil
 			}
+		case TargetOppEmpty:
+			if board == g.CurrentTurn {
+				fmt.Println("opponent target not on board")
+				return nil
+			}
+			if g.GetOpponentBoard(board)[pos].Type != EmptyValue {
+				fmt.Println("opponent empty target not empty")
+				return nil
+			}
 		case TargetNone:
 			fmt.Println("NoneTarget'd ability?")
 			return nil