Alright so I was out practicing launching the other night and went to launch and the car did nothing went nowhere.
I can put the car in gear and start it. The car is in gear and doesn't move. I can shift to second without using the clutch while the car is running and the car does nothing. If I rev it up in like third I can very faintly here something moving and in fifith what ever it is, is moving faster. However the car still seems to shift fine and there are no grinds going in to the gears and I still have pedal pressure. It's very confusing help me out guys. Thanks.
Also the clutch is a RPS twin carbon

 

if the car is in gear and doesn't move it sounds to me to be a bad clutch. When my clutch went out recently it would just idle in all gears including reverse.