Minecraft my mouse acts wired?

Ok so my minecraft acted all fined a while ago until i went back to play minecraft again and suddenly when i press w my mouse goes up and i can't see even if i look down it forces my mouse to go back up which never happened before it never did that before what can i do to fix this?

Added (1). oh i forgot to mention that when its out of minecraft its normal

Should I buy a MacBook Pro?

I'll be making music and doing a little gaming when I'm not home with my desktop gaming PC (Minecraft, Portal, Grid 2 maybe on low settings) and also installing Windows with Boot Camp. Money isn't a problem and I will be buying it at summer of 2016. From the laptops I have looked at, a MacBook just seems right, partially because I like OS X and the design of the MBP. Should I buy it or is there a better alternative?

How to fix the psvita analog problem?

I was playing nfs most wanted and the camera kept on staying on the side of the car and not behind an then on killzone and minecraft only when i move automaticallly the camera moves by itself only when i move the left analog

I'm bored, what should I do?

I've got so many things to do, which is why I'm bored, I can't figure out what i'm in the mood for!
1. Play with cat
2.Minecraft
3.prank neighbors
4.Sing
5.Dance
6.Sleep
7.Climb a tree
8.Eat
9. Haunted House
10.Friend's House
11.Look for lost pet
12.Watch TV

What should I do? Hmm?

Intel core i3-4030U or AMD E2-6110?

I plan to buy a new laptop and there's 2 laptops I'm interested in that are affordable which contain the processors listed above. I need to know which one would have overall better performance for games like minecraft or some steam games like the binding of isaac(rebirth) or tf2. Both laptops are windows 8.1 if needed.

How to make a sliding undeground staircase that is easy in minecraft?

I have a house in minecraft that I have a vault in on the main floor and i want to make a sliding staircase in that goes underground into my vault. I want it to be 2 wide or whatever and easy. Please help me, I looked all over youtube and the videos were no help

Is there like a pokemon ball that can catch players in minecraft?

Like when you catch them they go into this weird world and stuff?(P.S. Lol I know that would be mean but its funny!)

Added (1). And you can bring them back and send them back in by right clicking the ball (This would be funny to use them like pokemon putting them in a battle for you to get rid of monsters then right clicking the ball to send them in the weird world again!)