Fine-tune food swiping

[tjjjwxzq]

Swiping works but doesn't feel that ideal. Issues:

1. Feels unresponsive
   • not enough leeway for detecting collision with food rigidbody
   • either the rigidbody is too small or touch detection shouldn't be done only during TouchPhase.Began
2. Speed of movement seems a bit unpredictable (slightly too explosive?)
   • either increase linear drag
   • or tune the speed scale

[tjjjwxzq]

1. Doing touch detection during the Move phase definitely made it more responsive.

[tjjjwxzq]

• Somehow a light tap also seems to send food flying off sometimes (might be due to too low a swipe distance threshold) HAVE TO DISABLE MOUSE INPUT OR IT WILL SCREW UP WITH TOUCH INPUT on the android build
• Some food objects seem to be moveable even when they are not tapped (should disable moveable flag when they are returned to the pool)
• Food is still draggable even when the swipe is very prolonged, as long as player doesn't lift finger (moveable flag should be disabled after a certain time limit)

[tjjjwxzq]

Bugs are fixed.

Now it's mainly that swipe feels too explosive