• Functions update() and _process() ignore delta.
• When the character jumps, you should apply an impulse immediately, not set up magic numbers for the next timestep.
• The test for transitioning from Falling to Standing doesn't make a lot of sense; if it seems to work, it is by mistake.  
  You should c…

Test

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Sorry, I tried to hide this after test but the %$#@! forum wouldn't let me.