Time for action – creating star collisions

Star collisions need to be made and removed from the stage so that points can be accumulated for the player.

1. Create a function for the star collision called onStarCollision() and have a self and event parameter:

   local onStarCollision = function( self, event )

2. Add the if statements that remove the stars children from the game screen when a collision is made. Increment the score by 500 for each star removed from the screen. Close the function with end:

     if event.phase == "began" and self.isHit == false then
   
       self.isHit = true
       print( "star destroyed!")
       self.isVisible = false
   
       stars.numChildren = stars.numChildren - 1
   
       if stars.numChildren < 0 then
         stars.numChildren = 0
       end
   
       self.parent:remove( self )
       self = nil
   
       local newScore = gameScore + 500
       setScore( newScore )
     end
   end

   

What just happened?

The star collision occurs on first contact with if event.phase == "began" and self.isHit == false, assuming the...