Variables Intro 2 Solution

1. Arf the Dog gets five points when he eats a cupcake and two points for eating a hotdog. When food is eaten it disappears. Reset the points when you click the green flag.

   Arf the Dog:

   
       when green flag clicked
       set [points v] to (0)
       
   

   Cupcake:

   
       when green flag clicked
       forever
         if < touching [Arf the Dog v] > then
           change [points v] by (5)
           hide
           end
         end
       
   

   The hotdog is almost identical to the cupcake.

2. There are two variables. One is a “goal” number. The other is the “current” number.

   • You control the current number with the arrow keys (up, down).

   • When the current number matches the goal number, the backdrop changes to “You Win”.

   • Set the goal number to be a random number 1 to 10 when green flag is clicked.

     
          when green flag clicked
          set [goal v] to (pick random (1) to (10))
     
          when [up v] key pressed
          change [current v] by (1)
     
          when [down v] key pressed
          change [current v] by (-1)
     
          when green flag clicked
          forever
            if < (goal) = (current) > then
              switch backdrop to [YouWin v]
            end