Scratch Coding Club

• Check out the code in the project below by going to the links and
  pressing 

• Model: https://scratch.mit.edu/projects/176430425/

• This game is continued in Lesson 5, because it takes longer than 1.5 hrs.

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Basic Game

• The player slides a basket left and right on the bottom of the screen and catches cats as they fall from the top of the screen. Catching the crabs decreases the score, while catching cats increases it.

• Teaches:

  • Cloning

  • Making sprites fall/go from one side of the screen to the other

• Make a basket that follows the mouse, but only in the x position. Use the “go to x:___ y: ___” block, and in the space for x put in the “x position” bubble found under the dark blue “Motion” tab of blocks.

• Make a sprite that falls from the top of the screen to the bottom, then goes back up to the top of the screen at a random x position and falls again.

  • 2 methods: 

    • Constantly change the sprite's y- position and 
      check if it hit the ground or the basket​ in the same loop

    • Parallel process- use the "glide to___" block in one
      script, and constantly check if the sprite hit the ground
      or the basket in a separate script

• Make a variable that counts how many times the falling sprite
  gets caught by the basket.

• Make a few clones of the falling sprite. The cloning blocks are
  found under yellow “Control” blocks tab.

  • Warn the kids about putting the “Make clone of myself”
    block in a forever loop unless the clones are being deleted
    somewhere else! The game will lag and crash!

  • Program the clones with the “When I start as a clone” start
    block. Give them the same script as the falling sprite, so
    they all fall.

• Make another falling sprite with all the same scripts as the first one. This will be the “crab”, or the one that will make the player lose points if it catches it.