Scratch Game
Hard
45 mins
160 points
What you need:
  • Computer/laptop

Memory Game part 2

This is part 2 of the Memory Game project.

1 - Complete part 1 of this project

In a separate lesson you should have completed part 1 of this project. Open your project in Scratch and continue to the next step in this lesson.

2 - Add the 'Arrow1' sprite

The player will enter in their answer by moving an arrow and clicking the coloured circles. Add the Arrow1 sprite from the sprite library and then add the following code to the Arrow1 sprite.

when green flag clicked switch costume to [arrow1-d v] // up arrow forever go to [mouse-pointer v] // make it follow the mouse pointer end



3 - Player selects a colour

Now add the following code to the Arrow1 sprite, to capture when the player clicks one of the colours and save that colour's number into the 'answer' list.

We will create new messages called 'red', 'blue', 'green' and 'yellow' that we will broadcast. Then in a later step we will receive these messages in the pad sprite and make the correct colour light up and play the sound.

when this sprite clicked if < touching color [#ff9c9c] ? > then add (1) to [answer v] // 1 = red broadcast [red v] // create this message end if < touching color [#9b99ff] ? > then add (2) to [answer v] // 2 = blue broadcast [blue v] // create this message end if < touching color [#71b88e] ? > then add (3) to [answer v] // 3 = green broadcast [green v] // create this message end if < touching color [#f3ff97] ? > then add (4) to [answer v] // 4 = yellow broadcast [yellow v] // create this message end


4 - Check their answer

When the player has entered the same amount of colours that's in the 'sequence' list, we will go through each colour and check if the sequence is correct.

If any of them are incorrect then we will play a sound and use the stop [all] block to end the game.

Add the following new code blocks to the Arrow1 sprite at the bottom of the When this sprite clicked block of code.

when this sprite clicked if < touching color [#ff9c9c] ? > then add (1) to [answer v] broadcast [red v] end if < touching color [#9b99ff] ? > then add (2) to [answer v] broadcast [blue v] end if < touching color [#71b88e] ? > then add (3) to [answer v] broadcast [green v] end if < touching color [#f3ff97] ? > then add (4) to [answer v] broadcast [yellow v] end if < (length of [answer v]) = (length of [sequence v]) > then // add this new code set [x v] to (1) // start our counter at 1 repeat (length of [answer v]) // go through each item in the lists if < not < (item (x) of [answer v]) = (item (x) of [sequence v]) > > then // if they do not match play sound [Toy Honk v] until done //add this sound stop [all v]// game over end change [x v] by (1) // add 1 to our counter end end

5 - Play the next round

If they got the sequence correct then we will:

  1. change the arrow into a check mark.
  2. play a sound.
  3. change it back to the arrow.
  4. send a message to play the next round.

First add a new costume (Button4-1) to the Arrow1 sprite and rename the costume to be called 'correct'.

Then add the following new code to the Arrow1 sprite underneath the repeat block.

when this sprite clicked if < touching color [#ff9c9c] ? > then add (1) to [answer v] broadcast [red v] end if < touching color [#9b99ff] ? > then add (2) to [answer v] broadcast [blue v] end if < touching color [#71b88e] ? > then add (3) to [answer v] broadcast [green v] end if < touching color [#f3ff97] ? > then add (4) to [answer v] broadcast [yellow v] end if < (length of [answer v]) = (length of [sequence v]) > then set [x v] to (1) repeat (length of [answer v]) // go through each item in the lists if < not < (item (x) of [answer v]) = (item (x) of [sequence v]) > > then play sound [Toy Honk v] until done stop [all v] end change [x v] by (1) end wait (0.5) seconds // add this new code switch costume to [correct v] // show the check mark play sound [Tada v] until done// add this sound switch costume to [arrow1-d v] // switch back to the up arrow broadcast [next round v] // send this message to play next round end



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Scratch is developed by the Lifelong Kindergarten Group at the MIT Media Lab. It is available for free at https://scratch.mit.edu
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