There are times when you will want blocks to repeat. Instead of duplicating blocks and ending up with a long script that might be confusing, there are looping control blocks that you can wrap around the script you want to repeat. › “forever” – loops until the program ends. This is basically an infinite loop as it goes on forever. › “repeat ()”- loops the specified number of times. › “repeat until < >” Repeat until the condition is True. You will use predicate blocks which can be found in the Operator Palette
Let’s look at the “repeat until” block a bit closer. › Just like REPEAT, it will do everything inside the C- shaped block a certain number of times. However before it starts the loop each time, it checks to see if the condition (x > 5) is true. When this is condition is true, it will not repeat again.
Step 1 – Welcome Player, build Script! Step 2 – Inform Player about their guess Step 3 – Allow player to choose max value Step 4 – Count number of guesses Step 5 – Report number of guesses to player
Remember from Lab1, when we created a script for the sprite to ask our name!
Let’s look at our algorithm…
We want to give the player more information if they don’t guess correctly. Have the sprite tell the player if the secret number is bigger or smaller than the number that they guessed. Work with your neighbor to add to your script…
Remember there is more than one way to do this!
Change your code so that the player choose the max value, instead of the sprite choosing a number between 1 and 10 Use this maximum number as the highest number that the sprite will choose. Hint: Make a new variable for “max” value
Make a variable for “max”
Now let’s keep track of how many guesses it takes before the player guesses the right number. You will need a new variable for this task and will need to add to it every time a guess occurs.
When the player guesses the secret number tell them how many guesses it took, and congratulate them using their name. Hint: Use previous variables!