design, write and debug programs that accomplish specific goals, including controlling or simulating physical systems; solve problems by decomposing them into smaller parts.
use logical reasoning to explain how some simple algorithms work and to detect and correct errors in algorithms and programs
LO: To solve problems using conditional statements. (2)
Let's look at a new world called Apple1, you can see that Reeborg has to collect two apples and then reach the goal/home.
We can solve this world by using our while and if statements:
while not at_goal(): if object_here(): take() else: move() else: done()
Now we're going to look at the world Apple2, we now have an additional problem - a wall to deal with!
Have a go at writing the code for this problem, test it and debug it if necessary.*
Remember that n if statement can contain more than one if statement.
Look at that apple in the bottom corner by the wall - what order would you need to check things?
Remember to save any incorrect attempts for debugging.
Once you code works, try it on the world Apples to see if Reeborg can complete it - is there anything you need to add?
* Solutions can be found in the code examples below.