Find and Fix Bugs

1. •

   Analyze the code carefully to find all possible causes of the problem.

2. •

   Think hard and output a list of hypothesis of all possible causes of the problem.

3. •

   Add extensive print statements to the code that help you comfirm or disprove your hypotheses. For example:

Player tick positon += direction print "{this} moved in {direction} to {position}"

1. •Write unit tests in the static class "tests" in a new file in the "tests" folder (for example "tests/playerMovement.l"). The tests should use these functions to simulate user input: click, drag, hover, moveLeftStickTo, etc. For example:

tests playerShouldMoveRight app.createTestLevel moveLeftStickTo {1,0} by bluePlayer wait 10 frames expect bluePlayer.gridPos toBe {1,0}

1. •

   Use the vscode's build-in tool (execute/runTests) or the runTests tool to run the unit tests.

2. •

   Carefully analyze the output of your print statements. The goal is to confirm one of your hypothesis. Repeat steps 1-6 until you can confirm one of your hypothesis.

3. •

   Once you confirmed a hypothesis, fix the problem.

4. •

   Confirm you fixed the problem using the unit tests.