The DQN model can now successfully land the rocket after the latest debugging session.

Fixed:
IF statement conditions for rocket’s y coordinates and ground as I forgot that 0 is the sky so the rocket’s y coordinate must be greater than the ground and its velocity must be a safe speed for it to land successfully
Terminated or truncated flag in step function for landing successfully was originally false which is incorrect as the algorithm must end since the goal has been achieved
Order of IF statements for crashing and landing checking in the GUI loop was wrong as even if the rocket landed, it would continue to fulfill the conditions for a crash and so the check for the landing conditions must be placed before.

Next steps:

I am curious to see how the agent will manage landing the rocket if I introduce time dependent velocity as a result of acceleration due to gravity that changes as the simulation progresses.