If I use the code to draw something in runtime, is it consider against the rules? cause I do that all the time.

Please see the bottom rule;

ℹ️ If you feel your question hasn't been answered yet, we trust you to use your own judgement. It's meant to be a game jam where you challenge yourself to only use premade assets. Trying to think of edge-cases to circumvent these rules is not within the spirit of the game jam.

This answers every question you might have!