Friday, February 24, 2006

Still some doubts about Bubble Bobble

The emulation of Bubble Bobble is already virtually perfect, but there is still a doubt about the clock item.

Currently, when you pick it up the enemies stop but the bubbles continue moving.

It would make sense if the bubbles stopped moving too, and this idea is corroborated by the way variables are set up in the MCU shared RAM. The MCU would be responsible for stopping the bubbles and make them start again when the clock effect ends.

What we need is to verify the behaviour on an original board. Bootlegs don't count (the clock behaviour is definitely wrong in them), nor do other emulator or ports count. Only the original board matters.

Can anyone help?

2 comments:

Nicola said...

Thanks for the feedback.
When you could fire bubbles, did they float normally after the initial horizontal movement, or did they stay still? E.g. if you bubbled an enemy did it float after being bubbled or did it remain in the place it was freezed?

The clock item appears after you've popped at least 12 lightning bubbles. The first level where lightning bubbles appear is round 17. So the quickest way to get to a clock item is to play to round 17 and pup at least 12 lightning bubbles, then the clock will appear in round 18.

Nicola said...

Thanks to all for the answers.

However I have to stress that only the original version of Bubble Bobble counts, therefore metaterpe's comment is not applicable. The effect of the clock item not vanishing is a typical symptom of the bootleg versions, so what happened to the bubbles in those versions is irrelevant to us.