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MAME Ms. Pac Man Issue
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Dav:

--- Quote from: FrizzleFried on December 27, 2006, 02:32:39 pm ---That is bloomin' strange....I must have pumped a couple hundred dollars in to Ms. Pac Man over the years and never once experienced that bug...

...and I can appreciate the technical explaination...and that would work if we were taking about an 8 pixel max opject....but I don't think that is the case here...anything larger than the size of the space being reported (in this case 8 pixels) would not 100% swap spaces and would therefore cause a collision detection...right? 

That said,  it is obviously normal behavior,  but perhaps not exactly for the reason Dev stated.

--- End quote ---

Regardless of the size of the sprite it has an exact pixel point coordinate location.  It doesn't check all points on the sprite; only the origin point of the sprite is converted to the grid squares. 

That's also the reason why sometimes you barely touch a ghost and die and other times you can be partially engulfed and still survive.


The reason most people don't see it is they don't usually charge head first into a ghost. 
Hoopz:

--- Quote from: Dav on December 27, 2006, 03:40:19 pm ---The reason most people don't see it is they don't usually charge head first into a ghost. 


--- End quote ---

Hence why I see it all the time!   ;D
ppilot:
This is known as a 'booey', and there are even patterns that take advantage of it (I know a 9-key pacman pattern that has 4 booeys in it, it's great fun.)  More info here:

http://www.twingalaxies.com/forums/viewtopic.php?t=5727&view=next&sid=97bf758352a15ca0250daf2188d1196e

FrizzleFried:
I dunno...I played a game this morning where it happened twice in a single game...and once when my Ms. Pac traveled a good inch toward the ghost first (not a direct switch of directions).

Being I don't think I had ever saw it before ... and now it is happening multiple times in a single game...something's GOTTA be up.
Hoopz:
Why not post this over at the Mameworld forums???  >:D   :laugh2:

Seriously, why do you think it HAS to be a problem with Mame? Did you read the posting on the link at Twin Galaxies?
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