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217 engine question
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by
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heywood
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HEYWOOD                           2025-11-19 11:34
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CAN ANYONE PLEASE EXPLAIN HOW THE FIREFLY SURVIVES THIS SCENARIO (ASSUMING THE AMOEBA DOESN'T GROW A SQUARE FIRST)?

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NESDORI                           2025-11-19 12:34
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WHEN A FLY IS SCANNED, FIRST IT CHECKS IF THERE'S SOMETHING NEXT TO IT WHICH WILL CAUSE IT TO EXPLODE (Κ OR AMOEBA). IF THERE IS, IT WILL EXPLODE, OTHERWISE THE FLY WILL TURN OR MOVE. AFTER THE FLY MOVES, A CHECK FOR THE EXPLOSION IS NOT DONE AGAIN, THE CHECK IS DONE JUST ONCE AT THE BEGINNING OF THE FLY SCAN PROCEDURE.  
  
SO WHEN THE FLY IS AT THE INTERSECTION, FIRST IT CHECKS FOR AMOEBA OR  Κ AND BECAUSE THERE AREN'T ANY, IT MOVES DOWN. NOW THE FLY IS NEXT TO A PIECE OF AMOEBA BUT THE EXPLOSION CHECK WAS ALREADY DONE AND THE FLY SURVIVES ON THIS FRAME. THEN THE SCANNING CONTINUES AND AMOEBAS GET SCANNED. ALL AMOEBAS ARE NOW ENCLOSED SO AT THE END OF SCAN, ENCLOSED-FLAG IS SET WHICH WILL TURN AMOEBAS INTO Α DURING THE NEXT FRAME. EACH PIECE OF AMOEBA IS TURNED INTO Α WHEN THE AMOEBA IS SCANNED NEXT TIME. ON THE NEXT FRAME, ALL AMOEBAS ARE SCANNED BEFORE THE FLY SO THE PIECE OF AMOEBA WHICH IS NEXT TO Κ IS TURNED INTO Α BEFORE FLY GETS SCANNED. FLY THEN CHECKS FOR AMOEBA AND Κ BUT THERE AREN'T ANY ANYMORE, THE AMOEBA JUST GOT CONVERTED INTO Α AND THE FLY SURVIVES.  
  
IF THE CAVE WOULD BE MIRRORED SO THAT THE FLY WOULD START AT THE LEFT AND THE AMOEBAS WOULD ON THE RIGHT, THE FLY WOULDN'T SURVIVE BUT ALWAYS EXPLODE. WHY'S THAT?  
  
THE FLY WILL EVENTUALLY AGAIN MOVE DOWN NEXT TO THE AMOEBA. THE EXPLOSION CHECK IS DONE BEFORE THE MOVEMENT SO THE FLY WILL SURVIVE. AMOEBAS ARE AGAIN ALL ENCLOSED SO ENCLOSED-FLAG IS SET AFTER THE SCAN.  
  
BUT THEN ON THE NEXT FRAME, NOW THE FLY IS SCANNED BEFORE THE AMOEBAS BECAUSE THE FLY IS ON LEFT OF THEM. NOW THE FLY CHECKS FOR AMOEBAS AND FINDS ONE AND EXPLODES BEFORE THE PIECE OF AMOEBA NEXT TO IT GETS A CHANCE TO CONVERT INTO Α. ONE PIECE OF AMOEBA GETS EXPLODED AND THE REST WILL TURN INTO Α WHEN THEY ARE SCANNED.  
  
I HOPE THIS EXPLANATION WAS COMPREHENSIVE AND CLEAR ENOUGH :)

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HEYWOOD                           2025-11-19 13:44
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VERY COMPREHENSIVE AND VERY CLEAR, THANK YOU!

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DUSTIN                            2025-11-19 19:00
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"OF COURSE" THIS IS IN THE CSO SERIES AS WELL:  
  
"CAVE SCANNING ORDER 20 LV2"  
"CSO 114 THE AMOEBA'S AMBUSH" - HERE THE EFFECT HAS TO BE AVOIDED FOR SUCCESS (BY LUCK)  
THESE ARE THE CAVES I REMEMBER, ANYWAY ;)  
  
THERE ARE TWO OTHER FANCAVES IN MY HEAD TOO, ONE FROM arno, ONE FROM RTA DASH, BUT I DON'T RECALL THEM EXACTLY.

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HEYWOOD                           2025-11-19 19:25
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I MEAN THIS TAB HAS BEEN OPEN IN MY BROWSER FOR ABOUT TWO YEARS NOW BUT I CLEARLY HAVE A LOT OF HISTORICAL AS WELL AS TECHNICAL KNOWLEDGE TO CATCH UP ON. :D