[WIP] Galaga conversion - Page 5

jotd · 19 July 2024, 07:57

If the stars are moving it means that the game wrongly detected a "fast" machine. So you get 50FPS mode. It should fix the stars and select 25FPS mode for it to be playable on A500. Thanks for reporting.

saimon69 · 19 July 2024, 19:33

Sounds like manual tweaking from an in game menu might be an optimal solution

jotd · 22 July 2024, 22:26

Final version released on itch. I've added 17FPS option (1 frame out of 3) and it runs but is very jerky.

I've tried everything to make it run faster on plain A500 at 25Hz but it's still slow despite a lot of optimizations.

Runs perfectly at 50FPS on fastmem-equipped amigas...

A lesson learned: too many small objects on the screen is too much for vanilla machines. Slightly disappointed, as the game is great and it took me several months to transcode it prorperly, even with the source code.

Cris1997XX · 22 July 2024, 22:48

Welp, I guess the Amiga would fare better with a lot of large objects on the screen

Estrayk · Yesterday, 00:02

Quote:

Originally Posted by jotd

Final version released on itch. I've added 17FPS option (1 frame out of 3) and it runs but is very jerky.

I've tried everything to make it run faster on plain A500 at 25Hz but it's still slow despite a lot of optimizations.

Runs perfectly at 50FPS on fastmem-equipped amigas...

A lesson learned: too many small objects on the screen is too much for vanilla machines. Slightly disappointed, as the game is great and it took me several months to transcode it prorperly, even with the source code.

Well, really at 14Mhz can be playlable. I made a video for that you check it.
Real Amiga A500 OCS Kickstart 1.3 68000 14Mhz. (ACA500+)

[ Show youtube player ]

saimon69 · Yesterday, 00:40

The 17FPS is what me and my friends in jargon we used to call "three frames" game

TCD · Yesterday, 05:21

Quote:

Originally Posted by jotd

Final version released on itch.

So... time for the HOL entry?

DanyPPC · Yesterday, 06:45

Quote:

Originally Posted by jotd

A lesson learned: too many small objects on the screen is too much for vanilla machines. Slightly disappointed, as the game is great and it took me several months to transcode it prorperly, even with the source code.

Nowadays I think the minimum target for an Amiga game is A1200 + Fast Ram.
So, your perfect arcade conversions are a little miracle when they run on a simple A500 1MB.

Many, many thanks jotd for these arcade port to Amiga.
The whole community is grateful to you.

DanyPPC · Yesterday, 08:29

Occasionally some stars gfx bug and slowdowns starting from Level 4.
More evident on Apollo V4SA (Turtle Mode), less on Minimig (MiST) and real A1200/030.

jotd · Yesterday, 10:33

HOL entry please!

Nice video Estrayk, looks very good at 14Mhz! At level 4 we can see that it still slows down a lot when more enemies arrive. But it's still playable most of the time.

saimon69 · Yesterday, 23:52

Quote:

Originally Posted by jotd

HOL entry please!

Nice video Estrayk, looks very good at 14Mhz! At level 4 we can see that it still slows down a lot when more enemies arrive. But it's still playable most of the time.

Would have this been the same slow if you by hypothesis used bobs instead of sprites and recode the display rendering to be amiga friendly rather than recreate the arcade system?

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19 July 2024, 07:57	#81
jotd This cat is no more Join Date: Dec 2004 Location: FRANCE Age: 52 Posts: 8,400	If the stars are moving it means that the game wrongly detected a "fast" machine. So you get 50FPS mode. It should fix the stars and select 25FPS mode for it to be playable on A500. Thanks for reporting.

19 July 2024, 19:33	#82
saimon69 J.M.D - Bedroom Musician Join Date: Apr 2014 Location: los angeles,ca Posts: 3,649	Sounds like manual tweaking from an in game menu might be an optimal solution

22 July 2024, 22:26	#83
jotd This cat is no more Join Date: Dec 2004 Location: FRANCE Age: 52 Posts: 8,400	Final version released on itch. I've added 17FPS option (1 frame out of 3) and it runs but is very jerky. I've tried everything to make it run faster on plain A500 at 25Hz but it's still slow despite a lot of optimizations. Runs perfectly at 50FPS on fastmem-equipped amigas... A lesson learned: too many small objects on the screen is too much for vanilla machines. Slightly disappointed, as the game is great and it took me several months to transcode it prorperly, even with the source code.

22 July 2024, 22:48	#84
Cris1997XX Registered User Join Date: Oct 2022 Location: Roma Posts: 367	Welp, I guess the Amiga would fare better with a lot of large objects on the screen

Yesterday, 00:40	#86
saimon69 J.M.D - Bedroom Musician Join Date: Apr 2014 Location: los angeles,ca Posts: 3,649	The 17FPS is what me and my friends in jargon we used to call "three frames" game

Yesterday, 08:29	#89
DanyPPC Registered User Join Date: Dec 2016 Location: Italy Posts: 779	Occasionally some stars gfx bug and slowdowns starting from Level 4. More evident on Apollo V4SA (Turtle Mode), less on Minimig (MiST) and real A1200/030.

Yesterday, 10:33	#90
jotd This cat is no more Join Date: Dec 2004 Location: FRANCE Age: 52 Posts: 8,400	HOL entry please! Nice video Estrayk, looks very good at 14Mhz! At level 4 we can see that it still slows down a lot when more enemies arrive. But it's still playable most of the time.

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