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SkillGrid - new AGA game in the works
Quite a regular
Joined:
2006/12/6 0:11
From Ferrazzano, Italy
Posts: 535
Whoops, it looks like I had totally forgotten to post about this here! Let me fix that...

SkillGrid is a mini-game, of the score-attack, vertical shooter kind. It's for stock A1200.
I've started working on it towards the end of 2017. Development was interrupted by work on other projects, but lately it resumed.
Here's a fresh video preview:

https://www.youtube.com/watch?v=jApqi3DVgls&vq=hd1080

The game features:
* mixed gameplay based on shooting and catching of bonus/malus cells;
* 3 parallax layers scrolling at a variable speed;
* 1 fixed layer for the HUD and laser beams;
* real transparencies (each color can have any 8 bit degree of transparency);
* 1 4-plane sprite for the spaceship + 1 2-plane sprite for the afterburner flame;
* 6 2-plane sprites for the enemies;
* pixel-perfect collision detection;
* 3 audio channels allocated dynamically for one-shot sounds;
* 1 audio channel allocated for the afterburner looping sound;
* variable afterburner sound frequency, depending on the ship vertical speed (calculated taking into account also the scrolling);
* music in the form of a 14 bit lossless-packed mono PCM sample, played at ~28.9 kHz (when it kicks in, it allocates one of the channels used for sounds);
* music playback looping support;
* single load from either HD or floppy disks.

Notes:
* the afterburner sound is off while music plays to allow enjoying the music better and leaving a channel free for the more important events-related sounds;
* the afterburner sound volume is kept low so that it does not become annoying;
* the music in the video is a temporary placeholder; it is a mix from the Italian theme of the Japanese anime Kotetsu Jeeg from the 70s;
* despite the video was uploaded in lossless quality, the compression applied by YouTube degraded it a lot.


Edited by saimo on 2018/7/4 20:41:55
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Re: SkillGrid - new AGA game in the works
Quite a regular
Joined:
2007/2/27 10:47
From Gravity well
Posts: 599
@saimo

The descriptions I came across of the 14-bit native playback made at least me think that it was an exclusive mode: I didn't expect the usual 4 channel layout to apply. But this suggests something else, and does make more sense, since Amiga volume control is per hardware channel.

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Re: SkillGrid - new AGA game in the works
Quite a regular
Joined:
2006/12/6 0:11
From Ferrazzano, Italy
Posts: 535
@Thematic

Paula doesn't have a "14 mode", so basically the usage of the channels is up to the programmer.

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Re: SkillGrid - new AGA game in the works
Home away from home
Joined:
2009/7/7 3:34
From Toronto, Canada
Posts: 2248
@saimo

sooo happy you took a break from making your excellent C64 games to come back to Amiga

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c64-dual sids, A1000, A1200-060@50, A4000-CSMKIII
Indivision AGA & Catweasel MK4+= Amazing
! My Master Miggies-Amiga1000 & AmigaONE X1000 !
mancave-ramblings

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