Idea for homebrew title that 7800-homebrew dev. may consider to produce: Pac Land 1984

[Giles N]

For newbies (like me):

 

https://www.randomterrain.com/7800basic.html#graphics

[Giles N]

I myself need all the short-cut inputs I can get to which software and formats can be used and things relating to compatibility of information between sources (like working on a PC or having to buy special equipment for working with 7800 hardware).

[Giles N]

I’ll share this too for general information for those interested in learning and/or contributing grfx, sound or code.

 

 

[Giles N]

On 10/3/2019 at 7:37 AM, TIX said:

not bad,

but try the same with wide pixels and you got instant pancake

look at my 16x16 (pancake) example with square pixels instead.. looks good !

 

May I ask what program or editor you use to produce 7800 grfx?

 

Can the PacMan grfx you show here, be directly downloaded to a 7800 program code, or will you have to convert it in a way (format, palette, re-draw it in 7800 graphic program, etc)?

[Synthpopalooza]

Use the GIMP, posterize it down to 4 colors and export a .png, and it can be used in 7800basic via incgraphics.  That's how I do it. 

Edited October 4, 2019 by Synthpopalooza

[TIX]

I use Aseprite for general design and animation,

but if the sprites are intended to be in a game, I hand them over in Atari Player Editor format !

Edited October 4, 2019 by TIX

[Giles N]

Ok, so I gave ‘Clyde’ a shot, again 3 colors, 16x16 pixels; blue is supposed to be background (would bectransparent).

So: black, white, light-brown.

 

I think it can be improved upon quite a bit...

 

It was a shot...

Edited October 4, 2019 by Giles N

[Giles N]

3 hours ago, Synthpopalooza said:

Use the GIMP, posterize it down to 4 colors and export a .png, and it can be used in 7800basic via incgraphics.  That's how I do it. 

Incgraphics - is this where the programmers work begin, or is it a part of an editor?

 

I don’t know a line of programming; have only used paint -programs and sprite-editors in the past.

 

Can I work with 7800 graphics without having to program?

Edited October 4, 2019 by Giles N

[Giles N]

2 hours ago, TIX said:

I use Aseprite for general design and animation,

but if the sprites are intended to be in a game, I hand them over in Atari Player Editor format !

The ‘Atari Player Editor’ format can be chosen in Aseprite?

[Synthpopalooza]

incgraphics is a 7800basic command that actively imports the graphic .png into your 7800 ROM itself.

 

It is possible to do up the graphics without having programming knowledge.  If you can export the graphics as .png, and keep them within multiples of 8, vertical and horizontal pixels, and 3 colors plus transparence (for 160A) they can be included in a 7800 ROM itself.

[Giles N]

Another 3 color go at ‘Clyde’.

 

 

[+Defender_2600]

On 10/3/2019 at 2:11 AM, Giles N said:

ahem...
 

 

I would just suggest to consider the real pixel aspect ratio so that, as far as possible, this graphics do not look wide on real hardware. And again, I think a good compromise is 16 horizontal x 32 vertical (the same height as the arcade version).

 

 

 

 

[Jaden (JRH)]

I'll probably have to redraw those sprites I did, now that there's a guide to 7800 graphics.

BTW has programming actually started yet? I have some minor programming knowledge. So, I might be able to help. This is a project that I would definitely love to see completed. So, I want to help as much as I can.

[Synthpopalooza]

Intro music.  Same setup as above, with the same cautions for emulation.

 

 

pacland-intro.A78 pacland-intro.asm pacland-intro.bin pacland-intro-450.A78 pacland-intro-450.asm pacland-intro-450.bin

[Synthpopalooza]

Fairy land music ... this time the setup is different:

 

AUDCTL=$60 (1.79 mhz on 0 and 2, 8-bit all channels)

 

0 - $2x clocked at 1.79 mhz - harmony

1 - $Ax, standard square wave, no special settings - lower harmony

2 - $Cx, clocked at 1.79 mhz - high lead

3 - $Ax, standard square wave, no special settings - plays same as channel 2 but an octave lower

 

Again:  Real hardware only, Prosystem will play most of this, A7800 makes a right mess of it all.

 

 

pacland-fairy.128 pacland-fairy.A78 pacland-fairy.asm pacland-fairy-450.A78 pacland-fairy-450.asm pacland-fairy-450.bin

[Jinks]

Mp3 or wav?

[Synthpopalooza]

Just a moment ... I will have those momentarily.

 

Meantine ... pac-man death.

 

This time, AUDCTL=$40 and only the first two channels play ... $2x and $Ax distortions

pacland-death-450.A78 pacland-death-450.asm pacland-death-450.bin pacland-death.A78 pacland-death.asm pacland-death.bin

[Synthpopalooza]

Audio files for all:

 

 

pacland2.wav pacland-death.wav pacland-fairy.wav pacland-intro.wav

[Giles N]

18 hours ago, Defender_2600 said:

 

I would just suggest to consider the real pixel aspect ratio so that, as far as possible, this graphics do not look wide on real hardware. And again, I think a good compromise is 16 horizontal x 32 vertical (the same height as the arcade version).

 

 

 

 

The C64, I think, had the same thing for three color sprites, while monochrome was 16x16 perfect square pixels.

[Jinks]

Sounds good . Thanks!

[Synthpopalooza]

Will try to do more soon ...

[Giles N]

So this:

 

Would appear like this:

 

 

Edited October 6, 2019 by Giles N

[Giles N]

23 hours ago, Jaden (JRH) said:

I'll probably have to redraw those sprites I did, now that there's a guide to 7800 graphics.

BTW has programming actually started yet? I have some minor programming knowledge. So, I might be able to help. This is a project that I would definitely love to see completed. So, I want to help as much as I can.

I remember doing some stuff like this back decades ago.

 

Your drawings were good, and we want you around.

[Synthpopalooza]

Yes.  Low res on 7800 leaves a 2 to 1 aspect ratio.

[Giles N]

Just now, Synthpopalooza said:

Yes.  Low res on 7800 leaves a 2 to 1 aspect ratio.

Both on sprites and background/screen-graphics, or only sprites? (If put in 160 mode)?