Elite clone for Arduboy?

#1

Is it possible to make an elite clone on the Arduboy/has anything similar been done? If it were to be attempted it would obviously have to be a severe downgrade from the real game, as the arduboy only has about half of the processing power and memory of a commodore 64, but perhaps something similar can be accomplished. I do not have the programming skill to even attempt this yet, but I still think the idea is interesting.

EDIT: It has half the ram and flash memory but more processing power. My bad. :slight_smile:

(Scott R) #2

Evade 2 and Star Honour may fit your tastes


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(Boti Kis) #3

Arduboy has a lot more processing power (C64 with ~1 mhz vs arduboy with 8/16 mhz - the difference is more in reallity) but far less ram (c64 with 64 kb arduboy with 2,5 kb).

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(Pharap) #4

I know @Botisaurus already mentioned the specs,
but he missed ‘ROM’, so here’s some bonus info:

Spec Arduboy C64
CPU Model ATmega32u4 MOS 6510
CPU Frequency ~16 Mhz ~1 Mhz
ROM 32 KB 20 KB
RAM 2.5 KB 64 KB
‘GPU’ None MOS VIC-II
Buttons 6 Many

That said, an Elite-like is probably doable.

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#5

Ah yeah I think you’re right about that.

#6

Yeah, I’m thinking that what I’m describing would kind of be the child of those two games.

#7

Yeah I added a note to the post correcting this. Silly mistake on my part!

(Stephane Hockenhull) #8

It’s even worse when considering that most common 6502 instructions are 3-6 cycles vs 1-2 cycles for the AVR and it takes about half the instructions for an AVR to do the same work thanks to the number of registers. And the AVR has a hardware multiplier in 2 cycles.

So on top of a 16x clock rate there’s about 6x work done for the same clock (even more when lots of multiplications are involved).

You’d need a C64 running at about 100Mhz to keep up when it comes to pure math :smiley:

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(Simon) #9

From memory, the C64 had support for ‘hardware’ sprites which would claw back some of those specs when comparing with other devices.

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#10

Speed isn’t a concern. It’s PROGMEM that’s the issue. the 6502 also has single byte instructions which reduce code size. AVR instructions are two bytes at least.

I think a downgraded version of Elite is doable in some way.

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#11

Okay, I suppose I’ll have to take it up as a project then! A long term goal to try and achieve as I get better with coding. Thanks!

(Pharap) #12

That’s true of any instruction sets though.

ARM, x86, AVR, 6502 et cetera all have very different performance characteristics,
even without taking vector operations into account.


That’s why I made sure to add ‘GPU’ to the list.
It did indeed have hardware sprite support.


If you’ve never done any programming before then it’s going to be quite a while before you can manage an elite-like (unless you’re particularly good at 3D geometry and maths).

By the way, you can reply to multiple people at once,
either by using @name (e.g. @alt_f) to ‘mention’ them,
or by highlighting which part of a post you’re replying to and pressing the ‘Quote’ button the appears,
which will insert a quote block into your reply, like the one I just did of your post.

#13

Ah okay thank you, I didn’t realize I could @ people! Also, I understand that it will be a while before I can even attempt it, but hopefully I’ll have enough practice before fall to start to put together a proof of concept or something. I figure it’s probably a good idea to have a long term goal set anyway, something to work up to.

(Pharap) #14

If you have no prior experience,
start with some very simple games like noughts & crosses.

For an Elite-like the bigger challenge is actually the 3D geometry and rendering,
and being able to optimise it adequately.

At a minimum you’d need to know about vectors, matrices, affine transformations, the process of mapping coordinate spaces (e.g. converting world coordinates to camera coordinates with a projection matrix) and culling (i.e. not rendering what you can’t see).

Don’t get me wrong, an Elite-like is possible,
but it’s say it’s quite a difficult project if you’ve never done any 3D rendering before.
(Even more difficult if you’ve never done any programming before.)
You’d need a fair bit of knowledge to be able to pull it off.

#15

Yes of course, it’ll be a long while before I can even attempt 3d graphics or anything like that.

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