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Forum: Coders. Contest Today, 00:14
Replies: 722
Views: 43,125
Posted By roondar
This'll be my only addition to this off-topic...

This'll be my only addition to this off-topic part, but I simply have to ask: do you have a 4 channel version of that mod as well?

I'd love to hear it :)
Forum: Coders. General Yesterday, 23:45
Replies: 210
Views: 20,621
Posted By roondar
The Amiga was a great machine for games. ...

The Amiga was a great machine for games.

That the 16 bit consoles turned out to do better at arcade ports should not surprise anyone considering they where released 3 to 5 years after the original...
Forum: Nostalgia & memories Yesterday, 23:23
Replies: 70
Views: 3,939
Posted By roondar
I've personally never noted that much of a...

I've personally never noted that much of a difference between WinUAE and real Amiga audio output. With that in mind, I found a YouTube channel a while back that records music of real Amiga's and puts...
Forum: Nostalgia & memories 14 February 2019, 13:13
Replies: 70
Views: 3,939
Posted By roondar
If we're going to talk mathematical certainties...

If we're going to talk mathematical certainties and audio, there are at least three things we really have to keep in mind. And I feel these things are glossed over far too easily in any discussion...
Forum: Coders. Contest 07 February 2019, 00:37
Replies: 722
Views: 43,125
Posted By roondar
Rewriting code is one of those things... Never...

Rewriting code is one of those things... Never fun, but I have found the end result usually makes me happier than leaving it as is.

It's just the whole "why didn't I think this through/why didn't...
Forum: Coders. Contest 03 February 2019, 23:41
Replies: 722
Views: 43,125
Posted By roondar
Ooooh, there be DRAGONS here! Nice :)

Ooooh, there be DRAGONS here! Nice :)
Forum: Coders. Contest 28 January 2019, 19:20
Replies: 722
Views: 43,125
Posted By roondar
I hadn't thought of it like that. It does make...

I hadn't thought of it like that. It does make sense though, the Amiga was hyped to death back in the day in magazines and such and there were all sorts of strange claims about what it could or...
Forum: Coders. General 28 January 2019, 19:08
Replies: 18
Views: 831
Posted By roondar
Personally I think it's more likely due to the...

Personally I think it's more likely due to the game being a port from the Mega Drive, which supports 64 colours on screen (if you don't want to use tricks), keeping the number identical allows for...
Forum: Coders. General 28 January 2019, 17:50
Replies: 18
Views: 831
Posted By roondar
Thanks for moving the thread! Now back to...

Thanks for moving the thread!

Now back to the (by now on topic :)) discussion:

It occurs to me that there may be a way to get a better result than I've been guessing. If the 68030 we're talking...
Forum: Coders. General 28 January 2019, 13:33
Replies: 18
Views: 831
Posted By roondar
That may have been my fault for musing about the...

That may have been my fault for musing about the possibilities. Apologies for getting the thread so far off topic!

However, I do find the discussion of these technical merits fun/interesting so I...
Forum: Coders. Contest 28 January 2019, 02:46
Replies: 722
Views: 43,125
Posted By roondar
Love the new video, it really shows off that the...

Love the new video, it really shows off that the game will be nice and busy :)

As for the A1200 vs A500 stuff, I've always been surprised at just how many people don't grasp that the 68020+2MB...
Forum: Coders. General 28 January 2019, 02:35
Replies: 18
Views: 831
Posted By roondar
Before I continue with my reply, I do want to...

Before I continue with my reply, I do want to make sure something is understood - when I am stating that OCS/ECS machines can't do Aladdin 'as is' and need to do significant cut-downs, I am mostly...
Forum: News 27 January 2019, 12:31
Replies: 20
Views: 4,299
Posted By roondar
Of course it is. It just requires you to be...

Of course it is. It just requires you to be careful and may involve cutting back on numbers of objects on screen etc, but it is possible (though I'll admit it may end up with a fairly bare bones...
Forum: Retrogaming General Discussion 27 January 2019, 12:29
Replies: 17
Views: 736
Posted By roondar
I've heard it say that one of the unavoidable...

I've heard it say that one of the unavoidable system killers is the glue that holds both halves of the chip packages together eventually failing, allowing air and dust into the chips (which will kill...
Forum: Coders. General 27 January 2019, 12:26
Replies: 18
Views: 831
Posted By roondar
Not without significant cutbacks. Case in...

Not without significant cutbacks.

Case in point, the Superfrog/Assassin engine only shows layer instead of two, loses you half the colours and has (compared to Aladdin) very little in the way of...
Forum: Coders. General 27 January 2019, 02:09
Replies: 18
Views: 831
Posted By roondar
Apart from the size of blits allowed in one blit,...

Apart from the size of blits allowed in one blit, the Blitter is unchanged from OCS to ECS to AGA.

However, AGA can use faster graphics fetches from memory (4x the speed of OCS). Aladdin uses this...
Forum: OT - General 25 January 2019, 17:55
Replies: 15
Views: 1,001
Posted By roondar
Something similar to article 11 and 13 is bound...

Something similar to article 11 and 13 is bound to be made into law for most countries eventually. The people behind these ideas are not EU politicians, but big content owning companies (including...
Forum: Coders. General 25 January 2019, 15:27
Replies: 18
Views: 831
Posted By roondar
Aladdin AGA - possible to run on ECS?

It would be interesting to see an ECS version of Aladdin and how it would look.

The AGA version runs in 64 colour mode and uses the Blitter to move the background layer (and uses the wider AGA...
Forum: Coders. Asm / Hardware 24 January 2019, 00:45
Replies: 39
Views: 1,593
Posted By roondar
It’s certainly possible I misunderstood. I got...

It’s certainly possible I misunderstood. I got the 16 reads from your statement that you could make the player bullets a 4x4 grid.


I agree this can help, but only to a point. If the hit box...
Forum: Coders. Asm / Hardware 24 January 2019, 00:31
Replies: 20
Views: 1,027
Posted By roondar
No, the problem occurs when the CPU writes to...

No, the problem occurs when the CPU writes to copjmp while the Copper is waiting and the Blitter is running.

Using the Copper to write to copjmp is always safe.
Forum: Coders. Asm / Hardware 23 January 2019, 18:06
Replies: 39
Views: 1,593
Posted By roondar
Making the player bullets bigger to compensate...

Making the player bullets bigger to compensate simply moves the problem one step. Instead of 4 writes and 4 reads you're suggesting 1 write and 16 reads. Surely you can see why this is not optimal? ...
Forum: Coders. Asm / Hardware 23 January 2019, 15:35
Replies: 39
Views: 1,593
Posted By roondar
I agree my example can be optimised a bit, but...

I agree my example can be optimised a bit, but it's not that relevant (nor always easy - you might need those registers you wish to use elsewhere and a power of two grid limits you in other ways even...
Forum: Coders. Asm / Hardware 23 January 2019, 13:11
Replies: 20
Views: 1,027
Posted By roondar
Right and I had misread what you did there. It's...

Right and I had misread what you did there. It's a rather interesting idea to have a 'master' copper list in COP1LC and a 'frame specific' one in COP2LC. Doing things this way does prevent a number...
Forum: Coders. Asm / Hardware 23 January 2019, 13:04
Replies: 39
Views: 1,593
Posted By roondar
The problem with more complicated systems for...

The problem with more complicated systems for collision detection is that you do fewer checks, but the checks themselves become more expensive. It all depends on how complicated each check and how...
Forum: Coders. Asm / Hardware 23 January 2019, 12:21
Replies: 20
Views: 1,027
Posted By roondar
Yes, that'll work. It's probably how I'd do it...

Yes, that'll work. It's probably how I'd do it (unless the difference between lists is huge, then I'd prefer simply having to different lists in memory).


That basic idea will work, but do note...
Forum: Retrogaming General Discussion 23 January 2019, 00:19
Replies: 53
Views: 2,297
Posted By roondar
I think the main problem with 'in your face'...

I think the main problem with 'in your face' parallax designs is colour choices that are too 'bright'. A (slightly) subdued background is much easier on the eyes, IMHO.
Forum: Coders. Asm / Hardware 23 January 2019, 00:12
Replies: 20
Views: 1,027
Posted By roondar
I'm not sure what you wish to achieve here, but...

I'm not sure what you wish to achieve here, but it is indeed possible to use $1fe as a Copper NOP and change it to be something else later dynamically.

Regarding a 'better way', that would depend...
Forum: Coders. Asm / Hardware 22 January 2019, 16:47
Replies: 39
Views: 1,593
Posted By roondar
By the way, I assumed you had access to the NDK...

By the way, I assumed you had access to the NDK for the address locations of the CIA registers. If not I can create a version that doesn't need the include file.

As for collisions every other...
Forum: Coders. Asm / Hardware 22 January 2019, 12:54
Replies: 39
Views: 1,593
Posted By roondar
You can use the CIA timers to get a very accurate...

You can use the CIA timers to get a very accurate recording of how long something takes (do make sure you use a free one though, if you use a mod player and/or a keyboard reading routine some of them...
Forum: Coders. Asm / Hardware 21 January 2019, 14:39
Replies: 39
Views: 1,593
Posted By roondar
There are several hardware based ways to speed up...

There are several hardware based ways to speed up collision detection, but they all carry significant drawbacks (not in the least that they tend to be 100% pixel perfect, which is not usually what...
Forum: Nostalgia & memories 20 January 2019, 18:24
Replies: 1
Views: 352
Posted By roondar
This may surprise you, but it doesn't really...

This may surprise you, but it doesn't really matter (if both assume say a 320x256 screen).

The number of sprites you can show is equal regardless of screenmode* and the extra DMA cycles used by...
Forum: Amiga scene 19 January 2019, 23:27
Replies: 199
Views: 20,887
Posted By roondar
I love the design of that boss/barrier thing at...

I love the design of that boss/barrier thing at the end too. And the extra parallax is good stuff.

This is beginning to look like something rather special, keep it up!
Forum: Retrogaming General Discussion 18 January 2019, 11:50
Replies: 23
Views: 1,170
Posted By roondar
I have to vote Super Stardust here, I played that...

I have to vote Super Stardust here, I played that game to death - loved it :)

Not a dig against Stardust, it's a very good game. But I simply liked the sequel better.
Forum: Coders. Contest 17 January 2019, 00:16
Replies: 722
Views: 43,125
Posted By roondar
On the channel thing: it's just a guess, but if...

On the channel thing: it's just a guess, but if McGeezer is using the Protracker replay routine with sound effects support by PHX - that routine allows sound effects to be limited to play back only...
Forum: Retrogaming General Discussion 16 January 2019, 22:38
Replies: 53
Views: 2,297
Posted By roondar
So, err, you're right :D I should've read...

So, err, you're right :D

I should've read the specs better. The MD has two layers and the priorities you can set only influence how sprites interact with the layer, not how the layers interact as...
Forum: Retrogaming General Discussion 16 January 2019, 19:13
Replies: 53
Views: 2,297
Posted By roondar
True, scrolling (or stopping the scroll of) extra...

True, scrolling (or stopping the scroll of) extra playfields does cost extra bandwidth. But it's still less expensive than masking the bitplanes to create the layers. Plus, the only game having more...
Forum: Retrogaming General Discussion 16 January 2019, 01:34
Replies: 53
Views: 2,297
Posted By roondar
Basically, extra layers (other then Dual...

Basically, extra layers (other then Dual Playfield) can be done in three ways: brute forcing it using the blitter/cpu, using a sprite layer or making use of the way bitplanes work. The former two...
Forum: Amiga scene 15 January 2019, 21:51
Replies: 215
Views: 23,981
Posted By roondar
I like Bob the best.

I like Bob the best.
Forum: Coders. Asm / Hardware 15 January 2019, 21:27
Replies: 19
Views: 1,494
Posted By roondar
The fault is entirely mine, I worded my reply...

The fault is entirely mine, I worded my reply poorly.

I tested only a few combinations (AD & ABCD) to be exact. These use all available cycles even at the start and they work. It obviously wasn’t...
Forum: Nostalgia & memories 15 January 2019, 12:42
Replies: 70
Views: 3,939
Posted By roondar
I should add here that I love the experience of...

I should add here that I love the experience of playing a record and feel it's a wonderful way to get 'closer' to the act of playing back music (the sheer physicality of seeing the needle move and...
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