Harrier Attack Reloaded

XeNoMoRPH · 08:46, 19 January 25

Chris Perver is reviving the classic Harrier Attack game but using the CPC Plus, utilizing some advanced features like sprite management that the Plus range allows.

video: https://files.fm/u/fe5n26rr82#/view/mmvq6p3jkq

Egg Master · 11:58, 19 January 25

IMO, what made Harrier Attack great was the fact that everything was rendered in "shadow" and the imagination did the rest.

XeNoMoRPH · 07:29, 12 February 25

Game is out: !!!

https://www.mimosquest.com/harrierattack.htm

McArti0 · 08:45, 12 February 25

Are these rockets Chinese from the AliExpress promotion?

50m range...

Shaun M. Neary · 12:26, 12 February 25

Quote from: McArti0 on 08:45, 12 February 25Are these rockets Chinese from the AliExpress promotion? 50m range...

Temu - Go to war like a billionaire!

To be fair, if memory serves me well, the rockets didn't have a great range in the original either.
Be interested in playing this later though

CraigsBar · 13:29, 12 February 25

Just tested this on the latest RetroVM (464 Plus configuration) and CPCEC (6128 Plus), in both cases it crashes after the beautiful loading screen.

CraigsBar · 13:31, 12 February 25

Screenshots of the crashes

McArti0 · 13:55, 12 February 25

When a CPR marked as "Amstrad Plus cartridge file for WinApe" works on WinApe it is not obligated to work on anything else.

Shaun M. Neary · 14:03, 12 February 25

Quote from: McArti0 on 13:55, 12 February 25When a CPR marked as "Amstrad Plus cartridge file for WinApe" works on WinApe it is not obligated to work on anything else.

Bit of a harsh response? He was merely providing some feedback.

I'm genuinely curious to see if it'll work on real hardware. Assuming it does as box art was made to work with a physical cartridge version.

CraigsBar · 14:51, 12 February 25

Quote from: McArti0 on 13:55, 12 February 25When a CPR marked as "Amstrad Plus cartridge file for WinApe" works on WinApe it is not obligated to work on anything else.

So a cartridge image created for one specific and very old emulator that is known to be less than accurate in certain aspects and only exists for users of one OS. Yeah because *that* Sounds like a good idea.

eto · 15:27, 12 February 25

The author is already aware and works on a fix.

Interrupt · 16:55, 12 February 25

Nice! I have vaguely fantasised about remaking this game on a standard CPC - I got as far as mocking up some screens using Mode 0 for a more interesting colour palette. The original sprite design is monochrome yet seems to evoke the reality of observing aircraft at a distance and the monochrome landscape of the Falklands well. By keeping to silhouettes for the aircraft it seemed possible to give the same impression even in Mode 0 and leave more colours for detail elsewhere. Of course, that's just a mockup and nothing like the real work of making it into a game that plays well! Maybe I'll get around to it one day

Interrupt · 17:19, 12 February 25

The author also has a write up how they modified the original to produce this... https://www.mimosquest.com/downloads/CreatingHarrierAttackReloaded.pdf

Pollo · 17:40, 12 February 25

Quote from: CraigsBar on 13:29, 12 February 25Just tested this on the latest RetroVM (464 Plus configuration) and CPCEC (6128 Plus), in both cases it crashes after the beautiful loading screen.

We should not care whether or not the game works on some specific (winape, retrovm, etc..) emulator.

What matters is if the game works on real hardware or not.

evenmore · 18:39, 12 February 25

Hi guys,
Thanks for your feedback on the crashes.
Sorry, I'm used to working with WinApe, as that's what I learned assembly language on.
I didn't realize there were more accurate emulators out there.
The crashes are may be due to the interrupts expecting the ASIC to be paged in when it is not.
I will work on this and try to get it tested on my 464+ too and let you know what happens.

CraigsBar · 22:23, 12 February 25

Quote from: evenmore on 18:39, 12 February 25Hi guys,
Thanks for your feedback on the crashes.
Sorry, I'm used to working with WinApe, as that's what I learned assembly language on.
I didn't realize there were more accurate emulators out there.
The crashes are may be due to the interrupts expecting the ASIC to be paged in when it is not.
I will work on this and try to get it tested on my 464+ too and let you know what happens.

Thanks man. If you need any testing done on real hardware or emulators running on Linux, mac, both x64 and Arm64 on each let me know.

Thanks Craig

shacpc · 09:26, 13 February 25

Quote from: evenmore on 18:39, 12 February 25Hi guys,
Thanks for your feedback on the crashes.
Sorry, I'm used to working with WinApe, as that's what I learned assembly language on.
I didn't realize there were more accurate emulators out there.
The crashes are may be due to the interrupts expecting the ASIC to be paged in when it is not.
I will work on this and try to get it tested on my 464+ too and let you know what happens.

Thank you very much for your game. Unfortunately, I have tested the game and it does not work on my CPC464+ with M4 and Gemini 1MB RAM. It loads the beautiful splash screen perfectly but then the screen becomes pixelated. I have also found that it does not work on the CPCEC emulator (@ CNGSoft ), which usually loads anything you put in it.

evenmore · 12:46, 13 February 25

Hi guys
I have hopefully fixed the issue with the crashes. My stack was occupying the same space as the ASIC when it was paged in. For some reason WinApe didn't seem to care! So hopefully it should work okay now on real hardware.
I have uploaded the fixed version it to my website www.mimosquest.com and cpcwiki.eu.

I plan to test it myself on my 464+ soon and will also be working on getting manuals printed, before creating physical cartridges for people if they want one.
Thanks once again!
Regards,
Chris

andycadley · 13:06, 13 February 25

Quote from: evenmore on 12:46, 13 February 25Hi guys
I have hopefully fixed the issue with the crashes. My stack was occupying the same space as the ASIC when it was paged in. For some reason WinApe didn't seem to care! So hopefully it should work okay now on real hardware.

WinAPE has a bad habit of treating the ASIC like a big block of RAM, so writes to any location persist. But that's not how the ASIC really behaves as it's just a small bunch of registers in that address range (some of which are duplicated IIRC)

shacpc · 13:42, 13 February 25

Quote from: evenmore on 12:46, 13 February 25Hi guys
I have hopefully fixed the issue with the crashes. My stack was occupying the same space as the ASIC when it was paged in. For some reason WinApe didn't seem to care! So hopefully it should work okay now on real hardware.
I have uploaded the fixed version it to my website www.mimosquest.com and cpcwiki.eu.

I plan to test it myself on my 464+ soon and will also be working on getting manuals printed, before creating physical cartridges for people if they want one.
Thanks once again!
Regards,
Chris

Wooow!! It's already running. An exceptional plane movement!

CraigsBar · 16:12, 13 February 25

Quote from: evenmore on 12:46, 13 February 25Hi guys
I have hopefully fixed the issue with the crashes. My stack was occupying the same space as the ASIC when it was paged in. For some reason WinApe didn't seem to care! So hopefully it should work okay now on real hardware.
I have uploaded the fixed version it to my website www.mimosquest.com and cpcwiki.eu.

I plan to test it myself on my 464+ soon and will also be working on getting manuals printed, before creating physical cartridges for people if they want one.
Thanks once again!
Regards,
Chris

Yep, Tested on both RetroVM and CPCEC, works fine on both now. WOW this is fast, I will need some more practice LOL

CraigsBar · 16:13, 13 February 25

Quote from: evenmore on 12:46, 13 February 25Hi guys
I have hopefully fixed the issue with the crashes. My stack was occupying the same space as the ASIC when it was paged in. For some reason WinApe didn't seem to care! So hopefully it should work okay now on real hardware.
I have uploaded the fixed version it to my website www.mimosquest.com and cpcwiki.eu.

I plan to test it myself on my 464+ soon and will also be working on getting manuals printed, before creating physical cartridges for people if they want one.
Thanks once again!
Regards,
Chris

Physical copies? Hell yes please!

evenmore · 18:42, 13 February 25

Thanks for your kind words. Yes, I hope to produce some cartridges for nostalgia's sake,
and to have the satisfaction of achieving something.

I asked the director of Durell if he would contribute a photo or paragraph about the original,
but he declined. He said he felt too old for this sort of thing now :/
But he wished me good luck.

eto · 20:54, 13 February 25

How do you do the cases?

evenmore · 21:01, 13 February 25

A friend on ebay, ivorlott, can flash the cartridges and also knows someone who produces the cases too.
I will design the covers on the computer and get them printed, so they can be inserted into the cases when they are ready.
Hopefully shouldn't be too difficult.

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Harrier Attack Reloaded