SolarGun

Homebrew Tyrian, Spring Warrior, Solargun, Asteroidx, Priest John McPuke In the Chair Chuck Sommerville Licence to Thrill #1 Robocop Making of Yar's Revenge, Blagger & Son of Blagger, Omikron: The Nomad Soul Minority Report Super Famicom: Hameln No Violin Hiki, Cosmo Gang: The Video Minority Report Super Famicom: Super Mad Champ. Posts tagged “SolarGun” Feature: More diamonds in the rough Unknown Pleasures: the best overlooked Steam games of the past week. Upload a picture. You may only upload PNG, JPG, or GIF files. Mechanical Boss, Zaragoza. Mechanical Boss is a game development company specializing in the world of e -sports. We enjoy developing esports videogames. We teach Unreal Engine 4.

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Solar Gun Optics

• How to write a simple BASIC* horizontal scrolling game (Tutorial) - How to write a simple C+asm horizontal scrolling game (Tutorial, z88dk)
  Games List 2016 (version 20160918) - Games List 2015 (version 20160124) - Games List 2014
  The Games Lists are now also on twitter: https://twitter.com/speccystuff (with screenshots)
• I like the smooth movement of the spaceship, but unfortunately the background is not easy on my eyes...

  Personal website, including the Spectrumpedia, fixes for +2A/+3 incompatibilities and SetoLOAD turbo loader
• Looks good, any chance of removing that invisible wall in the middle so that the player can risk everything to save the world.

  Bomb Munchies on WOS thread
  Download the latest version of Bomb Munchies Ver2210 4th July 2020
• Hey, is good, is psicodelic shoot ´em up, but more shots :-O
• Nice shoot 'em up. I reckon it would make a nice game for a high score challenge (492 BTW :D ) . I like the way you've done the ship movement.
  Occasionally it feels like my shots don't have any effect on some of the asteroids. Are some of them indestructible/multi-shot targets? Or could it be that there two rocks in the same place and it's only destroying one of them?
• Very smooth but I'll +1 issue with background which doesn't lessens experience!
• lol just read my last post which makes zero sense ~ should have read 'which lessens experience'
• good to see a 'demo effect' in a game, but the background pattern looks too repetitive / loop too short
• edited January 2016

  Sorry, but I find the rippling background far too distracting.
  It's a nice effect that the sprites leave decaying trails; that's not a problem since the lead sprite is re-drawn and clearly masked each time. But the changes in the background as it scrolls are too flickery, and draw attention away from the target objects.
  If the issue is how much data can be re-drawn each frame, then perhaps the background could move in sine-wave like ripples, such that a different pattern of rows are updated each frame?

  Joefish
  - IONIAN-GAMES.com -
• Good brewtime fun - 762.
  I'd prefer a starfield, but can live with the background and scrolling text, though they do give it a bit of a tech demo feel. I was going to suggest a bonus for 3 at once, but as the screen fills up that tends to be a given!
• Hi, and thanks for all the feedback!
  If I end up making a 2.0, I'll take these all into account. I have some ideas of how to make this more like an 'actual' game, with less random elements, but we'll see if I pick up on it. In the meantime, the sources are available for anyone to hack if they wish.
  A little bit of background: I've been making some 'base tech' for some time and figured that I need to make a 'whole game' next in order to get forward. A simple shmup seemed like the way to go, and while making it over the weekend (I'd estimate under 8 hours of actual work for the whole game), it did expose a few holes in my routines, like input, including joystick support.
  Audio remains to be a problem, although I could ditch the unnecessary scroller and spend all that time just playing sound every frame =)

  http://iki.fi/sol | http://iki.fi/sol/speccy/ | https://github.com/jarikomppa/speccy
  http://goo.gl/q2j0NZ - make ZX Spectrum choose your own adventure games, no programming needed (release 3)
• I've blogged a bit about the making-of and what kinds of 'cheats' I used to make the game run at 50Hz, http://sol.gfxile.net/#SPECCYVOL7:SOLARGUN

  http://iki.fi/sol | http://iki.fi/sol/speccy/ | https://github.com/jarikomppa/speccy
  http://goo.gl/q2j0NZ - make ZX Spectrum choose your own adventure games, no programming needed (release 3)
• My speccy games.
• Thanked by 1Sol_HSA
• My speccy games.
• My speccy games.
• http://iki.fi/sol | http://iki.fi/sol/speccy/ | https://github.com/jarikomppa/speccy
  http://goo.gl/q2j0NZ - make ZX Spectrum choose your own adventure games, no programming needed (release 3)
• edited March 2016

  I was reading your blog, and noticed something that I believe will not work as suggested.

  ld a, #0x39 ; 0x39xx is a rom address with lots of ff's in 48k speccy
  ld i, a ; set i
  ld hl, #0xffff
  ld (hl), #0xc9 ; 'ret'. Should be reti, but that's 2 bytes, and we aint got room for that.
  im 2 ; interrupt mode 2, which should now hop to 0xffff which has our ret instruction.

  
  This will not work, because according to Z80 Manual, you have to re-enable interrupts inside the interrupt handler routine. So a simple RET (or RETI) won't cut it.
  

  From Z80 Manual, Page 18
  Section 'Interrupt Response'
  sub-section 'Interrupt Enable/Disable'
  The EI instruction sets both IFF1 and IFF2 to the enable state. When the CPU accepts a maskable interrupt, both IFF1 and IFF2 are automatically reset, inhibiting further interrupts until the programmer issues a new El instruction.

  
  If you don't ever use HALT instruction, it will 'appear' that it's working, but it's not, because interrupts will remain disabled after the first time the handler runs.
  If you use a HALT instruction (to sync with the screen refresh), it will lockup forever, since interrupt handler never enabled interrupts (EI) before returning, hence HALT will wait forever for interrupts to be enabled again.

• If you use a HALT instruction (to sync with the screen refresh), it will lockup forever, since interrupt handler never enabled interrupts (EI) before returning, hence HALT will wait forever for interrupts to be enabled again.

  
  I EI just before HALT, otherwise keep the interrupts disabled.
  

  http://iki.fi/sol | http://iki.fi/sol/speccy/ | https://github.com/jarikomppa/speccy
  http://goo.gl/q2j0NZ - make ZX Spectrum choose your own adventure games, no programming needed (release 3)
• I think the main programme will do something like this:
  ... Kio !

• If you use a HALT instruction (to sync with the screen refresh), it will lockup forever, since interrupt handler never enabled interrupts (EI) before returning, hence HALT will wait forever for interrupts to be enabled again.

  
  I EI just before HALT, otherwise keep the interrupts disabled.

  
  Ok, with that extra condition it will work.
  However, if you are managing 50Hz frames, it should be exactly the same, so enable (EI) inside interrupt handler, or just before HALT. But this way you can use the #FF address table and RET hack.
  
• RMartins - it's after 5pm in every time zone, which officially means you're 'talking shop' - the forfeit for which is that you have to participate in the HI-SCORE CHALLENGE
  :-p

• RMartins - it's after 5pm in every time zone, which officially means you're 'talking shop' - the forfeit for which is that you have to participate in the HI-SCORE CHALLENGE

  HeHeHe......with screenshots.. otherwise a random number could be typed in and annoy the competitors....
  

  Bomb Munchies on WOS thread
  Download the latest version of Bomb Munchies Ver2210 4th July 2020
• edited March 2016

  I tried it, but I can't participate in a Hi-Score contest.
  I have to finish my own game in time for the ZX-DEV-2015 contest deadline.