Very early test with some enemies. No collision detection and no clipping yet. I shrunk the viewport a little in advance to create enough frame time for enemies, moving platforms, etc.

Just listed a Hantarex Us 250 Arcade PSU complete with Wiring Loom and Adjustment board on Ebay, ideal for restoring or building an arcade cabinet.
Check it out here ebay.co.uk/usr/nyimnyarr

Retro Game Library v1.2 is out! 🎮

🔍 New “Look up box art” button in every game
📼 Rare ZX Spectrum & ZX81 tapes now pull covers from ZXDB
🌐 “Find online” for anything else, just copy & paste the pic
💾 Smaller footprint

Free here👇
virtualjames.itch.io/retro-gaming-l…

Quick screenshot of the new layout before 💤💤

Listed a few more items on Ebay, this time Citadel Miniatures, grab yourself some #Oldhammer ebay.co.uk/usr/nyimnyarr

The little struggles... picking up coins or other things (& hence erasing the sprite correctly on all 4 buffers) when they are only partially visible at the left edge of the viewport... was pretty challenging. Also, no more preshifted tiles but on-the-fly shifting while plotting

Anybody remember Garbage Pail Kids?
I used to buy these on the way to school back in the 80's.
These are currently up for sale on Ebay with a few other items, check them out here ebay.co.uk/usr/nyimnyarr

Just listed this Ultimarc ArcadeVGA AGP 128MB 15 kHz output Graphics Card on Ebay, if you are interested you can find it here ebay.co.uk/itm/2371380916…

I've put a few more bits up on Ebay including complete sets of Garbage Pail Kids stickers, take a look here ebay.co.uk/usr/nyimnyarr

Unnamed Electrobots game (WIP) for Acorn Electron 🚫AI. Created more varied tiles and tile types. Next up: stats, enemies, moving platforms?

Success! Corrected enemy ship movement within the scanner and repositioned the small box to the centre of the scanner, items within this will appear in the main view. Next track and store objects in the world, hook up the controller so we can move about space and then hopefully on the play field.

A little more progress on my vectrex game. Finally managed to populate the scanner, not quite right as they currently only move down the screen but are supposed to move in all directions and the small box needs to be moved to be central in the scanner.

When reverse engineering was still fun... 🥹

(left: Exmon II, right: SoftICE (image from alchetron))

Coin collection is a surprisingly hard problem. Debug view shows a thin blue line as an indication of raster time. One of four hidden back buffers is also shown. I have been optimising quite a bit but I still think I may need to shrink the viewport a little to maintain 25fps

I always thought Cylon Attack (BBC Micro) would make a great Vectrex game so decided to have a go at writing a version myself. It will no doubt take me a very long time to complete as I am learning as I go but happy with progress so far.

The original game for comparison.

I have been tweaking the jump (including 'coyote time') and fall animation until it felt just right. It is (un)expectedly difficult to erase a collected coin on all 4 preshifted back buffers, at the right location and at the right time... not perfect yet!

Just put a few more items on Ebay, 3 D&D sets, Trolls in the Pantry and Squelch by Games Workshop. If you are interested you can check them out here ebay.co.uk/usr/nyimnyarr

Did you play any of Acornsoft's games back in the 80s? Which one was your favourite?

#KevinToms #Acornsoft #AcornElectron #BBCMicro #EliteGame #RetroGame #UKGames #RetroComputers #HomeComputers #Microcomputers #80sComputers #80sGames #UKComputers #UKRetro

Found some of my old 90's rave tapes while digging through the loft, shame none of my tape decks are working.
I guess it's time to order up some new drive belts.