Spectrum Computing

I knew WASD would kill everyone lol. But i was brand new and the keys seemed easier to get than QZIP or something else. I had intended to make a few options for controls but ran out of memory space :[ If you need a really small routine to redefine and read keys, I suggest DEFKEY . The documentation...

TAP file for this game is available on Itch Io https://retrocodertv.itch.io/spikie-goes-skiing-zx.

Also hoping it will be added to the database here, so that I can link to it from my channel in due course

Looks great gonna try out a bunch of these homebrews in my stream later this evening

Thank you for playing the game and finding the bug. Please do let me know here, or by PM whichever you prefer. If it is the one about when you die on Ski Slope and restart from there, I am now aware of it and gonna fix it tonight on stream :D When I got run over while crossing the road, it left my ...

Andre Leao wrote: ↑Wed Sep 16, 2020 3:39 pm WASD for the keys?

Sorry my dude! (Auto reported to naughty corner!)

Not a bad game and very playable! Good job! I found a bug while playing so let me know if you're needing bugs to be reported at this stage. Thank you for playing the game and finding the bug. Please do let me know here, or by PM whichever you prefer. If it is the one about when you die on Ski Slope...

Nice work for your first game, hope you had fun coding it.. :) Quite "rough and ready" (early Speccy style) but fun to play. I noticed if you die on the ski section it starts the next game there, not sure if that was intentional? I think what makes that section tricky is the 'twitchy' con...

This is extremely good for a first game. The Skiing part is impossible! Do you have to go through all the flags? I struggled a bit with WASD and would've preferred QAOP. Well done, you've made a game more playable than Kosmic Kanga on your first attempt! You don't have to go through the flags, but ...

Thank you to everyone with kind words, also those giving constructive criticism are much appreciated

Hi guys, had to go to work...

I knew WASD would kill everyone lol. But i was brand new and the keys seemed easier to get than QZIP or something else. I had intended to make a few options for controls but ran out of memory space :[

This is nice to see. The frogger style road section is a bit easier than the 'original', and the skiiing section is very hard to control. Maybe that's what skiiing is really like. Sending you a PM. At the danger of sounding like a noob. My reply to your PM is stuck in my outbox on the website. Not ...

haha Thanks for the feedback. I did struggle at first with the road being either too hard or too easy. But actually now it will increase through about 10 different difficulties in road (every time you go past 'finish' in ski level , road gets harder). I should probably start it from slightly harder ...

Hi everyone, I learned a lot from all of you guys during my first steps into assembly language coding. I even set up a Twitch and YouTube channel called RetroCoder TV , and have some subscribers and followers etc it is growing very nicely. After a couple of failed attempts to make a complete game (n...

Regarding the bugs you mention: A) This downwards notch when the sprite reaches the edge of the screen is because when you increment HL to get to the next byte of the screen, it will not wrap to the start of the row but will instead move down a row. To prevent these glitches, you either need to wri...

Thanks everyone :oops: Talking about "encapsulation", i think this is the word I am looking for. That is what I was struggling with compared to other languages. But I am getting used to it now. For example, just a moment ago I realised the sprite drawing and deleting logic should go to its...

Thank you very much for that. And yes it just seems to make sense to me to try to split things into smaller files, so that I can reuse them as much (and easily) as possible. I'm certainly not really a 'dev' , although I have been trying to learn it for many years but normally things like family and ...

Since joining I have been asking lots of questions (some more silly than others), but your help has helped me massively. I've been working away with the knowledge you have given me, and already made good progress in some games I am developing for the original Spectrum (just a pet project, I want to ...

Just for the record, and in case any other poor soul is having a similar problem in the future. I solved the number of vehicle variants as follows. Instead of 'AND 2' to get the value to be between 0-2. I needed to use 'AND %00000011'. Otherwise, as stated above, the only possible outcomes from AND ...

As far as I could tell, 'call random' gives me a number 00-ff in a, then I do AND 2 (which I am hopeing changes a to equal 0,1,2 -for some reason it isn't ever 1) You have to think in binary. 2 has the bit pattern 0010, so ANDing any value with 2 can only ever return the values 0 or 2. This must be...

I get that it converts all bits to 0 unless both compared bytes had that bit as 1. But why 31, to get "first 8k of ROM"? i don't get it. The masked value then gets passed into H, which is the high byte of the address. So, it is effectively limited to a range of 0–$1f. The full address wil...

thank you so much dude. I get it now :D (Sadly that part was glossed over in the books, unless I somehow missed the detailed explanations) Well, now I know that the AND was being used as I thought it was, then i just have to try to figure out why my own spawner function is not seeming random, and is...

a) does this have bias on larger numbers (ie. if a>=31; AND 31 would always equal 31 ???)? No. A logical AND operates on individual bits. The result of ANDing two bits is 1 if and only if both of the pair of bits are 1. %00110001 (= 49 decimal) AND %00000111 (= 7 decimal) ========================= ...

I get that it converts all bits to 0 unless both compared bytes had that bit as 1. But why 31, to get "first 8k of ROM"? i don't get it. I have windows Calculator set to programmers already , so I've been looking at many numbers (including these) in base2, base10 and base16 simultaneously,...

Hi all. I've made lots of progress in my z80 asm coding adventure. One thing that I am slightly confused about still (even after reading two books fully several times over) is the use of 'AND n' as a way to "keep a value within n". I completely understand using 'AND %00000111' for example ...

Of course I am new and cannot comment on proper formatting, but just thought I would let you know something I found out recently.

I am now using VSCode. and I can highlight as many lines as I want with the mouse and press tab, and it just works . I'm sure you already new this , but just in case :d