Spectrum Computing

All text drawing is in assembly. It would be interesting to see how long it takes with the border though.

I think the flickering is only in the gif. But I will probably do that anyway.
I'll check to make sure though.
I could do halt before any string printing to be lazy coder. Or before setting up a new screen

https://i.ibb.co/SRgFQ4D/quickadvmode.gif english font style keyboard created an array of pointers to rooms each room contains 2 pointers to description strings it worked straight away thankfully, as i had already done a very similar thing in printing a character's name. It's funny cos using assemb...

Thanks!! I'll check it out

Hi I'm trying to understand forth. If , for example there was a d&d style battle would all the information be kept on the stack or would it be allocated elsewhere?

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They look great

I watched a video of a professional game dev saying that a C buffer overrun bug cost a lot of development time on his game. In the 90's.

StanVanman wrote: ↑Fri Oct 20, 2023 1:59 pm As far as I can tell it doesn't even have support for any joysticks...

Lol ok there's no excuse then

Oh I see alternating the shadow screen,nice

What is a giga viewer? Something on the spectrum next?

Yeah a surprising number of games did this. I think movie perhaps had the cursor keys 4567 which is insane. It is confusing because making a game requires 10x the knowledge that it takes to read the keyboard properly. Maybe they tested it on joystick and the keyboard was an afterthought. If you owne...

as you want it to. the whole Forth compiler written in Forth itself, there are no hidden parts there. you can use any mechanics you like: inline, tables, 0-terminated, "or 0x80"-terminated, compressed, anything. the system doesn't care, because it doesn't need strings at all. so it is up ...

p.s.: and if i port my Z80 emulator to UrForth… oh, no. i definitely WON'T GO THAT WAY! ;-) Then you would have a game dev tool that creates a .tap file but can also create a windows executabe that runs the game within an emulator :D Without the end user realising what is going on. How does your fo...

Oh I see you're using a label and a call, to make it more 'forwards logic' like. That's good.

JP NZ is the right solution. And yes, it requires about a billion times more discipline than BASIC to avoid spaghetti code that becomes hard to follow. Welcome to assembly programming. Okay :) Yeah I was coding that way and wondering if there was any way around that. The jumping to a function inste...

The idea of the second routine's ret acting that way is something I hadn't thought about (referring to a post on the previous page by paradign shifter) If you want pseudo code of what I'm talking about a good example is just imagine two else statements. If enemy dead MakeExplosion() Else If enemy-hp...

I suppose the situation I'm thinking about is wanting to do something AND return. Whereas you can only do one or the other using basic assembly commands.

Storing the location on a stack could be risky for creating bugs?

Putting the function pointer with the menu is a good idea, I'll have to study it a bit more though

I'll give it a go when I have time, looks good from the video I saw of it.

So you have cross compilation from PC to x86 dos system and zx spectrum?

Any .tap files of demos available of the games?

i suppose thts almost like creating a new language, but might be necessary for some complicated things. The most complicated things ive ran into so far were: if keypressed is_key_pressed=1 else if is_key_pressed=1 do_action() is_key_pressed=0 endif endif which in assembly is: call read_keyboard LD A...

thats an interesting way of using the stack, might have to use that later.

I am using bytes for state flags etc. and yes the second answer is correct for those types of situations. Like the movecharacterleft the situation where i use backwards logic is: see if the option chosen is the first - then execute it, if not then see if it is the second then execute that I jp acros...

in normal languages you can do an IF statement with multiple conditions quite easily, but assembly is a bit like having the memory of a goldfish..as registers get trashed all the time. So far, I have been doing things like:testing for the opposite of what im looking for and then skipping over code i...

nice website. my attention span has been destroyed by modern technology, but I managed to read 3 reviews