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<1…11121314151617…34>
  • 64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…

    ... than bytes.
    [*]The "big pixel" graphic is unpacked once into ... br /> ;sqxel = 4*4 bit/pixel square
    ;so a normal ... br />
    spritedata: ;includes 4-pixel blank border, moves in 4 ... 240 ;=5*8*5 =5 rows*8 bytes*5 squares
    Battle Bunny Battle Bunny December 2014 Development
  • FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…

    ... /> * [B]moved to 16-bit pixel coordinates[/B] to accommodate hi ... that it fits the given pixel width exactly. Indicate error if ... that it fits the given pixel width exactly. Indicate error if ... purpose

    0 z80 jump instruction (195)
    1..2 ...
    Alcoholics Anonymous Alcoholics Anonymous January 2015 Brand new software
  • FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…

    ... to apply attributes in every pixel row then, which will slow ... about the upper and bottom rows, just the normal one. (or ...
    Timmy Timmy January 2015 Brand new software
  • FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…

    ... apply colour on every pixel row which would halve ... average once every 8 pixel rows. The code is doing ... attributes to the first pixel row and then computing ... to select between per-pixel and per-square colouring. ... bit can mean do per-pixel colouring, eg.
    < ...
    Alcoholics Anonymous Alcoholics Anonymous January 2015 Brand new software
  • Simple sprite inertiaDoes anyone have or can anyone point me to any good examples of sprite inertia (in assembly)? I'm not after anything vector related, just simple x,y…

    ... . Your sprite coordinates have sub-pixel accuracy, you just shift right ... or 6 bits of sub-pixel accuracy. That means that pixel_x ... value representing gravity. When you jump, there's a controlled negative ... the player is pressing the jump key and get's decreased ...
    na_th_an na_th_an January 2015 Development
  • Horace you smooth mover!Just wondered, was Horace the first character to move smoothly around the screen - rather than in a blocky, character space by character space fashio…

    ... think of what Horace in 'Jump' by Madonna might be like ... /> ...were he actually moves pixel by pixel with some momentum but the ...
    dmsmith dmsmith January 2015 Games
  • More SpecBAS funHere's a neat little effect I lifted from a thread about displaylists and stuff from an Amiga forum - although SpecBAS has no hardware to assist, it …

    ... 320 characters, each representing a pixel which we can use later ... loop around for all the rows and then wait for the ...
    Dunny Dunny March 2015 Sinclair Basic
  • Scrolling colourful graphicsHi,<br>I'm experimenting with scrolling colourful graphics. I'm keeping 8 pixel empty gap between colourful blocks to avoid colour clash.<br><br>But …

    ... , you're using a one-pixel scroll, your objects can actually ... occupy one pixel of that empty leading square ... . For a two-pixel scroll (presumably pre-shifted) it ... 's time for everything to jump a whole character again. You ...
    joefish joefish June 2015 Development
  • Jetset Willy 2015 - Bug Fixed EditionLots of minor fixes to the original without distracting or modifying it to any great extent. Take a look at the link (with screenshots etc) to see:<b…

    In JSWII if you  jump from the top of Dr. ... you don't die, you jump above the spikes and the ... the spikes simply had a pixel moved down. In original JSW ... JSW released without that extra pixel height on the fire cells ...
    dm_boozefreek dm_boozefreek June 2015 Brand new software
  • TV Pal, odd and even framesI have been researching, but haven't found any real interesting information on this subject, so far. What I mean is, since TV PAL signal is interl…

    ... 't actually have enough distinct rows of dots in the display ... , but only from every other pixel.

    Compare that to ...
    joefish joefish August 2015 Development
  • Peeking the contents on screen? How?You will have to forgive me for growing up on the C64, but I know I can peek the location of a character (1024 is top left from memory) and the peek …

    ... for the first pixel line of the first 8 rows of charactes ... . Then it does all the second pixel lines ... done all 8 pixel rows of all 8 character rows.

    Then ... a character (or, technically, the pixel data drawn in that character ...
    joefish joefish August 2015 Sinclair Basic
  • Hop'n'FrogA very small frogger-inspired arcade game made with AGD Guide your frogs to their home. Avoid enemies by jumping over them, by sneaking below them …

    I love the design and the way color clash is avoided in this (and few recent) games. It makes me wonder if 8 pixel jump can be avoided by using some (carefully prepared) frames in between or even using BIFROST (perfect for vertically moving gfx).
    Maziacs Maziacs August 2015 Brand new software
  • PUSH scrollers 3[url=https://drive.google.com/file/d/0B-KEeni1WXmoYk9Dek1zVnd6Rk0/view?usp=sharing]CATS - Faith edition (example)[/url] Hello and welcome to the w…

    ... pick a pixel position anywhere in the level map and jump to ...
    joefish joefish October 2015 Development
  • Ninjaman 8-way scrolling 50Hz multicolour demo :-)Here's a demo I've been working on for a while. The goal was to make the best scrolling routine possible on a humble 48K ZX Spectrum. I was origin…

    ... table and diverting un-needed pixel rows into the ROM space. That ... addressing to do the 8-pixel horizontal step. It draws either ... 's filling the next two rows just ahead of the raster ... two rows ahead. Very clever, though it is leaving a single pixel ...
    joefish joefish October 2015 Development
  • Best and worst jumping in a gameI've played Dynanmite Dan for the first time. I'm a bit disappointed that the jumping felt rubbish and out of place. Its just a diagonal up and strai…

    ... for similar reasons. The jump arc is too diagonal ... /> I did like the jump in the Willy games and ... one of the best jump actions was in ... />
    Also the jump in Technician Ted was pretty ... made even better by the pixel perfect collision detection.
    Retrobrothers Retrobrothers November 2015 Games
  • Best and worst jumping in a gameI've played Dynanmite Dan for the first time. I'm a bit disappointed that the jumping felt rubbish and out of place. Its just a diagonal up and strai…

    ... I thought, I hate the pixel perfect requirement. [/quote]
    who ... ability to change direction mid-jump is a good imo
    def chris def chris November 2015 Games
  • 3x64 colorsWhile working on the [url="https://github.com/jarikomppa/img2spec"]image spectrumizer[/url] I googled about different "trick modes" people have done …

    ... differently coloured screens on alternate pixel rows, to try and get better ...
    joefish joefish December 2015 Development
  • 3x64 colorsWhile working on the [url="https://github.com/jarikomppa/img2spec"]image spectrumizer[/url] I googled about different "trick modes" people have done …

    ... differently coloured screens on alternate pixel rows, to try and get better ...
    Sol_HSA Sol_HSA December 2015 Development
  • Spectrum Screen RAM layoutHi there The spectrum screen layout is rather odd. It seems to be arranged into 3 256 byte groups. If I have an x (horizontal) coordinate (from…

    ... top pixel row of each of the 8 rows of ... until all 8 pixel rows of all 8 rows characters are done ... 256, to move down one pixel row.

    ... when sprites move with pixel precision that things get ... at least copy two pixel rows of a sprite with ...
    joefish joefish December 2015 Development
  • Can anyone show a slight diagram of how pokes work in a jet set willy game for example?I know its kind of something to do with machine code and Memory addresses etc but would be nice to see a youtube video or some drawings etc ? .Many t…

    ... ;B counts the number of rows
    loop: ; label name
    jump back to loop if it ...
    GReW GReW January 2016 Games
  • People that can complete Jet Set WillyHi All I had the following posted on my youTube walk-through of Jet Set Willy: "for those that can complete Jet Set Willy i salute, you truly are…

    ... simple stuff like timing a jump so you clip the edge ... work out where as the pixel perfect jumps are usually obvious ...
    saberman saberman January 2016 Games
  • The Emperor's New GamesAre there any Spectrum games where you just don't get what the fuss is about? I mean games that are almost universally praised, but which strike you…

    ... to require at least one pixel-perfect precise jump.
    Morkin Morkin February 2016 Games
  • 1986-2016.I'm early, but I'm tired of 1985. So here's the annual thirty-years after topic about Speccy games.

    ... craters or hollow trunks, to jump into.
    Apparently, you must ... bit, because you need a pixel perfect position to achieve the ...
    WhenIWasCruel WhenIWasCruel February 2016 Games
  • A new emulator is in townHello, I'd like to announce a new ZX Emulator, it's Spectacol (https://github.com/bog-dan-ro/spectacol) a free (GPLv3+) emulator which currently t…

    ... of Speccy resolution, so some rows/columns of pixels are doubled ... well, hopefully someone else will jump in and do it better ...
    Blerk Blerk March 2016 Emulators
  • What were the most difficult, and pointless, games you ever played?1) Jack and the Beanstalk - incredibly difficult, a system of losing lives that seems to have designed by a certified lunatic, and no real sense of a…

    ... - Due to it's ridiculous pixel perfect jumps you had to ... that had Pick-Up and Jump assigned to same button is ...
    stupidget stupidget April 2016 Games
  • Function with push and popIm trying to see if I understand push and pop when it comes to using to pass parameters to functions: [code] LD HL,16384 LD A,5 Push AF Ld A…

    ... drawn. This is because for pixel placement on screen the engine ... depending on the exact horizontal pixel coordinate. If you need to ... eight times for the 8 pixel rows in a char. The ix ...
    Alcoholics Anonymous Alcoholics Anonymous April 2016 Development
  • P.O.W.As far as I know, a port of P.O.W. (Prisoners of War) from NHK, doesn't exist. [img]https://cld.pt/dl/download/61d19b5e-453b-489c-b17b-d3ed6fccd594/…

    ... being updated before the actual pixel data. Perhaps it can be ... scrolling in less than 8 pixel steps, which makes sense because ... one column, but update horizontal (rows) spans.

    The main ...
    RMartins RMartins June 2016 Development
  • New Game - Cap'n Rescue: ReprisalHello, I'd just like to announce my new game Cap'n Rescue: Reprisal for the ZX Spectrum is almost complete. This is the third game in the series…

    ... , it fixes it self (except jump key).
    Please fix, the ... play, is that we can jump quite high, but we are ... we can jump, which feels awkward. It seems that a pixel more ...
    RMartins RMartins July 2016 Brand new software
  • New Game - Cap'n Rescue: ReprisalHello, I'd just like to announce my new game Cap'n Rescue: Reprisal for the ZX Spectrum is almost complete. This is the third game in the series…

    ... play, is that we can jump quite high, but we are ... we can jump, which feels awkward. It seems that a pixel more ... /> Hmm, I did tweak the jump table - probably best I tweak ...
    LoadingScreech LoadingScreech July 2016 Brand new software
  • New Game - Cap'n Rescue: ReprisalHello, I'd just like to announce my new game Cap'n Rescue: Reprisal for the ZX Spectrum is almost complete. This is the third game in the series…

    ... maybe it's that extra pixel besides jump height, and we dye ...
    RMartins RMartins July 2016 Brand new software
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