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  • Documentation for SP1 for Z88DK?(I was going to post in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=11729"]the other thread[/URL], so if a mod thinks this should go…

    ... [/COLOR]

    #endasm
    [/code]

    The graphics above ... like this:

    [code]
    ABX
    ABX
    ABX
    [/code]

    The bottom row ... drawn unless the sprite is shifted vertically downward enough (s-& ...
    Alcoholics Anonymous Alcoholics Anonymous November 2013 Development
  • Documentation for SP1 for Z88DK?(I was going to post in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=11729"]the other thread[/URL], so if a mod thinks this should go…

    ... this:

    [code]
    sp1_Invalidate((struct sp1_Rect *)( ... s = struct sp1_ss *
    [/code]

    The sprite's ... the sprite image is shifted within the character ... to:

    [code]
    sp1_IterateUpdateRect((struct sp1_Rect *)(s ...
    Alcoholics Anonymous Alcoholics Anonymous November 2013 Development
  • Small demo to show my sprite engine for ZX Spectrum 48KThis demo shows 13 sprites moving at 50fps totally flicker free: 12 enemies bouncing in edges and the main character, controllable with OPSA (note S …

    ... doing it like this, say[code] ;...
    pop de
    ld ... ),a
    inc l
    ;...[/code]
    i.e. store the ... /> Wow. It's exactly the code that I am thinking to ... fast routine that prints pre-shifted sprites in only 2000 cycles ...
    antoniovillena antoniovillena December 2013 Development
  • Small demo to show my sprite engine for ZX Spectrum 48KThis demo shows 13 sprites moving at 50fps totally flicker free: 12 enemies bouncing in edges and the main character, controllable with OPSA (note S …

    ... the code at first glance.[/QUOTE]

    Sprites are pre-shifted ...
    antoniovillena antoniovillena December 2013 Development
  • Small demo to show my sprite engine for ZX Spectrum 48KThis demo shows 13 sprites moving at 50fps totally flicker free: 12 enemies bouncing in edges and the main character, controllable with OPSA (note S …

    ... ]Wow. It's exactly the code that I am thinking to ... fast routine that prints pre-shifted sprites in only 2000 cycles ... ), and basically make your logic code fill out these buffers, as ...
    Hikaru Hikaru December 2013 Development
  • really dumb questionbut can I use the following line to create a udg and if so how do I call it or use it via the graphics mode? Do I need to READ something somewhere? …

    ... a valid argument?

    [CODE]1080 RESTORE 1090: READ a ... ,255,189,60,60,60[/CODE][/QUOTE]

    I'd ... "w" to lower down the alphabet?

    W+7 runs ... off the end of the alphabet, is my thinking...

    szeliga szeliga January 2014 Sinclair Basic
  • really dumb questionbut can I use the following line to create a udg and if so how do I call it or use it via the graphics mode? Do I need to READ something somewhere? …

    ... a lower letter of the alphabet would have worked (and did ... />
    [QUOTE=MatGubbins;747355]
    [code]
    ORG 65368
    UDGs ... ,0 ; D down arrow
    [/code]
    that's it, done ...
    Morkin Morkin January 2014 Sinclair Basic
  • ZX Alien BreedNot sure if this has been mentioned already (I did trawl the threads but couldn't see anything :smile: ), but I've always hankered after a Speccy Ali…

    ... back-grounds into the pre-shifted sprites, but this means there ... on. It's simple to code this, but if it slows ...
    LuMan LuMan March 2014 New game ideas
  • 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…

    ... later the FZX driver source code to indicate where to replace ... char -- the char can be shifted left so that, eg, an ...
    Alcoholics Anonymous Alcoholics Anonymous March 2014 Brand new software
  • Learning Machine Code the +2a wayHello again all, I thought I'd ask in this forum as the other categories seem less relevant. I keep re-reading the thread below with the advice given…

    ... you're meant to assemble code somewhere (and the somewhere worried ... command??

    I had shifted to the Spectrum from the ...
    sliderules sliderules April 2014 Sinclair Basic
  • ZX Alien Breed - WIPI'm sure a lot of you have seen the discussion in the New Game Ideas area about a Speccy version of the classic Amiga game Alien Breed. I've been dro…

    ... I add the up/down code they will bee-line towards ... I get the up/down code in place the aliens will ... loaded. The sprites are pre-shifted 2 pixels at a time ...
    LuMan LuMan April 2014 Announcements
  • Joystick Interfaces on +2AJust found out that my DK'Tronics joystick interface doesn't want to play with my +2A (black). The Kempston port works OK, but not the Sinclair port…

    ... you'd have to use shifted numbers in the software rather ... " type reads. (think how you code a "press any key" on ...
    guesser guesser April 2014 Hardware
  • Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…

    Strange...

    The code I posted should change the border colour every 2 seconds, going through the range of colours.

    BEEP is shifted E mode on the Z key.

    [B][I]Mark[/I][/B]
    1024MAK 1024MAK May 2014 Hardware
  • Double Dragon Remake: The Development ThreadOk guy's, so this is the new thread that will be focusing on Jim Bagley's development of the Double Dragon remake that was first proposed by myself a…

    ... 128 load even using realtime shifted sprites, baggers wanted to use ... and strive for perfection, writing code and deleting it several times ...
    Ralf Ralf June 2014 Development
  • Porting Blues Brothers CPC->ZX...just an ideaI've just watched a video of the CPC version of the Blues Brothers games by Titus [url]http://www.youtube.com/watch?v=6DOj-Ta3Ek4...Based[/url] on th…

    ... those tiles could be pre-shifted to generate the remaining 3 ... a bash at writing some code for both ways and see ...
    polomint polomint June 2014 New game ideas
  • Chloe 280SEHi all, Could somebody tell me how far this project is to being complete? [url]https://github.com/cheveron/sebasic4/wiki/Chloe-280SE[/url] Im ver…

    ... and other machines especially when Code Masters started their "pocket money ... successful machine and the Spectrum shifted a lot of third party ...
    retrogod retrogod July 2014 Development
  • SpritesYes yes, I know this has been hashed over plenty of times before, but... I have knocked up a quick tiling routine which works with my back buffer co…

    ... /Einar - really useful bit of code. I'd been going back ... a 24x16 sprite (for pre-shifted movement) and one that draws ...
    joefish joefish November 2014 Development
  • 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…

    ... like this:

    [CODE] ...
    ld (hl),255 ... pixel
    ret
    [/CODE]

    If using ... more complex:

    [CODE] ...
    rr l ; ... changes, then using "pre-shifted sprites" (that only ...
    Einar Saukas Einar Saukas December 2014 Development
  • 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…

    ... each x-direction, thus:
    [code]gsize: equ 240 ;=5*8 ... offset right by 4 bits[/code]
    The sprite is ... graphL for the left-shifted version, then shifted 4 bits right into ... version - about 350 lines of code - which probably doesn't help ...
    Battle Bunny Battle Bunny December 2014 Development
  • The Infeasible GameMy new game will be available early next year. One or two little bits to sort and then I need to play test all the levels. For now, here is a short v…

    ... in fact polished 100% machine code ;) and may be quite addictive ... /> Yep, this is 100% machine code. The tiles are scrolling 2 ... at a time (all pre shifted). It can display a maximum ...
    Mr Millside Mr Millside December 2014 Brand new software
  • Edge Grinder, how would YOU do it?I always meant to post about this and AndyC reminded me in the 'vs' thread in games. [QUOTE=AndyC;808887]The thing I love about threads like this is…

    ... (depending how fast your final code runs), and write a tile ... the screen from the pre-shifted transitional tiles as fast as ...
    joefish joefish 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…

    ... both these aspects in machine code.[/QUOTE]
    No, it's ... in a number of pre-shifted horizontal positions, aligning to the ...
    joefish joefish January 2015 Games
  • Coder creates smallest chess game for computers[URL="http://www.bbc.com/news/technology-31028787"]Interesting article[/URL] from the BBC about "A French coder has developed what is thought to be t…

    A great piece of code if you ask me.
    ... looking at big and small alphabet letters :) Probably would have to ...
    Ralf Ralf January 2015 Sinclair Miscellaneous
  • Floating Point Package Math48<br>I came across a neat little floating point package for the z80 and I'm adapting it now to work with z88dk and sdcc.&nbsp; There is an interesting…

    ... if you do.  Because the code is counting zeroes before / after ... numbers :- you add the number shifted left three places (*8) with ... the number shifted left one place (*2).
    shifted right by two places and ...
    Alcoholics Anonymous Alcoholics Anonymous June 2015 Development
  • Multiplying. Again.Is there a faster way of hl=a*32 than doing add hl,hl 6 times?<div><br></div><div>I get the feeling that working with 8 bit registers for most of it …

    ... if it was already pre-shifted left 8 times (multiplied by ...
    Einar Saukas Einar Saukas June 2015 Development
  • Hungarian notation for asm - Yes or No ?There is thing called hungarian notation - https://en.wikipedia.org/wiki/Hungarian_notation Basically it is all about using prefixed indetifier to i…

    ... point to first part of shifted 1st mask byte
    LD A,(DE) ;1st shifted byte

    SSA_M1 ... get second part of 1st shifted byte
    LD ... point to first part of shifted 2nd mask byte
    shifted 2nd mask byte
    LD A,(DE)
    ...[/code ...
    Ralf Ralf July 2015 Development
  • Buddy 0.1 demo[url="http://wischner.co.uk/downloads/app.tap"]The tape is here[/url]. Load it, then enable kempston mouse emulation, then reload it. [url="https://g…

    ... video when desktop redraw is shifted by 1 bit). But all ... few days to optimize the code because at many places there ... looks like this:

    [code]
    static window_t *main_window;
    }
    [/code]
    tstih tstih August 2015 Development
  • New NIRVANA+ feature: wide tiles!The size of each bicolor tile in [b]NIRVANA+[/b] is 2x2 characters (16x16 pixels), like this: [img]http://i60.tinypic.com/mw358y.png[/img] [i]* M…

    ... want to occupy with pre-shifted tiles. You can save on ... 'use-IX' or 'use-IY' code, to use the other registers ...
    joefish joefish September 2015 Brand new software
  • Jumping Jack-HackThe Spectrum heroes game at Revival Survival is due but it made me think about a tribute game again. Can anyone hack Imagine's Jumping Jack so that t…

    ... their tiles. Each character is shifted while printing instead of pre ... -shifted so we can have 16x16 ... Monty). I used the source code available on Jumping Jack's ...
    PROSM PROSM October 2015 Games
  • Drawing some spritesI figured I want to draw some sprites. My target was to do a 16x16 masked sprite. There's no clearing here, just drawing the sprites. My first ite…

    ... by making each of the shifted copies a different frame of ... to have separate data and code (space-wise).
    Sol_HSA Sol_HSA November 2015 Development
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Latest Posts

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