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Search Again :: Adv Search 1000 results in 0.029s
<1234567…34>
  • z88dk+splib2 sprites question.I'm creating a game and I have several "states" for my main sprite, such as jump, facing left, facing right, etcetera. All those states require a dif…

    ... 'm using 3 enemies per screen).
    [/quote]

    ... a rectangle (usually the full screen rectangle sp_ClipStruct) so using ... column (nor the 7 blank pixel rows above each column). The sprite ... then using those addresses to set colours while in the ...
    Alcoholics Anonymous Alcoholics Anonymous September 2005 Development
  • ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…

    ... : SOURCE AND TAP OF SECOND SET OF TEST PROGRAMS[/URL] If ... URL box.

    This set of test programs is made ... several different sprite types on screen.
    2A-2C Illustrate exactly ... definition (and the blank 7 pixel rows above the first column) have ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…

    ... structs to different screen addresses, to rearrange the screen. This one is ... the make rotate table flag set so that the rotation tables ... has 7 blank pixel rows above it to accommodate vertical pixel placement. Normally ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ... -right to reduce the screen, then work down from ... is that if one pixel is set, either above, to the side, ... it's a fairly empty screen pixel-wise. I also tried ... Caped Crusader[/I] loading screen, which has a lot ... that adapt to each screen, but this simple method ...
    joefish joefish January 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…

    ... move the sprite one pixel down with respect to ... therefore needs a blank pixel row above it (and a total ... a sprite down a pixel means it now occupies one ... . By default they are set to 1, which is ... modify how each char on screen is drawn (what is done ...
    Alcoholics Anonymous Alcoholics Anonymous November 2013 Development
  • A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…

    ... equivalent to the LIB declaration above

    char ... ld bc,-10 ; vertical pixel coordinate, above screen
    ld hl,0 ... rectangle defining the full screen
    ; sprite above is clipped against ... are already set up. The asm snippet above is calling ...
    Alcoholics Anonymous Alcoholics Anonymous February 2014 Development
  • ZX-Paintbrush 2.3 publishedDear readers, Today, I published version 2.3 of ZX-Paintbrush. Inspirated by kgmcneil, I decided to follow his ideas and implemented a switchable p…

    ... draw a line on the screen with those settings (remind: colour ... [/IMG]

    As a pixel set line doesn't change already ... by drawing pixels on pixel set areas with set INK colour, e.g ... converter often produces inverted 8x8 pixel areas, you see above.
    clausjahn clausjahn September 2014 Emulators
  • endless runner project..So I'm thinking of writing a small tutorial series on writing games for the speccy in C, and figured that an endless runner would be an easy example …

    ... scrolling, clearing a window on screen, etc.

    In ... need a real 100% cleared, pixel set clean screen?
    or do i ... clear the screen?
    with a line purge as above or a ... although you could clear the screen directly, this won't communicate ...
    Alcoholics Anonymous Alcoholics Anonymous May 2017 Development
  • Drawing LinesHas anyone got any experience of coding a Bresenham line drawing algorithm on the Speccy? I've had a go and I find the algorithm has quite a few s…

    ... />
    .set6
    set 6,(hl)
    ;as above

    ;.set5 ... ...39 Z80 clocks per each pixel set in the main loop (depending ... draws directly to the Spectrum screen and avoids redundant checks when ...
    Lethargeek Lethargeek March 2019 Development
  • New Utility to Transfer Z80 Snapshot to +3 DiskSince getting a Gotek for my +3 it has been my go to machine. The biggest downside however is the lack of older games on disk format with pretty much…

    ... of screen pixel area
    -b2 @ bottom right of screen pixel area ... .

    The above work fine for most snapshots ... br /> [b]Alternate Loading Screen (-s screen.scr)[/b]
    As ... it with another compressed screen with the original loaded ...
    TomD TomD May 2019 Development
  • Stuck again! Please help meI'm in the process of making a little game, eventually it will become rather more sophisticated (I hope) but I am testing out routines one at a time.…

    ... />
    You understand that the screen is made of two parts ... screen, it looks to see what is already there. If a pixel ... ) if there is no pixel set for this pixel then it will be ... start the above process - and of course, for every pixel of the ...
    Dunny Dunny August 2019 BASIC
  • ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…

    ... animated sprites and backgrounds on screen.

    It ... small portions of the screen changes between updates. This ... br /> - #defines for colours, border(), screen address calculations have been added ... well as 7 blank pixel rows above each column must ...
    Alcoholics Anonymous Alcoholics Anonymous April 2006 Development
  • Support of other SCREEN$ formats in ZX-PaintbrushDear readers, I've already implemented a nearly complete ULAPlus support in my developing version of ZX-Paintbrush. Works fine so far. But I asked m…

    ... some of the other screen$ formats, probably those ...
    [LIST]
    [*]Standard screen$ (256x192 pixels, 32x24 attributes, standard ... bytes
    [*]ULAPlus screen$ (same as above, but with 64 extra ... 6912+64 bytes
    [*]screen$ with 256x192 pixels and ...
    clausjahn clausjahn May 2011 Emulators
  • Heist 2012 wrong loading screenThe screen currently set as loading screen for [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0002278&loadpics=3"]Heist 2012[/URL] is the gam…

    The screen currently set as loading screen for [URL="http://www.worldofspectrum. ... has finished. The real loading screen is similar to that of ...
    Metalbrain Metalbrain January 2013 Infoseek database
  • RND cyclical behaviourGood evening. I'm playing with RND function to show its cyclical behaviour, i.e. after 65536 calls to it, the next one will return the same value of …

    ... screen, pixel by pixel, and stops when it finds the same point already set ...
    mattsteel mattsteel August 2013 Sinclair Basic
  • Subtract 4 from an addressThis is a novice Z80 question really: I'm trying to vertical scroll my back buffer, but I'm not sure of the quickest way to apply an offset and mo…

    ... allow sprites to exit the screen smoothly. The area I need ... and copying it to the pixel line above. This continues for another ... to move to the line above. Which is the quickest way ...
    Atari_Jetman Atari_Jetman September 2015 Development
  • Z80onDSK now compatible with +3e with ZXMMC or similarJust updated my utility to work on Spectrums equipped with +3e ROMs and IDE storage. I've tested this with ZXMMC at the moment but don't think there …

    ... ║ 1: @16384 (top left of screen pixel area)
    ║ 2: @22511 ... (bottom right of screen pixel area)
    ║ 3: @23296- ... snapshot name is used as above)
    ║
    ║ ... code located top left of screen pixel area
    ║ ...
    TomD TomD May 2019 Sinclair Miscellaneous
  • RealspectrumCan anyone tell me why sometimes when I launch realspectrum it locks up on the welcome screen? I am running it in a DOS shell within windows 98. I'm …

    ... have one. For Audio settings, set it to 22050Hz, and no ... in mono atm). Video settings - Set frameskip to 2, and auto ... you certainly won't :). Screen modes, as above, normal rendering for both ...
    Dunny Dunny June 2002 Emulators
  • The ULA and ScreenI've asked something similar before but please bear with me. I'm trying to understand the way the screen is controlled. The ULA controls output to …

    ... the above info the ULA is built to get the screen from set ...
    Saboteur Saboteur November 2005 Hardware
  • z88dkHello. I'm an spanish user of spectrum (and naturaly of this page). I have a question. I want to start to program games with z88dk, but I need a goo…

    ... moved around the screen, like regular sprites are, to pixel precision. The ... must be 7 blank pixel rows above each sprite column unless ... as the 7 blank pixels above the next column. Only ... to simulate downward movement in pixel increments when the sprite is ...
    Alcoholics Anonymous Alcoholics Anonymous April 2006 Development
  • Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…

    ... /> ; Converts a screen pixel coord into a screen address and ;
    ; pixel position ;
    screen address from the above routine.
    [CODE ...
    Kiwi Kiwi May 2006 Development
  • Port problem with either EightyOne or FUSEA bug in EightyOne's keyboard handling has now been fixed.

    ... border before the first contended pixel to afterwards (not yet modelled ... have the first pixel of the main screen area set to 14321, and ... border from the first main pixel down, which is close to ...
    Fred Fred December 2006 Emulators
  • Reason for strange display layout?I have always wondered if there is any technical reason behind the strange layout of the display file or why did Sinclair choose to do it this way?

    ... /> ; Adjusts screen address HL to move one pixel down in the ... : Carry = moved off screen
    ; HL = moves one pixel down
    ; used ... = 25.7 cycles. The above would change a little bit ... to draw those extra blank pixel rows above and below the sprite ...
    Alcoholics Anonymous Alcoholics Anonymous May 2007 Development
  • Vector drawing routines.Anybody could point me to some sort of vector drawing package of routines, callable from BASIC? With "vector drawing" I mean to draw 2D pictures with…

    ... h,96 ; start pixel at centre of screen
    ld l,128 ... mask = leftmost pixel set
    call fill ; fill from new screen position

    ; hl = screen address
    ; b = incoming pixel mask

    Alcoholics Anonymous Alcoholics Anonymous October 2007 Development
  • help sought with first foray into machine code - pixel scrolldownI have started to code my first machine code program, a simple roadrace game. I've based it around the pixel scrolldown routine in 40 Best Machine Co…

    ... 98304 cycles for a full screen (1.4 frames). Again this ... we need to decrease BB (screen block)
    sub $08 ... pop de ; address of pixel row above becomes the destination address for ... of the screen, scrolling by more than one pixel, or moving ...
    Alcoholics Anonymous Alcoholics Anonymous February 2008 Development
  • Disappearing/appearing effectI remember doing a small routine in BASIC which could be used to cover the attributes section randomly, until all 704 characters were filled with the…

    ... "decoding" the Y-pixel value - treat the screen as a solid 6144 ... bit 15 and 14 are set then discard (the 25% waste ... will provde the inter-byte pixel to set.
    The remaining 11 ... the byte within the 3rd screen to set.

    {busy going ...
    BloodBaz BloodBaz March 2008 Sinclair Basic
  • Spectrum AssemblyHi All, Thanks for letting me in... lol Over the last couple of days I started playing my spectrum emu again and then I started thinking about lear…

    ... it. For example 0 (no pixel set). In such case you could ...
    PUSH HL

    Above routines needs to be "generated ...
    omega omega October 2008 Sinclair Miscellaneous
  • Looking for cursor routineIt's been a long time since I programmed a little bit in Basic, so I decided to create a simple cursor routine: [url]http://db.tt/SPnSdpx[/url] I k…

    ... of a proportional font on screen having set the sp to video ... a full third of the screen text with such a font ... correct pixel position, in addition to simply copying bytes to the screen ...
    gasman gasman September 2010 Sinclair Miscellaneous
  • SAM programmingHi Can anyone provide any example hello world or graphics/sprite printing style machine code routines for the SAM? I can't seem to find anything rem…

    ... following, it seems to set the vmpr to the lmpr ... , so I get my screen address starting at 0, ... working. (I want the screen at 0, a buffer at ... the value using the code above but substituting hmpr with ... /> By default is the screen pointer set to page 30?
    ...
    spud spud October 2010 Development
<1234567…34>

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