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Search Again :: Adv Search 1000 results in 0.012s
<1…21222324252627…34>
  • Snowfall effectHow do you go about creating a snowfall effect like the one in Yeti? Now don't laugh, I'm currently printing 32 UDG's of dots OVER the top of my gam…

    ... ;arrive with IX addressing x,y, return with HL ... br /> rlca ; divide x by 8 and multiply by ... .
    and 224 ; mask off bits we don't ... /> ld a,(ix+0) ; x coordinate.
    rrca ; only ...
    R-Tape R-Tape December 2014 Development
  • Snowfall effectHow do you go about creating a snowfall effect like the one in Yeti? Now don't laugh, I'm currently printing 32 UDG's of dots OVER the top of my gam…

    ... ;arrive with IX addressing x,y, return with HL ... br /> rlca ; divide x by 8 and multiply by ... .
    and 224 ; mask off bits we don't ... /> ld a,(ix+0) ; x coordinate.
    rrca ; only ...
    R-Tape R-Tape December 2014 Development
  • Snowfall effectHow do you go about creating a snowfall effect like the one in Yeti? Now don't laugh, I'm currently printing 32 UDG's of dots OVER the top of my gam…

    ... ;arrive with IX addressing x,y, return with HL ... br /> rlca ; divide x by 8 and multiply by ... .
    and 224 ; mask off bits we don't ... /> ld a,(ix+0) ; x coordinate.
    rrca ; only ...
    R-Tape R-Tape 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…

    ... /> [CODE]; -----------------------------------------------------------------------------
    ; Plot 4x4 colored pixel on screen ... b, $f8 ; mask INK color
    rr ... ld b, $c7 ; mask PAPER color
    oddcol ...
    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…

    ... /> [CODE]; -----------------------------------------------------------------------------
    ; Plot 4x4 colored pixel on screen ... b, $f8 ; mask INK color
    rr ... ld b, $c7 ; mask PAPER color
    oddcol ...
    Einar Saukas Einar Saukas December 2014 Development
  • Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…

    ... text)

    0 -- foreground mask (set bits indicate which existing ... br /> ioctl(fd, IOCTL_OTERM_GET_WINDOW_COORD, &x, &y); // return coords top ... window
    ioctl(fd, IOCTL_OTERM_SET_WINDOW_COORD, x, y);
    ioctl(fd, IOCTL_GET_WINDOW_RECT ...
    Alcoholics Anonymous Alcoholics Anonymous 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…

    ... print mode, etc). Advance the x coordinate by char width. This ... font)
    5..6 current x coordinate
    7..8 ... coordinate
    9..10 window.x coordinate (in pixels, top ... text)
    20 foreground mask (set bits indictae which existing ...
    Alcoholics Anonymous Alcoholics Anonymous January 2015 Brand new software
  • New Game(s): Sir Ababol 2 and Sir Ababol DXHere is our own Christmas Present from Mojonia! We weren't going to release these games (at least, by the moment) but we decided just yesterday to fi…

    ... 16
    ld a,0 ;x
    rst 16
    plp ... as port then byte to mask
    ;e.g. in game ...
    R-Tape R-Tape 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…

    ... print spaces, it advances the x coordinate so nothing is actually ... . If you set up a mask such that fzx printing only ... maybe do is use special mask values to select between per ...
    Alcoholics Anonymous Alcoholics Anonymous January 2015 Brand new software
  • New Game - When Alex Didn't Do ItHello everyone, and a Happy New Year for 2015. After 6 months of toil, I've finished my graphic adventure, When Alex Didn't Do It, which consists of…

    ... the word Examine (and now X) to the verb list.
    plot in a certain manner, as ...
    RetroPhase2014 RetroPhase2014 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…

    ... a font. Ie - you can plot the horizontal pixels twice. Andrew ... (approximately) double the usual 256 x resolution, so I will add ...
    Alcoholics Anonymous Alcoholics Anonymous January 2015 Brand new software
  • 1985-2015.A topic where we can review games released on the Speccy 30 years ago, or, anyway, talk about that year.

    ... .cgi?screen=screens/in-game/x/Xcel.gif[/IMG]

    plot related bull**** designed to try ...
    Jumping Stack Jumping Stack January 2015 Games
  • Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…

    ... )
    ;Sort Priorities: Mask, Char line, Y char, X char
    ;Data ... Outputted: Gfx
    ;Interleave: Sprite
    ;Mask: Yes ...
    Alcoholics Anonymous Alcoholics Anonymous February 2015 Development
  • Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…

    ... )
    {
    char x,y;

    myrect.x=0;
    myrect ... *font; // selected font
    uint16_t x; // x coordinate in pixels
    uint16_t ... as black on black. The mask byte has set bits where ...
    Alcoholics Anonymous Alcoholics Anonymous February 2015 Development
  • Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…

    ... /> and #3 ; mask bits for high byte.
    x*32 again.
    and #224 ; mask low byte ... /> and #3 ; mask bits for high byte.
    x*32 again.
    and #224 ; mask low byte ...
    slenkar slenkar February 2015 Development
  • Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…

    ... /> and #3 ; mask bits for high byte.
    x*32 again.
    and #224 ; mask low byte ... /> and #3 ; mask bits for high byte.
    x*32 again.
    and #224 ; mask low byte ...
    slenkar slenkar February 2015 Development
  • Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…

    ... l.
    and #3 ; mask bits for high byte.
    x*32 again.
    and #224 ; mask low byte.< ... .
    and #3 ; mask bits for high byte.
    x*32 again.
    and #224 ; mask low byte.< ... main()
    {
    unsigned char x, y, temp; // unsigned so ...
    Alcoholics Anonymous Alcoholics Anonymous February 2015 Development
  • Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…

    ... .
    and 3 ; mask bits for high byte.
    x*32 again.
    and 224 ; mask low byte.< ... ; get x*32 again.
    and 224 ; mask low byte.< ...
    Alcoholics Anonymous Alcoholics Anonymous February 2015 Development
  • Raycasting (3D Games!) with SpecBAS<div><font face="Arial, Verdana"><span style="font-size: 13.3333330154419px; line-height: normal;">Here's one I wrote just recently. I wanted to see …

    ... ,mmh=1350 REM Engine60 FOR x=0 TO w-170 LET ... =SIN pla80 LET cx=2*x/w-1,rx=px,ry ...
    Dunny Dunny May 2015 Sinclair Basic
  • 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…

    ... program showing a 3d plot of cos(x*x+y*y).  sccz80 produces ...
    Alcoholics Anonymous Alcoholics Anonymous June 2015 Development
  • 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…

    ... program showing a 3d plot of cos(x*x+y*y).  sccz80 produces ...
    zub zub 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…

    ... function to which i give x,y,font and text and ... stuff like current font, current (x,y) coord, left_margin.

    mask are also present but this ...
    Alcoholics Anonymous Alcoholics Anonymous 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 …

    ... colours then use ATTR(y,x) to retrieve the attribute byte ... it's at PEEK (22528+x+(y*32)).[/quote]

    AND $03 ; mask to give correct third of ...
    Alcoholics Anonymous Alcoholics Anonymous August 2015 Sinclair Basic
  • 40 Column Printing RoutineI've written a 40 column printing routine, which I'd like to share... It's my first piece of 'public' code so go easy on me! I don't think it is a…

    ... /> ;; ------------------------------------------------------
    ;; extern void con_putcharxy(byte x, byte y, byte ascii);
    x to b
    srl c ; x=x/8 (byte offset ... a,e ; second mask
    and (hl) ; mask AND screen
    or ...
    tstih tstih August 2015 Development
  • z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…

    ... convention is that 'x' is the horizontal axis ('x' is a-cross ... axis and are quoted as x,y. This is frequently reversed ... quoted before the column/X/horizontal value (although PLOT does it the ... case). All further references to 'x' & 'y' below use this ...
    Battle Bunny Battle Bunny September 2015 Development
  • 40 Column Printing RoutineI've written a 40 column printing routine, which I'd like to share... It's my first piece of 'public' code so go easy on me! I don't think it is a…

    ... - y pixel ;
    ; c - x pixel ;
    ; de - address of ... br /> and 0x0F ; mask off where we want ...
    Kiwi Kiwi September 2015 Development
  • Angles and blocksHelp! Sprites! Blocks! Angles! I have a sprite that has a choice of 64 angles, and want it to deflect on collision with blocks. http://i1142…

    ... to store x in HL, y in DE, then plot at position ...
    Einar Saukas Einar Saukas September 2015 Development
  • RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…

    ... font
    StringBuild:
    sta ,x
    inx
    inc
    lda #0
    sta ,x
    start:
    PRINT(string ... does not print at pixel X,Y but
    ;* prints at ...
    JamesD JamesD September 2015 Development
  • 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…

    ... )
    add hl, bc ; add x offset
    ex de,hl ... hl ; grab sprite data & mask
    ld a, (de) ; load ...
    and l ; and the mask
    or h ; or the ...
    Sol_HSA Sol_HSA November 2015 Development
  • ZX81 Character SetHello, hope I don't offend anyone with my request. I've put together a program on my Amstrad that redefines a condensed text and displays it appropri…

    The ZX81 PLOT & UNPLOT commands just select ... "pixel" is actually a 4 x 4 pixel block. This in ...
    1024MAK 1024MAK December 2015 Sinclair Miscellaneous
<1…21222324252627…34>

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