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<1…22232425262728…34>
  • 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…

    ... empty
    sbrk(50000, 3000); // add 40000-49999 to malloc

    ;GRAPHIC DATA:
    ;Pixel Size: ( 16, 24)
    ;Char ...
    slenkar slenkar November 2013 Development
  • Collision Detection in SP1Hi, Does anyone have a well-documented example of using collision detection in spritelib. I've search WoS and Z88DK forums but no joy. Something wi…

    ... /> add a,(iy+5) ; add horizontal rotation
    ld b,a ; b = pixel ... /> add a,(ix+5) ; add horizontal rotation
    ld d,a ; d = pixel ...
    slenkar slenkar November 2013 Development
  • Collision Detection in SP1Hi, Does anyone have a well-documented example of using collision detection in spritelib. I've search WoS and Z88DK forums but no joy. Something wi…

    ... is going straight to calculating pixel coordinates and then doing collision ... of creating and deleting sprites add a few cycles. Not much ...
    Alcoholics Anonymous Alcoholics Anonymous November 2013 Development
  • Collision Detection in SP1Hi, Does anyone have a well-documented example of using collision detection in spritelib. I've search WoS and Z88DK forums but no joy. Something wi…

    ... /> add a,(iy+5) ; add horizontal rotation
    ld b,a ; b = pixel ... /> add a,(ix+5) ; add horizontal rotation
    ld d,a ; d = pixel ...
    slenkar slenkar November 2013 Development
  • FZX Driver for z88dkAn fzx library for z88dk can be downloaded [URL="https://drive.google.com/file/d/0B6XhJJ33xpOWM2hWNjAxMVkxaEk/edit?usp=sharing"]here[/URL]. The libr…

    ... changes to allow > 256 pixel resolution (for timex video modes ... are fairly simple I can add those.[/QUOTE]

    BTW ...
    Einar Saukas Einar Saukas December 2013 Announcements
  • FZX Driver for z88dkAn fzx library for z88dk can be downloaded [URL="https://drive.google.com/file/d/0B6XhJJ33xpOWM2hWNjAxMVkxaEk/edit?usp=sharing"]here[/URL]. The libr…

    ... +0) ; a = font height
    add a,h

    cp ... +font_height gets you to one pixel below the vertical extent).
    Alcoholics Anonymous Alcoholics Anonymous December 2013 Announcements
  • FZX Driver for z88dkAn fzx library for z88dk can be downloaded [URL="https://drive.google.com/file/d/0B6XhJJ33xpOWM2hWNjAxMVkxaEk/edit?usp=sharing"]here[/URL]. The libr…

    ... +0) ; a = font height
    add a,h

    cp ... +font_height gets you to one pixel below the vertical extent).[/QUOTE ... but I will try to add this change soon. It is ...
    Timmy Timmy December 2013 Announcements
  • A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…

    ... be kind of permisive with pixel RGB values, it would expect ... .

    PS2 - You can add the converter to the package ...
    slenkar slenkar December 2013 Brand new software
  • Multicolor chess?I thought multicolor chess pieces would be a good idea, since it's easy to fit a 8x8 chessboard within the 9x9 tile area of BIFROST*. However this tu…

    ... the board to use 24x24 pixel squares, with the multicolour pieces ... each square (with a 4-pixel border)

    You could ... of the board squares, or add some sort of sigil in ...
    joefish joefish December 2013 Development
  • P47 Thunderbolt Colour/Attribute hacking?I've seen someone (can't remember who now, sorry) hacking into monochrome games such as After The War and Outrun Europa and adding/changing the colou…

    ... also no easy way to add color. For every game you ... to have the lower to rows in a different background color ...
    chev chev December 2013 Games
  • P47 Thunderbolt Colour/Attribute hacking?I've seen someone (can't remember who now, sorry) hacking into monochrome games such as After The War and Outrun Europa and adding/changing the colou…

    ... agree that there can be "pixel clash" at times due to ... extending from $FA20-$FC3F (17 rows). The loaded attributes are not ...
    Battle Bunny Battle Bunny December 2013 Games
  • Using rainbow processing for red/green stereoscopeWould it be possible to set the display attributes to alternate lines of paper black, ink red and paper black, ink green with full width? You could …

    ... . They'd be on alternate rows. You may need to do ... swaps between screens after every pixel row, and also alternates the ...
    joefish joefish January 2014 New game ideas
  • A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…

    ... the character would be both pixel data and the attribute data ... byte masks for drawing the pixel and attribute data. That is ... off the PAPER bits, and add it to the list alongside ...
    joefish joefish January 2014 Brand new software
  • Elliptical ChallengeSubsequent to the recent "Graph Plot" thread, I wrote this general purpose ellipse drawing routine which will plot (although it doesn't actually use …

    ...
    ld de,12
    add hl,de ;HL=data pointer ... a,1
    Pixel: rrca
    djnz Pixel
    ld b,(hl ...
    Battle Bunny Battle Bunny January 2014 Development
  • Clearing 22 lines of the screenHow do I go about clearing the top 22 lines of the screen and leave the bottom #0 area untouched? I have a routine to reset the attributes, but cant…

    ... CLEAR A GIVEN NUMBER OF ROWS (held in C) from ...
    dec c ;number of rows counter
    ret z ;stop ... when 'c' rows hev been done
    ld ... ;check low byte
    add a,32 ;next row down ... a segment too
    add a,8 ;and they are ...
    R-Tape R-Tape January 2014 Development
  • Please explain how a Kempston interface circuit works.Can someone help me understand how a Kempston joystick interface works, as I want to design and build my own as an experiment. I understand switches…

    ... : if no-one wants to add extensions to kempston interfaces just ... I think I'd want rows of jumpers which would be ...
    guesser guesser January 2014 Hardware
  • Pac-Land: can be coloured?All versions of this game are full coloured, but not the Spectrum version. It has large sprites, but maybe the scroll is too fine to make a coloured …

    ... /> RRCA
    RRCA
    ADD A,80
    LD D ... 63232
    REPT 640 ;20 rows * 32 columns
    .BYTE ...
    LD A,H
    ADD A,156 ;go to attribute ... br /> LD B,0
    ADD HL,BC
    EXX
    LD A,H
    ADD A,156 ;go to attribute ...
    Ralf Ralf January 2014 Games
  • Land of Mire Mare[Quote]This game has to be considered as a tribute. It's inspired by the unreleased Mire Mare game & characters created by Ultimate Play The Game in …

    ... goes up to 512 byte, add to that the main character ... .

    Backgrounds are 8x8 pixel blocks and the screen is ...
    BiNMaN BiNMaN January 2014 Brand new software
  • How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…

    ... /column coordinates. Doing it by pixel across byte boundaries would be ... /> add hl,hl
    add hl,hl
    add hl,hl
    add hl ... /> ld hl,BlockData-SetBLOCK
    add hl,bc
    ld (23680 ...
    Battle Bunny Battle Bunny February 2014 Development
  • Animated attribute revealA new challenge to solve next. I would like to create an animated attribute reveal in machine code by having my 768 byte attributes held in ram whic…

    ... ld hl,13616
    add hl,de
    ld ... /> djnz REV2 ;done 24 rows?

    ld ... ld de,(L2R2L)
    add hl,de ;top of ... /> pop hl
    add hl,de ;starting column< ...
    Battle Bunny Battle Bunny February 2014 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…

    ... cherry picking what subroutines to add to your program.
    ... a sprite to a specific pixel location is called sp1_MoveSprPix() ... -2047)
    y = vertical pixel coordinate (0-2047)
    [/code ... /> ld bc,-10 ; vertical pixel coordinate, above screen
    ld ...
    Alcoholics Anonymous Alcoholics Anonymous February 2014 Development
  • Pac-Land: can be coloured?All versions of this game are full coloured, but not the Spectrum version. It has large sprites, but maybe the scroll is too fine to make a coloured …

    ... 63232
    REPT 640 ;20 rows * 32 columns
    .BYTE 0 ... />
    LD A,H
    ADD A,156 ;go to attribute ...
    LD B,0
    ADD HL,BC
    EXX

    LD A,H
    ADD A,156 ;go to attribute ...
    Ralf Ralf February 2014 Games
  • Using the stack to blit bufferI was using a ldir to blit my back buffer to the screen RAM, and it was working pretty well if not rather slow. After reading about using the stack …

    ... was limited to character rows, but with horizontal pixel shift and a ... 16x16 print routine without pixel shift that could start on ... any pixel line :)

    I don ...
    David Jones David Jones February 2014 Development
  • Tile routinesHi all, Please does anyone have any examples of tile routines in pure asm to set up maptile screens. I would like to try and understand them and ti…

    ... of the DEFB lines, so add another 16 numbers to fill ... />
    For more screen rows, just add another 10 or so DEFB ... statements for the extra rows. Put ... , and see if you can add different sorts of tile graphic ...
    Morkin Morkin February 2014 Development
  • Tile routinesHi all, Please does anyone have any examples of tile routines in pure asm to set up maptile screens. I would like to try and understand them and ti…

    ...
    ld b,8 ; 8 pixel lines to print

    and 248
    add a,64
    ld h ...
    rrca
    rrca
    add a,c
    ld l ... a
    sra a
    add a,88
    ld h ...
    rrca
    rrca
    add a,c
    ld l ...
    Morkin Morkin March 2014 Development
  • Tile routinesHi all, Please does anyone have any examples of tile routines in pure asm to set up maptile screens. I would like to try and understand them and ti…

    ...
    ld b,8 ; 8 pixel lines to print[/CODE][/QUOTE ... you already figured out
    - add more DEFB statements to the ... as they're bigger
    - add more CALLs under print_tile to ...
    Morkin Morkin March 2014 Development
  • Tile routinesHi all, Please does anyone have any examples of tile routines in pure asm to set up maptile screens. I would like to try and understand them and ti…

    ...
    ld b,8 ; 8 pixel lines to print

    and 248
    add a,64
    ld h ...
    rrca
    rrca
    add a,c
    ld l ... a
    sra a
    add a,88
    ld h ...
    rrca
    rrca
    add a,c
    ld l ...
    alienbanana alienbanana March 2014 Development
  • 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…

    ... lot of freedom to change/add attribute values on the fly ... up enough processor time to add more aliens. I can work ... there must be a 2-pixel repeat in the vertical pattern ...
    LuMan LuMan March 2014 New game ideas
  • 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…

    ... special, and I need to add the attribute routine (optimising it ... DE to stack
    add hl,de ;Add 30 to HL to ... /> .db 16 ;Sprite Height - x8 rows

    sprloc:
    .db ...
    LuMan LuMan March 2014 New game ideas
  • THE HOBBIT loading screenHello again, thought I'd have a go at an alternative loading screen for The Hobbit. [IMG]https://dl.dropboxusercontent.com/u/61658082/THE%20HOBBIT%…

    ... ;760265] If I try to add further details to existing screens ... using pictures made by new pixel artists, sounds like a perfect ...
    Muig Muig March 2014 Games
<1…22232425262728…34>

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