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  • is there a wire frame version of total eclipse, 3d construction kit, etc?is there a wire frame version of total eclipse, 3d construction kit, etc? this would mean the game would run faster. total eclipse, etc is too slow.

    Yep, I did tecture mapping in BASIC a while ago and it really is very, very slow - even when you optimise the carp out of it. Filled polygons are a snap to draw, and very very fast when done right.

    D.
    Dunny Dunny September 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…

    ... PEEK, I'd presume a BASIC program has a fixed address ... to do it entirely from BASIC:
    [code]
    1 REM ... STATEMENT, THEN DELETE LINES 9900 TO 9980
    9910 FAST
    9920 ... (76h) in the data, the BASIC interpreter will recognise it as ...
    GReW GReW December 2015 Sinclair Miscellaneous
  • Dead issue 3b with black and white barsHi all, I've been donated an issue 3b which has some nice black and white bars with a few flashing blocks. I've done a few RAM tests and could spo…

    ... used for decoupling the power lines. Ceramic 100nF types are quicker ... .
    It also includes very basic protection, so don't connect ... greater than 5V. But for basic testing of a ZX Spectrum ... changing signal that is too fast for your eyes), the LEDs ...
    1024MAK 1024MAK December 2015 Hardware
  • Just games or also "serious stuff"?Hi guys :) When a ZX48K entered our home in 1986, i started programming for it but mainly i used it for games. No other use was accomplished: no a…

    ... of programming with, er, a BASIC course, the venerable VideoBASIC by ... for the WOS archive. Melbourne Draw taught me the very first ... me how to type reasonably fast without looking at the keyboard ...
    Alessandro Grussu Alessandro Grussu February 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…

    ... , and looking at > 50k lines of code in the z88dk ... />
    [b]1. Masked sprite draw routine from SP1[/b]
    Here is the code to draw the top row of pixels ... flood filler works.

    Lines 129 through 186 set up ...
    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/…

    ... , we don't need to draw the area that shows the ... /> [quote="kgmcneil;863355"]
    Some basic questions to think about:
    fast paced scroller, but something more ...
    RMartins RMartins June 2016 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…

    ... the asm stuff. The compile lines are listed at the top ... timer and "o" exits to basic.

    For this program ... with some arbitrary patterns, and draw it.

    void loadlevel ...
    Alcoholics Anonymous Alcoholics Anonymous June 2016 Development
  • Empire - port of trs80 basic programBack when I was a little kid, I had the opportunity to play around with a trs80 model 1 with level 2 basic. One of the games I often played was call…

    ... Then it was too fast, so I had ... br /> BASIC listing in .BAS = 29,671 (705 lines, "_noREM")< ... br /> " = 47,918 (947 lines, TRS-80 BASIC in REMs)
    BASIC ... PRINT_USING assembled = 530 (349 lines in .ASM)
    ...
    Battle Bunny Battle Bunny August 2016 Brand new software
  • 1986-2016.I'm early, but I'm tired of 1985. So here's the annual thirty-years after topic about Speccy games.

    ... the world. It's very fast in responding and writing the ... there are quilled pictures to draw, which anyway are colourful and ... enough. It's also very fast to play, there doesn't ... too fonts.
    [b]Ok: basic, fast and easy[/b].

    WhenIWasCruel WhenIWasCruel September 2016 Games
  • Akalabeth gamei found now that someone ported an ansi-basic game (coded in 1979?) to msx-basic - what about a zx-spectrum basic version of it? ;) https://plus.goo…

    ... I can colour code the lines, which I find very ... thus:
    * original Apple-II BASIC (green)
    * my ZX Spectrum ... ve compacted the Apple-II BASIC lines by removing the proliferation of ... a set of explicit PLOT/DRAW commands, saved about 1.8kb ...
    Battle Bunny Battle Bunny September 2016 Sinclair Basic
  • 2x2 tile to attribute blocksHow do you go about converting a 2x2 tile to 16 x 16 attributes? Heres an example of the tile data I'm wanting to enlarge. [code] defb 255, 25…

    ... B,16 ; number of lines in each frame graphic
    CALL drawsection2 ; draw 2 bytes worth per line ... worth it as it is fast enough.
    ;-End-------------------------------------
    MatGubbins MatGubbins September 2016 Development
  • 2x2 tile to attribute blocksHow do you go about converting a 2x2 tile to 16 x 16 attributes? Heres an example of the tile data I'm wanting to enlarge. [code] defb 255, 25…

    ... lines in each frame graphic
    CALL DrawAttrGraphic2 ; draw ... LD B,8 ; lines down
    CALL DrawAttrGraphic1 ... worth it as it is fast enough.
    ;-End ...
    MatGubbins MatGubbins September 2016 Development
  • Proportional fontsI've been doing some proportional font drawing, purely on C level at the moment, but it's orders of magnitude slower than I'd want it to be. It's sti…

    ... . In that case, how fast is fast? How slow is slow?[/quote ... /> I can do 8x8 printing fast enough to print out stuff ... . I didn't expect to draw the whole screen full of ... question was more along the lines of 'how can this be ...
    Hikaru Hikaru October 2016 Development
  • Akalabeth gamei found now that someone ported an ansi-basic game (coded in 1979?) to msx-basic - what about a zx-spectrum basic version of it? ;) https://plus.goo…

    ... a good speed just in BASIC, as the original source ... II keeps the top 20 lines for graphics and the ... bottom 4 lines for text, so I ... to clear the top 20 lines, which is quite quick, ... in BASIC by reducing the number of steps in the PLOT/DRAW ...
    Battle Bunny Battle Bunny October 2016 Sinclair Basic
  • why does line length affect angle?I am using Plot Draw to make a V like drawing. It's part of an intersection on an isometric path. You would expect one half to be the inverse coordin…

    ... machines.

    Still, this fast line drawing routines has a ... that, 1) is that drawing lines requires fractions, and fractions on ... , or just skip drawing duplicate lines.

    Just for ... 8,64: DRAW 0,50: DRAW 120,60: DRAW 120,-60: DRAW 0,-50 ...
    Timmy Timmy November 2016 Sinclair Basic
  • How would you approach parallax?So ... there is this trick by Joffa that we all know...of waiting for the ULA to reach certain pattern on the screen using the IN command. And then s…

    ... , although you will need to draw in a linear fashion, not ... vertical line. It's fairly fast, allows for easy hori/vert ... format where each 2 vertical lines are swapped around, simply because ...
    Hikaru Hikaru November 2016 Development
  • how to load machine codeI'm reading Jon Caldwell's how to write Spectrum games but can't enter the code! Here's an example:_ LD BC, (score) Call 6683 I tried putting…

    ... the one from the Sinclair Basic book that fills the screen ... little example code that the basic book suggests you enter. Up ... out, so you can't draw a box by combining - just ... get is two vertical dotted lines.

    So i played ...
    mik3d3nch mik3d3nch December 2016 Sinclair Miscellaneous
  • Fast way to clear the screen ?So I was wondering fastest way to clear the screen. I've tried this and this works but is it better than CLS ? LD HL,16384 LD BC, 6144 Loop…

    ... now figure out how to draw the lines much quicker which is ... on the thread will be fast enough
    LD HL, 22527 ...
    ivanb303 ivanb303 December 2016 Assembler
  • Fast way to clear the screen ?So I was wondering fastest way to clear the screen. I've tried this and this works but is it better than CLS ? LD HL,16384 LD BC, 6144 Loop…

    ... it in
    Boriel ZX Basic[/quote]
    Considerably faster, although ... using the standard Plot and Draw functions.

    You' ... need to write your own Draw functions (ideally in machine ... horizontal and 1:1 diagonal lines, lines with a length of 1 ...
    GReW GReW December 2016 Assembler
  • Akalabeth gamei found now that someone ported an ansi-basic game (coded in 1979?) to msx-basic - what about a zx-spectrum basic version of it? ;) https://plus.goo…

    ... Balrog, initially just replacing the DRAW statement in line 404 with ... all of the PLOT/DRAW loop in lines 401-409:
    [code ... /> ret
    [/code]
    The BASIC display loop uses DATA line ... the end of the BASIC program, the BASIC loop took 12.66 ...
    Battle Bunny Battle Bunny January 2017 Sinclair Basic
  • What should your speccy have come with ?:) I was thinking about this earlier. What changes should of been made to the Speccy when you purchased yours ? Realistically this topic really…

    ... up memory transfers. This fast burst data transfer significantly increases ... with DMA to increase screen draw performance

    - Support ... ULA and ROMs with extended BASIC. This would be based ... on Andrew Owen's OpenSE BASIC and ULA+

    - ...
    retrogod retrogod January 2017 Sinclair Miscellaneous
  • Suggest a Speccy endless runner.It's a serious question. Suggest a game, any ridiculous suggestion might be entertained, that could be made into an endless runner. My suggesti…

    ... was thinking more along the lines of the arcade game [i ... old game in BBC Basic which ran pretty fast - there were three ...
    joefish joefish January 2017 Chit chat
  • Elite clonesHi there Question. Is there any Elite clones out there for our Speccy worth playing? thanks!

    ... written in BASIC, that's how amazingly fast the Archie ... taking advantage of BBC/Archimedes BASIC's inline assembler).
    ...
    The BASIC listing would have been something ... Lander Demo
    ...several thousand lines of ARM assembly language...
    GReW GReW February 2017 Games
  • ZXBaremulator 35th anniversary editionHi, to celebrate the 35th Spectrum anniversary, I've released the first complete Spectrum 48K bare-metal emulator for Raspberry PI. It's available…

    ... , but don't expect a fast solution in bare-metal world ... border, so you can see lines don't seen before. When ... tech doc is correct, I draw the border from the precise ... -TV have an option to draw the image in "Scanning only ...
    zx81 zx81 May 2017 Emulators
  • Can I name a subroutine and then call it by name?No thats not really exactly the problem. I wrote 4 lines of Basic that draws an 8x8 square and then told it to check x,y and subtract 4 from x or y t…

    ... movement (rather than using PLOT/DRAW).

    Coincidentally I'm ... how fast I can get a horizontal pixel scroll in BASIC with ...
    Battle Bunny Battle Bunny May 2017 BASIC
  • Flicker free animation in BASIC, is it possible ?With all my various noodlings in BASIC and indeed with my so far limited assembly​ I keep coming up with the same issue. How do you do animations wit…

    ... of each of those lines to which ever key ... do we draw the line between programming in BASIC and using ... quite a few machine code/BASIC hybrids in my day. ... but it’s not strictly BASIC programming, to call a ... variables or parts of the BASIC interpreter, such as line ...
    Ast_A_Moore Ast_A_Moore May 2017 BASIC
  • im looking for a horizontal scroll routinehi, im looking for a horizontal scroll routine. i read somewhere that you can do it with at 'to' statement, somewhere in a print routine. althoug…

    ... all the PLOT & DRAW coordinates for the graphics at ... set is extracted to draw the graphic at the ... an assembler routine to draw the graphic once the ... scenery is defined in lines 41-45, the dungeon ... in lines 701-799. The outside scenery is done in BASIC, ...
    Battle Bunny Battle Bunny June 2017 Sinclair Basic
  • im looking for a horizontal scroll routinehi, im looking for a horizontal scroll routine. i read somewhere that you can do it with at 'to' statement, somewhere in a print routine. althoug…

    ... rendered using PLOT & DRAW (indirectly, as the ROM ... from the assembler not the BASIC). The playing instructions are ... line drawings are constructed via lines 13 (dungeon environment), 352 ... restored to its original BASIC to give a very ... you wanted to DRAW?
    Battle Bunny Battle Bunny June 2017 Sinclair Basic
  • z88dk sp1lib with fzxThe numbers dont seem to display properly? fzx by itself works [quote] // for targets supporting fzx // zcc +zx -vn -startup=31 -O3 -clib…

    ... best choice if you want fast printing like for scores in ... bit too much like the Basic font,
    does it have ... want to use sp1 to draw text?
    [/quote]

    Alcoholics Anonymous Alcoholics Anonymous June 2017 Development
  • Recreated Spectrum .What do we get for the "now" (Aug 2017) best retail price of around £35?Well best/ cheapest retail prices can vary a bit so I thought it best to be specific. At this £35 price ,is it a good deal and what do we get ? A…

    ... revisit Sinclair Basic Programming"
    lines.
    ... only wanting to fast load games" ...
    harriusherbartio harriusherbartio August 2017 Hardware
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