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<1…16171819202122…34>
  • 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…

    ... /> original code (converted to ZX BASIC) = 40 secs
    named constants ... all of the PLOT/DRAW coordinates pre-calculated and held in ...
    Battle Bunny Battle Bunny September 2016 Sinclair Basic
  • 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…

    ... are the line numbers of BASIC executed when that particular attribute ... example executes 16 lines of BASIC in order to work out ... GOSUB stack, and converts the coordinates from Apple-II ranges to ... -9 always use the same basic graphics data as distance 1 ...
    Battle Bunny Battle Bunny October 2016 Sinclair Basic
  • Arrays in BASICHi so I'm making this crappy game and I wanna store the screen positions of some UDGs in in a 50x2 array cause I have 50 characters. So I made the ar…

    ... in the case of Sinclair BASIC) for true.

    For ... needs one byte. Since Sinclair BASIC doesn't have an integer ... store small integers (particularly screen coordinates) in a character or string ...
    GReW GReW October 2016 Sinclair Basic
  • Arrays in BASICHi so I'm making this crappy game and I wanna store the screen positions of some UDGs in in a 50x2 array cause I have 50 characters. So I made the ar…

    [quote="GReW;883643"]Since Sinclair BASIC doesn't have an integer ... store small integers (particularly screen coordinates) in a character or string ...
    Alcoholics Anonymous Alcoholics Anonymous October 2016 Sinclair Basic
  • I'm writing an Operating SystemOkay this might seem like a bait thread, but I am legitamately interested in figuring out how to write a multi-process system for the ZX Spectrum (no…

    ... going to use FZX from BASIC with PRINT #4, then you ... $22aa+2 to convert screen coordinates (row and column) to screen ...
    Einar Saukas Einar Saukas November 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…

    ... -calculated all of the coordinates for every graphic at ... relative values for DRAW coordinates have to be calculated ... simplifying the resolution of the coordinates. All of the coordinate ... Restricting the program to using BASIC leaves little further options for ...
    Battle Bunny Battle Bunny January 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…

    ... the PLOT & DRAW coordinates for the graphics at different ... has been selected in the BASIC. I'd originally done ... it all in BASIC, but I wanted it ... outside scenery is done in BASIC, as the objects are ... a Spectrum, so the coordinates for each frame would ...
    Battle Bunny Battle Bunny June 2017 Sinclair Basic
  • z88dk multicolour enginesI've been trying to work out how the multicolour sprite engines have been implemented in z88dk. It's not obvious. Looking in the source, I found …

    ... does PRINTAT using 1-based coordinates and sticks to x,y ... without having to write a basic loader which can make it ... the jump to the basic isr because the basic isr conflicts with ... lastk being set by the basic isr so as you can ...
    Alcoholics Anonymous Alcoholics Anonymous July 2017 Development
  • Flood Fill IssueHi Folks, Came across the following Flood Fill routine by John Metcalf: [code]; scanline fill by John Metcalf ; call with d=x-coord, e=y-coo…

    ... so that you POKE the coordinates in to 59998 (X) and ... /> [/code]

    The amended BASIC program now reads:

    Paddy Coleman Paddy Coleman August 2017 Development
  • Speeding up PRINT code in ROMHi Folks, I seem to recall that someone stated the PRINT command is rather slow because it has to handle screen and printer printing - is this cor…

    ... is needed to call from BASIC, e.g. from a user ... /> ex de,hl ; Save AT coordinates to stack, swapping with

    pop de ; Restore AT coordinates from stack

    ATTRIB_CHECK ...
    Georgeo Georgeo August 2017 Sinclair Basic
  • Thought this would be simple... Z80Hi Folks, Started to read "Beyond simple BASIC, Delving Deeper into your ZX Spectrum" by Dilwyn Jones. This is a great book and I came across the…

    ... need to deconstruct the actual coordinates:

    Y coord = ssrrrppp ... />
    (Note: Unlike in BASIC, the coordinates originate in the top left ... , for example, any pixel at coordinates 0,0–7,0 will ...
    Ast_A_Moore Ast_A_Moore September 2017 Development
  • Tai Pan (Mikro-Gen) - BUG or...How to leave a port? What to type? After buying ship and cargo, usual typing name of new destination (Hong Kong, Turkey,... whatever) leads to me…

    ... ="catmeows;929581"]Hi according the BASIC listing, you should use three ... idea was to type REF coordinates like 5.08, 11.16 ... long way to hit/guess coordinates of those ports (man, hon ... ... proprer way is to type coordinates (which maybe exist in original ...
    Alex_Lux Alex_Lux December 2017 Games
  • Help needed (YS Megabasic - Sprite designer)Hi everyone If i select the Image Editor on YSM Sprite Designer and try to use any option (S for colours, C to clear grid etc.), nothing happens. It…

    ... different than the original Spectrum BASIC. see the instruction 7-8 ... system. Also,the PRINT AT coordinates are relative to the top ... and SCREEN$ use absolute screen coordinates."

    Not too lucky ...
    Pgyuri Pgyuri March 2018 Sinclair Miscellaneous
  • Help needed (YS Megabasic - Sprite designer)Hi everyone If i select the Image Editor on YSM Sprite Designer and try to use any option (S for colours, C to clear grid etc.), nothing happens. It…

    ... different than the original Spectrum BASIC. see the instruction 7-8 ... system. Also,the PRINT AT coordinates are relative to the top ... and SCREEN$ use absolute screen coordinates."

    Not too lucky ...
    alchemist alchemist March 2018 Sinclair Miscellaneous
  • How to stop a flickering character erasure?I'm trying to figure out how to build a moving sprite. Eventually it will be made up of several UDG's. However its early days yet so I'm experimentin…

    ... able to run an extended BASIC when there's a perfectly ...
    Dunny Dunny May 2018 BASIC
  • How to stop a flickering character erasure?I'm trying to figure out how to build a moving sprite. Eventually it will be made up of several UDG's. However its early days yet so I'm experimentin…

    ... 1 "Set initial variables for coordinates"
    2 "Print the ... /> 4 "Set new coordinates depending on the key pressed ... 6 "If new coordinates are different than last coordinates, then erase ... coordinates"

    Tell this to your speccy in its BASIC ...
    IvanBasic IvanBasic May 2018 BASIC
  • im looking for a fill routine written in basici know this would be slow but i want to tinker with it to produce something else.

    Well, this is no basic code, but the algorithm is:< ... .1.) Grab smallest two x coordinates from Lx, and draw a ...
    tstih tstih August 2018 Development
  • Artillery - projectile motion gameI started writing this around 25 years ago and abandoned it due to performance issues, and a lack of physics knowledge. Bandersnatch on Netflix fille…

    ... using every trick possible in BASIC :)[/quote]

    You are ... to transform those into horizontal coordinates to generate slices using TAB ... use any possible trick in BASIC yet, now I am doing ...
    IvanBasic IvanBasic March 2019 Brand new software
  • Artillery - projectile motion gameI started writing this around 25 years ago and abandoned it due to performance issues, and a lack of physics knowledge. Bandersnatch on Netflix fille…

    ... would be cool for vertical coordinates outside the screen limits, perhaps ... . BTW you can see the Basic code in the description.
    hikoki hikoki March 2019 Brand new software
  • SpecBAS really needs a manual!That Word doc that I converted to an RTF for you Dunny and ASH-II, is still somewhat sparse. I spent bloody hours PLOT/DRAWing a landscape to steer m…

    ... the pixel colour at those coordinates - rather than trying to limit ... Spectrum - although 95% of Speccy BASIC code will work, you have ...
    Dunny Dunny August 2019 Sinclair Basic
  • How to write a simple C+asm horizontal scrolling game (Tutorial, z88dk)[b]How to write a simple C/asm horizontal scrolling game[/b] [b]Note:[/b] This tutorial has multiple parts... I am still writing but this first pa…

    ... , given its y and x coordinates. We send that address into ... looks pretty similar to the basic version now.

    ... be printed at coordinates (y,3)... Remember the spectrum basic has its ... Remember this line in the BASIC version? We literally copied it ...
    Timmy Timmy September 2020 Development
  • How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…

    ... get rid of it in Basic, but I still don't ... like you do it in BASIC.

    For example:
    coordinates of the tiles
    ld ... and ending of the tile coordinates I mentioned before
    call ...
    Kotek Kotek June 2022 Development
  • How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…

    ... would be best learning enough basic first to get the character ... objects array that stores the coordinates of those which would allow ...
    Paradigm Shifter Paradigm Shifter June 2022 Development
  • How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…

    ... would be best learning enough basic first to get the character ... objects array that stores the coordinates of those which would allow ...
    Kotek Kotek June 2022 Development
  • How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…

    ... is in collision map coordinates, not tile coordinates (so in range 0 ... performance over doing this in Basic though I think :)

    Paradigm Shifter Paradigm Shifter July 2022 Development
  • Currah MicroSourceThis is an interesting one for the experts to mull over. I've got (and love) a MicroSource interface from Currah which consisted of an 8K ROM provid…

    ... providing assembly (excellent), forth (v. basic) and debug facility.

    Chris Chris August 2001 Emulators
  • zx32: cursor keysAre the cursor keys emulated on zx32? I ask because i want to select the 128k Basic option from the opening menu in Spectrum 128 mode, but when I pre…

    ... want to select the 128k Basic option from the opening menu ... how do I select 128K basic in zx32?
    Spector Spector July 2001 Emulators
  • Idea about improving EmulatorHi, I got a bright idea today how to improve such excellent emulators a bit more. Okay, disassemblers are available in nearly every one new released …

    ... how about a build in Basic compiler (much like HiSoft Colt ... and bit-test, or HiSoft Basic 1.1)?
    In fact ... compiler. The extended basic could base on Beta Basic, Laser Basic (Laser Compiler ... was lame) or Mega Basic and can include extra commands ...
    LCD LCD April 2001 Emulators
  • How do i learn to programAll the years i had a computer the only one i could program was the Texas Instruments Ti99/4a and when using extended basic with its so simple sprite…

    ... /4a and when using extended basic with its so simple sprite ... wasnt very good with speccy basic as well all this peek ...
    Andy Gurr Andy Gurr January 2002 Games
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