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  • Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…

    ... a couple of "monstrosities" in BASIC including a couple of text ... can assume all X sprite coordinates are even (works fine for ...
    TVzombie TVzombie February 2011 Sinclair Basic
  • Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…

    ... . Yes: you can use even coordinates on the X axis, but ... to account why is Sinclair BASIC rather slow?

    Please ...
    Paddy Coleman Paddy Coleman February 2011 Sinclair Basic
  • Utility or routine to save/display imagesLet's assume I have an image or sprite at coordinates x,y with w witdh and h height. If I were to store this image, which storage method would allow …

    ... an image or sprite at coordinates x,y with w witdh ... be specified with POKEs from Basic. I know how to do ... by character data storage from Basic, but it would be too ...
    Dr BEEP Dr BEEP March 2011 Sinclair Miscellaneous
  • 3D graphicsWould be there interest in some tutorial about 3D vector graphics on zx (my slowly paced side project) ? EDIT: [b]Content[/b] [list] [*]The Math [*…

    I have to admit, I am looking forward to seeing how it can be done (i assume in ASM or Basic) will we be using matricies and homogeneous coordinates like OpenGL =D
    Zetr0 Zetr0 June 2011 Development
  • Birthday PlotsHello all; When browsing the web, I stumbled across an oddity known as Birthday Plots. In effect somebody enters a numeric date and the computer prin…

    ... to ensure that the calculated coordinates fit within the screen dimensions ... convert the listing to ZX Basic.
    Battle Bunny Battle Bunny July 2011 Sinclair Basic
  • Birthday PlotsHello all; When browsing the web, I stumbled across an oddity known as Birthday Plots. In effect somebody enters a numeric date and the computer prin…

    ... 80 seem to imply all coordinates are computed between 0 and ... the minimum and maximum plot coordinates that are randomly generated and ... corresponding DRAW command in Sinclair BASIC.

    Moreover, the relative ...
    Einar Saukas Einar Saukas July 2011 Sinclair Basic
  • Assembler question about collisions and arranging dataSay you have a game with a playercharacter and some items on the screen - pretty normal for most games, and now you need to check if the player has r…

    ... the corners. Take the x coordinates, subtract one from the other ... the same with the y coordinates. If the x difference and ... or under you have a basic box collision.

    Now ...
    jonathan jonathan July 2011 Development
  • Othello/Reversi Validate and Make MovesI'm working an Othello/Reversi game The board is represented as a 2d array 8*8 ie: 00000000 00000000 00000000 00012000 00021000 00000000 00000000 000…

    ... using and changing p,q coordinates in one place and x ... didn't expect it. Sinclair Basic is stupid sometimes.

    Ralf Ralf September 2011 Development
  • The Sqijer v1.0This is just a quick'n'dirty utility to convert png to self-printing graphics in assembly which you can easily use from BASIC (or from whatever you w…

    Very nice.
    Can you use high resolution coordinates from Basic? The tutorial talks about coordinates but doesn't specify this.
    zxbruno zxbruno October 2011 Brand new software
  • SP1 library questionsI'm working on my first game. I've not written a game since the late 1980s and that was a text based multiuser dungeon for BBC Micros with econet... …

    ... which are updated with sprite coordinates after a sp1_MoveSpr* function is ... attribute detection as in many Basic programs. You can investigate the ...
    Alcoholics Anonymous Alcoholics Anonymous October 2011 Development
  • SP1 and memoryWhile developing my program, I've run into memory related issues and haven't (yet) run into any advice over how SP1 uses memory. The examples all sb…

    ... print as tiles at character coordinates. Since sp1 doesn't draw ... would be the case in basic. This was done in [URL ...
    Alcoholics Anonymous Alcoholics Anonymous October 2011 Development
  • Newbie says 'Alreet?'Hiya dudes, Just dropping a line to say hello as i've decided at 33 to try and fulfill a long time ambition to write a speccy game in machine code..…

    ...
    He is converting character coordinates to an attribute address and ... the pixel memory and the basic program is stepping through ... snippet is taking character coordinates B(x)=000C CCCC ... address directly from pixel coordinates is more time consuming ...
    Alcoholics Anonymous Alcoholics Anonymous November 2011 Development
  • Arcade Game Designer 2.0 releasedI know dozens of you downloaded the previous version of AGD. Well, you can put it away now because I've made some major improvements to that version…

    ... the block X to amend coordinates to imitate more accurate collision ...
    jonathan jonathan December 2011 Development
  • Is there a limit to the numberof variables you can have in BASIC..... Reason I ask is I've got an idea....but using my "lowest common denominator" approach to code I fear that I'…

    ... for UDGs on screen from BASIC, as SCREEN$ doesn't recognize ... the maze, defining the current coordinates and status for each object ...
    Battle Bunny Battle Bunny January 2012 Sinclair Basic
  • 3D Wireframe/vector animation creator and player?Is there any software that can help record wireframe 3D animations by creating a file that stores just the coordinates and lines? If the answer is "n…

    ... come up with something in BASIC just to get it going ... pairs of x and y coordinates for each line drawn, or ...
    zxbruno zxbruno March 2012 Development
  • Scrolling a mapCan someone explain in idiots terms how you scroll a map. I'm not after code as such, just an explanation of how it can be done. I'd like to scroll…

    ... stuck. Basically (and using just BASIC :-P) I created a map ... of it depending on the coordinates. I also added IN commands ...
    zxbruno zxbruno May 2012 Development
  • Need to scroll one column using m.c.I've used many of the available routines to scroll the entire screen in any direction, but I'm not being able to find one that would allow me to scro…

    ... compare doing the scrolling in BASIC, out of curiosity. Assigning the ... Parameter error" if the print coordinates fall outside the display file ... /> ret
    [/code]
    The BASIC demo routine.
    [code]
    Battle Bunny Battle Bunny May 2012 Development
  • GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…

    ... get_message(&msg) checks for basic events, such as:
    - compare ... it finds window by checking coordinates versus rectangle positions (following z ... .

    In addition to basic events described earlier there are ...
    tstih tstih May 2012 Development
  • ZX-Paintbrush 2.2.1 releasedDear readers and friends of ZX-Spectrum emulator stuff! Today I released the version 2.2.1 of ZX-Paintbrush with interesting new features and many b…

    ... definitely know the maximum PLOT coordinates, but forgot to take care ... META code (let's say Basic keywords) while the user is ...
    clausjahn clausjahn June 2012 Emulators
  • WibbleBibble's Basic threadHi in an attempt to keep my questions from spamming the forum. I think its better to put them all in one place. Thanks everyone so far, I feel I am …

    ... a timer from FRAMES in BASIC entails updating it as infrequently ... character-based movement with integer coordinates then there should be no ...
    Battle Bunny Battle Bunny August 2012 Sinclair Basic
  • WibbleBibble's Basic threadHi in an attempt to keep my questions from spamming the forum. I think its better to put them all in one place. Thanks everyone so far, I feel I am …

    ... a timer from FRAMES in BASIC entails updating it as infrequently ... character-based movement with integer coordinates then there should be no ...
    WibbleBibble WibbleBibble August 2012 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…

    ... the applications for someone using BASIC. Do you think it ... worth 'releasing' this as BASIC tool? (Although it's ... RST 10/be used in basic
    di
    ... 2 ; set the atflag for coordinates later
    ld (atflag ...
    uglifruit uglifruit August 2012 Development
  • WibbleBibble's Basic threadHi in an attempt to keep my questions from spamming the forum. I think its better to put them all in one place. Thanks everyone so far, I feel I am …

    ... change to get the spectrum basic listing to work in your ... really want), and the graphics coordinates are reversed in the Y ... . The vast majority of speccy BASIC programs run with very little ...
    Dunny Dunny August 2012 Sinclair Basic
  • WibbleBibble's Basic threadHi in an attempt to keep my questions from spamming the forum. I think its better to put them all in one place. Thanks everyone so far, I feel I am …

    ... really want), and the graphics coordinates are reversed in the Y ... . The vast majority of speccy BASIC programs run with very little ...
    WibbleBibble WibbleBibble August 2012 Sinclair Basic
  • Image to BASIC commandsHi all I'm looking for an app that read an image (jpg, gif, etc...) and convert it to BASIC commands (DRAW, CIRCLE, etc...) The images to convert wi…

    ... the required BASIC commands could be generated from those saved coordinates. If ...
    Battle Bunny Battle Bunny October 2012 Development
  • IX register woes - or is SPIN buggy?Or am I missing something? I'm trying to use the IX reg to acess a table containing an x and y coord. My code below just doesnt seem to work proper…

    ... out, if those are pixel coordinates, you should be subtracting to ... it's done in Spectrum Basic when you execute PLOT.
    Ralf Ralf November 2012 Development
  • 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 …

    ... meantime, here's my compact BASIC version:
    [code]
    1 ...
    1010 INPUT "Enter centre coordinates for:"'"x: ";cx,"y: ";cy ... 2000
    [/code]
    The BASIC version doesn't have any ...
    Battle Bunny Battle Bunny November 2012 Development
  • best full game exclusive to a magazine covertapewouldn't be surprised if this thread has been done before. can't be bothered to search tbh! just playing this atm [url]http://www.worldofspectrum.o…

    ... [/IMG]

    A cool BASIC game published in Microhobby. You ... some flies by typing their coordinates in a grid. First, the ... . Then, you must type these coordinates. If you guess the position ...
    JuanF. Ramirez JuanF. Ramirez January 2013 Games
  • The Official Crap Games Competition 2013 Thread!Just to announce that the 2013 CGC is OPEN! [IMG]http://i1142.photobucket.com/albums/n608/daveyboyhughes/cgctitle2_zps77591934.jpg[/IMG] And for th…

    ... drawing that many characters from BASIC would take up most of ... it down is copying the coordinates of the segments.
    Rebelstar without a cause Rebelstar without a cause July 2013 Games
  • The Official Crap Games Competition 2013 Thread!Just to announce that the 2013 CGC is OPEN! [IMG]http://i1142.photobucket.com/albums/n608/daveyboyhughes/cgctitle2_zps77591934.jpg[/IMG] And for th…

    ... the dimensions 255 instead since basic starts counting array indices at ... length + 1
    set initial coordinates for snake segments in r ...
    Paradigm Shifter Paradigm Shifter July 2013 Games
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Latest Posts

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