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Getting attribute location from a screen coordinates (x,y)I am having trouble figuring out how to convert an x,y coordinate pair (pointing to a specific pixel) to the location of the attribute for the block …
... out how to convert an x,y coordinate pair (pointing to a ... attributes but was in the screen.
Does anyone know ... that once I understand the screen layout better then I will ... hopefully help me understand the screen layout better. -
Convert x,y to Attribute Address in AssemblyWhat is the fastest way, given x,y (in hl) to return the attribute address?
What is the fastest way, given x,y (in hl) to return the attribute address? -
DRAW x,y,a Algorithm - how does the ROM do it?Hi all, Getting on with SpecOS, and one of the things I would love to do is to preserve the original ROM's behaviour when drawing Arcs. This is don…
... is done by using DRAW x,y,a where the alogorithm starts ... , finally ending up at point x,y.
I've been ... -
X=Y=ZFirst public outing of X=Y=Z for the 48K Spectrum, a 4-level demo which can be download from: [as TZX] [URL="http://www.bobs-stuff.co.uk/extras/xyzd…
First public outing of X=Y=Z for the 48K Spectrum, ... -
New Game : X=Y=ZFull version of X=Y=Z is now available from my site at: [URL="http://www.bobs-stuff.co.uk/extras/x=y=z.zip"]http://http://www.bobs-stuff.co.uk/extra…
Full version of X=Y=Z is now available from ... .bobs-stuff.co.uk/extras/x=y=z.zip"]http://http://www ... .bobs-stuff.co.uk/extras/x=y=z.zip[/URL]
Screen$ (x,y)Hi everyone As you know, Screen$ doesn't recognize UDG characters. Is there any way to solve this problem? I want to "identify" an UGD character o…
Hi everyone
As you know, Screen$ doesn't recognize UDG characters.
Is there any way to solve this problem?
I want to "identify" an UGD character on screen...
ThanksSort 2 byte words (x, y) on ypos, also question about swap (DE), (HL)Well that was a lot of debugging ;) But if you want a routine which takes an array of 16 byte words x, y and then sort them on y (ignoring x), I'm…
... byte words x, y and then sort them on y (ignoring x), I'm ... x-coord, y-coord. It sorts on y-coord only and ignores the x ... a, (hl) ; A = data[left].y
or a ; CCF
y
or a ; CCF
Y if I find a movable ...Amazing Short Type-InsHey all ! Been having some pretty stressfull days lately so I tought I would type in some games. There was a very nice type-in book here in Slovenia…
Kempston mouse emulationOK, so I've read the FAQ and can understand how to "do" a mouse in an emulator. Just to be clear about it though, perhaps someone could be kind enoug…
... to confirm:
The x/y counters roll round in the ... mouse movements, not just absolute screen x/y co-ords, right?
Repton ManiaHi all, I am the creator, and look after, the Repton Resource Page ([url]www.reptonresourcepage.co.uk[/url]). For the site, I have written a freely …
... (screen from,X,Y,screen to,X,Y,0x00) co-ordinates are x=(X-12)div 4;y=(Y-24 ... Piece data: 6 bytes (screen,X,Y,ScreenA X,ScreenA Y,0x00) co-ordinates as ... 0x7EDC Spirit Data: 4 bytes (Screen,X,Y,direction) co-ordinates as above ...Kempston mouse emulationOK, so I've read the FAQ and can understand how to "do" a mouse in an emulator. Just to be clear about it though, perhaps someone could be kind enoug…
[QUOTE=Laser;176247]The x/y counters roll round in the 8-bit byte (...254,255,0,1...) effectively just representing accumulated delta mouse movements, not just absolute screen x/y co-ords, right?
[/QUOTE]
Yes, that's right.XeldaI've decided to take on the Zelda tribute game and take over the Xelda title (because it's a great title name). Working with the MK2 Mojon twins gam…
... something that will capture level/screen/x,y/objects_acquired/flags that might show ...XeldaI've decided to take on the Zelda tribute game and take over the Xelda title (because it's a great title name). Working with the MK2 Mojon twins gam…
... something that will capture level/screen/x,y/objects_acquired/flags that might show ... entry point to the current screen, determined as follows:
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…
... overwrite anything drawn to the screen directly.
[/quote]
screen -> x,y=0,0 width,height= ... 12, 0, 192 }}; -> x, width, y, height
[/code]
... rectangle covering the full screen -> x,y=2,0 width,height= ...is there a way of reading characters off the screen and turning that into a string? this has to be done in basic. i know it would have something to do with peeking memory (maybe screen memory) but would this change due to programs r…
Yes, although [b]screen$(x,y)[/b] works [u]slow[/u]-- ... info from the screen area, then try ATTR(x,y), which is much ...42 colums in screen, in anywherethe routine write in anywhere of the screen, it can start to write in 32X24 position and write from it in 42 colums, it is utility to have border wit…
... write in anywhere of the screen, it can start to write ... routines to convert X,Y coordenates in addres of spectrum screen.
I ...Best way to organise a multi screen game?Hi All, Does anybody know ay good ways to organise large multi screen game? Or any links to useful texts on the matter? In my previous single scr…
... to organise large multi screen game? Or any links ...
In my previous single screen game it was the simple ... and every time a screen change was needed I ... no good for a flip screen one.
... lookup table with x,y coords for each whole screen, but as ...yeah x 0.0.2first: [URL="http://www.yeah-unix.org/downloads/yeah_0.0.2.tar.gz"]the goods are at - http://www.yeah-unix.org/downloads/yeah_0.0.2.tar.gz[/URL] aft…
... like balls) bouncing around the screen. nothing special, really. except that ... with sdcc.
yeah x 0.0.2 tue may ... br /> - basic console output (clear screen, 8x8 font print at and ... /> - mouse device driver (just provide x,y and mouse buttons on read ...Made In Creative UK - Loading screen.I'm a UK developer, and so support Made In Creative UK [URL="http://madeincreativeuk.com/"]http://madeincreativeuk.com/[/URL] My ZX81 games now incl…
... to do something similar for X=Y=Z, and since there are ... one half of a loading screen, so at most 12 or ...ArtistryIn my younger days (and to a certain extent, now) I was always intrigued about how the loading screens were constructed. Back then I'd assumed it was…
... />
PAINT x,y,c1,c2
...where x and y are coordinates ... ,2,3 fills the entire screen, unless there's a blue ...Machine Code Sprites Example Code Using Char Based SystemBelow is my WIP code to do smooth screen wrapping sprites using char positions and offsets, as opposed to writing direct to a line (0-191) and shifti…
... />
bs1:
; Get x,y
LD A,(IX+1 ... Contains Screen Address
; BC preserved
; Example X=20,Y=10 ...IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
... />
bs1:
; Get x,y
LD A,(IX+1 ... Contains Screen Address
; BC preserved
; Example X=20,Y=10 ...Zaf-forth to Z80 compiler Build 5This forth like complier is changing almost every day with new items been added. Here is a new Zaf-forth word add it the sptword.fth file - which is…
...
procedure zxcircle ;"x y r zxcircle to screen"
int zxcirclex ;
screen"
;"random sizes abd random x and y"
... br /> ;"prints 8 spaces to screen"
."Random ... ?rrandom zxcircle
;"put x, y, and r on stack call ...Help needed with drawing masked spriteI need to draw a small sprite (16 bytes) on to the screen using a mask. Its the only sprite that will be used so speed isn't too important. I was goi…
... bytes) on to the screen using a mask. Its ... area of the screen (based on the sprite x,y). I would ... then draw the sprite to the screen ... mask. On the next screen update I would erase the ... the sprites x,y had moved to a different screen address then ...After Christmas maps and utilities :)Call Me Psycho [url="http://zx-maps.wz.cz/map.php?id=CallMePsycho"]http://zx-maps.wz.cz/map.php?id=CallMePsycho[/url] Commando1 [url="http://zx-maps…
... /> -------------------------------------------
Utilities:
ZX Screen Snapper 2.30
[url ... ) you can set the offset X/Y - number of pixels, which are ... when you locate the starting screen on wrong place in a ...z88dk + splib2: another question (sprite instancing)I'm making some tests with z88dk+splib2, with the idea of creating a game sometime in the future, and I have come across a problem. Let's suppose I …
... tiles and draw the whole screen with them. But, if I ... of the brick on the screen.
That means a ... to have many bricks on screen (*).
Is there a ... sprite 1 drawn at coordinate (X,Y), and also at (X2,Y2 ...Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…
... pixel spaceship on the screen based upon x,y pixel coordinates, which are ... Cybernoid in a totally black screen
I have ... /> 1/ Currently, I calculate the screen hl coordinates for each pixel ... errors due to the funky screen address system), but seems ...How to create pretty screenshot maps[size=+1][b]A. What will I need?[/b][/size] 01. Your favorite [url=http://www.worldofspectrum.org/emulators.html]Speccy emulator[/url]. 02. An util…
... =title.php%3Fid%3Dscreensnap]ZX Screen Snapper[/url] (supports almost ... favorite Speccy emulator, run ZX Screen Snapper (ZX SS).
... values correctly. [b]ZX Screen Snapper works on the background ... the map, color depth, step X/Y values, colors, etc. (look ...Pixel Explosion CodeJust a little snippet to cause explosive effects. It uses table lookups for the screen address, and can handle up to 32 pixel particles. A particle…
... ; screen
ret ; HL now has proper address for x,y ...
; 2 X Direction
; 3 Y Direction
; 4 X Direction Pause ...
