-
Any Errors?Any errors you feel Sinclair Research or even Amstrad made with the speccy??
... able to plot at a pixel position = PLOT x,y;"Hello" would`ve been ... -
Any Errors?Any errors you feel Sinclair Research or even Amstrad made with the speccy??
[quote]
On 2004-03-10 00:45, MatGubbins wrote:
Being able to plot at a pixel position = PLOT x,y;"Hello" would`ve been very helpful indeed.[/quote]
That's not plotting though - that's printing. -
Any Errors?Any errors you feel Sinclair Research or even Amstrad made with the speccy??
... able to plot at a pixel position = PLOT x,y;"Hello" would`ve been ... -
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 …
... convert an x,y coordinate pair (pointing to a specific pixel) to the ... the block that contains that pixel.
I searched on ... -
Textured Scanline Flood Fill for ZX Spectrum 48KPity that it's quite hard to contribute code to WoS in a straightforward manner. Recently, I have created a textured/hatched fill M/C routine for the…
... TO 20
110 LET x=40+RND*176
120 ... LET y=40+RND*95
130 ... +RND*30
140 CIRCLE x,y,r
200 REM ... POKE 63694,x: REM x
220 POKE 63695,175-y: REM y
Sort 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 ... and build a max heap from the data, may implement min_heapify ... that is in the wrong position relative to the others.
// from heap
for (int i ...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, ... demo which can be download from:
[as TZX]
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 my site at:
x=y=z.zip"]http://http://www ... .bobs-stuff.co.uk/extras/x=y=z.zip[/URL]
Speccy machine code info where is it?Recently I've been trying to learn Z80 and I've managed to make limited progress (some of my routines even compile now!) but I seem to be having trou…
... byte to plot, as bit position from the left. Here it's ... you to change from x,y coordinates to screen address and pixel mask. Most ... ,down,left or right from the current position. You will soon figure ...Howto paint a squared zone of the screen ?You know what guys ? i begin to love this languaje. Cant understand why not put more effort on the 80's to learn it :( because it is really speedy. …
... of the area for one pixel if you want to ... , we have to calculate the attribute area address from X,Y coordinates
< ... , we have to calculate the screen area address from X,Y coordinates
... screen line, calculating it from the given current address
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 ...BIFROST* example: "Knights & Demons DX" source codeA package containing the source files of our multicolor game "Knights & Demons DX" is now available for download [URL="http://www.mediafire.com/?hbch…
... player presses a number from 1 to 3, then ... LET x = 4: LET y = 4 ' set initial cursor position
selectTile(x, y) ' ... 0 THEN unselectTile(x,y): LET y = y-1: selectTile(x,y): GO TO 400 ...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 …
... the screen memory locations for pixel data and then colour data ... from,X,Y,screen to,X,Y,0x00) co-ordinates are x=(X-12)div 4;y=(Y- ... data: 6 bytes (screen,X,Y,ScreenA X,ScreenA Y,0x00) co-ordinates as ... Data: 4 bytes (Screen,X,Y,direction) co-ordinates as above ...Reason for strange display layout?I have always wondered if there is any technical reason behind the strange layout of the display file or why did Sinclair choose to do it this way?
... /> LD SP,VRAM_TABLE + 2*Y-position
POP HL first line ... the position), you might use similar principle. Getting any VRAM address from X,Y ... />
LD A,_positionX X position (0-31) is MSB part ... _positionY
ADD A,A Y position (0-127) is now ...Bresenham's line algorithmHelp - I really am struggling to get my head around this algorithm. I don't know why, I coped with Cordic (SIN/COS) and integer divide routines (/10 …
... DRAW A LINE' from last position to X,Y
510 ... Y
530 LET X=ABS X: LET Y=ABS Y
540 IF X> =Y ... 550 LET L=X: LET B=Y
560 ...
580 IF X+Y=0 THEN STOP
Howto paint a squared zone of the screen ?You know what guys ? i begin to love this languaje. Cant understand why not put more effort on the 80's to learn it :( because it is really speedy. …
... h,10 ;y
ld l,10 ;x
... have to calculate the attribute area address from X,Y coordinates
y*32
add hl,de ;+#5800+x, ... have to calculate the screen area address from X,Y coordinates
from the given current ...Help needed with calculating screen addressesCan anyone help me finally crack Jonathan Cauldwell's screen addressing calculator and, more to the point, is the reason I'm struggling because this …
... ....for a given screen pixel coord of x,y, where y=0 zero is ... = bit 0 of x, y4 = bit 4 of y etc.
then the address of that pixel is ... and the result was for from a "best" routine.Drawing a dotted line...Hi Folks, I cannot be the first person to want this (?) so here goes! Does anyone have a MC routine that does the same as the BASIC DRAW command bu…
... SET, then RESet every other pixel in the line as its ... /> Calculate next pixel address
over 0
plot x,y
Calculate next pixel address ...
plot x,y
over 1
plot x,y ...RGB to VGA convertor for ZX (clones)[img]http://s44.radikal.ru/i106/0908/1a/28c90d0ca25b.jpg[/img] [img]http://s15.radikal.ru/i188/0908/f2/c1d66b5f6d4f.jpg[/img] It's GOOGLE translatio…
... work with ZX128. (must calculate pixel clock from original ula clock):
[img ...Help required to calculate screen addressesDoes anyone have some code that calculates the screen address one pixel below the given address ? Is it best to use a lookup table ? Any examples of …
... forum that calculates an address from X,Y values but would prefer to ...The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... 50Hz update is visually discernible from a 25Hz update but the ... don't have to convert from x,y to screenbuffer offset, no copying ...Wiwo DidoI started coding a new game for the ZX Spectrum called "Wiwo Dido". This is not only the name of the figure, but also short for the action it can d…
... game I added 4 pixel movement in x/y-directiom after having 8 ... pixelmovement in x and 2 pixelmovement in y ... as a 5x8 and 3x8 pixel character, thus simply simulating ... of Wiwo Dido have 2 pixel x/y movement and all characters are ...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 …
... is stretched/squashed one pixel in the x/y axes respectively, as can ...Arcade Game Designer 3The latest version of the arcade game creation tool for the 128K Spectrum. AGD 3 now boasts pop-up menu and inventory facilities for arcade adventur…
... to B |-OR-| SUBTRACT 2 from C
ENDREPEAT[/CODE]it ... how to move a sprite from X;Y to A;B at the ...Arcade Game Designer 3The latest version of the arcade game creation tool for the 128K Spectrum. AGD 3 now boasts pop-up menu and inventory facilities for arcade adventur…
... B |-OR-| SUBTRACT 2 from C
ENDREPEAT[/CODE] ... how to move a sprite from X;Y to A;B at ... less typing, TO and FROM are interchangeable, so SUBTRACT ... have to divide the x and y distances by the number ... adding that to the x and y coordinates. Moving to a ...
