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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…
... example, if I wanted to "plot" pixel at screen coordinates 50,50 ... -
Some issues with my UDG programFor the sake of remembering how to do some things in Basic, I started coding a small program that could be used to create UDGs: [url]http://db.tt/tt…
... still be present. Setting a pixel with Space always did what ... if 0 and vice-versa, plot pixel with over 1 in expected ... sometimes fail to draw a pixel in the big grid. After ... -
Drawing some spritesI figured I want to draw some sprites. My target was to do a 16x16 masked sprite. There's no clearing here, just drawing the sprites. My first ite…
... br /> ld a, (de) ; load pixel from screen
and (hl ... or (hl) ; or the pixel data
ld (de),a ... ; put modified pixel to screen
inc hl ... /> ld (hl), a ; plot pixel to screen
inc hl ... -
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…
Pity 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 ZX Spectrum 48K. It was for a text/graphic adventure I'm working on. The algorithm is based on [url="http ... -
line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
... br /> ;
; Draw a pixel line from (x0,y0) defined ...
; ******************************************************************
; Plot pixel at (x,y) coordinate.
line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
... br /> ;
; Draw a pixel line from (x0,y0) defined ... />
; ******************************************************************
; Plot pixel at (x,y) coordinate.
TommyGun - Utility ... what's going on...For those interested, Tony has been busy lately and unable to put as much time into TG as he'd like. He also has a child on the way soon. He told me…
... . (even though the code to plot the points could be)
pixel it on the editors internal ... the images frame buffer. The plot pixel function will invalidate the image ...What was the worst game you brought ?Only games you paid for please :) Myself i think it was Alien Kill (Mastertronic) Apologies if the author is on here :oops: But even at the time…
... . I assume you needed to plot pixel perfect path on the black ...What was the worst game you brought ?Only games you paid for please :) Myself i think it was Alien Kill (Mastertronic) Apologies if the author is on here :oops: But even at the time…
... . I assume you needed to plot pixel perfect path on the black ...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…
... example, if I wanted to "plot" pixel at screen coordinates 50,50 ... ]
Just call the PIXEL-ADD routine in ROM. Details ...64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…
... br /> ld (hl),255 ; set pixel
ret
[/CODE]
or $0f ; set pixel on even side
ld ... attributes on screen every 4 pixel lines. This "multicolor render" ... , whenever you want to plot pixel color N at a certain ...Were there other graphic modes for the ZX Spectrum?I've read that there was a "hi-color" mode that allowed the color clash to be 8x1 instead of 8x8. Maybe I have the name of that mode wrong. I'm…
... programmers discovered that they could plot pixel by pixel by using their own ...Z88DK NOOB cplot INK colorHi I am a complete NOOB with Z88DK, I am trying to draw colored circles. How does ink, paper and border work with Z88DK. I started trying to wo…
... character coordinate or pixel coordinate. These functions ... /> ld (hl),a ; plot pixel
call ... hl = attribute address corresponding to pixel
pop de ... /> ld (de),a ; plot pixel
ex ...Rom routine for pixel addressDear all, Having my bi-annual 'lets try machine code' project again and have come up with a problem with the pixel address rom routine at 8874. …
... with a problem with the pixel address rom routine at 8874 ... to do the equivalent of PLOT 0,175 with the following ...FAST PIXEL DRAWINGI'm looking for the fastest way to put a pixel to the screen (on spectrum ofcoz:). Here is my own procedure (written in PASMO). But I don't how do it…
... fastest way to put a pixel to the screen (on spectrum ... me?
;============================================================================
; put pixel
; d = x
; e ...Pixel setting / general speccy codingi just started doing some cross-coding with the [url="http://www.bigfatpanda.fsnet.co.uk/z80.html"]Z80 SNA assembler[/url] and an emulator, and this …
... up with for xoring a pixel at a given screen coordinate ...4-pixel scrollingDo you think is 4-pixel scrolling accetable for horizontal shooter ? (aka do u like Chronos ? :)
Do you think is 4-pixel scrolling accetable for horizontal shooter ? (aka do u like Chronos ? :)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…
... can handle up to 32 pixel particles. A particle dies when ... /> [code]
; *****************************************************************
; Title: Pixel Explosion
; File: pixel01.asm ...Ways to use double buffering in basicI was meddling with woody's print stream code where you can print characters at any pixel location on screen. I was playing with 12 sprites, very ann…
... can print characters at any pixel location on screen. I was ... about other commands like DRAW, PLOT, etc. ? is there any workaround ...Help understanding some z80 asmI'm trying to work out how to represent the structure of a "sprite" in the SAM as "Grabbed" by SmallC. I can see the assembler implementation but I …
... time doing an array to pixel using plot mechanism (yuck) then doing ...Something completely different (new game tech-demo)Since finishing Stranded 2.5 (available soon from Cronosoft - plug!) I've been playing with the idea of doing an attribute-based, rather than pixel-b…
... an attribute-based, rather than pixel-based, game, and you can ... I have temporarily lost the plot?! All comments welcome!
Every pixel different color on spectrum is it possible?I remember reading somewhere about a hardware modification that could make spectrums have 1 different color per pixel.This would make the color clash…
... have 1 different color per pixel.This would make the color ...help sought with first foray into machine code - pixel scrolldownI have started to code my first machine code program, a simple roadrace game. I've based it around the pixel scrolldown routine in 40 Best Machine Co…
... 've based it around the pixel scrolldown routine in 40 Best ... />
[code];scroll down 1 pixel at a time
org ... times we're repeating the pixel scroll
dec b ; ... scrlcount ;otherwise continue with another pixel scroll
endroutine
ret ...the Plot - how to play?anyone tried to play this thingy? even with kempston chosen can't find the proper way to use the controls and to do anything :confused: just able …
... .... is this all of the plot down there?
(no passing ...Retro-X Alpha availableChanges from WIP 7 (Alpha 3) to Alpha 4 ( 1.5.08 - 14.5.08 ). Requested by and help by - in brackets. Bugfixes: * Viewer: o File list not displaye…
... Mode 3
o Screen Plot improved a bit, should be ... : ATM Turbo Lowres (Colour per Pixel) Colour and monochrome, ATM Turbo ... /> o ATM Turbo Colour Per Pixel mode included
o Filled ...8 pixel scrollingJust been playing Gunrunner (always forget how much I love this game, probs cos it's VERY hard) and wondered what other games use 8 pixel scrolling A…
... what other games use 8 pixel scrolling AND are decent to ... seemed that if an 8 pixel scroll was used then unless ...Fastest way to decide which pixel to paint in order to draw a straight line(after I saw "Bresenhams circle algorithm" in development forum, I decided to ask this in here) in fact, I want to accelerate a car towards a direct…
... move the car to next pixel. since target changes position in ... iteration, so a new path/pixel must be decided every iteration ...Do you know any Spectrum game with small 8x8 pixel sprites ?Do you know any Spectrum game with small 8x8 pixel sprites ? I guess majority of games used 16x16 pixel sprites, like 99% of games :) I can not find…
... Spectrum game with small 8x8 pixel sprites ?
I guess ... majority of games used 16x16 pixel sprites, like 99% of games ...[SpecOS] Question about OVEROk folks, this one has me (and a few friends) stumped. How would you implement OVER in SpecOS? Bear in mind that I'm after an algorithm which I appl…
... which I apply to each pixel plotted (whether in a PRINT ... , DRAW, PLOT etc), and information available is basically the destination pixel's ... 256 colour screen where each pixel can have its own colour ...A fast DRAW routineI was investigating how to speed up the line drawing for the [URL="http://www.worldofspectrum.org/forums/showthread.php?t=20225"]BASIC compiler[/URL]…
... COORDS.
[*]Plot address and pixel mask were being calculated ... on each plot, but ... to memory on each pixel PLOT (slooow), when it ... for later
; A' = Pixel mask
; H'L' = ...
