-
How would you approach parallax?So ... there is this trick by Joffa that we all know...of waiting for the ULA to reach certain pattern on the screen using the IN command. And then s…
... store a nibble to be introduced to the screen on the right ... I start scrolling the screen when screen ray leaves the drawing ...
;; the mask to introduce to rightmost screen 2px
;; hl is ... (hl),a ; and write back to screen
dec l ; next 8 ... -
Fast way to clear the screen ?So I was wondering fastest way to clear the screen. I've tried this and this works but is it better than CLS ? LD HL,16384 LD BC, 6144 Loop…
... faster, although you'd struggle to get enough speed for 3D ... />
You'll probably need to write your own Draw functions ... back-buffer instead of direct to screen, you'd be implementing your ... -
ZX GameDev tools consolidatedHello WoS! It's been a while, yet with a plenty of decent gamedev tools (including new ones!), is there a [i]single/pivot table[/i] or some datash…
... 'dirty' (changed) pos to redraw instead of full screen redraw--is such ... to a 8/9 byte back buffer which is then copied to screen ... . Because the screen is never erased there ... Game logic happens after the screen is drawn and, in the ... -
A game you want to love, but can't...but keep trying...but can't...but keep trying...ad infinitum!You know, one of those games where you think you might just be missing something. For me, this game is Tynesoft's Auf Wiedersehen Pet. I loved the te…
... , etc but ... no idea what to do. [/quote]
Read ... many attempts I was able to reach screen-03 and sometimes (if ... by huge luck) I went to screen-06. Then, Speccy Tour 2001 ... can do to improve, I become able to regularly reach screen-14 (hi ... -
HELP!I'm trying to replace a bit in a byte as follows, but having some sort of brain freeze trying to get it to do what I want. A=00 if bit to replace …
... of those tricks that tend to come unexpectedly handy in ... is the fastest "masked sprite to screen" code I've seen. If ... sprite pattern and HL pointing to screen byte it should work. For ...
(hl)= 10101010 (=your screen pattern)
cpl a= 00110000 ... -
Project: ZX OpusHello my friends, I have been in need of a push lately so I thought if I post some of the work for this project here you guys (and gals) can help me …
... need? well to LEARN how to draw spectrum graphics to the screen either in ... to attribute address". The function "asm_zx_cyx2saddr.asm" means "character Y,X to screen ... address" (screen address means the pixel area ... -
User-friendly UDG banks/sheetsHello, retro-colleagues) Sometimes I still play Speccyal games and try funny things in BASIC, but one thing keeps me slow: [b]sprites[/b]. Alright…
... a system that takes Spectrum SCREEN$ and lets a user select ... ZXSpin as a binary file (to screen area, 16384) & then select ... -
ZX-Draw (Maraf-Soft). New utility for vectorial drawingThe author seems to be asking for feedback and features suggestions. http://calentamientoglobalacelerado.net/ZXdraw/ This other tool looks like u…
... options and the ability to output the image data ... drawing that data to screen?...
The ability to Import/Export ... the user the ability to design their graphics using ... applications they are already used to using... Nevertheless, SOME drawing ... -
ZXSCLZF - Yet another Screen CompressorQuick disclaimer before I continue, this compressor does not shrink screens as small as some of the others posted here, in particular the very good z…
... 7t - move into screen memory (basically add 16384 to the offset)
screen to another
_ulzfa040:
to be a spectrum screen\n");
... buffer_ss=buffer+_START; // move screen check start to start of buffer attr ... -
Flicker free animation in BASIC, is it possible ?With all my various noodlings in BASIC and indeed with my so far limited assembly I keep coming up with the same issue. How do you do animations wit…
... on speed it's only to print when a key is pressed ... before movement in print:
- TO LEFT: "X "
- TO RIGHT: " X"
to left)+2*(condition to right)
100 PRINT AT Y ... -1: goto 110
102 PRINT AT Y,X;" X": let ... -
Flicker free animation in BASIC, is it possible ?With all my various noodlings in BASIC and indeed with my so far limited assembly I keep coming up with the same issue. How do you do animations wit…
... on speed it's only to print when a key is pressed ... before movement in print:
- TO LEFT: "X "
- TO RIGHT: " X"
to left)+2*(condition to right)
100 PRINT AT Y ... -1: goto 110
102 PRINT AT Y,X;" X": let ... -
[NEW] Speccy for Android ReleasedHello, All! A while ago, I have released the Android version of [i]Speccy[/i], my ZX Spectrum emulator. It emulates Spectrum 16k, 48k, 128k, +2, +2A…
... this permission is required to get phone's IMEI ... have now switched from IMEI to AndroidID for device identification. ... use AndroidID rather than IMEI to identify users.
* ... * Fixed crash when blitting image to screen while exiting.
* Fixed ... -
Beginner's z88dk help rqdI'm struggling to get my first z88dk C program to compile. My program is this: #include <spectrum.h> int main() { zx_border(INK_BLACK); } …
... a library that finds the screen address from coords 0-31x ... />
cxy2saddr = "character x,y to screen address"
zsdcc generates ... -
z88dk : Support FunctionsJust a quick one here, I am looking to doing some dirty dirty code with C and load a screen$ file from the disk using "system( command )" - yes I …
... Load header i.e. discard to screen buffer
LD DE,17 ... LD IX,screenfile ; Load screen bytes to screen buffer
LD DE,$ ... -compress if required or LDIR to DFILE.
... P.S. if using zx7 to generate a variable length compressed ... -
off screen bufferwhen using an offscreen buffer is the memory copied to the screen in a way that makes it easier to draw sprites to the buffer? E.g. Lets say you…
... which will copy buffer to screen and take into account ... - just the same as Spectrum screen memory is organised
screen columns - 1st column from top to bottom, 2nd ... in buffer very easy way to calculate coordinates:
... -
off screen bufferwhen using an offscreen buffer is the memory copied to the screen in a way that makes it easier to draw sprites to the buffer? E.g. Lets say you…
... /> LDI background from buffer to screen to delete
OR the ... back to left
call nextlinedown ;DE down one screen ... : ;move DE down one screen line
inc d< ... spriteOR:
...directly onto the screen and quickly...
... -
Emulator with print function?Is there an emulator that can LLIST to a standard printer? Speccy does have a function to dump a graphical version to a text file, but it's a pain th…
ZEsarUX can print to a txt file and to a bitmap file -
Is reverse engineering software now illegal?I just remembered (in conversation with someone earlier) that I read some time back that the Digital Millennium Copyright Act made it illegal to reve…
... plagiarism.. harry price comes to mind straight away.. many ... freescape was mentioned with regard to the earlier "i , ... things like addresses relating to screen etc. I remember watching ...
gyroscope.. they had to officially license marble madness
ZX-Uno moddingStarting with ZX-Uno case modding I have not yet received my ZX-Uno yet (it is in the post) but I know that I will have to do at least one mod …
... , and allow this thread to continue to be "mainly" ZX-Uno ... test use to provide keyboard ,USB facilities , screen and hopefully ... non specialized way with access to screen ,sound , keyboard and power ... the screen and the game controller. So it seems to be ...Loadsa bullets on screen (silkworm)Did games like silkworm just draw everything to the screen or did they have complicated optimisations? and the types of games where sprites can occu…
... silkworm just draw everything to the screen or did they have ... br /> Sikworm draws everything to buffer in this order: ... to screen buffer.
When everything is drawn, LDI copy moves screen buffer to screen ... is redrawed directly in screen, it is not part ...Need help from people with real 128/black +2 and grey +2A/+2B/+3.Please, if you have time and inspiration, run [url="https://www.worldofspectrum.org/forums/discussion/55518/test-of-screen-switching-timings"]this t…
... test makes short switch from screen 0 to screen 1 and back, with ... like most of machines allow screen switching occurs between pixels and ...im looking for a double size, height and width character programi want to be able to stretch and scale up udg's
... de,$4000 ;load DE with screen address
ld a," ... hl ;bitmap addr into DE, screen addr into HL
< ... ld bc,32 ;add 32 to screen addr
add hl,bc ... (hl),a ;put it on screen
inc h
...
;(it's safe to only increment E)
; ...im looking for a double size, height and width character programi want to be able to stretch and scale up udg's
... de,$4000 ;load DE with screen address
ld a," ... hl ;bitmap addr into DE, screen addr into HL
< ... ld bc,32 ;add 32 to screen addr
add hl,bc ... (hl),a ;put it on screen
inc h
...
;(it's safe to only increment E)
; ...Cubic RevealI just though I'd develop this a little further. Written a while ago on a whim! [img]https://dl.dropbox.com/s/p44y5dda49ucmop/square_reveal_1_1.gi…
... br /> or 87h ;point to stored screen address
ld d ... /> res 7,d ;point DE to screen
ld (de ... ld e,l ;point DE to screen equivalent ATTRs address
ldi ...Cubic RevealI just though I'd develop this a little further. Written a while ago on a whim! [img]https://dl.dropbox.com/s/p44y5dda49ucmop/square_reveal_1_1.gi…
... br /> or 87h ;point to stored screen address
ld d ... /> res 7,d ;point DE to screen
ld (de ... ld e,l ;point DE to screen equivalent ATTRs address
ldi ...Cubic RevealI just though I'd develop this a little further. Written a while ago on a whim! [img]https://dl.dropbox.com/s/p44y5dda49ucmop/square_reveal_1_1.gi…
... the Calculate Attr to screen address part from 10 to 8 bytes thus ...Cubic RevealI just though I'd develop this a little further. Written a while ago on a whim! [img]https://dl.dropbox.com/s/p44y5dda49ucmop/square_reveal_1_1.gi…
... not 0-7 then skip to next
push hl ... a map of which lines to mask or ignore
... /> res 7,d ;point DE to screen
ld (de),a ... 7,d ;point DE back to stored scr
nlu:
Cubic RevealI just though I'd develop this a little further. Written a while ago on a whim! [img]https://dl.dropbox.com/s/p44y5dda49ucmop/square_reveal_1_1.gi…
... table
;fade in the screen display file
;
; ... not 0-7 then skip to next
push ... a map of which lines to mask or ignore
... /> res 7,d ;point DE to screen
ld (de), ...Cubic RevealI just though I'd develop this a little further. Written a while ago on a whim! [img]https://dl.dropbox.com/s/p44y5dda49ucmop/square_reveal_1_1.gi…
Cubic RevealI just though I'd develop this a little further. Written a while ago on a whim! [img]https://dl.dropbox.com/s/p44y5dda49ucmop/square_reveal_1_1.gi…
... table
;fade in the screen display file
;
... - 48960 just below the stored screen
;stored picture must ... a map of which lines to mask or ignore
... /> res 7,d ;point DE to screen
ld (de ...
