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Jetset Willy 2015 - Bug Fixed EditionLots of minor fixes to the original without distracting or modifying it to any great extent. Take a look at the link (with screenshots etc) to see:<b…
In JSWII if you jump from the top of Dr. Jones ... the spikes simply had a pixel moved down. In original JSW ... 't step over them to position yourself like you can in ... JSW released without that extra pixel height on the fire cells ... -
And round and round you go...<span style="font-family: Arial, Verdana; font-size: 10pt; line-height: normal;">The recent Tir Na Nog post got me thinking about games where, even w…
... - Bleh!
As for Gift from the Gods, I totally agree ... have to treat each floor (row) as an individual map. The ... to different floors regardless of position. -
My first Greasemonkey script, up for testingI've decided to play with Greasemonkey and javascript today. (Greasemonkey is an add-on under Firefox)<br><br>Here's my first script written purely f…
... screen */
nav {
position: fixed !important;
width: 100 ... /> }
/* Stuff leftover from the previous edit */
/*
.Row, .TextBox, .InputBox, .PopList, .Dropdown, . ... -
New Game: COMPLICA DX<div style="font-family: Arial, Verdana; font-size: 10pt; font-style: normal; font-variant: normal; line-height: normal; font-weight: normal;"><img s…
... :
; -----------------------------------------------------------------------------
; Calculate evaluated score for specified player ... /> ; player, in all directions from every board position.
;
; Parameters:< ... -
TV Pal, odd and even framesI have been researching, but haven't found any real interesting information on this subject, so far. What I mean is, since TV PAL signal is interl…
... scanline effect, but only from every other pixel.
Compare that ... /RGB signal (like we did from an ST) and you can ... moving, it will have changed position between one frame and the ... panning shots in video converted from NTSC to PAL (common in ... -
Chessboard and piecesLast night for no particular reason I made a chessboard and pieces. [url=https://dl.dropbox.com/u/9498358/chessboard.szx]Chessboard[/url] [img]https…
... 64 byte table for game position.
[code]
defm "rnbqkbnr ... to use a narrow font from fzx to fit both white ... black move on the same row. -
Peeking the contents on screen? How?You will have to forgive me for growing up on the C64, but I know I can peek the location of a character (1024 is top left from memory) and the peek …
... coming to a 48K Spectrum from a C64.
from what you can see ... stepping in to read from it can slow down ... the top pixel line right across the first row of characters ... more sensibly from address 22528, 32 bytes per row, for ... -
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…
...
SCRROW6 = 0x4600 ; screen row 6
BYTSROW = 32 ; ... ex de,hl ; easier to calculate
;; scan line 0 ... :
call vid_nextrow ; next row
pop de ; restore ... /> rla ; move y3-y5 to position
rla
and ... -
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…
... next scan line starts at position 18 and needs just two ... (using hi-res x coordinate from 0 to 254) you shift ... serves the purpose. You could calculate shift as (screenshifts
- memshifts ... it possible to use asm from C. C pushes function arguments ... -
z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…
... the PRINT command requires the row/Y/vertical value to be ... n' subtracts the value 'n' from the value in the A ... the row & column, so they just set the current PRINT position ... -
z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…
... />
[code]ld a,21 ; row 21 = bottom of screen.
from ycoord. If i'm understanding ... character/sprite in the correct position. Without it nothing is displayed ... channel.
;ld a,21 ; row 21 = bottom of screen.
z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…
... character cells or pixels from the top of the ... number of characters or pixels from the left edge. If ...
[code]ld a,21 ; row 21 = bottom of screen.
position of the ycoord accordingly ( ... be going back to BASIC from a real game, but ...z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…
... fair i've learned more from Jonathan's guide and the ... ran again from basic it starts from its original start position by editing ... on.
ld a,21 ; row 21 = bottom of screen.
Angles and blocksHelp! Sprites! Blocks! Angles! I have a sprite that has a choice of 64 angles, and want it to deflect on collision with blocks. http://i1142…
... white sprite was originally one pixel above and to the ... it's shown. The row of blocks below it is ... /> But step back a pixel and look to the right ... crossed its boundary, so position it back at the edge ... Again, based on its prior position, there are no blocks in ...Advices for double buffering ?Hi, I'm currently coding graphics routines for a forthcoming game, I use a double buffer (the dummy screen is at $e000, the code at $8000) to pro…
... you really need to copy from buffer to screen, you have ... before raster beam renders last pixel line in next frame).
from buffer to screen what really ... enemies in next frame, then calculate and move player in another ...Full-screen 32 columns bicolor engine NIRVANA+I'm glad to announce the release of [b]NIRVANA+ ENGINE[/b], providing support for bicolor graphics (multicolor 8x2) in 32 columns for all standard Sp…
... screen, POKE a new sprite position, and NIRVANA will automatically draw ... is tricky, since it requires pixel precision. The player can get ... be worse than color clash from original game in same situations ...IN and OUT in hardware terms... what are 'ports'?Hi all, I understand PEEK and POKE, but have never managed to get my head around IN and OUT. The books all go on about how they read from and wri…
... allowing them to request from locations from 0 to 65535, but ... [i]alter[/i] the position of the keys. So this ... ] want to scan the row in question, and a ... are not interested in the row.
You ... keyboard, but not the exact row. Similarly, port $0ffe ( ...RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
... ; A contains character
; Calculate location of the character font ... address
; Calculate location of the first byte ... page row
adc a,70h ; add screen MSB (from $7000 ... screen (1 blank + 7 from font data)
ld ...New game: PIXEL QUEST![img]http://i61.tinypic.com/2s76e7t.png[/img] [img]http://i61.tinypic.com/3168bnn.png[/img] [img]http://i57.tinypic.com/n1chds.png[/img] [img]http…
... nowhere near as slick as Pixel Quest, it does have a ... headers based on the cursor position.[/quote]
That's ... ]Pixel Quest[/b] to add this feature. Please download it again from ...Ninjaman 8-way scrolling 50Hz multicolour demo :-)Here's a demo I've been working on for a while. The goal was to make the best scrolling routine possible on a humble 48K ZX Spectrum. I was origin…
... the screen row addresses from a table and diverting un-needed pixel rows ... addressing to do the 8-pixel horizontal step. It draws ... row, before it collides with the next colour change coming up from ... it is leaving a single pixel row where the colour steps mid ...Ninjaman 8-way scrolling 50Hz multicolour demo :-)Here's a demo I've been working on for a while. The goal was to make the best scrolling routine possible on a humble 48K ZX Spectrum. I was origin…
... to pick the vertical start position, which is what allows ... enemy sprite", "draw one row of the player sprite", or ... "draw one row of tile bitmaps", for example ... to write down a row of attributes has a ... you need something to calculate it for you.ZX81 Character SetHello, hope I don't offend anyone with my request. I've put together a program on my Amstrad that redefines a condensed text and displays it appropri…
... , otherwise move to the next position. I don't know how ... ZX81. There are no pixel addressable graphics available from BASIC, PLOT and ... bytes if you stored each pixel as a number, for even ... to render each proportional character from BASIC.Spectrum Screen RAM layoutHi there The spectrum screen layout is rather odd. It seems to be arranged into 3 256 byte groups. If I have an x (horizontal) coordinate (from…
... :
The address for a position on screen can be expressed ... />
If you take your pixel row number in binary as eight ...Knight Lore disassemblyHi, Not quite sure if this belongs here or in "Games" but figured it's more likely that developers would be interested. I've just released the …
... changing data formats (separating pixel and mask data which will ... sprites have masks equal to pixel data, so rendering mask ... suspect the routines that calculate overlap/intersection take some ... even generated coloured sprites from the video artifact output of ...Disappearing/appearing effectI remember doing a small routine in BASIC which could be used to cover the attributes section randomly, until all 704 characters were filled with the…
... starting at a different SEED position the pixel coords table gets rearranged ... pixels #
rst $28 ;FP_CALC calculate R mod U
defb ... /> ld b,(hl) ;BC=yx=pixel coords
ld de,(P2C ...P.O.W.As far as I know, a port of P.O.W. (Prisoners of War) from NHK, doesn't exist. [img]https://cld.pt/dl/download/61d19b5e-453b-489c-b17b-d3ed6fccd594/…
... time your buffer copy output position is way below the raster ... T states in a single-pixel horizontal line, so 20 * 8 ... where the extra time comes from so to speakNew Game: Vallation.Okay, this has been hinted at by both Redballoon and me a couple of times, but the damn thing is finally done now. :-D [b][url="http://tardis.dk/w…
... - the below screenshot is from the 27th - so that's ... 't completed it all from the start yet. I ... is moving in 2 pixel jumps at mostly 50 ... can calculate that. I had it moving 1 pixel at ... ="goodboy;866915"](and nice protection from infinite lives)
New Game - Cap'n Rescue: ReprisalHello, I'd just like to announce my new game Cap'n Rescue: Reprisal for the ZX Spectrum is almost complete. This is the third game in the series…
... - If we enter a room from the right, but then we ... .
TIP: You can save position player enters a screen, so ... awkward. It seems that a pixel more, and we are killed ...New Game - Cap'n Rescue: ReprisalHello, I'd just like to announce my new game Cap'n Rescue: Reprisal for the ZX Spectrum is almost complete. This is the third game in the series…
... - If we enter a room from the right, but then we ... .
TIP: You can save position player enters a screen, so ... awkward. It seems that a pixel more, and we are killed ...New Game - Cap'n Rescue: ReprisalHello, I'd just like to announce my new game Cap'n Rescue: Reprisal for the ZX Spectrum is almost complete. This is the third game in the series…
... to you, is that falling from (jump height + step down ... Player is standing on plataform position that will show a problematic ... the Cap'n moves pixel by pixel rather than in 8 ... pixel jumps as in BASIC ... right, there is a pixel near shoulder that seems to ...
