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Buffer to screen - how much?[FONT=Calibri][SIZE=3]I am starting to build a new game and am researching different ways to accomplish what I need to do. My question is, is it poss…
... similar - eight rows of pixel scrolling. Just instead of using ... a small number of 16x16 pixel-positioned sprites to keep ... For two pixel scrolling, you really need to consider four pre-shifted ... I did something similar for four-pixel scrolling on the ST (i ... -
Rock n Roll RacingI don't know if the isometric scrolling would be possible at a suitable frame rate on the Speccy, but I loved this game on the SNES and played little…
Take a look at [i]R.C.Pro-Am[/i] for a simpler 8-bit presentation, then maybe jazz up the track surround in the style of [i]Highway Encounter[/i]. Maybe a four pixel horizontal scroll and two pixels vertically. -
New Game: A Yankee in Iraq (2017). A shoot-em-up.Last year, I [url="https://www.worldofspectrum.org/forums/discussion/53207/new-game-2016-revival-a-yankee-in-iraq-1992"]resurrected my old shoot-em-u…
... seemed too easy, and the four-pixel linear copter movement felt somewhat ... what good is inertia without pixel-perfect graphics? Enjoy the silky ... -
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); } …
... know the horizontal and vertical pixel shift of the image within those ... -
How to improve my program using oversized numbersI'd like my dice program to print out the number four times bigger than normal if possible. Anyone know how to do this? Or I could write a sub rou…
... eight times (with a single pixel shift) creates the effect of vertically ... -
Smooth Screen Scrolling RoutineHi everyone, this is a follow up to the thread on smooth screen scrolling. As promised here is the code for the routine. It's pretty long and fairl…
... up the background at various pixel positions. The background data map ... into 4 positions, giving 2 pixel precision.
... A,B
AND 3 ;SHIFT POSITION 0-3
JR ... only need to
;draw four more columns
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…
... a screen about one pixel use Cursor Keys + SHIFT combination. Very useful ... back to the point number four of this solution.Xor-shift random number generator for Z80[QUOTE=Patrik Rak;320244]Come on, people, [URL="http://www.jstatsoft.org/v08/i14/paper"]xor-shift generators[/URL] devised by Marsaglia, that's the w…
... .org/v08/i14/paper"]xor-shift generators[/URL] devised by Marsaglia ... parameters for n=8 and four seeds (I first verified the ... ,1). Of these, the first four seem to do reasonably well ...Wanted: Four separate keys for Spectrum+/ZX128KHello, I am desperately seeking four separate keys suitable for ZX Spectrum Plus or ZX 128K (Toastrack) The keys: "SYMBOL SHIFT" " ; " "DELETE" …
... />
I am desperately seeking four separate keys suitable for ZX ... )
The keys: "SYMBOL SHIFT" " ; " "DELETE" "EXTEND MODE"
Optimal shifting for set pixel?Hi, I'm optimizing my set pixel code. For speed. But without using partitioned memory (i.e. a table on 256 byte boundary) I have optimal memory addr…
... /> I'm optimizing my set pixel code. For speed. But without ... a ; avoid special condition without shift / i.e. jr z
ld b,a ; our shift counter
xor a ; a ... =0
scf ; our shift bit
loop: rra ; to ...'Ocean Draw' instructionsHere are the instructions for the screen and sprite editor used in-house at Ocean Software, possibly typed up by Joffa Smifff (as the 2 of the sprite…
... UDG
QWEADZXC - MOVE PIXEL
NUMBERS CHANGE INK COLOUR ... . THIS IS REPEATED
FOUR TIMES. NB. THIS OPTION IS ... . (FOR ANOTHER FORMAT
SHIFT THEN CHANGE FORMAT OF
DIFFERENT FORMAT PRESS CAPS SHIFT
TOGETHER WITH THE ...The ULA and ScreenI've asked something similar before but please bear with me. I'm trying to understand the way the screen is controlled. The ULA controls output to …
... pixels.
[/quote]
Four pixels? The ULA grabs a ... pairs and uses that to shift 8 video pixels out -- you ... visibile changes in 8 horizontal pixel units. If you could make ... changes in 4-pixel units, the ULA would have ...The ULA and ScreenI've asked something similar before but please bear with me. I'm trying to understand the way the screen is controlled. The ULA controls output to …
... pixels.
[/quote]
Four pixels? The ULA grabs a ... pairs and uses that to shift 8 video pixels out -- you ... visibile changes in 8 horizontal pixel units. If you could make ... changes in 4-pixel units, the ULA would have ...ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... a software rotater to get pixel-precise placement of sprite ... sprite frame from eight to four) or only using pre-shifted ... . This draw function doesn't shift graphics at all.
< ... above it to accommodate vertical pixel placement. Normally, the blank ...ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... this new engine. Going to four bytes per 8 pixels: mask ... the sprite depending on horizontal shift in order to tackle colour ... ) into a fixed 8-byte pixel buffer (this is where all ...Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... "type" member selects one of four mountain graphics to use when ... shift of 16 pixels would draw the mountains outside the 24-pixel ... examine the mountains in the four mountain rows the plot occupies ... mountain graphic. Since there are four mountain rows in a plot ...Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... We will have four different isr functions ... for the four requirements above that ... = 16; // initialize current scroll shift
g_scrollPos = g_textBuffer; // ... to shift left one pixel, leaving the rightmost pixel ...Just for funJust for fun, imagine the Spectrum had a graphics mode where there were two attribute bytes per 8x8 block and each block had 2 bits per pixel choosin…
... attributes so that the four colours are different in ... more screen memory to shift around, but it would ... a lot faster, but not pixel-smooth.
... if you're allocating four colours to each character ... square. Selecting four from a palette of ...Just for funJust for fun, imagine the Spectrum had a graphics mode where there were two attribute bytes per 8x8 block and each block had 2 bits per pixel choosin…
... attributes so that the four colours are different in ... more screen memory to shift around, but it would ... a lot faster, but not pixel-smooth.
... if you're allocating four colours to each character ... square. Selecting four from a palette of ...50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…
... would take too long to shift them by an arbitrary number ... into a grid of 16x16 pixel blocks, and each block is ... line, that means there are four possible animations going on, which ...50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…
... also inserts some code to shift the stack pointer mid-way ... four whole buffers to do the pre-shifting for a 2-pixel ...Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
... got problems with more than four. Do you use a ... will need to pre-shift the sprites. The common ... then look-up the shift of the sprite graphic, ... the 2K required by the shift table above.
... black 16x16 square moving in pixel steps around the screen - ...Pixelwise scrolling sideways - how many ways to do it?Not that I need to, but I've been wondering if there's a good way to do this that I haven't considered. Scrolling [B]pixelwise [/B]vertically is "ea…
... ultimate speed optimisation, you pre-shift what will pass through fixed ... background. You load these into four registers and then prepare a ... earlier to do an 8-pixel scroll. In [I]Cobra[/I ...Exilei\'m sure this has been brought up before but couldn't find a thread in 'New Game Ideas'. Why did the Spectrum never get a port of the BBC game Exile…
... could do this in four colours with only two ... />
On a Speccy, four buffers, even if clipped to ... ].
For single-pixel scrolls you can use a ... go any faster than 1 pixel per refresh.
shift each one sliding into the ...Exilei\'m sure this has been brought up before but couldn't find a thread in 'New Game Ideas'. Why did the Spectrum never get a port of the BBC game Exile…
... for just two tile types (four combinations 0-0, 0-1 ... pre-shift them up to 8 pixels, and then to 2-pixel ... resolution, within a 24x16 pixel window, you're ... ]Cobra[/I] use something like four 64x16 strips, so 1K per ...28-character wide multicolour(ish) on 48k SpectrumLong-time lurker here... I've always been interested in rainbow effects on the 48k Spectrum, mainly from a perspective of "Just what [I]would [/I]ha…
... . That would limit you to four per row, or more if ... NOP, EX, or IX/IY shift instruction - but that'd take ... there were never more than four different attribute patterns on any ... of the screen, although the pixel patterns could vary. For example ...Add horizontal hardware scroll to ULA+In this case we must read a bit in the ULA+ for test if supported. And the future software that uses it must have to branch: 1. If hardware scroll i…
... invisible (so I understand), then pixel scrolling the screen around within ... and lower borders in by four pixels each to get 24 ... done in stages with each pixel of movement.[/quote]
shift a decently-sized bitmap around ...SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... the form, used four times
...
rrca ; shift three
rrca ... a, 8 ; pixel line count
...Scrolling Bi-Colour Engine for 4-Player GamesJust putting this code up for people to have a look at. Far from finished. Should simply compile and run a bit of a demo. Only good for 128K and +…
... rough because it's 2-pixel high bands of colour moving ... scroll it. The engine can shift the entire attribute file up ... one frame; it can't shift all the pixels that quickly ... about some mini-games for four players (played individually or in ...FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…
... of two masks -- the left four pixels set or the right ... four pixels set. You apply the ... can vary from one set pixel to all 8 set pixels ... is that fzx has a 'shift' that avoids having to print ...
