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Writing to the screen from a bufferI?m designing a game and am spending a bit of time trying different ideas before I commit my self. I?m currently thinking of writing data to a buffer…
... data to a buffer and then writing this ?back buffer? to the screen ... screen be drawn from the buffer without flicker ? If not, what ... -
Using the stack to blit bufferI was using a ldir to blit my back buffer to the screen RAM, and it was working pretty well if not rather slow. After reading about using the stack …
... a ldir to blit my back buffer to the screen RAM, and ... like:
ld sp, buffer
pop af
pop ... -
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…
... it possible to copy a back buffer of size 4096 bytes to ... -
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…
... text is drawn into a back-buffer, which is not the case ... text to a 0-terminated buffer and then call fzx directly ... /> The fixed location binaries that Einar (and Andrew) are releasing make ... -
Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
... a) Background is copied to buffer
b) Sprites drawn ... on buffer
c) Buffer copied to screen
buffer, draws the sprites and ... INITIM2
; Fill Back buffer with a bright stripy pattern ... -
Smooth Masked Sprites using fast page flip on 48k Part 2Ok, After all the suggestions in Part 1, which were all excellent (Thankyou), I opted on the following: I have 2 x 6k Offscreen areas (Yes, that's …
... platforms etc.
BUFFER (6k):
This contains ...
COPY BACKGROUND TO BUFFER
MOVE AND DRAW SPRITES ... will either have another buffer with attributes, and write ... INITIM2
; Fill Back buffer with a bright stripy pattern ... -
Aggravating problem with screensI've rewritten my Sam C runtime emulator code ( well almost ) to allow me to use my own routines for blitting sprites onto the screen, storing tiles …
... a foremost screen, and a back buffer, which flip when I tell ... -
Problem Wrapping SpritesHi, I am having an issue wrapping my sprites around the screen, Basically, I have a back buffer which is 24 chars (192 Pixels) by 28 chars (224 P…
... />
Basically, I have a back buffer which is 24 chars (192 ... -
Maze Mania - How did they do it?Hi, I was looking at the game "Maze Mania" by Hewson Consultants, written in 1989. The game can be downloaded from here [URL]http://www.worldofspec…
... . Drew the blocks to a back buffer
2. Drew the sprites ... positions
3. Copied the buffer to the main screen
buffer.png[/IMG]
I ... -
Jet Set Willy Turbo edition!Improve the speed of the game with just a few pokes! Do the standard CLEAR 32767 : LOAD "" CODE to get at the BASIC loader (see Your Spectrum issue …
... would be quicker if the back-buffer wasn't kept in contended ... -
SpritesYes yes, I know this has been hashed over plenty of times before, but... I have knocked up a quick tiling routine which works with my back buffer co…
... routine which works with my back buffer code, and would like to ... to do to get me back into coding Z80 before continuing ... -
Subtract 4 from an addressThis is a novice Z80 question really: I'm trying to vertical scroll my back buffer, but I'm not sure of the quickest way to apply an offset and mo…
... trying to vertical scroll my back buffer, but I'm not sure ... explained here:
My buffer is 22x26 chars however the ... therefore 18 chars wide. My buffer is arranged in a linear ... -
Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
... /> CALL INITIM2
; Fill Back buffer with a bright stripy pattern ... L,A ; GET HI BYTE BACK, SO H NOW IS 48H ... -
Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
... because you are copying the back buffer in linear order, which means ... 8, then line 16, then back to line 9, then line ... , etc. With the copy hopping back and forth like that it ... in a single frame. A back buffer to display copy should do ... -
Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
... /> CALL INITIM2
; Fill Back buffer with a bright stripy pattern ... L,A ; GET HI BYTE BACK, SO H NOW IS 48H ... -
Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
... /> CALL INITIM2
; Fill Back buffer with a bright stripy pattern ... L,A ; GET HI BYTE BACK, SO H NOW IS 48H ... -
Flicker on my scrolling demo, any ideas?I have created a scrolling demo downloadable from [url="http://www.peargames.co.uk/downloads/scroll.z80"]http://www.peargames.co.uk/downloads/scroll.…
... who is XORed to the back buffer, this will turn into a ... -
T.I.M. - A New Interlace - Demo for DOWNLOADHere's something that's been in the works for quite a while ( mostly in my head ) and recently I've aquired assistance to help it come to fruition. …
... /> [code]
start ld hl, buffer alligned on 256
exx ... , sp ;11 next line in back buffer
;FIRST ... ,l ;8 HL down in back buffer
; L=16+32< ... , sp ;11 next line in back buffer
... -
New Platform game in Development : Download availableHi, I have just been working on this for less than a week, so there is not a lot to show. It is based on a game called Jump Around which is currentl…
Thanks Rob. It uses a back buffer, however there is some flicker near the bottom, its just hard to see against that background.
How is your own game coming along?
Derek -
z88dk+splib2 sprites question.I'm creating a game and I have several "states" for my main sprite, such as jump, facing left, facing right, etcetera. All those states require a dif…
... have everything drawn in a back buffer and are copying or if ... -
Help, my Sprite Code wont workI have zipped it all up here: [url="http://www.peargames.co.uk/downloads/galagorf.zip"]http://www.peargames.co.uk/downloads/galagorf.zip[/url] If y…
... e / Dec e to move back and forward along a screen ... a 32 column line. Your back buffer is 24 bytes wide so ... -
Updated! Download My New Maze Game - WIP DemoTo download a demo of my new game (Bipboi), please click here... [url="http://www.peargames.co.uk/downloads/bipboi1.tap"]http://www.peargames.co.uk/…
128k Screen Flipping - Sample Code PleaseI know this has been covered before, but I cannot find out code to do the following: On a 128k Spectrum tell the speccy to display from address 4915…
... draw the block to the back buffer, then flip.
Using ...Codies help? Werewolves of LondonHi All, never one for shying away from the deep end, having only just dipped my toe in to the world of machine code I find myself trying to find out …
... a sprite in a
back buffer (an area of memory that ... (50547)
HL = address in back buffer where sprite is
DE ... 32-width, HL = HL+DE = buffer addr+32
which is ... .
[quote]
Buffer overflow maybe? The code doesn ...When do you optimise?I was just wondering when people here optimise their code. Do they wait till it is all done or do they code a routine and then optimise that?
... completely each frame? Will a back-buffer be required? Try and estimate ... usage for sprites, background gfx, back-buffer (if used).
Graphics ...Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…
... around that by using a back-buffer to draw the background and ... then moving the finished item back into the display memory.
Speccy 128k Double Buffering.If I understand this right, you display either of the screens, and draw to the one that is not being displayed. Am i right in thinking that the Non …
... system where I have a back buffer in the uncontended memory and ...Background image with SP1 and Z88DKWhat is the prefered way to place an entire (or very large) image in the background when using SP1? Should I convert it to a long (32*24=768 ) list o…
... compared to a full-size back buffer to store background. Another is ... the option of using a back buffer to supply background instead of ... tiles. Doing things with the back buffer will require more memory but ...Background image with SP1 and Z88DKWhat is the prefered way to place an entire (or very large) image in the background when using SP1? Should I convert it to a long (32*24=768 ) list o…
... to add the optional back buffer thing since it's ... "take graphics from the back buffer". The back buffer (screen$) will need to ... code 0 will use the back buffer screen$ for graphics. If ... compiled to indicate where the back buffer is.
Colour ...Alien8 style 3D Tiles - TheoryHello, Are there any articles etc explaining how to do 3d style tiles, i.e. when to redraw those in front etc. I would guess you would need to work…
... 8 has a "linear screen buffer" that is 6144 bytes long ... in fact a full size back buffer being used.
One ... the entire screen in a back buffer, individual character cells are completely ... drawn in an 8-byte buffer and the final version of ...
