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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…
... /> [/quote]
It requires timing synced to the raster, so ... everything drawn in a back buffer and are copying or if ... -
unreleased spectrum protection system - any use any more? also pokerama sourceDon't know if anyone's interested in this. During my days hacking games for Your Sinclair and Crash (and Sinclair User for a while) I had a pet proje…
... ROM edges (including changing the timing constants) suggesting it's a ... like about 3000 baud (ie double speed). Also sounds like you ... -
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?
... each frame? Will a back-buffer be required? Try and estimate ... , back-buffer (if used).
Graphics routines which are timing critical ... -
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…
... in the 8-byte pixel buffer. By using an occluding sprite ... does not clear the pixel buffer before it is drawn, we ... another character in the pixel buffer. Arrange for two same-size ... the last column. Using the timing details in post #24, we ... -
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…
... to get around, due to timing & screen-freshing - you can ... that by using a back-buffer to draw the background and ... -
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 …
... ) when you want to use double buffering.
I'm ... where I have a back buffer in the uncontended memory and ... -
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 ... fact a full size back buffer being used.
One ... ]
The engine is really double-buffering taken to the limit ... entire screen in a back buffer, individual character cells are completely ... -
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…
... fact a full size back buffer being used.
... br /> The engine is really double-buffering taken to the limit ... entire screen in a back buffer, individual character cells are completely ... ]
The character buffer cell idea is excellent, and ... -
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…
... are drawn into the buffer simply dump that buffer onto the screen ... memory so make sure the buffer, graphics & graphic routines ... good for drawing into a buffer it has problems when transferring ... by some nasty video timing (I did the timing method on Match ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... major overhaul to maintain proper timing. I've looked at some ... you to alternate what screen buffer you were updating and just ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... major overhaul to maintain proper timing. I've looked at some ... you to alternate what screen buffer you were updating and just ... few that rely on video timing to change colours in the ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... /> This assumes best case 6502 timing (ie no carries for address ... copy (for copying a back buffer to the main display) and ... /clear (for zeroing the back buffer to either 0 or some ... possible to fill a back buffer with a static background (not ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... you could draw to one buffer and then just have the ... a little more. We used double buffering like that on the ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... you could draw to one buffer and then just have the ... a little more. We used double buffering like that on the ... -
The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... spectrum display
2. A double buffered video mode (as the ... by hardware with a small buffer and not the software driven ... by hardware with a small buffer. Polled or interrupt modes.
The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... spectrum display
2. A double buffered video mode (as the ... by hardware with a small buffer and not the software driven ... by hardware with a small buffer. Polled or interrupt modes.
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…
... already shown frame into a buffer?
We gotta find ... copy that area into screen buffer.
[/QUOTE]
The ... worked, this allowed to do double buffering using only Basic instructions ...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…
... take a frame of time. Double buffering works well when that ... was updating the (offscreen) screen buffer as it was "2 frames ... /> [ROM] [ON-SCREEN-BUFFER] [CODE] [OFF-SCREEN-BUFFER]
Obviously, your ...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 …
... hardcode two screens and say "double buffering only".[QUOTE]
buffer as it tries to keep ...Beautifully programmed gamesJust watching the bobby bearing tzx and admiring the beautiful programming involved. Which other games would you say had asthetic programming opposed…
... very inefficiently programmed esp. the double LDIR job. Thank god it ... am using the attribute control buffer similar to Manic Miner (only ...Question about digitized sound and videoI searched the forums and couldn't find the answer, so here it goes. Regarding digitized sound: I remember reading an article long ago about a vid…
... that. (It's all rather timing-critical and error checking was ... or a 256-byte sound buffer, and stopping periodically to dump ... something from that buffer to the AY) and there ...Possible great ideaHello there everybody, I have been toying with the idea of doing a project here with the help of the gurus on the forum. The idea is to start the de…
... /right/center justification and a double-width text printer that can ... screen or into a memory buffer (for scrolling).
[quote ...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…
... br /> [code]
// prints double width chars without any formatting ... for printed bitmap (screen or buffer)
// f = ... buffer. The latter will be done to simplify the scroller. The double ... width text bitmap will be written to the memory buffer ...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…
... row
- The message is double width text
- The message ... in mind uses memset() for buffer init, memop() for pixel scroll ... at a time into the buffer and probably memcpy() because I ...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…
... double printed message 1 pixel at a time in the buffer ... br /> // Blit the stuff from buffer to screen
////////////////////////////////////////
. ... continual scrolling message printed double-width but not running ...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…
... the double printed message 1 pixel at a time in the buffer ... the address of the scroll buffer in hl so a "ld ...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…
... continual scrolling message printed double-width but not running ... br /> ////////////// Blit the stuff from buffer to screen ////////////////
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...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…
... scroller installs a new double-width character-half and ... br /> ////////////// Blit the stuff from buffer to screen ////////////////
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...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…
... I didn't think of timing this thing the easy way ... latter for printing a new double width char, obviously) which is ...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…
... DIRECTLY TO SCREEN AND-OR BUFFER
static ... /> }
// prints double width chars without any formatting ... +i-33, 32); // copy buffer to screen
temp += 256 ... fat char at end of buffer
if (!(*(++m_ptr))) m_ptr ...
