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need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …
... ),A ;put preshifted mask into draw procedure (left side)
... precalculated screen address where to draw sprite
LD SP ... A ; divide by two and lines are drawn in pairs
RET
* Draw sprite in unshifted position. Called ... -
3d Code... simple Anyone know where I can get some examples of 3d routines written in basic... I`ve done some googling, and come up with some source for PowerBasic or…
... want code to help me draw scenes, which I can then ... draw over... 3D package I hear ... /> Regarding the speed on SAM, draw and plotare so much faster ... if it`s 5,000 lines of code... -
Can Anyone explain sprites in Jet Pac/Atic Atac etcJet Pac was 16k, and yet the sprites were impressively fast. I notice they had a slight flicker at times, but were notmally pretty flicker free. W…
... Practice) of how to do draw one line, erase one line ... the screen and how you draw the screen.
The ... out of sequence, i.e. lines 1, 8, 16, 24, 32 ... were on that line, then draw the bit of any sprite ... -
Sprites flickeringI am trying to write a Spectrum game in machine code. I am still a beginner in programming, however I did much progress recently, i believe. Now I am…
... 64 is the number of lines from the top of the ... = 40992 tstates in which to draw your sprites. Timing's vary ... -
Favourite thing about the SpectrumWhat was/ or is your favourite thing/s about the Spectrum? Is it the soundchip of your favoured/owned machine, be it 48K beeper, or 128 AY the shee…
... !)
I had to hand draw every character on a sheet ... and hand code hundreds of lines of
100 DATA BIN ... -
Favourite thing about the SpectrumWhat was/ or is your favourite thing/s about the Spectrum? Is it the soundchip of your favoured/owned machine, be it 48K beeper, or 128 AY the shee…
... ??!
I had to hand draw every character on a sheet ... and hand code hundreds of lines of
100 DATA BIN ... -
Pixel LimitIF Y3<192 THEN : LET x2=INT (128+X*A*SIN A): LET y2=INT (Y3): DRAW INK
... have this limitation? Also, does DRAW have to be anchored to ... of the Spectrum?
DRAW will continue from the last ... call will ensure that the lines are drawn starting from point ... -
Pixel LimitIF Y3<192 THEN : LET x2=INT (128+X*A*SIN A): LET y2=INT (Y3): DRAW INK
[quote]
On 2004-11-16 21:44, dalmudlee wrote:
I have never seen this graphics restriction before. Why does the Spectrum have this limitation?
1720 FOR A=0 TO INT ((50*3.14)-38) STEP 3.14/P
1730 LET Y3=96+Y*A*COS A
Just remembered - Spirograph Effect. - Please ExplainJust remembered that we used to mess about with the Draw command to get a spirograph effect in Sinclar Basic. Squares 10 plot 75,75 20 draw 80,48,…
... to mess about with the Draw command to get a ... of course, tell BASIC to draw a curve, and that third ... much of a curve to draw.
You'd ... it knows it has to draw a number of segments, but ... which are joined up with lines to form the spirograph effect ...Troubleshootin PeteAll this talk about a certain person has been a downer this week, so to lighten things up how about if we had some tales of YS? Preferably ones that…
... . Finally, however, we had to draw a line under it so ... had said something along the lines of 'the sad git in ...What was the first game/program you wrote?Mine: ZX81 - a centipede clone with just one piece to shoot at - I called it Monopede :D Spectrum - a Basic game co-designed with a friend. I prog…
... a dire BASIC program to draw the Indian flag (my dad ... etc. ;) ). Took me some 50 lines to do it. Later I ... the For loop and the draw commands and did a much ...uncredited likenessess or paradies of real people in gamesWhat games featured uncredited paradies or graphics of real people? I dont mean like rambo from rambo II or anything like that. I mean uncredited I'…
... of real people. Along similar lines, the talking heads in one ... box art, which seemed to draw from a mixture of 'The ...Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …
...
20 draw 80,48,400
Lines
10 plot 75,75
20 draw 80 ... plot 75,75
20 draw 80,24,600Updated! 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/…
... other 1/25 I then draw the backbuffer to the screen ... line at a time (192 lines of 20 chars)
Ever felt conned?Have you ever read a review for a speccy game and the reviewer gives it a glowing review and you trust him and go out and buy the game only to find i…
... it said were "easy to draw using this program". Having quite ... program that ran on command lines (draw 2,3...that kind of ...Best Speccy footy games?What are you guys favourite Speccy footy games in order of best to worst? Mine are: 1. Italia 1990 2. Match Day II 3. Kick Off 4. Manchester Utd…
... tilebased.. so the pitch lines were vector lines.. so circles and areas ... curves had to be sacrified, because draw ...Best Speccy footy games?What are you guys favourite Speccy footy games in order of best to worst? Mine are: 1. Italia 1990 2. Match Day II 3. Kick Off 4. Manchester Utd…
... tilebased.. so the pitch lines were vector lines.. so circles and areas ... curves had to be sacrified, because draw ... been slower then, all the lines were present on that pitch ...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…
... sprites move in straight lines
// at ... _sprdrawftbl ; table of sprite draw functions indexed by type
sp1_UpdateNow(); // draw screen now
for ...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…
... around the screen in straight lines at different speeds. If any ...
._sprdrawftbl ; table of sprite draw functions indexed by type
draw function. This table must end ...MAME on the Spectrum?Yes, I know it's currently AY's job to make ludicrous posts (a position he's filling in very well, until TKRAP returns), but just out of interest, if…
... , better graphics and sound). I draw up to 6 sprites, but ... was thinking more along the lines of disassembling the thing to ...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…
[QUOTE=48K]1/ Random number generator: I've started using a ld a,r command to grab a number from the memory refresh counter. Only problem is that if I do this in quick succession, the numbers are obviously not very random at all.
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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…
... front of what. When I draw a character cell to screen ... it's possible to only draw individual character cells that need ... 's customizable enough that custom draw code can be used (with ... grid with horizontal and vertical lines. I think a dedicated isometric ...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…
... even though it takes more lines of code to do the ... on the display but only draw completed graphics there rather than ...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…
... the speccy drawing all the lines needed in each frame as ... lots of ships ect to draw on screen. The C64 frame ...
