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Problem With POINT StatementHello everyone this is my first ever post, So firstly i'd like to say hello to everyone and secondly thank you to the admins for such a great site, …
Machine code optimisationI'm geting back into z80 coding and wonder what the best way of showing how efficient the code is. I've got Rodney Zaks book and see there are timin…
... don't need a cp X/Call z,YYY per room. But ... )
cp 0
call z,Room0C
cp 1
call z,Room1C
I did ...Lime Rick, like Snake but with gravity[B]Lime Rick[/B] by [url=http://www.kissmaj7.com/games/]Kissmaj7[/url] is an elaborated version of "I Left Myself Behind". It's a puzzle game with an…
... has a grid of 11 x 15 objects and the game ... other objects by co-ordinates (x/y in a single byte).Lime Rick, like Snake but with gravity[B]Lime Rick[/B] by [url=http://www.kissmaj7.com/games/]Kissmaj7[/url] is an elaborated version of "I Left Myself Behind". It's a puzzle game with an…
... other objects by co-ordinates (x/y in a single byte).[/QUOTE ...New game: The Speccies 2This is out too. :D [URL="http://tardis.dk/wordpress/?page_id=1060"][IMG]http://tardis.dk/retro/speccies2/images/Logo.png[/IMG][/URL] [URL="http://…
... for the Spectrums screen (in x,y dimensions) so I had to ...display file addressing; screen slicingWhile working on this Compendium I'm updating or rewriting a lot of stuff. One thing I eventually came to appreciate was the simple & clever way in w…
... br /> 80 LET x=-x1+xo: LET y=y1+yo
... br /> 100 LET x=-x1+xo: LET y=-y1+yo
... br /> 110 LET x=-y1+xo: LET y=-x1+yo
... br /> 120 LET x=x1+xo: LET y=-y1+yo
... br /> 130 LET x=y1+xo: LET y=-x1+yo
... RETURN
1100 REM Plot x,y
1105 REM ref ...display file addressing; screen slicingWhile working on this Compendium I'm updating or rewriting a lot of stuff. One thing I eventually came to appreciate was the simple & clever way in w…
... be simply replaced with PLOT x,y which reduces the run ... 4 LET b=INT ((175-y)/8)
5 LET c ... =INT ((255-x)/8)
6 LET hl ... br /> 10 LET x=x1+xo: LET y=y1+yo: GO ... br /> 14 LET x=y1+xo: LET y=x1+yo: GO ... /> LET x1=r: LET x=x1: LET y1=0: LET ...Help with calculating screen addresses[SIZE=3][FONT=Calibri]I?m having a bit of a coding session whilst at work so can?t spend too much time on my current problem. I?m sure someone on thi…
... br /> 335 // pxy = pixel (x,y) coordinate
336 //
... 339 // cyx = character (y,x) coordinate - ordering borrowed from Sinclair ... will return the character y coordinate corresponding to the ... corresponding to the given (x,y) pixel coordinate
346 ...Type-in BASIC contest on Reddit.Not sure how WOS-legal it is to mention/link to other forums, but Reddit is having a contest on r/retrobattlestations, asking readers to type a speci…
... x=INT((f(i)/3-y)*3+0.05)
680 LET x=x+x ... (i)+kf: LET y=y+y(i): LET p ... x=INT((f(i)/3-y)*3+0.05)
740 LET x=x+x ... (i)+kf: LET y=y+y(i): LET p ... THEN LET p$=x$: LET x=wx: LET y=1: GO ... sprite in p$ at X,Y
2010 L…Documentation of ZX Spectrum built-in functionsHi, Is there a documentation of the built-in ZX Spectrum 48+ functions (assembly)? I am thinking about something like the documentation included in …
... screen (8 pixels), at the (X,Y) coordinates, but that's still ...Documentation of ZX Spectrum built-in functionsHi, Is there a documentation of the built-in ZX Spectrum 48+ functions (assembly)? I am thinking about something like the documentation included in …
... screen (8 pixels), at the (X,Y) coordinates, but that's still ...Rendering clipped glyphSometimes you need to render a glyph of arbitrary size to the screen. And clip it. For example: drawing a mouse cursor means combining drawing of a…
... sp1_Rect *clip, uchar *frame, uint x, uint y);
s = sprite ... /> frame = animation frame offset
x,y = pixel coordinate
[/code]
x and y boundaries of the rectangle ...Maths problemHi guys! I'm having a bit of trouble with a small section of code in Basic. I am spinning a wheel around with numbers 0-9 on it (think of the code w…
... LET remainder = INT(maxnum * (X - INT X))
so for ... rounded down by mistake (so X - INT X + some_small_number).
...
remainder = INT(maxnum * (X - INT X) + 0.5) that will work ... though, C has x % y for remainder when x is divided by ...Small demo to show my sprite engine for ZX Spectrum 48KThis demo shows 13 sprites moving at 50fps totally flicker free: 12 enemies bouncing in edges and the main character, controllable with OPSA (note S …
... another stuff. The sprites NUM, X, Y are stored in a table ...array offset (z88dk)Im trying to simulate a 2 dimensional array by using an offset [code] #include <fzx.h> char scr[768]; int arrayoffset(char x,char y) { return (x*…
... /> char arrayoffset(char x,char y)
{
return ((x*24)+y);
}
void main()
{
char x,y;
fzx.font = ff_Swiss;
array offset (z88dk)Im trying to simulate a 2 dimensional array by using an offset [code] #include <fzx.h> char scr[768]; int arrayoffset(char x,char y) { return (x*…
... /> for (x=0; x!=32; ++x)
for (y=0; y!=24; ++y)
scr[y][x] = x;
for (x ...Code to test if a rectangle is in a rectangle[SIZE=3][FONT=Calibri]I am looking to write some code that will check if a rectangular shape is outside or overlapping a second rectangle. If the sma…
... 170 STEP 6:
PLOT x,y: DRAW 5,0: DRAW 0 ... 0,-5:
RANDOMIZE y*256+x: POKE 40000,PEEK 23670: POKE ... /> 22 OVER 1:
PLOT x,y: DRAW 5,0: DRAW 0 ... ,-5: PLOT x,y:
OVER 0:
NEXT y: NEXT x
Writing faster BASICIn terms of structuring BASIC programs, what are the best ways allocate variables, functions, arrays? Any tips. I remember INPUT mag had some suggest…
... ][code]LET x=x-( INKEY$ ="5")+( INKEY$ ="8")
LET y=y-( INKEY$ ="6 ... $
LET x=x-(a$="5")+(a$="8")
LET y=y-(a$="6 ... ").
The variables x & y have to be pre-declared ...Writing faster BASICIn terms of structuring BASIC programs, what are the best ways allocate variables, functions, arrays? Any tips. I remember INPUT mag had some suggest…
... $
LET x=x-(a$="5")+(a$="8")
LET y=y-(a$="6 ... ").
The variables x & y have to be pre-declared ...array offset (z88dk)Im trying to simulate a 2 dimensional array by using an offset [code] #include <fzx.h> char scr[768]; int arrayoffset(char x,char y) { return (x*…
... MIN(x++, y) is a nightmare! EDIT: Since if x < y then x is ... incremented twice! If x >= y it is ...array offset (z88dk)Im trying to simulate a 2 dimensional array by using an offset [code] #include <fzx.h> char scr[768]; int arrayoffset(char x,char y) { return (x*…
... calculation for static vars x,y or constants x,y. Inlining will cost more ...A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…
A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…
... list of data pointers and X/Y character co-ordinates.[/QUOTE]
Elliptical ChallengeSubsequent to the recent "Graph Plot" thread, I wrote this general purpose ellipse drawing routine which will plot (although it doesn't actually use …
... x(x,y,d)=FN a(x,y,FN r(d)):
DEF FN a(x,y ... ,r)=x*COS r-y ... *SIN r
4 DEF FN y(x,y ... ,d)=FN b(x,y,FN r(d)):
DEF FN b(x,y ... ,r)=x*SIN r+y ... =FN x(a( ...Pseudo-3D map renderingHave been mulling this over for a while, until that isometric thread prompted me to ask. I'm not sure if this is officially classed as 2D, 2.5D, or 3…
... T, N tiles long from x,y so each level didn't ...Elliptical ChallengeSubsequent to the recent "Graph Plot" thread, I wrote this general purpose ellipse drawing routine which will plot (although it doesn't actually use …
... x(x,y,d)=FN a(x,y,FN r(d)):
DEF FN a(x,y ... ,r)=(x-x0 ... )*COS r-(y-y0)*SIN r ... y(x,y,d)=FN b(x,y,FN r(d)):
DEF FN b(x,y ... ,r)=(x-x0)*SIN r+(y-y0)*COS r ...Elliptical ChallengeSubsequent to the recent "Graph Plot" thread, I wrote this general purpose ellipse drawing routine which will plot (although it doesn't actually use …
... ,2) for 22.5? angle, x/y axes 45/75
ld ... )
inc hl ;B,C=y,x
push hl
ld ...
call $22aa ;PIXEL_ADD ;get x,y screen address
ld b ...Elliptical ChallengeSubsequent to the recent "Graph Plot" thread, I wrote this general purpose ellipse drawing routine which will plot (although it doesn't actually use …
... would take 12.5kb if x,y were merged into one number ...
