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Wireframe GraphicsI'm trying to get my head round 3d / wireframe graphics and not really having much luck. I've had a good look on google, but mostly come up with wir…
I'm also interested in this, but I wanted to know how to do it in Basic, with variables and DRAW. X and Y is the easy part, but handling Z is another story. -
Wireframe GraphicsI'm trying to get my head round 3d / wireframe graphics and not really having much luck. I've had a good look on google, but mostly come up with wir…
... variables and DRAW. X and Y is the easy part, but handling Z is ... -
DRAW x,y,a Algorithm - how does the ROM do it?Hi all, Getting on with SpecOS, and one of the things I would love to do is to preserve the original ROM's behaviour when drawing Arcs. This is don…
... "X value ";X: PRINT "X = ";X;
40 INPUT "Y value ";Y: PRINT TAB 10;"Y = ";Y;
70 LET Z=ABS ((ABS X+ABS Y)/SIN (G/2))
Z)+0.5)/8)+4
500 REM 'DRAW A LINE' from lastposition to X,Y
510 LET ... -
Birthday PlotsHello all; When browsing the web, I stumbled across an oddity known as Birthday Plots. In effect somebody enters a numeric date and the computer prin…
... ; max coords along the X & Y axes so that the plotter ... may actually mean "DRAW a line to" or "DRAW dx,dy from ... ]
LOGZ is "LOG Z" as in base 10 log ... of z. It's computing the number ... -
Birthday PlotsHello all; When browsing the web, I stumbled across an oddity known as Birthday Plots. In effect somebody enters a numeric date and the computer prin…
... (NUMERIC) MMDDYY"
30 INPUT z: CLS
40 LET c ... =INT (LN z-7)*0.01
50 ... RANDOMIZE z/10
60 LET i ... )*ymod: PLOT x,y: DRAW px-x,py-y: LET px=x: LET py=y
270 ... -
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. …
... />
[LIST]
[*]X & Y input location
[*]Input length ... LET i4=o: LET i5=z: LET i$="Paddy": GO ... VAL "4": LET i5=z: LET i8=z: LET i$="": GO ... 570 REM
580 PRINT #z; PAPER o; INK VAL "7 ... ";"i"; PAPER z;" Program End"
600 ... -
line, plot and circle in whole 256x192 displayhi! are there some way to draw lines, or whatever, in the whole 256x192 display, than just the above 256x176 part? (this is the msx1 version i made o…
... /> JR Z,plo1
CP 68 ;"D" = draw
NEG ;distance X negative
dod1 LD ... A,C ;compare distance Y
CP B ... ;no swap if X>Y
LD ... -
Is Doctor Who the best that it's ever been?I'm surprised that there's been no Doctor Who thread recently, especially given the revelations we've seen recently. I've loved this last series (and…
... It also risks doing an X-Files/Lost thing, where you ... of the arc needs to draw them in to conclude ... on, what happened about X, Y and Z?" even when those stories ... did what was needed to draw in enough of a ... bit pants but necessary to draw in an audience that ... -
real value of some of these books as learning aids?Ok, I admit perhaps it was a late night and frustration. :???: I could have been hallucinating when i was doing the typein. But I think not.. [url]…
... setorigin
160 DIM X(30): DIM Y(30)
170 INPUT ...
200 LET X(I)=COS ALPHA: LET Y(I)=SIN ALPHA ... /> 250 LET XPT=X(I): LET YPT=Y(I): GO SUB moveto ...
260 LET XPT=X(J ... ): LET YPT=Y(J): GO SUB lineto ... -
Books that you just can't quit.Much as parts of the presentation,writing style infurates me, there is a book I just keep comming back to again and again. Its like the Yang to the …
... LET NXPEN = FN X(XPT)
9420 ... Y(YPT)
9430 PLOT XPEN,YPEN
9440 DRAW ... Y(0)
9640 RETURN
9650 DEF FN X(Z) = INT ((XORIG + Z ... )*XYSCALE + 0.5)
9660 DEF FN Y(Z ... ) = INT ((YORIG + Z)*XYSCALE + 0 ... -
Books that you just can't quit.Much as parts of the presentation,writing style infurates me, there is a book I just keep comming back to again and again. Its like the Yang to the …
... setorigin
160 DIM X(30): DIM Y(30)
169 REM ... regular N-gon in arrays X and Y.
170 INPUT "TYPE ...
200 LET X(I) = COS ALPHA: LET Y(I) = SIN ALPHA ... -
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…
... br />
Perhaps having x, y AND z-order for each sprite could ... max y of your sprite and goes from 0 - 192. Draw affected ... areas by drawing sprites with lower z-order first ... sprite with highest z-order. This is how you draw GUI elements ... -
Block RoutineHi Folks, I want to draw a block on the screen dependent on providing the X,Y,W,H values. I came up with the following: [CODE]100 LET l$=" …
... continued for a routine to draw a filled rectangle on ... [CODE]1 DEF FN a(x,y,h,v)=USR 63000
z=0
7001 FOR ... (b+i),a: LET z=z+a
7003 NEXT ...
7004 LET z=INT (((z/l)-INT (z/l))*l)
... be able to supply the x,y,h,v and attribute ... -
Snowfall effectHow do you go about creating a snowfall effect like the one in Yeti? Now don't laugh, I'm currently printing 32 UDG's of dots OVER the top of my gam…
... so we don't draw the snowflake, only ... br /> call cord_to_scadd ;z, ok we're in ... /> ;
snowtab ;x (0-256),y (0-192) of each ... ;arrive with IX addressing x,y, return with HL pointing ... ld a,(ix+0) ; x coordinate.
rrca ; only ... -
Akalabeth gamei found now that someone ported an ansi-basic game (coded in 1979?) to msx-basic - what about a zx-spectrum basic version of it? ;) https://plus.goo…
... X pixel coordinate to DRAW relative X pixel coord
DEF FN e(y,z ... )=(175-z)-(175-y ... ): HPLOT ... TO -> DRAW
Convert ... -
Akalabeth gamei found now that someone ported an ansi-basic game (coded in 1979?) to msx-basic - what about a zx-spectrum basic version of it? ;) https://plus.goo…
... $: IF A$="Z" THEN GO TO 380
170 READ X,Y
X=+ve, Y=+ve
240 REM F=1 - DRAW, X=+ve, Y=+ve ...
250 REM F=2 - DRAW, X=-ve
DRAW, Y=-ve
270 REM F=4 - DRAW, X=-ve, Y=-ve
Akalabeth gamei found now that someone ported an ansi-basic game (coded in 1979?) to msx-basic - what about a zx-spectrum basic version of it? ;) https://plus.goo…
... $: IF A$="Z" THEN GO TO 390
180 READ X,Y
X=+ve, Y=+ve
250 REM F=1 - DRAW, X=+ve, Y=+ve ...
260 REM F=2 - DRAW, X=-ve
DRAW, Y=-ve
280 REM F=4 - DRAW, X=-ve, Y=-ve
Why no PLOT, etc. on bottom two lines?I was pondering if there was any way to get PLOT, etc. to address the full screen from BASIC without having to write a few lines of assembler to bypa…
... values but DRAW uses relative values for x & y.
... x=y+USR p191: REM = PLOT191 (x,y)
24 BRIGHT (z-x)=(191-2*Y ... ;Full Screen PLOT & DRAW, Y=0 to +191
... PLOT: defw Plot191
DRAW: defw Draw191
im looking for a fill routine written in basici know this would be slow but i want to tinker with it to produce something else.
... x=SQR ((r*r)-(y*y))
320 PLOT cx-x,cy+y: DRAW x*2,0: DRAW ... OVER 1;-x ... *2,0
330 IF x0 THEN PLOT cx+z ... ,cy+y
370 NEXT z
380 NEXT y ... of the circle (2 x X) is zero.
...Artillery - projectile motion gameI started writing this around 25 years ago and abandoned it due to performance issues, and a lack of physics knowledge. Bandersnatch on Netflix fille…
... clash problems.
2. The draw time of the terrain. I ... then draw it all quickly using
PRINT AT y,x; TAB z
Artillery - projectile motion gameI started writing this around 25 years ago and abandoned it due to performance issues, and a lack of physics knowledge. Bandersnatch on Netflix fille…
... clash problems.
2. The draw time of the terrain. I ... then draw it all quickly using
PRINT AT y,x; TAB z
draw the terrain using lines, or ...Pseudocode for CIRCLE algorithm?Can anyone provide me with the pseudocode for the Spectrum's CIRCLE algorithm? My machine code knowledge isn't up to reading the ROM routine. I'm try…
... the Spectrum's curve DRAW command in SpecBAS which ... /> Procedure SP_DrawSpeccyCurve(X, Y, Angle: aFloat);
Var
Z, W, F ... />
Z := Abs((Abs(X)+Abs(Y))/Sin(Angle/2));
Z < 1) Then
SP_DrawLine(X, Y)
Else ...Matchpoint ball algorithmAnyone has any idea how Psions Matchpoint ball algorithm works? Are they calculating the balls' parabola (floating point for just the ball doesn't se…
... the gravity from the y component of the velocity.< ... Make a table of various z values you would divide by ... (range of z the ball can be drawn ... at), store 1/z and turn your division into ... 2) Cheat and draw it isometric where x, y on screen is just ...
