this code still doesn't work in DBPro!

Author

Message

Kale

21

Years of Service

User Offline

Joined: 8th Sep 2002

Location: United Kingdom

Posted: 24th Oct 2002 03:02

Link

this code still doesn't work in DBPro!!!

+ Code Snippet

hide mouse
sync on
sync rate 0

load image "test.bmp",1

TILE_SIZE     = 50
MATRIX_SIZE_X = 500
MATRIX_SIZE_Z = 500

make matrix 1,MATRIX_SIZE_X,MATRIX_SIZE_Z,TILE_SIZE,TILE_SIZE
position matrix 1,0,0,0
prepare matrix texture 1,1,TILE_SIZE,TILE_SIZE

tile=0
for z=TILE_SIZE-1 to 0 step -1
    for x=0 to TILE_SIZE-1
        set matrix tile 1,x,z,tile+1
        inc tile,1
    next x
next z
update matrix 1

do

 x#=wrapvalue(x#+mousemovey()/4)
 y#=wrapvalue(y#+mousemovex()/4)
 z#=wrapvalue(z#+mousemovez()/4)
 rotate camera x#,y#,z#

if upkey()=1 then move camera 2.0
if downkey()=1 then move camera -2.0

sync
loop

has something changed in the way 'set matrix tile' works or is 'prepare matrix texture' still bugged?

What the flame does not consume, consumes the flame.
----------------------------------------------------------------------
AMD XP2100+, Geforce4Ti 4400, 512Mb DDR, Abit KX7, WinXP Pro

Back to top

Profile PM Email

Richard Davey

Retired Moderator

21

Years of Service

User Offline

Joined: 30th Apr 2002

Location: On the Jupiter Probe

Posted: 24th Oct 2002 04:19

Link

Hi,

"Prepare matrix texture" is bugged, although it's a rather strange bug to say the least, this is what happens:

Imagine your BMP has 16 textures on it arranged 4x4. So we expect them to be numbered as follows:

1,2,3,4
5,6,7,8
9,10,11,12
13,14,15,16

What "prepare matrix texture" will do is scan across the BMP and you'll end up with this:

1,2,3,4
13,14,15,16
9,10,11,12
5,6,7,8

Weird I agree! But not impossible to code around. Basically it looks like there is a 1 row offset mucking it up, but all you need to know to get around it is:

1) The first row of tiles will be as expected (i.e. 1,2,3,4)
2) All the rest will come in reverse ascending order, starting from the bottom.

So to get to Tile 5 you jump to the last "row" of the tile set and start reading and then continue reading from left to right, decreasing the row each time.

Pain in the arse? Yes! Easy to work around? Yes. Hope this helps.

Cheers,

Rich

"Gentlemen, we are about to short-circuit the Universe!"
DB Team / Atari ST / DarkForge / Retro Gaming

Back to top

Profile PM Email Website

Kale

21

Years of Service

User Offline

Joined: 8th Sep 2002

Location: United Kingdom

Posted: 24th Oct 2002 15:39

Link

thanks rich, roll on patch 3

What the flame does not consume, consumes the flame.
----------------------------------------------------------------------
AMD XP2100+, Geforce4Ti 4400, 512Mb DDR, Abit KX7, WinXP Pro

Back to top

Profile PM Email

Sorry your browser is not supported!

DarkBASIC Professional Discussion / this code still doesn't work in DBPro!