ROTOZOOMSPRITE bug on WIZ

[Ian Price]

Try this code on pc and WIZ

Code (glbasic) Select Expand


SETSCREEN 320,240,0

CREATESCREEN 1,1,192,192

USESCREEN 1

DRAWRECT 0,0,192,192,RGB(255,255,255)

USESCREEN -1

LOCAL angle#

WHILE TRUE

DRAWRECT 100,30,192,192,RGB(255,0,0)

ROTOZOOMSPRITE 1,100,30,angle#,1.0

INC angle#

SHOWSCREEN

WEND


On pc it works fine - the white square rotates smoothly, with the centre being the same as the red square.

Try the same on WIZ and the white square has an unexpected orbit.

[EDIT] Went back to this one to ensure that it was the ROTOZOOMSPRITE that was causing the problem and not the CREATESCREEN/USESCREEN commands

Code (glbasic) Select Expand


SETSCREEN 320,240,0

DRAWRECT 0,0,192,192,RGB(255,255,255)

GRABSPRITE 1,0,0,192,192


LOCAL angle#

WHILE TRUE

DRAWRECT 100,30,192,192,RGB(255,0,0)

ROTOZOOMSPRITE 1,100,30,angle#,1.0

INC angle#

SHOWSCREEN

WEND


Again the pc version works as expected - this time though, the WIZ doesn't even show the white square.

Therefore, confirmed that there is a problem with ROTOZOOMSPRITE on WIZ.

Seems it's also true of ROTOSPRITE (I used it in a compltely different program though).

[Kitty Hello]

Bug 1: I used a power of 2 size for the bitmap. That was stupid.
Bug 2: is related to the transparent colour. Try PRINT before the GRABSPRITE and the text is partially there.
I'm into that.

[Ian Price]

Fixed in the next update?

[Kitty Hello]

Yes, I hope I can find it quickly.

[Ian Price]

Cheers Gernot