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JackAsser
Registered: Jun 2002
Posts: 1990 |
Right-most sideborder sprite bug
If you remove the sideborder and place any sprite at the very right most place in the border you will see about 8 pixels wide garbage on the line before the actual sprite (all 21 sprite lines are accounted for below this point). This is also some kind of sprite data and share the colors from the sprite that is about to be shown. VICE emulates it somewhat correct. This means that the sprite is actually 22 lines high?!
How and why does this occur and from where are the pixels fetched when the bug is outputed (or is it a bus-lock of some kind)? |
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Graham
Account closed
Registered: Dec 2002
Posts: 990 |
You can also use X-position, or just move the sprite 1 pixel up... Or cover the bug with another sprite... or... or... or... |
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Danzig
Registered: Jun 2002
Posts: 430 |
or pronounce a BUG as a FEATURE like some silly east-european visual-basic-coder did... |
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MRT
Account closed
Registered: Sep 2005
Posts: 149 |
You mean, like opening up the borders? ;-) |
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Danzig
Registered: Jun 2002
Posts: 430 |
no, i mean like creating recordset1, open NONE-EXISTING recordset2 and looping over recordset3... NOT WORKING :) ... and as i removed >>On Error Resume Next<< all these ERROR-Messages appeard and he claimed: its all FEATURES in the program.... but yeah, i ment bugs like opening the borders ;) |
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Krill
Registered: Apr 2002
Posts: 2854 |
Graham: true. I should do some nifty sideborder code again, seems too much chunkyness and drive shit have paid their toll on me. :D |
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Style
Registered: Jun 2004
Posts: 498 |
graham: moving the sprite 1 pixel up just moves the corrupt gfx 1 pixel up :D
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JackAsser
Registered: Jun 2002
Posts: 1990 |
@style: but usually the side border is closed there... that's probably what Graham referred too... Personally I used the change-color-fix in one part, and move-in-x in another part. Both equally effective to squach that bug to oblivion. |
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Oswald
Registered: Apr 2002
Posts: 5027 |
could we have a screenshot of the bug ? |
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Krill
Registered: Apr 2002
Posts: 2854 |
Oswald: Check 1 Year Totally Stoned by Booze Design, the greetings part (BD.4*), the bug also occurs when using VICE.
I think nobody mentioned it before, but not only is there garbage one line before the sprite is displayed, but also that very sprite is prematurely cut off in its last line at the x-position where that bug occurs. |
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Style
Registered: Jun 2004
Posts: 498 |
yes, thats true also.
For my sideborder DYSP I cheated and ignored that fact :D
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