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1 user currently in Rom Hacking:  hukka |
| Acmlm's Board - I2 Archive - Rom Hacking - looking for a (sine)table generator |
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d4s Panser Level: 29  Posts: 132/325 EXP: 142151 For next: 5734 Since: 03-23-04 Since last post: 13 days Last activity: 1 day |
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| im looking for a tool that can generate tables from some simple inputs. heres why: im currently reprogramming the intro of my breath of fire 2 hack using some official artwork ive redrawn in 16 colours, animestyle (was lots of work). heres a wip-shot without any fancy effects:  and in case you feel like asking: yes, this is a direct screenshot from zsnes, no mockup. im using every damn byte of ram the ppus have to offer and i think it shows. the scenes basically consist of a background layer and a foreground layer(thats the one the characters are on), both are 32x64 tiles wide. instead of scrolling the layers with statical velocity(wich sucks), i've implemented a loader that writes tableentries to the bg scroll regs every other frame, enabling smooth and sexy movement. now heres my problem: i dont have a tool thats able to generate such tables. ive tried hitmens sinuslab and pans rollercoaster but these are well, most suitable for generating sinetables, wich are not so useful for me. im looking for something that can generate two-dimensional movement tables basing on some vectors provided by the user. im sure something like that exists, but unsure where or what exactly im searching for. suggestions, anyone? =) (edited by d4s on 03-07-05 08:56 PM) |
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Lin2tagada Newcomer Level: 5 Posts: 3/7 EXP: 281 For next: 248 Since: 03-16-05 Since last post: 182 days Last activity: 182 days |
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| I'm not experienced with this, but I found this interesting page about rotozoomers ("a graphic effect that rotates and zooms into some picture.") http://www.ocf.berkeley.edu/~horie/qbrotate.html There's also a section about generating a sinetable, but this is nothing more than precalculating the sine of each integer degree angle, to speed up your code. |
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ev0 Goomba Level: 9  Posts: 13/27 EXP: 2513 For next: 649 Since: 12-16-04 Since last post: 10 days Last activity: 7 days |
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| Look at puoet.net search in the production for demo tool there is The Gang Sinus Creator a very nice tool there is also Hitmen Sine Gen or something like this there is somewhere on the net a sine creator by Pan of Anthrox but is really hard to find and i dont't remember where i've taken it |
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d4s Panser Level: 29 Posts: 159/325 EXP: 142151 For next: 5734 Since: 03-23-04 Since last post: 13 days Last activity: 1 day |
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| thanks for the suggestions, dudes. ive already resolved the problem. instead of using full sinetables that are written to the scroll registers directly, i use tables that contain relative speed changes now. this proved to be much more flexible, created smoother movement and the tables are much smaller now, because they only contain the actual speed changes. these are <32 bytes typically and can be easily created manually in a hexeditor. another comfortable way to generate these kind of tables is to use a graphics editing program, btw. make a 8bpp greyscale picture with a height of 1 pixel. draw some kind of horizontal gradient and save the file as 8bpp greyscale tiff file. open that file in a hexeditor, get rid of the tiff header and there you go.  (edited by d4s on 04-05-05 12:14 AM) |
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