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Print Page - Some palette tricks (Lava glow, Trippy Tower of Babil, Big Whale)
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Library of the Ancients => Final Fantasy IV Research & Development => Topic started by: avalanche on February 09, 2015, 03:25:38 PM
Title: Some palette tricks (Lava glow, Trippy Tower of Babil, Big Whale)
Post by: avalanche on February 09, 2015, 03:25:38 PM
Here are a few more palette tricks used by the game, in addition to those posted in the FF4kster thread a while back. (http://slickproductions.org/forum/index.php?topic=1713.msg22009#msg22009 (http://slickproductions.org/forum/index.php?topic=1713.msg22009#msg22009))
15:C4D3 - Lava pulsating glow. When in the underground, palette 1 (0-based) is overwritten every frame, pulled from one of 4 consecutive palettes stored at 14:FA16 (ROM A7C16). The pulse pattern which says which of the 4 to use at any moment is defined by an 8-byte entry at 15:C503 (ROM AC703).
15:C3C3 - Big Whale running lights in flight. When flying in the whale, just one color of the palette used by the whale is overwritten, pulled in sequence from an 8-color table at 15:C3E0 (ROM AC5E0).
15:C3F0 - Psychedelic trippy Tower of Babil colors. When event flag 66 is set (after Kain steals the crystal), and when in either the Overworld or Underground, the frame counter byte itself is used to make a funky color entry and written to the palette used by the Tower tiles. Oddly the tower tiles use a different palette index for the two different worlds, but the effect is the same. Black is used instead when the flag isn't set.
I can't imagine these would be very useful to anyone. But if anybody wanted to say, turn the Underground into something that wasn't so yellow and lava-ish, there ya go! Of course, these kinds of routines could certainly be modified or mimicked to add pulsing or other effects to different maps entirely.
Title: Re: Some palette tricks (Lava glow, Trippy Tower of Babil, Big Whale)
Post by: Grimoire LD on February 11, 2015, 05:17:51 PM
Rather neat to know regardless, especially for the case you mentioned of not having the second Overworld map being so lava-y. Though the Laval Pulsating glow is also used in Sylph's Cave isn't it? Though that's green. Or is that a different set up?
Title: Re: Some palette tricks (Lava glow, Trippy Tower of Babil, Big Whale)
Post by: avalanche on February 13, 2015, 01:30:07 PM
Rather neat to know regardless, especially for the case you mentioned of not having the second Overworld map being so lava-y. Though the Laval Pulsating glow is also used in Sylph's Cave isn't it? Though that's green. Or is that a different set up?
Similar effect, but not applied in the same routine. See the link in the first post for the sylph glow and others.
Title: Re: Some palette tricks (Lava glow, Trippy Tower of Babil, Big Whale)
Post by: Grimoire LD on February 13, 2015, 11:28:08 PM
...hah. I guess I shouldn't be surprised that FFIV would take the essentially same visual cue and make another routine for it. It seems rather par for the course at this point,