Final Fantasy III: Fancy Walking

While walking up or down stairs diagonally, the player does not take poison damage, the Tintinabar does not restore HP to the user, the player would be able to walk through NPCs, and in a multi-party dungeon, save point use would be retained.

Title: Fancy Walking
Author: assassin17, Lenophis
Version: v1.0
Applies to: FF6us v1.0, v1.1, FF6j
Tested on: FF6us v1.0

Contents: Steps - header.ips
Steps - no header.ips
Anti Steps - header.ips
Anti Steps - no header.ips
steps.asm
readme.txt

ROM addresses:
C0/496A - C0/4977


Urgency: Lower than snails crawling

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Description:

While walking up or down stairs diagonally, the player does not take poison
damage, the Tintinabar does not restore HP to the user, the player would be able
to walk through NPCs, and in a multi-party dungeon, save point use would be
retained. To see an example of the save point, head to Kefka's Tower, and have
party 2 stand on the save point Atma leaves behind. Have party 3 enter the
metallic room with the Aegis Shield, and traverse the stairs. Alternatively,
the stairs next to Inferno will also work.

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What this patch does:

Fixes diagonal movement so you can no longer walk through NPCs*, poison damage
and Tintinabar restoration are accounted for, and save point use is accounted
for.

*: They will still walk through you.

Note: The anti patches will remove the patch.

Second note: The second JSR in the original code was removed, and the subsequent
code was shifted up. Three bytes are free as a result.

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Extra fluff that didn't make the cut:

I'm not really sure what Square was thinking with the diagonal movement logic,
but they clearly knew of their own code, since they only called parts of it.

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Version history:

v1.0 - September 21, 2012. Initial version.

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Credits:

assassin17 - For coming up with the snazzy name.


Final Fantasy III (USA).sfc - NOINTRO
CRC32: A27F1C7A
MD5: E986575B98300F721CE27C180264D890
SHA-1: 4F37E4274AC3B2EA1BEDB08AA149D8FC5BB676E7
SHA-256: 0F51B4FCA41B7FD509E4B8F9D543151F68EFA5E97B08493E4B2A0C06F5D8D5E2