[FE7] The Official AI Documentation Thread

Documentation
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Taking a look at the AI Commands for AI2 0x8:

AI2 0x08 - 08B975B8 - ???
01 00 FF 00 00 00 00 00 D9 A4 03 08 00 00 00 00 @Seen in unreached commands in AI 0x17?
00 00 FF 01 00 00 00 00 72 A9 03 02 00 00 00 00 @If 0<Memory, Goto 1
03 00 FF 00 00 00 00 00 00 00 00 00 00 00 00 00 @Goto 0
1B 00 FF 01 00 00 00 00 00 00 00 00 00 00 00 00 @Label 1
01 00 FF 00 00 00 00 00 F1 A3 03 08 44 3B 1D 08 @ Parameters = FF 01 00 00
01 00 FF 00 00 00 00 00 C1 A0 03 08 48 3B 1D 08 @Get Foe in Expanded Range
00 00 FF 01 00 00 00 00 72 A9 03 02 00 00 00 00 @If foe in expanded range, goto 1
0E 00 FF 00 00 00 00 00 00 00 00 00 00 00 00 00 @Nop
03 00 FF 00 00 00 00 00 00 00 00 00 00 00 00 00 @Goto 0
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Had a hunch based on the 0x32 there, confirmed experimentally.

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Is there a way to make the enemy target more units?
I know AI1 0x0A makes the enemy attack the character 0x03, but can you make them attack other units?
Like, 0x0A = Target 0x03, 0x1A = Target 0x04, 0x1B = Target 0x05 and so on.

I don’t know is this is doable, but is there something to force the enemy to attack certain units?
–But I suppose this haven’t been figured out yet, because I remember someone wanted to create the Provoke skill based on AI and he couldn’t.–

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The actual code for AI 0xA is
AI 0xA - 08B97ABC - Only attack character 0x03 (tutorial Lyn) (B97AC0)
04 64 FF 00 03 00 00 00 00 00 00 00 00 00 00 00 @??? Data = 03 = Lyn_t
00 05 FF 00 03 00 00 00 72 A9 03 02 00 00 00 00 @If memory != 0x3, goto top
05 64 FF 00 00 00 00 00 00 00 00 00 00 00 00 00 @Default behaviour if can’t find Lyn_t?
03 00 FF 00 00 00 00 00 00 00 00 00 00 00 00 00 @Goto top

So to expand it just add more 04-type commands. AI Assembly. Blah. Stuff. Sorry I’d explain more but I have to leave so this is a rushed post.

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A post was split to a new topic: AI Help Needed

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ok I think it’s better to just ask because my own tests are giving me something weird. For making the custom AI, is the order [A1,A2,A3,A4] or is it actually [A3,A4,A1,A2] like the first post was suggesting?

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I think they are read in the latter order but actually written in the first

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If you’re asking about when assembling events, the traditional [AI1, AI2, AI3, AI3] order still works, but I’m now recommending the format which I defined for the newest event assembler of [AI1, AI2] AI3 AI4.

If you’re talking about making your own AI, then it doesn’t matter; you specify whether it’s AI1 or AI2 by overwriting different pointer tables.

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Ah thank you both, using the old event assembler so it will be a1 - a4 then.

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Reposting from the FE8 AI thread:

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This routine is super important for AI execution.
Routine 08034E50
Writes command data to 0203A97C

Parameters:
r0 = move to x
r1 = move to y
r2 = command
r3 = target unit deployment number (escape x)
sp+0x00 = inventory slot to use or steal (0xFF = ballista)(escape y)
sp+0x04 = snag/wall x-coordinate (escape direction)
sp+0x08 = snag/wall y-coordinate

Commands:
00 = none. 01 = attack. 02 = escape (remove unit from map). 03 = steal.
04 = pillage village. 05 = staff. 06 = item. 07 = dance/play. 08 = talk.
Note: dance/play doesn’t work.

0203A97C
0x00 = command
0x01 = enemy deployment number
0x02 = move to x
0x03 = move to y
0x04 = (skipped)
0x05 = (skipped)
0x06 = target unit deployment number (escape x)
0x07 = inventory slot to use or steal (0xFF = ballista)(escape y)
0x08 = snag/wall x-coordinate (escape direction)
0x09 = snag/wall y-coordinate
0x0A = 01 (indicates a command was written)

Not 100% sure on talk command bytes 0x06-0x09 yet.
Looks like the deployment numbers of the talkers and maybe the talk event id.

5 Likes
169

Oh my god this is amazing I’m going to put this to good use.

Edit: Can you find a corresponding routine in FE8?

Edit2: I don’t have time this week, but I want to mess with this asap. So, next week. Not being able to/not putting enough effort into find this routine was a sticking point with me not meddling too much with AI anymore.

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[Album] FE7 AI Shenanigans, 2016 Ver

It’s so lit tho

1 Like
171

What am I looking for in these images?

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Enemies using items that they normally don’t, like promotion and stats boost items.
I’m not sure about the Batta vs. Batta.

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Promoting enemies would be the biggest troll

2 Likes
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Yeti had a video where he attacks an enemy in fexp and the enemy autolevels to 20/20 and promotes. It was pretty funny.

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Enemies using stat boost items is suuuuuuch a tease.

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Aha I found it. https://www.youtube.com/watch?v=GruSYlciNLs

1 Like
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It would be a good challenge on maps, putting stat boost items on chests and a thief stealing and using them.
Even better with promotion items.
I wonder if is possible to give items to brigand/thief after destroying villages and then they’re able to use them…