I actually looked into this once, and what you've posted is similar to what I figured out.

Lunar Magic does not have a way to edit where these levels go, and doing so requires that your replacement levels be inserted in specific areas of the ROM. It is easy to do, and I'd be glad to help you with it.

I might be able to change the conditions for you too, if you'd like.

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キョン
Kyon

The other areas "share" those level addresses. There is no way to use Lunar Magic to directly edit those levels without repointing a few things.

Repointing the levels is pretty easy, but if you're doing a good hack you should just make new levels and insert them into your hack manually.

If you'd like to give it a go, let me know when you've done all of this:

- Back up your ROM. You'll want this if you make a mistake or something doesn't work.

- Once you're sure your hack has been backed up, make a copy.

- Design your Chocolate Island 2 replacement in the copy. It doesn't matter what level numbers you save to, but make sure the level exits point to CF, CE, or CD.



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キョン
Kyon

Oh. That's easy. Just edit the level pointer tables to point to the levels you want to look at. (Find them in the ROM map.)

The pointers for layer 1 and 2 are three bytes long. The pointers for sprites are two bytes long. Here are the addresses. These are all the first two bytes. For layer 1, the third byte is 06. For layer 2, the third byte is FF.

ChocIsld2Layer1: 24 EC .dw DATA_06EC24
7E EC .dw DATA_06EC7E
7E EC .dw DATA_06EC7E ; This offset is never used.
85 E9 .dw DATA_06E985
FB E9 .dw DATA_06E9FB
B0 EA .dw DATA_06EAB0
0B EB .dw DATA_06EB0B
72 EB .dw DATA_06EB72
BE EB .dw DATA_06EBBE

ChocIsld2Sprites: 99 D8 .dw DATA_07D899
A1 D8 .dw DATA_07D8A1
A1 D8 .dw DATA_07D8A1 ; This offset is never used.
E5 D7 .dw DATA_07D7E5
EA D7 .dw DATA_07D7EA
25 D8 .dw DATA_07D825
4B D8 .dw DATA_07D84B
6E D8 .dw DATA_07D86E
88 D8 .dw DATA_07D888

ChocIsld2Layer2: 59 DF .dw DATA_0CDF59
59 DF .dw DATA_0CDF59
59 DF .dw DATA_0CDF59 ; This offset is never used.
59 DF .dw DATA_0CDF59
59 DF .dw DATA_0CDF59
59 DF .dw DATA_0CDF59
59 DF .dw DATA_0CDF59
59 DF .dw DATA_0CDF59
59 DF .dw DATA_0CDF59

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キョン
Kyon

Do you know how to use a hex editor? If not, let me know and I'll create some IPS patches for you. If so, go to address 0x2E467 and look for this code:

24 EC 06 0B EB 06 85 E9 06
That's how Lunar Magic knows what level layout to show for level CD, CE, and CF. This is the "default" level data.

For the variations on those levels, replace it with one of these:

Variation A: 7E EC 06 72 EB 06 FB E9 06
Variation B: 7E EC 06 BE EB 06 B0 EA 06
If you open the ROM with those modifications, the enemies won't match the levels. To get the correct enemy data, go to address 0x2EF9A and look for this:

99 D8 4B D8 E5 D7
That's the enemy data for CD, CE, and CF. This is also the "default".

Replace that with the matching data here:

Variation A: A1 D8 6E D8 EA D7
Variation B: A1 D8 88 D8 25 D8
Open it in Lunar Magic (it will complain about a bad checksum, ignore that) and navigate to level CD, CE, or CF to see the changes. Level CD only has one variation, so I've made it the same for both A and B.

This is not the correct way to edit these levels.

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キョン
Kyon