Warps include any location that takes you from one place to another. This can include staircases, doors, cave entrances, cave exits, teleporters (like the kind in that blue-colored maze), or antenna trees.
This tutorial will show you how to edit these.
First, warp data is always right after the map data (this is a concept I mentioned a while ago) of the map that it's for. That means you can take the offsets of where the map data begins and add hex 40 to them all. And the warp data always ends right before the next map data. Basically, here are offsets for all the warps:
19C0DF-19C0E6 = ???
19C127-19C151 = ???
19C192-19C32F = Overworld Map - Upper left quadrant
19C370-19C50D = Overworld Map - Upper right quadrant
19C54E-19C6F2 = Overworld Map - Lower left quadrant
19C733-19C875 = Overworld Map - Lower right quadrant
19C8B6-19C8FC = Toronko Village Water Station
19C93D-19CBD6 = Marts & Houses
19CC17-19CC79 = Kurinon Village Cave - Floor 1
19CCBA-19CCF9 = Kurinon Village Cave - Floor 2
19CD3A-19CDD4 = Paparuna Lake Laboratory
19CE15-19D00D = Panses Village Cave
19D04E-19D078 = Toripa Antenna Tree Cave - Floor 1
19D0B9-19D0DC = Toripa Antenna Tree Cave - Floor 2
19D11D-19D140 = Toripa Antenna Tree Cave - Floor 3
19D181-19D1A4 = Toripa Antenna Tree Cave - Floor 4
19D1E5-19D1EC = Toripa Antenna Tree Cave - Floor 5
19D22D-19D250 = Peperi Mountain - Floor 1
19D291-19D2DE = Peperi Mountain - Floor 2
19D31F-19D350 = Peperi Mountain - Floor 3
19D391-19D3B4 = Peperi Mountain - Floor 4
19D3F5-19D403 = Peperi Mountain - Floor 5
19D444-19D46E = Kakotos Relic - Floor 1
19D4AF-19D550 = Kakotos Relic - Floor 2
19D591-19D68D = Kakotos Relic - Floor 3
19D6CE-19D7A0 = Kakotos Relic - Floor 4
19D7E1-19D969 = Kakotos Relic - Floor 5
19D9AA-19DA83 = Kakotos Relic - Floor 6
19DAC4-19DB65 = Kakotos Relic - Floor 7
19DBA6-19DC39 = Kakotos Relic - Floor 8
19DC7A-19DC8F = Burion Relic - Floor 1
19DCD0-19DD55 = Burion Relic - Floor 2
19DD96-19DED8 = Burion Relic - Floor 3
19DF19-19DFF2 = Burion Relic - Floor 4
19E033-19E0F0 = Burion Relic - Floor 5
19E131-19E22D = Burion Relic - Floor 6
19E26E-19E301 = Burion Relic - Floor 7
19E342-19E422 = Burion Relic - Floor 8
19E463-19E4E8 = Burion Relic - Floor 9
19E529-19E553 = Human World - Main Area
19E594-19E5A2 = Human World - Antenna Tree
19E5E3-19E5FF = Human World - Unused Buildings
19E640-19E64E = ???
19E68F-19E69D = ???
19E6DE-19E6EC = ???
19E72D-19E73B = ???
19E77C-19E7D0 = Ion Island Cave - Floor 1
19E811-19E86C = Ion Island Cave - Basement 1
19E8AD-19E8EC = Ion Island Cave - Basement 2
Yeah, that's a long list. You'll notice that they are all different lengths. This is because some maps have more warps than others (really long maps have tons of them, especially mazes like the blue maze with all the different symbol teleportation tiles). This also means that they're controlled by pointers -- the pointer table is from 19C000-19C09E. Be careful, this pointer table is for map data, not warp data. Keep that in mind. (Also keep in mind that the warp data is always right after the map data). Also, for some reason, each pointer is three bytes long -- I'm not sure what the first byte of the three is supposed to do, but the next two are just like any other Game Boy pointers.
But what do these bytes mean? Each byte has a different purpose, and follows a specific format. First, each warp is seven bytes long, and follows this format:
aa bb cc dd ee ff gg
Now for the bytes themselves:
aa = The acre that the warp is located in. The position of the acre has no effect on this, just the acre itself. That means if you move this acre to a different part of the map (remember, it's above the warp data), or use the same acre multiple times, it'll still be the same warp. If you do not know this value, there are two ways you can figure it out. The first way is to go to the acre in the game, use VisualBoyAdvance's memory editor, and take the value in address 0xC903 in the game's RAM. The second way is to look at the map data (again, above the warp data) and find it that way. The first way is easier, but the second way is faster if you know what you're doing.
bb = This value is where the warp is on the screen. Basically, this byte tells which 16x16 square on the screen to stand for the warp to take place. It uses this format:
http://img508.imageshack.us/img508/2/tfmapgridto0.png
cc = The location that the warp will take you to. This one is simple, just use this list to find where you want to go:
Code: Select all
00 - ???
01 - ???
02 - Overworld Map - Upper left quadrant
03 - Overworld Map - Upper right quadrant
04 - Overworld Map - Lower left quadrant
05 - Overworld Map - Lower right quadrant
06 - Antenna Tree - Upper left quadrant
07 - Antenna Tree - Upper right quadrant
08 - Antenna Tree - Lower left quadrant
09 - Antenna Tree - Lower right quadrant
0A - Toronko Village Water Station
0B - Mart/House
0C - Kurinon Village Cave - Floor 1
0D - Kurinon Village Cave - Floor 2
0E - Paparuna Lake Laboratory
0F - Panses Village Cave
10 - Toripa Antenna Tree Cave - Floor 1
11 - Toripa Antenna Tree Cave - Floor 2
12 - Toripa Antenna Tree Cave - Floor 3
13 - Toripa Antenna Tree Cave - Floor 4
14 - Toripa Antenna Tree Cave - Floor 5
15 - Peperi Mountain - Floor 1
16 - Peperi Mountain - Floor 2
17 - Peperi Mountain - Floor 3
18 - Peperi Mountain - Floor 4
19 - Peperi Mountain - Floor 5
1A - Kakotos Relic - Floor 1
1B - Kakotos Relic - Floor 2
1C - Kakotos Relic - Floor 3
1D - Kakotos Relic - Floor 4
1E - Kakotos Relic - Floor 5
1F - Kakotos Relic - Floor 6
20 - Kakotos Relic - Floor 7
21 - Kakotos Relic - Floor 8
22 - Burion Relic - Floor 1
23 - Burion Relic - Floor 2
24 - Burion Relic - Floor 3
25 - Burion Relic - Floor 4
26 - Burion Relic - Floor 5
27 - Burion Relic - Floor 6
28 - Burion Relic - Floor 7
29 - Burion Relic - Floor 8
2A - Burion Relic - Floor 9
2B - Human World - Main Area
2C - Human World - Antenna Tree
2D - Human World - Unused Buildings
2E - ???
2F - ???
30 - Room with Second D-Shoot
31 - Room with switch which activates Palm Sea Antenna Tree
32 - Ion Island Cave - Floor 1
33 - Ion Island Cave - Basement 1
34 - Ion Island Cave - Basement 2
dd = This determines the position (coordinate) on the map that you want to warp to. It follows this format regardless of the map (remember that in the case of the overworld map, it is actually four smaller maps joined together):
http://img214.imageshack.us/img214/9956/tfmapgridqt2.png
This can also be determined by memory address 0xC906 in the game's RAM.
ee = This is the position on the screen that you'll end up on when you warp. This works similar to the second byte, except the difference is this determines where you'll be taken. It uses the same format:
http://img508.imageshack.us/img508/2/tfmapgridto0.png
ff gg = This is the flag. Basically, it has to do with locking some doors. I haven't fully figured this one out. Normal entrances (such as ones in caves, or staircases) seem to almost always use FF FF. Going indoors (such as in marts, or houses of other people or Denjuu) almost always has the flag value 00 0C. Antenna trees are even more confusing; these flags are different with nearly every antenna tree. I guess this is because they all unlock with different events in the game. The weirdest thing is that doors that go to an antenna tree going one way have different flags from doors going the other way. For example, the offsets 19C5BE-19C5CB are gates to the antenna trees going from Toronko to Kurinon. You'll see that these flags are CB 01. However, the gates to the antenna tree going the other way (Kurinon to Toronko) (offsets 19C56A-19C577) have flags CC 01. Weird. Further complicating things is that if you set a flag for a gate to an antenna tree to FF FF, it's always locked, even though this flag is used for other warps that are always unlocked.
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Finally, a couple of notes:
- After the last warp in a given map, there is always a byte with value FF at the end. This tells that game that the map has no more warps.
- Only certain tiles are warpable. These include staircases, cave entrances, doorways, gates, antenna trees, teleportation tiles, and I think that's it. Further confusing things is that in some dungeons, the exit tiles look identical to regular tiles, which can be confusing. You cannot use an ordinary floor or wall tile to warp. It won't work. (Keep in mind I didn't make this game.) You can, however, edit contents of an acre so can make warpable tiles wherever you want, which I also mentioned how to do on Data Crystal, and I'll mention how to do THAT soon.
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Since you all are probably confused now, let's do a few examples.
First, let's start with one of the exits in Toronko Village Water Station. The first two warps happen to be the exit. Let's just look at one of them since they're almost the same.
This warp is from 19C8B6 to 19C8BC.
The bytes are like this:
4D 47 02 24 43 FF FF
Now let's look at them.
4D = This is the acre where the warp is located. If you look at the map data directly above, you'll see that this is the beginning of the cave, on the very bottom. It'll make a bit more sense if you look at this image:
47 = This is the position on the screen that you have to stand on to warp. As you can see, it's at the bottom of the screen:
02 = This simply tells the game that this warp will take you to the upper-left quadrant of the overworld map.
24 = The warp will take you to the fifth row, fifth column, as shown here:
43 = You'll end up around the center of the screen, right outside the cave:
FF FF = This is the flag used. Since it's a cave exit, it's FF FF.
I was going to do some more examples, but I hope that was enough to make at least a little understandable. But I will do some more later, I promise. This post took me almost two hours to make, so please appreciate it!
P.S. You'll notice that after the warp I just mentioned above, there is another warp right afterwards that is very similar -- the only difference is the second byte (the location of the warp). Since the exit is two tiles long, you need two warps!
