Random Questions

[mzxrules]

Two things for now. Does anyone know how item restrictions are set for 

• Equipping equipment screen items for old/young link? (for allowing Child to equip a mirror shield)
• Equipping C-Items to buttons (Child Megaton hammer, Adult Boomerang sort of deal)
• Item restrictions for a particular scene

[Jason777]

https://sites.google.com/site/deathbasketslair/zelda/ocarina-of-time/hacking-information/adultchild-item-usability

 

As for item restrictions in scenes, I know there is a gameshark code which allows you to use items inside houses that you can study... I've been trying to find it for awhile now, though.

[mzxrules]

Thanks for the inventory screen stuff. What are the "Offsets for Item Highlight" for?

 

Also remembered another thing, anyone know how to customize alternate scene setup loading? Like...

I know this much: According to my memory watcher, setups 0 - 3 are typically expected to be for child link day, night, adult link day, night, then setups 4+ are for cutscene setups. The hangup though is that this isn't true for Kokiri Forest... setup 2 is used for the adult version before the Forest Temple is cleared, while setup 3 is the after. 

 

Also, how do you set it so that the Sun's Song works in a dungeon?

[Jason777]

Without the "Item Highlight" the icon in the inventory screen won't have any color as if it's still disabled. You can select it but the icon will still be greyed out.

 

As for the alternate scene loading, you know about the 0x18 scene command right? Also, I don't think that Kokiri Forest has a night time? So perhaps they're using the night scene since there isn't technically a night time in the forest.

 

Also, I haven't looked into it but I'm pretty sure Sun's Song only works in "Outside" maps. Modifying the current time and skybox settings might reveal some insight on that.

[mzxrules]

Without the "Item Highlight" the icon in the inventory screen won't have any color as if it's still disabled. You can select it but the icon will still be greyed out.

 

Huh... that's pretty silly.

 

As for the alternate scene loading, you know about the 0x18 scene command right? Also, I don't think that Kokiri Forest has a night time? So perhaps they're using the night scene since there isn't technically a night time in the forest.

 

Child Kokiri Forest does not have a nighttime version, but neither does Lot's of Pots. I played with this a little at the Lot's O Pots scene and what appears to happen is that if the game encounters a 00000000 record in the alternate headers list, it will try the previous index, and possibly if none of them work, it falls back on the main header. Was able to get this to work by setting the last header (Adult Night) to point back to the first scene header (Child Day, after the 0x18 command), causing the child music to play. So there must be something that manages the edge case stuff like Kokiri Forest.

 

Also, I haven't looked into it but I'm pretty sure Sun's Song only works in "Outside" maps. Modifying the current time and skybox settings might reveal some insight on that.

Not entirely true. The Sun's Song does not work in the Deku Tree scene, but it does so in the Boss Room scene.In any case, I found it... it's set by command 0x08, a map command of all things... must play around with this a bit.

[mzxrules]

Another couple questions: Do any moderators think that this thread should be moved to the Q & A section?

 

Second, a number core dungeon/puzzle related actors have different styles depending on the dungeon they're in, rather than setting a different actor variable (for example, sliding doors in Deku Tree are wooden where sliding doors in Shadow are metalic, and buttons in Jabu Jabu's belly). Is there a way to change what style of door is used? I want to be able to add a boss door/key doors to child dungeons.

[giadrosich]

How does one go about having child Link pick and use an adult item? I'd like to incorporate this in the mod, but there aren't tutorials on it. How do I incorporate the codes into the game?

 

I also would be interested in adding keys to child dungeons.

[Jason777]

Second, a number core dungeon/puzzle related actors have different styles depending on the dungeon they're in, rather than setting a different actor variable (for example, sliding doors in Deku Tree are wooden where sliding doors in Shadow are metalic, and buttons in Jabu Jabu's belly). Is there a way to change what style of door is used? I want to be able to add a boss door/key doors to child dungeons.

http://wiki.spinout182.com/w/Modification_and_Addition_of_Switches#Alternate_Door_Skins

^ That should explain a lot of things. If you have trouble then try contacting Arcaith

How do I incorporate the codes into the game?

Patching codes is a common question around here; unfortunately, there is no simple singular answer. The difficulty can range from extremely easy where you only have to change a few values in the ROM... to dealing with advanced concepts such as creating an assembly routine in order to DMA a block of data from the ROM to RAM. The amount of difficulty really depends on the GS code. I would have to write a lot to explain it, but if you're interested you should look at this: http://spinout182.com/?a=z&p=zhk

How does one go about having child Link pick and use an adult item? I'd like to incorporate this in the mod, but there aren't tutorials on it.

I'll start by saying this: it's easier to have Adult Link use all weapons than it is for Child Link to use all weapons. In fact, I'm not even entirely sure if it's possible with Young Link. Anyways, porting items from the different aged Link's is a matter of combining the knowledge gained from these bits of information:

[*]Young and Old counterpart display list pointers: http://wiki.spinout182.com/w/Code_notes#Link_stuff

[*]Enabling icon selection and highlighting of the items via the item menu: https://sites.google.com/site/deathbasketslair/zelda/ocarina-of-time/hacking-information/adultchild-item-usability

[*]Display list porting between ZOBJ... Flotonic's program: http://www.the-gcn.com/topic/1192-display-list-porter/ or a manual tutorial (doesn't teach you how to port textures): https://sites.google.com/site/flotonic65/modding/n64zeldatut/portingdlists

The hardest items to port to Adult Link are the slingshot and the Deku sticks (and possibly the masks). The hardest things to port for Child Link are the bow and hookshot. I don't think the hookshot is possible. I haven't tried porting deku sticks or the hookshot yet, but here's something that will help for the slingshot/bow if you take the information used there and apply it with a couple of changes where needed: http://www.the-gcn.com/topic/1600-young-link-using-the-bow/

[DeathBasket]

The hardest things to port for Child Link are the bow and hookshot. I don't think the hookshot is possible.

 

Actually, I found out that you can make the hookshot function for young Link by changing a single byte in the ROM. Sanguinetti will have the details on that if you need to know, I don't have them available at the moment. I never did find out how the reposition the bow string though, its vertices seem to be pretty much in fixed positions on one or more axes so I don't know much about that. At this point it's completely possible to have both Links use all items afaik but to have them available to both at the same time would probably take much more work.

[Three_Pendants]

I am very curious to know about this single byte that would need changed to have Child Link use the Hookshot.

[mzxrules]

As am I.

[Rinku]

Another couple questions: Do any moderators think that this thread should be moved to the Q & A section?

 

Second, a number core dungeon/puzzle related actors have different styles depending on the dungeon they're in, rather than setting a different actor variable (for example, sliding doors in Deku Tree are wooden where sliding doors in Shadow are metalic, and buttons in Jabu Jabu's belly). Is there a way to change what style of door is used? I want to be able to add a boss door/key doors to child dungeons.

For the alternate door skins, you should see the link provided by Jason777.

But for the buttons in Jabu Jabu's belly: They are another actor than the basic switch. The actor number of the basic switch is 012A, while the number of the Jabu Jabu switch is 00E6. Keep in mind that the Jabu Jabu switch is much more limited than the basic switch.

 

Thank you for reading!

[mzxrules]

Another thing.

 

I've been trying to build a list of cutscene pointer values for the purpose of discovering new wrong warping ideas, and one thing I've noticed is that some cutscenes like introduction cutscenes (cutscenes which play when entering a scene via a specific entrance the first time) are stored within scene files, but nothing within the scene file itself is pointed towards the cutscene. Does anyone know of a way to find all the cutscenes within a scene file?

[Jason777]

Cutscenes are part of alternate scene headers and are pointed to by the 0x17 header command.

[mzxrules]

Nowhere near all of them. For example, the Deku Tree has no alternate headers, yet I've found that the intro cutscene for the Deku Tree is located at an offset of 0xB650 (for the debug rom, -0x10 for 1.0) from the start of the Deku Tree Scene file. 

 

In any case I discovered where the intro cutscenes are defined. Gonna spend some time to investigate it.

[Jason777]

Ahhh, I thought you were talking about regular cutscenes. I did not take into mind that you were talking about the introductory cutscenes for dungeons. Now that I think about... the same thing may be applicable for boss actors.

[mzxrules]

How do you calculate the CRC?

[Jason777]

I really don't know as I've always just relied on a tool to do it for me I took a snippet of SoulofDiety's (KaminoTamashi) code...

printf("oknrecalculating crc...   ");   uint32_t crc[2], d, r, t1, t2, t3, t4, t5, t6 = 0xDF26F436;   t1 = t2 = t3 = t4 = t5 = t6;   rewind(fp);   fread(data, 1, 0x00101000, fp);   for (i = 0x00001000; i < 0x00101000; i += 4) {      d = (data[i] << 24) | (data[i + 1] << 16) | (data[i + 2] << 8) | data[i + 3];      if ((t6 + d) < t6) t4++;      t6 += d;      t3 ^= d;      r = (d << (d & 0x1F)) | (d >> (32 - (d & 0x1F)));      t5 += r;      if (t2 > d) t2 ^= r;      else t2 ^= t6 ^ d;      t1 += ((data[0x00000750 + (i & 0xFF)] << 24) | (data[0x00000751 + (i & 0xFF)] << 16) |            (data[0x00000752 + (i & 0xFF)] << 8) | data[0x00000753 + (i & 0xFF)]) ^ d;   }   crc[0] = t6 ^ t4 ^ t3;   crc[1] = t5 ^ t2 ^ t1;   crc[0] = (crc[0] >> 24) | ((crc[0] >> 8) & 0xFF00) | ((crc[0] << 8) & 0xFF0000) | ((crc[0] << 24) & 0xFF000000);   crc[1] = (crc[1] >> 24) | ((crc[1] >> 8) & 0xFF00) | ((crc[1] << 8) & 0xFF0000) | ((crc[1] << 24) & 0xFF000000);   fseek(fp, 0x10, SEEK_SET);   fwrite(crc, 1, 8, fp);   printf("okn");

Taken from: http://www.the-gcn.com/topic/2251-sods-software/?p=34693

[mzxrules]

How do textures for map files work?

[Airikita]

I would like to know where the display lists for Link's bow is called. I have the offsets, but I want the location in ram/rom that loads those offsets when Link equips the bow. The actual MIPS code that is used. I tried digging for it, but the origins are still a mystery. It could be a stack point somewhere that loads it, and that's a pain in the arse to find.

[petrie911]

Any easy way to make the sword or non-hookshot C items usable underwater?

[Three_Pendants]

I looked for this data as soon as you posted the question a while back, but my attempts came up blank. So I thought to approach it with my expanded knowledge and the answer is... predictable I'll say that much.

 

When you enter water the game looks at what four items you have equipped. Checks to see if they are either the Hookshot or the Longshot and blanks out everything else. To change what items are allowed you would change...

 

0x836A0 ROM: 0xAFA840 - 241F000A - Hookshot allowed to be used underwater. (Technically it passes through a check which tests the value against the current item)

0x836AC ROM: 0xAFA84C - 2401000B - Longshot allowed to be used underwater.

 

But this isn't all! While the icon will no longer be opaque, you won't be able to use the action associated with the item. Looks like they were thorough (a little needlessly so) for this particular part.

 

 

0x3D6198 ROM: 0xC04E98 - 24010010 - Hookshot Action allowed to be used underwater.

0x3D61AC ROM: 0xC04EAC - 24010011 - Longshot Action allowed to be used underwater.

 

 

While I wish I could find how to make all items usable underwater (though that would get a bit silly.) this should be good enough for now.

 

Refer to the list here...

 

Action Parameters Mapping

 

3F403C - 06 = Deku Stick

3F403D - 1B = Deku Nuts

3F403E - 12 = Bombs

3F403F - 08 = Bow

3F4040 - 09 = Fire Arrow

3F4041 - 1A = Din's Fire

3F4042 - 0F = Slingshot

3F4043 - 1C = Fairy Ocarina

3F4044 - 1D = OCarina of Time

3F4045 - 13 = Bombchu

3F4046 - 10 = Hookshot

3F4047 - 11 = Longshot

3F4048 - 0A = Ice Arrow

3F4049 - 18 = Farore's Wind

3F404A - 14 = Boomerang

3F404B - 42 = Lens of Truth

3F404C - 2E = Magic Beans 

3F404D - 07 = Megaton Hammer

3F404E - 0B = Light Arrow

3F404F - 19 = Nayru's Love

 

3F4050 - 1E = Swing Empty Bottle

3F4051 - 25 = Drink Red Potion

3F4052 - 27 = Drink Green Potion

3F4053 - 36 = Drink Blue Potion

3F4054 - 2A = Letting Fairy out of Bottle

3F4055 - 1F = Empty Bottle containing Fish

3F4056 - 28 = Drinks Empty Bottle? (Lon Lon Milk Maybe?)

3F4057 - 24 = Ruto's Letter in Bottle

3F4058 - 20 = Empties Bottle containing Blue Fire

3F4059 - 21 = Empties Bottle containing Bugs

3F405A - 23 = Shows bottle containing Big Poe

3F405B - 29 = Drinks Empty Bottle? (Lon Lon Milk Maybe?)

3F405C - 22 = Drinks Poe

 

3F405D - 2C = Shows Egg 

3F405E - 2D = Shows Cucco  

3F405F - 2B = Shows Zelda's Letter 

3F4060 - 3A = Put Keaton Mask On

3F4061 - 3B = Put Skull Mask On

3F4062 - 3C = Put Spooky Mask On

3F4063 - 3D = Put Bunny Hood On

3F4064 - 3E = Put Goron Mask On

3F4065 - 3F = Put Zora Mask on

3F4066 - 40 = Put Gerudo Mask On

3F4067 - 41 = Put Mask of Truth On

 

3F4068 - 03 = Swings Sword (Likely used for "Sold Out"

3F4069 - 2F = Shows Egg (Likely Adult version) - 03

3F406A - 30 = Shows Pocket Cucco  - 04

3F406B - 31 = Shows Cojiro - 05

3F406C - 32 = Shows Mushroom

3F406D - 33 = Shows Odd Potion

3F406E - 34 = Shows Poacher's Saw

3F406F - 35 = Shows Broken Goron's Sword

3F4070 - 36 = Shows Prescription

3F4071 - 37 = Shows Eyeball Frog

3F4072 - 38 = Shows Eyedrops

3F4073 - 39 = Shows Claim Check

 

3F4074 - 09 = Fire Arrow

3F4075 - 0A = Ice Arrow

3F4076 - 0B = Light Arrows

 

3F4077 - 04 = Swings Sword (Kokiri Sword) 

3F4078 - 03 = Swings Sword (Master Sword)

3F4079 - 05 = Pulls out Two-Handed Sword

 

[haddockd]

Nice work. I tried and failed to make a GS code for something like this loooong ago and as you said, I could get items to not be opaque but still couldn't use them under water.

[Three_Pendants]

I can understand those problems.

 

I had problems with this in RAM, if you didn't breakpoint of a write on the changed value it wouldn't count and even then if you didn't follow the command through while in a breakpoint for the action mapping it acted as if unchanged. Thankfully changing it in ROM changes it for everything.

[petrie911]

So, I can make at most 2 items usable underwater, but they can be any items?

 

edit: tried Master Sword. I can't get the B button to work, but if you overwrite a C item with the Master Sword, it works fine underwater.