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-   -   Pokepal17's tut no.1 - Resizing Overworlds (https://www.pokecommunity.com/showthread.php?t=173028)

Pokepal17 March 28th, 2009 7:43 AM

Pokepal17's tut no.1 - Resizing Overworlds
 
In this tutorial, I will teach you how to resize an overworld sprite.

Requirements:
:pokeball:Overworld Editor RE
:pokeball:A Hex Editor (I’m Hex Workshop)
:pokeball:A ROM (I’m using Fire Red BPRE)
:pokeball:An Emulator (I’m using VBA)

Okay now first of all load up your ROM and find the overworld that you want to resize. In my case I will be resizing the fallen old man from Viridian City.
First enable Expert Mode by pressing Crtl + M. Now look at the data. The info 1 sprite header is the main data of the overworld and the info 2 sprite header is the data of the particular overworld frame.

http://img407.imageshack.us/img407/6455/ow1.png


Let’s look at this in a hex editor. My way of finding the hex data is by searching for the reversed sprite pointer.
So I would do this:
083A0A70 ---> 700A3A08
And when we search it we get a result. Now we find the beginning of the data by going back until we come to FFFF.

http://img403.imageshack.us/img403/4350/ow2.png

Now I will explain what each bit of data is:

FFFF – Starter bytes
04 – Palette Index
11 FF 11 – Unknown data 1
0002 – The data size (the number of bytes the sprite takes, reversed)
20 – Width (hex)
00 – Unknown byte 1
20 – Height (hex)
00 - Unknown byte 1
14 01 0000 - Unknown data 2
18 37 3A 08 – Unknown pointer 1 (reversed)
F0 37 3A 08 – Unknown pointer 2 (reversed)
68 33 3A 08 – Unknown pointer 3 (reversed)
70 0A 3A 08 – Sprite Pointer (reversed)
FC 1C 23 08 – Unknown pointer 4 (reversed)

And there is the layout

You will need to find a sprite which has equivalent dimensions to the new dimensions of the overworld you’re resizing. Now I will be resizing my sprite to 64 x 64. So what I need to do is find another 64x64 sprite (the speedboat) in overwold editor.


http://img403.imageshack.us/img403/5536/ow3.png

Now first of all edit the data size to equal the one of the sprite you just looked up in overworld editor. So I will need to change it to 00 08 because that’s the data size reversed.

Next change the dimensions to what you want them to be, I’m having 64 x 64 so I’ll change the length and width bytes to 40 (coz that’s 64 in hex).


http://img403.imageshack.us/img403/6761/ow4.png

Now for the important bit, change the unknown pointers 1 and 2 to the ones of the sprite you looked up in overworld editor. This will determine how the sprite appears in game. If you don’t change them, then the overworld won’t look right in-game.

So what I’ll do is:
18 37 3A 08 --> 20 37 3A 08
F0 37 3A 08 --> D0 37 3A 08

So for me I change

http://img403.imageshack.us/img403/6798/ow5.png


to


http://img403.imageshack.us/img403/3811/ow6.png

Save and look at the resized sprite in overworld editor. You’ll see that the frames have joined, so they need repointing.


http://img403.imageshack.us/img403/5606/ow7.png

Now follow the sprite pointer and you will come to the pointers of the frames (sprite pointer info 2). Find out how may frames your sprite has and repoint the first (number of frames) pointers to a clean offsets. For the offsets, just find some FF in your hex editor and reverse the offset and replace the first pointer with it. Now to tell how much space you’ll need for each frame, convert the unreversed new data size into decimal.

So I get 0800 ---> 2048

So I’ll need 2048 bytes for each frame. So I repoint the frames to new offsets with enough space. I’m going to repoint to the offset 71A23C for my first frame so I reverse it and get 3C A2 71 08

After each frame pointer there is the old data size for the frame; replace it with the new one (in my case 00 80.)

Since all my frames are going to have the same images I’m repointing the frames to one offset but you’ll need to repoint to more offsets if you have a different image on each frame.

http://img403.imageshack.us/img403/2712/ow8.png


Now save and go back to the resized overworld in overworld editor. If all went well, the frame will be the last colour in the palette.


http://img403.imageshack.us/img403/7612/ow9.png

Now make your new overworlds.

http://img403.imageshack.us/img403/658/ow10.png


Test it ingame and it should be fine.


http://img300.imageshack.us/img300/2416/1636pokemonfireredversi.png

Credits to HackMew for the overworld editor readme file, Darthatron for his advanced overworld spriting tutorial and to Peyi for his tutorial on WAH.

Copyright 2009 Pokepal17

Matteron (96) March 29th, 2009 8:04 AM

U no there i programs to do this right?

Pokepal17 March 29th, 2009 9:16 AM

Quote:

Originally Posted by Matteron (Post 4478893)
U no there i programs to do this right?

Yep and programs can screw up ROMs. Besides this way shows people how to do it for themselves and not depend on a program.

The only program that I know that can do this can also screw up a ROM. And this is more practical :P

machomuu March 29th, 2009 9:20 AM

Quote:

Originally Posted by Pokepal17 (Post 4479207)
Yep and programs can screw up ROMs. Besides this way shows people how to do it for themselves and not depend on a program.

The only program that I know that can do this can also screw up a ROM. And this is more practical :P

By "only program" do you mean the overworld changer?

Pokepal17 March 29th, 2009 9:26 AM

Quote:

Originally Posted by machomuu (Post 4479227)
By "only program" do you mean the overworld changer?

Yeah, I think that's it. I heard it messes up ROMs

machomuu March 29th, 2009 12:14 PM

Quote:

Originally Posted by Pokepal17 (Post 4479249)
Yeah, I think that's it. I heard it messes up ROMs

So...you've never tried it?

Pokepal17 March 29th, 2009 1:03 PM

Quote:

Originally Posted by machomuu (Post 4480068)
So...you've never tried it?

I once tried it and it worked okay, so if you want to use it then fine, but if you want some more understanding of overworld sprites and you would like to know how to do it manually then that's what this guide is for :P

Besides, I like to do as much practical hacking as possible :)

machomuu March 29th, 2009 1:27 PM

Quote:

Originally Posted by Pokepal17 (Post 4480316)
I once tried it and it worked okay, so if you want to use it then fine, but if you want some more understanding of overworld sprites and you would like to know how to do it manually then that's what this guide is for :P

Besides, I like to do as much practical hacking as possible :)

Now that's the sign of a good worker!

destinedjagold April 8th, 2009 6:00 AM

Have mercy to those who have a slow internet connection... T_T
make the screenshots smaller and easier to be uploaded...

Pokepal17 April 8th, 2009 6:40 AM

Quote:

Originally Posted by destinedjagold (Post 4515232)
Have mercy to those who have a slow internet connection... T_T
make the screenshots smaller and easier to be uploaded...

Okay :P The screenshots will be made smaller and hopefully that should fix your problem :P It's annoying having slow internet. ¬_¬

mat1554 August 7th, 2009 7:35 AM

Hi,
I have a question for you, do you give me autorization to translate your tutorial in french for my forum please ? I you want, can you answer me by MP please.

Thank you !
Mat1554

SharpPoint August 7th, 2009 9:27 AM

Quote:

Originally Posted by mat1554 (Post 4956229)
Hi,
I have a question for you, do you give me autorization to translate your tutorial in french for my forum please ? I you want, can you answer me by MP please.

Thank you !
Mat1554

Well, I like that he actually asks for permission first. Most people would just go translate it without permission. This is the internet nowadays.

mat1554 August 8th, 2009 3:01 PM

xD I my head if you translate tuto without permission, it's thief the project and work that people who had make.
(sorry my english is not very good xD)

Pokepal17 August 8th, 2009 3:52 PM

Quote:

Originally Posted by mat1554 (Post 4961103)
xD I my head if you translate tuto without permission, it's thief the project and work that people who had make.
(sorry my english is not very good xD)

Well said, Also, while translating it, please credit the people I credited in the tutorial.

mat1554 August 8th, 2009 6:06 PM

Yeah, when I translate in title tuto

Quote:

Tuto name
Author
Credit Author
Tranlate By : me xD
Thanks you so much for you're permission

Sarcastic Prince August 9th, 2009 5:37 AM

Quote:

Originally Posted by Pokepal17 (Post 4479207)
Yep and programs can screw up ROMs. Besides this way shows people how to do it for themselves and not depend on a program.


Actually, that Program doesn't screw up the Rom. I've used that Program bunches of times in a "so called unstable rom", a Emerald Rom. Well, I do depend things on programs, most of the Time unless I have to insert OW's from a sheet in a Emerald Rom.

Pokepal17 August 10th, 2009 6:39 AM

Quote:

Originally Posted by Ruka Prince (Post 4963024)
Actually, that Program doesn't screw up the Rom. I've used that Program bunches of times in a "so called unstable rom", a Emerald Rom. Well, I do depend things on programs, most of the Time unless I have to insert OW's from a sheet in a Emerald Rom.

I see. Well using programs is fine IMO, but this is a method using mainly a hex editor.

Satoshi Ookami August 12th, 2009 2:15 AM

This is cool tutorial but I have a huge problem...
After I repoint the frames and the black 64x64 square in OWE appear I import some bitmap (I used Giratina and Rayquaza) but in game it's just blank space... but for some reason in A-Map the OW appear...

Pokepal17 August 12th, 2009 10:12 AM

Quote:

Originally Posted by Ash493 (Post 4974654)
This is cool tutorial but I have a huge problem...
After I repoint the frames and the black 64x64 square in OWE appear I import some bitmap (I used Giratina and Rayquaza) but in game it's just blank space... but for some reason in A-Map the OW appear...

Check, the sprites pointers and compare it to the ones I used. Sometimes, the wrong pointers makes it appear wrong in game.

Satoshi Ookami August 12th, 2009 11:20 PM

Quote:

Originally Posted by Pokepal17 (Post 4976051)
Check, the sprites pointers and compare it to the ones I used. Sometimes, the wrong pointers makes it appear wrong in game.

I wasn't resizing the Old Man
I was doing the biker...
And the problem is also that I can't do it with Overworld Changer...

Pokepal17 August 13th, 2009 2:38 PM

Quote:

Originally Posted by Ash493 (Post 4978542)
I wasn't resizing the Old Man
I was doing the biker...
And the problem is also that I can't do it with Overworld Changer...

Well the pointers for unknown 1 and 2 were for 64x64 OW sprites. So if you were resizing the biker to 64x64 you should have made the same alterations as I did in the tutorial.

Satoshi Ookami August 13th, 2009 11:20 PM

Quote:

Originally Posted by Pokepal17 (Post 4981364)
Well the pointers for unknown 1 and 2 were for 64x64 OW sprites. So if you were resizing the biker to 64x64 you should have made the same alterations as I did in the tutorial.

Yeah I think I wrote those correctly...
I'll try it again and if not can I send ya the ROM so ya can check it?

Robert Conley August 18th, 2009 12:51 PM

I tried following this to change the may ow in FR and when i search in the hex editor it says it cant find the pointer.

The sprite pointer is 083A0470 and I search for 70043A08 which seems to match what you did but it still doesnt find it. But when I copy/paste what you did it finds the old man.

TehBazzard August 28th, 2009 5:05 PM

Quote:

Originally Posted by Robert Conley (Post 5004246)
I tried following this to change the may ow in FR and when i search in the hex editor it says it cant find the pointer.

The sprite pointer is 083A0470 and I search for 70043A08 which seems to match what you did but it still doesnt find it. But when I copy/paste what you did it finds the old man.

I am having the same problem too.
I am changing Deoxys's Defense Form OW sprite, which the pointer is 08930328. I looked for 28039308 and nothing came up.
EDIT:Never mind I fixed it. I used the wrong pointer, its in Info1:Sprite Header.
EDIT2:Ok how did you find the offset of 71A23C? I would like to know so I can do it myself. I have no idea how you got to that offset so I can't continue.

Pokepal17 August 28th, 2009 6:00 PM

Quote:

Originally Posted by TehBazzard (Post 5047740)
I am having the same problem too.
I am changing Deoxys's Defense Form OW sprite, which the pointer is 08930328. I looked for 28039308 and nothing came up.
EDIT:Never mind I fixed it. I used the wrong pointer, its in Info1:Sprite Header.
EDIT2:Ok how did you find the offset of 71A23C? I would like to know so I can do it myself. I have no idea how you got to that offset so I can't continue.

Use FSF and search for the data size converted into decimal. Or do the same with a hex editor.


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