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Author Topic: Image transforming  (Read 7813 times)
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Lord Wolfram
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« on: June 19, 2017, 01:37:43 PM »

So the other day I was talking with my Programming teacher and an idea came in my mind.
"Let's load image in game from the game's code."
So the idea follows - We take the image's data and transform it into HEX code. Then we write an array of each hex value for the image, then we load the image from Array into the game and we have our sprite.
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« Reply #1 on: June 19, 2017, 02:11:22 PM »

Wait, so we load an image and then save the image to the game again?
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Lord Wolfram
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« Reply #2 on: June 19, 2017, 02:13:01 PM »

Wait, so we load an image and then save the image to the game again?
Idea is that we don't have to have the image, we just have the HEX data of the image in game's code
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« Reply #3 on: June 19, 2017, 02:16:48 PM »

It sounds like a cool idea, though I'm afraid I am still lost on the reason for doing this. Would you mind elaborating a bit?
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Lord Wolfram
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« Reply #4 on: June 19, 2017, 02:25:31 PM »

It sounds like a cool idea, though I'm afraid I am still lost on the reason for doing this. Would you mind elaborating a bit?
I just came up with such idea, well some engines do not compress images etc. and hackers can easier MOD the game. This way they don't, AND if they were to edit your code, they would have to recompile it, and you can add uncompleted code there, which at first does nothing but serves as the defense system of the game, and we can punish the players for hacking
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Fox
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« Reply #5 on: June 19, 2017, 02:43:19 PM »

@ 1st post:  Yep. I do believe that is the way you do it.

@ Last post: I see it more as a way for hiding information / decluttering the user experience rather than anti-hack, but okay. (Maybe anti-hack for the inexperienced, though...) Closest I can think of to anti-hacking is a server+client approach that requires an internet connection. Any sensitive data (e.g. Save data) could stay on the server. (That being the server isn't on the player's machine, but the client connects to it.) But of course... if one is going to build a server+client thing... then there's the possible issue of DDOS and such... so, eh. It's never that simple.

Anyway... the client should only send input data like mouse clicks and keyboard presses... and receive image data/audio data.... in best case circumstances... but that's probably a lot of data, though... (graphics/audio), so probably not recommended. But if it was done... I recommend a small resolution (e.g. 240x160=0x9600 pixels)that could possibly be zoomed in to full screen. (So less data is sent across the internet than otherwise.) As for music... I'd say just send the audio file over to the user... As people will probably document it anyway. And less internet traffic=better.)
@My idea:  I can see its potential for a 4-player game, maybe... but a large MMO, probably not. - In that case, image caching would be the way to go, most likely.
« Last Edit: June 19, 2017, 03:12:58 PM by Fox » Logged

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« Reply #6 on: June 19, 2017, 05:32:23 PM »

@ Last post: I see it more as a way for hiding information / decluttering the user experience rather than anti-hack, but okay. (Maybe anti-hack for the inexperienced, though...)

It's more of like a message, don't mess with this engine, I don't like what you're doing, I.E. Easter egg.
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« Reply #7 on: June 19, 2017, 05:43:43 PM »

Wait, so you want the potential for a hacking community dedicated to hacking the game to make it harder to hack the game? :o

Or do you mean in general, like as a security feature for other games or sites?
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« Reply #8 on: June 19, 2017, 06:50:12 PM »

A message? Might as well spell out to them.... that you are the copyright holder/etc.

But anyway... in the situation where a program is not open-sourced... data/images that are stored outside the program can still be checked against a checksum/signature type thing... if they need not be edited by a user. If editing was the main concern and not necessarily exposure/etc. But that's more me just speaking of an alternative. (That is definitely not foolproof. But then again, neither method is.)

Now I wonder if it is possible to encrypt a file using certain built-in techniques... and make it so one's own program can decrypt it... but only into RAM. (Without actually grabbing any encryption related code yourself.)
« Last Edit: June 19, 2017, 06:58:25 PM by Fox » Logged

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« Reply #9 on: June 20, 2017, 03:32:04 AM »

Okay pretty nice.
But what kind of format are you going to use? I guess that would be the first step in this problem.

Now that I think about it, you might only need to specify a width for the image and then simply just load RGB values, which makes an extremely easy format.
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Cbox
Today at 08:05:17 AM
Fox: Such a patch would mean you need to be careful with item drops, coins, exp, etc. Because those things would then no longer be an infinite supply.  Whether or not one uses it depends on what they want to do with it.
Today at 07:55:01 AM
Fox: (High enough being based on the area you are in.)
Today at 07:54:02 AM
Fox: I had a thought today. What if I look into making a simple patch just for lulz.  One that works the same way as using Avoid, but it lasts from start to finish, and can't be disabled.  Avoid only works if your levels are high enough, though... so thought is to keep that as is.
Today at 01:55:17 AM
ryancaesar12345: hi guys i have new update in Golden Sun 2 Lost Age Revise Mod.ips try this. :)
Today at 01:54:16 AM
ryancaesar12345: where's that link?
Today at 01:53:56 AM
ryancaesar12345: i have no account in discord.*
Yesterday at 08:44:52 PM
Salanewt: Although in the case of Wish, you could probably just use Breeze instead.
Yesterday at 08:44:36 PM
Salanewt: Yeah, it's a messaging program sort of like Skype. I find that it's much easy to walk people through some of the basics of assembly, since that's what you'll need for most animation hacks.
Yesterday at 09:39:10 AM
ryancaesar12345: discord? im not good in asm or assembly.
June 22, 2019, 09:37:26 AM
MaxiPower: gpnna update my thread on progress of my character art if anyones interested. :P
June 21, 2019, 07:51:44 PM
Salanewt: Hey there! Animation editing can be tricky, but I can share some notes with you if you pop in on our Discord. Are you good with assembly?
June 21, 2019, 02:59:40 PM
ryancaesar12345: and how to change a death curse turn in hex editor?
June 21, 2019, 02:50:00 PM
ryancaesar12345: and how to make animation but changing palette only like wish blue i want to change violet. for AOE healing and earth element.
June 21, 2019, 02:47:44 PM
ryancaesar12345: im done already thanks man i change the icon in that tutorial and all i need is animation most of elemental like healing like wish but wind element. how to import animation in TLA editor in *game crashes* index
June 21, 2019, 12:01:35 PM
Fox: Oh that. You are talking about Caledor's tutorial?
June 21, 2019, 11:49:55 AM
Fox: So in little endian... 08FA0000 (32-bit) is the same as 00 00 FA 08 (8-bits) (Since GBA is little endian) ;;; but if this were big-endian, it would have been 08 FA 00 00 (8-bits)     
June 21, 2019, 11:42:17 AM
Fox: "in the ROM file" = I mean when using any other hex editor to look in the file... ROM section in VBA is 08000000-09FFFFFF, but ROM files are different sizes, so GS1 stops a quarter the way (08800000 / 8MB), and GS2 stops half way. (09000000 / 16MB)
June 21, 2019, 11:39:55 AM
Fox: I am not sure I understand what you are trying to do? ... But all little endian is is just reverse byte. (of the bytes in a data type).... So like... 8-bit is the same regardless of big or little endian. 16-bit is like 0102=big endian 0201=little endian .... 32-bit is like 01020304=big endian ; 04030201=little endian.  (I use 01-04 numbers to represent how the bytes are ordered by address.) ; 00FA0000 in the ROM file is 08FA0000 in VBA's memory viewer/and that's how it works when the game reads
June 21, 2019, 05:20:47 AM
ryancaesar12345: i sa that in icon compressor 00FA0000 -> in 00FA0008 hmm?
June 21, 2019, 05:14:41 AM
ryancaesar12345: how to convert in hex editor a address in little endian like this? 00FA0080?

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