Tool: DNS - Day, Night and Seasons

[~Andrea]

Hi!
In these days i developed a variant of prime's DNS:

Spoiler:

.THUMB
.ALIGN 2

MOV R6, #1
AND R6, R7
CMP R6, #1
BEQ CHANGE

PUSH {R2}
MOV R2, R3
LSR R2, R2, #2
SWI 0xC
POP {R2}

CHANGE:
PUSH {R2-R7}
MOV R4, #0
LDR R2, .HOUR
LDRB R7, [R2, #1]
LDRB R6, [R2]

MOV R3, #60
MUL R7, R3
MOV R5, R3
MUL R3, R5
MUL R6, R3
ADD R6, R7

PUSH {R0-R6}
MOV R0, R6
MOV R1, #135
LSL R1, R1, #4
SWI 0x6
LDR R7, .FILTRI
LSL R0, R0, #1
ADD R7, R0
LDR R7, [R7]
POP {R0-R6}

LOOP:
LDRH R5, [R0, R4]
LSL R2, R5, #27
LSR R2, R2, #27
LSL R6, R7, #27
LSR R6, R6, #27

SUB R2, R6
BPL GREEN

MOV R2, #0

GREEN:
LSL R3, R5, #22
LSR R3, R3, #27
LSL R6, R7, #22
LSR R6, R6, #27

SUB R3, R6
BPL BLUE

MOV R3, #0

BLUE:
LSL R5, R5, #17
LSR R5, R5, #27
LSL R6, R6, #17
LSR R6, R6, #27

SUB R5, R6
BPL SHIFT

MOV R5, #0

SHIFT:
LSL R3, R3, #5
LSL R5, R5, #10
EOR R5, R2
EOR R5, R3
STRH R5, [R1, R4]
ADD R4, #2
CMP R4, #4
BNE LOOP

END:
POP {R2-R7}
ADD R0, #4
ADD R1, #4
SUB R3, #1
BPL CHANGE
LDR R6, .RETURN
BX R6

.ALIGN 2
.FILTRI: .word 0x08F00000
.RETURN: .word 0x08B000C4+1
.HOUR: .word 0x03005542

Each filter follows the same format of GBA palettes:
[0] - [5 bit blue] - [5 bit green] - [5 red bit]
The first bit is unused, while the remaining fields occupy 5 bits.
In each field, you must specify how much blue/green/red subtract from the palette.
For example, to get a blue-tinted filter, you have to subtract red and green:
[0] - [0] - [8] - [8] -> [0] - [01000] - [01000] - [01000] -> 0x2108
I used these filters:

Spoiler:

E8 00 C7 00 A6 00 86 00 65 00 44 00 24 00 03 00 02 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 20 04 40 08 60 0C 80 10 A0 14 C0 18 E0 1C 00 21 01 1D 02 19 03 15 04 11 05 0D 06 09 07 05 08 01

In this specific case, there are 40 filters.
This number is obtained from the following formula: ((hours * 3600) + (minutes * 60) / 2160) = [0-39]
To increase the number of filters, replace the red highlighted part of the code with:
LDR R1, = VAL, where instead of VAL will be entered the denominator of the previous division, in my case 2160.
For example, to use 144 filters, you must be raplce VAL with 600 -> (24 hours * 3600) / 600 = 144.
In the last part of the routine, where the various offsets are marked, one is highlighted in blue and corresponds to the table where the filters are placed.
You can change it the offset where filters will insert.
To insert it we must go to 0x98 bytes later than the offset of the original DNS routine, and then overwrite the bytes with 00 4E 30 47 XX XX XX 08, where XX will be raplced by the offset of the new routine in little endian + 1.
Here's a little video to show the end result:

 

[Skyro005]

Hi!
In these days i developed a variant of prime's DNS:

To insert it we must go to 0x98 bytes later than the offset of the original DNS routine, and then overwrite the bytes with 00 4E 30 47 XX XX XX 08, where XX will be raplced by the offset of the new routine in little endian + 1.
Here's a little video to show the end result:

Could you perhaps explain a little more what we have to do to make it work? I tried to implement this in pokemon Emerald, but it just crashes on entering an outside map ...

With "the original DNS routine" do you mean the routine for the RTC or the routine for the DNS filters?

 

[BluRose]

I tried doin seasons with the tool but it's not working.
So always remember to remember the trustworthy face of rhacking...
SQ...
He only did the functionality on changing palettes but I think for seasons it's more than enough...
;)

the seasons of this tool are in all practicality functional
honestly idk why they actually have them separate if they're based upon the month anyways
point being just because the tileset is not swapped doesn't mean the seasons are not there and the value is still there for the season

 

[dannyboy941]

I try this tool on Fire red German version where i can find it out if this even working? So far i see everything still at Day colors.

 

[Jcool]

Could we make the D/N system optionally not depend on the RTC? So if I wanted to change the palettes for everything just by changing the D/N status byte, it would not check the RTC? Or just disable the RTC completely and be able to manually control the statusbyte for what time it is?

I will PayPal $25 to whoever can figure this out,

 

[Sekkei]

Good Day everyone,
The RTC hack does not work on real hardware, or any emulator with no RTC emulation (or with a different emulation as the vba).
Is this correct?

How does the ingame time counter for the savegame work?
Does it count real seconds every new start, or does it simply count up?
Does emulators count in the right speed? And How fast a real Gameboy would count?

To make it short:
Would it be possible to set the time of day based on the counter? To ensure the DAN system is compatible with original hardware (does it work on 3ds injection?) and every emulators

 

[YoY-X]

How do i remove the clock scene in Emerald?

 

[endrift]

The RTC code injected by this tool won't work on hardware. A patch I made to DNS.exe to inject fixed code is attached (as both UPS and IPS). This also makes the RTC code work with recent builds of mGBA.

 

[BluRose]

The RTC code injected by this tool won't work on hardware. A patch I made to DNS.exe to inject fixed code is attached (as both UPS and IPS). This also makes the RTC code work with recent builds of mGBA.

so
what exactly did you do to fix?

 

[endrift]

so
what exactly did you do to fix?

I figured out the bug by looking at what Pokémon Adventure: Red's Chapter was doing wrong, then patched that game by hand. I looked for the original code that had been in the game inside of DNS.exe and replaced it with my fixed version, so now it injects the fixed version instead of the original.

 

[BluRose]

I figured out the bug by looking at what Pokémon Adventure: Red's Chapter was doing wrong, then patched that game by hand. I looked for the original code that had been in the game inside of DNS.exe and replaced it with my fixed version, so now it injects the fixed version instead of the original.

sorry for my lack of clarity ;-;
what exactly was fixed?

 

[endrift]

This allows the real-time clock to report the time properly in emulators other than VBA, as well as on real hardware. The code was buggy in such a way that it only worked due to bugs in VBA as well, so on emulators lacking VBA's bugs it wouldn't work.

 

[apolo475]

I have a weird problem with the app where im trying to put the RTC but it goes through an error when i try to insert it. It says, "Maybe an old DAN-System detected! You have to erase it before you can install my new Dan-System!" I press ok and another error comes up saying. "Unhandled exception has occured in your application. If you click continue, the app will ignore and attempt to continue. Arithmetic operation resulted in an overflow." I click continue and try to erase the old DAN and another error pops up. "(same error as before) Index was outside the bounds of the array." I have no idea what to do and im just trying to get the RTS to work, it only happens with FR/LG, R/S/E.

 

[Urz]

This allows the real-time clock to report the time properly in emulators other than VBA, as well as on real hardware. The code was buggy in such a way that it only worked due to bugs in VBA as well, so on emulators lacking VBA's bugs it wouldn't work.

I've just tried the patch. I think there is a bug in the code that causes the game to recognise the 12 hour clock. Anything from 12:01-23.59 gets converted to 00:01-11:59.

Is there anyway to fix this?

 

[claska18]

I have a weird problem with the app where im trying to put the RTC but it goes through an error when i try to insert it. It says, "Maybe an old DAN-System detected! You have to erase it before you can install my new Dan-System!" I press ok and another error comes up saying. "Unhandled exception has occured in your application. If you click continue, the app will ignore and attempt to continue. Arithmetic operation resulted in an overflow." I click continue and try to erase the old DAN and another error pops up. "(same error as before) Index was outside the bounds of the array." I have no idea what to do and im just trying to get the RTS to work, it only happens with FR/LG, R/S/E.

I have this same issue here. Very new to all this, could really use some help. Just want to add Day/Night evolutions to Eevee

 

[tkim]

The RTC code injected by this tool won't work on hardware. A patch I made to DNS.exe to inject fixed code is attached (as both UPS and IPS). This also makes the RTC code work with recent builds of mGBA.

Thanks so much for the fix, I was spending a long time trying to figure out why RTC didn't display the correct time on my EDGBA. If you ever read this, could you post your fixed routine?

 

[RedyXtreme]

Ummm.... I as wondering if this will let me evolve eevee into umbreon or espeon...

 

[opakedragon]

Does anyone have the source code for the RTC and DAN? Obviously I have the hex code that this tool produces but I want to understand how it works to implement something with it.

 

[Just A Remixer]

... is the first download outdated, or..? It works, but it's been 8 years, so I don't know!

 

[adrianbass360]

Question, what application are you using to input the settings for 'Emerald: Replace 0xA1BCE instead'?