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Palace wall patterns
Posted: August 11th, 2014, 1:03 am
by jeminacek
Hello,
I am sorry if this is trivial but I can't seem to figure it out. I have designed a completely new graphics for VPALACE.DAT and everything went fine except for one thing: I can't change the colour of marks on the wall. There are some 1-BPP images (black & white) in the "vpalace\walls\patterns\" folder and that's all there is. Any ideas?
Re: Palace wall patterns
Posted: August 11th, 2014, 12:00 pm
by David
- palace_wall_marks_color.png (3.76 KiB) Viewed 8747 times
You need to hex-edit prince.exe for this one.
Code: Select all
seg000:0293 B8 06 00 mov ax, colors_6_palace_wall
seg000:0296 50 push ax ; index
seg000:0297 B8 30 00 mov ax, 30h ; '0'
seg000:029A 50 push ax ; red
seg000:029B B8 26 00 mov ax, 26h ; '&'
seg000:029E 50 push ax ; green
seg000:029F B8 14 00 mov ax, 14h
seg000:02A2 50 push ax ; blue
seg000:02A3 2B C0 sub ax, ax ; RGB(30h,26h,14h) = #C09850 = light brown
seg000:02A5 50 push ax ; vsync
seg000:02A6 9A DF 92 79 0C call set_pal
Search for:
B8 06 00 50 B8 30 00 50 B8 26 00 50 B8 14 00 50
Change:
30, 26, 14 to the RGB values of the new color.
Note that most programs display RGB in the range 00h..FFh (0..255), but PoP uses 00h..3Fh (0..63), so you need to divide the values by 4.
Re: Palace wall patterns
Posted: August 11th, 2014, 5:24 pm
by jeminacek
Thank you!
I have just tried it and it worked!
Maybe another question: How did you know? Is there a documentation I should know about?
Re: Palace wall patterns
Posted: August 12th, 2014, 7:08 pm
by David
There is a disassembly of PoP1 here:
viewtopic.php?f=68&t=3423
It's a bit old, I have a newer version. I will upload that when I can.
The old version does not have the hex codes on the left side that I copied after "search for".
I know enough about the disassembly (*) so I could find the part where this color is stored.
(*) After all, I
converted the disassembly to C...
Re: Palace wall patterns
Posted: September 9th, 2017, 5:58 pm
by Norbert
If we hex edit to change palace wall marks, then what are the res* files in "vpalace/walls"?
[Edit: Never mind, I get it. Obviously, the shapes are in the images, the color in the EXE.]