Greetings!
We are going to go through the process of modifying the controls for The Guild II.
I have not seen a consistent method before on the internet and after spending some time searching and experimenting, I think I finally found a way!
After doing these steps I was able to change the camera controls to fit my keyboard layout (ZQSD instead of WASD).
Feel free to give it a try and let me know if you are successful on your side.
Here is the quick explanation.
- Close the game. This is important as the game will only register changes at the next startup.
- Go to your game folder.
- On Windows for Steam users, this is usually located here: C:\Program Files (x86)\Steam\steamapps\common\The Guild II Renaissance.
- On Linux for Proton/Wine users, this is usually located here: ~/.steam/steam/SteamApps/common/.
- Open the file named input.ini with any text editor. Notepad++ is recommended. This file is really confusing at first as the value are not easily readable, but don't worry we are going to go through them.
- Make the changes we will see below and save the file. These changes consist in switching integer (number) values in the file. Read more below to go in-depth about this.
- Launch the game as you usually do. Enjoy your new controls/keybinds!
And now, here is the in-depth explanation on how to choose the integer values.
The input.ini file is a configuration file, each control has 4 values as presented below. Let's take the example of the key to toggle the HUD on and off:
"TOGGLE_HUD"
2000
35
-1- First, you have the Identifier, which is a string. In our example, this is "TOGGLE_HUD". This helps knowing what control you are modifying, and the identifiers are, thankfully, straightforward.
- The second value is 2000 when it corresponds to a keyboard key and 2100 when it corresponds to a mouse binding. It seems like it is for the input device ID. This is not important for what we are trying to do, just like the last value which is a boolean of either -1 or 0.
- The part that interests us the most is the third entry, which is an integer between 1 and 221.
This third value corresponds to a keycode on your keyboard. This is simply the integer value representation of when a key is pressed.
The "KeyCode" used in this third value corresponds to a specific SDL (Simple DirectMedia Layer) table. SDL is a game and software development library that, among other things, serves as an input devices communication layer. It seems to have been used by The Guild II.
Here is the table I have been able to put together from my experiments. You can also download it as a txt file in the attachments of this post:
/// Keycodes from SDL compatible with input.ini
/// ID - KEYCODE
1 Esc
59 F1
60 F2
61 F3
62 F4
63 F5
64 F6
65 F7
66 F8
67 F9
68 F10
87 F11
88 F12
183 PrintScrn
70 Scroll Lock
197 Pause
41 `
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 0
12 -
13 =
14 Backspace
210 Insert
199 Home
201 Page Up
69 Num Lock
181 KP /
55 KP *
74 KP -
15 Tab
16 Q
17 W
18 E
19 R
20 T
21 Y
22 U
23 I
24 O
25 P
26 [
27 ]
28 Return
211 Delete
207 End
209 Page Down
71 KP 7
72 KP 8
73 KP 9
78 KP +
58 Caps Lock
30 A
31 S
32 D
33 F
34 G
35 H
36 J
37 K
38 L
39 ;
40 '
75 KP 4
76 KP 5
77 KP 6
42 Shift Left
86 International
44 Z
45 X
46 C
47 V
48 B
49 N
50 M
51 ,
52 .
53 /
54 Shift Right
43 \
200 Cursor Up
79 KP 1
80 KP 2
81 KP 3
156 KP Enter
29 Ctrl Left
219 Logo Left (-> Option)
56 Alt Left (-> Command)
57 Space
184 Alt Right (-> Command)
220 Logo Right (-> Option)
221 Menu (-> International)
157 Ctrl Right
203 Cursor Left
208 Cursor Down
205 Cursor Right
82 KP 0
83 KP .In this table, you have two values available per line:
- First value corresponds to the KeyCode you have to use in the input.ini file.
- Second value is a visual, readable string corresponding to the keycode.
This is important to note that these values are adapting to your keyboard layout: this means "A" will really be the "A" key from your keyboard, and not just a QWERTY layout. So make sure to pick the value according to your keyboard layout directly!
Some controls listed in input.ini are not actively used in game. For example, it seems that the "QUICKLOAD" control, although listed in the file, is not working in game regardless of the keycode entered.
I do hope that the table works for everyone and is not specific to me, so let me know if you come across any issue and I will try to work it out for everyone!
At some point I might as well work on a small external GUI tool to easily change the controls, but for now you have all the info you need to enjoy custom controls without the need of an external remapper!
Have a good day and take care. 
