How To Add an Icon to Menus

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Defines for the menu sections are located in simulation/SimulationData.h. The names and icons are in LoadMenus() in simulation/SimulationData.cpp. These are what you need to edit to create a new menu.

If you downloaded the source from Github, then you'll find a folder called font. If you look inside it, you'll see that there is packer.c, unpacker.c and editor.c. The instructions for Windows and Linux are different, so be sure to follow the correct instructions.

Windows

0) You will need GNU Make for the next step. You can download GNU Make from here: [1]

1) Get a copy of the source.

2) Copy font.h from /data in the source and and paste it into /font

3) Navigate into /font, and open a Command Prompt here. Compile the font editor tools using the following commands:

make unpacker.exe packer.exe editor.exe

Alternatively, just download a premade one here, with the added feature of showing the hex id as you edit.

4) In the same terminal run the following command to create a font.bin file the editor can read:

unpacker.exe

5) Run the editor from the terminal, and then use the "+" and "-" keys to go the end and find an empty character. Empty characters look like thermometers, although be careful not to confuse it with the actual thermometer. If it is just erase it via right clicking and left clicking in the drawing field. It will take a lot of pressing "+" to get to the end. Now draw your character. Look in the stdout.txt file in the same directory, and the last number in the file is the char id that corresponds to whatever icon you drew Remember the char id. If you used the precompiled one, you should have seen this number when editing instead.

6) Close down the editor and run:

packer.exe > font.h

Only use steps 7 and 8 if you downloaded the precompiled version (it's a bit out of date some icons will show different)

7) Rename stdout.txt to font.h

8) Open font.h, at the top of the file you should see something like this

#ifndef FONT_H_CHECK
#define FONT_H_CHECK
#define FONT_H 10
#ifdef INCLUDE_FONTDATA
char font_data[] = {

Replace

char font_data[] = {

With

unsigned char font_data[] = {

Go to the bottom of the file and you should see something like this

};
#endif
#endif

Change it to this

};
#else
extern unsigned char font_data[];
extern short font_ptrs[];
#endif
#endif

Or otherwise when you compile "The Powder Toy" you will get errors with the Graphics.cpp

9) Copy the font.h into /data, replacing the old one.

10) For your new menu, replace FF with the char id you remembered from step 5.

{"\xFF", "new menu ftw", 0, 1},

11) Recompile The Powder Toy and you should be ready to go.

Linux

1) Open a Terminal and cd to the /font directory that's included with the Git source code.

2) Enter the following commands to copy font.h from includes to font and compile the font editor tools:

cp ../includes/font.h .
make unpacker packer editor

3) In the same terminal run the following command to create a font.bin file the editor can read:

./unpacker > output1.txt

5) Run the editor from the terminal and then use the "+" and "-" keys to go the end and find an empty character. Empty characters look like thermometers, although be careful not to confuse it with the actual thermometer. If it is just erase it via right clicking and left clicking in the drawing field. It will take a lot of pressing "+" to get to the end. Now draw your character. and look in output1.txt, and the last number there is the char id and it corresponds to what icon you drew.

6) close down the editor and run:

rm ./font.h
./packer > font.h
cp -f ./font.h ../includes

8) for your new menu, replace FF with the last number from the output1.txt file in the font directory.

{"\xFF", "new menu ftw", 0, 1},

9) Recompile The Powder Toy and you should be ready to go.