Wiki/wiki-rtd/docs/wiki_development/functions/add-splashes.md

# RetroDECK Boot Splash / Logo

<img src="../../../wiki_images/logos/rd-esde-logo.svg" width="300">

## Main splash location

The main retrodeck splash is located in:

`/RetroDECK/res/splash.svg`

This is used at all times unless it is being overridden by the Easter Egg function.

## Easter Egg function

The function is part of the `/RetroDECK/functions/functions.sh`

The Easter Egg function looks in the reference list and overrides the bootlogo with one of the .svg files from the referense list.

Decription of the function:

```
easter_eggs() {
  # This function will replace the RetroDECK startup splash screen with a different image if the day and time match a listing in easter_egg_checklist.cfg
  # The easter_egg_checklist.cfg file has the current format: $start_date^$end_date^$start_time^$end_time^$splash_file
  # Ex. The line "1001^1031^0000^2359^spooky.svg" would show the file "spooky.svg" during any time of day in the month of October
  # The easter_egg_checklist.cfg is read in order, so lines higher in the file will have higher priority in the event of an overlap
  # USAGE: easter_eggs
```

The `easter_eggs()` function is as a part of the `start_retrodeck()` bootup function.

## Easter Egg reference list

The reference list is located under:

`/RetroDECK/emu-configs/defaults/retrodeck/reference_lists/easter_egg_checklist.cfg`

The config is populated with references with dates and time on when the easter egg logo should show up in the following format with `^` as seperators.

Each new logo is added as a new line.

### Example

`MMDD^MMDD^HHMM^HHMM^<rd-logoname-splash.svg>`

The order is:

- Start Date: MMDD
- End Date: MMDD
- Start Time: HHMM
- End Time: HHMM
- The `rd-logoname-splash.svg` should match the exact filename under `/RetroDECK/res/extra_splashes/`



### Example rd-xmas-splash.svg

The `/RetroDECK//res/extra_splashes/rd-xmas-splash.svg` exists within the extra_splashes folder.

The xmas logo splash in the reference list

`1201^1231^0000^2359^rd-xmas-splash.svg`

It says that the logo: `rd-xmas-splash.svg`

Should be displayed between:

- The 1st December and 31 December
- Within the time of 0000 to 2359 aka 24 hours.

## How to add a new splash logo

1. Get a hold of the logo in .svg format and it should have a transparent background.
2. Rename the logo so it matches the rd-logoname-splash.svg name so if as an example you want to add Easter name it: rd-easter-splash.svg
3. Put the logo in `/RetroDECK/res/extra_splashes/`
4. Update the `reference_lists/easter_egg_checklist.cfg` above with a new line with the correct time and date format.
5. Change the date of your PC to when the logo is supposed to show up to make sure it is working.
6. Done