Update Pokémon Dream World sprites

[LateusBetelgeuse]

The sprites of Pokémon Dream World in the repo are very outdated. You can find an updated database in Bulbapedia:
Pokémon Dream World
Pokémon Dream World Items

Sadly Bulbapedia does not have a Download All button, so the sprites must be downloaded one by one. For the record I do not recommend to only download the ones that you don't have, because they apparently resized all items (they are smaller and have a transparent margin), so if you mix them the layout will be quite inconsistent.

[HybridShivam]

This can be done with a simple python script , no need to download them all manually. Currently I am engaged with a lot of other tasks otherwise would have definitely helped. Also I created one repo where I used Python to Scrap Bulbapedia images for my PokeDex. The Repo here
The python modules used are :
requests for making http requests (also for batch downloading if you like ) and
BeautifulSoup for parsing the html and scraping the links.

[Naramsim]

@lateo96, we don't have Dream World's sprites in our repo.

[LateusBetelgeuse]

@HybridShivam thanks. I just used DownThemAll! to download all images, and I was just about to update this issue. However a lot of thanks for the python repo, I will give it a shot.

[LateusBetelgeuse]

@Naramsim totally disagree. Can you explain then what this folder is for?
https://github.com/PokeAPI/pokeapi/tree/master/data/v2/sprites/items/dream-world
That folder was added 4 years ago, so it needs to be updated. Most items/pokemon from G7 backward have a Dream World sprite, including alolan forms. While Nintendo shutdown Dream World the sprites are still being designed and added by the community, and there's a reason of why they are in the repo: they just look great. I assume that you stop using them because the sprites wasn't updated in quite a long time, but they are all updated and available in Bulbapedia's archives.

[LateusBetelgeuse]

I stated that you should download all files and not just the ones you don't have. I was wrong, the old files are still very big, so you must resize all old sprites and add a transparent margin to make them visually consistent with all the new sprites, which have a fixed size of 80x80 pixels.

For example, we have these old/new pair of sprites:

As you can see, while the two images have a similar size (80x80 vs 90x90), the Luxury Ball is bigger because it does not have a transparent margin. I solved this by making the following steps:

1. Scale down the bigger image. A 64% appears to be the perfect scale factor.
2. Add a transparent margin until reach a size of 80x80 pixels.

The first step can be accomplished with the following ImageMagick command:

$ convert ./Dream_Luxury_Ball_Sprite.png -resize 64% ./Dream_Luxury_Ball_Sprite_scaled.png

The second step with another ImageMagick command:

$ convert ./Dream_Luxury_Ball_Sprite_scaled.png -background none -gravity center -extent 80x80 ./Dream_Luxury_Ball_Sprite_scaled_extended.png

Note: As pointed out here the order of the parameters given to convert is significant.

[Naramsim]

Hmm, thanks for detailing everything out. You did a good analysis. Still, we don't serve Dream World sprites through the APIs. Those files are 4 years old and I doubt we ever used them. We can get rid of them, instead, we are working on adding new sprites to the API over here: PokeAPI/sprites#12

If you are willing, @lateo96, you can contribute over there helping @C-Garza.