WebP lobby images (#25184)

* Allow webp in lobby background files

* Make lobby art webp images

Reduces folder from 10 MB to 2.5 MB without only slight quality loss.

* Update PutLobbyScreensHere.txt

Content.Server/GameTicking/GameTicker.LobbyBackground.cs

@@ -13,7 +13,7 @@ public sealed partial class GameTicker
     [ViewVariables]
     private List<ResPath>? _lobbyBackgrounds;
 
-    private static readonly string[] WhitelistedBackgroundExtensions = new string[] {"png", "jpg", "jpeg"};
+    private static readonly string[] WhitelistedBackgroundExtensions = new string[] {"png", "jpg", "jpeg", "webp"};
 
     private void InitializeLobbyBackground()
     {

Resources/Prototypes/lobbyscreens.yml

@@ -1,31 +1,31 @@
 - type: lobbyBackground
   id: Robotics
-  background: /Textures/LobbyScreens/robotics.png
+  background: /Textures/LobbyScreens/robotics.webp
 
 - type: lobbyBackground
   id: Supermatter
-  background: /Textures/LobbyScreens/supermatter.png
+  background: /Textures/LobbyScreens/supermatter.webp
 
 - type: lobbyBackground
   id: Warden
-  background: /Textures/LobbyScreens/warden.png
+  background: /Textures/LobbyScreens/warden.webp
 
 - type: lobbyBackground
   id: Pharmacy
-  background: /Textures/LobbyScreens/pharmacy.png
+  background: /Textures/LobbyScreens/pharmacy.webp
 
 - type: lobbyBackground
   id: SSXIV
-  background: /Textures/LobbyScreens/ssxiv.png
+  background: /Textures/LobbyScreens/ssxiv.webp
 
 - type: lobbyBackground
   id: Susstation
-  background: /Textures/LobbyScreens/susstation.png
+  background: /Textures/LobbyScreens/susstation.webp
 
 - type: lobbyBackground
   id: SkellyVsTheRev
-  background: /Textures/LobbyScreens/skellyvstherev.png
+  background: /Textures/LobbyScreens/skellyvstherev.webp
 
 - type: lobbyBackground
   id: Doomed
-  background: /Textures/LobbyScreens/doomed.png
+  background: /Textures/LobbyScreens/doomed.webp

Resources/Textures/LobbyScreens/PutLobbyScreensHere.txt

@@ -1,2 +1,3 @@
 Note:
-Only png and jpgs files are supported, and you need a prototype in Resources/Prototypes/lobbyscreens.yml
+PNG, JPEG and WebP is supported. Please prefer a lossy WebP compression since lobby art is big.
+You also need to put a prototype in Resources/Prototypes/lobbyscreens.yml

Resources/Textures/LobbyScreens/attributions.yml

@@ -1,29 +1,29 @@
-- files: ["supermatter.png", "robotics.png"]
+- files: ["supermatter.webp", "robotics.webp"]
   license: "CC-BY-NC-SA-3.0"
   copyright: "Veritius#2351 (257233913951289344) on discord / @Veritius on GitHub"
   source: "https://github.com/Veritius"
 
-- files: ["warden.png", "pharmacy.png"]
+- files: ["warden.webp", "pharmacy.webp"]
   license: "CC-BY-NC-SA-3.0"
   copyright: "Solbusaur#4343 (220208697429852160) on discord"
   source: "https://github.com/space-wizards/space-station-14"
 
-- files: ["ssxiv.png"]
+- files: ["ssxiv.webp"]
   license: "CC-BY-NC-SA-3.0"
   copyright: "Abyssal#4842 on discord / @aby_doodles on Twitter"
   source: "https://twitter.com/aby_doodles"
 
-- files: ["susstation.png"]
+- files: ["susstation.webp"]
   license: "CC-BY-NC-SA-3.0"
   copyright: "Alekshhh github"
   source: "https://github.com/space-wizards/space-station-14"
 
-- files: ["skellyvstherev.png"]
+- files: ["skellyvstherev.webp"]
   license: "CC-BY-SA-4.0"
   copyright: "Hannah 'FairlySadPanda' Dawson 2024"
   source: "https://github.com/FairlySadPanda"
 
-- files: ["doomed.png"]
+- files: ["doomed.webp"]
   license: "CC-BY-NC-SA-3.0"
   copyright: "brainfood1183 github"
   source: "https://github.com/space-wizards/space-station-14"