Allow preventing players from joining games using permissions

build.gradle

@@ -103,6 +103,8 @@ dependencies {
   modApi include("eu.pb4:player-data-api:0.4.0+1.20.3")
   modApi include("eu.pb4:predicate-api:0.3.0+1.20.2")
 
+  modImplementation include("me.lucko:fabric-permissions-api:0.2-SNAPSHOT")
+
   modCompileOnly('xyz.nucleoid:disguiselib-fabric:1.3.2')
   modCompileOnly('maven.modrinth:afkdisplay:1.1.0')
   modCompileOnly('eu.pb4:polymer-autohost:0.7.4+1.20.4')

src/main/java/xyz/nucleoid/plasmid/game/GameTexts.java

@@ -151,6 +151,10 @@ public static MutableText inOtherGame() {
                     )
             );
         }
+
+        public static MutableText notAllowed() {
+            return Text.translatable("text.plasmid.join_result.not_allowed");
+        }
     }
 
     public static final class Kick {

src/main/java/xyz/nucleoid/plasmid/game/manager/ManagedGameSpace.java

@@ -1,6 +1,7 @@
 package xyz.nucleoid.plasmid.game.manager;
 
 import com.google.common.collect.Lists;
+import me.lucko.fabric.api.permissions.v0.Permissions;
 import net.minecraft.registry.RegistryKey;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.network.ServerPlayerEntity;
@@ -211,6 +212,8 @@ PlayerOfferResult offerPlayer(PlayerOffer offer) {
             return offer.reject(GameTexts.Join.gameClosed());
         } else if (this.manager.inGame(offer.player())) {
             return offer.reject(GameTexts.Join.inOtherGame());
+        } else if (!Permissions.check(offer.player(), "plasmid.join_game", true)) {
+            return offer.reject(GameTexts.Join.notAllowed());
         }
 
         return this.state.invoker(GamePlayerEvents.OFFER).onOfferPlayer(offer);

src/main/resources/data/plasmid/lang/en_us.json

@@ -66,6 +66,7 @@
   "text.plasmid.join_result.game_full": "Game is already full!",
   "text.plasmid.join_result.in_other_game": "You must %s before joining another game!",
   "text.plasmid.join_result.in_other_game.leave_this_game": "leave this game",
+  "text.plasmid.join_result.not_allowed": "You are not allowed to join this game!",
   "text.plasmid.map_workspace.workspace_not_found": "Map with id '%s' was not found!",
   "text.plasmid.map.bounds.get": "The bounds for the workspace are %s to %s",
   "text.plasmid.map.bounds.set": "Updated bounds for workspace",

src/main/resources/fabric.mod.json

@@ -22,6 +22,7 @@
     "fabric": "*",
     "minecraft": ">=1.20.2-",
     "polymer-core": "*",
+    "fabric-permissions-api-v0": "*",
     "java": ">=17"
   }
 }