Stub implementation of action filters

core/src/mindustry/core/NetServer.java

@@ -15,6 +15,7 @@ import mindustry.entities.*;
 import mindustry.entities.traits.BuilderTrait.*;
 import mindustry.entities.traits.*;
 import mindustry.entities.type.*;
+import mindustry.net.Administration;
 import mindustry.game.EventType.*;
 import mindustry.game.*;
 import mindustry.game.Teams.*;

core/src/mindustry/entities/type/Player.java

@@ -48,8 +48,7 @@ public class Player extends Unit implements BuilderMinerTrait, ShooterTrait{
     public float baseRotation;
     public float pointerX, pointerY;
     public String name = "noname";
-    public @Nullable
-    String uuid, usid;
+    public @Nullable String uuid, usid;
     public boolean isAdmin, isTransferring, isShooting, isBoosting, isMobile, isTyping, isBuilding = true;
     public boolean buildWasAutoPaused = false;
     public float boostHeat, shootHeat, destructTime;

core/src/mindustry/net/Administration.java

@@ -17,6 +17,7 @@ public class Administration{
     private Array<String> bannedIPs = new Array<>();
     private Array<String> whitelist = new Array<>();
     private Array<ChatFilter> chatFilters = new Array<>();
+    private Array<ActionFilter> actionFilters = new Array<>();
 
     public Administration(){
         load();
@@ -71,6 +72,21 @@ public class Administration{
         return current;
     }
 
+    /** Add a filter to actions, preventing things such as breaking or configuring blocks. */
+    public void addActionFilter(ActionFilter filter){
+        actionFilters.add(filter);
+    }
+
+    /** @return whether this action is allowed by the action filters. */
+    public boolean allowAction(Player player, PlayerAction action){
+        for(ActionFilter filter : actionFilters){
+            if(!filter.allow(player, action)){
+                return false;
+            }
+        }
+        return true;
+    }
+
     public int getPlayerLimit(){
         return Core.settings.getInt("playerlimit", 0);
     }
@@ -452,11 +468,18 @@ public class Administration{
         }
     }
 
+    /** Handles chat messages from players and changes their contents. */
     public interface ChatFilter{
         /** @return the filtered message; a null string signals that the message should not be sent. */
         @Nullable String filter(Player player, String message);
     }
 
+    /** Allows or disallows player actions. */
+    public interface ActionFilter{
+        /** @return whether this action should be permitted. if applicable, make sure to send this player a message specify why the action was prohibited. */
+        boolean allow(Player player, PlayerAction action);
+    }
+
     public static class TraceInfo{
         public String ip, uuid;
         public boolean modded, mobile;
@@ -469,4 +492,9 @@ public class Administration{
         }
     }
 
+    //TODO implement
+    public static class PlayerAction{
+
+    }
+
 }

core/src/mindustry/net/NetConnection.java

@@ -15,8 +15,7 @@ import static mindustry.Vars.netServer;
 public abstract class NetConnection{
     public final String address;
     public boolean mobile, modclient;
-    public @Nullable
-    Player player;
+    public @Nullable Player player;
 
     /** ID of last recieved client snapshot. */
     public int lastRecievedClientSnapshot = -1;