Added invulnerability & invisibility

started with movement and chatting as well. both don't work atm

src/main/java/org/samo_lego/simpleauth/SimpleAuth.java

@@ -5,13 +5,14 @@ import net.fabricmc.fabric.api.event.player.*;
 import net.fabricmc.fabric.api.event.server.ServerStopCallback;
 import net.fabricmc.fabric.api.registry.CommandRegistry;
 import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.network.ServerPlayerEntity;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.samo_lego.simpleauth.commands.*;
 import org.samo_lego.simpleauth.database.SimpleAuthDatabase;
 import org.samo_lego.simpleauth.event.AuthEventHandler;
+import org.samo_lego.simpleauth.event.entity.player.OnChatCallback;
+import org.samo_lego.simpleauth.event.entity.player.OnPlayerMoveCallback;
 import org.samo_lego.simpleauth.event.entity.player.PlayerJoinServerCallback;
 import org.samo_lego.simpleauth.event.entity.player.PlayerLeaveServerCallback;
 import org.samo_lego.simpleauth.event.item.DropItemCallback;
@@ -37,7 +38,7 @@ public class SimpleAuth implements DedicatedServerModInitializer {
 		// Creating data directory (database is stored there)
 		File file = new File("./mods/SimpleAuth");
 		if (!file.exists() && !file.mkdir())
-		    LOGGER.error("[SimpleAuth]: Error creating directory!");
+		    LOGGER.error("[SimpleAuth] Error creating directory!");
 
 
 		// Registering the commands
@@ -53,6 +54,9 @@ public class SimpleAuth implements DedicatedServerModInitializer {
 		PlayerJoinServerCallback.EVENT.register(AuthEventHandler::onPlayerJoin);
 		PlayerLeaveServerCallback.EVENT.register(AuthEventHandler::onPlayerLeave);
 		DropItemCallback.EVENT.register(AuthEventHandler::onDropItem);
+		//todo
+		OnChatCallback.EVENT.register(AuthEventHandler::onPlayerChat);
+		OnPlayerMoveCallback.EVENT.register(AuthEventHandler::onPlayerMove);
 		// From Fabric API
 		AttackBlockCallback.EVENT.register((playerEntity, world, hand, blockPos, direction) -> AuthEventHandler.onAttackBlock(playerEntity));
         UseBlockCallback.EVENT.register((player, world, hand, blockHitResult) -> AuthEventHandler.onUseBlock(player));

src/main/java/org/samo_lego/simpleauth/commands/LoginCommand.java

@@ -47,6 +47,9 @@ public class LoginCommand {
         }
         else if (AuthHelper.checkPass(player.getUuidAsString(), pass.toCharArray())) {
             SimpleAuth.authenticatedUsers.add(player);
+            // Player no longer needs to be invisible and invulnerable
+            player.setInvulnerable(false);
+            player.setInvisible(false);
             player.sendMessage(text);
             return 1;
         }

src/main/java/org/samo_lego/simpleauth/commands/RegisterCommand.java

@@ -50,6 +50,9 @@ public class RegisterCommand {
             String hash = AuthHelper.hashPass(pass1.toCharArray());
             if (SimpleAuth.db.registerUser(player.getUuidAsString(), source.getName(), hash)) {
                 SimpleAuth.authenticatedUsers.add(player);
+                // Player no longer needs to be invisible and invulnerable
+                player.setInvulnerable(false);
+                player.setInvisible(false);
                 player.sendMessage(registerSuccess);
                 return 1;
             }

src/main/java/org/samo_lego/simpleauth/event/AuthEventHandler.java

@@ -3,6 +3,7 @@ package org.samo_lego.simpleauth.event;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.ItemStack;
 import net.minecraft.server.network.ServerPlayerEntity;
+import net.minecraft.server.network.packet.ChatMessageC2SPacket;
 import net.minecraft.text.TranslatableText;
 import net.minecraft.util.ActionResult;
 import net.minecraft.util.TypedActionResult;
@@ -18,8 +19,12 @@ public class AuthEventHandler {
     // Player joining the server
     public static void onPlayerJoin(ServerPlayerEntity player) {
         // Player not authenticated
-        if (!SimpleAuth.isAuthenticated(player))
+        if (!SimpleAuth.isAuthenticated(player)) {
             player.sendMessage(notAuthenticated);
+            // Setting the player to be invisible to mobs and also invulnerable
+            player.setInvulnerable(true);
+            player.setInvisible(true);
+        }
     }
 
     // Player leaving the server
@@ -27,6 +32,28 @@ public class AuthEventHandler {
         SimpleAuth.authenticatedUsers.remove(player);
     }
 
+    // todo
+    public static ActionResult onPlayerChat(PlayerEntity player, ChatMessageC2SPacket chatMessageC2SPacket) {
+        String msg = chatMessageC2SPacket.getChatMessage();
+        System.out.println(msg);
+        if(!SimpleAuth.authenticatedUsers.contains(player) || !msg.startsWith("/login") || !msg.startsWith("/register")) {
+            System.out.println("Ok.");
+            player.sendMessage(notAuthenticated);
+            return ActionResult.FAIL;
+        }
+        System.out.println("Pass "+ msg.startsWith("/login")+msg.startsWith("/register"));
+        return ActionResult.PASS;
+    }
+    //todo
+    public static ActionResult onPlayerMove(PlayerEntity player) {
+        if(!SimpleAuth.authenticatedUsers.contains(player)) {
+            System.out.println("Ok. Moved & should fail. AuthEventHandler");
+            player.sendMessage(notAuthenticated);
+            return ActionResult.FAIL;
+        }
+        return ActionResult.PASS;
+    }
+
     // Using a block (right-click function)
     public static ActionResult onUseBlock(PlayerEntity player) {
         if(!SimpleAuth.authenticatedUsers.contains(player)) {

src/main/java/org/samo_lego/simpleauth/event/entity/player/OnChatCallback.java

@@ -0,0 +1,22 @@
+package org.samo_lego.simpleauth.event.entity.player;
+
+import net.fabricmc.fabric.api.event.Event;
+import net.fabricmc.fabric.api.event.EventFactory;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.server.network.packet.ChatMessageC2SPacket;
+import net.minecraft.util.ActionResult;
+
+public interface OnChatCallback {
+    Event<OnChatCallback> EVENT = EventFactory.createArrayBacked(OnChatCallback.class, listeners -> (player, chatMessageC2SPacket) -> {
+        for (OnChatCallback event : listeners) {
+            ActionResult result = event.onPlayerChat(player, chatMessageC2SPacket);
+
+            if (result != ActionResult.PASS) {
+                return result;
+            }
+        }
+        return ActionResult.PASS;
+    });
+
+    ActionResult onPlayerChat(PlayerEntity player, ChatMessageC2SPacket chatMessageC2SPacket);
+}

src/main/java/org/samo_lego/simpleauth/event/entity/player/OnPlayerMoveCallback.java

@@ -0,0 +1,22 @@
+package org.samo_lego.simpleauth.event.entity.player;
+
+import net.fabricmc.fabric.api.event.Event;
+import net.fabricmc.fabric.api.event.EventFactory;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.server.network.packet.ChatMessageC2SPacket;
+import net.minecraft.util.ActionResult;
+
+public interface OnPlayerMoveCallback {
+    Event<OnPlayerMoveCallback> EVENT = EventFactory.createArrayBacked(OnPlayerMoveCallback.class, listeners -> (player) -> {
+        for (OnPlayerMoveCallback event : listeners) {
+            ActionResult result = event.onPlayerMove(player);
+
+            if (result != ActionResult.PASS) {
+                return result;
+            }
+        }
+        return ActionResult.PASS;
+    });
+
+    ActionResult onPlayerMove(PlayerEntity player);
+}

src/main/java/org/samo_lego/simpleauth/event/entity/player/PlayerJoinServerCallback.java

@@ -5,7 +5,6 @@ import net.fabricmc.fabric.api.event.EventFactory;
 import net.minecraft.server.network.ServerPlayerEntity;
 
 public interface PlayerJoinServerCallback {
-
     Event<PlayerJoinServerCallback> EVENT = EventFactory.createArrayBacked(PlayerJoinServerCallback.class, listeners -> (player) -> {
         for (PlayerJoinServerCallback callback : listeners) {
             callback.onPlayerJoin(player);

src/main/java/org/samo_lego/simpleauth/event/item/DropItemCallback.java

@@ -9,7 +9,6 @@ public interface DropItemCallback {
     Event<DropItemCallback> EVENT = EventFactory.createArrayBacked(DropItemCallback.class, listeners -> (player) -> {
         for (DropItemCallback event : listeners) {
             ActionResult result = event.onDropItem(player);
-
             if (result != ActionResult.PASS) {
                 return result;
             }

src/main/java/org/samo_lego/simpleauth/mixin/MixinEntity.java

@@ -1,20 +0,0 @@
-package org.samo_lego.simpleauth.mixin;
-
-import net.minecraft.entity.Entity;
-import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.server.network.ServerPlayerEntity;
-import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.injection.At;
-import org.spongepowered.asm.mixin.injection.Inject;
-import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
-
-@Mixin(Entity.class)
-public abstract class MixinEntity {
-
-    /*@Inject(method = "canSeePlayer", at = @At("HEAD"), cancellable = true)
-    private void canSeePlayer(PlayerEntity playerEntity_1, CallbackInfoReturnable<Boolean> info) {
-        if(!CanSeePlayerCallback.EVENT.invoker().canSeePlayer((ServerPlayerEntity) playerEntity_1))
-            info.setReturnValue(false);
-
-    }*/
-}

src/main/java/org/samo_lego/simpleauth/mixin/MixinServerPlayNetworkHandler.java

@@ -0,0 +1,43 @@
+package org.samo_lego.simpleauth.mixin;
+
+import net.minecraft.server.network.ServerPlayNetworkHandler;
+import net.minecraft.server.network.ServerPlayerEntity;
+import net.minecraft.server.network.packet.ChatMessageC2SPacket;
+import net.minecraft.server.network.packet.PlayerMoveC2SPacket;
+import net.minecraft.util.ActionResult;
+import org.samo_lego.simpleauth.event.entity.player.OnChatCallback;
+import org.samo_lego.simpleauth.event.entity.player.OnPlayerMoveCallback;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+@Mixin(ServerPlayNetworkHandler.class)
+public class MixinServerPlayNetworkHandler {
+    @Shadow
+    public ServerPlayerEntity player;
+
+    // TODO
+    @Inject(method = "onChatMessage", at = @At(value = "HEAD"), cancellable = true)
+    private void onChatMessage(ChatMessageC2SPacket chatMessageC2SPacket_1, CallbackInfoReturnable cir) {
+        ActionResult result = OnChatCallback.EVENT.invoker().onPlayerChat(player, chatMessageC2SPacket_1);
+
+        System.out.println("Mixined");
+        if (result == ActionResult.FAIL) {
+            cir.cancel();
+        }
+    }
+
+    // TODO
+    @Inject(method="onPlayerMove", at = @At(value = "HEAD"), cancellable = true)
+    private void onPlayerMove(PlayerMoveC2SPacket playerMoveC2SPacket_1, CallbackInfo cir) {
+        ActionResult result = OnPlayerMoveCallback.EVENT.invoker().onPlayerMove(player);
+
+        System.out.println("Player move");
+        if (result == ActionResult.FAIL) {
+            cir.cancel();
+        }
+    }
+}