Add PlayerRespawnEvent

Author: Fox2Code

loader/src/main/java/com/fox2code/foxloader/event/player/PlayerRespawnEvent.java

@@ -0,0 +1,33 @@
+/*
+ * MIT License
+ * 
+ * Copyright (c) 2023-2025 Fox2Code
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.fox2code.foxloader.event.player;
+
+import net.minecraft.common.entity.player.EntityPlayer;
+import org.jetbrains.annotations.NotNull;
+
+public final class PlayerRespawnEvent extends PlayerEvent {
+    public PlayerRespawnEvent(@NotNull EntityPlayer entityPlayer) {
+        super(entityPlayer);
+    }
+}

loader/src/main/java/com/fox2code/foxloader/internal/InternalPlayerHooks.java

@@ -27,6 +27,7 @@
 import com.fox2code.foxloader.event.player.PlayerChatEvent;
 import com.fox2code.foxloader.event.player.PlayerJoinEvent;
 import com.fox2code.foxloader.event.player.PlayerLeaveEvent;
+import com.fox2code.foxloader.event.player.PlayerRespawnEvent;
 import net.minecraft.common.entity.player.EntityPlayer;
 import net.minecraft.common.networking.Packet3Chat;
 import net.minecraft.server.MinecraftServer;
@@ -38,6 +39,8 @@ public final class InternalPlayerHooks {
             EventHolder.getHolderFromEvent(PlayerJoinEvent.class);
     private static final EventHolder<PlayerLeaveEvent> PLAYER_LEAVE_EVENT =
             EventHolder.getHolderFromEvent(PlayerLeaveEvent.class);
+    private static final EventHolder<PlayerRespawnEvent> PLAYER_RESPAWN_EVENT =
+            EventHolder.getHolderFromEvent(PlayerRespawnEvent.class);
 
     private InternalPlayerHooks() {}
 
@@ -65,4 +68,9 @@ public static void sendPlayerLeaveEvent(MinecraftServer minecraftServer, EntityP
             minecraftServer.configManager.sendPacketToAllPlayers(new Packet3Chat(playerJoinEvent.getLeaveMessage()));
         }
     }
+
+    public static void sendPlayerRespawnEvent(EntityPlayer entityPlayer) {
+        if (PLAYER_RESPAWN_EVENT.isEmpty()) return;
+        PLAYER_RESPAWN_EVENT.callEvent(new PlayerRespawnEvent(entityPlayer));
+    }
 }

patching/src/main/java/com/fox2code/foxloader/patching/game/ClientGameDirectoryPatch.java

@@ -136,6 +136,14 @@ public ClassNode transform(ClassNode classNode) {
                 changeWorldSetPlayer.add(notNewPlayer);
                 changeWorld.instructions.insert(setPlayer, changeWorldSetPlayer);
             }
+            MethodNode respawnPlayer = TransformerUtils.getMethod(classNode, "respawn");
+            InsnList respawnPlayerAppend = new InsnList();
+            respawnPlayerAppend.add(new VarInsnNode(ALOAD, 0));
+            respawnPlayerAppend.add(new FieldInsnNode(GETFIELD,
+                    Minecraft, "thePlayer", "L" + EntityPlayerSP + ";"));
+            respawnPlayerAppend.add(new MethodInsnNode(INVOKESTATIC, InternalPlayerHooks,
+                    "sendPlayerRespawnEvent", "(L" + EntityPlayer + ";)V"));
+            TransformerUtils.insertToEndOfCode(respawnPlayer, respawnPlayerAppend);
         }
         return classNode;
     }

patching/src/main/java/com/fox2code/foxloader/patching/game/NetworkConnectionPatch.java

@@ -80,6 +80,8 @@ public ClassNode transform(ClassNode classNode) {
                 return transformPacket(classNode);
             case Packet2ClientProtocol:
                 return transformPacket2ClientProtocol(classNode);
+            case ServerConfigurationManager:
+                return transformServerConfigurationManager(classNode);
             case NetClientHandler:
                 return transformNetHandlers(classNode, true, false, false);
             case NetLoginHandler:
@@ -449,6 +451,21 @@ private static ClassNode transformPacket2ClientProtocol(ClassNode classNode) {
         return classNode;
     }
 
+    private ClassNode transformServerConfigurationManager(ClassNode classNode) {
+        MethodNode methodNode = TransformerUtils.getMethod(classNode, "respawnPlayer");
+        AbstractInsnNode aReturn = TransformerUtils.previousCodeInsn(TransformerUtils.getEndingLabelNode(methodNode));
+        VarInsnNode aLoad = (VarInsnNode) TransformerUtils.previousCodeInsn(aReturn);
+        if (aLoad.getOpcode() != Opcodes.ALOAD) {
+            throw new RuntimeException("Not ALOAD");
+        }
+        InsnList append = new InsnList();
+        append.add(new VarInsnNode(ALOAD, aLoad.var));
+        append.add(new MethodInsnNode(INVOKESTATIC, InternalPlayerHooks,
+                "sendPlayerRespawnEvent", "(L" + EntityPlayer + ";)V"));
+        methodNode.instructions.insertBefore(aLoad, append);
+        return classNode;
+    }
+
     public static ClassNode transformNetHandlers(ClassNode classNode, boolean client, boolean login, boolean server) {
         String owner = classNode.name;
         FieldNode networkManagerField =