From 4d4d1e9c69a15e154bc358f1363b961de80b27d6 Mon Sep 17 00:00:00 2001
From: Lukas Pioch <lukas@zgow.de>
Date: Mon, 18 May 2015 22:29:39 +0200
Subject: Added hooks HOOK_ENTITY_CHANGE_WORLD and HOOK_ENTITY_CHANGED_WORLD
 Fixes #1435.

---
 src/Entities/Entity.cpp | 11 +++++++++++
 src/Entities/Player.cpp | 10 ++++++++++
 2 files changed, 21 insertions(+)

(limited to 'src/Entities')

diff --git a/src/Entities/Entity.cpp b/src/Entities/Entity.cpp
index 4a909a1fd..bc2b3e93e 100644
--- a/src/Entities/Entity.cpp
+++ b/src/Entities/Entity.cpp
@@ -1403,14 +1403,25 @@ bool cEntity::DoMoveToWorld(cWorld * a_World, bool a_ShouldSendRespawn)
 		return false;
 	}
 
+	//  Ask the plugins if the entity is allowed to change the world
+	if (cRoot::Get()->GetPluginManager()->CallHookEntityChangeWorld(*this, *a_World))
+	{
+		// A Plugin doesn't allow the entity to change the world
+		return false;
+	}
+
 	// Remove all links to the old world
 	SetWorldTravellingFrom(GetWorld());  // cChunk::Tick() handles entity removal
 	GetWorld()->BroadcastDestroyEntity(*this);
 
 	// Queue add to new world
 	a_World->AddEntity(this);
+	cWorld * OldWorld = cRoot::Get()->GetWorld(GetWorld()->GetName());  // Required for the hook HOOK_ENTITY_CHANGED_WORLD
 	SetWorld(a_World);
 
+	// Entity changed the world, call the hook
+	cRoot::Get()->GetPluginManager()->CallHookEntityChangedWorld(*this, *OldWorld);
+
 	return true;
 }
 
diff --git a/src/Entities/Player.cpp b/src/Entities/Player.cpp
index 607a663de..01ad26297 100644
--- a/src/Entities/Player.cpp
+++ b/src/Entities/Player.cpp
@@ -1606,6 +1606,12 @@ bool cPlayer::DoMoveToWorld(cWorld * a_World, bool a_ShouldSendRespawn)
 		return false;
 	}
 	
+	if (cRoot::Get()->GetPluginManager()->CallHookEntityChangeWorld(*this, *a_World))
+	{
+		// A Plugin doesn't allow the player to change the world
+		return false;
+	}
+
 	// Send the respawn packet:
 	if (a_ShouldSendRespawn && (m_ClientHandle != nullptr))
 	{
@@ -1621,6 +1627,7 @@ bool cPlayer::DoMoveToWorld(cWorld * a_World, bool a_ShouldSendRespawn)
 
 	// Queue adding player to the new world, including all the necessary adjustments to the object
 	a_World->AddPlayer(this);
+	cWorld * OldWorld = cRoot::Get()->GetWorld(GetWorld()->GetName());  // Required for the hook HOOK_ENTITY_CHANGED_WORLD
 	SetWorld(a_World);  // Chunks may be streamed before cWorld::AddPlayer() sets the world to the new value
 
 	// Update the view distance.
@@ -1635,6 +1642,9 @@ bool cPlayer::DoMoveToWorld(cWorld * a_World, bool a_ShouldSendRespawn)
 	// Broadcast the player into the new world.
 	a_World->BroadcastSpawnEntity(*this);
 	
+	// Player changed the world, call the hook
+	cRoot::Get()->GetPluginManager()->CallHookEntityChangedWorld(*this, *OldWorld);
+
 	return true;
 }
 
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