From bcf38a2ad19116b50d0456bdd6f79d0d218e39d1 Mon Sep 17 00:00:00 2001
From: kwolekr <kwolekr@minetest.net>
Date: Sat, 15 Aug 2015 14:03:36 -0400
Subject: [PATCH] SEnv: Remove static_exists from ActiveObjects in deleted
 blocks

---
 src/environment.cpp          | 28 +++++++++++++++++++++++++++-
 src/environment.h            |  5 +++++
 src/script/lua_api/l_env.cpp |  6 ++++--
 3 files changed, 36 insertions(+), 3 deletions(-)

diff --git a/src/environment.cpp b/src/environment.cpp
index 5bed11476..dbbfc6f1f 100644
--- a/src/environment.cpp
+++ b/src/environment.cpp
@@ -1424,6 +1424,33 @@ void ServerEnvironment::getRemovedActiveObjects(v3s16 pos, s16 radius,
 	}
 }
 
+void ServerEnvironment::setStaticForActiveObjectsInBlock(
+	v3s16 blockpos, bool static_exists, v3s16 static_block)
+{
+	MapBlock *block = m_map->getBlockNoCreateNoEx(blockpos);
+	if (!block)
+		return;
+
+	for (std::map<u16, StaticObject>::iterator
+			so_it = block->m_static_objects.m_active.begin();
+			so_it != block->m_static_objects.m_active.end(); ++so_it) {
+		// Get the ServerActiveObject counterpart to this StaticObject
+		std::map<u16, ServerActiveObject *>::iterator ao_it;
+		ao_it = m_active_objects.find(so_it->first);
+		if (ao_it == m_active_objects.end()) {
+			// If this ever happens, there must be some kind of nasty bug.
+			errorstream << "ServerEnvironment::setStaticForObjectsInBlock(): "
+				"Object from MapBlock::m_static_objects::m_active not found "
+				"in m_active_objects";
+			continue;
+		}
+
+		ServerActiveObject *sao = ao_it->second;
+		sao->m_static_exists = static_exists;
+		sao->m_static_block  = static_block;
+	}
+}
+
 ActiveObjectMessage ServerEnvironment::getActiveObjectMessage()
 {
 	if(m_active_object_messages.empty())
@@ -1960,7 +1987,6 @@ void ServerEnvironment::deactivateFarObjects(bool force_delete)
 	}
 }
 
-
 #ifndef SERVER
 
 #include "clientsimpleobject.h"
diff --git a/src/environment.h b/src/environment.h
index 2bc128f40..c70694316 100644
--- a/src/environment.h
+++ b/src/environment.h
@@ -327,6 +327,11 @@ public:
 
 	std::set<v3s16>* getForceloadedBlocks() { return &m_active_blocks.m_forceloaded_list; };
 
+	// Sets the static object status all the active objects in the specified block
+	// This is only really needed for deleting blocks from the map
+	void setStaticForActiveObjectsInBlock(v3s16 blockpos,
+		bool static_exists, v3s16 static_block=v3s16(0,0,0));
+
 private:
 
 	/*
diff --git a/src/script/lua_api/l_env.cpp b/src/script/lua_api/l_env.cpp
index 9d1936769..28afdd071 100644
--- a/src/script/lua_api/l_env.cpp
+++ b/src/script/lua_api/l_env.cpp
@@ -773,10 +773,12 @@ int ModApiEnvMod::l_delete_area(lua_State *L)
 	for (s16 y = bpmin.Y; y <= bpmax.Y; y++)
 	for (s16 x = bpmin.X; x <= bpmax.X; x++) {
 		v3s16 bp(x, y, z);
-		if (map.deleteBlock(bp))
+		if (map.deleteBlock(bp)) {
+			env->setStaticForActiveObjectsInBlock(bp, false);
 			event.modified_blocks.insert(bp);
-		else
+		} else {
 			success = false;
+		}
 	}
 
 	map.dispatchEvent(&event);