diff --git a/src/cat/LuaScriptInterface.cpp b/src/cat/LuaScriptInterface.cpp
index 4867009dd..365d5cea5 100644
--- a/src/cat/LuaScriptInterface.cpp
+++ b/src/cat/LuaScriptInterface.cpp
@@ -438,6 +438,7 @@ void LuaScriptInterface::initSimulationAPI()
 	//Methods
 	struct luaL_reg simulationAPIMethods [] = {
 		{"partNeighbours", simulation_partNeighbours},
+		{"partNeighbors", simulation_partNeighbours},
 		{"partChangeType", simulation_partChangeType},
 		{"partCreate", simulation_partCreate},
 		{"partProperty", simulation_partProperty},
@@ -479,10 +480,13 @@ void LuaScriptInterface::initSimulationAPI()
 		{"gravityMode", simulation_gravityMode},
 		{"airMode", simulation_airMode},
 		{"waterEqualisation", simulation_waterEqualisation},
+		{"waterEqualization", simulation_waterEqualisation},
 		{"ambientAirTemp", simulation_ambientAirTemp},
 		{"elementCount", simulation_elementCount},
 		{"parts", simulation_parts},
 		{"pmap", simulation_pmap},
+		{"neighbours", simulation_neighbours},
+		{"neighbors", simulation_neighbours},
 		{NULL, NULL}
 	};
 	luaL_register(l, "simulation", simulationAPIMethods);
@@ -556,54 +560,41 @@ void LuaScriptInterface::set_map(int x, int y, int width, int height, float valu
 		}
 }
 
-int NeighboursClosure(lua_State * l)
-{
-	int rx=lua_tointeger(l, lua_upvalueindex(1));
-	int ry=lua_tointeger(l, lua_upvalueindex(2));
-	int sx=lua_tointeger(l, lua_upvalueindex(3));
-	int sy=lua_tointeger(l, lua_upvalueindex(4));
-	int x=lua_tointeger(l, lua_upvalueindex(5));
-	int y=lua_tointeger(l, lua_upvalueindex(6));
-	int i;
-	do
-	{
-		x++;
-		if(x>rx)
-		{
-			x=-rx;
-			y++;
-			if(y>ry)
-				return 0;
-		}
-		if(sx+x<0 || sy+y<0 || sx+x>=XRES*CELL || sy+y>=YRES*CELL)
-		{
-			continue;
-		}
-		i=luacon_sim->pmap[y+sx][x+sx];
-	} while(!i&0xFF);
-	lua_pushnumber(l, x);
-	lua_replace(l, lua_upvalueindex(5));
-	lua_pushnumber(l, y);
-	lua_replace(l, lua_upvalueindex(6));
-	lua_pushnumber(l, i>>8);
-	lua_pushnumber(l, x+sx);
-	lua_pushnumber(l, y+sy);
-	return 3;
-}
-
 int LuaScriptInterface::simulation_partNeighbours(lua_State * l)
 {
-	int x=luaL_checkint(l, 1);
-	int y=luaL_checkint(l, 2);
-	int rx=luaL_optint(l, 3, 2);
-	int ry=luaL_optint(l, 4, 2);
-	lua_pushnumber(l, rx);
-	lua_pushnumber(l, ry);
-	lua_pushnumber(l, x);
-	lua_pushnumber(l, y);
-	lua_pushnumber(l, -rx-1);
-	lua_pushnumber(l, -ry);
-	lua_pushcclosure(l, NeighboursClosure, 6);
+	lua_newtable(l);
+	int id = 0;
+	if(lua_gettop(l) == 4)
+	{
+		int x = lua_tointeger(l, 1), y = lua_tointeger(l, 2), r = lua_tointeger(l, 3), t = lua_tointeger(l, 4), rx, ry, n;
+		for (rx = -r; rx <= r; rx++)
+			for (ry = -r; ry <= r; ry++)
+				if (x+rx >= 0 && y+ry >= 0 && x+rx < XRES && y+ry < YRES && (rx || ry))
+				{
+					n = luacon_sim->pmap[y+ry][x+rx];
+					if(n && (n&0xFF) == t)
+					{
+						lua_pushinteger(l, n>>8);
+						lua_rawseti(l, -2, id++);
+					}
+				}
+
+	}
+	else
+	{
+		int x = lua_tointeger(l, 1), y = lua_tointeger(l, 2), r = lua_tointeger(l, 3), rx, ry, n;
+		for (rx = -r; rx <= r; rx++)
+			for (ry = -r; ry <= r; ry++)
+				if (x+rx >= 0 && y+ry >= 0 && x+rx < XRES && y+ry < YRES && (rx || ry))
+				{
+					n = luacon_sim->pmap[y+ry][x+rx];
+					if(n)
+					{
+						lua_pushinteger(l, n>>8);
+						lua_rawseti(l, -2, id++);
+					}
+				}
+	}
 	return 1;
 }
 
@@ -1557,6 +1548,58 @@ int LuaScriptInterface::simulation_pmap(lua_State * l)
 	return 1;
 }
 
+
+int NeighboursClosure(lua_State * l)
+{
+	int rx=lua_tointeger(l, lua_upvalueindex(1));
+	int ry=lua_tointeger(l, lua_upvalueindex(2));
+	int sx=lua_tointeger(l, lua_upvalueindex(3));
+	int sy=lua_tointeger(l, lua_upvalueindex(4));
+	int x=lua_tointeger(l, lua_upvalueindex(5));
+	int y=lua_tointeger(l, lua_upvalueindex(6));
+	int i = 0;
+	do
+	{
+		x++;
+		if(x>rx)
+		{
+			x=-rx;
+			y++;
+			if(y>ry)
+				return 0;
+		}
+		if(!(x && y) || sx+x<0 || sy+y<0 || sx+x>=XRES*CELL || sy+y>=YRES*CELL)
+		{
+			continue;
+		}
+		i=luacon_sim->pmap[y+sx][x+sx];
+	} while(!i&0xFF);
+	lua_pushnumber(l, x);
+	lua_replace(l, lua_upvalueindex(5));
+	lua_pushnumber(l, y);
+	lua_replace(l, lua_upvalueindex(6));
+	lua_pushnumber(l, i>>8);
+	lua_pushnumber(l, x+sx);
+	lua_pushnumber(l, y+sy);
+	return 3;
+}
+
+int LuaScriptInterface::simulation_neighbours(lua_State * l)
+{
+	int x=luaL_checkint(l, 1);
+	int y=luaL_checkint(l, 2);
+	int rx=luaL_optint(l, 3, 2);
+	int ry=luaL_optint(l, 4, 2);
+	lua_pushnumber(l, rx);
+	lua_pushnumber(l, ry);
+	lua_pushnumber(l, x);
+	lua_pushnumber(l, y);
+	lua_pushnumber(l, -rx-1);
+	lua_pushnumber(l, -ry);
+	lua_pushcclosure(l, NeighboursClosure, 6);
+	return 1;
+}
+
 //// Begin Renderer API
 
 void LuaScriptInterface::initRendererAPI()
diff --git a/src/cat/LuaScriptInterface.h b/src/cat/LuaScriptInterface.h
index 1b3d1df9a..298385f54 100644
--- a/src/cat/LuaScriptInterface.h
+++ b/src/cat/LuaScriptInterface.h
@@ -103,6 +103,7 @@ class LuaScriptInterface: public CommandInterface
 	static int simulation_elementCount(lua_State * l);
 	static int simulation_parts(lua_State * l);
 	static int simulation_pmap(lua_State * l);
+	static int simulation_neighbours(lua_State * l);
 
 	//Renderer
 	void initRendererAPI();