initial commit

depends.txt

@@ -0,0 +1 @@
+default

init.lua

@@ -0,0 +1,83 @@
+-- ANTI GRIEF by rnd
+-- Copyright 2016 rnd
+
+----------------------------------------------------------------------------
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+
+-- You should have received a copy of the GNU General Public License
+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.
+----------------------------------------------------------------------------
+
+
+-- prevents placing of lava/liquid sources or buckets above 0
+
+
+--water
+--bucket:bucket_water
+
+function prevent_place_above(name)
+
+	local old_on_place=minetest.registered_craftitems[name];--.on_place;
+	local old_after_place_node = minetest.registered_nodes[name];--.after_place_node;
+	--after_place_node = func(pos, placer, itemstack, pointed_thing)
+	
+	if old_on_place and old_on_place.on_place then
+		old_on_place=old_on_place.on_place;
+		minetest.registered_craftitems[name].on_place=function(itemstack, placer, pointed_thing)
+			local pos = pointed_thing.above
+			if pos.y>0 then
+				minetest.log("action","ANTI GRIEF " .. placer:get_player_name() .. " tried to place " .. name .. " at " .. minetest.pos_to_string(pos));
+				return itemstack
+			else
+				return old_on_place(itemstack, placer, pointed_thing)
+			end
+		end
+	return;
+	end
+
+	if old_after_place_node then
+
+		old_after_place_node=old_after_place_node.after_place_node
+		
+		local table = minetest.registered_nodes[name];
+		local table2 = {}
+		for i,v in pairs(table) do
+			table2[i] = v
+		end
+		
+		table2.after_place_node=function(pos, placer, itemstack, pointed_thing)
+			--after_place_node = func(pos, placer, itemstack, pointed_thing)
+			local pos = pointed_thing.above
+			if pos.y>0 then
+				minetest.log("action","ANTI GRIEF " .. placer:get_player_name() .. " tried to place " .. name .. " at " .. minetest.pos_to_string(pos));
+				minetest.set_node(pos, {name = "air"});
+				return itemstack
+			end
+		end
+		
+		
+		minetest.register_node(":"..name, table2)
+		return;
+	end 
+	
+		
+	return;
+end
+	
+
+minetest.after(0,
+function ()
+prevent_place_above("bucket:bucket_water");
+prevent_place_above("default:water_source");
+prevent_place_above("bucket:bucket_lava");
+prevent_place_above("default:lava_source");
+end
+)