Initial commit

init.lua

@@ -0,0 +1,53 @@
+if minetest.settings:get_bool("disable_fly_anticheat", false) then
+	return
+end
+
+local players = {}
+
+local pts = minetest.pos_to_string
+
+minetest.register_on_joinplayer(function(player)
+	players[player] = {
+		pos = player:get_pos()
+	}
+end)
+
+minetest.register_on_leaveplayer(function(player)
+	players[player] = nil
+end)
+
+local function supported_by_node(pos)
+	pos = vector.floor(pos)
+
+	for y = -2, 0 do
+	for x = -1, 1 do
+	for z = -1, 1 do
+		local v = vector.add(pos, vector.new(x, y, z))
+		
+		if minetest.get_node(v).name ~= "air" then
+			return true
+		end
+	end
+	end
+	end
+end
+
+local i = 0
+
+minetest.register_globalstep(function()
+	i = i + 1
+	
+	for _, player in pairs(minetest.get_connected_players()) do
+		if not minetest.check_player_privs(player:get_player_name(), {fly = true}) then
+			local pos = player:get_pos()
+			local old_pos = players[player].pos
+
+			if old_pos.y < pos.y and not supported_by_node(pos) then
+				player:set_pos(old_pos)
+				print(i, pts(pos), pts(old_pos))
+			end
+		end
+
+		players[player].pos = player:get_pos()
+	end
+end)