246 lines
12 KiB
Lua
Executable File
246 lines
12 KiB
Lua
Executable File
-- Minetest 0.4.13+ mod: minimal_anticheat
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-- Make cheating harder as possible without sacraficing too much performance
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--
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-- See README.txt for licensing and other information.
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minimal_anticheat = {}
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minimal_anticheat.clip_nodes = {
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["default:stone"]=1, ["default:cobble"]=1, ["default:stonebrick"]=1, ["default:obsidian"]=1, ["default:obsidianbrick"]=1,
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["default:dirt"]=1, ["default:dirt_with_grass"]=1,
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-- ["ignore"]=1,
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}
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minimal_anticheat.sureclip_nodes = {
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["default:stone_with_coal"]=1, ["default:default:stone_with_iron"]=1, ["default:stone_with_copper"]=1,
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["default:stone_with_gold"]=1, ["default:stone_with_mese"]=1, ["default:stone_with_diamond"]=1
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}
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minimal_anticheat.secondary_check_cheater_on_coal = function(player, pos)
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if player and player:is_player() and player:get_hp() > 0 and
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(minimal_anticheat.sureclip_nodes[minetest.get_node(pos).name] == 1 or
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minimal_anticheat.clip_nodes[minetest.get_node(pos).name] == 1) then
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player:punch(player, 1.0, {
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full_punch_interval=1.0,
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damage_groups = {fleshy=20}
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}, {x=0, y=1, z=0})
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local name = player:get_player_name()
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minetest.chat_send_all("Player "..name.." suspected in noclip cheat");
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minetest.log("action", "Player "..name.." at "..minetest.pos_to_string(vector.round(pos)).." suspected in noclip cheat - oncoal");
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end
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end
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minimal_anticheat.check_cheater_on_coal = function ()
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for _,player in pairs(minetest.get_connected_players()) do
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if math.random(1, 100) > 50 and player and player:is_player() then
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local pos1 = player:get_pos()
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local pos2 = {x=pos1.x, y=pos1.y+1, z=pos1.z}
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if player:get_hp() > 0 and pos1.y < -50 then --check noclip miners
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local n1 = minetest.get_node(pos1)
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local n2 = minetest.get_node(pos2)
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if minimal_anticheat.sureclip_nodes[n1.name] == 1 or minimal_anticheat.sureclip_nodes[n2.name] == 1 then
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--after some delay check again, may-be that was just lag while digging
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minetest.after(5.0, minimal_anticheat.secondary_check_cheater_on_coal, player, pos2)
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end
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end
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end
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end
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minetest.after(8.0, minimal_anticheat.check_cheater_on_coal)
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end
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minetest.after(8.0, minimal_anticheat.check_cheater_on_coal)
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minimal_anticheat.secondary_check_cheater_in_wall = function(player, pos)
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if player and player:is_player() and player:get_hp() > 0 and
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minimal_anticheat.clip_nodes[minetest.get_node(pos).name] == 1 then
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player:punch(player, 1.0, {
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full_punch_interval=1.0,
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damage_groups = {fleshy=10}
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}, {x=0, y=1, z=0})
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local name = player:get_player_name()
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local is near_teleport_or_spawn = false
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if _G["teleports"] and teleports.teleports then
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for i, EachTeleport in ipairs(teleports.teleports) do
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if vector.distance(EachTeleport.pos, pos) < 5 then
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near_teleport_or_spawn = true
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end
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end
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end
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local is_near_block_mover = false
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-- for now only support "electricity" mod piston.
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local positions = minetest.find_nodes_in_area(
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{x=pos.x-2, y=pos.y-2, z=pos.z-2},
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{x=pos.x+2, y=pos.y+2, z=pos.z+2},
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{"electricity:piston_pusher_sticky"})
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if #positions > 0 then
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is_near_block_mover = true
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end
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if is_near_block_mover then
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minetest.chat_send_all("Player "..name.." is crushed");
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minetest.log("action", "Player "..name.." at "..minetest.pos_to_string(vector.round(pos)).." not suspected in noclip cheat - inwall");
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elseif near_teleport_or_spawn then
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minetest.chat_send_all("Player "..name.." had teleportation accident");
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minetest.log("action", "Player "..name.." at "..minetest.pos_to_string(vector.round(pos)).." not suspected in noclip cheat - inwall");
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else
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minetest.chat_send_all("Player "..name.." suspected in noclip cheat");
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minetest.log("action", "Player "..name.." at "..minetest.pos_to_string(vector.round(pos)).." suspected in noclip cheat - inwall");
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end
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end
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end
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minimal_anticheat.check_cheater_in_wall = function ()
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for _,player in pairs(minetest.get_connected_players()) do
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if math.random(1, 100) > 50 and player and player:is_player() then
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local pos1 = player:get_pos()
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local pos2 = {x=pos1.x, y=pos1.y+1, z=pos1.z}
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if player:get_hp() > 0 then --check noclip cheaters
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local n1 = minetest.get_node(pos1)
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local n2 = minetest.get_node(pos2)
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if minimal_anticheat.clip_nodes[n1.name] == 1 and minimal_anticheat.clip_nodes[n2.name] == 1 then
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local info = minetest.get_player_information(player:get_player_name())
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if info['connection_uptime'] > 16 then
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--after some delay check again, may-be that was just lag while digging
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minetest.after(4.0, minimal_anticheat.secondary_check_cheater_in_wall, player, pos2)
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else
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--maybe somebody just built where player was located before
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player:set_pos({x=0, y=3, z=0})
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end
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end
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end
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end
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end
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minetest.after(8.0, minimal_anticheat.check_cheater_in_wall)
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end
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minetest.after(8.0, minimal_anticheat.check_cheater_in_wall)
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minimal_anticheat.check_cheater_on_air = function ()
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for _,player in pairs(minetest.get_connected_players()) do
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if math.random(1, 100) > 50 and player and player:is_player() then
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local pos = player:get_pos()
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if player:get_hp() > 0 and pos.y > 10 then --check on air
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local positions = minetest.find_nodes_in_area(
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{x=pos.x-3, y=pos.y-3, z=pos.z-3},
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{x=pos.x+3, y=pos.y+3, z=pos.z+3},
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{"air", "ignore"})
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if #positions == 343 then --only air around
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player:punch(player, 1.0, {
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full_punch_interval=1.0,
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damage_groups = {fleshy=18}
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}, {x=0, y=-1, z=0})
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local name = player:get_player_name()
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-- area may be just legitimately not loaded yet
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local is near_teleport_or_spawn = false
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if _G["teleports"] and teleports.teleports then
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for i, EachTeleport in ipairs(teleports.teleports) do
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if vector.distance(EachTeleport.pos, pos) < 3 then
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near_teleport_or_spawn = true
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end
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end
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end
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if vector.distance({x=0, y=0, z=0}, pos) < 3 then
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near_teleport_or_spawn = true
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end
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if _G["beds"] and beds.spawn and beds.spawn[name] ~= nil then
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if vector.distance(beds.spawn[name], pos) < 3 then
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near_teleport_or_spawn = true
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end
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end
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if near_teleport_or_spawn then
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minetest.chat_send_all("Player "..name.." had teleportation accident");
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minetest.log("action", "Player "..name.." at "..minetest.pos_to_string(vector.round(pos)).." not suspected in fly cheat");
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else
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minetest.chat_send_all("Player "..name.." suspected in fly cheat");
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minetest.log("action", "Player "..name.." at "..minetest.pos_to_string(vector.round(pos)).." suspected in fly cheat");
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end
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end
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end
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end
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end
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minetest.after(16.0, minimal_anticheat.check_cheater_on_air)
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end
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minetest.after(16.0, minimal_anticheat.check_cheater_on_air)
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-- Count how many times engine triggered for player
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minimal_anticheat.count_engine = {}
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--testing built-in anticheat engine...
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minimal_anticheat.check_cheater_by_engine = function (player, cheat)
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if player:is_player() then
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local name = player:get_player_name()
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local pos = player:get_pos()
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local text_pos = minetest.pos_to_string(vector.round(pos))
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minetest.log("action", "Player "..name.." at "..text_pos.." suspected in some cheat: "..cheat.type);
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if cheat.type == "dug_too_fast" then
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-- looks like this one has almost no false-positives, punish him hard.
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if player:get_hp() > 0 then
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player:punch(player, 1.0, {
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full_punch_interval=1.0,
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damage_groups = {fleshy=4}
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}, {x=0, y=-1, z=0})
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minetest.chat_send_all("Player "..name.." suspected in dig cheat");
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end
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elseif cheat.type == "interacted_too_far" then
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--it happens to regular players too, so don't be too harsh...
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if minimal_anticheat.count_engine[name] ~= nil and (minimal_anticheat.count_engine[name]) % 10 == 0 then
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if player:get_hp() > 0 then
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player:punch(player, 1.0, {
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full_punch_interval=1.0,
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damage_groups = {fleshy=4}
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}, {x=0, y=-1, z=0})
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minetest.chat_send_all("Player "..name.." suspected in too far cheat (maybe) "..minimal_anticheat.count_engine[name]);
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end
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end
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elseif cheat.type == "moved_too_fast" then
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--it happens to regular players too, so don't be too harsh...
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if minimal_anticheat.count_engine[name] ~= nil and (minimal_anticheat.count_engine[name]) % 10 == 0 then
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if player:get_hp() > 0 then
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player:punch(player, 1.0, {
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full_punch_interval=1.0,
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damage_groups = {fleshy=4}
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}, {x=0, y=-1, z=0})
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minetest.chat_send_all("Player "..name.." suspected in too fast cheat (maybe) "..minimal_anticheat.count_engine[name]);
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end
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end
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elseif cheat.type == "dug_unbreakable" then
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--it happens to regular players too?
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if minimal_anticheat.count_engine[name] ~= nil and (minimal_anticheat.count_engine[name]) % 10 == 0 then
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if player:get_hp() > 0 then
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player:punch(player, 1.0, {
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full_punch_interval=1.0,
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damage_groups = {fleshy=4}
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}, {x=0, y=-1, z=0})
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minetest.chat_send_all("Player "..name.." suspected in dug unbreakable cheat (maybe) "..minimal_anticheat.count_engine[name]);
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end
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end
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elseif cheat.type == "interacted_while_dead" then
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--it happens to regular players too?
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if minimal_anticheat.count_engine[name] ~= nil and (minimal_anticheat.count_engine[name]) % 10 == 0 then
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if player:is_player() then
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-- no point to punching dead, so kick him.
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minetest.after(math.random(0,30)/10, function(name)
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local player = minetest.get_player_by_name(name)
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if player == nil then
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minetest.log("warning", "Dead cheater is not present for kick")
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end
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minetest.kick_player(name, "Player "..name.." suspected in dead cheat (maybe)")
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end, name)
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minetest.chat_send_all("Player "..name.." suspected in dead cheat (maybe) "..minimal_anticheat.count_engine[name]);
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end
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end
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elseif 1 then
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--nothing
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end
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if minimal_anticheat.count_engine[name] == nil then
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minimal_anticheat.count_engine[name] = 1
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else
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minimal_anticheat.count_engine[name] = minimal_anticheat.count_engine[name] + 1
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end
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end
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end
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minetest.register_on_cheat(minimal_anticheat.check_cheater_by_engine)
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