forked from VoxeLibre/VoxeLibre
remove mcl_anticheat
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@ -1,173 +0,0 @@
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local flights_kick_threshold = 10
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local suffocations_kick_threshold = 1
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local after = minetest.after
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local get_connected_players = minetest.get_connected_players
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local get_node = minetest.get_node
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local get_objects_inside_radius = minetest.get_objects_inside_radius
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local get_player_by_name = minetest.get_player_by_name
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local kick_player = minetest.kick_player
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local set_node = minetest.set_node
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local ceil = math.ceil
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local floor = math.floor
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local distance = vector.distance
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local window_size = 10
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local detection_interval = 1.7
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local step_seconds = detection_interval / window_size
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local joined_players = {}
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local function update_player(player_object)
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if not player_object then return end
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local name = player_object:get_player_name()
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if not name then return end
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local pos = player_object:get_pos()
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local x, y, z = floor(pos.x), floor(pos.y-0.1), floor(pos.z)
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if mcl_playerplus.elytra then
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local elytra = mcl_playerplus.elytra[player_object]
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if elytra and elytra.active then
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return
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end
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end
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local air = get_node({x = x , y = y , z = z }).name == "air"
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and get_node({x = x , y = y , z = z + 1}).name == "air"
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and get_node({x = x , y = y + 1, z = z }).name == "air"
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and get_node({x = x , y = y + 1, z = z + 1}).name == "air"
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and get_node({x = x + 1, y = y , z = z }).name == "air"
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and get_node({x = x + 1, y = y , z = z + 1}).name == "air"
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and get_node({x = x + 1, y = y + 1, z = z }).name == "air"
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and get_node({x = x + 1, y = y + 1, z = z + 1}).name == "air"
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local player_data = {
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pos = pos,
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velocity = player_object:get_velocity(),
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air = air
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}
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if joined_players[name] then
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local window_offset = (joined_players[name].window_offset + 1) % window_size
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joined_players[name].window_offset = window_offset
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joined_players[name][window_offset] = player_data
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else
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joined_players[name] = {
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window_offset = 0,
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[0] = player_data,
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}
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end
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end
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local function check_player(name)
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if minetest.is_creative_enabled(name) then return end
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local data = joined_players[name]
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if not data then return end
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if not data[0] then return end
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local always_air = true
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local falling = data[0].velocity.y < 0
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for i = 0, window_size - 1 do
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local derivative = data[i]
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local not_enough_data = not derivative
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if not_enough_data then
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return
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end
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always_air = always_air and derivative.air
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falling = falling or derivative.velocity.y < 0
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end
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if always_air and not falling then
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-- fly detected
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if not data.flights then
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data.flights = 1
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else
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data.flights = data.flights + 1
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if data.flights >= flights_kick_threshold then
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kick_player(name, "flights")
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end
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end
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local obj_player = minetest.get_player_by_name(name)
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if not obj_player then
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kick_player(name, "flights")
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end
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local velocity = obj_player:get_velocity()
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local pos = obj_player:get_pos()
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local x, y, z = floor(pos.x), floor(pos.y), floor(pos.z)
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while ( get_node({x = x , y = y, z = z }).name == "air"
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and get_node({x = x , y = y, z = z + 1}).name == "air"
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and get_node({x = x + 1, y = y, z = z }).name == "air"
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and get_node({x = x + 1, y = y, z = z + 1}).name == "air"
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) do
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y = y - 1
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end
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obj_player:set_velocity({x = velocity.x, y = -10, z = velocity.z})
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obj_player:set_pos({x = x, y = y + 0.5, z = z})
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end
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end
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local function remove_player(player_object)
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if not player_object then return end
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local name = player_object:get_player_name()
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if not name then return end
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minetest.after(step_seconds, function()
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joined_players[name] = nil
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end)
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end
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local function step()
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for _, player in pairs(get_connected_players()) do
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update_player(player)
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check_player(player:get_player_name())
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end
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after(step_seconds, step)
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end
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minetest.register_on_placenode(function(pos, newnode, placer, oldnode, itemstack, pointed_thing)
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if not oldnode then return end
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if not placer then return end
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if oldnode.name ~= "air" then return end
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if not placer:is_player() then return end
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local placer_pos = placer:get_pos()
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local placer_distance = distance(pos, placer_pos)
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if placer_distance < 13 then return end
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local is_choker = false
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for _, object in pairs(get_objects_inside_radius(pos, 2)) do
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if object and object:is_player() then
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local player_head_pos = object:get_pos()
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player_head_pos.y = player_head_pos.y + 1.5
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local player_head_distance = distance(pos, player_head_pos)
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if player_head_distance < 0.7 then
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after(0.05, function(node)
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set_node(pos, node)
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end, oldnode)
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is_choker = true
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break
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end
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end
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end
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if not is_choker then return end
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-- cheater choked the player from distance greater than 12:
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local name = placer:get_player_name()
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local data = joined_players[name]
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if not data then
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joined_players[name].suffocations = 1
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data = joined_players[name]
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else
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if not data.suffocations then
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data.suffocations = 1
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else
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data.suffocations = data.suffocations + 1
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end
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end
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if data.suffocations >= suffocations_kick_threshold then
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kick_player(name, "choker")
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end
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end)
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minetest.register_on_joinplayer(update_player)
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minetest.register_on_leaveplayer(remove_player)
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after(step_seconds, step)
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