117 lines
2.9 KiB
Lua
117 lines
2.9 KiB
Lua
local load_time_start = os.clock()
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local function pos_allowed(pos, maxlight)
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local light = minetest.get_node_light(pos, 0.5)
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if not light
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or light > maxlight then
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return false
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end
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if minetest.get_node(pos).name ~= "air" then
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return false
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end
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for i = -1,1,2 do
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for _,p2 in pairs({
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{x=pos.x+i, y=pos.y, z=pos.z},
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{x=pos.x, y=pos.y+i, z=pos.z},
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{x=pos.x, y=pos.y, z=pos.z+i},
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}) do
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if minetest.get_node(p2).name ~= "air" then
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return true
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end
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end
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end
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return false
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end
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local function get_ps(pos, maxlight, max)
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local tab = {pos}
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local todo = {pos}
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local num = 2
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local tab_avoid = {[pos.x.." "..pos.y.." "..pos.z] = true}
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while todo[1] do
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for n,p in pairs(todo) do
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for i = -1,1 do
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for j = -1,1 do
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for k = -1,1 do
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local p2 = {x=p.x+i, y=p.y+j, z=p.z+k}
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local pstr = p2.x.." "..p2.y.." "..p2.z
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if not tab_avoid[pstr]
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and pos_allowed(pos, maxlight) then
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minetest.chat_send_all("It big.")
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tab[num] = p2
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tab_avoid[pstr] = true
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num = num+1
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table.insert(todo, p2)
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if max
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and num > max then
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return false
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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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todo[n] = nil
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end
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end
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return tab
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end
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local function place_torches(pos, maxlight, player, name)
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local ps = get_ps(pos, maxlight, 2000)
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if not ps then
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minetest.chat_send_player(name, "It doesn't seem to be dark there or the cave is too big.")
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return
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end
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while next(ps) do
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for n,pos in pairs(ps) do
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local light = minetest.get_node_light(pos, 0.5)
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if light <= maxlight then
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minetest.set_node(pos, {name = "default:torch"})
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minetest.chat_send_player(name, "Torch placed.")
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end
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ps[n] = nil
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end
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end
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end
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local function light_cave(player, name, maxlight)
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local pos = player:getpos()
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pos.y = pos.y+1.625
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pos = vector.round(pos)
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local dir = player:get_look_dir()
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local bl, pos2 = minetest.line_of_sight(pos, vector.round(vector.multiply(dir, 20)), 1)
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if bl then
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minetest.chat_send_player(name, "Could not find a node you look at.")
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return
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end
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pos = vector.round(vector.subtract(pos2, dir))
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if minetest.get_node(pos).name ~= "air" then
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minetest.chat_send_player(name, "Something went wrong.")
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return
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end
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place_torches(pos, maxlight, player, name)
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minetest.chat_send_player(name, "Successfully lit a cave.")
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end
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minetest.register_chatcommand("light_cave",{
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description = "light a cave",
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params = "[maxlight]",
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privs = {give = true},
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func = function(name, param)
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local player = minetest.get_player_by_name(name)
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local maxlight = tonumber(param) or 10
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if not player then
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return false, "Player not found"
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end
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light_cave(player, name, maxlight)
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end
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})
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local time = math.floor(tonumber(os.clock()-load_time_start)*100+0.5)/100
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local msg = "[cave_lighting] loaded after ca. "..time
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if time > 0.05 then
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print(msg)
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else
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minetest.log("info", msg)
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end
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