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check for portal frames on the surface
When a surface level was known, only the volume_is_natural check was being performed, this fixes that. Also fixes bug where LBM didn't start the timer of example portals that had been disabled. Allows portal ignite to repair a stopped timer. Other misc cleanup - paramat's new Floatlands won't have lakes so I removed that from the flavortext.
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Treer
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@ -1036,12 +1036,14 @@ local function ignite_portal(ignition_pos, ignition_node_name)
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local anchorPos, orientation, is_ignited = is_within_portal_frame(portal_definition, ignition_pos)
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if anchorPos == nil then
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if DEBUG then minetest.chat_send_all("No " .. portal_definition.name .. " portal frame found at " .. minetest.pos_to_string(ignition_pos)) end
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continue = true -- no portal is here, but perhaps there more than one portal type we need to search for
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continue = true -- no portal is here, but perhaps there's more than one portal type we need to search for
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elseif is_ignited then
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-- Found a portal, check its metadata and timer is healthy.
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local repair = false
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local meta = minetest.get_meta(ignition_pos)
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if meta ~= nil then
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if meta:get_string("p1") == "" then
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if meta ~= nil then
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local p1, p2, target = meta:get_string("p1"), meta:get_string("p2"), meta:get_string("target")
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if p1 == "" or p2 == "" or target == "" then
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-- metadata is missing, the portal frame node must have been removed without calling
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-- on_destruct - perhaps by an ABM, then replaced - presumably by a player.
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-- allowing reigniting will repair the portal
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@ -1049,9 +1051,19 @@ local function ignite_portal(ignition_pos, ignition_node_name)
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repair = true
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else
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if DEBUG then minetest.chat_send_all("This portal links to " .. meta:get_string("target") .. ". p1=" .. meta:get_string("p1") .. " p2=" .. meta:get_string("p2")) end
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-- Check the portal's timer is running, and fix if it's not.
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-- A portal's timer can stop running if the game is played without that portal type being
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-- registered, e.g. enabling one of the example portals then later disabling it, then enabling it again.
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-- (if this is a frequent problem, then change the value of "run_at_every_load" in the lbm)
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local timer = minetest.get_node_timer(get_timerPos_from_p1_and_p2(minetest.string_to_pos(p1), minetest.string_to_pos(p2)))
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if timer ~= nil and timer:get_timeout() == 0 then
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if DEBUG then minetest.chat_send_all("Portal timer was not running: restarting the timer.") end
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timer:start(1)
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end
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end
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end
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if not repair then return false end -- portal is already ignited
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if not repair then return false end -- portal is already ignited (or timer has been fixed)
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end
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if continue == false then
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@ -1508,13 +1520,14 @@ minetest.register_lbm({
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local meta = minetest.get_meta(pos)
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if meta ~= nil then
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p1 = minetest.string_to_pos(meta:get_string("p1"))
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p2 = minetest.string_to_pos(meta:get_string("p1"))
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p2 = minetest.string_to_pos(meta:get_string("p2"))
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end
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if p1 ~= nil and p2 ~= nil then
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local timerPos = get_timerPos_from_p1_and_p2(p1, p2)
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local timer = minetest.get_node_timer(timerPos)
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if timer ~= nil then
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timer:start(1)
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if DEBUG then minetest.chat_send_all("LBM started portal timer " .. minetest.pos_to_string(timerPos)) end
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elseif DEBUG then
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minetest.chat_send_all("get_node_timer" .. minetest.pos_to_string(timerPos) .. " returned null")
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end
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@ -1743,35 +1756,32 @@ end
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-- portal_name is optional, providing it allows existing portals on the surface to be reused.
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function nether.find_surface_target_y(target_x, target_z, portal_name)
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-- default to starting the search at -16 (probably underground) if we don't know the
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-- surface, like paramat's original code from before get_spawn_level() was available:
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-- https://github.com/minetest-mods/nether/issues/5#issuecomment-506983676
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local start_y = -16
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-- try to spawn on surface first
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if minetest.get_spawn_level ~= nil then -- older versions of Minetest don't have this
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local surface_level = minetest.get_spawn_level(target_x, target_z)
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if surface_level ~= nil then
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surface_level = minetest.get_spawn_level(target_x, target_z)
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if surface_level ~= nil then -- test this since get_spawn_level() can return nil over water or steep/high terrain
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-- get_spawn_level() tends to err on the side of caution and sometimes spawn the player a
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-- get_spawn_level() tends to err on the side of caution and spawns the player a
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-- block higher than the ground level. The implementation is mapgen specific
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-- and -2 seems to be the right amount for v6, v5, carpathian, valleys, and flat,
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-- and -2 seems to be the right correction for v6, v5, carpathian, valleys, and flat,
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-- but v7 only needs -1.
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-- Perhaps this was not always the case, and -2 may be too much in older versions
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-- of minetest, but half-buried portals are perferable to floating ones, and they
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-- will clear a suitable hole around them.
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-- will clear a suitable hole around themselves.
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if minetest.get_mapgen_setting("mg_name") == "v7" then
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surface_level = surface_level - 1
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else
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surface_level = surface_level - 2
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end
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-- Check volume for non-natural nodes
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local minp = {x = target_x - 1, y = surface_level - 1, z = target_z - 2}
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local maxp = {x = target_x + 2, y = surface_level + 3, z = target_z + 2}
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if nether.volume_is_natural(minp, maxp) then
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return surface_level
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end
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start_y = surface_level
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end
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end
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-- fallback to underground search
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local start_y = -16
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for y = start_y, start_y - 256, -16 do
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-- Check volume for non-natural nodes
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local minp = {x = target_x - 1, y = y - 1, z = target_z - 2}
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@ -1783,6 +1793,7 @@ function nether.find_surface_target_y(target_x, target_z, portal_name)
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-- but reigniting existing portals in portal rooms is fine - desirable even.
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local anchorPos, orientation, is_ignited = is_within_portal_frame(nether.registered_portals[portal_name], {x = target_x, y = y, z = target_z})
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if anchorPos ~= nil then
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if DEBUG then minetest.chat_send_all("Volume_is_natural check failed, but a portal frame is here " .. minetest.pos_to_string(anchorPos) .. ", so this is still a good target y level") end
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return y
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end
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end
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@ -44,7 +44,7 @@ local SURFACE_TRAVEL_DISTANCE = 26
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local FLOATLANDS_ENABLED = false
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local FLOATLAND_LEVEL = 1280
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if minetest.settings:get_bool("nether_enable_portal_example_floatlands", ENABLE_PORTAL_EXAMPLE_FLOATLANDS) then
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if minetest.settings:get_bool("nether_enable_portal_example_floatlands", ENABLE_PORTAL_EXAMPLE_FLOATLANDS) then
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local floatlands_flavortext = ""
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if minetest.get_mapgen_setting("mg_name") == "v7" then
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@ -53,7 +53,7 @@ if minetest.settings:get_bool("nether_enable_portal_example_floatlands", ENABLE
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FLOATLAND_LEVEL = minetest.get_mapgen_setting("mgv7_floatland_level") or 1280
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if FLOATLANDS_ENABLED then
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floatlands_flavortext = "There is a floating land of hills and lakes and forests up there, the edges of which lead to a drop all the way back down to the surface. We have not found how far these strange lands extend. One day I may retire here."
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floatlands_flavortext = S("There is a floating land of hills and forests up there, over the edges of which is a perilous drop all the way back down to sea level. We have not found how far these strange pristine lands extend. I have half a mind to retire there one day.")
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end
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end
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@ -122,7 +122,7 @@ end
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local get_moore_distance -- will be function get_moore_distance(cell_count, x, y): integer
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local get_moore_coords -- will be function get_moore_coords(cell_count, distance): pos2d
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if minetest.settings:get_bool("nether_enable_portal_example_surfacetravel", ENABLE_PORTAL_EXAMPLE_SURFACETRAVEL) then
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if minetest.settings:get_bool("nether_enable_portal_example_surfacetravel", ENABLE_PORTAL_EXAMPLE_SURFACETRAVEL) then
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nether.register_portal("surface_portal", {
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shape = nether.PortalShape_Circular,
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@ -202,10 +202,8 @@ if minetest.settings:get_bool("nether_enable_portal_example_surfacetravel", ENA
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for attempt = 1, attemptLimit do
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adj_x = math.floor(prng:rand_normal_dist(-search_radius, search_radius, 2) + 0.5)
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adj_z = math.floor(prng:rand_normal_dist(-search_radius, search_radius, 2) + 0.5)
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minetest.chat_send_all(attempt .. ": x " .. target_x + adj_x .. ", z " .. target_z + adj_z)
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if minetest.get_spawn_level(target_x + adj_x, target_z + adj_z) ~= nil then
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-- found a location which will be at ground level (unless a player has built there)
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minetest.chat_send_all("x " .. target_x + adj_x .. ", z " .. target_z + adj_z .. " is suitable. Within " .. search_radius .. " of " .. target_x .. ", " .. target_z)
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break
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end
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end
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