forked from VoxeLibre/VoxeLibre
419 lines
11 KiB
Lua
419 lines
11 KiB
Lua
-- Parameters
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local TCAVE = 0.6
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local nobj_cave = nil
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-- 3D noise
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local np_cave = {
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offset = 0,
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scale = 1,
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spread = {x = 384, y = 128, z = 384},
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seed = 59033,
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octaves = 5,
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persist = 0.7
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}
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-- Destroy portal if pos (portal frame or portal node) got destroyed
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local destroy_portal = function(pos)
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-- Deactivate Nether portal
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local meta = minetest.get_meta(pos)
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local p1 = minetest.string_to_pos(meta:get_string("p1"))
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local p2 = minetest.string_to_pos(meta:get_string("p2"))
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if not p1 or not p2 then
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return
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end
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local first = true
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-- p1 metadata of first node
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local mp1
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for x = p1.x, p2.x do
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for y = p1.y, p2.y do
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for z = p1.z, p2.z do
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local p = vector.new(x, y, z)
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local m = minetest.get_meta(p)
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if first then
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--[[ Only proceed if the first node still has metadata.
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If it doesn't have metadata, another node propably triggred the delection
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routine earlier, so we bail out earlier to avoid an infinite cascade
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of on_destroy events. ]]
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mp1 = minetest.string_to_pos(m:get_string("p1"))
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if not mp1 then
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return
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end
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end
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local nn = minetest.get_node(p).name
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if nn == "mcl_core:obsidian" or nn == "mcl_portals:portal" then
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-- Remove portal nodes, but not myself
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if nn == "mcl_portals:portal" and not vector.equals(p, pos) then
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minetest.remove_node(p)
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end
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-- Clear metadata of portal nodes and the frame
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m:set_string("p1", "")
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m:set_string("p2", "")
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m:set_string("target", "")
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end
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first = 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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minetest.register_node("mcl_portals:portal", {
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description = "Nether Portal",
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tiles = {
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"blank.png",
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"blank.png",
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"blank.png",
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"blank.png",
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{
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name = "mcl_portals_portal.png",
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animation = {
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type = "vertical_frames",
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aspect_w = 16,
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aspect_h = 16,
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length = 0.5,
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},
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},
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{
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name = "mcl_portals_portal.png",
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animation = {
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type = "vertical_frames",
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aspect_w = 16,
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aspect_h = 16,
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length = 0.5,
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},
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},
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},
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drawtype = "nodebox",
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paramtype = "light",
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paramtype2 = "facedir",
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sunlight_propagates = true,
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use_texture_alpha = true,
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walkable = false,
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diggable = false,
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pointable = false,
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buildable_to = false,
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is_ground_content = false,
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drop = "",
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light_source = 11,
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post_effect_color = {a = 180, r = 128, g = 23, b = 23},
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alpha = 192,
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node_box = {
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type = "fixed",
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fixed = {
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{-0.5, -0.5, -0.1, 0.5, 0.5, 0.1},
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},
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},
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groups = {not_in_creative_inventory = 1},
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on_destruct = destroy_portal,
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_mcl_hardness = -1,
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_mcl_blast_resistance = 0,
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})
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-- Functions
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--Build arrival portal
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local function build_portal(pos, target)
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local p = {x = pos.x - 1, y = pos.y - 1, z = pos.z}
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local p1 = {x = pos.x - 1, y = pos.y - 1, z = pos.z}
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local p2 = {x = p1.x + 3, y = p1.y + 4, z = p1.z}
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for i = 1, 4 do
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minetest.set_node(p, {name = "mcl_core:obsidian"})
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p.y = p.y + 1
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end
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for i = 1, 3 do
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minetest.set_node(p, {name = "mcl_core:obsidian"})
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p.x = p.x + 1
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end
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for i = 1, 4 do
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minetest.set_node(p, {name = "mcl_core:obsidian"})
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p.y = p.y - 1
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end
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for i = 1, 3 do
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minetest.set_node(p, {name = "mcl_core:obsidian"})
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p.x = p.x - 1
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end
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for x = p1.x, p2.x do
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for y = p1.y, p2.y do
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p = {x = x, y = y, z = p1.z}
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if not (x == p1.x or x == p2.x or y == p1.y or y == p2.y) then
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minetest.set_node(p, {name = "mcl_portals:portal", param2 = 0})
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end
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local meta = minetest.get_meta(p)
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meta:set_string("p1", minetest.pos_to_string(p1))
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meta:set_string("p2", minetest.pos_to_string(p2))
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meta:set_string("target", minetest.pos_to_string(target))
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if y ~= p1.y then
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for z = -2, 2 do
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if z ~= 0 then
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p.z = p.z + z
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if minetest.registered_nodes[
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minetest.get_node(p).name].is_ground_content then
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minetest.remove_node(p)
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end
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p.z = p.z - z
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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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end
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local function find_nether_target_y(target_x, target_z)
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local start_y = mcl_vars.mg_nether_min + math.random(38, 117) -- Search start
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if not nobj_cave then
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nobj_cave = minetest.get_perlin(np_cave)
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end
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local air = 4
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for y = start_y, start_y -117, -1 do
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local nval_cave = nobj_cave:get3d({x = target_x, y = y, z = target_z})
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if nval_cave > TCAVE then -- Cavern
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air = air + 1
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else -- Not cavern, check if 4 nodes of space above
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if air >= 4 then
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return y + 2
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else -- Not enough space, reset air to zero
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air = 0
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end
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end
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end
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return start_y -- Fallback
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end
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local function move_check(p1, max, dir)
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local p = {x = p1.x, y = p1.y, z = p1.z}
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local d = math.abs(max - p1[dir]) / (max - p1[dir])
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while p[dir] ~= max do
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p[dir] = p[dir] + d
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if minetest.get_node(p).name ~= "mcl_core:obsidian" then
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return false
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end
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end
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return true
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end
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local function check_portal(p1, p2)
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if p1.x ~= p2.x then
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if not move_check(p1, p2.x, "x") then
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return false
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end
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if not move_check(p2, p1.x, "x") then
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return false
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end
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elseif p1.z ~= p2.z then
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if not move_check(p1, p2.z, "z") then
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return false
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end
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if not move_check(p2, p1.z, "z") then
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return false
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end
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else
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return false
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end
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if not move_check(p1, p2.y, "y") then
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return false
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end
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if not move_check(p2, p1.y, "y") then
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return false
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end
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return true
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end
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local function is_portal(pos)
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for d = -3, 3 do
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for y = -4, 4 do
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local px = {x = pos.x + d, y = pos.y + y, z = pos.z}
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local pz = {x = pos.x, y = pos.y + y, z = pos.z + d}
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if check_portal(px, {x = px.x + 3, y = px.y + 4, z = px.z}) then
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return px, {x = px.x + 3, y = px.y + 4, z = px.z}
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end
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if check_portal(pz, {x = pz.x, y = pz.y + 4, z = pz.z + 3}) then
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return pz, {x = pz.x, y = pz.y + 4, z = pz.z + 3}
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end
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end
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end
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end
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local function make_portal(pos)
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local p1, p2 = is_portal(pos)
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if not p1 or not p2 then
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return false
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end
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for d = 1, 2 do
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for y = p1.y + 1, p2.y - 1 do
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local p
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if p1.z == p2.z then
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p = {x = p1.x + d, y = y, z = p1.z}
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else
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p = {x = p1.x, y = y, z = p1.z + d}
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end
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if minetest.get_node(p).name ~= "air" 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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local param2
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if p1.z == p2.z then
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param2 = 0
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else
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param2 = 1
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end
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local target = {x = p1.x, y = p1.y, z = p1.z}
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target.x = target.x + 1
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if target.y < mcl_vars.mg_nether_max and target.y > mcl_vars.mg_nether_min then
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target.y = math.random(mcl_vars.mg_overworld_min + 40, mcl_vars.mg_overworld_min + 96)
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else
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target.y = find_nether_target_y(target.x, target.z)
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end
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for d = 0, 3 do
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for y = p1.y, p2.y do
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local p = {}
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if param2 == 0 then
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p = {x = p1.x + d, y = y, z = p1.z}
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else
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p = {x = p1.x, y = y, z = p1.z + d}
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end
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if minetest.get_node(p).name == "air"
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then
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minetest.set_node(p, {name = "mcl_portals:portal", param2 = param2})
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end
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local meta = minetest.get_meta(p)
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meta:set_string("p1", minetest.pos_to_string(p1))
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meta:set_string("p2", minetest.pos_to_string(p2))
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meta:set_string("target", minetest.pos_to_string(target))
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end
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end
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return true
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end
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minetest.register_abm({
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label = "Nether portal teleportation and particles",
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nodenames = {"mcl_portals:portal"},
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interval = 1,
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chance = 2,
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action = function(pos, node)
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minetest.add_particlespawner(
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32, --amount
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4, --time
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{x = pos.x - 0.25, y = pos.y - 0.25, z = pos.z - 0.25}, --minpos
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{x = pos.x + 0.25, y = pos.y + 0.25, z = pos.z + 0.25}, --maxpos
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{x = -0.8, y = -0.8, z = -0.8}, --minvel
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{x = 0.8, y = 0.8, z = 0.8}, --maxvel
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{x = 0, y = 0, z = 0}, --minacc
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{x = 0, y = 0, z = 0}, --maxacc
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0.5, --minexptime
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1, --maxexptime
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1, --minsize
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2, --maxsize
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false, --collisiondetection
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"mcl_portals_particle.png" --texture
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)
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for _,obj in ipairs(minetest.get_objects_inside_radius(pos,1)) do --maikerumine added for objects to travel
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local lua_entity = obj:get_luaentity() --maikerumine added for objects to travel
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if obj:is_player() or lua_entity then
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local meta = minetest.get_meta(pos)
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local target = minetest.string_to_pos(meta:get_string("target"))
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if target then
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-- force emerge of target area
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minetest.get_voxel_manip():read_from_map(target, target)
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if not minetest.get_node_or_nil(target) then
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minetest.emerge_area(
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vector.subtract(target, 4), vector.add(target, 4))
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end
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-- teleport the player
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minetest.after(3, function(obj, pos, target)
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local objpos = obj:getpos() if objpos == nil then return end --maikerumine added for objects to travel
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if minetest.get_node(objpos).name ~= "mcl_portals:portal" then
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return
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end
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-- Build target portal
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local function check_and_build_portal(pos, target)
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local n = minetest.get_node_or_nil(target)
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if n and n.name ~= "mcl_portals:portal" then
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build_portal(target, pos)
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minetest.after(2, check_and_build_portal, pos, target)
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elseif not n then
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minetest.after(1, check_and_build_portal, pos, target)
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end
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end
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check_and_build_portal(pos, target)
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-- Teleport
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obj:setpos(target)
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minetest.sound_play("mcl_portals_teleport", {pos=target, gain=0.5, max_hear_distance = 16})
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end, obj, pos, target)
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end
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end
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end
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end,
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})
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--[[ ITEM OVERRIDES ]]
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-- Frame material
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minetest.override_item("mcl_core:obsidian", {
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on_destruct = destroy_portal,
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})
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-- Portal opener
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minetest.override_item("mcl_fire:flint_and_steel", {
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_doc_items_longdesc = "Flint and steel is a tool to start fires, ignite blocks and open portals.",
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_doc_items_usagehelp = "Rightclick the surface of a block to attempt to light a fire in front of it. On netherrack it will start an eternal fire. Using it on TNT will ignite it. To open a Nether portal, place an upright frame of obsidian with a length of 4 and a height of 5 blocks, leaving only air in the center. After placing this frame, use the flint and steel on inside of the frame.",
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on_place = function(itemstack, user, pointed_thing)
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local idef = itemstack:get_definition()
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minetest.sound_play(
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"fire_flint_and_steel",
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{pos = pointed_thing.above, gain = 0.5, max_hear_distance = 8}
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)
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local used = false
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if pointed_thing.under and minetest.get_node(pointed_thing.under).name == "mcl_core:obsidian" then
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make_portal(pointed_thing.under)
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if minetest.get_modpath("doc") then
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doc.mark_entry_as_revealed(user:get_player_name(), "nodes", "mcl_portals:portal")
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end
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else
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if pointed_thing.type == "node" then
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local nodedef = minetest.registered_nodes[minetest.get_node(pointed_thing.under).name]
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if nodedef._on_ignite then
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nodedef._on_ignite(pointed_thing.under, user)
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else
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mcl_fire.set_fire(pointed_thing)
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end
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used = true
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end
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end
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if itemstack:get_count() == 0 and idef.sound and idef.sound.breaks then
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minetest.sound_play(idef.sound.breaks, {pos=user:getpos(), gain=0.5})
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end
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if not minetest.setting_getbool("creative_mode") and used == true then
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itemstack:add_wear(65535/65) -- 65 uses
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end
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return itemstack
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end,
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})
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