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VoxeLibre/mods/MAPGEN/mcl_portals/portal_end.lua

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-- Parameters
local END_DEPTH = mcl_vars.mg_end_min
local TCAVE = 0.6
local nobj_cave = nil
-- 3D noise
local np_cave = {
offset = 0,
scale = 1,
spread = {x = 384, y = 128, z = 384}, -- squashed 3:1
seed = 59033,
octaves = 5,
persist = 0.7
}
-- Nodes
minetest.register_node("mcl_portals:portal_end", {
description = "End Portal",
tiles = {
"blank.png",
"blank.png",
"blank.png",
"blank.png",
{
name = "mcl_portals_end_portal.png",
animation = {
type = "vertical_frames",
aspect_w = 16,
aspect_h = 16,
length = 2.0,
},
},
{
name = "mcl_portals_end_portal.png",
animation = {
type = "vertical_frames",
aspect_w = 16,
aspect_h = 16,
length = 2.0,
},
},
},
drawtype = "nodebox",
paramtype = "light",
paramtype2 = "facedir",
sunlight_propagates = true,
use_texture_alpha = true,
walkable = false,
diggable = false,
pointable = false,
buildable_to = false,
is_ground_content = false,
drop = "",
-- This is 15 in MC.
light_source = 14,
post_effect_color = {a = 192, r = 0, g = 0, b = 0},
alpha = 192,
node_box = {
type = "fixed",
fixed = {
{-0.5, -0.5, -0.1, 0.5, 0.5, 0.1},
},
},
groups = {not_in_creative_inventory = 1}
})
local function build_end_portal(pos, target3)
local p = {x = pos.x - 1, y = pos.y - 1, z = pos.z}
local p1 = {x = pos.x - 1, y = pos.y - 1, z = pos.z}
local p2 = {x = p1.x + 3, y = p1.y + 4, z = p1.z}
for i = 1, 4 do
minetest.set_node(p, {name = "mcl_nether:red_nether_brick"})
p.y = p.y + 1
end
for i = 1, 3 do
minetest.set_node(p, {name = "mcl_nether:red_nether_brick"})
p.x = p.x + 1
end
for i = 1, 4 do
minetest.set_node(p, {name = "mcl_nether:red_nether_brick"})
p.y = p.y - 1
end
for i = 1, 3 do
minetest.set_node(p, {name = "mcl_nether:red_nether_brick"})
p.x = p.x - 1
end
for x = p1.x, p2.x do
for y = p1.y, p2.y do
p = {x = x, y = y, z = p1.z}
if not (x == p1.x or x == p2.x or y == p1.y or y == p2.y) then
minetest.set_node(p, {name = "mcl_portals:portal_end", param2 = 0})
end
local meta = minetest.get_meta(p)
meta:set_string("p1", minetest.pos_to_string(p1))
meta:set_string("p2", minetest.pos_to_string(p2))
meta:set_string("target3", minetest.pos_to_string(target3))
if y ~= p1.y then
for z = -2, 2 do
if z ~= 0 then
p.z = p.z + z
if minetest.registered_nodes[
minetest.get_node(p).name].is_ground_content then
minetest.remove_node(p)
end
p.z = p.z - z
end
end
end
end
end
end
local function find_end_target3_y2(target3_x, target3_z)
local start_y = END_DEPTH + math.random(20, 120) -- Search start
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if not nobj_cave then
nobj_cave = minetest.get_perlin(np_cave)
end
local air = 0 -- Consecutive air nodes found
for y = start_y, start_y - 120, -1 do
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local nval_cave = nobj_cave:get3d({x = target3_x, y = y, z = target3_z})
if nval_cave > TCAVE then -- Cavern
air = air + 1
else -- Not cavern, check if 4 nodes of space above
if air >= 4 then
return y + 2
else -- Not enough space, reset air to zero
air = 0
end
end
end
return start_y -- Fallback
end
local function move_check2(p1, max, dir)
local p = {x = p1.x, y = p1.y, z = p1.z}
local d = math.abs(max - p1[dir]) / (max - p1[dir])
while p[dir] ~= max do
p[dir] = p[dir] + d
if minetest.get_node(p).name ~= "mcl_nether:red_nether_brick" then
return false
end
end
return true
end
local function check_end_portal(p1, p2)
if p1.x ~= p2.x then
if not move_check2(p1, p2.x, "x") then
return false
end
if not move_check2(p2, p1.x, "x") then
return false
end
elseif p1.z ~= p2.z then
if not move_check2(p1, p2.z, "z") then
return false
end
if not move_check2(p2, p1.z, "z") then
return false
end
else
return false
end
if not move_check2(p1, p2.y, "y") then
return false
end
if not move_check2(p2, p1.y, "y") then
return false
end
return true
end
local function is_end_portal(pos)
for d = -3, 3 do
for y = -4, 4 do
local px = {x = pos.x + d, y = pos.y + y, z = pos.z}
local pz = {x = pos.x, y = pos.y + y, z = pos.z + d}
if check_end_portal(px, {x = px.x + 3, y = px.y + 4, z = px.z}) then
return px, {x = px.x + 3, y = px.y + 4, z = px.z}
end
if check_end_portal(pz, {x = pz.x, y = pz.y + 4, z = pz.z + 3}) then
return pz, {x = pz.x, y = pz.y + 4, z = pz.z + 3}
end
end
end
end
local function make_end_portal(pos)
local p1, p2 = is_end_portal(pos)
if not p1 or not p2 then
return false
end
for d = 1, 2 do
for y = p1.y + 1, p2.y - 1 do
local p
if p1.z == p2.z then
p = {x = p1.x + d, y = y, z = p1.z}
else
p = {x = p1.x, y = y, z = p1.z + d}
end
if minetest.get_node(p).name ~= "air" then
return false
end
end
end
local param2
if p1.z == p2.z then
param2 = 0
else
param2 = 1
end
local target3 = {x = p1.x, y = p1.y, z = p1.z}
target3.x = target3.x + 1
if target3.y < END_DEPTH then
target3.y = math.random(-52, 100)
else
target3.y = find_end_target3_y2(target3.x, target3.z)
end
for d = 0, 3 do
for y = p1.y, p2.y do
local p = {}
if param2 == 0 then
p = {x = p1.x + d, y = y, z = p1.z}
else
p = {x = p1.x, y = y, z = p1.z + d}
end
if minetest.get_node(p).name == "air" then
minetest.set_node(p, {name = "mcl_portals:portal_end", param2 = param2})
end
local meta = minetest.get_meta(p)
meta:set_string("p1", minetest.pos_to_string(p1))
meta:set_string("p2", minetest.pos_to_string(p2))
meta:set_string("target3", minetest.pos_to_string(target3))
end
end
return true
end
minetest.register_abm({
label = "End portal teleportation",
nodenames = {"mcl_portals:portal_end"},
interval = 1,
chance = 2,
action = function(pos, node)
for _,obj in ipairs(minetest.get_objects_inside_radius(pos,1)) do --maikerumine added for objects to travel
local lua_entity = obj:get_luaentity() --maikerumine added for objects to travel
if obj:is_player() or lua_entity then
local meta = minetest.get_meta(pos)
local target3 = minetest.string_to_pos(meta:get_string("target3"))
if target3 then
-- force emerge of target3 area
minetest.get_voxel_manip():read_from_map(target3, target3)
if not minetest.get_node_or_nil(target3) then
minetest.emerge_area(
vector.subtract(target3, 4), vector.add(target3, 4))
end
-- teleport the player
minetest.after(3, function(obj, pos, target3)
local objpos = obj:getpos()
if objpos == nil then return end --maikerumine added for objects to travel
objpos.y = objpos.y + 0.1 -- Fix some glitches at -8000. FIXME: WTF?
if minetest.get_node(objpos).name ~= "mcl_portals:portal_end" then
return
end
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-- Build destination
local function check_and_build_end_portal(pos, target3)
local n = minetest.get_node_or_nil(target3)
if n and n.name ~= "mcl_portals:portal_end" then
build_end_portal(target3, pos)
minetest.after(2, check_and_build_end_portal, pos, target3)
minetest.after(4, check_and_build_end_portal, pos, target3)
elseif not n then
minetest.after(1, check_and_build_end_portal, pos, target3)
end
end
minetest.after(1, check_and_build_end_portal, pos, target3)
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-- Teleport
obj:setpos(target3)
minetest.sound_play("mcl_portals_teleport", {pos=target3, gain=0.5, max_hear_distance = 16})
end, obj, pos, target3)
end
end
end
end,
})
--[[ ITEM OVERRIDES ]]
-- Frame material
minetest.override_item("mcl_nether:red_nether_brick", {
on_destruct = function(pos)
local meta = minetest.get_meta(pos)
local p1 = minetest.string_to_pos(meta:get_string("p1"))
local p2 = minetest.string_to_pos(meta:get_string("p2"))
local target3 = minetest.string_to_pos(meta:get_string("target3"))
if not p1 or not p2 then
return
end
for x = p1.x, p2.x do
for y = p1.y, p2.y do
for z = p1.z, p2.z do
local nn = minetest.get_node({x = x, y = y, z = z}).name
if nn == "mcl_nether:red_nether_brick" or nn == "mcl_portals:portal_end" then
if nn == "mcl_portals:portal_end" then
minetest.remove_node({x = x, y = y, z = z})
end
local m = minetest.get_meta({x = x, y = y, z = z})
m:set_string("p1", "")
m:set_string("p2", "")
m:set_string("target3", "")
end
end
end
end
meta = minetest.get_meta(target3)
if not meta then
return
end
p1 = minetest.string_to_pos(meta:get_string("p1"))
p2 = minetest.string_to_pos(meta:get_string("p2"))
if not p1 or not p2 then
return
end
for x = p1.x, p2.x do
for y = p1.y, p2.y do
for z = p1.z, p2.z do
local nn = minetest.get_node({x = x, y = y, z = z}).name
if nn == "mcl_nether:red_nether_brick" or nn == "mcl_portals:portal_end" then
if nn == "mcl_portals:portal_end" then
minetest.remove_node({x = x, y = y, z = z})
end
local m = minetest.get_meta({x = x, y = y, z = z})
m:set_string("p1", "")
m:set_string("p2", "")
m:set_string("target3", "")
end
end
end
end
end,
})
-- Portal opener
minetest.override_item("mcl_end:ender_eye", {
_doc_items_longdesc = "An eye of ander can be used to open a portal to the End.",
_doc_items_usagehelp = "To open an End portal, place an upright frame of red nether brick blocks with a length of 4 and a height of 5 blocks, leaving only air in the center. After placing this frame, use the nether quartz on the frame.",
on_place = function(itemstack, user, pointed_thing)
local nodedef = minetest.registered_nodes[minetest.get_node(pointed_thing.under).name] --new
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-- If used on frame, open portal
if pointed_thing.under and minetest.get_node(pointed_thing.under).name == "mcl_nether:red_nether_brick" then
make_end_portal(pointed_thing.under)
minetest.sound_play(
"fire_flint_and_steel",
{pos = pointed_thing.above, gain = 0.5, max_hear_distance = 8}
)
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if not minetest.setting_getbool("creative_mode") and used == true then
itemstack:take_item() -- 1 use
end
end
return itemstack
end,
})