nether/init.lua

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-- Minetest 0.4 Mod: Nether
local NETHER_DEPTH = -5000
minetest.register_node("nether:portal", {
description = "Nether Portal",
tiles = {
"nether_transparent.png",
"nether_transparent.png",
"nether_transparent.png",
"nether_transparent.png",
{
name = "nether_portal.png",
animation = {
type = "vertical_frames",
aspect_w = 16,
aspect_h = 16,
length = 0.5,
},
},
{
name = "nether_portal.png",
animation = {
type = "vertical_frames",
aspect_w = 16,
aspect_h = 16,
length = 0.5,
},
},
},
drawtype = "nodebox",
paramtype = "light",
paramtype2 = "facedir",
sunlight_propagates = true,
use_texture_alpha = true,
walkable = false,
digable = false,
pointable = false,
buildable_to = false,
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drop = "",
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light_source = 5,
post_effect_color = {a=180, r=128, g=0, b=128},
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_portal(pos, target)
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.env:set_node(p, {name="default:obsidian"})
p.y = p.y+1
end
for i=1,3 do
minetest.env:set_node(p, {name="default:obsidian"})
p.x = p.x+1
end
for i=1,4 do
minetest.env:set_node(p, {name="default:obsidian"})
p.y = p.y-1
end
for i=1,3 do
minetest.env:set_node(p, {name="default:obsidian"})
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.env:set_node(p, {name="nether:portal", param2=0})
end
local meta = minetest.env:get_meta(p)
meta:set_string("p1", minetest.pos_to_string(p1))
meta:set_string("p2", minetest.pos_to_string(p2))
meta:set_string("target", minetest.pos_to_string(target))
if y ~= p1.y then
for z=-2,2 do
if z ~= 0 then
p.z = p.z+z
if minetest.registered_nodes[minetest.env:get_node(p).name].is_ground_content then
minetest.env:remove_node(p)
end
p.z = p.z-z
end
end
end
end
end
end
minetest.register_abm({
nodenames = {"nether:portal"},
interval = 1,
chance = 2,
action = function(pos, node)
minetest.add_particlespawner(
32, --amount
4, --time
{x=pos.x-0.25, y=pos.y-0.25, z=pos.z-0.25}, --minpos
{x=pos.x+0.25, y=pos.y+0.25, z=pos.z+0.25}, --maxpos
{x=-0.8, y=-0.8, z=-0.8}, --minvel
{x=0.8, y=0.8, z=0.8}, --maxvel
{x=0,y=0,z=0}, --minacc
{x=0,y=0,z=0}, --maxacc
0.5, --minexptime
1, --maxexptime
1, --minsize
2, --maxsize
false, --collisiondetection
"nether_particle.png" --texture
)
for _,obj in ipairs(minetest.env:get_objects_inside_radius(pos, 1)) do
if obj:is_player() then
local meta = minetest.env:get_meta(pos)
local target = minetest.string_to_pos(meta:get_string("target"))
if target then
minetest.after(3, function(obj, pos, target)
local objpos = obj:getpos()
objpos.y = objpos.y+0.1 -- Fix some glitches at -8000
if minetest.env:get_node(objpos).name ~= "nether:portal" then
return
end
obj:setpos(target)
local function check_and_build_portal(pos, target)
local n = minetest.env:get_node_or_nil(target)
if n and n.name ~= "nether:portal" then
build_portal(target, pos)
minetest.after(2, check_and_build_portal, pos, target)
minetest.after(4, check_and_build_portal, pos, target)
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elseif not n then
minetest.after(1, check_and_build_portal, pos, target)
end
end
minetest.after(1, check_and_build_portal, pos, target)
end, obj, pos, target)
end
end
end
end,
})
local function move_check(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.env:get_node(p).name ~= "default:obsidian" then
return false
end
end
return true
end
local function check_portal(p1, p2)
if p1.x ~= p2.x then
if not move_check(p1, p2.x, "x") then
return false
end
if not move_check(p2, p1.x, "x") then
return false
end
elseif p1.z ~= p2.z then
if not move_check(p1, p2.z, "z") then
return false
end
if not move_check(p2, p1.z, "z") then
return false
end
else
return false
end
if not move_check(p1, p2.y, "y") then
return false
end
if not move_check(p2, p1.y, "y") then
return false
end
return true
end
local function is_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_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_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_portal(pos)
local p1, p2 = is_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.env: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 target = {x=p1.x, y=p1.y, z=p1.z}
target.x = target.x + 1
if target.y < NETHER_DEPTH then
target.y = math.random(-50, 20)
else
target.y = NETHER_DEPTH - math.random(500, 1500)
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.env:get_node(p).name == "air" then
minetest.env:set_node(p, {name="nether:portal", param2=param2})
end
local meta = minetest.env:get_meta(p)
meta:set_string("p1", minetest.pos_to_string(p1))
meta:set_string("p2", minetest.pos_to_string(p2))
meta:set_string("target", minetest.pos_to_string(target))
end
end
return true
end
minetest.register_node(":default:obsidian", {
description = "Obsidian",
tiles = {"default_obsidian.png"},
is_ground_content = true,
sounds = default.node_sound_stone_defaults(),
groups = {cracky=1,level=2},
on_destruct = function(pos)
local meta = minetest.env:get_meta(pos)
local p1 = minetest.string_to_pos(meta:get_string("p1"))
local p2 = minetest.string_to_pos(meta:get_string("p2"))
local target = minetest.string_to_pos(meta:get_string("target"))
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.env:get_node({x=x,y=y,z=z}).name
if nn == "default:obsidian" or nn == "nether:portal" then
if nn == "nether:portal" then
minetest.env:remove_node({x=x,y=y,z=z})
end
local m = minetest.env:get_meta({x=x,y=y,z=z})
m:set_string("p1", "")
m:set_string("p2", "")
m:set_string("target", "")
end
end
end
end
meta = minetest.env:get_meta(target)
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.env:get_node({x=x,y=y,z=z}).name
if nn == "default:obsidian" or nn == "nether:portal" then
if nn == "nether:portal" then
minetest.env:remove_node({x=x,y=y,z=z})
end
local m = minetest.env:get_meta({x=x,y=y,z=z})
m:set_string("p1", "")
m:set_string("p2", "")
m:set_string("target", "")
end
end
end
end
end,
})
minetest.register_craftitem(":default:mese_crystal_fragment", {
description = "Mese Crystal Fragment",
inventory_image = "default_mese_crystal_fragment.png",
on_place = function(stack,_, pt)
if pt.under and minetest.env:get_node(pt.under).name == "default:obsidian" then
local done = make_portal(pt.under)
if done and not minetest.setting_getbool("creative_mode") then
stack:take_item()
end
end
return stack
end,
})
minetest.register_node("nether:rack", {
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description = "Netherrack",
tiles = {"nether_rack.png"},
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is_ground_content = true,
drop = {
max_items = 1,
items = {{
rarity = 3,
items = {"nether:rack"},
}}
},
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groups = {cracky=3,level=2},
sounds = default.node_sound_stone_defaults(),
})
minetest.register_node("nether:sand", {
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description = "Nethersand",
tiles = {"nether_sand.png"},
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is_ground_content = true,
groups = {crumbly=3,level=2,falling_node=1},
sounds = default.node_sound_dirt_defaults({
footstep = {name="default_gravel_footstep", gain=0.45},
}),
})
minetest.register_node("nether:glowstone", {
description = "Glowstone",
tiles = {"nether_glowstone.png"},
is_ground_content = true,
light_source = 13,
groups = {cracky=3,oddly_breakable_by_hand=3},
sounds = default.node_sound_glass_defaults(),
})
minetest.register_node("nether:brick", {
description = "Nether Brick",
tiles = {"nether_brick.png"},
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groups = {cracky=2,level=2},
sounds = default.node_sound_stone_defaults(),
})
stairs.register_stair_and_slab("nether_brick", "nether:brick",
{cracky=3, oddly_breakable_by_hand=1},
{"nether_brick.png"},
"nether stair",
"nether slab",
default.node_sound_stone_defaults())
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local fence_texture =
"default_fence_overlay.png^nether_brick.png^default_fence_overlay.png^[makealpha:255,126,126"
minetest.register_node("nether:fence_nether_brick", {
description = "Nether Brick Fence",
drawtype = "fencelike",
tiles = {"nether_brick.png"},
inventory_image = fence_texture,
wield_image = fence_texture,
paramtype = "light",
sunlight_propagates = true,
is_ground_content = false,
selection_box = {
type = "fixed",
fixed = {-1/7, -1/2, -1/7, 1/7, 1/2, 1/7},
},
groups = {cracky=3,level=2},
sounds = default.node_sound_stone_defaults(),
})
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local function replace(old, new)
for i=1,8 do
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minetest.register_ore({
ore_type = "scatter",
ore = new,
wherein = old,
clust_scarcity = 1,
clust_num_ores = 1,
clust_size = 1,
height_min = -31000,
height_max = NETHER_DEPTH,
})
end
end
replace("default:stone", "nether:rack")
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replace("default:stone_with_coal", "air")
replace("default:stone_with_iron", "air")
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replace("default:stone_with_mese", "default:lava_source")
replace("default:stone_with_diamond", "default:lava_source")
replace("default:stone_with_gold", "nether:glowstone")
replace("default:stone_with_copper", "nether:sand")
replace("default:gravel", "nether:sand")
replace("default:dirt", "nether:sand")
replace("default:sand", "nether:sand")
replace("default:cobble", "nether:brick")
replace("default:mossycobble", "nether:brick")
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replace("stairs:stair_cobble", "nether:brick")