dfcaverns/trees/blood_thorn.lua

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--------------------------------------------------
-- Blood thorn
-- Max trunk height 5
-- red with purple mottling
-- High density wood
-- Depth 3
-- internationalization boilerplate
local MP = minetest.get_modpath(minetest.get_current_modname())
local S, NS = dofile(MP.."/intllib.lua")
minetest.register_node("dfcaverns:blood_thorn", {
description = S("Blood Thorn Trunk"),
tiles = {"dfcaverns_blood_thorn_top.png", "dfcaverns_blood_thorn_top.png",
"dfcaverns_blood_thorn_side.png", "dfcaverns_blood_thorn_side.png", "dfcaverns_blood_thorn_side.png", "dfcaverns_blood_thorn_side.png"},
paramtype2 = "facedir",
paramtype = "light",
groups = {choppy = 3, flammable = 2, light_sensitive_fungus = 11},
_dfcaverns_dead_node = "dfcaverns:blood_thorn_dead",
sounds = default.node_sound_wood_defaults(),
on_place = minetest.rotate_node,
})
minetest.register_node("dfcaverns:blood_thorn_dead", {
description = S("Dead Blood Thorn Trunk"),
tiles = {"dfcaverns_blood_thorn_top.png^[multiply:#804000", "dfcaverns_blood_thorn_top.png^[multiply:#804000",
"dfcaverns_blood_thorn_side.png^[multiply:#804000"},
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paramtype2 = "facedir",
groups = {choppy = 3, flammable = 2},
sounds = default.node_sound_wood_defaults(),
on_place = minetest.rotate_node,
})
minetest.register_node("dfcaverns:blood_thorn_spike", {
description = S("Blood Thorn Spike"),
tiles = {
"dfcaverns_blood_thorn_spike_side.png^[transformR90",
"dfcaverns_blood_thorn_spike_side.png^[transformR270",
"dfcaverns_blood_thorn_spike_side.png",
"dfcaverns_blood_thorn_spike_side.png^[transformR180",
"dfcaverns_blood_thorn_spike_front.png",
"dfcaverns_blood_thorn_spike_front.png"
},
groups = {choppy = 3, flammable = 2, fall_damage_add_percent=100, light_sensitive_fungus = 11},
_dfcaverns_dead_node = "dfcaverns:blood_thorn_spike_dead",
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sounds = default.node_sound_wood_defaults(),
drawtype = "nodebox",
climbable = true,
damage_per_second = 1,
paramtype = "light",
paramtype2 = "facedir",
node_box = {
type = "fixed",
fixed = {
{-0.1875, -0.1875, 0.1875, 0.1875, 0.1875, 0.5}, -- base
{-0.125, -0.125, -0.125, 0.125, 0.125, 0.1875}, -- mid
{-0.0625, -0.0625, -0.5, 0.0625, 0.0625, -0.125}, -- tip
}
},
})
minetest.register_node("dfcaverns:blood_thorn_spike_dead", {
description = S("Dead Blood Thorn Spike"),
tiles = {
"dfcaverns_blood_thorn_spike_side.png^[transformR90^[multiply:#804000",
"dfcaverns_blood_thorn_spike_side.png^[transformR270^[multiply:#804000",
"dfcaverns_blood_thorn_spike_side.png^[multiply:#804000",
"dfcaverns_blood_thorn_spike_side.png^[transformR180^[multiply:#804000",
"dfcaverns_blood_thorn_spike_front.png^[multiply:#804000",
"dfcaverns_blood_thorn_spike_front.png^[multiply:#804000"
},
groups = {choppy = 3, flammable = 2, fall_damage_add_percent=100},
sounds = default.node_sound_wood_defaults(),
drawtype = "nodebox",
climbable = true,
paramtype = "light",
paramtype2 = "facedir",
node_box = {
type = "fixed",
fixed = {
{-0.1875, -0.1875, 0.1875, 0.1875, 0.1875, 0.5}, -- base
{-0.125, -0.125, -0.125, 0.125, 0.125, 0.1875}, -- mid
{-0.0625, -0.0625, -0.5, 0.0625, 0.0625, -0.125}, -- tip
}
},
})
local spike_directions = {
{dir={x=0,y=0,z=1}, facedir=2},
{dir={x=0,y=0,z=-1}, facedir=0},
{dir={x=1,y=0,z=0}, facedir=3},
{dir={x=-1,y=0,z=0}, facedir=1}
}
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-- This ensures consistent random maximum to bloodthorn growth
local max_bloodthorn_height = function(pos)
local next_seed = math.random(1, 1000000000)
math.randomseed(pos.x + pos.z * 2 ^ 8)
local output = math.random(3,6)
math.randomseed(next_seed)
return output
end
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function dfcaverns.grow_blood_thorn(pos, node)
if node.param2 >= 4 then
return
end
pos.y = pos.y - 1
if minetest.get_item_group(minetest.get_node(pos).name, "sand") == 0 then
return
end
pos.y = pos.y + 1
local height = 0
local max_height = max_bloodthorn_height(pos)
while node.name == "dfcaverns:blood_thorn" and height < max_height do
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height = height + 1
pos.y = pos.y + 1
node = minetest.get_node(pos)
end
if height == 7 or node.name ~= "air" then
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return
end
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minetest.set_node(pos, {name = "dfcaverns:blood_thorn"})
local dir = spike_directions[math.random(1,4)]
local spike_pos = vector.add(pos, dir.dir)
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if minetest.get_node(spike_pos).name == "air" then
minetest.set_node(spike_pos, {name="dfcaverns:blood_thorn_spike", param2=dir.facedir})
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end
dir = spike_directions[math.random(1,4)]
spike_pos = vector.add(pos, dir.dir)
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if minetest.get_node(spike_pos).name == "air" then
minetest.set_node(spike_pos, {name="dfcaverns:blood_thorn_spike", param2=dir.facedir})
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end
return true
end
minetest.register_abm({
label = "Grow Blood Thorn",
nodenames = {"dfcaverns:blood_thorn"},
catch_up = true,
interval = dfcaverns.config.blood_thorn_growth_interval,
chance = dfcaverns.config.blood_thorn_growth_chance,
action = function(pos, node)
dfcaverns.grow_blood_thorn(pos, node)
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end
})
function dfcaverns.spawn_blood_thorn(pos)
local height = max_bloodthorn_height(pos)
local x, y, z = pos.x, pos.y, pos.z
local maxy = y + height -- Trunk top
local vm = minetest.get_voxel_manip()
local minp, maxp = vm:read_from_map(
{x = x - 1, y = y, z = z - 1},
{x = x + 1, y = maxy, z = z + 1}
)
local area = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
local data = vm:get_data()
local data_param2 = vm:get_param2_data()
dfcaverns.spawn_blood_thorn_vm(area:indexp(pos), area, data, data_param2, height)
vm:set_data(data)
vm:set_param2_data(data_param2)
vm:write_to_map()
vm:update_map()
end
local c_air = minetest.get_content_id("air")
local c_ignore = minetest.get_content_id("ignore")
local c_blood_thorn = minetest.get_content_id("dfcaverns:blood_thorn")
local c_blood_thorn_spike = minetest.get_content_id("dfcaverns:blood_thorn_spike")
dfcaverns.spawn_blood_thorn_vm = function(vi, area, data, data_param2, height)
local pos = area:position(vi)
if height == nil then height = max_bloodthorn_height(pos) end
local x = pos.x
local y = pos.y
local z = pos.z
local maxy = y + height -- Trunk top
for yy = y, maxy do
local vi = area:index(x, yy, z)
local node_id = data[vi]
if node_id == c_air or node_id == c_ignore then
data[vi] = c_blood_thorn
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local dir = spike_directions[math.random(1,4)]
local spike_pos = {x = pos.x + dir.dir.x, y = yy, z = pos.z + dir.dir.z}
vi = area:indexp(spike_pos)
if data[vi] == c_air or data[vi] == c_c_ignore then
data[vi] = c_blood_thorn_spike
data_param2[vi] = dir.facedir
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end
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dir = spike_directions[math.random(1,4)]
spike_pos = {x = pos.x + dir.dir.x, y = yy, z = pos.z + dir.dir.z}
vi = area:indexp(spike_pos)
if data[vi] == c_air or data[vi] == c_c_ignore then
data[vi] = c_blood_thorn_spike
data_param2[vi] = dir.facedir
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end
else
break
end
end
end