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MineClone2/mods/ITEMS/mcl_ocean/kelp.lua

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local S = minetest.get_translator("mcl_ocean")
local mod_doc = minetest.get_modpath("doc") ~= nil
-- NOTE: whenever it becomes possible to fully implement kelp without the
-- plantlike_rooted limitation, please adapt the code accordingly.
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-- TODO: In MC, you can't actually destroy kelp by bucket'ing water in the middle.
-- However, because of the plantlike_rooted hack, we'll just allow it for now.
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-- List of supported surfaces for seagrass and kelp.
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local surfaces = {
{ "dirt", "mcl_core:dirt" },
{ "sand", "mcl_core:sand", 1 },
{ "redsand", "mcl_core:redsand", 1 },
{ "gravel", "mcl_core:gravel", 1 },
}
-- Is this water?
local function is_submerged(node, nodedef)
if minetest.get_item_group(node.name, "water") ~= 0 then
return nodedef.liquidtype -- Expected only "source" and "flowing" from water liquids
end
return false
end
-- Is the water downward flowing?
-- (kelp can grow/be placed inside downward flowing water)
local function is_downward_flowing(pos, node, nodedef, is_above)
result = (math.floor(node.param2 / 8) % 2) == 1
if not (result or is_above) then
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-- If not, also check node above
-- (this is needed due a weird quirk in the definition of "downwards flowing"
-- liquids in Minetest)
local node_above = minetest.get_node({x=pos.x,y=pos.y+1,z=pos.z})
local nodedef_above = minetest.registered_nodes[node_above.name]
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result = is_submerged(node_above, nodedef_above)
or is_downward_flowing(pos, node_above, nodedef_above, true)
end
return result
end
-- Converts param2 to kelp height.
local function get_kelp_height(param2)
return math.floor(param2 / 16)
end
-- Obtain pos and node of the top of kelp.
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local function get_kelp_top(pos, node)
local size = math.ceil(node.param2 / 16)
local pos_top = table.copy(pos)
pos_top.y = pos_top.y + size
return pos_top, minetest.get_node(pos_top)
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end
-- Obtain position of the first kelp unsubmerged.
local function get_kelp_unsubmerged(pos, node)
local x,y,z = pos.x, pos.y, pos.z
local height = get_kelp_height(node.param2)
for i=1,height do
local walk_pos = {x=x, y=y + i, z=z}
if minetest.get_item_group(minetest.get_node(walk_pos).name, "water") == 0 then
return walk_pos
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end
end
return nil
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end
-- Obtain next param2 if grown
local function grow_param2_step(param2)
-- TODO: allow kelp to grow bypass this limit according to MC rules.
-- https://minecraft.gamepedia.com/Kelp
local old_param2 = param2
param2 = param2+16 - param2 % 16
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if param2 > 240 then
param2 = 240
end
return param2, param2 ~= old_param2
end
local function kelp_place(pos, node, pos_top, def_top, is_downward_flowing)
-- Liquid source: Grow normally
minetest.set_node(pos, node)
-- Flowing liquid: Grow 1 step, but also turn the top node into a liquid source
if is_downward_flowing then
local alt_liq = def_top.liquid_alternative_source
if alt_liq then
minetest.set_node(pos_top, {name=alt_liq})
end
end
end
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local function kelp_on_place(itemstack, placer, pointed_thing)
if pointed_thing.type ~= "node" or not placer then
return itemstack
end
local player_name = placer:get_player_name()
local pos_under = pointed_thing.under
local pos_above = pointed_thing.above
local node_under = minetest.get_node(pos_under)
local nu_name = node_under.name
local def_under = minetest.registered_nodes[nu_name]
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if def_under and def_under.on_rightclick and not placer:get_player_control().sneak then
return def_under.on_rightclick(pos_under, node_under,
placer, itemstack, pointed_thing) or itemstack
end
if minetest.is_protected(pos_under, player_name) or
minetest.is_protected(pos_above, player_name) then
minetest.log("action", player_name
.. " tried to place " .. itemstack:get_name()
.. " at protected position "
.. minetest.pos_to_string(pos_under))
minetest.record_protection_violation(pos_under, player_name)
return itemstack
end
local new_kelp = false
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local downward_flowing = false
local pos_top, node_top, def_top
-- When placed on kelp.
if minetest.get_item_group(nu_name, "kelp") == 1 then
node_under.param2, new_kelp = grow_param2_step(node_under.param2)
-- Kelp must not reach the height limit.
-- Kelp must also be placed on top of kelp to add kelp.
if not new_kelp or pos_under.y >= pos_above.y then
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return itemstack
end
pos_top, node_top = get_kelp_top(pos_under, node_under)
def_top = minetest.registered_nodes[node_top.name]
-- When placed on surface.
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else
for _,surface in pairs(surfaces) do
-- Surface must support kelp
if nu_name == surface[2] then
node_under.name = "mcl_ocean:kelp_" ..surface[1]
node_under.param2 = minetest.registered_items[nu_name].place_param2 or 16
new_kelp = true
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break
end
end
-- Kelp must also be placed on top of surface to add new kelp.
if not new_kelp or pos_under.y >= pos_above.y then
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return itemstack
end
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pos_top = pos_above
node_top = minetest.get_node(pos_above)
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def_top = minetest.registered_nodes[node_top.name]
end
-- New kelp must also be submerged in water.
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downward_flowing = is_downward_flowing(pos_top, node_top, def_top)
if not (is_submerged(node_top, def_top) or downward_flowing) then
return itemstack
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end
-- Play sound, place surface/kelp and take away an item
local def_node = minetest.registered_items[nu_name]
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if def_node.sounds then
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minetest.sound_play(def_node.sounds.place, { gain = 0.5, pos = pos_under }, true)
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end
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kelp_place(pos_under, node_under, pos_top, def_top, downward_flowing)
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if not minetest.is_creative_enabled(player_name) then
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itemstack:take_item()
end
return itemstack
end
-- From kelp at pos, drop kelp until reaching its height.
local function kelp_drop(pos, height)
local x,y,z = pos.x,pos.y,pos.z
for i=1,height do
minetest.add_item({x=x, y=y+i, z=z}, "mcl_ocean:kelp")
end
end
local function kelp_dig(dig_pos, pos, node, is_drop)
local param2 = node.param2
-- pos.y points to the surface, offset needed to point to the first kelp
local new_height = dig_pos.y - (pos.y+1)
-- Digs the entire kelp: invoke after_dig_node to set_node
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if new_height <= 0 then
if is_drop then
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kelp_drop(dig_pos, get_kelp_height(param2))
end
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minetest.set_node(pos, {
name=minetest.registered_nodes[node.name].node_dig_prediction,
param=node.param, param2=0 })
-- Digs the kelp beginning at a height
else
if is_drop then
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kelp_drop(dig_pos, get_kelp_height(param2) - new_height)
end
minetest.set_node(pos, {name=node.name, param=node.param, param2=16*new_height})
end
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end
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minetest.register_craftitem("mcl_ocean:kelp", {
description = S("Kelp"),
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_tt_help = S("Grows in water on dirt, sand, gravel"),
_doc_items_create_entry = false,
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inventory_image = "mcl_ocean_kelp_item.png",
wield_image = "mcl_ocean_kelp_item.png",
on_place = kelp_on_place,
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groups = { deco_block = 1 },
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})
-- Kelp nodes: kelp on a surface node
for s=1, #surfaces do
local def = minetest.registered_nodes[surfaces[s][2]]
local alt
if surfaces[s][3] == 1 then
alt = surfaces[s][2]
end
local sounds = table.copy(def.sounds)
local leaf_sounds = mcl_sounds.node_sound_leaves_defaults()
sounds.dig = leaf_sounds.dig
sounds.dug = leaf_sounds.dug
sounds.place = leaf_sounds.place
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local tt_help, doc_longdesc, doc_img, desc
if surfaces[s][1] == "dirt" then
doc_longdesc = S("Kelp grows inside water on top of dirt, sand or gravel.")
desc = S("Kelp")
doc_create = true
doc_img = "mcl_ocean_kelp_item.png"
else
doc_create = false
end
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minetest.register_node("mcl_ocean:kelp_"..surfaces[s][1], {
_doc_items_entry_name = desc,
_doc_items_longdesc = doc_longdesc,
_doc_items_create_entry = doc_create,
_doc_items_image = doc_img,
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drawtype = "plantlike_rooted",
paramtype = "light",
paramtype2 = "leveled",
place_param2 = 16,
tiles = def.tiles,
special_tiles = {
{
image = "mcl_ocean_kelp_plant.png",
animation = {type="vertical_frames", aspect_w=16, aspect_h=16, length=2.0},
tileable_vertical = true,
}
},
inventory_image = "("..def.tiles[1]..")^mcl_ocean_kelp_item.png",
wield_image = "mcl_ocean_kelp_item.png",
selection_box = {
type = "fixed",
fixed = {
{ -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 },
{ -0.5, 0.5, -0.5, 0.5, 1.5, 0.5 },
},
},
groups = { dig_immediate = 3, deco_block = 1, plant = 1, kelp = 1, falling_node = surfaces[s][3] },
sounds = sounds,
node_dig_prediction = surfaces[s][2],
after_dig_node = function(pos)
minetest.set_node(pos, {name=surface[s][2]})
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end,
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-- TODO: add ability to detect whether the kelp or the surface is dug.
-- Currently, digging the surface gives sand, which isn't ideal.
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on_dig = function(pos, node, digger)
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minetest.chat_send_all("mo2")
local is_drop = true
if digger and minetest.is_creative_enabled(digger:get_player_name()) then
is_drop = false
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end
kelp_dig(pos, pos, node, is_drop)
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end,
drop = "", -- drops are handled in on_dig
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_mcl_falling_node_alternative = alt,
_mcl_hardness = 0,
_mcl_blast_resistance = 0,
})
if mod_doc and surfaces[s][1] ~= "dirt" then
doc.add_entry_alias("nodes", "mcl_ocean:kelp_dirt", "nodes", "mcl_ocean:kelp_"..surfaces[s][1])
end
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end
if mod_doc then
doc.add_entry_alias("nodes", "mcl_ocean:kelp_dirt", "craftitems", "mcl_ocean:kelp")
end
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-- Dried kelp stuff
-- TODO: This is supposed to be eaten very fast
minetest.register_craftitem("mcl_ocean:dried_kelp", {
description = S("Dried Kelp"),
_doc_items_longdesc = S("Dried kelp is a food item."),
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inventory_image = "mcl_ocean_dried_kelp.png",
wield_image = "mcl_ocean_dried_kelp.png",
groups = { food = 2, eatable = 1 },
on_place = minetest.item_eat(1),
on_secondary_use = minetest.item_eat(1),
groups = { food = 2, eatable = 1 },
_mcl_saturation = 0.6,
})
local mod_screwdriver = minetest.get_modpath("screwdriver") ~= nil
local on_rotate
if mod_screwdriver then
on_rotate = screwdriver.rotate_3way
end
minetest.register_node("mcl_ocean:dried_kelp_block", {
description = S("Dried Kelp Block"),
_doc_items_longdesc = S("A decorative block that serves as a great furnace fuel."),
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tiles = { "mcl_ocean_dried_kelp_top.png", "mcl_ocean_dried_kelp_bottom.png", "mcl_ocean_dried_kelp_side.png" },
groups = { handy = 1, building_block = 1, flammable = 2, fire_encouragement = 30, fire_flammability = 60 },
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sounds = mcl_sounds.node_sound_leaves_defaults(),
paramtype2 = "facedir",
on_place = mcl_util.rotate_axis,
on_rotate = on_rotate,
_mcl_hardness = 0.5,
_mcl_blast_resistance = 12.5,
})
minetest.register_craft({
type = "cooking",
recipe = "mcl_ocean:kelp",
output = "mcl_ocean:dried_kelp",
cooktime = 10,
})
minetest.register_craft({
recipe = {
{ "mcl_ocean:dried_kelp","mcl_ocean:dried_kelp","mcl_ocean:dried_kelp" },
{ "mcl_ocean:dried_kelp","mcl_ocean:dried_kelp","mcl_ocean:dried_kelp" },
{ "mcl_ocean:dried_kelp","mcl_ocean:dried_kelp","mcl_ocean:dried_kelp" },
},
output = "mcl_ocean:dried_kelp_block",
})
minetest.register_craft({
recipe = {
{ "mcl_ocean:dried_kelp_block" },
},
output = "mcl_ocean:dried_kelp 9",
})
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minetest.register_craft({
type = "fuel",
recipe = "mcl_ocean:dried_kelp_block",
burntime = 200,
})
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-- Grow kelp
minetest.register_abm({
label = "Kelp growth",
nodenames = { "group:kelp" },
-- interval = 45,
-- chance = 12,
interval = 1,
chance = 1,
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catch_up = false,
action = function(pos, node, active_object_count, active_object_count_wider)
local grow
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-- Grow kelp by 1 node length if it would grow inside water
node.param2, grow = grow_param2_step(node.param2)
local pos_top, node_top = get_kelp_top(pos, node)
local def_top = minetest.registered_nodes[node_top.name]
if grow and is_submerged(node_top, def_top) then
kelp_place(pos, node, pos_top, def_top,
is_downward_flowing(pos_top, node_top, def_top))
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end
end,
})
-- Break kelp not underwater.
minetest.register_abm({
label = "Kelp drops",
nodenames = { "group:kelp" },
interval = 0.25,
chance = 1,
catch_up = false,
action = function(pos, node)
local dig_pos = get_kelp_unsubmerged(pos, node)
if dig_pos then
kelp_dig(dig_pos, pos, node, true)
end
end
})