forked from VoxeLibre/VoxeLibre
1296 lines
39 KiB
Lua
1296 lines
39 KiB
Lua
--
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-- Lava vs water interactions
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--
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local mg_name = minetest.get_mapgen_setting("mg_name")
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minetest.register_abm({
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label = "Lava cooling",
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nodenames = {"group:lava"},
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neighbors = {"group:water"},
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interval = 1,
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chance = 1,
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action = function(pos, node, active_object_count, active_object_count_wider)
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local water = minetest.find_nodes_in_area({x=pos.x-1, y=pos.y-1, z=pos.z-1}, {x=pos.x+1, y=pos.y+1, z=pos.z+1}, "group:water")
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local lavatype = minetest.registered_nodes[node.name].liquidtype
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for w=1, #water do
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local waternode = minetest.get_node(water[w])
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local watertype = minetest.registered_nodes[waternode.name].liquidtype
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-- Lava on top of water: Water turns into stone
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if water[w].y < pos.y and water[w].x == pos.x and water[w].z == pos.z then
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minetest.set_node(water[w], {name="mcl_core:stone"})
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minetest.sound_play("fire_extinguish_flame", {pos = water[w], gain = 0.25, max_hear_distance = 16})
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-- Flowing lava vs water on same level: Lava turns into cobblestone
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elseif lavatype == "flowing" and water[w].y == pos.y and (water[w].x == pos.x or water[w].z == pos.z) then
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minetest.set_node(pos, {name="mcl_core:cobble"})
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minetest.sound_play("fire_extinguish_flame", {pos = pos, gain = 0.25, max_hear_distance = 16})
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-- Still lava vs flowing water above or horizontally neighbored: Lava turns into obsidian
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elseif lavatype == "source" and
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((water[w].y > pos.y and water[w].x == pos.x and water[w].z == pos.z) or
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(water[w].y == pos.y and (water[w].x == pos.x or water[w].z == pos.z))) then
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minetest.set_node(pos, {name="mcl_core:obsidian"})
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minetest.sound_play("fire_extinguish_flame", {pos = pos, gain = 0.25, max_hear_distance = 16})
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-- Flowing water above flowing lava: Lava turns into cobblestone
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elseif watertype == "flowing" and lavatype == "flowing" and water[w].y > pos.y and water[w].x == pos.x and water[w].z == pos.z then
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minetest.set_node(pos, {name="mcl_core:cobble"})
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minetest.sound_play("fire_extinguish_flame", {pos = pos, gain = 0.25, max_hear_distance = 16})
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end
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end
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end,
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})
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--
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-- Papyrus and cactus growing
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--
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-- Functions
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mcl_core.grow_cactus = function(pos, node)
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pos.y = pos.y-1
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local name = minetest.get_node(pos).name
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if minetest.get_item_group(name, "sand") ~= 0 then
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pos.y = pos.y+1
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local height = 0
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while minetest.get_node(pos).name == "mcl_core:cactus" and height < 4 do
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height = height+1
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pos.y = pos.y+1
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end
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if height < 3 then
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if minetest.get_node(pos).name == "air" then
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minetest.set_node(pos, {name="mcl_core:cactus"})
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end
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end
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end
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end
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mcl_core.grow_reeds = function(pos, node)
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pos.y = pos.y-1
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local name = minetest.get_node(pos).name
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if minetest.get_item_group(name, "soil_sugarcane") ~= 0 then
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if minetest.find_node_near(pos, 1, {"group:water"}) == nil and minetest.find_node_near(pos, 1, {"group:frosted_ice"}) == nil then
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return
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end
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pos.y = pos.y+1
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local height = 0
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while minetest.get_node(pos).name == "mcl_core:reeds" and height < 3 do
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height = height+1
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pos.y = pos.y+1
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end
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if height < 3 then
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if minetest.get_node(pos).name == "air" then
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minetest.set_node(pos, {name="mcl_core:reeds"})
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end
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end
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end
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end
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-- ABMs
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local function drop_attached_node(p)
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local nn = minetest.get_node(p).name
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if nn == "air" or nn == "ignore" then
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return
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end
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minetest.remove_node(p)
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for _, item in pairs(minetest.get_node_drops(nn, "")) do
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local pos = {
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x = p.x + math.random()/2 - 0.25,
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y = p.y + math.random()/2 - 0.25,
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z = p.z + math.random()/2 - 0.25,
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}
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if item ~= "" then
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minetest.add_item(pos, item)
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end
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end
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end
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-- Helper function for node actions for liquid flow
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local liquid_flow_action = function(pos, group, action)
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local check_detach = function(pos, xp, yp, zp)
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local p = {x=pos.x+xp, y=pos.y+yp, z=pos.z+zp}
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local n = minetest.get_node_or_nil(p)
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if not n then
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return false
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end
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local d = minetest.registered_nodes[n.name]
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if not d then
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return false
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end
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--[[ Check if we want to perform the liquid action.
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* 1: Item must be in liquid group
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* 2a: If target node is below liquid, always succeed
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* 2b: If target node is horizontal to liquid: succeed if source, otherwise check param2 for horizontal flow direction ]]
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local range = d.liquid_range or 8
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if (minetest.get_item_group(n.name, group) ~= 0) and
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((yp > 0) or
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(yp == 0 and ((d.liquidtype == "source") or (n.param2 > (8-range) and n.param2 < 9)))) then
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action(pos)
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end
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end
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local posses = {
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{ x=-1, y=0, z=0 },
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{ x=1, y=0, z=0 },
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{ x=0, y=0, z=-1 },
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{ x=0, y=0, z=1 },
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{ x=0, y=1, z=0 },
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}
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for p=1,#posses do
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check_detach(pos, posses[p].x, posses[p].y, posses[p].z)
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end
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end
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-- Drop some nodes next to flowing water, if it would flow into the node
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minetest.register_abm({
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label = "Wash away dig_by_water nodes by water flow",
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nodenames = {"group:dig_by_water"},
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neighbors = {"group:water"},
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interval = 1,
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chance = 1,
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action = function(pos, node, active_object_count, active_object_count_wider)
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liquid_flow_action(pos, "water", function(pos)
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drop_attached_node(pos)
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minetest.dig_node(pos)
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end)
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end,
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})
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-- Destroy some nodes next to flowing lava, if it would flow into the node
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minetest.register_abm({
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label = "Destroy destroy_by_lava_flow nodes by lava flow",
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nodenames = {"group:destroy_by_lava_flow"},
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neighbors = {"group:lava"},
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interval = 1,
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chance = 1,
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action = function(pos, node, active_object_count, active_object_count_wider)
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liquid_flow_action(pos, "lava", function(pos)
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minetest.remove_node(pos)
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minetest.sound_play("builtin_item_lava", {pos = pos, gain = 0.25, max_hear_distance = 16})
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core.check_for_falling(pos)
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end)
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end,
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})
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minetest.register_abm({
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label = "Cactus growth",
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nodenames = {"mcl_core:cactus"},
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neighbors = {"group:sand"},
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interval = 25,
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chance = 10,
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action = function(pos)
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mcl_core.grow_cactus(pos)
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end,
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})
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minetest.register_abm({
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label = "Sugar canes growth",
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nodenames = {"mcl_core:reeds"},
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neighbors = {"group:soil_sugarcane"},
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interval = 25,
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chance = 10,
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action = function(pos)
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mcl_core.grow_reeds(pos)
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end,
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})
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--
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-- Sugar canes drop
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--
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local timber_nodenames={"mcl_core:reeds"}
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minetest.register_on_dignode(function(pos, node)
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local i=1
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while timber_nodenames[i]~=nil do
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local np={x=pos.x, y=pos.y+1, z=pos.z}
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while minetest.get_node(np).name==timber_nodenames[i] do
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minetest.remove_node(np)
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minetest.add_item(np, timber_nodenames[i])
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np={x=np.x, y=np.y+1, z=np.z}
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end
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i=i+1
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end
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end)
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local function air_leaf(leaftype)
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if math.random(0, 50) == 3 then
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return {name = "air"}
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else
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return {name = leaftype}
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end
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end
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function mcl_core.generate_tree(pos, tree_type, two_by_two)
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pos.y = pos.y-1
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local nodename = minetest.get_node(pos).name
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pos.y = pos.y+1
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if not minetest.get_node_light(pos) then
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return
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end
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local node
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if tree_type == nil or tree_type == 1 then
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if mg_name == "v6" then
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mcl_core.generate_v6_oak_tree(pos)
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else
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mcl_core.generate_oak_tree(pos)
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end
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elseif tree_type == 2 and two_by_two then
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mcl_core.generate_dark_oak_tree(pos)
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elseif tree_type == 3 then
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if two_by_two then
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mcl_core.generate_huge_spruce_tree(pos)
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else
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if mg_name == "v6" then
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mcl_core.generate_v6_spruce_tree(pos)
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else
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mcl_core.generate_spruce_tree(pos)
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end
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end
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elseif tree_type == 4 then
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mcl_core.generate_acacia_tree(pos)
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elseif tree_type == 5 then
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if two_by_two then
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mcl_core.generate_huge_jungle_tree(pos)
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else
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if mg_name == "v6" then
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mcl_core.generate_v6_jungle_tree(pos)
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else
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mcl_core.generate_jungle_tree(pos)
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end
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end
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elseif tree_type == 6 then
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mcl_core.generate_birch_tree(pos)
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end
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end
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-- Classic oak in v6 style
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function mcl_core.generate_v6_oak_tree(pos)
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local trunk = "mcl_core:tree"
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local leaves = "mcl_core:leaves"
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node = {name = ""}
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for dy=1,4 do
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pos.y = pos.y+dy
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if minetest.get_node(pos).name ~= "air" then
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return
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end
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pos.y = pos.y-dy
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end
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node = {name = trunk}
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for dy=0,4 do
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pos.y = pos.y+dy
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if minetest.get_node(pos).name == "air" then
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minetest.add_node(pos, node)
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end
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pos.y = pos.y-dy
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end
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node = {name = leaves}
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pos.y = pos.y+3
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local rarity = 0
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if math.random(0, 10) == 3 then
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rarity = 1
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end
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for dx=-2,2 do
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for dz=-2,2 do
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for dy=0,3 do
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pos.x = pos.x+dx
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pos.y = pos.y+dy
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pos.z = pos.z+dz
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if dx == 0 and dz == 0 and dy==3 then
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if minetest.get_node(pos).name == "air" and math.random(1, 5) <= 4 then
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minetest.add_node(pos, node)
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minetest.add_node(pos, air_leaf(leaves))
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end
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elseif dx == 0 and dz == 0 and dy==4 then
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if minetest.get_node(pos).name == "air" and math.random(1, 5) <= 4 then
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minetest.add_node(pos, node)
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minetest.add_node(pos, air_leaf(leaves))
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end
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elseif math.abs(dx) ~= 2 and math.abs(dz) ~= 2 then
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if minetest.get_node(pos).name == "air" then
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minetest.add_node(pos, node)
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minetest.add_node(pos, air_leaf(leaves))
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end
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else
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if math.abs(dx) ~= 2 or math.abs(dz) ~= 2 then
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if minetest.get_node(pos).name == "air" and math.random(1, 5) <= 4 then
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minetest.add_node(pos, node)
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minetest.add_node(pos, air_leaf(leaves))
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end
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end
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end
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pos.x = pos.x-dx
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pos.y = pos.y-dy
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pos.z = pos.z-dz
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end
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end
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end
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end
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-- Oak
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function mcl_core.generate_oak_tree(pos)
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local r = math.random(1, 12)
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local path
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local offset
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-- Balloon oak
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if r == 1 then
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local s = math.random(1, 12)
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if s == 1 then
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-- Small balloon oak
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path = minetest.get_modpath("mcl_core") .. "/schematics/mcl_core_oak_balloon.mts"
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offset = { x = -2, y = -1, z = -2 }
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else
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-- Large balloon oak
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local t = math.random(1, 2)
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path = minetest.get_modpath("mcl_core") .. "/schematics/mcl_core_oak_large_"..t..".mts"
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if t == 1 then
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offset = { x = -3, y = -1, z = -3 }
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elseif t == 2 then
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offset = { x = -4, y = -1, z = -4 }
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end
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end
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-- Classic oak
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else
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path = minetest.get_modpath("mcl_core") .. "/schematics/mcl_core_oak_classic.mts"
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offset = { x = -2, y = -1, z = -2 }
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end
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minetest.place_schematic(vector.add(pos, offset), path, "random", nil, false)
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end
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-- Birch
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function mcl_core.generate_birch_tree(pos)
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local path = minetest.get_modpath("mcl_core") ..
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"/schematics/mcl_core_birch.mts"
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minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2}, path, "random", nil, false)
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end
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-- BEGIN of spruce tree generation functions --
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-- Copied from Minetest Game 0.4.15 from the pine tree (default.generate_pine_tree)
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-- Pine tree (=spruce tree in MCL2) from mg mapgen mod, design by sfan5, pointy top added by paramat
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local function add_spruce_leaves(data, vi, c_air, c_ignore, c_snow, c_spruce_leaves)
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local node_id = data[vi]
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if node_id == c_air or node_id == c_ignore or node_id == c_snow then
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data[vi] = c_spruce_leaves
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end
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end
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function mcl_core.generate_v6_spruce_tree(pos)
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local x, y, z = pos.x, pos.y, pos.z
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local maxy = y + math.random(9, 13) -- Trunk top
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local c_air = minetest.get_content_id("air")
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local c_ignore = minetest.get_content_id("ignore")
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local c_spruce_tree = minetest.get_content_id("mcl_core:sprucetree")
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local c_spruce_leaves = minetest.get_content_id("mcl_core:spruceleaves")
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local c_snow = minetest.get_content_id("mcl_core:snow")
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local vm = minetest.get_voxel_manip()
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local minp, maxp = vm:read_from_map(
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{x = x - 3, y = y, z = z - 3},
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{x = x + 3, y = maxy + 3, z = z + 3}
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)
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local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
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local data = vm:get_data()
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|
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-- Upper branches layer
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local dev = 3
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for yy = maxy - 1, maxy + 1 do
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for zz = z - dev, z + dev do
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local vi = a:index(x - dev, yy, zz)
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local via = a:index(x - dev, yy + 1, zz)
|
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for xx = x - dev, x + dev do
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if math.random() < 0.95 - dev * 0.05 then
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add_spruce_leaves(data, vi, c_air, c_ignore, c_snow,
|
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c_spruce_leaves)
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end
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vi = vi + 1
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via = via + 1
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end
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end
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dev = dev - 1
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end
|
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|
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-- Centre top nodes
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add_spruce_leaves(data, a:index(x, maxy + 1, z), c_air, c_ignore, c_snow,
|
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c_spruce_leaves)
|
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add_spruce_leaves(data, a:index(x, maxy + 2, z), c_air, c_ignore, c_snow,
|
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c_spruce_leaves) -- Paramat added a pointy top node
|
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|
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-- Lower branches layer
|
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local my = 0
|
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for i = 1, 20 do -- Random 2x2 squares of leaves
|
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local xi = x + math.random(-3, 2)
|
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local yy = maxy + math.random(-6, -5)
|
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local zi = z + math.random(-3, 2)
|
||
if yy > my then
|
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my = yy
|
||
end
|
||
for zz = zi, zi+1 do
|
||
local vi = a:index(xi, yy, zz)
|
||
local via = a:index(xi, yy + 1, zz)
|
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for xx = xi, xi + 1 do
|
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add_spruce_leaves(data, vi, c_air, c_ignore, c_snow,
|
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c_spruce_leaves)
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vi = vi + 1
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via = via + 1
|
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end
|
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end
|
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end
|
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|
||
dev = 2
|
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for yy = my + 1, my + 2 do
|
||
for zz = z - dev, z + dev do
|
||
local vi = a:index(x - dev, yy, zz)
|
||
local via = a:index(x - dev, yy + 1, zz)
|
||
for xx = x - dev, x + dev do
|
||
if math.random() < 0.95 - dev * 0.05 then
|
||
add_spruce_leaves(data, vi, c_air, c_ignore, c_snow,
|
||
c_spruce_leaves)
|
||
end
|
||
vi = vi + 1
|
||
via = via + 1
|
||
end
|
||
end
|
||
dev = dev - 1
|
||
end
|
||
|
||
-- Trunk
|
||
-- Force-place lowest trunk node to replace sapling
|
||
data[a:index(x, y, z)] = c_spruce_tree
|
||
for yy = y + 1, maxy do
|
||
local vi = a:index(x, yy, z)
|
||
local node_id = data[vi]
|
||
if node_id == c_air or node_id == c_ignore or
|
||
node_id == c_spruce_leaves or node_id == c_snow then
|
||
data[vi] = c_spruce_tree
|
||
end
|
||
end
|
||
|
||
vm:set_data(data)
|
||
vm:write_to_map()
|
||
end
|
||
|
||
mcl_core.generate_spruce_tree = function(pos)
|
||
local r = math.random(1, 3)
|
||
local path = minetest.get_modpath("mcl_core") .. "/schematics/mcl_core_spruce_"..r..".mts"
|
||
minetest.place_schematic({ x = pos.x - 3, y = pos.y - 1, z = pos.z - 3 }, path, "0", nil, false)
|
||
end
|
||
|
||
mcl_core.generate_huge_spruce_tree = function(pos)
|
||
local r1 = math.random(1, 2)
|
||
local r2 = math.random(1, 3)
|
||
local path
|
||
local offset = { x = -4, y = -1, z = -5 }
|
||
if r1 <= 2 then
|
||
-- Mega Spruce Taiga (full canopy)
|
||
path = minetest.get_modpath("mcl_core") .. "/schematics/mcl_core_spruce_huge_"..r2..".mts"
|
||
else
|
||
-- Mega Taiga (leaves only at top)
|
||
if r2 == 1 or r2 == 3 then
|
||
offset = { x = -3, y = -1, z = -4}
|
||
end
|
||
path = minetest.get_modpath("mcl_core") .. "/schematics/mcl_core_spruce_huge_up_"..r2..".mts"
|
||
end
|
||
minetest.place_schematic(vector.add(pos, offset), path, "0", nil, false)
|
||
end
|
||
|
||
-- END of spruce tree functions --
|
||
|
||
-- Acacia tree (multiple variants)
|
||
function mcl_core.generate_acacia_tree(pos)
|
||
local r = math.random(1, 7)
|
||
local offset = vector.new()
|
||
if r == 2 or r == 3 then
|
||
offset = { x = -4, y = -1, z = -4 }
|
||
elseif r == 4 or r == 6 or r == 7 then
|
||
offset = { x = -3, y = -1, z = -3 }
|
||
elseif r == 1 or r == 5 then
|
||
offset = { x = -5, y = -1, z = -5 }
|
||
end
|
||
local path = minetest.get_modpath("mcl_core") .. "/schematics/mcl_core_acacia_"..r..".mts"
|
||
minetest.place_schematic(vector.add(pos, offset), path, "random", nil, false)
|
||
end
|
||
|
||
-- Generate dark oak tree with 2×2 trunk.
|
||
-- With pos being the lower X and the higher Z value of the trunk
|
||
function mcl_core.generate_dark_oak_tree(pos)
|
||
local path = minetest.get_modpath("mcl_core") ..
|
||
"/schematics/mcl_core_dark_oak.mts"
|
||
minetest.place_schematic({x = pos.x - 3, y = pos.y - 1, z = pos.z - 4}, path, "random", nil, false)
|
||
end
|
||
|
||
-- Helper function for jungle tree, form Minetest Game 0.4.15
|
||
local function add_trunk_and_leaves(data, a, pos, tree_cid, leaves_cid,
|
||
height, size, iters)
|
||
local x, y, z = pos.x, pos.y, pos.z
|
||
local c_air = minetest.CONTENT_AIR
|
||
local c_ignore = minetest.CONTENT_IGNORE
|
||
|
||
-- Trunk
|
||
data[a:index(x, y, z)] = tree_cid -- Force-place lowest trunk node to replace sapling
|
||
for yy = y + 1, y + height - 1 do
|
||
local vi = a:index(x, yy, z)
|
||
local node_id = data[vi]
|
||
if node_id == c_air or node_id == c_ignore or node_id == leaves_cid then
|
||
data[vi] = tree_cid
|
||
end
|
||
end
|
||
|
||
-- Force leaves near the trunk
|
||
for z_dist = -1, 1 do
|
||
for y_dist = -size, 1 do
|
||
local vi = a:index(x - 1, y + height + y_dist, z + z_dist)
|
||
for x_dist = -1, 1 do
|
||
if data[vi] == c_air or data[vi] == c_ignore then
|
||
data[vi] = leaves_cid
|
||
end
|
||
vi = vi + 1
|
||
end
|
||
end
|
||
end
|
||
|
||
-- Randomly add leaves in 2x2x2 clusters.
|
||
for i = 1, iters do
|
||
local clust_x = x + math.random(-size, size - 1)
|
||
local clust_y = y + height + math.random(-size, 0)
|
||
local clust_z = z + math.random(-size, size - 1)
|
||
|
||
for xi = 0, 1 do
|
||
for yi = 0, 1 do
|
||
for zi = 0, 1 do
|
||
local vi = a:index(clust_x + xi, clust_y + yi, clust_z + zi)
|
||
if data[vi] == c_air or data[vi] == c_ignore then
|
||
data[vi] = leaves_cid
|
||
end
|
||
end
|
||
end
|
||
end
|
||
end
|
||
end
|
||
|
||
-- Old jungle tree grow function from Minetest Game 0.4.15, imitating v6 jungle trees
|
||
function mcl_core.generate_v6_jungle_tree(pos)
|
||
--[[
|
||
NOTE: Jungletree-placing code is currently duplicated in the engine
|
||
and in games that have saplings; both are deprecated but not
|
||
replaced yet
|
||
--]]
|
||
|
||
local x, y, z = pos.x, pos.y, pos.z
|
||
local height = math.random(8, 12)
|
||
local c_air = minetest.get_content_id("air")
|
||
local c_ignore = minetest.get_content_id("ignore")
|
||
local c_jungletree = minetest.get_content_id("mcl_core:jungletree")
|
||
local c_jungleleaves = minetest.get_content_id("mcl_core:jungleleaves")
|
||
|
||
local vm = minetest.get_voxel_manip()
|
||
local minp, maxp = vm:read_from_map(
|
||
{x = x - 3, y = y - 1, z = z - 3},
|
||
{x = x + 3, y = y + height + 1, z = z + 3}
|
||
)
|
||
local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
|
||
local data = vm:get_data()
|
||
|
||
add_trunk_and_leaves(data, a, pos, c_jungletree, c_jungleleaves, height, 3, 30)
|
||
|
||
-- Roots
|
||
for z_dist = -1, 1 do
|
||
local vi_1 = a:index(x - 1, y - 1, z + z_dist)
|
||
local vi_2 = a:index(x - 1, y, z + z_dist)
|
||
for x_dist = -1, 1 do
|
||
if math.random(1, 3) >= 2 then
|
||
if data[vi_1] == c_air or data[vi_1] == c_ignore then
|
||
data[vi_1] = c_jungletree
|
||
elseif data[vi_2] == c_air or data[vi_2] == c_ignore then
|
||
data[vi_2] = c_jungletree
|
||
end
|
||
end
|
||
vi_1 = vi_1 + 1
|
||
vi_2 = vi_2 + 1
|
||
end
|
||
end
|
||
|
||
vm:set_data(data)
|
||
vm:write_to_map()
|
||
end
|
||
|
||
function mcl_core.generate_jungle_tree(pos)
|
||
local path = minetest.get_modpath("mcl_core") ..
|
||
"/schematics/mcl_core_jungle_tree.mts"
|
||
minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2}, path, "random", nil, false)
|
||
end
|
||
|
||
-- Generate huge jungle tree with 2×2 trunk.
|
||
-- With pos being the lower X and the higher Z value of the trunk.
|
||
function mcl_core.generate_huge_jungle_tree(pos)
|
||
-- 2 variants
|
||
local r = math.random(1, 2)
|
||
local path = minetest.get_modpath("mcl_core") ..
|
||
"/schematics/mcl_core_jungle_tree_huge_"..r..".mts"
|
||
minetest.place_schematic({x = pos.x - 6, y = pos.y - 1, z = pos.z - 7}, path, "random", nil, false)
|
||
end
|
||
|
||
|
||
local grass_spread_randomizer = PseudoRandom(minetest.get_mapgen_setting("seed"))
|
||
|
||
------------------------------
|
||
-- Spread grass blocks and mycelium on neighbor dirt
|
||
------------------------------
|
||
minetest.register_abm({
|
||
label = "Grass Block and Mycelium spread",
|
||
nodenames = {"mcl_core:dirt"},
|
||
neighbors = {"air", "mcl_core:dirt_with_grass", "mcl_core:mycelium"},
|
||
interval = 30,
|
||
chance = 20,
|
||
catch_up = false,
|
||
action = function(pos)
|
||
if pos == nil then
|
||
return
|
||
end
|
||
local can_change = false
|
||
local above = {x=pos.x, y=pos.y+1, z=pos.z}
|
||
local abovenode = minetest.get_node(above)
|
||
if minetest.get_item_group(abovenode.name, "liquid") ~= 0 or minetest.get_item_group(abovenode.name, "opaque") == 1 then
|
||
-- Never grow directly below liquids or opaque blocks
|
||
return
|
||
end
|
||
local light_self = minetest.get_node_light(above)
|
||
if not light_self then return end
|
||
--[[ Try to find a spreading dirt-type block (e.g. grass block or mycelium)
|
||
within a 3×5×3 area, with the source block being on the 2nd-topmost layer. ]]
|
||
local nodes = minetest.find_nodes_in_area({x=pos.x-1, y=pos.y-1, z=pos.z-1}, {x=pos.x+1, y=pos.y+3, z=pos.z+1}, "group:spreading_dirt_type")
|
||
local p2
|
||
-- Nothing found ? Bail out!
|
||
if #nodes <= 0 then
|
||
return
|
||
else
|
||
p2 = nodes[grass_spread_randomizer:next(1, #nodes)]
|
||
end
|
||
|
||
-- Found it! Now check light levels!
|
||
local source_above = {x=p2.x, y=p2.y+1, z=p2.z}
|
||
local light_source = minetest.get_node_light(source_above)
|
||
if not light_source then return end
|
||
|
||
if light_self >= 4 and light_source >= 9 then
|
||
-- All checks passed! Let's spread the grass/mycelium!
|
||
local n2 = minetest.get_node(p2)
|
||
minetest.set_node(pos, {name=n2.name})
|
||
|
||
-- If this was mycelium, uproot plant above
|
||
if n2.name == "mcl_core:mycelium" then
|
||
local tad = minetest.registered_nodes[minetest.get_node(above).name]
|
||
if tad.groups and tad.groups.non_mycelium_plant then
|
||
minetest.dig_node(above)
|
||
end
|
||
end
|
||
end
|
||
end
|
||
})
|
||
|
||
-- Grass/mycelium death in darkness
|
||
minetest.register_abm({
|
||
label = "Grass Block / Mycelium in darkness",
|
||
nodenames = {"group:spreading_dirt_type"},
|
||
interval = 8,
|
||
chance = 50,
|
||
catch_up = false,
|
||
action = function(pos, node)
|
||
local above = {x = pos.x, y = pos.y + 1, z = pos.z}
|
||
local name = minetest.get_node(above).name
|
||
-- Kill grass/mycelium when below opaque block or liquid
|
||
if name ~= "ignore" and (minetest.get_item_group(name, "opaque") == 1 or minetest.get_item_group(name, "liquid") ~= 0) then
|
||
minetest.set_node(pos, {name = "mcl_core:dirt"})
|
||
end
|
||
end
|
||
})
|
||
|
||
-- Turn Grass Path and similar nodes to Dirt if a solid node is placed above it
|
||
minetest.register_on_placenode(function(pos, newnode, placer, oldnode, itemstack, pointed_thing)
|
||
if minetest.get_item_group(newnode.name, "solid") ~= 0 then
|
||
local below = {x=pos.x, y=pos.y-1, z=pos.z}
|
||
local belownode = minetest.get_node(below)
|
||
if minetest.get_item_group(belownode.name, "dirtifies_below_solid") == 1 then
|
||
minetest.set_node(below, {name="mcl_core:dirt"})
|
||
end
|
||
end
|
||
end)
|
||
|
||
minetest.register_abm({
|
||
label = "Turn Grass Path below solid block into Dirt",
|
||
nodenames = {"mcl_core:grass_path"},
|
||
neighbors = {"group:solid"},
|
||
interval = 8,
|
||
chance = 50,
|
||
action = function(pos, node)
|
||
local above = {x = pos.x, y = pos.y + 1, z = pos.z}
|
||
local name = minetest.get_node(above).name
|
||
local nodedef = minetest.registered_nodes[name]
|
||
if name ~= "ignore" and nodedef and (nodedef.groups and nodedef.groups.solid) then
|
||
minetest.set_node(pos, {name = "mcl_core:dirt"})
|
||
end
|
||
end,
|
||
})
|
||
|
||
--------------------------
|
||
-- Try generate tree ---
|
||
--------------------------
|
||
local treelight = 9
|
||
|
||
local sapling_grow_action = function(tree_id, soil_needed, one_by_one, two_by_two, sapling)
|
||
return function(pos)
|
||
-- Checks if the sapling at pos has enough light and the correct soil
|
||
local sapling_is_growable = function(pos)
|
||
local light = minetest.get_node_light(pos)
|
||
local soilnode = minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z})
|
||
local soiltype = minetest.get_item_group(soilnode.name, "soil_sapling")
|
||
return soiltype >= soil_needed and light and light >= treelight
|
||
end
|
||
if sapling_is_growable(pos) then
|
||
-- Increase and check growth stage
|
||
local meta = minetest.get_meta(pos)
|
||
local stage = meta:get_int("stage")
|
||
if stage == nil then stage = 0 end
|
||
stage = stage + 1
|
||
if stage >= 3 then
|
||
-- This sapling grows in a special way when there are 4 saplings in a 2×2 pattern
|
||
if two_by_two then
|
||
-- Check 8 surrounding saplings and try to find a 2×2 pattern
|
||
local is_sapling = function(pos, sapling)
|
||
return minetest.get_node(pos).name == sapling
|
||
end
|
||
local p2 = {x=pos.x+1, y=pos.y, z=pos.z}
|
||
local p3 = {x=pos.x, y=pos.y, z=pos.z-1}
|
||
local p4 = {x=pos.x+1, y=pos.y, z=pos.z-1}
|
||
local p5 = {x=pos.x-1, y=pos.y, z=pos.z-1}
|
||
local p6 = {x=pos.x-1, y=pos.y, z=pos.z}
|
||
local p7 = {x=pos.x-1, y=pos.y, z=pos.z+1}
|
||
local p8 = {x=pos.x, y=pos.y, z=pos.z+1}
|
||
local p9 = {x=pos.x+1, y=pos.y, z=pos.z+1}
|
||
local s2 = is_sapling(p2, sapling)
|
||
local s3 = is_sapling(p3, sapling)
|
||
local s4 = is_sapling(p4, sapling)
|
||
local s5 = is_sapling(p5, sapling)
|
||
local s6 = is_sapling(p6, sapling)
|
||
local s7 = is_sapling(p7, sapling)
|
||
local s8 = is_sapling(p8, sapling)
|
||
local s9 = is_sapling(p9, sapling)
|
||
-- In a 9×9 field there are 4 possible 2×2 squares. We check them all.
|
||
if s2 and s3 and s4 then
|
||
-- Success: Remove saplings and place tree
|
||
minetest.remove_node(pos, {name="air"})
|
||
minetest.remove_node(p2, {name="air"})
|
||
minetest.remove_node(p3, {name="air"})
|
||
minetest.remove_node(p4, {name="air"})
|
||
mcl_core.generate_tree(pos, tree_id, true)
|
||
return
|
||
elseif s3 and s5 and s6 then
|
||
minetest.remove_node(pos, {name="air"})
|
||
minetest.remove_node(p3, {name="air"})
|
||
minetest.remove_node(p5, {name="air"})
|
||
minetest.remove_node(p6, {name="air"})
|
||
mcl_core.generate_tree(p6, tree_id, true)
|
||
return
|
||
elseif s6 and s7 and s8 then
|
||
minetest.remove_node(pos, {name="air"})
|
||
minetest.remove_node(p6, {name="air"})
|
||
minetest.remove_node(p7, {name="air"})
|
||
minetest.remove_node(p8, {name="air"})
|
||
mcl_core.generate_tree(p7, tree_id, true)
|
||
return
|
||
elseif s2 and s8 and s9 then
|
||
minetest.remove_node(pos, {name="air"})
|
||
minetest.remove_node(p2, {name="air"})
|
||
minetest.remove_node(p8, {name="air"})
|
||
minetest.remove_node(p9, {name="air"})
|
||
mcl_core.generate_tree(p8, tree_id, true)
|
||
return
|
||
end
|
||
end
|
||
-- If this sapling can grow alone
|
||
if one_by_one then
|
||
-- Single sapling
|
||
minetest.set_node(pos, {name="air"})
|
||
mcl_core.generate_tree(pos, tree_id)
|
||
return
|
||
end
|
||
else
|
||
meta:set_int("stage", stage)
|
||
end
|
||
end
|
||
end
|
||
end
|
||
|
||
local grow_oak = sapling_grow_action(1, 1, true, false)
|
||
local grow_dark_oak = sapling_grow_action(2, 2, false, true, "mcl_core:darksapling")
|
||
local grow_jungle_tree = sapling_grow_action(5, 1, true, true, "mcl_core:junglesapling")
|
||
local grow_acacia = sapling_grow_action(4, 2, true, false)
|
||
local grow_spruce = sapling_grow_action(3, 1, true, true, "mcl_core:sprucesapling")
|
||
local grow_birch = sapling_grow_action(6, 1, true, false)
|
||
|
||
-- Attempts to grow the sapling at the specified position
|
||
-- pos: Position
|
||
-- node: Node table of the node at this position, from minetest.get_node
|
||
-- Returns true on success and false on failure
|
||
mcl_core.grow_sapling = function(pos, node)
|
||
local grow
|
||
if node.name == "mcl_core:sapling" then
|
||
grow = grow_oak
|
||
elseif node.name == "mcl_core:darksapling" then
|
||
grow = grow_dark_oak
|
||
elseif node.name == "mcl_core:junglesapling" then
|
||
grow = grow_jungle_tree
|
||
elseif node.name == "mcl_core:acaciasapling" then
|
||
grow = grow_acacia
|
||
elseif node.name == "mcl_core:sprucesapling" then
|
||
grow = grow_spruce
|
||
elseif node.name == "mcl_core:birchsapling" then
|
||
grow = grow_birch
|
||
end
|
||
if grow then
|
||
grow(pos)
|
||
return true
|
||
else
|
||
return false
|
||
end
|
||
end
|
||
|
||
-- TODO: Use better tree models for everything
|
||
-- TODO: Support 2×2 saplings
|
||
|
||
-- Oak tree
|
||
minetest.register_abm({
|
||
label = "Oak tree growth",
|
||
nodenames = {"mcl_core:sapling"},
|
||
neighbors = {"group:soil_sapling"},
|
||
interval = 25,
|
||
chance = 2,
|
||
action = grow_oak,
|
||
})
|
||
|
||
-- Dark oak tree
|
||
minetest.register_abm({
|
||
label = "Dark oak tree growth",
|
||
nodenames = {"mcl_core:darksapling"},
|
||
neighbors = {"group:soil_sapling"},
|
||
interval = 25,
|
||
chance = 2,
|
||
action = grow_dark_oak,
|
||
})
|
||
|
||
-- Jungle Tree
|
||
minetest.register_abm({
|
||
label = "Jungle tree growth",
|
||
nodenames = {"mcl_core:junglesapling"},
|
||
neighbors = {"group:soil_sapling"},
|
||
interval = 25,
|
||
chance = 2,
|
||
action = grow_jungle_tree,
|
||
})
|
||
|
||
-- Spruce tree
|
||
minetest.register_abm({
|
||
label = "Spruce tree growth",
|
||
nodenames = {"mcl_core:sprucesapling"},
|
||
neighbors = {"group:soil_sapling"},
|
||
interval = 25,
|
||
chance = 2,
|
||
action = grow_spruce
|
||
})
|
||
|
||
-- Birch tree
|
||
minetest.register_abm({
|
||
label = "Birch tree growth",
|
||
nodenames = {"mcl_core:birchsapling"},
|
||
neighbors = {"group:soil_sapling"},
|
||
interval = 25,
|
||
chance = 2,
|
||
action = grow_birch,
|
||
})
|
||
|
||
-- Acacia tree
|
||
minetest.register_abm({
|
||
label = "Acacia tree growth",
|
||
nodenames = {"mcl_core:acaciasapling"},
|
||
neighbors = {"group:soil_sapling"},
|
||
interval = 20,
|
||
chance = 2,
|
||
action = grow_acacia,
|
||
})
|
||
|
||
---------------------
|
||
-- Vine generating --
|
||
---------------------
|
||
minetest.register_abm({
|
||
label = "Vines growth",
|
||
nodenames = {"mcl_core:vine"},
|
||
interval = 47,
|
||
chance = 4,
|
||
action = function(pos, node, active_object_count, active_object_count_wider)
|
||
|
||
-- First of all, check if we are even supported, otherwise, let's die!
|
||
if not mcl_core.check_vines_supported(pos, node) then
|
||
minetest.remove_node(pos)
|
||
core.check_for_falling(pos)
|
||
return
|
||
end
|
||
|
||
local neighbor_offsets = {
|
||
{ x=1, y=0, z=0 },
|
||
{ x=-1, y=0, z=0 },
|
||
{ x=0, y=0, z=1 },
|
||
{ x=0, y=0, z=-1 },
|
||
}
|
||
|
||
-- Add vines below pos (if empty)
|
||
local spread_down = function(pos, node)
|
||
local down = vector.add(pos, {x=0, y=-1, z=0})
|
||
if minetest.get_node(down).name == "air" then
|
||
minetest.add_node(down, {name = "mcl_core:vine", param2 = node.param2})
|
||
end
|
||
end
|
||
|
||
-- Add vines above pos if it is backed up
|
||
local spread_up = function(pos, node)
|
||
local up = vector.add(pos, {x=0, y=1, z=0})
|
||
if minetest.get_node(up).name == "air" then
|
||
local backup_dir = minetest.facedir_to_dir(node.param2)
|
||
local backup = vector.add(up, backup_dir)
|
||
local backupnodename = minetest.get_node(backup).name
|
||
|
||
-- Check if the block above is supported
|
||
if mcl_core.supports_vines(backupnodename) then
|
||
minetest.add_node(up, {name = "mcl_core:vine", param2 = node.param2})
|
||
end
|
||
end
|
||
end
|
||
|
||
-- Try to spread vines from the 4 horizontal neighbors
|
||
local spread_neighbors = function(pos, node, spread_dir)
|
||
for n=1, #neighbor_offsets do
|
||
if math.random(1,2) == 1 then
|
||
local neighbor = vector.add(pos, neighbor_offsets[n])
|
||
local neighbornode = minetest.get_node(neighbor)
|
||
if neighbornode.name == "mcl_core:vine" then
|
||
if spread_dir == "up" then
|
||
spread_up(neighbor, neighbornode)
|
||
elseif spread_dir == "down" then
|
||
spread_down(neighbor, neighbornode)
|
||
end
|
||
end
|
||
end
|
||
end
|
||
end
|
||
|
||
-- Spread down
|
||
local down = {x=pos.x, y=pos.y-1, z=pos.z}
|
||
local down_node = minetest.get_node(down)
|
||
if down_node.name == "air" then
|
||
spread_neighbors(pos, node, "down")
|
||
elseif down_node.name == "mcl_core:vine" then
|
||
spread_neighbors(down, down_node, "down")
|
||
end
|
||
|
||
-- Spread up
|
||
local up = {x=pos.x, y=pos.y+1, z=pos.z}
|
||
local up_node = minetest.get_node(up)
|
||
if up_node.name == "air" then
|
||
local vines_in_area = minetest.find_nodes_in_area({x=pos.x-4, y=pos.y-1, z=pos.z-4}, {x=pos.x+4, y=pos.y+1, z=pos.z+4}, "mcl_core:vine")
|
||
-- Less then 4 vines blocks around the ticked vines block (remember the ticked block is counted by above function as well)
|
||
if #vines_in_area < 5 then
|
||
spread_neighbors(pos, node, "up")
|
||
end
|
||
end
|
||
|
||
-- TODO: Spread horizontally
|
||
|
||
end
|
||
})
|
||
|
||
-- Returns true of the node supports vines
|
||
mcl_core.supports_vines = function(nodename)
|
||
local def = minetest.registered_nodes[nodename]
|
||
-- Rules: 1) walkable 2) full cube
|
||
return def.walkable and
|
||
(def.node_box == nil or def.node_box.type == "regular") and
|
||
(def.collision_box == nil or def.collision_box.type == "regular")
|
||
end
|
||
|
||
-- Leaf Decay
|
||
|
||
-- To enable leaf decay for a node, add it to the "leafdecay" group.
|
||
--
|
||
-- The rating of the group determines how far from a node in the group "tree"
|
||
-- the node can be without decaying.
|
||
--
|
||
-- If param2 of the node is ~= 0, the node will always be preserved. Thus, if
|
||
-- the player places a node of that kind, you will want to set param2=1 or so.
|
||
--
|
||
|
||
mcl_core.leafdecay_trunk_cache = {}
|
||
mcl_core.leafdecay_enable_cache = true
|
||
-- Spread the load of finding trunks
|
||
mcl_core.leafdecay_trunk_find_allow_accumulator = 0
|
||
|
||
minetest.register_globalstep(function(dtime)
|
||
local finds_per_second = 5000
|
||
mcl_core.leafdecay_trunk_find_allow_accumulator =
|
||
math.floor(dtime * finds_per_second)
|
||
end)
|
||
|
||
minetest.register_abm({
|
||
label = "Leaf decay",
|
||
nodenames = {"group:leafdecay"},
|
||
neighbors = {"air", "group:liquid"},
|
||
-- A low interval and a high inverse chance spreads the load
|
||
interval = 2,
|
||
chance = 5,
|
||
|
||
action = function(p0, node, _, _)
|
||
local do_preserve = false
|
||
local d = minetest.registered_nodes[node.name].groups.leafdecay
|
||
if not d or d == 0 then
|
||
return
|
||
end
|
||
local n0 = minetest.get_node(p0)
|
||
if n0.param2 ~= 0 then
|
||
-- Prevent leafdecay for player-placed leaves.
|
||
-- param2 is set to 1 after it was placed by the player
|
||
return
|
||
end
|
||
local p0_hash = nil
|
||
if mcl_core.leafdecay_enable_cache then
|
||
p0_hash = minetest.hash_node_position(p0)
|
||
local trunkp = mcl_core.leafdecay_trunk_cache[p0_hash]
|
||
if trunkp then
|
||
local n = minetest.get_node(trunkp)
|
||
local reg = minetest.registered_nodes[n.name]
|
||
-- Assume ignore is a trunk, to make the thing work at the border of the active area
|
||
if n.name == "ignore" or (reg and reg.groups.tree and reg.groups.tree ~= 0) then
|
||
return
|
||
end
|
||
-- Cache is invalid
|
||
table.remove(mcl_core.leafdecay_trunk_cache, p0_hash)
|
||
end
|
||
end
|
||
if mcl_core.leafdecay_trunk_find_allow_accumulator <= 0 then
|
||
return
|
||
end
|
||
mcl_core.leafdecay_trunk_find_allow_accumulator =
|
||
mcl_core.leafdecay_trunk_find_allow_accumulator - 1
|
||
-- Assume ignore is a trunk, to make the thing work at the border of the active area
|
||
local p1 = minetest.find_node_near(p0, d, {"ignore", "group:tree"})
|
||
if p1 then
|
||
do_preserve = true
|
||
if mcl_core.leafdecay_enable_cache then
|
||
-- Cache the trunk
|
||
mcl_core.leafdecay_trunk_cache[p0_hash] = p1
|
||
end
|
||
end
|
||
if not do_preserve then
|
||
-- Drop stuff other than the node itself
|
||
local itemstacks = minetest.get_node_drops(n0.name)
|
||
for _, itemname in ipairs(itemstacks) do
|
||
local p_drop = {
|
||
x = p0.x - 0.5 + math.random(),
|
||
y = p0.y - 0.5 + math.random(),
|
||
z = p0.z - 0.5 + math.random(),
|
||
}
|
||
minetest.add_item(p_drop, itemname)
|
||
end
|
||
-- Remove node
|
||
minetest.remove_node(p0)
|
||
core.check_for_falling(p0)
|
||
|
||
-- Kill depending vines immediately to skip the vines decay delay
|
||
local surround = {
|
||
{ x = 0, y = 0, z = -1 },
|
||
{ x = 0, y = 0, z = 1 },
|
||
{ x = -1, y = 0, z = 0 },
|
||
{ x = 1, y = 0, z = 0 },
|
||
{ x = 0, y = -1, z = -1 },
|
||
}
|
||
for s=1, #surround do
|
||
local spos = vector.add(p0, surround[s])
|
||
local maybe_vine = minetest.get_node(spos)
|
||
local surround_inverse = vector.multiply(surround[s], -1)
|
||
if maybe_vine.name == "mcl_core:vine" and (not mcl_core.check_vines_supported(spos, maybe_vine)) then
|
||
minetest.remove_node(spos)
|
||
core.check_for_falling(spos)
|
||
end
|
||
end
|
||
end
|
||
end
|
||
})
|
||
|
||
-- Remove vines which are not supported by anything, similar to leaf decay.
|
||
--[[ TODO: Vines are supposed to die immediately when they supporting block is destroyed.
|
||
But doing this in Minetest would be too complicated / hacky. This vines decay is a simple
|
||
way to make sure that all floating vines are destroyed eventually. ]]
|
||
minetest.register_abm({
|
||
label = "Vines decay",
|
||
nodenames = {"mcl_core:vine"},
|
||
neighbors = {"air"},
|
||
-- A low interval and a high inverse chance spreads the load
|
||
interval = 4,
|
||
chance = 8,
|
||
action = function(p0, node, _, _)
|
||
if not mcl_core.check_vines_supported(p0, node) then
|
||
-- Vines must die!
|
||
minetest.remove_node(p0)
|
||
-- Just in case a falling node happens to float above vines
|
||
core.check_for_falling(p0)
|
||
end
|
||
end
|
||
})
|
||
|
||
--[[ Call this for vines nodes only.
|
||
Given the pos and node of a vines node, this returns true if the vines are supported
|
||
and false if the vines are currently floating.
|
||
Vines are considered “supported” if they face a walkable+solid block or “hang” from a vines node above. ]]
|
||
function mcl_core.check_vines_supported(pos, node)
|
||
local supported = false
|
||
local dir = minetest.wallmounted_to_dir(node.param2)
|
||
local pos1 = vector.add(pos, dir)
|
||
local node_neighbor = minetest.get_node(pos1)
|
||
-- Check if vines are attached to a solid block.
|
||
-- If ignore, we assume its solid.
|
||
if node_neighbor.name == "ignore" or mcl_core.supports_vines(node_neighbor.name) then
|
||
supported = true
|
||
elseif dir.y == 0 then
|
||
-- Vines are not attached, now we check if the vines are “hanging” below another vines block
|
||
-- of equal orientation.
|
||
local pos2 = vector.add(pos, {x=0, y=1, z=0})
|
||
local node2 = minetest.get_node(pos2)
|
||
-- Again, ignore means we assume its supported
|
||
if node2.name == "ignore" or (node2.name == "mcl_core:vine" and node2.param2 == node.param2) then
|
||
supported = true
|
||
end
|
||
end
|
||
return supported
|
||
end
|
||
|
||
---- FUNCTIONS FOR SNOWED NODES ----
|
||
-- These are nodes which change their appearence when they are below a snow cover
|
||
-- and turn back into “normal” when the snow cover is removed.
|
||
|
||
-- Registers a snowed variant of a node (e.g. grass block, podzol, mycelium).
|
||
-- * itemstring_snowed: Itemstring of the snowed node to add
|
||
-- * itemstring_clear: Itemstring of the original “clear” node without snow
|
||
-- * tiles: Optional custom tiles
|
||
-- * sounds: Optional custom sounds
|
||
--
|
||
-- The snowable nodes also MUST have _mcl_snowed defined to contain the name
|
||
-- of the snowed node.
|
||
mcl_core.register_snowed_node = function(itemstring_snowed, itemstring_clear, tiles, sounds)
|
||
local def = table.copy(minetest.registered_nodes[itemstring_clear])
|
||
-- Just some group clearing
|
||
def.description = nil
|
||
def._doc_items_longdesc = nil
|
||
def._doc_items_usagehelp = nil
|
||
def._doc_items_create_entry = false
|
||
def.groups.not_in_creative_inventory = 1
|
||
|
||
-- Enderman must never take this because this block is supposed to be always buried below snow.
|
||
def.groups.enderman_takable = nil
|
||
|
||
-- Snowed blocks never spread
|
||
def.groups.spreading_dirt_type = nil
|
||
|
||
-- Add the clear node to the item definition for easy lookup
|
||
def._mcl_snowless = itemstring_clear
|
||
|
||
-- Note: _mcl_snowed must be added to the clear node manually!
|
||
|
||
if not tiles then
|
||
def.tiles = {"default_snow.png", "default_dirt.png", "mcl_core_grass_side_snowed.png"}
|
||
else
|
||
def.tiles = tiles
|
||
end
|
||
if not sounds then
|
||
def.sounds = mcl_sounds.node_sound_dirt_defaults({
|
||
footstep = { name = "pedology_snow_soft_footstep", gain = 0.5 }
|
||
})
|
||
else
|
||
def.sounds = sounds
|
||
end
|
||
|
||
-- Register stuff
|
||
minetest.register_node(itemstring_snowed, def)
|
||
|
||
if minetest.get_modpath("doc") then
|
||
doc.add_entry_alias("nodes", itemstring_clear, "nodes", itemstring_snowed)
|
||
end
|
||
end
|
||
|
||
-- Reverts a snowed dirtlike node at pos to its original snow-less form.
|
||
-- This function assumes there is no snow cover node above. This function
|
||
-- MUST NOT be called if there is a snow cover node above pos.
|
||
mcl_core.clear_snow_dirt = function(pos, node)
|
||
local def = minetest.registered_nodes[node.name]
|
||
if def._mcl_snowless then
|
||
minetest.swap_node(pos, {name = def._mcl_snowless})
|
||
end
|
||
end
|
||
|
||
---- [[[[[ Functions for snowable nodes (nodes that can become snowed). ]]]]] ----
|
||
-- Always add these for snowable nodes.
|
||
|
||
-- on_construct
|
||
-- Makes constructed snowable node snowed if placed below a snow cover node.
|
||
mcl_core.on_snowable_construct = function(pos)
|
||
-- Myself
|
||
local node = minetest.get_node(pos)
|
||
|
||
-- Above
|
||
local apos = {x=pos.x, y=pos.y+1, z=pos.z}
|
||
local anode = minetest.get_node(apos)
|
||
|
||
-- Make snowed if needed
|
||
if minetest.get_item_group(anode.name, "snow_cover") == 1 then
|
||
local def = minetest.registered_nodes[node.name]
|
||
if def._mcl_snowed then
|
||
minetest.swap_node(pos, {name = def._mcl_snowed})
|
||
end
|
||
end
|
||
end
|
||
|
||
|
||
---- [[[[[ Functions for snow cover nodes. ]]]]] ----
|
||
|
||
-- A snow cover node is a node which turns a snowed dirtlike --
|
||
-- node into its snowed form while it is placed above.
|
||
-- MCL2's snow cover nodes are Top Snow (mcl_core:snow) and Snow (mcl_core:snowblock).
|
||
|
||
-- Always add the following functions to snow cover nodes:
|
||
|
||
-- on_construct
|
||
-- Makes snowable node below snowed.
|
||
mcl_core.on_snow_construct = function(pos)
|
||
local npos = {x=pos.x, y=pos.y-1, z=pos.z}
|
||
local node = minetest.get_node(npos)
|
||
local def = minetest.registered_nodes[node.name]
|
||
if def._mcl_snowed then
|
||
minetest.swap_node(npos, {name = def._mcl_snowed})
|
||
end
|
||
end
|
||
-- after_destruct
|
||
-- Clears snowed dirtlike node below.
|
||
mcl_core.after_snow_destruct = function(pos)
|
||
local nn = minetest.get_node(pos).name
|
||
-- No-op if snow was replaced with snow
|
||
if minetest.get_item_group(nn, "snow_cover") == 1 then
|
||
return
|
||
end
|
||
local npos = {x=pos.x, y=pos.y-1, z=pos.z}
|
||
local node = minetest.get_node(npos)
|
||
mcl_core.clear_snow_dirt(npos, node)
|
||
end
|
||
|