125 lines
3.1 KiB
Lua
125 lines
3.1 KiB
Lua
|
|
|
|
|
|
local neighbors_p = {
|
|
{x=1},{x=-1},
|
|
{z=1},{z=-1}
|
|
}
|
|
|
|
local neighbors_p2 = {
|
|
{x=2},{x=-2},
|
|
{z=2},{z=-2}
|
|
}
|
|
|
|
local neighbors_d = {
|
|
{x=1,z=1},
|
|
{x=1,z=-1},
|
|
{x=-1,z=1},
|
|
{x=-1,z=-1}
|
|
}
|
|
|
|
local pos_shift = function(pos,vec)
|
|
vec.x=vec.x or 0
|
|
vec.y=vec.y or 0
|
|
vec.z=vec.z or 0
|
|
return {x=pos.x+vec.x,
|
|
y=pos.y+vec.y,
|
|
z=pos.z+vec.z}
|
|
end
|
|
|
|
local get_nodename_off = function(pos,vec)
|
|
return minetest.get_node(pos_shift(pos,vec)).name
|
|
end
|
|
|
|
local get_neighbors_walkable = function(pos)
|
|
local ret = 0
|
|
for _,v in ipairs(neighbors_p) do
|
|
if minetest.registered_nodes[get_nodename_off(pos,v)].walkable then
|
|
ret = ret+1
|
|
end
|
|
end
|
|
return ret
|
|
end
|
|
|
|
minetest.register_abm({
|
|
label="Erosion_crumb",
|
|
nodenames = {"group:crumbly","group:snowy"},
|
|
neighbors = {"lib_materials:liquid_water_rushing_flowing", "lib_materials:liquid_water_rushing_source"},
|
|
interval = 0.2,
|
|
chance = 1,
|
|
catch_up = false,
|
|
action = function(pos, node, active_object_count, active_object_count_wider)
|
|
|
|
local node1up = get_nodename_off(pos,{y=1})
|
|
if minetest.registered_nodes[node1up].drawtype == "flowingliquid" then
|
|
if get_neighbors_walkable(pos) < 4 then
|
|
minetest.remove_node(pos)
|
|
for _,v in ipairs(neighbors_p) do
|
|
local node = get_nodename_off(pos,v)
|
|
local v2=table.copy(v)
|
|
v2.y = v2.y+1
|
|
local node2 = get_nodename_off(pos,v2)
|
|
if (minetest.get_item_group(node,"crumbly")>0 or
|
|
minetest.get_item_group(node,"snowy")>0) and not
|
|
minetest.registered_nodes[node2].walkable then
|
|
minetest.remove_node(pos_shift(pos,v))
|
|
minetest.remove_node(pos_shift(pos,v2))
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
})
|
|
|
|
minetest.register_abm({
|
|
label="Erosion_stone",
|
|
nodenames = {"group:stone","default:ice"},
|
|
neighbors = {"lib_materials:liquid_water_rushing_source"},
|
|
interval = 1,
|
|
chance = 2,
|
|
catch_up = false,
|
|
action = function(pos, node, active_object_count, active_object_count_wider)
|
|
|
|
local node2up = minetest.get_node(pos_shift(pos,{y=2}))
|
|
local node1up = minetest.get_node(pos_shift(pos,{y=1}))
|
|
|
|
if pos.y % 4 ~= 0 then
|
|
if minetest.registered_nodes[node1up.name].drawtype == "liquid" and
|
|
get_neighbors_walkable(pos) <= 2 then
|
|
minetest.remove_node(pos)
|
|
return
|
|
end
|
|
end
|
|
|
|
if minetest.registered_nodes[node2up.name].drawtype ~= "liquid" and
|
|
minetest.registered_nodes[node1up.name].drawtype == "liquid" then
|
|
local node
|
|
local vec
|
|
|
|
for _,v in ipairs(neighbors_p) do
|
|
node = minetest.get_node(pos_shift(pos,v))
|
|
if minetest.registered_nodes[node.name].drawtype == "liquid" then
|
|
vec = {x=v.x*-1,y=v.y+1,z=v.z*-1}
|
|
node = minetest.get_node(pos_shift(pos,vec))
|
|
if minetest.registered_nodes[node.name].walkable then
|
|
minetest.remove_node(pos)
|
|
return
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
})
|
|
|
|
minetest.register_abm({
|
|
label="Erosion_flora",
|
|
nodenames = {"group:attached_node"},
|
|
neighbors = {"lib_materials:liquid_water_rushing_flowing", "lib_materials:liquid_water_rushing_source"},
|
|
interval = 0.2,
|
|
chance = 1,
|
|
catch_up = false,
|
|
action = function(pos, node, active_object_count, active_object_count_wider)
|
|
minetest.remove_node(pos)
|
|
end
|
|
})
|