lib_materials/lib_materials_rivers.lua

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2019-09-04 18:59:44 +02:00
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
})