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biome_lib
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Code Issues Releases Wiki Activity

Split code and tidy up 

Split to growth.lua and search_functions.lua
New function populate_single_surface for a single position check
Use 'return' to reduce indent levels
This commit is contained in:
SmallJoker 2019-01-02 20:35:39 +01:00
parent f056d6d76e
commit b7d69a8487
3 changed files with 361 additions and 301 deletions
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78
growth.lua Normal file
View File

@ -0,0 +1,78 @@
-- The growing ABM
function biome_lib:grow_plants(opts)
local options = opts
options.height_limit = options.height_limit or 5
options.ground_nodes = options.ground_nodes or { "default:dirt_with_grass" }
options.grow_nodes = options.grow_nodes or { "default:dirt_with_grass" }
options.seed_diff = options.seed_diff or 0
local n
if type(options.grow_plant) == "table" then
n = "multi: "..options.grow_plant[1]..", ..."
else
n = options.grow_plant
end
options.label = options.label or "biome_lib grow_plants(): "..n
if options.grow_delay*time_scale >= 1 then
options.interval = options.grow_delay*time_scale
else
options.interval = 1
end
minetest.register_abm({
nodenames = { options.grow_plant },
interval = options.interval,
chance = options.grow_chance,
label = options.label,
action = function(pos, node, active_object_count, active_object_count_wider)
local p_top = {x=pos.x, y=pos.y+1, z=pos.z}
local p_bot = {x=pos.x, y=pos.y-1, z=pos.z}
local n_top = minetest.get_node(p_top)
local n_bot = minetest.get_node(p_bot)
local root_node = minetest.get_node({x=pos.x, y=pos.y-options.height_limit, z=pos.z})
local walldir = nil
if options.need_wall and options.verticals_list then
walldir = biome_lib:find_adjacent_wall(p_top, options.verticals_list, options.choose_random_wall)
end
if (n_top.name == "air" or n_top.name == "default:snow")
and (not options.need_wall or (options.need_wall and walldir)) then
-- corner case for changing short junglegrass
-- to dry shrub in desert
if n_bot.name == options.dry_early_node and options.grow_plant == "junglegrass:short" then
minetest.swap_node(pos, { name = "default:dry_shrub" })
elseif options.grow_vertically and walldir then
if biome_lib:search_downward(pos, options.height_limit, options.ground_nodes) then
minetest.swap_node(p_top, { name = options.grow_plant, param2 = walldir})
end
elseif not options.grow_result and not options.grow_function then
minetest.swap_node(pos, biome_lib.air)
else
biome_lib:replace_object(pos, options.grow_result, options.grow_function, options.facedir, options.seed_diff)
end
end
end
})
end
-- spawn_tree() on generate is routed through here so that other mods can hook
-- into it.
function biome_lib:generate_tree(pos, nodes_or_function_or_model)
minetest.spawn_tree(pos, nodes_or_function_or_model)
end
-- and this one's for the call used in the growing code
function biome_lib:grow_tree(pos, nodes_or_function_or_model)
minetest.spawn_tree(pos, nodes_or_function_or_model)
end

531
init.lua
View File

@ -198,6 +198,88 @@ function biome_lib:register_generate_plant(biomedef, nodes_or_function_or_model)
end
end
-- Function to check whether a position matches the given biome definition
-- Returns true when the surface can be populated
local function populate_single_surface(biome, pos, perlin_fertile_area)
local p_top = { x = pos.x, y = pos.y + 1, z = pos.z }
local noise1 = perlin_fertile_area:get2d({x=pos.x, y=pos.z})
local noise2 = biome_lib.perlin_temperature:get2d({x=pos.x, y=pos.z})
local noise3 = biome_lib.perlin_humidity:get2d({x=pos.x+150, y=pos.z+50})
if math.random(1, 100) <= biome.rarity then
return
end
local pos_biome_ok = pos.y >= biome.min_elevation and pos.y <= biome.max_elevation
and noise1 > biome.plantlife_limit
and noise2 <= biome.temp_min and noise2 >= biome.temp_max
and noise3 <= biome.humidity_min and noise3 >= biome.humidity_max
if not pos_biome_ok then
return -- Y position mismatch, outside of biome
end
local biome_surfaces_string = dump(biome.surface)
local surface_ok = false
if not biome.depth then
local dest_node = minetest.get_node(pos)
if string.find(biome_surfaces_string, dest_node.name) then
surface_ok = true
else
if string.find(biome_surfaces_string, "group:") then
for j = 1, #biome.surface do
if string.find(biome.surface[j], "^group:")
and minetest.get_item_group(dest_node.name, biome.surface[j]) then
surface_ok = true
break
end
end
end
end
elseif not string.find(biome_surfaces_string,
minetest.get_node({ x = pos.x, y = pos.y-biome.depth-1, z = pos.z }).name) then
surface_ok = true
end
if not surface_ok then
return -- Surface does not match the given node group/name
end
if checkair and minetest.get_node(p_top).name ~= "air" then
return
end
if biome.below_nodes and
not string.find(dump(biome.below_nodes),
minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z}).name
) then
return -- Node below does not match
end
if biome.ncount and
#minetest.find_nodes_in_area(
{x=pos.x-1, y=pos.y, z=pos.z-1},
{x=pos.x+1, y=pos.y, z=pos.z+1},
biome.neighbors
) <= biome.ncount then
return -- Not enough similar biome nodes around
end
if biome.near_nodes and
#minetest.find_nodes_in_area(
{x=pos.x-biome.near_nodes_size, y=pos.y-biome.near_nodes_vertical, z=pos.z-biome.near_nodes_size},
{x=pos.x+biome.near_nodes_size, y=pos.y+biome.near_nodes_vertical, z=pos.z+biome.near_nodes_size},
biome.near_nodes
) < biome.near_nodes_count then
return -- Long distance neighbours do not match
end
-- Position fits into given biome
return true
end
function biome_lib:populate_surfaces(biome, nodes_or_function_or_model, snodes, checkair)
biome_lib:set_defaults(biome)
@ -208,47 +290,8 @@ function biome_lib:populate_surfaces(biome, nodes_or_function_or_model, snodes,
local perlin_fertile_area = minetest.get_perlin(biome.seed_diff, perlin_octaves, perlin_persistence, perlin_scale)
for i = 1, #snodes do
local pos = snodes[i]
local p_top = { x = pos.x, y = pos.y + 1, z = pos.z }
local noise1 = perlin_fertile_area:get2d({x=pos.x, y=pos.z})
local noise2 = biome_lib.perlin_temperature:get2d({x=pos.x, y=pos.z})
local noise3 = biome_lib.perlin_humidity:get2d({x=pos.x+150, y=pos.z+50})
local biome_surfaces_string = dump(biome.surface)
local surface_ok = false
if not biome.depth then
local dest_node = minetest.get_node(pos)
if string.find(biome_surfaces_string, dest_node.name) then
surface_ok = true
else
if string.find(biome_surfaces_string, "group:") then
for j = 1, #biome.surface do
if string.find(biome.surface[j], "^group:")
and minetest.get_item_group(dest_node.name, biome.surface[j]) then
surface_ok = true
break
end
end
end
end
elseif not string.find(biome_surfaces_string, minetest.get_node({ x = pos.x, y = pos.y-biome.depth-1, z = pos.z }).name) then
surface_ok = true
end
if surface_ok
and pos.y >= biome.min_elevation
and pos.y <= biome.max_elevation
and noise1 > biome.plantlife_limit
and noise2 <= biome.temp_min
and noise2 >= biome.temp_max
and noise3 <= biome.humidity_min
and noise3 >= biome.humidity_max
and (not checkair or minetest.get_node(p_top).name == "air")
and (not biome.ncount or #(minetest.find_nodes_in_area({x=pos.x-1, y=pos.y, z=pos.z-1}, {x=pos.x+1, y=pos.y, z=pos.z+1}, biome.neighbors)) > biome.ncount)
and (not biome.near_nodes or #(minetest.find_nodes_in_area({x=pos.x-biome.near_nodes_size, y=pos.y-biome.near_nodes_vertical, z=pos.z-biome.near_nodes_size}, {x=pos.x+biome.near_nodes_size, y=pos.y+biome.near_nodes_vertical, z=pos.z+biome.near_nodes_size}, biome.near_nodes)) >= biome.near_nodes_count)
and math.random(1,100) > biome.rarity
and (not biome.below_nodes or string.find(dump(biome.below_nodes), minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z}).name) )
then
local pos = vector.new(snodes[i])
if populate_single_surface(biome, pos, perlin_fertile_area) then
in_biome_nodes[#in_biome_nodes + 1] = pos
end
end
@ -257,73 +300,77 @@ function biome_lib:populate_surfaces(biome, nodes_or_function_or_model, snodes,
local num_in_biome_nodes = #in_biome_nodes
if num_in_biome_nodes > 0 then
for i = 1, math.min(biome.max_count, num_in_biome_nodes) do
local tries = 0
local spawned = false
while tries < 2 and not spawned do
local pos = in_biome_nodes[math.random(1, num_in_biome_nodes)]
if biome.spawn_replace_node then
pos.y = pos.y-1
if num_in_biome_nodes == 0 then
return
end
for i = 1, math.min(biome.max_count, num_in_biome_nodes) do
local tries = 0
local spawned = false
while tries < 2 and not spawned do
local pos = in_biome_nodes[math.random(1, num_in_biome_nodes)]
if biome.spawn_replace_node then
pos.y = pos.y-1
end
local p_top = { x = pos.x, y = pos.y + 1, z = pos.z }
if not (biome.avoid_nodes and biome.avoid_radius
and minetest.find_node_near(p_top, biome.avoid_radius
+ math.random(-1.5,2), biome.avoid_nodes)) then
if biome.delete_above then
minetest.swap_node(p_top, biome_lib.air)
minetest.swap_node({x=p_top.x, y=p_top.y+1, z=p_top.z}, biome_lib.air)
end
local p_top = { x = pos.x, y = pos.y + 1, z = pos.z }
if not (biome.avoid_nodes and biome.avoid_radius and minetest.find_node_near(p_top, biome.avoid_radius + math.random(-1.5,2), biome.avoid_nodes)) then
if biome.delete_above then
minetest.swap_node(p_top, biome_lib.air)
minetest.swap_node({x=p_top.x, y=p_top.y+1, z=p_top.z}, biome_lib.air)
end
if biome.delete_above_surround then
minetest.swap_node({x=p_top.x-1, y=p_top.y, z=p_top.z}, biome_lib.air)
minetest.swap_node({x=p_top.x+1, y=p_top.y, z=p_top.z}, biome_lib.air)
minetest.swap_node({x=p_top.x, y=p_top.y, z=p_top.z-1}, biome_lib.air)
minetest.swap_node({x=p_top.x, y=p_top.y, z=p_top.z+1}, biome_lib.air)
if biome.delete_above_surround then
minetest.swap_node({x=p_top.x-1, y=p_top.y, z=p_top.z}, biome_lib.air)
minetest.swap_node({x=p_top.x+1, y=p_top.y, z=p_top.z}, biome_lib.air)
minetest.swap_node({x=p_top.x, y=p_top.y, z=p_top.z-1}, biome_lib.air)
minetest.swap_node({x=p_top.x, y=p_top.y, z=p_top.z+1}, biome_lib.air)
minetest.swap_node({x=p_top.x-1, y=p_top.y+1, z=p_top.z}, biome_lib.air)
minetest.swap_node({x=p_top.x+1, y=p_top.y+1, z=p_top.z}, biome_lib.air)
minetest.swap_node({x=p_top.x, y=p_top.y+1, z=p_top.z-1}, biome_lib.air)
minetest.swap_node({x=p_top.x, y=p_top.y+1, z=p_top.z+1}, biome_lib.air)
end
minetest.swap_node({x=p_top.x-1, y=p_top.y+1, z=p_top.z}, biome_lib.air)
minetest.swap_node({x=p_top.x+1, y=p_top.y+1, z=p_top.z}, biome_lib.air)
minetest.swap_node({x=p_top.x, y=p_top.y+1, z=p_top.z-1}, biome_lib.air)
minetest.swap_node({x=p_top.x, y=p_top.y+1, z=p_top.z+1}, biome_lib.air)
end
if biome.spawn_replace_node then
minetest.swap_node(pos, biome_lib.air)
end
if biome.spawn_replace_node then
minetest.swap_node(pos, biome_lib.air)
end
local objtype = type(nodes_or_function_or_model)
local objtype = type(nodes_or_function_or_model)
if objtype == "table" then
if nodes_or_function_or_model.axiom then
biome_lib:generate_tree(p_top, nodes_or_function_or_model)
spawned = true
else
local fdir = nil
if biome.random_facedir then
fdir = math.random(biome.random_facedir[1], biome.random_facedir[2])
end
minetest.swap_node(p_top, { name = nodes_or_function_or_model[math.random(#nodes_or_function_or_model)], param2 = fdir })
spawned = true
end
elseif objtype == "string" and
minetest.registered_nodes[nodes_or_function_or_model] then
if objtype == "table" then
if nodes_or_function_or_model.axiom then
biome_lib:generate_tree(p_top, nodes_or_function_or_model)
spawned = true
else
local fdir = nil
if biome.random_facedir then
fdir = math.random(biome.random_facedir[1], biome.random_facedir[2])
end
minetest.swap_node(p_top, { name = nodes_or_function_or_model, param2 = fdir })
minetest.swap_node(p_top, { name = nodes_or_function_or_model[math.random(#nodes_or_function_or_model)], param2 = fdir })
spawned = true
elseif objtype == "function" then
nodes_or_function_or_model(pos)
spawned = true
elseif objtype == "string" and pcall(loadstring(("return %s(...)"):
format(nodes_or_function_or_model)),pos) then
spawned = true
else
biome_lib:dbg("Warning: Ignored invalid definition for object "..dump(nodes_or_function_or_model).." that was pointed at {"..dump(pos).."}")
end
elseif objtype == "string" and
minetest.registered_nodes[nodes_or_function_or_model] then
local fdir = nil
if biome.random_facedir then
fdir = math.random(biome.random_facedir[1], biome.random_facedir[2])
end
minetest.swap_node(p_top, { name = nodes_or_function_or_model, param2 = fdir })
spawned = true
elseif objtype == "function" then
nodes_or_function_or_model(pos)
spawned = true
elseif objtype == "string" and pcall(loadstring(("return %s(...)"):
format(nodes_or_function_or_model)),pos) then
spawned = true
else
tries = tries + 1
biome_lib:dbg("Warning: Ignored invalid definition for object "..dump(nodes_or_function_or_model).." that was pointed at {"..dump(pos).."}")
end
else
tries = tries + 1
end
end
end
@ -333,51 +380,52 @@ end
-- a surface during the initial map read stage.
function biome_lib:generate_block_with_air_checking()
if #biome_lib.blocklist_aircheck > 0 then
if #biome_lib.blocklist_aircheck == 0 then
return
end
local minp = biome_lib.blocklist_aircheck[1][1]
local maxp = biome_lib.blocklist_aircheck[1][2]
local minp = biome_lib.blocklist_aircheck[1][1]
local maxp = biome_lib.blocklist_aircheck[1][2]
-- use the block hash as a unique key into the surface nodes
-- tables, so that we can write the tables thread-safely.
-- use the block hash as a unique key into the surface nodes
-- tables, so that we can write the tables thread-safely.
local blockhash = minetest.hash_node_position(minp)
local blockhash = minetest.hash_node_position(minp)
if not biome_lib.surface_nodes_aircheck.blockhash then
if not biome_lib.surface_nodes_aircheck.blockhash then
if type(minetest.find_nodes_in_area_under_air) == "function" then -- use newer API call
biome_lib.surface_nodes_aircheck.blockhash =
minetest.find_nodes_in_area_under_air(minp, maxp, biome_lib.surfaceslist_aircheck)
else
local search_area = minetest.find_nodes_in_area(minp, maxp, biome_lib.surfaceslist_aircheck)
if type(minetest.find_nodes_in_area_under_air) == "function" then -- use newer API call
biome_lib.surface_nodes_aircheck.blockhash =
minetest.find_nodes_in_area_under_air(minp, maxp, biome_lib.surfaceslist_aircheck)
else
local search_area = minetest.find_nodes_in_area(minp, maxp, biome_lib.surfaceslist_aircheck)
-- search the generated block for air-bounded surfaces the slow way.
-- search the generated block for air-bounded surfaces the slow way.
biome_lib.surface_nodes_aircheck.blockhash = {}
biome_lib.surface_nodes_aircheck.blockhash = {}
for i = 1, #search_area do
local pos = search_area[i]
local p_top = { x=pos.x, y=pos.y+1, z=pos.z }
if minetest.get_node(p_top).name == "air" then
biome_lib.surface_nodes_aircheck.blockhash[#biome_lib.surface_nodes_aircheck.blockhash + 1] = pos
end
for i = 1, #search_area do
local pos = search_area[i]
local p_top = { x=pos.x, y=pos.y+1, z=pos.z }
if minetest.get_node(p_top).name == "air" then
biome_lib.surface_nodes_aircheck.blockhash[#biome_lib.surface_nodes_aircheck.blockhash + 1] = pos
end
end
biome_lib.actioncount_aircheck.blockhash = 1
end
biome_lib.actioncount_aircheck.blockhash = 1
else
if biome_lib.actioncount_aircheck.blockhash <= #biome_lib.actionslist_aircheck then
-- [1] is biome, [2] is node/function/model
biome_lib:populate_surfaces(
biome_lib.actionslist_aircheck[biome_lib.actioncount_aircheck.blockhash][1],
biome_lib.actionslist_aircheck[biome_lib.actioncount_aircheck.blockhash][2],
biome_lib.surface_nodes_aircheck.blockhash, true)
biome_lib.actioncount_aircheck.blockhash = biome_lib.actioncount_aircheck.blockhash + 1
else
if biome_lib.actioncount_aircheck.blockhash <= #biome_lib.actionslist_aircheck then
-- [1] is biome, [2] is node/function/model
biome_lib:populate_surfaces(
biome_lib.actionslist_aircheck[biome_lib.actioncount_aircheck.blockhash][1],
biome_lib.actionslist_aircheck[biome_lib.actioncount_aircheck.blockhash][2],
biome_lib.surface_nodes_aircheck.blockhash, true)
biome_lib.actioncount_aircheck.blockhash = biome_lib.actioncount_aircheck.blockhash + 1
else
if biome_lib.surface_nodes_aircheck.blockhash then
table.remove(biome_lib.blocklist_aircheck, 1)
biome_lib.surface_nodes_aircheck.blockhash = nil
end
if biome_lib.surface_nodes_aircheck.blockhash then
table.remove(biome_lib.blocklist_aircheck, 1)
biome_lib.surface_nodes_aircheck.blockhash = nil
end
end
end
@ -387,33 +435,34 @@ end
-- checking for air during the initial map read stage.
function biome_lib:generate_block_no_aircheck()
if #biome_lib.blocklist_no_aircheck > 0 then
if #biome_lib.blocklist_no_aircheck == 0 then
return
end
local minp = biome_lib.blocklist_no_aircheck[1][1]
local maxp = biome_lib.blocklist_no_aircheck[1][2]
local minp = biome_lib.blocklist_no_aircheck[1][1]
local maxp = biome_lib.blocklist_no_aircheck[1][2]
local blockhash = minetest.hash_node_position(minp)
local blockhash = minetest.hash_node_position(minp)
if not biome_lib.surface_nodes_no_aircheck.blockhash then
if not biome_lib.surface_nodes_no_aircheck.blockhash then
-- directly read the block to be searched into the chunk cache
-- directly read the block to be searched into the chunk cache
biome_lib.surface_nodes_no_aircheck.blockhash =
minetest.find_nodes_in_area(minp, maxp, biome_lib.surfaceslist_no_aircheck)
biome_lib.actioncount_no_aircheck.blockhash = 1
biome_lib.surface_nodes_no_aircheck.blockhash =
minetest.find_nodes_in_area(minp, maxp, biome_lib.surfaceslist_no_aircheck)
biome_lib.actioncount_no_aircheck.blockhash = 1
else
if biome_lib.actioncount_no_aircheck.blockhash <= #biome_lib.actionslist_no_aircheck then
biome_lib:populate_surfaces(
biome_lib.actionslist_no_aircheck[biome_lib.actioncount_no_aircheck.blockhash][1],
biome_lib.actionslist_no_aircheck[biome_lib.actioncount_no_aircheck.blockhash][2],
biome_lib.surface_nodes_no_aircheck.blockhash, false)
biome_lib.actioncount_no_aircheck.blockhash = biome_lib.actioncount_no_aircheck.blockhash + 1
else
if biome_lib.actioncount_no_aircheck.blockhash <= #biome_lib.actionslist_no_aircheck then
biome_lib:populate_surfaces(
biome_lib.actionslist_no_aircheck[biome_lib.actioncount_no_aircheck.blockhash][1],
biome_lib.actionslist_no_aircheck[biome_lib.actioncount_no_aircheck.blockhash][2],
biome_lib.surface_nodes_no_aircheck.blockhash, false)
biome_lib.actioncount_no_aircheck.blockhash = biome_lib.actioncount_no_aircheck.blockhash + 1
else
if biome_lib.surface_nodes_no_aircheck.blockhash then
table.remove(biome_lib.blocklist_no_aircheck, 1)
biome_lib.surface_nodes_no_aircheck.blockhash = nil
end
if biome_lib.surface_nodes_no_aircheck.blockhash then
table.remove(biome_lib.blocklist_no_aircheck, 1)
biome_lib.surface_nodes_no_aircheck.blockhash = nil
end
end
end
@ -432,21 +481,23 @@ end)
-- "Play" them back, populating them with new stuff in the process
minetest.register_globalstep(function(dtime)
if dtime < 0.2 -- don't attempt to populate if lag is already too high
and math.random(100) <= biome_lib.queue_run_ratio
and (#biome_lib.blocklist_aircheck > 0 or #biome_lib.blocklist_no_aircheck > 0) then
biome_lib.globalstep_start_time = minetest.get_us_time()
biome_lib.globalstep_runtime = 0
while (#biome_lib.blocklist_aircheck > 0 or #biome_lib.blocklist_no_aircheck > 0)
and biome_lib.globalstep_runtime < 200000 do -- 0.2 seconds, in uS.
if #biome_lib.blocklist_aircheck > 0 then
biome_lib:generate_block_with_air_checking()
end
if #biome_lib.blocklist_no_aircheck > 0 then
biome_lib:generate_block_no_aircheck()
end
biome_lib.globalstep_runtime = minetest.get_us_time() - biome_lib.globalstep_start_time
if dtime >= 0.2 -- don't attempt to populate if lag is already too high
or math.random(100) > biome_lib.queue_run_ratio
or (#biome_lib.blocklist_aircheck == 0 and #biome_lib.blocklist_no_aircheck == 0) then
return
end
biome_lib.globalstep_start_time = minetest.get_us_time()
biome_lib.globalstep_runtime = 0
while (#biome_lib.blocklist_aircheck > 0 or #biome_lib.blocklist_no_aircheck > 0)
and biome_lib.globalstep_runtime < 200000 do -- 0.2 seconds, in uS.
if #biome_lib.blocklist_aircheck > 0 then
biome_lib:generate_block_with_air_checking()
end
if #biome_lib.blocklist_no_aircheck > 0 then
biome_lib:generate_block_no_aircheck()
end
biome_lib.globalstep_runtime = minetest.get_us_time() - biome_lib.globalstep_start_time
end
end)
@ -454,24 +505,26 @@ end)
-- to prevent unpopulated map areas
minetest.register_on_shutdown(function()
if #biome_lib.blocklist_aircheck > 0 then
print("[biome_lib] Stand by, playing out the rest of the aircheck mapblock log")
print("(there are "..#biome_lib.blocklist_aircheck.." entries)...")
while true do
biome_lib:generate_block_with_air_checking(0.1)
if #biome_lib.blocklist_aircheck == 0 then return end
end
if #biome_lib.blocklist_aircheck == 0 then
return
end
print("[biome_lib] Stand by, playing out the rest of the aircheck mapblock log")
print("(there are "..#biome_lib.blocklist_aircheck.." entries)...")
while #biome_lib.blocklist_aircheck > 0 do
biome_lib:generate_block_with_air_checking(0.1)
end
end)
minetest.register_on_shutdown(function()
if #biome_lib.blocklist_no_aircheck > 0 then
print("[biome_lib] Stand by, playing out the rest of the no-aircheck mapblock log")
print("(there are "..#biome_lib.blocklist_no_aircheck.." entries)...")
while true do
biome_lib:generate_block_no_aircheck(0.1)
if #biome_lib.blocklist_no_aircheck == 0 then return end
end
if #biome_lib.blocklist_aircheck == 0 then
return
end
print("[biome_lib] Stand by, playing out the rest of the no-aircheck mapblock log")
print("(there are "..#biome_lib.blocklist_no_aircheck.." entries)...")
while #biome_lib.blocklist_no_aircheck > 0 do
biome_lib:generate_block_no_aircheck(0.1)
end
end)
@ -581,71 +634,6 @@ function biome_lib:spawn_on_surfaces(sd,sp,sr,sc,ss,sa)
})
end
-- The growing ABM
function biome_lib:grow_plants(opts)
local options = opts
options.height_limit = options.height_limit or 5
options.ground_nodes = options.ground_nodes or { "default:dirt_with_grass" }
options.grow_nodes = options.grow_nodes or { "default:dirt_with_grass" }
options.seed_diff = options.seed_diff or 0
local n
if type(options.grow_plant) == "table" then
n = "multi: "..options.grow_plant[1]..", ..."
else
n = options.grow_plant
end
options.label = options.label or "biome_lib grow_plants(): "..n
if options.grow_delay*time_scale >= 1 then
options.interval = options.grow_delay*time_scale
else
options.interval = 1
end
minetest.register_abm({
nodenames = { options.grow_plant },
interval = options.interval,
chance = options.grow_chance,
label = options.label,
action = function(pos, node, active_object_count, active_object_count_wider)
local p_top = {x=pos.x, y=pos.y+1, z=pos.z}
local p_bot = {x=pos.x, y=pos.y-1, z=pos.z}
local n_top = minetest.get_node(p_top)
local n_bot = minetest.get_node(p_bot)
local root_node = minetest.get_node({x=pos.x, y=pos.y-options.height_limit, z=pos.z})
local walldir = nil
if options.need_wall and options.verticals_list then
walldir = biome_lib:find_adjacent_wall(p_top, options.verticals_list, options.choose_random_wall)
end
if (n_top.name == "air" or n_top.name == "default:snow")
and (not options.need_wall or (options.need_wall and walldir)) then
-- corner case for changing short junglegrass
-- to dry shrub in desert
if n_bot.name == options.dry_early_node and options.grow_plant == "junglegrass:short" then
minetest.swap_node(pos, { name = "default:dry_shrub" })
elseif options.grow_vertically and walldir then
if biome_lib:search_downward(pos, options.height_limit, options.ground_nodes) then
minetest.swap_node(p_top, { name = options.grow_plant, param2 = walldir})
end
elseif not options.grow_result and not options.grow_function then
minetest.swap_node(pos, biome_lib.air)
else
biome_lib:replace_object(pos, options.grow_result, options.grow_function, options.facedir, options.seed_diff)
end
end
end
})
end
-- Function to decide how to replace a plant - either grow it, replace it with
-- a tree, run a function, or die with an error.
@ -675,71 +663,12 @@ function biome_lib:replace_object(pos, replacement, grow_function, walldir, seed
end
end
-- function to decide if a node has a wall that's in verticals_list{}
-- returns wall direction of valid node, or nil if invalid.
function biome_lib:find_adjacent_wall(pos, verticals, randomflag)
local verts = dump(verticals)
if randomflag then
local walltab = {}
if string.find(verts, minetest.get_node({ x=pos.x-1, y=pos.y, z=pos.z }).name) then walltab[#walltab + 1] = 3 end
if string.find(verts, minetest.get_node({ x=pos.x+1, y=pos.y, z=pos.z }).name) then walltab[#walltab + 1] = 2 end
if string.find(verts, minetest.get_node({ x=pos.x , y=pos.y, z=pos.z-1 }).name) then walltab[#walltab + 1] = 5 end
if string.find(verts, minetest.get_node({ x=pos.x , y=pos.y, z=pos.z+1 }).name) then walltab[#walltab + 1] = 4 end
if #walltab > 0 then return walltab[math.random(1, #walltab)] end
dofile(biome_lib.modpath .. "/search_functions.lua")
dofile(biome_lib.modpath .. "/growth.lua")
else
if string.find(verts, minetest.get_node({ x=pos.x-1, y=pos.y, z=pos.z }).name) then return 3 end
if string.find(verts, minetest.get_node({ x=pos.x+1, y=pos.y, z=pos.z }).name) then return 2 end
if string.find(verts, minetest.get_node({ x=pos.x , y=pos.y, z=pos.z-1 }).name) then return 5 end
if string.find(verts, minetest.get_node({ x=pos.x , y=pos.y, z=pos.z+1 }).name) then return 4 end
end
return nil
end
-- Function to search downward from the given position, looking for the first
-- node that matches the ground table. Returns the new position, or nil if
-- height limit is exceeded before finding it.
function biome_lib:search_downward(pos, heightlimit, ground)
for i = 0, heightlimit do
if string.find(dump(ground), minetest.get_node({x=pos.x, y=pos.y-i, z = pos.z}).name) then
return {x=pos.x, y=pos.y-i, z = pos.z}
end
end
return false
end
function biome_lib:find_open_side(pos)
if minetest.get_node({ x=pos.x-1, y=pos.y, z=pos.z }).name == "air" then
return {newpos = { x=pos.x-1, y=pos.y, z=pos.z }, facedir = 2}
end
if minetest.get_node({ x=pos.x+1, y=pos.y, z=pos.z }).name == "air" then
return {newpos = { x=pos.x+1, y=pos.y, z=pos.z }, facedir = 3}
end
if minetest.get_node({ x=pos.x, y=pos.y, z=pos.z-1 }).name == "air" then
return {newpos = { x=pos.x, y=pos.y, z=pos.z-1 }, facedir = 4}
end
if minetest.get_node({ x=pos.x, y=pos.y, z=pos.z+1 }).name == "air" then
return {newpos = { x=pos.x, y=pos.y, z=pos.z+1 }, facedir = 5}
end
return nil
end
-- spawn_tree() on generate is routed through here so that other mods can hook
-- into it.
function biome_lib:generate_tree(pos, nodes_or_function_or_model)
minetest.spawn_tree(pos, nodes_or_function_or_model)
end
-- and this one's for the call used in the growing code
function biome_lib:grow_tree(pos, nodes_or_function_or_model)
minetest.spawn_tree(pos, nodes_or_function_or_model)
end
-- Check for infinite stacks

53
search_functions.lua Normal file
View File

@ -0,0 +1,53 @@
-- function to decide if a node has a wall that's in verticals_list{}
-- returns wall direction of valid node, or nil if invalid.
function biome_lib:find_adjacent_wall(pos, verticals, randomflag)
local verts = dump(verticals)
if randomflag then
local walltab = {}
if string.find(verts, minetest.get_node({ x=pos.x-1, y=pos.y, z=pos.z }).name) then walltab[#walltab + 1] = 3 end
if string.find(verts, minetest.get_node({ x=pos.x+1, y=pos.y, z=pos.z }).name) then walltab[#walltab + 1] = 2 end
if string.find(verts, minetest.get_node({ x=pos.x , y=pos.y, z=pos.z-1 }).name) then walltab[#walltab + 1] = 5 end
if string.find(verts, minetest.get_node({ x=pos.x , y=pos.y, z=pos.z+1 }).name) then walltab[#walltab + 1] = 4 end
if #walltab > 0 then return walltab[math.random(1, #walltab)] end
else
if string.find(verts, minetest.get_node({ x=pos.x-1, y=pos.y, z=pos.z }).name) then return 3 end
if string.find(verts, minetest.get_node({ x=pos.x+1, y=pos.y, z=pos.z }).name) then return 2 end
if string.find(verts, minetest.get_node({ x=pos.x , y=pos.y, z=pos.z-1 }).name) then return 5 end
if string.find(verts, minetest.get_node({ x=pos.x , y=pos.y, z=pos.z+1 }).name) then return 4 end
end
return nil
end
-- Function to search downward from the given position, looking for the first
-- node that matches the ground table. Returns the new position, or nil if
-- height limit is exceeded before finding it.
function biome_lib:search_downward(pos, heightlimit, ground)
for i = 0, heightlimit do
if string.find(dump(ground), minetest.get_node({x=pos.x, y=pos.y-i, z = pos.z}).name) then
return {x=pos.x, y=pos.y-i, z = pos.z}
end
end
return false
end
function biome_lib:find_open_side(pos)
if minetest.get_node({ x=pos.x-1, y=pos.y, z=pos.z }).name == "air" then
return {newpos = { x=pos.x-1, y=pos.y, z=pos.z }, facedir = 2}
end
if minetest.get_node({ x=pos.x+1, y=pos.y, z=pos.z }).name == "air" then
return {newpos = { x=pos.x+1, y=pos.y, z=pos.z }, facedir = 3}
end
if minetest.get_node({ x=pos.x, y=pos.y, z=pos.z-1 }).name == "air" then
return {newpos = { x=pos.x, y=pos.y, z=pos.z-1 }, facedir = 4}
end
if minetest.get_node({ x=pos.x, y=pos.y, z=pos.z+1 }).name == "air" then
return {newpos = { x=pos.x, y=pos.y, z=pos.z+1 }, facedir = 5}
end
return nil
end