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Added a function to let one spawn plants at mapgen time, 

but it's slow as molasses in January.  Not recommended for
general use yet.
This commit is contained in:
Vanessa Ezekowitz 2013-01-19 00:45:46 -05:00
parent 4eff513bbd
commit 7dd3ec2525
5 changed files with 286 additions and 214 deletions
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59
API.txt
View File

@ -1,31 +1,40 @@
This document briefly describes the Plantlife API.
Last revision: 2013-01-18
=========
Functions
=========
There are five main functions defined by the main "plants_lib" mod:
All functions in plants lib are declared locally to avoid namespace collisions
with other mods. They are accessible via the "plantslib" method, e.g.
plantslib:spawn_on_surfaces() and so forth.
There are three main functions defined by the main "plants_lib" mod:
spawn_on_surfaces()
generate_on_surfaces()
grow_plants()
plant_valid_wall()
is_node_loaded()
dbg()
There are also several internal, helper functions that can be called if so
desired, but they are not really intended for use by other mods and may change
at any time. See init.lua for more.
-----
The first of these, spawn_on_surfaces() is defined with quite a large number
of variables. All of the variables below, if specified at all, must be
specified exactly in the order given here. This function has no return value.
spawn_on_surfaces = function(sdelay, splant, sradius, schance, ssurface,
savoid, seed_diff, lightmin, lightmax, nneighbors, ocount,
facedir, depthmax, altitudemin, altitudemax, tempmin, tempmax)
savoid, seed_diff, lightmin, lightmax, nneighbors, ocount, facedir,
depthmax, altitudemin, altitudemax, sbiome, sbiomesize, sbiomecount,
airsize, aircount, tempmin, tempmax)
The first several of these are all required, and are from the last version of
the flowers mod, so this part of the API should be the same as before.
sdelay: The value passed to the ABM's interval parameter, usually
in the 1000-3000 range.
sdelay: The value passed to the ABM's interval parameter, in seconds.
splant: The node name of the item to spawn (e.g.
"flowers:flower_rose"). Note that if the plant is
"poisonivy:seedling", and it's next to a wall at spawn
@ -35,7 +44,8 @@ splant: The node name of the item to spawn (e.g.
sradius: Don't spawn within this many nodes of the avoid items
mentioned below.
schance: The value passed to the ABM's chance parameter, normally
in the 10-100 range.
in the 10-100 range (1-in-X chance of operating on a given
node, e.g. 1-in-10).
ssurface: Table with the names of the nodes on which to spawn the
plant in question, such as {"default:sand",
"default:dirt_with_grass"}. It is not recommended to put
@ -49,8 +59,9 @@ savoid: Table with a list of groups and/or node names to avoid
"default:tree"}.
From here down are several optional parameters. You can use as many as you
need, but you must specify them in order (so if you want lightmax, you need
lightmin and seed_diff also, but not the rest).
need, but you must specify them in order. To keep the default values for
those parameters you don't wish to alter, set them to nil in your function
call.
seed_diff: The Perlin seed difference value passed to the
minetest.env:get_perlin() function. Used along with the
@ -101,7 +112,16 @@ By default, if a biome node, size, and count are not defined, the biome
checking is disabled. Same holds true for the nneighbors bit above that.
-----
The second function, grow_plants() is used to turn the spawned nodes above
XXXXXXXXXX FIX ME FIX ME FIX ME
XXXXXXXXXX
XXXXXXXXXX Document the mapgen-based spawning function
XXXXXXXXXX
XXXXXXXXXX FIX ME FIX ME FIX ME
-----
The third function, grow_plants() is used to turn the spawned nodes above
into something else over time. This function has no return value, and is
defined like so:
@ -137,8 +157,8 @@ grow_vertically: Set this to true if the plant needs to grow vertically, as
in climbing poison ivy. Defaults to false.
height_limit: Just how tall can a vertically-growing plant go? Set this
accordingly. The mod will search straight down from the
position being spawned at to find a ground node, below.
Defaults to 62000 (unlimited).
position being spawned at to find a ground node, set via the
parameter below. Defaults to 62000 (unlimited).
ground_nodes: What nodes should be treated as "the ground" below a
vertically-growing plant. Usually this will be the same
as the grow_nodes table, but might also include, for
@ -161,18 +181,21 @@ seed_diff: The Perlin seed diff to be use to calculate the noise
that's being grown.
-----
plant_valid_wall() expects only a single parameter, "pos", which is the usual
table indicating the coordinates around which to search for adjacent walls.
This function returns the location of the first wall found as a facedir value,
or nil if there are no adjacent walls.
Of the few helper functions, plant_valid_wall() expects only a single
parameter, "pos", which is the usual table indicating the coordinates around
which to search for adjacent walls. This function returns the location of the
first wall found as a facedir value, or nil if there are no adjacent walls.
-----
is_node_loaded() is defined in exactly the same manner (that is, "node_pos" is
a set of coordinates), and acts as a wrapper for the
minetest.env:get_node_or_nil(node_pos) function. Returns true if the node in
question is already loaded, or false if not.
-----
dbg() is a simple debug output function which takes one string parameter. It
just checks if plantlife_debug is true and outputs the phrase "[Plantlife] "
followed by the supplied string, via the print() function.

14
flowers/init.lua
View File

@ -2,9 +2,7 @@
local spawn_delay = 2000 -- 2000
local spawn_chance = 100 -- 100
local grow_delay = 1000 -- 1000
local grow_chance = 10 -- 10
local flowers_seed_diff = plantlife_seed_diff+20
local flowers_seed_diff = plantslib.plantlife_seed_diff+20
local flowers_list = {
{ "Rose", "rose", spawn_delay, 10, spawn_chance , 10},
@ -66,7 +64,7 @@ for i in ipairs(flowers_list) do
}
})
spawn_on_surfaces(delay, "flowers:flower_"..flower, radius, chance, "default:dirt_with_grass", {"group:flower", "group:poisonivy"}, flowers_seed_diff)
plantslib:spawn_on_surfaces(delay, "flowers:flower_"..flower, radius, chance, "default:dirt_with_grass", {"group:flower", "group:poisonivy"}, flowers_seed_diff)
end
minetest.register_node(":flowers:flower_waterlily", {
@ -105,11 +103,11 @@ minetest.register_node(":flowers:flower_seaweed", {
},
})
spawn_on_surfaces(spawn_delay/2, "flowers:flower_waterlily", 3, spawn_chance*2, "default:water_source" , {"group:flower"}, flowers_seed_diff, 10, nil, nil, nil, nil, 4)
plantslib:spawn_on_surfaces(spawn_delay/2, "flowers:flower_waterlily", 3, spawn_chance*2, "default:water_source" , {"group:flower"}, flowers_seed_diff, 10, nil, nil, nil, nil, 4)
spawn_on_surfaces(spawn_delay*2, "flowers:flower_seaweed" , 0.1, spawn_chance*2, "default:water_source" , {"group:flower"}, flowers_seed_diff, 4, 10, {"default:dirt_with_grass"}, 0, 1)
spawn_on_surfaces(spawn_delay*2, "flowers:flower_seaweed" , 0.1, spawn_chance*2, "default:dirt_with_grass", {"group:flower"}, flowers_seed_diff, 4, 10, {"default:water_source"} , 1, 1)
spawn_on_surfaces(spawn_delay*2, "flowers:flower_seaweed" , 0.1, spawn_chance*2, "default:stone" , {"group:flower"}, flowers_seed_diff, 4, 10, {"default:water_source"} , 6, 1)
plantslib:spawn_on_surfaces(spawn_delay*2, "flowers:flower_seaweed" , 0.1, spawn_chance*2, "default:water_source" , {"group:flower"}, flowers_seed_diff, 4, 10, {"default:dirt_with_grass"}, 0, 1)
plantslib:spawn_on_surfaces(spawn_delay*2, "flowers:flower_seaweed" , 0.1, spawn_chance*2, "default:dirt_with_grass", {"group:flower"}, flowers_seed_diff, 4, 10, {"default:water_source"} , 1, 1)
plantslib:spawn_on_surfaces(spawn_delay*2, "flowers:flower_seaweed" , 0.1, spawn_chance*2, "default:stone" , {"group:flower"}, flowers_seed_diff, 4, 10, {"default:water_source"} , 6, 1)
minetest.register_craftitem(":flowers:flower_pot", {

12
junglegrass/init.lua
View File

@ -4,7 +4,7 @@ local spawn_delay = 2000 -- 2000
local spawn_chance = 100 -- 100
local grow_delay = 1000 -- 1000
local grow_chance = 10 -- 10
local junglegrass_seed_diff = plantlife_seed_diff
local junglegrass_seed_diff = plantslib.plantlife_seed_diff
local grasses_list = {
{"junglegrass:shortest","junglegrass:short" },
@ -68,12 +68,12 @@ minetest.register_node(':junglegrass:shortest', {
},
})
spawn_on_surfaces(spawn_delay*2, "junglegrass:shortest", 4, spawn_chance, "default:dirt_with_grass", {"group:junglegrass", "default:junglegrass", "default:dry_shrub"}, junglegrass_seed_diff, 5)
spawn_on_surfaces(spawn_delay*2, "junglegrass:shortest", 4, spawn_chance*2, "default:sand" , {"group:junglegrass", "default:junglegrass", "default:dry_shrub"}, junglegrass_seed_diff, 5)
spawn_on_surfaces(spawn_delay*2, "junglegrass:shortest", 4, spawn_chance*3, "default:desert_sand" , {"group:junglegrass", "default:junglegrass", "default:dry_shrub"}, junglegrass_seed_diff, 5)
spawn_on_surfaces(spawn_delay*2, "junglegrass:shortest", 4, spawn_chance*3, "default:desert_sand" , {"group:junglegrass", "default:junglegrass", "default:dry_shrub"}, junglegrass_seed_diff, 5)
plantslib:spawn_on_surfaces(spawn_delay*2, "junglegrass:shortest", 4, spawn_chance, "default:dirt_with_grass", {"group:junglegrass", "default:junglegrass", "default:dry_shrub"}, junglegrass_seed_diff, 5)
plantslib:spawn_on_surfaces(spawn_delay*2, "junglegrass:shortest", 4, spawn_chance*2, "default:sand" , {"group:junglegrass", "default:junglegrass", "default:dry_shrub"}, junglegrass_seed_diff, 5)
plantslib:spawn_on_surfaces(spawn_delay*2, "junglegrass:shortest", 4, spawn_chance*3, "default:desert_sand" , {"group:junglegrass", "default:junglegrass", "default:dry_shrub"}, junglegrass_seed_diff, 5)
plantslib:spawn_on_surfaces(spawn_delay*2, "junglegrass:shortest", 4, spawn_chance*3, "default:desert_sand" , {"group:junglegrass", "default:junglegrass", "default:dry_shrub"}, junglegrass_seed_diff, 5)
for i in ipairs(grasses_list) do
grow_plants(grow_delay, grow_chance/2, grasses_list[i][1], grasses_list[i][2], "default:desert_sand", {"default:dirt_with_grass", "default:sand", "default:desert_sand"})
plantslib:grow_plants(grow_delay, grow_chance/2, grasses_list[i][1], grasses_list[i][2], "default:desert_sand", {"default:dirt_with_grass", "default:sand", "default:desert_sand"})
end

106
plants_lib/init.lua
View File

@ -1,17 +1,17 @@
-- Plantlife library mod by Vanessa Ezekowitz
-- 2013-01-00
-- 2013-01-18
--
-- License: WTFPL
--
-- I got the temperature map idea from "hmmmm", values used for it came from
-- Splizard's snow mod.
--
-- Various settings - most of these probably won't need to be changed
plantlife_seed_diff = 329 -- needs to be global so other mods can see it
plantslib = {}
local plantlife_debug = true -- ...unless you want the modpack to spam the console ;-)
plantslib.plantlife_seed_diff = 329 -- needs to be global so other mods can see it
local perlin_octaves = 3
local perlin_persistence = 0.6
@ -28,13 +28,7 @@ local plantlife_limit = 0.1 -- compared against perlin noise. lower = more abun
math.randomseed(os.time())
local dbg = function(s)
if plantlife_debug then
print("[Plantlife] " .. s)
end
end
local is_node_loaded = function(node_pos)
function plantslib:is_node_loaded(node_pos)
n = minetest.env:get_node_or_nil(node_pos)
if (n == nil) or (n.name == "ignore") then
return false
@ -42,9 +36,67 @@ local is_node_loaded = function(node_pos)
return true
end
-- Spawn plants using the map generator
function plantslib:register_generate_plant(biome)
minetest.register_on_generated(plantslib:search_for_surfaces(minp, maxp, biome))
end
function plantslib:search_for_surfaces(minp, maxp, biome)
return function(minp, maxp, blockseed)
print("Started checking generated mapblock...")
local searchnodes = minetest.env:find_nodes_in_area(minp, maxp, biome.surface)
local surfacenodes = {}
local numsurfacenodes = 0
for i in ipairs(searchnodes) do
local pos = searchnodes[i]
local p_top = { x = pos.x, y = pos.y + 1, z = pos.z }
if minetest.env:get_node(p_top).name == "air" then
table.insert(surfacenodes, pos)
numsurfacenodes = numsurfacenodes + 1
end
end
print("Found "..numsurfacenodes.." surface nodes in map block {"..dump(minp)..":"..dump(maxp).."} to check.")
if biome.seed_diff == nil then biome.seed_diff = 0 end
if biome.neighbors == nil then biome.neighbors = biome.surface end
if biome.ncount == nil then biome.ncount = -1 end
if biome.min_elevation == nil then biome.min_elevation = -31000 end
if biome.max_elevation == nil then biome.max_elevation = 31000 end
if biome.near_nodes_size == nil then biome.near_nodes_size = 0 end
if biome.near_nodes_count == nil then biome.near_nodes_count = 1 end
if biome.temp_min == nil then biome.temp_min = -1 end
if biome.temp_max == nil then biome.temp_max = 1 end
for i in ipairs(surfacenodes) do
local pos = surfacenodes[i]
local p_top = {x = pos.x, y = pos.y + 1, z = pos.z}
local perlin1 = minetest.env:get_perlin(biome.seed_diff, perlin_octaves, perlin_persistence, perlin_scale)
local perlin2 = minetest.env:get_perlin(temperature_seeddiff, temperature_octaves, temperature_persistence, temperature_scale)
local noise1 = perlin1:get2d({x=p_top.x, y=p_top.z})
local noise2 = perlin2:get2d({x=p_top.x, y=p_top.z})
if minetest.env:find_node_near(p_top, biome.radius + math.random(-1.5,1.5), biome.avoid) == nil
and noise1 > plantlife_limit
and noise2 >= biome.temp_min
and noise2 <= biome.temp_max
and (biome.ncount == -1 or table.getn(minetest.env: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 (biome.near_nodes == nil or table.getn(minetest.env:find_nodes_in_area({x=pos.x-biome.near_nodes_size, y=pos.y-1, z=pos.z-biome.near_nodes_size}, {x=pos.x+biome.near_nodes_size, y=pos.y+1, z=pos.z+biome.near_nodes_size}, biome.near_nodes)) >= biome.near_nodes_count)
and pos.y >= biome.min_elevation
and pos.y <= biome.max_elevation
and (biome.water_depth == nil or minetest.env:get_node({ x = pos.x, y = pos.y-biome.water_depth-1, z = pos.z }).name ~= "default:water_source")
then
minetest.log("verbose", "Call function: "..biome.exec_funct.."("..dump(pos)..")")
assert(loadstring(biome.exec_funct.."("..dump(pos)..")"))()
end
end
print("Finished checking generated mapblock.")
end
end
-- The spawning ABM
spawn_on_surfaces = function(
function plantslib:spawn_on_surfaces(
sdelay,
splant,
sradius,
@ -97,7 +149,7 @@ spawn_on_surfaces = function(
if noise1 > plantlife_limit
and noise2 >= tempmin
and noise2 <= tempmax
and is_node_loaded(p_top) then
and plantslib:is_node_loaded(p_top) then
local n_light = minetest.env:get_node_light(p_top, nil)
if minetest.env:find_node_near(p_top, sradius + math.random(-1.5,2), savoid) == nil
and n_light >= lightmin
@ -110,16 +162,16 @@ spawn_on_surfaces = function(
and pos.y >= altmin
and pos.y <= altmax
then
local walldir = plant_valid_wall(p_top)
local walldir = plantslib:plant_valid_wall(p_top)
if splant == "poisonivy:seedling" and walldir ~= nil then
dbg("Spawn: poisonivy:climbing at "..dump(p_top).." on "..ssurface)
minetest.log("verbose", "Spawn: poisonivy:climbing at "..dump(p_top).." on "..ssurface)
minetest.env:add_node(p_top, { name = "poisonivy:climbing", param2 = walldir })
else
local deepnode = minetest.env:get_node({ x = pos.x, y = pos.y-depthmax-1, z = pos.z }).name
if (ssurface ~= "default:water_source")
or (ssurface == "default:water_source"
and deepnode ~= "default:water_source") then
dbg("Spawn: "..splant.." at "..dump(p_top).." on "..ssurface)
minetest.log("verbose", "Spawn: "..splant.." at "..dump(p_top).." on "..ssurface)
minetest.env:add_node(p_top, { name = splant, param2 = facedir })
end
end
@ -131,7 +183,7 @@ end
-- The growing ABM
grow_plants = function(
function plantslib:grow_plants(
gdelay,
gchance,
gplant,
@ -162,30 +214,30 @@ grow_plants = function(
if grow_function == nil then
if string.find(dump(grow_nodes), n_bot.name) ~= nil and n_top.name == "air" then
if grow_vertically then
if find_first_node(pos, height_limit, ground_nodes) ~= nil then
if plantslib:find_first_node(pos, height_limit, ground_nodes) ~= nil then
if need_wall then
local walldir=plant_valid_wall(p_top)
local walldir=plantslib:plant_valid_wall(p_top)
if walldir ~= nil then
dbg("Grow: "..gplant.." upwards to ("..dump(p_top)..") on wall "..walldir)
minetest.log("verbose", "Grow: "..gplant.." upwards to ("..dump(p_top)..") on wall "..walldir)
minetest.env:add_node(p_top, { name = gplant, param2 = walldir })
end
else
dbg("Grow: "..gplant.." upwards to ("..dump(p_top)..")")
minetest.log("verbose", "Grow: "..gplant.." upwards to ("..dump(p_top)..")")
minetest.env:add_node(p_top, { name = gplant })
end
end
-- corner case for changing short junglegrass to dry shrub in desert
elseif n_bot.name == dry_early_node and gplant == "junglegrass:short" then
dbg("Die: "..gplant.." becomes default:dry_shrub at ("..dump(pos)..")")
minetest.log("verbose", "Die: "..gplant.." becomes default:dry_shrub at ("..dump(pos)..")")
minetest.env:add_node(pos, { name = "default:dry_shrub" })
elseif gresult == nil then
dbg("Die: "..gplant.." at ("..dump(pos)..")")
minetest.log("verbose", "Die: "..gplant.." at ("..dump(pos)..")")
minetest.env:remove_node(pos)
elseif gresult ~= nil then
dbg("Grow: "..gplant.." becomes "..gresult.." at ("..dump(pos)..")")
minetest.log("verbose", "Grow: "..gplant.." becomes "..gresult.." at ("..dump(pos)..")")
if facedir == nil then
minetest.env:add_node(pos, { name = gresult })
else
@ -199,7 +251,7 @@ grow_plants = function(
local perlin2 = minetest.env:get_perlin(temperature_seeddiff, temperature_octaves, temperature_persistence, temperature_scale)
local noise1 = perlin1:get2d({x=p_top.x, y=p_top.z})
local noise2 = perlin2:get2d({x=p_top.x, y=p_top.z})
dbg("Call function: "..grow_function.."("..dump(pos)..","..noise1..","..noise2..")")
minetest.log("verbose", "Call function: "..grow_function.."("..dump(pos)..","..noise1..","..noise2..")")
assert(loadstring(grow_function.."("..dump(pos)..","..noise1..","..noise2..")"))()
end
end
@ -209,7 +261,7 @@ 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.
plant_valid_wall = function(wallpos)
function plantslib:plant_valid_wall(wallpos)
local walldir = nil
local verts = dump(verticals_list)
@ -230,7 +282,7 @@ end
-- Function to search straight down from (pos) to find first node in match list.
find_first_node = function(pos, height_limit, nodelist)
function plantslib:find_first_node(pos, height_limit, nodelist)
for i = 1, height_limit do
n = minetest.env:get_node({x=pos.x, y=pos.y-i, z=pos.z})
if string.find(dump(nodelist),n.name) ~= nil then

9
poinsonivy/init.lua
View File

@ -4,7 +4,7 @@ local spawn_delay = 2000 -- 2000
local spawn_chance = 100 -- 100
local grow_delay = 1000 -- 1000
local grow_chance = 10 -- 10
local poisonivy_seed_diff = plantlife_seed_diff + 10
local poisonivy_seed_diff = plantslib.plantlife_seed_diff + 10
local verticals_list = {
"default:dirt",
@ -63,9 +63,8 @@ minetest.register_node(':poisonivy:climbing', {
},
})
spawn_on_surfaces(spawn_delay, "poisonivy:seedling", 10 , spawn_chance/10, "default:dirt_with_grass", {"group:poisonivy","group:flower"}, poisonivy_seed_diff, 7)
plantslib:spawn_on_surfaces(spawn_delay, "poisonivy:seedling", 10 , spawn_chance/10, "default:dirt_with_grass", {"group:poisonivy","group:flower"}, poisonivy_seed_diff, 7)
grow_plants(spawn_delay, grow_chance, "poisonivy:seedling", "poisonivy:sproutling", nil, {"default:dirt_with_grass"})
grow_plants(spawn_delay, grow_chance*2, "poisonivy:climbing", nil, nil, nil ,nil,true,true,nil,{"default:dirt_with_grass"})
plantslib:grow_plants(spawn_delay, grow_chance, "poisonivy:seedling", "poisonivy:sproutling", nil, {"default:dirt_with_grass"})
plantslib:grow_plants(spawn_delay, grow_chance*2, "poisonivy:climbing", nil, nil, nil ,nil,true,true,nil,{"default:dirt_with_grass"})