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

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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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176
plants_lib/init.lua
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@ -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
@ -42,31 +36,89 @@ 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(
sdelay,
splant,
sradius,
schance,
ssurface,
savoid,
seed_diff,
lightmin,
lightmax,
nneighbors,
ocount,
facedir,
depthmax,
altmin,
altmax,
sbiome,
sbiomesize,
sbiomecount,
airsize,
aircount,
tempmin,
tempmax)
function plantslib:spawn_on_surfaces(
sdelay,
splant,
sradius,
schance,
ssurface,
savoid,
seed_diff,
lightmin,
lightmax,
nneighbors,
ocount,
facedir,
depthmax,
altmin,
altmax,
sbiome,
sbiomesize,
sbiomecount,
airsize,
aircount,
tempmin,
tempmax)
if seed_diff == nil then seed_diff = 0 end
if lightmin == nil then lightmin = 0 end
if lightmax == nil then lightmax = LIGHT_MAX end
@ -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
@ -131,20 +183,20 @@ end
-- The growing ABM
grow_plants = function(
gdelay,
gchance,
gplant,
gresult,
dry_early_node,
grow_nodes,
facedir,
need_wall,
grow_vertically,
height_limit,
ground_nodes,
grow_function,
seed_diff)
function plantslib:grow_plants(
gdelay,
gchance,
gplant,
gresult,
dry_early_node,
grow_nodes,
facedir,
need_wall,
grow_vertically,
height_limit,
ground_nodes,
grow_function,
seed_diff)
if need_wall ~= true then need_wall = false end
if grow_vertically ~= true then grow_vertically = false end
if height_limit == nil then height_limit = 62000 end
@ -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