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flowers/mapgen.lua: Register flower decorations for mgv6

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paramat committed Mar 24, 2015
1 parent 9eb9502 commit 8a8712e4a3c32fdce0b43f874a8a5cdcee46d882
Showing with 30 additions and 65 deletions.
  1. +30 −65 mods/flowers/mapgen.lua
@@ -1,70 +1,35 @@
function flowers.mgv6ongen(minp, maxp, seed)
if maxp.y >= 2 and minp.y <= 0 then
-- Generate flowers
local perlin1 = minetest.get_perlin(436, 3, 0.6, 100)
-- Assume X and Z lengths are equal
local divlen = 16
local divs = (maxp.x-minp.x)/divlen+1;
for divx=0,divs-1 do
for divz=0,divs-1 do
local x0 = minp.x + math.floor((divx+0)*divlen)
local z0 = minp.z + math.floor((divz+0)*divlen)
local x1 = minp.x + math.floor((divx+1)*divlen)
local z1 = minp.z + math.floor((divz+1)*divlen)
-- Determine flowers amount from perlin noise
local grass_amount = math.floor(perlin1:get2d({x=x0, y=z0}) ^ 3 * 9)
-- Find random positions for flowers based on this random
local pr = PseudoRandom(seed+456)
for i=0,grass_amount do
local x = pr:next(x0, x1)
local z = pr:next(z0, z1)
-- Find ground level (0...15)
local ground_y = nil
for y=30,0,-1 do
if minetest.get_node({x=x,y=y,z=z}).name ~= "air" then
ground_y = y
break
end
end

if ground_y then
local p = {x=x,y=ground_y+1,z=z}
local nn = minetest.get_node(p).name
-- Check if the node can be replaced
if minetest.registered_nodes[nn] and
minetest.registered_nodes[nn].buildable_to then
nn = minetest.get_node({x=x,y=ground_y,z=z}).name
if nn == "default:dirt_with_grass" then
local flower_choice = pr:next(1, 6)
local flower
if flower_choice == 1 then
flower = "flowers:tulip"
elseif flower_choice == 2 then
flower = "flowers:rose"
elseif flower_choice == 3 then
flower = "flowers:dandelion_yellow"
elseif flower_choice == 4 then
flower = "flowers:dandelion_white"
elseif flower_choice == 5 then
flower = "flowers:geranium"
elseif flower_choice == 6 then
flower = "flowers:viola"
end
minetest.set_node(p, {name=flower})
end
end
end
local function register_flower(name)
minetest.register_decoration({
deco_type = "simple",
place_on = {"default:dirt_with_grass"},
sidelen = 16,
noise_params = {
offset = 0,
scale = 0.006,
spread = {x=100, y=100, z=100},
seed = 436,
octaves = 3,
persist = 0.6
},
y_min = 1,
y_max = 30,
decoration = "flowers:"..name.."",

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@kilbith

kilbith Mar 25, 2015

Contributor

decoration = "flowers:"..name,

})
end

end
end
end
end
function flowers.register_mgv6_decorations()
register_flower("rose")
register_flower("tulip")
register_flower("dandelion_yellow")
register_flower("geranium")
register_flower("viola")
register_flower("dandelion_white")
end

-- Enable in mapgen v6 only

minetest.register_on_mapgen_init(function(mg_params)
if mg_params.mgname == "v6" then
minetest.register_on_generated(flowers.mgv6ongen)
end
end)
local mg_params = minetest.get_mapgen_params()
if mg_params.mgname == "v6" then
flowers.register_mgv6_decorations()
end

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