loud_walking/deco.lua

-----------------
-- Decorations --
-----------------

-- The main decoration handler, through the game's decoration manager.


-- A list of all schematics, for re-use.
loud_walking.schematics = {}

function table.contains_substring(t, s)
	if type(s) ~= "string" then
		return nil
	end

  for key, value in pairs(t) do
    if type(value) == 'string' and s:find(value) then
			if key then
				return key
			else
				return true
			end
    end
  end
  return false
end


-- Copy all the decorations except the ones I don't like.
loud_walking.decorations = {}
local bad_deco = {}
for _, i in pairs({"apple_tree", "pine_tree", "jungle_tree", "acacia_tree", "aspen_tree", }) do
	bad_deco[i] = true
end

do
	for _, odeco in pairs(minetest.registered_decorations) do
		if not bad_deco[odeco.schematic] then
			local deco = {}
			if odeco.biomes then
				deco.biomes = {}
				for _, b in pairs(odeco.biomes) do
					deco.biomes[b] = true
				end
			end

			deco.deco_type = odeco.deco_type
			deco.decoration = odeco.decoration
			deco.schematic = odeco.schematic
			deco.fill_ratio = odeco.fill_ratio

			if odeco.noise_params then
				deco.fill_ratio = math.max(0.001, odeco.noise_params.scale + odeco.noise_params.offset)
			end

			local nod = minetest.registered_nodes[deco.decoration]
			if nod and nod.groups and nod.groups.flower then
				deco.flower = true
			end

			loud_walking.decorations[#loud_walking.decorations+1] = deco
		end
	end
end

minetest.clear_registered_decorations()

-- Create and initialize a table for a schematic.
function loud_walking.schematic_array(width, height, depth)
	-- Dimensions of data array.
	local s = {size={x=width, y=height, z=depth}}
	s.data = {}

	for z = 0,depth-1 do
		for y = 0,height-1 do
			for x = 0,width-1 do
				local i = z*width*height + y*width + x + 1
				s.data[i] = {}
				s.data[i].name = "air"
				s.data[i].param1 = 000
			end
		end
	end

	s.yslice_prob = {}

	return s
end


dofile(loud_walking.path.."/deco_trees.lua")


local function register_flower(name, desc, biomes, chance)
	local groups = {}
	groups.snappy = 3
	groups.flammable = 2
	groups.flower = 1
	groups.flora = 1
	groups.attached_node = 1

	minetest.register_node("loud_walking:" .. name, {
		description = desc,
		drawtype = "plantlike",
		waving = 1,
		tiles = {"loud_walking_" .. name .. ".png"},
		inventory_image = "loud_walking_" .. name .. ".png",
		wield_image = "flowers_" .. name .. ".png",
		sunlight_propagates = true,
		paramtype = "light",
		walkable = false,
		buildable_to = true,
		stack_max = 99,
		groups = groups,
		sounds = default.node_sound_leaves_defaults(),
		selection_box = {
			type = "fixed",
			fixed = {-0.5, -0.5, -0.5, 0.5, -5/16, 0.5},
		}
	})

	local bi = {}
	if biomes then
		bi = {}
		for _, b in pairs(biomes) do
			bi[b] = true
		end
	end

	loud_walking.decorations[#loud_walking.decorations+1] = {
		deco_type = "simple",
		place_on = {"default:dirt_with_grass"},
		biomes = bi,
		fill_ratio = chance,
		flower = true,
		decoration = "loud_walking:"..name,
	}
end

register_flower("orchid", "Orchid", {"rainforest", "rainforest_swamp"}, 0.025)
register_flower("bird_of_paradise", "Bird of Paradise", {"rainforest", "desertstone_grassland"}, 0.025)
register_flower("gerbera", "Gerbera", {"savanna", "rainforest", "desertstone_grassland"}, 0.005)


local function register_decoration(deco, place_on, biomes, chance)
	local bi = {}
	if biomes then
		bi = {}
		for _, b in pairs(biomes) do
			bi[b] = true
		end
	end

	loud_walking.decorations[#loud_walking.decorations+1] = {
		deco_type = "simple",
		place_on = place_on,
		biomes = bi,
		fill_ratio = chance,
		decoration = deco,
	}
end

if crops then
	register_decoration(
		"crops:pumpkin_plant_4",
		{ "default:dirt_with_grass" },
		{"stone_grassland", "sandstone_grassland", "deciduous_forest",
		"coniferous_forest"},
		0.002
	)
	register_decoration(
		"crops:melon_plant_4",
		{ "default:dirt_with_grass" },
		{"deciduous_forest", "coniferous_forest", "tundra"},
		0.002
	)
	register_decoration(
		"crops:tomato_plant_4",
		{ "default:dirt_with_grass" },
		{"rainforest"},
		0.002
	)
end