technic/technic_worldgen/rubber.lua

-- Code of rubber tree by PilzAdam

minetest.register_node(":moretrees:rubber_tree_sapling", {
	description = "Rubber Tree Sapling",
	drawtype = "plantlike",
	tiles = {"technic_rubber_sapling.png"},
	inventory_image = "technic_rubber_sapling.png",
	wield_image = "technic_rubber_sapling.png",
	paramtype = "light",
	walkable = false,
	groups = {dig_immediate=3, flammable=2},
	sounds = default.node_sound_defaults(),
})

minetest.register_craft({
	type = "fuel",
	recipe = "moretrees:rubber_tree_sapling",
	burntime = 10
})

minetest.register_node(":moretrees:rubber_tree_trunk", {
	description = "Rubber Tree",
	tiles = {"default_tree_top.png", "default_tree_top.png",
		"technic_rubber_tree_full.png"},
	groups = {tree=1, snappy=1, choppy=2, oddly_breakable_by_hand=1,
		flammable=2},
	drop = "default:tree",
	sounds = default.node_sound_wood_defaults(),
})

minetest.register_node(":moretrees:rubber_tree_trunk_empty", {
	tiles = {"default_tree_top.png", "default_tree_top.png",
		"technic_rubber_tree_empty.png"},
	groups = {tree=1, snappy=1, choppy=2, oddly_breakable_by_hand=1,
			flammable=2, not_in_creative_inventory=1},
	drop = "default:tree",
	sounds = default.node_sound_wood_defaults(),
})

minetest.register_abm({
	nodenames = {"moretrees:rubber_tree_trunk_empty"},
	interval = 60,
	chance = 15,
	action = function(pos, node)
		minetest.set_node(pos, {name="moretrees:rubber_tree_trunk"})
	end
})

minetest.register_node(":moretrees:rubber_tree_leaves", {
	drawtype = "allfaces_optional",
	visual_scale = 1.3,
	tiles = {"technic_rubber_leaves.png"},
	paramtype = "light",
	groups = {snappy=3, leafdecay=3, flammable=2, not_in_creative_inventory=1},
	drop = {
		max_items = 1,
		items = {{
			items = {"moretrees:rubber_tree_sapling"},
			rarity = 20,
		}}
	},
	sounds = default.node_sound_leaves_defaults(),
})

technic.rubber_tree_model={
	axiom = "FFFFA",
	rules_a = "[&FFBFA]////[&BFFFA]////[&FBFFA]",
	rules_b = "[&FFA]////[&FFA]////[&FFA]",
	trunk = "moretrees:rubber_tree_trunk",
	leaves = "moretrees:rubber_tree_leaves",
	angle = 35,
	iterations = 3,
	random_level = 1,
	trunk_type = "double",
	thin_branches = true
}

minetest.register_abm({
	nodenames = {"moretrees:rubber_tree_sapling"},
	interval = 60,
	chance = 20,
	action = function(pos, node)
		minetest.remove_node(pos)
		minetest.spawn_tree(pos, technic.rubber_tree_model)
	end
})

if technic.config:get_bool("enable_rubber_tree_generation") then
	minetest.register_on_generated(function(minp, maxp, blockseed)
		if math.random(1, 100) > 5 then
			return
		end
		local tmp = {
				x = (maxp.x - minp.x) / 2 + minp.x,
				y = (maxp.y - minp.y) / 2 + minp.y,
				z = (maxp.z - minp.z) / 2 + minp.z}
		local pos = minetest.find_node_near(tmp, maxp.x - minp.x,
				{"default:dirt_with_grass"})
		if pos ~= nil then
			minetest.spawn_tree({x=pos.x, y=pos.y+1, z=pos.z}, technic.rubber_tree_model)
		end
	end)
end