write something there

mods/geodes/LICENSE.txt

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+~~LICENSE~~
+
+Source Code:
+
+(C) AwesomeDragon97
+
+LGPL-3.0
+
+Textures:
+
+(C) AwesomeDragon97
+
+CC-BY-SA-3.0
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

mods/geodes/init.lua

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+geodes = {}
+
+local geode_types = {}
+
+minetest.register_node("geodes:calcite", {
+	description = "Calcite",
+	tiles = {"calcite.png"},
+	groups = {cracky = 3, not_in_creative_inventory = 1},
+	sounds = default.node_sound_stone_defaults(),
+})
+
+minetest.register_node("geodes:amethyst_block", {
+	description = "Amethyst Block",
+	tiles = {"amethyst_block.png"},
+	groups = {cracky = 3, not_in_creative_inventory = 1},
+	sounds = default.node_sound_stone_defaults(),
+})
+
+minetest.register_node("geodes:basalt", {
+	description = "Basalt",
+	tiles = {"basalt.png"},
+	groups = {cracky = 3, not_in_creative_inventory = 1},
+	sounds = default.node_sound_stone_defaults(),
+})
+
+minetest.register_node("geodes:amethyst_crystal", {
+	description = "Amethyst Crystal",
+	tiles = {"amethyst_crystal.png"},
+	inventory_image = "amethyst_crystal.png",
+	drawtype = "plantlike",
+	paramtype = "light",
+	sunlight_propagates = true,
+	paramtype2 = "wallmounted",
+	groups = {cracky = 3, not_in_creative_inventory = 1},
+	sounds = default.node_sound_stone_defaults(),
+	node_box = {
+		type = "fixed",
+		fixed = {-5/16, -0.5, -5/16, 5/16, 5/16, 5/16}
+	},
+	selection_box = {
+		type = "fixed",
+		fixed = {-5/16, -0.5, -5/16, 5/16, 5/16, 5/16}
+	},
+})
+
+minetest.register_node("geodes:geode_core", {
+	groups = {not_in_creative_inventory = 1},
+})
+
+minetest.register_ore({
+	ore_type       = "scatter",
+	ore            = "geodes:geode_core",
+	wherein        = "default:stone",
+	clust_scarcity = 64 * 64 * 64,
+	clust_num_ores = 1,
+	clust_size     = 1,
+	y_max          = -40,
+	y_min          = -31000,
+})
+
+minetest.register_ore({
+	ore_type       = "scatter",
+	ore            = "geodes:geode_core",
+	wherein        = "air",
+	clust_scarcity = 64 * 64 * 64,
+	clust_num_ores = 1,
+	clust_size     = 1,
+	y_max          = -40,
+	y_min          = -31000,
+})
+
+minetest.register_lbm({
+        label = "make_geode",
+	name = "geodes:create_geode",
+        nodenames = {"geodes:geode_core"},
+        run_at_every_load = true,
+        action = function(pos, node)
+		
+		if (#geode_types == 0) then
+			minetest.log('THE GEODES MOD REQUIRES AT LEAST ONE MOD THAT ADDS GEODES TO FUNCTION. PLEASE MAKE SURE THAT THE "amethyst_geodes" MOD IS ENABLED, OR ANOTHER MOD THAT USES THE API IS ENABLED.')
+			return
+		end
+
+		local pcgr = PcgRandom(minetest.hash_node_position(pos))
+		local outer, middle, inner, crystal, fill, size_min, size_max = unpack(geode_types[math.random(1, #geode_types)])
+		local size = pcgr:next(size_min, size_max)
+
+		for x = -size, size do
+		for y = -size, size do
+		for z = -size, size do
+		if minetest.get_node(pos + vector.new(x, y, z)).name ~= "air" then
+		if vector.distance(vector.new(x, y, z), vector.new()) < size then
+			minetest.set_node(pos + vector.new(x, y, z), {name = outer})
+		if vector.distance(vector.new(x, y, z), vector.new()) < size - 1 then
+			minetest.set_node(pos + vector.new(x, y, z), {name = middle})
+		if vector.distance(vector.new(x, y, z), vector.new()) < size - 2 then
+			minetest.set_node(pos + vector.new(x, y, z), {name = inner})
+		if vector.distance(vector.new(x, y, z), vector.new()) < size - 3 then
+			minetest.set_node(pos + vector.new(x, y, z), {name = fill})
+		end
+		end
+		end
+		end
+		end
+		end
+		end
+		end
+
+		if crystal ~= fill then
+		for x = -size +4, size -4 do
+		for y = -size +4, size -4 do
+		for z = -size +4, size -4 do
+		if pcgr:next(0, 10) == 0 and vector.distance(vector.new(x, y, z), vector.new()) >= size - 4 and vector.distance(vector.new(x, y, z), vector.new()) < size - 3 then
+
+			if minetest.get_node(pos + vector.new(x, y + 1, z)).name == inner then
+			minetest.set_node(pos + vector.new(x, y, z), {name = crystal, param2 = 0})
+			elseif minetest.get_node(pos + vector.new(x, y - 1, z)).name == inner then
+			minetest.set_node(pos + vector.new(x, y, z), {name = crystal, param2 = 1})
+			elseif minetest.get_node(pos + vector.new(x + 1, y, z)).name == inner then
+			minetest.set_node(pos + vector.new(x, y, z), {name = crystal, param2 = 2})
+			elseif minetest.get_node(pos + vector.new(x - 1, y, z)).name == inner then
+			minetest.set_node(pos + vector.new(x, y, z), {name = crystal, param2 = 3})
+			elseif minetest.get_node(pos + vector.new(x, y, z + 1)).name == inner then
+			minetest.set_node(pos + vector.new(x, y, z), {name = crystal, param2 = 4})
+			elseif minetest.get_node(pos + vector.new(x, y, z - 1)).name == inner then
+			minetest.set_node(pos + vector.new(x, y, z), {name = crystal, param2 = 5})
+			
+			end
+		end
+		end
+		end
+		end
+		end
+
+	end,
+    })
+
+
+function geodes.register_geode(outer, middle, inner, crystal, fill, size_min, size_max)
+	table.insert(geode_types, {outer, middle, inner, crystal or "air", fill or "air", size_min or 6, size_max or 11})
+end

mods/geodes/mod.conf

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+name = geodes
+title = Geodes
+description = Adds an API to make custom geodes.
+depends = default