Add slightly reduced and rewritten version of mushroom mod by Dan

Duncombe and I, with tweaks added to make mushrooms able to spawn on
woodsoils grass/dirt with leaves.

Rewrites are just to make the ABMs a little lighter-weight, but they should
still function the same as before.

This mod does not hook into the map generator.

mushroom/crafting.lua

@@ -0,0 +1,91 @@
+-- craft items
+
+minetest.register_craftitem("mushroom:spore1",{
+	description = "Unidentified Mushroom Spore",
+	inventory_image = "mushroom_spore.png",
+	wield_image = "mushroom_spore.png",
+})
+
+minetest.register_craftitem("mushroom:spore2",{
+	description = "Unidentified Mushroom Spore",
+	inventory_image = "mushroom_spore.png",
+	wield_image = "mushroom_spore.png",
+})
+
+minetest.register_craftitem("mushroom:identifier",{
+	description = "Mushroom Spore Identifier/Spore Extractor",
+	inventory_image = "mushroom_identifier.png",
+	wield_image = "mushroom_identifier.png",
+})
+
+minetest.register_craftitem("mushroom:brown_essence",{
+	description = "Healthy Brown Mushroom Essence",
+	inventory_image = "mushroom_essence.png",
+	wield_image = "mushroom_essence.png",
+	on_use = minetest.item_eat(10),
+})
+
+minetest.register_craftitem("mushroom:poison",{
+	description = "Red Mushroom Poison",
+	inventory_image = "mushroom_poison.png",
+	wield_image = "mushroom_poison.png",
+	on_use = minetest.item_eat(-10),
+})
+
+-- recipes
+
+minetest.register_craft( {
+		output = "mushroom:identifier",
+		recipe = { 
+			{ "", "default:torch", "" },
+			{ "default:steel_ingot", "default:mese_crystal_fragment", "default:steel_ingot" },
+		}
+})
+
+minetest.register_craft( {
+         type = "shapeless",
+         output = "mushroom:brown_essence",
+         recipe = { "mushroom:brown" , "vessels:glass_bottle" },
+})
+
+minetest.register_craft( {
+         type = "shapeless",
+         output = "mushroom:poison",
+         recipe = { "mushroom:red" , "vessels:glass_bottle" },
+})
+
+minetest.register_craft( {
+         type = "shapeless",
+         output = "mushroom:spore_brown",
+         recipe = { "mushroom:identifier" , "mushroom:spore1" },
+         replacements = {
+             { 'mushroom:identifier', 'mushroom:identifier' }
+         }
+})
+
+minetest.register_craft( {
+         type = "shapeless",
+         output = "mushroom:spore_red",
+         recipe = { "mushroom:identifier" , "mushroom:spore2" },
+         replacements = {
+             { 'mushroom:identifier', 'mushroom:identifier' }
+         }
+})
+
+minetest.register_craft( {
+         type = "shapeless",
+         output = "mushroom:spore_red 2",
+         recipe = { "mushroom:identifier" , "mushroom:red" },
+         replacements = {
+             { 'mushroom:identifier', 'mushroom:identifier' }
+         }
+})
+
+minetest.register_craft( {
+         type = "shapeless",
+         output = "mushroom:spore_brown 2",
+         recipe = { "mushroom:identifier" , "mushroom:brown" },
+         replacements = {
+             { 'mushroom:identifier', 'mushroom:identifier' }
+         }
+})